Detailed description of the invention
Disposable endoscope can be formed as after image unit and the wirning harness that is attached thereto are installed according to disposable endoscope pipe of the present invention, disposable endoscope pipe refers to the mechanical part of disposable endoscope, because mechanical part and circuit part have relatively independent function, therefore the present invention is using disposable endoscope pipe as theme, for the purpose of understanding, be that object carries out overall description with disposable endoscope in the following specifically describes.
Embodiment 1
A kind of embodiment according to disposable endoscope of the present invention can refer to Fig. 2 to Fig. 4, comprises tubular part 201, wire driving member 202, image unit 203, wirning harness (not shown), clad (not complete diagram), union joint 205 and one-time fix part 206.
Tubular part 201 has multiple joint 2011.Tubular part can adopt the various structure that can be realized controllable type bending operation by wire driving member, and be only example shown in figure, present embodiment is not construed as limiting this.In addition, for ease of presenting tubular part, the clad part of not shown parcel tubular part in Fig. 2.Due to without the need to reusing, for reducing costs better, tubular part can adopt the materials such as plastic cement, uses the simple processing technique such as such as injection mo(u)lding to make.
In wire driving member 202 tubular parts, one end is fixing relative to one of the joint of tubular part, such as usually can be fixed on juxtra-articular foremost, the other end is fixed with the first joint 2021, and the movement along its length of wire driving member can drive tubular part to bend.Wire driving member can adopt steel wire usually, also can adopt the intensity of other kinds and the satisfactory material of retractility.
Image unit 203 is arranged on tubular part front end.Image unit can adopt the various structure that can realize digital image acquisition, such as, routinely, can comprise camera lens, sensitive chip, lighting module and provide the integrated circuit board etc. of respective control function.As the preferred scheme of one, the LED cold light source that lighting module can adopt brightness adjustable.Image unit both can adopt existing general small-size photographic head assembly, the such as common photographic head assembly on mobile phone, also can adopt the purposes aiming at disposable endoscope and the photographic head assembly made, such as, can be designed to that there is the cylindrical shape suitable with tubular part diameter.The photographic head assembly of design specialized form one of ordinary skill in the art will readily recognize that because photographic head technology is very ripe, even if also can not cause the significant change of cost.It should be noted that, image unit is divided into two parts from tubular part based on functions different separately, and the mechanical structure portion of the two can be fusion together, and such as, the encapsulating structure of image unit can be integrated with the Front-end Design of tubular part.Or namely the encapsulating structure of image unit itself becomes a part for the front end of tubular part.
Wirning harness is due to hidden not shown in inside configuration.One end of wirning harness connects image unit, and the other end is used for external power supply and data handling equipment (such as main frame), so that power for image unit and transmit the view data collected.It is worth mentioning that, existing endoscopic system adopts proprietary power supply and data mode usually, and this makes circuit more complicated, and needs to use custom-designed electrical connector, thus forms technology barriers.But based on the photographic head technology of maturation, have ready conditions and adopt more succinct line construction, therefore as one preferred embodiment, general electric connection mode can be adopted according to the wirning harness in disposable endoscope of the present invention, such as based on the connected mode of general usb protocol, to carry out the transmission of power supply and data.This can not only reduce the quantity (a kind of typical situation is 5) of circuit in wirning harness, also the circuit interface between endoscope and main frame is made to have good versatility, effectively can reduce the development difficulty of host computer system, thus reduce the holistic cost of endoscopic system.Have reason to believe, the main frame realizing endoscopic system by installing suitable process software on conventional computer hardware can realize.
Clad is wrapped in wire driving member and the wirning harness outside of tubular part and extension.It is easily understood that based on the difference of institute's cladding parts, clad can be divided into different parts and adopt different materials and different method for packing.Such as, tubular part self has had supportive structure and has needed bending, therefore thin film (not shown) can be adopted to wrap up, and from the wire rod that tubular part extends, not there is supportive structure, therefore can use to the part of union joint from tubular part tail end and there is certain thickness flexible pipe 204 as clad.Due to without the need to reusing, also the erosion needing to resist harsh sterile environment need not be considered, as one preferred embodiment, the clad at each position all can be monolayer, so not only packaging technology is simple but also can effectively reduce the diameter of endoscope, thus reduces misery when patient checks.Owing to durable corrosion-resistantly waiting requirement to clad without the need to having, generally speaking select biocompatibility good material, such as, thin film can adopt medical thermoplastic elastic film (TPE/TPR) etc., and flexible pipe can adopt medical silica-gel etc.
Union joint 205 is arranged at wire driving member one end away from tubular part, union joint is provided with the through hole 2051 passed for the first joint.Owing to belonging to medical disposable material part, and structure is relatively simple, and union joint can adopt plastic cement material, is produced by simple process such as injection mo(u)ldings.
One-time fix part 206 for being fixed relative to union joint by the first joint, when one-time fixing after part removes, the first joint can move along its length in the through hole of union joint.One-time fix part to be mainly used in being fixed the first joint before union joint is connected to Connection Block, so that carry out attended operation, after attended operation completes, namely removablely one-time fix part.
In present embodiment, as the preferred structure of one, first joint 2021 is cylindricality, the cross sectional dimensions of the through hole 2051 of its cross sectional dimensions and union joint is suitable, the bossed male joint 20211 of its end tool, for removably engaging to the corresponding joint of external control block, particularly, for engaging to the corresponding female joint of external control block.One of ordinary skill in the art will readily recognize that the first joint is interchangeable to the syndeton on the corresponding joint of external control block, the first joint such as, can be set to the female joint of caving in, and the male joint of projection is arranged in external control block.
It is worth mentioning that, because the first joint belongs to consumptive material part, and external control block belongs to standing non-consumptive material part, therefore when designing syndeton each other, can consider manufacture difficulty is low or material is required that low structural design is on the first joint, and by make relative complex or to the high structural design of reliability requirement in control block.
The structure of the first joint in present embodiment is only example, one of ordinary skill in the art will readily recognize that and various dismountable frame for movement can be adopted to realize the joint of the first joint and corresponding joints.Such as, in one embodiment, the first fitting end is ring-type, and corresponding joints then has the controlled pincer-like end of opening and closing, make its ring clamping the first fitting end realize engaging by closed pincer-like end, then make its ring discharging the first fitting end realize dismounting by opening pincer-like end.And for example, in one embodiment, the first fitting end still can adopt the male joint of the present embodiment shape, the grasping mechanism that corresponding joints then adopts degree of tightness controlled, realizes engaging by the cervical region of promptly male joint.Obviously, based on existing mechanics knowledge, can design various attainable detachable juncture, therefore the concrete structure of the first joint is not construed as limiting the invention.In addition, the connection implementation of relative size between first joint and the through hole of union joint also with concrete is relevant, belong to design feature, in present embodiment, the through hole of union joint is equivalent to restriction first joint only can the position-limit mechanism of movement along its length, makes it possible to the displacement controlling the first joint better.In other connected mode, such as, when one-time fixing the multiple dimensions of part to the first joint and having carried out fixing, the first joint also may have larger size difference compared with the through hole of union joint.
In present embodiment, as the preferred structure of one, the end face center of union joint 205 is also provided with spacing hole 2052, for engaging to the corresponding position limiting pile of external control block.Easy understand, the position of spacing hole and position limiting pile can exchange, and considers that union joint belongs to consumptive material part, is preferably arranged on union joint by spacing hole, is conducive to saving material.This soundness that the structure that the end face center of union joint is connected with the end face center of control block effectively can be strengthened the connection between disposable endoscope and permanent part, guarantees that the connection of mechanical driving part can smooth and easyly run.Similar with the first joint, the concrete fit structure of spacing hole and position limiting pile can design according to various existing mechanics knowledge, such as, adopt the clamped design of spring clip type, or relies on the tight fit design etc. of the frictional force between material merely.
In present embodiment, exemplary, the first joint 2021 has four, and the through hole 2051 on union joint 205 is arranged on circumferentially same around the end face center of union joint.Obviously, the quantity of the first joint is determined by the quantity of wire driving member, and therefore, according to different mechanical transmission structures (structure that tubular part matches with wire driving member), the quantity of the first joint may be different.In present embodiment, this uniform arrangement of through hole 2051 makes attended operation more convenient and can provide better operational stability.
In present embodiment, as the preferred structure of one, the end face of union joint 205 is also provided with conductive contact 2053, each conductive contact is connected with each line electricity in wirning harness respectively, when the first joint engages to the corresponding joint of external control block, conductive contact is electrically connected for the conductive interface corresponding in control block, thus realizes the object of external power supply and data handling equipment by the circuit in control block.This preferred structure makes the dual connection that can be completed machine driving and the signal of telecommunication by an attended operation of union joint, improves the convenience using disposable endoscope.In other embodiments, also can adopting the way similar with existing endoscope, by the special opening on union joint, wirning harness be drawn, being then directly connected with providing the main frame of power supply and data processing function.
In present embodiment, as the preferred structure of one, union joint 205 is also provided with biopsy entrance 2054 and gas injection water filling inlet 2055, the encapsulating structure of image unit is correspondingly provided with the through hole (not shown) being communicated with tubulose components interior, the passage started from biopsy entrance and gas injection water filling inlet passes union joint, is communicated to the corresponding through hole on the encapsulating structure be positioned at foremost through flexible pipe and tubular part inside always.This preferred structure further increases the function i ntegration degree of union joint, (only need the shape of design injection mold and increase by two plastic tubes as interface channel) under the prerequisite substantially not increasing extra cost, making disposable endoscope that the armarium such as biopsy forceps and air pump water pump can be coordinated to use.In other embodiments, also can not arrange or select one as required and biopsy entrance and gas injection water filling inlet are set.
In present embodiment, as the preferred structure of one, one-time fix part 206 for arc buckle, the cross-sectional profiles of its shape and union joint 205 is suitable, the inwall of arc buckle has inside projection 2061, the side that the sidewall of union joint has locating hole 2056, first joint being through to through hole 2051 has the shrinkage pool 20212 corresponding with position of positioning hole, and the locating hole that protrudes through of arc buckle snaps in the shrinkage pool of the first joint side and is fixed.For guaranteeing disposable character, arc buckle can adopt fragility material to make, to make when removing from union joint and damaged and can not reuse, or, in other embodiments, the two ends of arc buckle also can be connected by rapid wear portion and form closed ring-type, by being removed in rapid wear portion thus making arc buckle unclamp and remove from union joint during use.Easy understand, the concrete structure one-time fixing part is not limited to above-mentioned example, if the design of syndeton changes, based on existing mechanics knowledge can design equally mate with syndeton one-time fix structure.
Embodiment 2
The present embodiment provides a kind of preferred structure according to the tubular part in disposable endoscope of the present invention.With reference to Fig. 5 to Fig. 7, the tubular part with this preferred structure comprises multiple annular unit 501, each annular unit comprises cylindrical shell 5011 and is positioned at the journal stirrup 5012 that cylindrical shell both sides extend vertically, the cross section of cylindrical shell has the through hole 5013 passed for wire driving member (not shown), the end of journal stirrup has the pin 50121 of radially projection, the sidewall of cylindrical shell has the connecting hole 50111 suitable with pin, journal stirrup on same cylindrical shell and connecting hole are that decussation is arranged, annular unit is by being connected to each other in the connecting hole that the pin of self snapped in adjacent annular unit, namely junction is formed as joint, the profile at the connected position of two adjacent annular unit is wedge shape (shown in broken lines in Fig. 6), the drift angle of wedge shape is positioned at joint.Easy understand, the annular unit being positioned at tubular part head end and/or end can have the structure different from the annular unit at middle part, so that connect miscellaneous part.The annular unit of such as end can have the cylindricality afterbody of extension so that connecting hose, and for example the annular unit of head end can be combined as a whole with the encapsulating structure of installed image unit, and the annular unit of head end can not have journal stirrup and only have the connecting hole connected for subsequent cell.Aforementioned " multiple annular unit " can be interpreted as that tubular part has the set of mutually isostructural middle part annular unit except head and the tail.
The preferred structure of above described tubular parts has plurality of advantages: on the one hand, each annular unit can adopt to be had certain elastic plastics and is made by injection mo(u)lding, when adjacent two annular units connect, a hands extrudes one of them journal stirrup (making the pitch smaller between journal stirrup), another hands extrudes another cylindrical shell (making spacing between connecting hole become large), then the pin on journal stirrup is snapped in the connecting hole on another cylindrical shell, remove extruding force, annular unit recovers the connection that namely deformation complete adjacent two joints, the assembling of whole tubular part can complete without the need to instrument is free-hand, simple for assembly process, on the other hand, wedge shape between adjacent two annular units formed by the shape of annular unit is made a concession angle and is made each joint have larger activity space, be conducive to tubular part and realize larger angle of bend, make disposable endoscope have range of observation more flexibly.
Embodiment 3
A kind of embodiment according to disposable endoscope equipment of the present invention can refer to Fig. 8, and comprise disposable endoscope 200 and control block 300, wherein disposable endoscope 200 adopts the structure described by embodiment 1.The structure of control block 300 can refer to Fig. 8 to Figure 11, comprises the second joint 301, conductive interface 302, Connection Block 303, driving mechanism 304 and limit switch 305.
Second joint 301 is for removably engaging with the first joint.Based on the corresponding relation with structure in embodiment 1, in present embodiment, as the preferred structure of one, the second joint is cylindricality, its cross sectional dimensions is consistent with the cross sectional dimensions of the first joint, and its end has the female joint 3011 of the depression corresponding to the first joint.Female joint lateral opening, makes corresponding male joint can screw in from opening part, realizes engaging.Same corresponding with the first joint, the second joint has four, is arranged on circumferentially same around Connection Block end face center.
Conductive interface 302 is for being electrically connected with the wirning harness of disposable endoscope.Because the wirning harness in embodiment 1 is that the conductive contact 2053 that end face by union joint 205 is arranged is derived, therefore in present embodiment, as the preferred structure of one, conductive interface 302 is arranged on the end face of Connection Block 303, its position designed to be able to and conductive contact is contacted when the first joint engages with the second joint with conductive interface, thus completes electrical connection.Particularly preferably, if the wirning harness of disposable endoscope adopts USB transmission means, then conductive interface 302 can have 5 contacts, specifically can adopt the spring contact etc. of such as slightly outstanding end face, to strengthen the reliability be connected with the conductive contact on endoscope union joint.
Connection Block 303 is provided with the through hole 3031 passed for the second joint 301, similar with the matching relationship of the through hole of the first joint and union joint, the cross sectional dimensions of the through hole of Connection Block and the cross sectional dimensions of the second joint suitable.When the first joint engages with the second joint, the through hole 3031 of Connection Block aims at the through hole 2051 of union joint, after making two joints combine, under the transmission of driving mechanism, two joints can move in the through hole be communicated with, thus driving force is conducted to Linear transmission part swimmingly.Based on the corresponding relation with structure in embodiment 1, in present embodiment, as the preferred structure of one, the end face center of Connection Block is also provided with the position limiting pile 3032 corresponding to the end face center of union joint, for engaging with spacing hole 2052.As a kind of exemplary structure, position limiting pile has the locking projection 30321 radially extended, spacing hole inwall has the axial slide 20521(that mates with locking projection see Fig. 3), and be positioned at the circumference chute 20522 of the degree of depth matched with the axial location of locking projection, position limiting pile can be engaged with described spacing hole by rotating after insertion spacing hole; The rotary course of described position limiting pile and spacing hole and described male joint screw in the course synchronization of female joint.
Driving mechanism 304 is connected with the second joint, for controlling the movement along its length of the second joint.Easy understand, driving mechanism can adopt various suitable machinery or motorized motions mode, and the present embodiment is not construed as limiting the type of drive of driving mechanism and concrete structure.Such as, step motor drive belt pulley can be adopted, and the belt that belt pulley drives is fixed on the tail end of the second joint.
Limit switch 305 is for fixing the second joint relative to Connection Block or discharging.Before execution attended operation, limit switch is similar with the function one-time fixing part, for fixing the second joint so that carry out attended operation; After attended operation completes, limit switch also needs release second joint to make it to move along through hole.With one-time fix part unlike, after disposable endoscope is used to complete, limit switch also needs again to be fixed the second joint, so that carry out the dismounting connected, therefore limit switch can be understood to the frame for movement with the duty that two can switch in turn, and those skilled in the art can design its concrete structure accordingly.
In present embodiment, as the preferred structure of one, limit switch 305 is arranged at the side, the back side of Connection Block 303, comprise slide block 3051 and limiting plate 3052, slide block is arranged in the slideway 3053 that the moving direction along the second joint extends, can be displaced into latched position and off-position along slideway, the length of slideway is greater than the range (being such as generally 2 to 3 centimetres) of the second joint, and limiting plate is fixedly connected with slide block.When slide block is positioned at latched position AA, limiting plate abuts the rear end face BB of the second joint, and by spacing for the second joint in the through hole of Connection Block, when slide block is positioned at off-position CC, the second joint can move in the space before limiting plate.Further preferably, for the reliability and stability of enhancing operation, slide block and slideway can be symmetricly set in the both sides of the moving direction of the second joint, limiting plate is connected between two slide blocks, slideway specifically can be arranged on the framework of the housing being formed as control block, and slide block profile can be designed to the shape being convenient to finger push.Easy understand, based on above-mentioned preferred structure, the length of the second joint is consistent with the length of the through hole of Connection Block, therefore when needs carry out attended operation, limiting plate by spacing for the second joint in the through hole of union joint, the female joint at the second joint top just in time with the end face of Connection Block, and the male joint at the first joint top one-time fix part fixing under also just in time protrude from the end face of union joint, two joints can be connected.
For understanding above-described embodiment better, below brief description is carried out to the use procedure of the disposable endoscope equipment based on embodiment 3:
One, prepare: determine disposable endoscope 200 to one-time fix part 206 intact, determine that the limit switch 305 of control block 300 is in latched position.
Two, connect: the spacing hole 2052 on the union joint of disposable endoscope is aimed at the position limiting pile 3032 on Connection Block, particularly, locking projection 30321 is aimed at axial slide 20521, then insert, when the end face of union joint and Connection Block is fitted, the male joint 20211 of the first joint is inserted in the opening of female joint 3011 side of the second joint, the direction entering this opening with tailing edge (uses for ease of operator, can by the arrow mark of direction indication on the cylinder of Connection Block) rotary connecting joint, make male joint and female joint, spacing hole and position limiting pile synchronously engage, now, the through hole of union joint aligns with the through hole of Connection Block, and the conductive contact 2053 on union joint end face is electrically connected with the conductive interface 302 on Connection Block end face.
Three, use: after having connected, remove and one-time fix part, and limit switch is pushed into off-position, namely by control driving mechanism 304(such as by the button on operation driving mechanisms control panel or use a teleswitch) camera site of image unit 203 and angle are controlled, obtain the view data that image unit gathers.
Four, remove: after being used to complete, limit switch is returned to latched position and (both directly after end uses by limit switch, the second joint can be pushed back through hole, and synchronously complete reset and spacing operation; Also first can control driving mechanism makes the second joint reset, and then uses limit switch to carry out spacing to the second joint), according to the direction rotary connecting joint contrary with when connecting, after engaging release, union joint is extracted.The disposable endoscope pulled down is discardable, uses new disposable endoscope to repeat said process and can continue to check patient, without the need to waiting for.
More than apply specific case to set forth principle of the present invention and embodiment, should be appreciated that, above embodiment just understands the present invention for helping, and should not be construed as limitation of the present invention.For one of ordinary skill in the art, according to thought of the present invention, can change above-mentioned detailed description of the invention.