WO1996035394A1

WO1996035394A1 - Oral fluid discharge tool, body pipe for oral fluid discharge tool, branch pipe for oral fluid discharge tool, supply tool for branch pipe for oral fluid discharge tool

Info

Publication number: WO1996035394A1
Application number: PCT/JP1995/002227
Authority: WO
Inventors: Tadashi Satoh
Original assignee: Satoh, Hitoshi
Priority date: 1995-05-12
Filing date: 1995-10-31
Publication date: 1996-11-14
Also published as: AU3754895A

Abstract

Right and left lengthy branch pipes (2, 3) branch off a short body pipe (1). The body pipe (1) is formed at its tip end with a central suction port (13). The branch pipes (2, 3) are formed with tip end openings (2a, 3a) and small holes (21) opened in side walls of the branch pipes, which serve as side suction ports. The branch pipes (2, 3) are formed of an elastic material such as rubber, and can generally assume a substantially horseshoe-shape. The body pipe (1) and the branch pipes (2, 3) are curved to follow lower front teeth of a patient when inserted into an oral cavity of the patient. When a suction force acts on the body pipe (1), pollutant fluids in the oral cavity are sucked via the central suction port (13) and the side suction openings or holes (2a, 3a, 21).

Description

Description Oral drainage device, intraoral drainage device main body tube, intraoral drainage device branch tube, and intraoral drainage device branch tube supply tool

TECHNICAL FIELD The present invention relates to an intraoral drainage device for discharging saliva, tooth shavings, blood, etc. generated in a patient's mouth during dental oral treatment, and a body member for the intraoral drainage device. The present invention relates to a supply device for a branch pipe for an internal drainage device and a branch tube for an intraoral drainage device. Background art

In dental oral treatment, a drainage device (moisture-proof and drying tool) connected to the suction device is inserted into the oral cavity to discharge contaminants such as saliva, tooth shavings, and blood generated in the patient's oral cavity. Is done. The conventional intraoral drainage device has a single tubular shape as a whole, and the opening at the distal end functions as a suction port for the contaminated liquid. By moving the opening at the distal end as the suction port in the oral cavity, Contamination liquid suction is performed throughout. Further, a hook-shaped curved shape is formed so that the intraoral drainage device is convex upward, and the hook-shaped curved portion is positioned so as to straddle the lower front teeth.

However, in the conventional intraoral drainage device, in any case, suction can be performed only in a very narrow area near the distal end opening portion. Therefore, in order to aspirate the contaminated liquid in a large area in the oral cavity, it is necessary to move the intraoral drainage device, that is, the opening portion at the tip thereof, in the oral cavity during operations such as dental treatment. In addition, in the conventional intraoral drainage device, in order to maintain stability at a predetermined position in the oral cavity, it is not uncommon for an assistant or the like to hold the intraoral drainage device. When the intraoral drainage device is moved in the oral cavity as described above, or when the intraoral drainage device is held by an assistant or the like, a strong force acts on the patient not less than a little, and the patient receives a strong force. Easy to cause pain It becomes

Accordingly, a first object of the present invention is to provide an oral cavity capable of simultaneously discharging a contaminated liquid over a wide range of the oral cavity and stably holding the same at a predetermined position in the oral cavity. An internal drainage device is provided.

A second object of the present invention is to provide a main body tube among components for an intraoral drainage device for achieving the first object.

A third object of the present invention is to provide a branch pipe among components for an intraoral drainage device for achieving the first object.

A fourth object of the present invention is to provide a supply device for a branch tube which is a component for an intraoral drainage device to achieve the first object. Disclosure of the invention

In order to achieve the first object, the present invention has a first configuration as follows. That is,

A main body tube with a central suction port formed at the tip,

A pair of left and right branch pipes extending in opposite directions to the left and right from the main body pipe, forming a side suction port at a predetermined position, and capable of taking a substantially horseshoe shape as a whole;

Has,

The suction force applied to the main body tube is set so as to act on the central suction port and the side suction ports.

There is such a configuration. Preferred embodiments based on the above configuration are as described in claims 2 to 39 and claim 56 in the claims.

In order to achieve the first object, the present invention has a second configuration as follows. That is,

A set body of a main body pipe and a number of branch pipes that are detachably connected to the main body pipe and set to include those having different shapes from each other; The main body pipe has a collecting chamber formed therein, a discharge port formed at an upper position so as to communicate with the collecting chamber, a central suction port opened at a lower surface, and a plurality of formed at a side portion. A pair of left and right connecting portions to which a branch pipe arbitrarily selected from among the branch pipes is connected.

There is such a configuration. Preferred embodiments based on the above configuration are as described in claims 41, 42 and 56 in the claims. In order to achieve the first object, the present invention has a third configuration as follows. That is,

An intraoral drainage device located in the oral cavity and adapted to receive an external suction action,

A branch pipe adapted to take a substantially horseshoe shape as a whole,

A main pipe connected to the branch pipe for transmitting the suction force to a pipe in the branch pipe;

Each end of the branch pipe is opened as a suction port, and a plurality of suction ports are formed on the side wall of the branch pipe at intervals in the longitudinal direction of the branch pipe. Preferred embodiments based on the above configuration are as described in Claims 44 to 48 and Claim 56 in Claims.

In order to achieve the first object, the present invention has a fourth configuration as follows. That is,

A set of a main body pipe and a pair of left and right branch pipes each made of an elastic member having an opening at each end and a small hole formed in a side wall,

The main body pipe has one common pipe part having a central suction port at a distal end, and a pair of left and right branch pipe connection parts protruding in a cylindrical shape from the common pipe part,

Each of the branch pipes is configured to be connectable to the branch pipe connection part in a fitting manner. Preferred embodiments based on the above configuration are as described in claims 50 and 56 of the claims.

In order to achieve the second object, the main body tube for an intraoral drainage device according to the present invention has the following configuration. That is, An assembly room is formed inside,

At the upper part, an outlet opening to the collecting chamber is formed,

In the lower part, a central suction port is formed so as to open to the collecting chamber, and on a side part, a pair of left and right branch pipe connecting parts formed so as to open to the collecting chamber are formed.

There is such a configuration.

In order to achieve the third object, the intraoral drainage device branch tube of the present invention has the following configuration. That is,

It is configured as a tubular with both ends open,

It is configured so that it can easily bend when subjected to external force,

Multiple small holes are opened on the side,

There is such a configuration. A preferable mode based on the above configuration is as described in claim 53 of the Claims.

In order to achieve the fourth object, the supply device for a branch tube for an intraoral drainage device according to the present invention has the following configuration. That is,

A long rubber tube having small holes at predetermined intervals on the side surface is wound.

There is such a configuration. A preferable mode based on the above configuration is as described in claim 55 of the Claims.

According to the intraoral drainage device of the present invention, that is, the intraoral drainage device according to claims 1, 40, 43, and 4.9 in the claims, It is placed in the patient's mouth in a curved shape along the lower anterior teeth. Then, the contaminated liquid in the oral cavity is sucked from the plurality of suction ports located along the lower front teeth, and the contaminated liquid can be effectively discharged simultaneously over a wide area in the oral cavity. . In addition, the presence of the pair of left and right branch pipes allows the entire body including the main body pipe to be held at a stable position in the oral cavity. Furthermore, during dental work, etc., there is no need to hold or frequently move the intraoral drainage device by an assistant or the like, that is, a large external force is applied to the patient via the intraoral drainage device. Without giving children The pain of the patient is prevented or reduced. In addition, the workload of those who perform dental treatment can be reduced, and treatment efficiency can be improved (reduction of treatment time).

According to the main body tube for an intraoral drainage device of the present invention, it is possible to provide a main body tube for an intraoral drainage device capable of obtaining the above-mentioned effects.

According to the branch tube for an intraoral drainage device of the present invention, a branch tube for an intraoral drainage device for obtaining the above-mentioned effects can be provided.

ADVANTAGE OF THE INVENTION According to the branch pipe | tube supply tool for intraoral drainage tools in this invention, the required length of branch pipe | tube can be easily obtained according to a patient.

In the following, the advantages will be explained for each claim set out in the dependent form.

First, by adopting the configuration as described in claim 2, the branch pipe is arranged along the lower anterior teeth, and the central suction port is pulled out to the outside of the oral cavity while securing an appropriate position in the oral cavity. This is preferable in obtaining an appropriate posture relationship of the main body tube as a part.

With the configuration as described in claim 3, a curved shape for arranging the branch pipe along the lower front teeth can be easily obtained.

With the configuration as described in claim 4, the branch pipe can be formed by a rubber tube that is inexpensive and easily available. In addition, by adopting the configuration as described in claim 5, the branch pipe can be formed of a material widely used in the medical field.

The configuration as described in claim 6 is preferable in that the rigidity of the branch pipe is increased and a stable posture of the intraoral drainage device is maintained in the oral cavity. Further, by adopting the configuration as described in claim 7, a branch pipe for obtaining the effect corresponding to claim 6 can be obtained with a simple configuration.

The configuration as described in claim 8 is preferable for effectively sucking saliva secreted from the parotid gland by opening the tip of the branch vessel. In addition, by adopting a configuration as described in claim 9, claim 8 This is preferable for reliably obtaining the effect corresponding to the above.

The configuration as described in claim 10 is preferable in preventing the distal end of the branch vessel from stimulating the patient. In addition, by adopting the configuration as described in claim 11, a branch pipe having a spherical tip can be easily obtained. Further, by adopting the configuration as described in claim 12, it is preferable to surely obtain the suction action from the distal end opening of the branch pipe.

The configuration as described in claim 13 is preferable for effectively sucking saliva secreted from the submandibular line.

With the configuration as described in claim 14, both effects corresponding to claim 8 and claim 13 can be obtained.

By adopting the structure as described in claim 15 or 16, the suction state of the contaminated liquid in the oral cavity can be easily visually observed from the outside. With the configuration as described in claim 17, it is preferable to hold the branch pipe, that is, the drainage device in the oral cavity more stably in the oral cavity. The configuration as described in claim 18 is preferable in facilitating the production of the intraoral drainage device.

The configuration described in claim 19 or claim 20 is preferable in that connection between the branch pipe and the main pipe is easily performed.

By adopting the configuration as set forth in claim 21, the pollutant sucked from each suction port using the drainage pipe having the hook-shaped portion without disturbing a person performing dental treatment or the like. This is preferable for discharging the liquid to the outside of the oral cavity. By adopting the configuration as set forth in claim 22, it is easy to manufacture each of the main body pipe and the discharge pipe, and it is easy to change the shape of one of the main body pipe and the discharge pipe. It is preferable to cope with. Further, by adopting the configuration as described in claim 23, it is preferable for mass production.

With the configuration as described in claim 24, the posture of the drainage tube and, consequently, the oral drainage device is maintained in a stable posture while preventing or reducing pain to the patient. Above.

The configuration as described in claim 25 or claim 26 is preferable in mass production.

The configuration as described in claim 27 or claim 28 is preferable in that a part of the branch pipe also has the function of the main body pipe, and a simpler configuration as a whole is obtained.

With the configuration as described in claim 29, the contaminated liquid sucked from each suction port in the main body pipe can be once collected. In addition, by adopting a configuration as described in claim 30, the balance of the suction force between the central suction port and the side suction port is utilized by utilizing the passage resistance setting of the narrow passage connecting the central suction port. This is preferable for obtaining as desired.

By adopting the configuration as described in claim 31, it is preferable to reliably obtain the action of sucking the contaminated liquid from the central suction port.

The configuration as described in claim 32 or claim 33 is preferable in simplifying the configuration of the junction of the main pipe and the branch pipe.

With the configuration as described in claim 34, another specific configuration example for joining the main body pipe and the branch pipe can be provided.

The configuration as described in claim 35 is preferable in preventing the central suction port from being blocked.

With the configuration as described in claim 36, the configuration of the common branch pipe can be divided into a communicating part with the main pipe and other parts, and can be formed for each functional part.

With the configuration as described in claim 37, only the communicating portion between the main pipe and the common branch pipe having a relatively complicated structure is integrally formed, which is preferable in mass production.

The configuration described in claim 38 is preferable in reducing the number of parts.

By adopting the structure as described in claim 39, the common branch pipe, especially the main body The long and protruding part protruding from the tube is preferable for forming a shape that matches the shape of the oral cavity.

With the configuration as described in claim 41 or claim 42, when selecting a branch pipe conforming to the oral cavity shape, a preferable set of branch pipe shapes is provided.

The configuration as described in claims 43 to 48 is expressed by the configuration centered on the branch pipe in claim 1 and claims 2 to 39 related thereto. However, its advantages will be clear from the above description. By adopting the structure as described in claim 56, it is preferable in that the intraoral drainage device is more stably held in the oral cavity. Other objects and advantages of the present invention will become apparent from the following description of the embodiments. Of course, the present invention is not limited to the embodiments, and includes the case where the embodiments are modified within the scope described in the claims. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view showing an example of an intraoral drainage device according to the present invention.

FIG. 2 is a side cross-sectional view of the intraoral drainage device shown in FIG. 1 along the axial direction of the branch pipe. FIG. 3 is a top view of a main body tube in the intraoral drainage device shown in FIG.

FIG. 4 is a bottom view of the main body tube in the intraoral drainage device shown in FIG.

FIG. 5 is a partial cross-sectional side view showing a state of use of the intraoral drainage device shown in FIG. FIG. 6 shows a state of use of the intraoral drainage device shown in FIG. 1, and is a view taken in the direction of the arrow Y in FIG.

FIG. 7 is a perspective view showing an example of a branch pipe supply tool.

FIG. 8 is a side sectional view of a main part showing a modified example near the central suction port.

FIG. 9 is a side sectional view showing another example of the branch pipe.

FIG. 10 is a sectional view taken along the line XI0—XI0 in FIG.

FIG. 11 is a diagram showing an example of a set of branch pipes having different shapes.

FIG. 12 is a diagram showing an example of a set of branch pipes having different shapes.

FIG. 13 is a perspective view showing another example of the intraoral drainage device according to the present invention. FIG. 14 is a side cross-sectional view along the axial direction of the branch pipe in the intraoral drainage device shown in FIG.

FIG. 15 is a cross-sectional view corresponding to line X15-X15 in FIG.

FIG. 16 shows yet another embodiment of the intraoral drainage device according to the present invention, and is a cross-sectional view corresponding to FIG.

FIG. 17 is a cross-sectional view corresponding to line X17—XI7 in FIG.

FIG. 18 is a cross-sectional view corresponding to line X18—XI8 in FIG.

FIG. 19 is a perspective view showing a modified example of the discharge pipe.

FIG. 20 is a perspective view showing a modified example of the discharge pipe.

FIG. 21 is a perspective view showing a modified example of the discharge pipe.

FIG. 22 is a perspective view showing a modified example of the discharge pipe.

FIG. 23 is a sectional view showing a modification of the main body tube.

FIG. 24 is a view of the main body pipe shown in FIG. 24 as viewed from below.

FIG. 25 shows a modification of the main tube, and is a cross-sectional view corresponding to FIG. FIG. 26 is a perspective view of a main part showing a modification of the branch pipe.

FIG. 27 is a cross-sectional view corresponding to line X 27—X 27 in FIG.

FIG. 28 shows a modification of the branch pipe, and is a cross-sectional view corresponding to FIG. FIG. 29 shows a modification of the branch pipe, and is a sectional view corresponding to FIG. FIG. 30 shows a modification of the branch pipe, and is a sectional view corresponding to FIG. FIG. 31 shows a modification of the branch pipe, and is a perspective view corresponding to FIG. FIG. 32 is a sectional view of a main part showing a modification of the branch pipe.

FIG. 33 is a sectional view of a main part showing a modification of the branch pipe.

FIG. 34 is a view of the cap member shown in FIG. 33 as viewed from the tip side. FIG. 35 is an overall perspective view showing still another embodiment of the intraoral drainage device according to the present invention.

FIG. 36 is an essential part perspective view showing a modification of the branch pipe.

FIG. 37 is a sectional view showing the arrangement of the branch tube shown in FIG. 36 in the oral cavity.

FIG. 38 is an overall perspective view showing still another embodiment of the intraoral drainage device according to the present invention. FIG. 39 is a sectional view of a main part of the embodiment in FIG. 38, and is a sectional view corresponding to FIG.

0 BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

Explanation of Figures 1 to 6

1 and 2, the intraoral drainage device of the present invention includes a bottomed tubular main body tube 1 and a pair of left and right branch tubes 2 and 3. A collection chamber 11 having a circular cross section is formed in the main pipe 1. The discharge chamber 12 and the central suction port 13 are connected to the collection chamber 11 by a pair of left and right branch pipes 1 4 and 1 5 is open.

The discharge port 12 is opened on the upper surface of the main body pipe 1, and a discharge pipe 4 connected to a suction device (not shown) is detachably fitted and connected. The discharge pipe 4 is restricted from being inserted into the discharge pipe 12 with a predetermined depth or more by abutting on a step 12 a formed on the inner surface of the discharge port 12.

The central suction port 13 is opened on the lower surface of the main body tube 1, but is provided through a cylindrical portion 13 a (a long and narrow passage) extending vertically in the collecting chamber 11 over a predetermined length. It is communicated with the collective room 11. The cylindrical portion 13a is formed so as to be located on the same axis as the collecting chamber 11, and its upper end extends to near the discharge pipe 4 connected to the discharge 12.

A plurality of grooves 16 are formed on the bottom surface, i.e., the lower surface of the main body tube 1, extending radially around the central suction tube 13. Each of the grooves 16 communicates the central suction port 13 with the outer surface of the main body tube 1 and constitutes a margin space setting means in the claims.

The pair of left and right branch pipe connections □ 14 and 15 are formed symmetrically with respect to the central suction □ 13, and in the embodiment, the cylindrical projection 1 formed on the lower side surface of the main pipe 1 4a, 15a (passage in). The branch pipe connecting portions 14 and 15 are formed so as to face the lower side surface of the tubular portion 13a.

Branch pipes 2 and 3 are connected to branch pipe connection ports 14 and 15, respectively. The branch pipes 2 and 3 are formed so as to be easily bent by receiving a slight external force, and can be formed by an elastic member such as a rubber tube (preferably a silicon rubber tube). The branch pipes 2 and 3 do not receive external force. In this case, as shown in Fig. 1 and Fig. 2, it is elastically returned to a substantially linear state. That is, the branch pipes 2 and 3 can be configured by using a commercially available straight rubber tube cut to a predetermined length.

The branch pipes 2 and 3 are detachably integrated with the main pipe 1 by tightly fitting to the outer circumference of the cylindrical projections 14a or 15a, but cannot be removed using an adhesive. Can also be connected.

The tip openings 2a, 3a of the branch pipes 2, 3 are open to the outside as they are, and are set to function as side suction ports. A plurality of small holes 21 communicating between the inside and the outside of the branch pipes 2 and 3 are opened on the side surfaces of the branch pipes 2 and 3, and the small holes 2 1 also constitute side suction ports. It is as follows. A total of four small holes 21 are formed for each of the branch pipes 2 and 3, with a pair of upper and lower holes at predetermined intervals in the longitudinal direction. That is, when focusing on one branch pipe 2 (branch pipe 3), two small holes 21 are formed so as to open on the upper surface of the branch pipe 2, and correspond to the small holes 21 opened on this upper surface. At the position, a small hole 21 is also formed on the lower surface of the branch pipe 2.

Here, as shown in FIGS. 1 and 2, the intraoral drainage device is formed symmetrically in the embodiment. When viewed from the upper surface (lower surface), the outer peripheral shape of the main pipe 1 is substantially a whole as shown in FIG. 3 and FIG. It is configured as a circular shape. Further, the main body tube 1 is formed of a hard synthetic resin as a whole so as to have sufficient rigidity. The main pipe 1 and the branch pipes 2 and 3 are formed to be transparent or translucent so that the internal state is visible, that is, so that they can be seen through.

The size of the main body tube 1 is such that the height and the diameter in the vertical direction (length in the major axis direction) are about 1 cm as a whole. Branch pipes 2 and 3 have an inner diameter of about 2 mm (outer diameter of about 3 mm). Before use, the length of the branch pipes 2 and 3 is set to a sufficiently long length (for example, 6 to 10 cm) corresponding to the required maximum length, and is set to a predetermined length when used. Cut into pieces. The diameter of the small hole 21 is about 1 mm. Furthermore, the effective opening area between the central suction port 13 and the branch pipe connection ports 14 and 15 is set so as to satisfy the relation that the suction force from the discharge port 4 acts almost equally. The suction force from the central suction port 13 can be set as appropriate, for example, so as to be larger than the suction force from the branch pipe connection ports 14 and 15. Further, in the embodiment, the suction forces from the left and right branch pipe connection ports 14 and 5 are set to be substantially equal to each other, but they may be set to be different from each other.

The operation of the intraoral drainage device in the above-described configuration, that is, the method of use will be described with reference to FIGS. 5 and 6. The case where it is installed at an intermediate position is shown.

First, the elongated branch pipes 2 and 3 are cut into lengths according to the size in the oral cavity of the patient (length in the direction along the dentition). That is, the length of the branch pipes 2 and 3 is set so that the distal openings 2a and 3a are located near the parotid gland of the patient A. Next, among the intraoral drainage devices assembled as shown in Fig. 1, the main tube 1 is placed near the lower front teeth in the oral cavity. At this time, the substantially straight branch pipes 2 and 3 are inserted into the oral cavity while being curved by utilizing their elastic deformation. In the state of being introduced into the oral cavity, the branch pipes 2 and 3 are curved so as to almost follow the lower dentition by the action of trying to return to a substantially linear shape, that is, including the main pipe 1. The entire horseshoe shape is maintained as a whole, and this state is the state shown in FIG. As is clear from FIGS. 5 and 6, the branch pipes 2 and 3 have a substantially horseshoe shape in a plane substantially perpendicular to the axis of the main pipe 1.

From the state shown in FIGS. 5 and 6, dental treatment is performed while the suction device connected to the discharge pipe 4 is operated. At this time, contaminated liquid such as saliva, tooth shavings, blood, etc. is discharged from each suction port, that is, the central suction hole 13, the tip openings 2 a, 3 a, and the small holes 21 of the branch pipes 2, 3. After being sucked and passing through the collecting chamber 11, they are discharged to the discharge pipe 4. Since the suction ports 13, 2a, 3a, 21 are widely dispersed in the oral cavity, the contaminated liquid is effectively sucked from a wide area in the oral cavity.

The central suction port 13 mainly sucks contaminated liquid that tends to collect near the lower front teeth That is (the saliva secreted from the sublingual gland is mainly aspirated). The distal ends 02a and 3a of the branch vessels 2 and 3 mainly suck saliva secreted from the parotid gland. The stoma 21 sucks the contaminant at the position along the lower dentition between the central suction port 13 and the tip openings 2a, 3a (saliva secreted from the submandibular gland) Mainly suction).

The central suction port 13 is prevented from being completely blocked by the skin, mucous membrane and tongue in the oral cavity due to the presence of the groove 16. Further, since the branch pipes 2 and 3 are formed with a plurality of suction ports 2a and 3a and small holes 21, it is possible to prevent a situation in which all the suction ports are closed. In order to effectively suck the polluted liquid, it is necessary to suck the air together with the air. However, the suction of the air is surely ensured by preventing the suction port from being blocked (particularly, the branch pipe). Small holes 21 on the upper surface of 2 and 3 ensure air suction).

During the above-mentioned suction of the contaminated liquid, the pair of left and right branch pipes 2 and 3 receive the pressing action of the inner wall surface of the mouth and the tongue to a certain extent, and are securely held at the initial installation positions shown in FIGS. 5 and 6. As a result, the main pipe 1 is also securely held at the initial installation position.

Here, the discharge pipe 4 is formed so as to extend upward from the upper surface of the main body pipe 1 and then have a hook-shaped portion 4a curved downward. You will straddle the front teeth. The hook-shaped portion 4a hooks the lower lip or the like, so that the main body tube 1 and, therefore, the intraoral drainage device are stably held at the initial installation position. The discharge pipe 4 can be formed of a metal such as stainless steel or copper or a synthetic resin. However, the discharge pipe 4 is as soft and light as possible in terms of reducing contact with the patient (preventing stimulation of the patient A). It is preferred to be formed of a material (it can also be formed of waterproofed paper).

Depending on the treatment position, the position of the main tube 1 is changed to the right or left as compared with the case of FIG. 6, but in this case, the branch tubes 2 and 3 have the same length. May be set so that the tip openings 2 & and 3a of the branch pipes 2 and 3 are located at a deep position in the oral cavity (near the parotid gland). Description of Figure Ί

FIG. 7 shows a branch pipe supply tool C for performing a preferred method of forming the branch pipes 2 and 3. The branch pipe supply tool C includes a reel 31 configured to have a circular outer periphery and a holder 32 that rotatably holds the reel 31. The holder 32 has a pair of holding portions 32a and a base portion 32b connecting lower ends of the holding portions 32a. The base 32b can also be fixed to the workplace of a dental clinic. The reel 31 is rotatably inserted into a receiving groove 32 c formed in the holding portion 32 a, so that the reel 31 is rotatably inserted into the holder 32. It is held rotatably.

A long rubber tube 33, for example, a silicone rubber tube is wound around the reel 31. The initial length of the wound rubber tube 3 3 is several rr! It is assumed to be extremely long, up to 10 m. On the side surface of the rubber tube 33, two small holes 21 as side suction ports are formed at predetermined intervals, for example, every lcm at diametrically symmetric positions.

By cutting the rubber tube 33 with the small hole 21 wound around the reel 3 1 and having an appropriate length (several cm), the branch tube connection tubes 14 and 15 of the main tube 1 can be cut. Branch pipes 2 and 3 to be connected are obtained. As described above, the cutting length may be set to an optimum value in consideration of the size of the patient's mouth and the location of the main body tube 1 in the mouth (as described above, the tip opening 2a, 3a should be located near the parotid gland). This is preferable in preventing or reducing the generation of waste wastefully discarded by cutting for setting the length of the branch pipes 2 and 3.

Figure 8 description

FIG. 8 shows a modification of the central suction port 13. In this embodiment, a cylindrical projection 13 b is formed around the outer periphery of the central suction port 13, and a cover member having a plurality of small holes 35 on the outer periphery of the cylindrical projection 13 b 36 is fitted and fixed (fixing using an adhesive is also possible). The cover member 36 constitutes an extra space setting means, and performs the same function as the groove 16 shown in FIGS. 2 and 4 (blocking of the central suction □ 13 is prevented). Stop).

Explanation of Fig. 9 and Fig. 10

9 and 10 show modifications of the branch pipes 2 and 3. FIG. In this embodiment, the branch pipes 2B and 3B are embedded in a tubular main body 41 formed of a rubber tube or a soft synthetic resin or the like so as to be easily bent, and in the pipe wall of the main body 41. It consists of metal wires 42. The wire 42 extends over substantially the entire length of the main body 41. Although the wire 42 can be easily bent by receiving an external force, the curved shape when receiving the external force is maintained by the plastic deformation even after the external force is removed. The main body 41 is set to follow the shape of the wire 42 (the wire 42 cannot be deformed by the elastic return force of the main body 41).

The branch pipes 2B and 3B in this embodiment are used by being connected to the main pipe 1 in the same manner as in FIGS. 1 to 6 described above. However, the branch pipes 2B and 3B are curved in advance according to the shape of the oral cavity of the patient before being introduced into the oral cavity. In this case, it is preferable that, after being inserted into the oral cavity, the branch pipes 2B and 3B be pressed against the inner surface of the oral cavity to have a shape almost completely conforming to the inner surface shape of the oral cavity. Of course, in the branch pipes 2B and 3B in the present embodiment, the small holes 21 can be opened on the side surfaces.

Explanation of Fig. 11 and Fig. 12

FIG. 11 and FIG. 12 show still another embodiment of the present invention. In this embodiment, a large number of branch pipes corresponding to the branch pipes 2 and 3 (2B, 3B) are prepared in advance in accordance with the difference in the shape of the oral cavity of the patient (set of the branch pipes), and the patient is provided with the branch pipes. The most suitable branch pipe is selected from a large number of prepared branch pipes and used by connecting to the main pipe 1. However, the branch pipes prepared in large numbers are made of a hard synthetic resin or the like so as not to be easily deformed.

Many branch pipes are prepared as follows. First, Fig. 11 shows a group in which the curved shape to the main pipe 1, particularly the curved shape near the connection to the main pipe 1, is set to be substantially the same, and the branch pipe 2C-1 is the most. Because it is long, it is a basic branch pipe. And the branch pipe 2 C— 2 is the basic branch pipe 2 C—

6 It is slightly shorter than 1 and corresponds to the shape (length) of the portion corresponding to L1 in the basic branch pipe 2C-1. Further, the branch pipe 2C-3 is slightly shorter than the branch pipe 2C-2, and corresponds to the shape (length) of the portion corresponding to L2 in the basic branch pipe 2C-1.

Branches 2D— in the group shown in FIG. 2D-3, the degree of curvature (curved shape) of the branch pipe 2D-1 as the basic branch pipe is different from that of the basic branch pipe 2C-1 in the group shown in Fig. 11. Only the settings are made, and the other setting methods are the same as those in Fig. 11. That is, the branch pipe 2D-2 corresponds to the L11 portion of the basic branch pipe 2D-1, and the branch pipe 2D-3 corresponds to the L12 portion of the basic branch pipe 2D-1.

The branch pipes other than the basic branch pipe correspond to the dependent branch pipes in the claims. In addition, the examples shown in FIGS. 11 and 12 are merely examples, and in fact, more types of branch pipes can be prepared. Furthermore, considering the case where the branch pipes are used symmetrically, at least one pair (two pairs) of branch pipes as shown in Figs. 11 and 12 is required. The branch pipe as described above is connected to the main pipe 1 once, and then is set in the patient's oral cavity, and when it does not fit, the branch pipe is connected to the main pipe 1 ( It can be attached to and detached from the ports 14 and 15) (preferably a connection using a fitting type using the cylindrical projections 14 a and 15 a).

Explanation of Fig. 13 to Fig. 15

FIGS. 13 to 15 show another embodiment of the present invention. The same components as those in the embodiment shown in FIGS. 1 to 6 are denoted by the same reference numerals, and the description thereof is omitted. The same applies to the following still another embodiment). The present embodiment shows a modified example of the main body tube 1, and is configured by a T-shaped tube in which the main body tube 1 has a substantially T-shape as a whole. The T-shaped main pipe 1 has one common pipe la and a pair of left and right cylindrical branch pipe connection parts lb formed short so as to be orthogonal to the tip of the common pipe 1a. 1c (corresponding to the cylindrical projections 14a, 15a in FIG. 2), and the pair of branch pipe connection portions 1b, lc are orthogonal to the common pipe portion 1a, and as a whole It is configured to be T-shaped. And common At the distal end of the tube portion 1a, a merging portion 1d where the respective tube portions 1a to lc merge is formed. A central suction port 13 is formed in a front end face of the main pipe 1 which is located on an extension of the common pipe section 1a. The main body tube 1 can be formed of an appropriate material such as a metal or a synthetic resin, but is preferably formed of a soft synthetic resin in terms of softening a patient. The inside diameters of the branch pipe connection parts lb and 1c are equal to each other and smaller than the inside diameter of the common pipe part la. The branch pipe 2 is connected to the branch pipe connection part 1b, and the branch pipe 3 is connected to the branch pipe connection part 1c.

A discharge pipe 4 connected to a suction device (not shown) is detachably fitted and connected to a base end, that is, an upper end of the common pipe 1a. Note that the method of using the intraoral drainage device in this embodiment is the same as that in the above-described embodiment, and a duplicate description thereof will be omitted.

Explanation of Fig. 16 to Fig. 18

FIGS. 16 to 18 show modified examples of the main pipe 1, the branch pipes 2 and 3, and the drain pipe 4. In the present embodiment, the main body pipe 1 is formed as a single pipe having no branch portion, and is formed as a whole as a long integrated product including the drain pipe 4 (the drain pipe 4 is shown in the figure). Is omitted, but the shape is the same as that shown in Fig. 1 or Fig. 13). The main pipe 1 integrated with the drain pipe 4 is made of a soft or hard synthetic resin (in the embodiment, vinyl chloride). The distal end of the main body tube 21 is opened as a central suction port 13 having a large diameter as it is.

The pair of left and right branch pipes 2 and 3 is also composed of one pipe as a whole. That common branch pipes 2 2 indicated by reference numeral 2 2 is an overall elongated, and ^the! Tip section, that the lower end of the body tube 1 through the liquid-tight. Portions of the common branch pipe 22 protruding outside the main pipe 1 constitute branch pipes 2 and 3. In the common branch pipe 22, a communication wall 23 that connects the inside of the common branch pipe 22 and the inside of the main pipe 1 is formed on the pipe wall of the central pipe part 22 a located in the main pipe 1. ing. The communication port 23 is formed in the upper wall of the central pipe 22 a and is opened toward the base end (upper end) of the main pipe 1. The common branch pipe 22 has the same diameter over its entire length, but has an outer shape smaller than the inner diameter of the main pipe 1. As a result, in the main pipe 1, around the common branch pipe section 2 2 (central pipe section 2 2 a), the central suction port 13 as the distal end opening is provided at the base end side of the main pipe 1, that is, A gap S communicating with the base end side of the pipe portion 22a is formed. The common branch pipe 22 penetrates substantially the center of the main pipe section 21 in the strange direction, and a total of two gaps S are formed on both sides of the central pipe section 22a.

The relationship between the phantom (effective opening area) of the communication block 23 and the area of the gap S (total area) is such that the suction force for the central suction □ 13 and the suction force for the common branch pipe 22 are almost equal. Is set. The maximum effective opening area of the main pipe 1 is larger than the effective opening area of the communication port 23 and the total area of the two gaps S.

Like the branch pipes 2 and 3 in the above embodiment, the common branch pipe 22 is formed so as to be easily curved (in the embodiment, vinyl chloride) and has a side suction port (not shown). I have. The operation itself in this embodiment is the same as that of the above-described embodiment, and a duplicate description thereof will be omitted. Of course, the contaminated liquid from the central suction □ 13 is sucked to the suction device side through the gap S, and the contaminated liquid sucked in the common branch pipe 22 passes through the communication □ 23 to the main pipe 1 Is sucked to the suction device side via. That is, in the main body pipe 1, the portion immediately upstream of the central pipe portion 22a functions as the junction 1d in the embodiment of FIG.

Here, as a modified example of FIG. 16 to FIG. 18, the following is also possible. That is, the long common branch pipe 22 is connected to the central pipe section 2 2a (Fig. 16—the length range between the dotted lines) penetrating the main pipe 1 and each end of the central pipe section 2 2a. The branch pipes (corresponding to the branch pipes 2 and 3 in the above-described embodiment) may be configured to have a three-part configuration. In this case, the central pipe portion 22a is slightly protruded from the side surface of the main pipe 1, and the branch pipe is connected to the externally protruded portion. Further, the main pipe 1 and the central pipe section 22a may be integrally formed of a synthetic resin.In this case, the main pipe 1 is not integrated with the discharge pipe 4, but is formed of a short length. (The length up to the two-dot chain line in Fig. 16 Is the main pipe 1).

Explanation of Fig. 19 to Fig. 22

FIGS. 19 to 22 show preferred examples of the discharge pipe 4. That is, in the example shown in FIG. 19, the portion corresponding to the hook-shaped portion 4a or its vicinity is a bellows portion 45, and its curved shape can be changed according to the patient A. In the example of FIG. 20, the bellows parts 46 and 47 are provided at a total of two places at small intervals in or near the hook-shaped part 4a. In both cases of FIGS. 19 and 20, the sectional shape of the discharge pipe 4 is circular (substantially circular).

By providing such bellows part 45 (46, 47), the part located outside the oral cavity is bent to the left or right side largely with respect to the tip part located in the oral cavity. , So that the drain 4 does not interfere with the treatment

(If emphasis is placed on this lateral bending, it is preferable that the bellows can be bent to the side near the distal end of the discharge tube 4, that is, immediately after exiting the oral cavity).

In the examples of FIGS. 21 and 22, the cross-sectional shape of the discharge pipe 4 is set so that at least the tip side (the side inserted into the oral cavity) of the hook-shaped portion 4 a is thinner in the front-rear direction ( It has a flat shape (in the example, a substantially rectangular cross section). In other words, this setting is preferable when the thickness in the left-right direction in FIG. 4 is reduced as much as possible while ensuring the desired effective opening area, and is arranged in the oral cavity. FIG. 21 shows the case where one bellows part 45 is provided, and FIG. 22 shows the case where two bellows parts 46 and 47 are provided.

Explanation of Figures 23 to 24

FIG. 23 and FIG. 24 show modifications of the main body tube 1. In the present embodiment, a concave portion 51 extending in a direction substantially perpendicular to the branch pipes 2 and 3 is formed on the distal end surface of the main pipe 1 while using a T-shaped pipe as shown in FIGS. 13 to 15. Then, a central suction port 13 is opened in the bottom surface of the recess 51. Such a recess 51 constitutes a margin space setting means in the claims.

Further, in the present embodiment, an annular protrusion 52 is formed on the outer periphery of the distal end of the branch pipe connection part lb, lc, and the branch pipes 2, 3 are fitted on the outer circumference of the branch pipe connection part lb, lc. It is ensured that the branch pipes 2 and 3 can be securely retained only by combining them. Similarly, in the main pipe 1, an annular projection 53 is formed on the outer periphery of the upper end of the common pipe 1a. Thus, the discharge pipe 4 can be reliably prevented from coming off simply by fitting the discharge pipe 4 to the outer periphery of the common pipe section 1a. Description of Figure 25

FIG. 25 shows a modification of the extra space setting means for preventing the central suction port 13 from being blocked by the inner wall surface of the oral cavity or the tongue. That is, the distal end of the main body tube 1 is formed to be a substantially arc-shaped surface 54 in a plane orthogonal to the branch tubes 2 and 3. A plurality (two in this embodiment) of central suction ports 13 are formed in the substantially arc-shaped surface 54 at positions apart from each other in a direction substantially orthogonal to the branch pipes 2 and 3.

Explanation of Fig. 26 to Fig. 30

FIGS. 26 to 30 show modified examples of the branch pipes 2 and 3.In each case, the branch pipes are formed to have a flat shape in which the width in the left and right directions is smaller than the height in the vertical direction. . That is, in the case of FIG. 26 to FIG. 28, the cross-sectional shape of the branch pipes 2 and 3 is a substantially elliptical shape whose length is measured in the vertical direction. In the case of FIG. 29, the cross-sectional shape of the branch pipes 2 and 3 is a substantially rectangular shape that is long in the vertical direction. In the case of Fig. 30, the cross-sectional shape of the branch pipes 2 and 3 is a triangular shape that is long in the vertical direction (a substantially isosceles triangular shape having a bottom surface at the bottom and one vertex at the top). . Note that the corners are rounded in both FIG. 29 and FIG. 30.

The tip openings 2a and 3a of the branch pipes 2 and 3 are the vertical center positions of the branch pipes 2 and 3. Lower position. In the case of FIG. 26, FIG. 27, FIG. 29, and FIG. 30, the small hole 21 serving as the side suction port is formed so as to open only on the left and right side surfaces of the branch pipes 2 and 3. ing. In the case of FIG. 28, the small holes 21 are formed so as to open only on the lower surfaces of the branch pipes 2 and 3. Of course, the opening position of the small hole 21 can be appropriately set in any of the cases shown in FIGS. 26 to 30. For example, it is possible to make the opening only on the upper surface, or to open both the upper surface and the lower surface.

Explanation of Fig. 31 and Fig. 32

FIG. 31 shows a modified example of the spare space setting means for preventing the distal end openings 2a, 3a of the branch pipes 2, 3 from being closed by the inner wall of the oral cavity or the like. That is, the branch pipes 2 and 3 have a flat shape that is long in the vertical direction as shown in FIGS. 26 to 28, and a plurality of (two in the embodiment) grooves are provided on the tip surface. 5 5 is formed. The groove 55 communicates the distal end openings 2 a and 3 a with the outer peripheral surfaces of the side walls of the branch pipes 2 and 3.

Figure 32 description

Fig. 32 shows that the contaminated liquid can be reliably sucked from the vicinity of the distal end surfaces of the branch pipes 2 and 3. That is, a plurality of (two in this embodiment) communication passages 56 are formed in the vicinity of the distal end surfaces of the branch pipes 2 and 3 for communicating the inside of the pipes of the branch pipes 2 and 3 with the side surfaces of the branch pipes 2 and 3. ing. As a result, even if the tip openings 2a and 3a are closed, the contaminated liquid is sucked from the communication passage 56. As described above, in this embodiment, the communication path 56 has substantially the same function as the distal end openings 2a and 3a. In addition, a plurality of distal end openings 2a and 3a may be formed at positions apart from each other on the distal end surfaces of the branch pipes 2 and 3 (in this case, the pipelines in the branch pipes 2 and 3 are It is branched into a plurality of pipes near the distal ends of the branch pipes 2 and 3, and the branched distal pipes are opened at the distal end surfaces of the branch pipes 2 and 3, respectively).

Explanation of Figures 33 and 34

FIGS. 33 and 34 show still another example of the spare space setting means for preventing the end openings 2 & and 3 a of the branch pipes 2 and 3 from being closed. In the present embodiment, a cap member 61 is separately connected to the distal ends of the branch pipes 2 and 3. is there. The cap member 61 has a cylindrical portion 62 and a spherical portion 63, and the distal ends of the branch pipes 2 and 3 are fitted and connected to the outer periphery of the cylindrical portion 62. A plurality of (four in this embodiment) grooves 64 are formed on the tip end side of the spherical portion 63 and extend radially. The grooves 64 communicate with each other near the center of the spherical portion 63. A communication path 65 is formed between the cylindrical portion 62 and the spherical portion 63 to communicate with the pipes in the branch pipes 2 and 3. The communication passage 65 is opened at the bottom portion of the groove 64, and the portion of the communication passage 65 opened at the bottom of the groove 64 substantially forms the distal end opening 2 &, 3a of the branch pipes 2, 3. Configuration.

Here, the cap member 61 is preferably formed of a synthetic resin, particularly a soft rigid resin, in order to reduce the contact with the inner wall of the oral cavity. However, in order to soften the contact with the inner wall of the oral cavity, it is also possible to adopt a configuration in which the groove 64 is not formed (the communication passage 65 is formed on the distal end face of the cap member 61 which is kept in a smooth spherical shape). Opening configuration).

Description of Figure 35

In FIG. 35, the main pipe 1, branch pipes 2 and 3, and discharge pipe 4 are each flattened so as to maintain stability in the oral cavity and ease contact with the patient. That is, the branch pipes 2 and 3 have a flat shape that is long in the vertical direction, as described above. The main pipe 1 has a flat shape (a flat shape that is long in the left-right direction) in which the width in the front-rear direction is smaller than the length in the left-right direction, that is, the length in the extending direction of the branch pipes 2 and 3. Further, the waste liquid pipe 4 has a flat shape whose thickness is smaller than the width in the left-right direction. Such an oral waste liquid device shown in FIG. 35 can be formed as a whole with a synthetic resin such as a soft synthetic resin such as vinyl chloride. Further, the main pipe 1 and the branch pipes 2 and 3 can be integrally formed, and the discharge pipe 4 can be formed separately. Further, the main pipe 1 and the discharge pipe 4 can be integrally formed, and the branch pipes 2 and 3 can be formed separately.

Explanation of Figures 36 and 37

FIGS. 36 and 37 show examples in which a thin plate-like holding piece 71 is integrally provided below the branch pipes 2 and 3. The holding piece 71 extends toward the inside of the oral cavity (that is, toward the other branch pipe), and has a predetermined length in the longitudinal direction of the branch pipes 2 and 3. However, only one branch pipe is shown in the figure, and the other branch pipe is not shown. By providing such a holding piece 71, when the branch pipes 2 and 3 are located at predetermined positions in the oral cavity, as shown in FIG. 37, the holding piece 71 is moved by the tongue 72 of the patient. By being pressed and held, the intraoral drainage device is more stably held in the oral cavity.

Explanation of Fig. 38 and Fig. 39

FIG. 38 and FIG. 39 show examples in which the main pipe 1 is configured by using the branch pipe 1. That is, a predetermined position on the base end side of each of the branch pipes 2 and 3 is bent at a substantially right angle (the bent portion is indicated by reference numeral 丫), and the base end side is separated from the bent portion 丫 by the main body. Used as tube 1e. The discharge pipe 4 is fitted around the outer circumference of each main body pipe 1 e in a state where the main body pipes 1 e are bundled together. That is, the main body pipes 1 _e are integrated with each other using the force discharge pipe 4. In the vicinity of the bent portion a, a central suction port 13 is formed. In FIG. 39, the portion surrounded by the dashed line substantially constitutes the main body pipe 1. (The pipe in the discharge pipe 4 is connected to each suction port 13, 2, 2a, 3a, 21) This constitutes a collection chamber in which the sucked contaminants are collected). In the present embodiment, the structure is extremely simplified as a whole.

Capture description

Although the embodiment has been described above, the present invention is not limited to this, and includes, for example, the following cases.

) The central suction □ 13 does not have to be opened on the lower surface as long as it is below the main tube 1.

(2) The connection position of the branch pipes 2 and 3 to the main pipe 1 (the position of the branch pipe connection ports 14 and 15) can be set as the lower surface of the main pipe 1. In this case, it is preferable that the central suction port 13 is opened at the lower surface of the main body tube 1 so that the central suction port 13 is not positioned so much above the bottom surface of the oral cavity.

(3) The cylindrical projection 13b in FIG. 8 may be made longer so that the tip opening of the cylindrical projection 13b functions as the central suction port 13. In this case, from the main pipe 1, the two branch pipes 2, 3 and the cylindrical projection The part 13b is branched so that there are a total of three branch pipes.

(4) The intraoral drainage device of the present invention is not limited to dental treatment. Any substance that produces a pollutant in the oral cavity can be used for appropriate treatment (surgery).

(5) The intraoral drainage device of the present invention can be applied to animals other than humans, such as cows and horses.

(6) Tip openings 2a and 3a of branch pipes 2 and 3 etc. may be closed (in this case, small holes 21 opened on the side are required).

(7) Mixing the antibacterial agent in the material (for example, synthetic resin) that constitutes the main pipe 1 and the branch pipes 2 and 3 is preferable because it eliminates the need for sterilization before use. (It is preferable that the discharge pipe 4 be kept the same).

(8) A bellows part may be formed in the branch pipes 2 and 3 entirely or partially so that the pipes can be easily bent. However, from the viewpoint of preventing irritation to the patient, it is preferable to make the outer peripheral surfaces of the branch pipes 2 and 3 smooth.

(9) The most important point in the present invention is that the branch pipes 2 and 3 enable simultaneous suction of contaminated liquid from different positions along the lower front teeth in the oral cavity. And 3 can be made into one long pipe without being divided from each other (a part of the main pipe 1 interposed between the pair of left and right branch pipes 2 and 3 becomes one long branch pipe). It can be thought of as part of a tube). The main pipe 1 has a function of transmitting a suction force, that is, a suction pressure, into the branch pipes 2 and 3.As long as such a function is satisfied, a connection method for the branch pipe can be appropriately adopted. It is. It is theoretically possible to provide two main tubes 1 left and right away from each other (in this case, multiple main tubes are finally merged into one and connected to the suction device). Is preferable). Industrial applicability The present invention can be used in the field of dental treatment and the like.

Claims

The scope of the claims

1.

A main body tube with a central suction port formed at the tip,

Has,

An intraoral drainage device, characterized in that:

2. In Claim 1,

The intraoral drainage device, wherein the pair of left and right branch pipes are set to be located in a plane substantially orthogonal to an axis of the main body pipe.

3. In claim 1,

The intraoral drainage device, characterized in that the branch pipe is formed of an elastic member and can be easily bent and deformed by applying a slight external force.

4. In Claim 3,

The intraoral drainage device, wherein the branch tube is formed of a rubber tube.

5. In Claim 4,

The intraoral drainage device, wherein the branch tube is made of silicon rubber.

6. In claim 1,

The intraoral cavity, wherein the branch tube is configured to be able to bend by applying an external force, and to maintain a curved shape before the external force is removed when the external force is removed. Drainage device.

7. In Claim 6,

The branch pipe is provided in a wall of an elastic pipe made of an elastic member, and substantially the entire length of the elastic pipe. An intraoral liquid drainage device, comprising: burying a metal shape maintaining wire for a period of time.

8. In claim 1,

The intraoral drainage device, wherein the side suction port formed in the branch tube is set so as to include at least a distal end opening of the branch tube.

9. In Claim 8,

An intraoral drainage device, further comprising a space setting means for preventing the distal end opening of the branch pipe from being blocked by an inner wall of the oral cavity.

10. In claim 8,

A spherical portion having a diameter larger than the diameter of the branch pipe is formed at the distal end opening of the branch pipe,

A communication passage is formed in the spherical portion to allow the distal end opening of the branch pipe to communicate with the outside.

An intraoral drainage device, characterized in that:

1 1. In claim 10,

Wherein the spherical portion is formed separately from the branch tube, and has a connecting cylindrical projection fitted into a distal end opening of the branch tube.

1 2. In claim 11,

Of the spherical portion connected to the distal end opening of the branch pipe, a plurality of grooves are formed on the spherical distal end surface side, the grooves extending in the suspect direction and communicating with each other,

The intraoral drainage device, wherein the communication passage formed in the spherical portion is opened at a bottom surface of the plurality of grooves.

1 3. In claim 1,

The side suction port formed in the branch pipe is set so as to include a plurality of small holes formed in a side face of the branch pipe.

1 4. In claim 1, An oral cavity, wherein the side suction port formed in the branch pipe is set to include a tip opening of the branch pipe and a plurality of small holes formed in a side surface of the branch pipe. Internal drainage device.

1 5. In claim 1,

The intraoral drainage device, wherein the branch tube is formed to be transparent or translucent so that the inside can be seen through.

1 6. In claim 1,

The intraoral drainage device, wherein the main body tube is formed to be transparent or translucent so that the inside thereof can be seen through.

1 7. In claim 1,

The intraoral drainage device, wherein each of the pair of left and right branch pipes is formed in a flat shape in which the height in the vertical direction is larger than the width in the horizontal direction.

1 8. In claim 1,

The main body pipe and the pair of left and right branch pipes are formed separately from each other,

In the main body tube, a collecting chamber is formed in which the central suction port and the pair of left and right branch tubes communicate with each other,

A discharge port communicating with the collecting chamber is formed on a base end side of the main body tube which is an end opposite to the central suction port,

An intraoral drainage device, characterized in that:

1 9. In claim 18,

The intraoral drainage device, wherein the pair of left and right branch pipes are respectively connected to the main pipe in a detachable manner in a fitting manner.

20. In claim 19,

The intraoral drainage device, wherein the main body tube has a pair of left and right cylindrical connecting portions, and the branch tube is fitted around an outer periphery of the cylindrical connecting portion.

2 1. In claim 18,

An intraoral drainage device, further comprising a discharge pipe connected to the discharge port and having a hook-like portion.

2 2. In claim 21, The intraoral drainage device, wherein the main body tube and the discharge tube are formed separately.

2 3. In claim 21,

The intraoral drainage device, wherein the main body tube and the discharge tube are formed in a body.

2 4. In claim 21,

At least a portion between the hook-shaped portion and the main body tube of the discharge pipe is formed in a flat shape so that a width in the left-right direction is larger than a thickness. Utensils.

25. In claim 1,

The intraoral drainage device, wherein the main body tube and the branch tube are formed in a body.

2 6. In claim 25,

The intraoral drainage device, further comprising a discharge pipe connected to the main pipe, wherein the discharge pipe is also integrally formed with the main pipe and the branch pipe.

27. In claim 1,

A part of each of the branch pipes is bundled with each other by a predetermined length, and the main body pipe is constituted by the bundled parts;

2 8. In claim 27,

A drainage pipe is connected to the bundled portion, and the branch pipes communicate with each other via the drainage pipe.

2 9. In Claim 1,

An intraoral drainage device, wherein a collecting chamber is formed in the main body tube, in which the central suction port and the side suction port communicate with each other.

30. In claim 29,

The intraoral drainage device, wherein the central suction port is communicated with the collecting chamber via an elongated passage.

3 1. In claim 1, An intra-oral drainage device, comprising: a marginal space setting means for preventing the central suction port from being blocked by the inner wall of the oral cavity.

3 2. In claim 1,

The vicinity of the confluence of the main pipe and the pair of left and right branch pipes is configured as a substantially T-shape having one common pipe portion,

The central suction port is opened in a tip tube wall on an extension of the common tube portion,

A discharge pipe connected to a suction device is connected to the common pipe section.

An intraoral drainage device, characterized in that:

3 3. In claim 1,

The main body pipe is formed by a T-shaped pipe, and has one short common pipe part and a pair of left and right branch pipe connection parts smaller in diameter than the common pipe part,

The branch pipe is connected to the branch pipe connection part;

An intraoral drainage device, characterized in that:

3 4 · In Claim 1,

A main branch pipe extending substantially to the left and right of the main pipe so as to penetrate the main pipe substantially perpendicularly to the main pipe and in a liquid-tight manner;

A portion of the common branch pipe that extends longer in the left-right direction than the main pipe is configured as the pair of left and right branch pipes,

A communication port opened toward a base end side of the main pipe is formed in a pipe wall of a central pipe portion located in the main pipe in the common branch pipe,

The central suction port is communicated with a base end side of the main body pipe through a gap formed around the central branch pipe portion in the main body pipe.

An intraoral drainage device, characterized in that:

3 5. In claim 34,

The intraoral drainage device, wherein the central suction port is largely opened so as to have substantially the same size as the inner diameter of the main body tube.

36. In claim 34,

The common branch pipe has a three-part configuration including a short central pipe part penetrating the main pipe, and the pair of left and right branch pipes connected to ends of the central pipe part. Oral drainage device.

3 7. In claim 36,

The intraoral drainage device, wherein the main tube and the central branch tube are integrally formed of a synthetic resin.

3 8. In claim 34,

The intraoral drainage device, wherein the common branch pipe is constituted by one long pipe so as to constitute the central pipe part and the pair of left and right branch pipes as a whole.

3 9. In claim 38,

The intraoral drainage device, wherein the common branch pipe is formed so as to be easily curved.

4 0.

A set body of a main body pipe and a number of branch pipes which are detachably connected to the main body pipe and set to include ones having different shapes from each other;

The main body pipe has a collecting chamber formed therein, a discharge port formed at an upper position so as to communicate with the collecting chamber, a central suction port opened at a lower surface, and a plurality of formed at a side portion. A pair of left and right connecting portions to which a branch pipe arbitrarily selected from the branch pipes is connected.

41. In claim 40,

The intraoral drainage device, wherein the plurality of branch pipes are configured as a set having at least one of different lengths and degrees of curvature.

4 2. In claim 41,

The plurality of branch pipes include a plurality of basic branch pipes set to have different degrees of curvature from each other, and a plurality of base branch pipes which are set for each of the basic branch pipes and correspond to the degree of bending of the basic branch pipes. An intraoral drainage device characterized in that it is configured as a set of a plurality of subordinate branch tubes having a different degree of curvature and different length from the basic branch tube. 4 3.

A branch pipe adapted to take a substantially horseshoe shape as a whole,

Each tip of the branch pipe is opened as a suction port, and a plurality of suction ports are formed in a side wall of the branch pipe at intervals in a longitudinal direction of the branch pipe. Liquid tool.

4 4 In claim 43,

The intraoral drainage device, wherein the branch pipe is formed of an elastic member.

4 5. In claim 44,

The main body tube is one,

The intraoral drainage device, wherein the body tube is communicated with the branch tube at a substantially middle position in the longitudinal direction of the branch tube.

4 6. In claim 44,

The intraoral drainage device, wherein the branch pipe and the main pipe are formed separately and connected to each other.

47. In Claim 45,

The main body tube is set to be located entirely in the oral cavity,

The intraoral drainage device, wherein the branch pipe is connected to an external suction device via a drain pipe connected to the main pipe.

48. In Claim 45,

The intraoral drainage device, wherein the suction port is formed near a confluence of the main pipe and the branch pipe.

4 9. A set of a main body pipe and a pair of left and right branch pipes each made of an elastic member having an opening at each end and a small hole formed in a side wall,

The intraoral drainage device, wherein each of the branch pipes is connectable to the branch pipe connection portion in a fitting manner.

50 In claim 49,

An intraoral drainage device characterized in that the intraoral drainage device is configured as a set body further including a drainage tube which is connectable to the common pipe portion and has a hook-like portion.

5 1

An assembly room is formed inside,

At the upper part, an outlet opening to the collecting chamber is formed,

In the lower part, a central suction port is formed so as to open to the collecting chamber, and on a side part, a pair of left and right branch pipe connecting parts formed so as to open to the collecting chamber are formed. Body tube for drainage device.

5 2.

It is configured as a tubular with both ends open,

It is configured so that it can easily bend when subjected to external force,

Multiple small holes are opened on the side,

A branch pipe for an intraoral drainage device.

5 3. In claim 52,

The branch tube for an intraoral drainage device, wherein the branch tube is formed of a rubber tube.

5 4.

A supply device for an intraoral drainage device, wherein a long rubber tube having small holes at predetermined intervals in an axial direction is wound. 55. In Claim 54,

Reel and A holder that rotatably holds the reel,

The long rubber tube is wound around the reel,

A supply device for a branch tube for an intraoral drainage device, characterized in that:

56. In any one of claims 1 to 50,

The intraoral drainage device, wherein a thin plate-shaped holding piece is integrated with a lower part of the branch pipe.