KR102694327B1 - Circular stapler - Google Patents

Abstract

The present invention provides a circular stapler comprising: an anvil; a trocar coupled to the anvil and moving the anvil; a head including a cartridge for accommodating a stapler in which staples received according to the movement of the anvil are located; and a staple drive for extracting the stapler; wherein the head includes a first head cover and a second head cover which moves above the first head cover so that the cartridge is exposed so that the staple and the blade are exposed and the two human tissues are anastomosed through pressure with the anvil.

Description

Circular stapler

The present invention relates to a circular stapler, and more specifically, to a circular stapler that can be used in laparoscopic surgery.

The currently used circular saw can be largely divided into two parts: the anvil and the body.

The anvil is a relatively simple shape, connected to the body to press the tissue, and the stapler needle of the diagonal shape that comes out of the body forms a “B” shape, and at the same time, it serves as a support for the round blade that comes out of the body to create a circular hole in the tissue.

The cartridge is a complex structure that can be roughly divided into three parts: the handle, the shaft, and the head (where the stapler needle, blade, etc. are intricately arranged).

The handle has a rotating attachment that tightens the tissue between the head and the anvil, and a large trigger-like part that is operated after the safety is removed, and causes the staple to advance while simultaneously cutting the tissue in a circular motion. The important operating devices are located on the neck.

The handle has an iron structure inside that can move forward and backward by means of a rotating mechanism on the neck, and this is an iron structure that extends out from the head and is connected to a needle that is connected to the anvil.

Also, outside the iron structure, the plastic structure is inserted between the head and the anvil of the body by the iron structure, and then the plastic structure is advanced by the operation of the large trigger in the handle part, which actually moves the stapling and the blade.

The head part is intricately composed of a stapler needle, a structure that supports the stapler needle, a structure that pushes the stapler needle to perform stapling, and a blade.

Since the handle has a steel structure on the inside and a plastic structure on the outside, it is difficult to make a thinner and more curved shape. Also, since it is made of one piece from the handle to the head, not to mention the handle, the head is about 3 cm in diameter, so it is impossible to insert it with a laparoscopic trocar with a maximum diameter of 15 mm.

Recently, a circular stapler has been studied to enable surgery by combining it with a laparoscopic trocar.

The purpose of the present invention is to provide a circular stapler that can be used in laparoscopic surgery.

In addition, an object of the present invention is to provide a circular stapler that can be used by separating the handle and cartridge.

In addition, an object of the present invention is to provide a circular suture device that can be inserted into a laparoscopic trocar by reducing the diameter of the head and the handle.

The purposes of the present invention are not limited to the purposes mentioned above, and other purposes and advantages of the present invention which are not mentioned can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. In addition, it will be easily understood that the purposes and advantages of the present invention can be realized by the means and combinations thereof indicated in the claims.

A circular stapler according to the present invention comprises an anvil, a trocar coupled to the anvil and moving the anvil, a head including a cartridge for accommodating a stapler in which staples received according to the movement of the anvil are located, and a cartridge including a staple drive for extracting the stapler, wherein the head may include a first head cover; and a second head cover which moves above the first head cover so that the cartridge is exposed so that the staples and the blade are exposed and the two human tissues are anastomosed through pressure with the anvil.

The above cartridge is coupled with a trocar transporter coupled with the above trocar and is detachable from a handle including an adjustment knob for moving the second head cover in the same manner as the above anvil.

The above second head cover can be formed integrally with the cartridge.

The second head cover may partially overlap with the first head cover.

The above first head cover may be formed with a guardrail to prevent the second head cover from coming off.

The above first head cover may have a home line formed therein for movement of the second head cover.

The circular stapler according to the present invention has the advantage of being able to be used by inserting it into a laparoscopic trocar because the diameters of the head and the handle are reduced.

In addition, the circular stapler according to the present invention has the advantage of reducing risks during laparoscopic surgery.

Meanwhile, the effects of the present invention are not limited to the effects mentioned above, and various effects may be included within a range obvious to those skilled in the art from the contents described below.

Figure 1 is a perspective view showing a circular jointer according to the present invention.
Figure 2 is an enlarged cross-sectional view showing the cartridge shown in Figure 1.
Figure 3 is an exemplary diagram explaining the operation of the cartridge shown in Figure 2.

The present invention can be modified in various ways and has various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, but should be understood to include all modifications, equivalents, or substitutes included in the spirit and technical scope of the present invention. In describing each drawing, similar reference numerals are used for similar components.

The terms first, second, A, B, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term and/or includes a combination of a plurality of related described items or any one of a plurality of related described items.

When it is said that a component is "connected" or "connected" to another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. On the other hand, when it is said that a component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

The terminology used in this application is only used to describe specific embodiments and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, it should be understood that the terms "comprises" or "has" and the like are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms defined in commonly used dictionaries, such as those defined in common usage dictionaries, should be interpreted as having a meaning consistent with the meaning they have in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a perspective view showing a circular stapler according to the present invention, and FIG. 2 is an enlarged cross-sectional view showing the cartridge shown in FIG. 1.

Referring to FIGS. 1 and 2, the circular stapler may basically include a cartridge (not shown) including a body (10), a neck (20), and a head (30), and an anvil (40).

Here, an adjusting knob (43) may be provided at the end of the main body (10).

This control knob (43) drives the trocar (47) exposed from the head (30) through the trocar slide (45) provided on the neck (20) to move the anvil (40).

That is, when the user rotates the control knob (43), the anvil (40) moves toward or away from the head (30, cartridge (200, cartridge)). In addition, a trigger (33, trigger) is rotatably coupled to one side of the main body (10).

This trigger (33) drives the staple drive provided in the head (30) through the drive slide (35) provided inside the neck (20) to extract staples (S) from the cartridge (200).

That is, when the user pulls the trigger (33), the head part (30) operates and a staple (S) is extracted from the cartridge (200).

The head (30) is a type of cover and can be formed in a tubular shape so that a space is provided inside.

A cartridge (200) and a staple drive (not shown) can be placed in the space of the head (30).

The head (30) may include a first head cover (110) and a second head cover (120).

Here, a tubular member (not shown) through which a trocar (47) can pass may be formed at the center of the first head cover (110), and a fastening hole may be formed in the second head cover (120) to which a fastening projection (not shown) formed on the outer surface of the cartridge (200) is coupled.

The first head cover (110) may be formed with a home line (L) along which the second head cover (120) can move and a guardrail (P) to prevent the second head cover (120) from coming off.

The second head cover (120) may be formed to have a diameter larger than that of the first head cover (110). That is, the second head cover (120) may be joined so that one side overlaps one end of the first head cover (110).

The second head cover (120) can move above the first head cover (110) so that when the anvil (40) moves, the staple (S) and blade of the first head cover (110) are exposed, and the cartridge (200) is exposed so that two human tissues are anastomosed through pressure with the anvil (40).

The inner surface of the first head cover (110) may come into contact with a portion of the outer surface of the cartridge (200).

The cartridge (200) serves to accommodate a plurality of staples and is provided at one end of the head cover (100).

Here, the cartridge (200) is formed in an overall annular shape and may include a staple receiving portion and a contact portion.

At this time, the staple receiving portion (not shown) can receive a staple (S).

Meanwhile, the neck (20) can be separated and connected to the main body (10).

Here, the neck (20) separated from the main body (10) is inserted into the abdominal cavity with the head (30) portion facing the abdominal cavity, and conversely, the part of the neck (20) opposite the head (30) is pulled out through the laparoscope trocar (47) and connected to the main body (10) to perform a stamping operation.

Therefore, unlike the neck part of the conventional circular stapler that was too thick and required a separate wound on the patient's body instead of using a laparoscopic trocar, the present invention has the effect of allowing the stamping operation to be performed through a laparoscopic trocar without a separate wound on the patient's body by separating the neck (20) and the main body (10).

For reference, the above-described configuration is exemplary, and the circular stapler according to the present embodiment is not necessarily limited to the above-described configuration, and any type of circular stapler known in the art may be employed for the basic configuration.

Figure 3 is an exemplary diagram explaining the operation of the cartridge shown in Figure 2.

Figure 3(a) shows the human tissue before anastomosis, and Figures 3(b) and 3(c) show the operation of anastomosis of the human tissue.

Referring to FIGS. 3(a) to 3(c), the anvil (40) is coupled to the trocar (47) and is positioned to face the cartridge (200), and can move toward the cartridge (200) by moving the trocar (47).

At this time, the anvil (40) includes an opposing surface (not shown) facing one side (exposed surface) of the cartridge (200) from which the staple (S) is produced, and a guide pocket is formed on the opposing surface.

The above guide pocket guides the staple (S) to bend into a butterfly shape when the staple (S) is pulled out of the cartridge (200).

As described above, when the anvil (40) and cartridge (200) move in the staple (S) direction, pressure can be applied to the cartridge (200).

Specifically, after two human tissues are placed between the cartridge (200) and the anvil (40), when the anvil (40) moves toward the cartridge (200), the two human tissues are compressed between the cartridge (200) and the anvil (40), and pressure is applied to the cartridge (200).

At this time, the second head cover (120) can move over the first head cover (110), and the staple drive that pushes the stapler (S) is fixed to the first head cover (110), and the cartridge (200) and the second head cover (120) are combined and fastened to the first head cover (110), but are fastened in a form in which there are grooves and protrusions respectively so that they can move when a certain amount of force is applied, and when stapling, when a certain amount of force is applied, the second head cover (120) slides over the first head cover (110) and is pushed together with the cartridge (200), so that human tissue can be anastomosed.

That is, the main body (10) to which the trocar (45) is connected may be provided with a disconnection button that can separate the trocar (45).

The control knob (43) can be rotated to move the trocar (45) forward and backward in a spiral motion, and pressure can be applied to the cartridge (200) as two pieces of human tissue are compressed between the cartridge (200) and the anvil (40).

Thereafter, when the two human tissues are compressed, the safety device provided on the handle of the main body (10) is released, and the trigger is pushed to move the second head cover (120) over the first head cover (110), so that the anvil (40) presses the stapler frame provided in the cartridge (200), and stapling can be performed.

After stapled, the trigger returns to its original position, the safety device is re-engaged, the operating knob (43) is turned, and the tissue between the anvil (40) and the cartridge (200) is released, allowing the stapler (S) to be taken out.

In this way, unlike conventional circular staplers in which staples protrude directly from the head during operation, the circular stapler according to one embodiment of the present specification protrudes the staples as the second head cover (120) is pushed back and stapled.

Accordingly, the head (30) of the circular stapler of the present specification may omit the configuration that provides elasticity so that the staples can be protruded directly from the head, and the thickness of the head (30) and the neck (20) may be thinned by the amount of space in which the configuration providing elasticity existed.

Ultimately, through these differences, a thin neck (20) separated from the main body (10) can pass through the trocar, and the passed neck (20) can be combined with the main body (10) from the outside of the laparoscope to operate the suture device.

The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, etc. exemplified in each embodiment can be combined or modified and implemented in other embodiments by a person having ordinary knowledge in the field to which the embodiments belong. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the above has been described focusing on embodiments, these are merely examples and do not limit the present invention, and those with ordinary skill in the art to which the present invention pertains will recognize that various modifications and applications not exemplified above are possible without departing from the essential characteristics of the present embodiment. For example, each component specifically shown in the embodiments can be modified and implemented. And, the differences related to such modifications and applications should be interpreted as being included in the scope of the present invention defined in the appended claims.

Claims (6)

Anvil; and
A head including a trocar coupled with the anvil and moving the anvil, a cartridge accommodating a stapler in which staples received according to the movement of the anvil are located, and a staple drive for extracting the stapler,
The above head,
1st head cover;
The staple and blade are exposed and the cartridge is exposed so that the two human tissues are anastomosed through pressure with the anvil, and the second head cover is moved in the opposite direction of the two human tissues over the first head cover,
When the human tissue is placed between the cartridge and the anvil and the anvil moves in the direction in which the cartridge is located, the second head cover moves over the first head cover, and as pressure is applied to the cartridge, the anvil presses the stapler frame provided in the cartridge, so that the staple protrudes and stapling is performed.
Circular jointer. In paragraph 1,
The above head,
A handle is coupled with a trocar transporter coupled with the above trocar, and includes an adjustment knob that moves the second head cover in the same manner as the anvil, and is detachable from the handle.
Circular jointer. In paragraph 1,
The above second head cover,
Formed integrally with the above cartridge,
Circular jointer. In the first paragraph,
The above second head cover,
Part of which overlaps with the above first head cover,
Circular jointer. In the first paragraph,
The above first head cover,
A guardrail is formed to prevent the second head cover from coming off.
Circular jointer. In the first paragraph,
The above first head cover,
A home line is formed for the movement of the second head cover.
Circular jointer.

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