CN211633434U - Percussion reset mechanism and intracavity cutting anastomat using same - Google Patents

Abstract

The utility model discloses a percussion canceling release mechanical system and use this percussion canceling release mechanical system's intracavity cutting anastomat, include the loose pulley assembly who is suitable for the pulling guide rail that lies in one side that the guide rail deviates from the percussion push rod and is equipped with in the inner chamber of the afterbody casing of anastomat, reduce the effect that the guide rail drove the reset drive effort of percussion push rod reset in-process by loose pulley assembly for the effort that the one hand was applyed to the percussion push rod in the operation can reduce, thereby reaches laborsaving effect.

Description

Percussion reset mechanism and intracavity cutting anastomat using same

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a percussion canceling release mechanical system and use this percussion canceling release mechanical system's intracavity cutting anastomat.

Background

When the triggering transmission device is used in cooperation with the disposable intracavity cutting anastomat, a reset handle needs to be pulled after osculating is finished, so that a triggering push rod is driven to reset, and the reset of the triggering push rod is realized simultaneously, and the reset of a movable handle under the action of a reset spring is realized. In the process, the reset action of the firing push rod integrally depends on the acting force of the hand on the reset handle, in the operation process, an operator needs to hold the fixed handle of the anastomat with one hand, the operation on the reset handle can be operated only by using the other hand under the condition that no outsider assists, so that the effective reset operation can be realized only by applying a larger acting force to the reset handle under the condition that the reset handle is operated by one hand, and therefore, the whole reset operation is more laborious.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a percussion canceling release mechanical system to solve the technical problem that reduces the reset operation effort that the percussion push rod resets in-process needs.

The second purpose of the utility model is to provide an intracavity cutting anastomat to solve the technical problem that reduces the reset operation effort that the trigger push rod resets in-process needs.

The utility model discloses a percussion reset mechanism is realized like this:

a firing reset mechanism comprising: and a pulley component which is suitable for pulling the guide rail is arranged in the inner cavity of the tail shell of the anastomat and is positioned on one side of the guide rail, which is far away from the firing push rod.

In a preferred embodiment of the present invention, a pair of strip-shaped through grooves are symmetrically formed on two side walls of the tail housing corresponding to the side of the U-shaped connecting frame away from the guide rail, wherein the straight line of the guide rail is taken as a symmetry line;

the pulley assembly comprises a U-shaped connecting frame fixedly arranged at one end of the guide rail, which is far away from the trigger push rod, a movable pulley which is arranged in the U-shaped connecting frame and is suitable for driving the U-shaped connecting frame to move, and a fixed pulley which is arranged in the inner cavity of the tail shell and is positioned at one side of the U-shaped connecting frame, which is far away from the guide rail;

a pull rope is wound between the fixed pulley and the movable pulley; one end of the pull rope is fixedly connected with one end of the U-shaped connecting frame, which is far away from the guide rail, and the other end of the pull rope is fixedly connected with a movable shaft which simultaneously penetrates through the two side walls of the tail shell and is respectively provided with a strip-shaped notch.

In a preferred embodiment of the present invention, a pair of the strip-shaped through grooves are distributed along a direction parallel to the moving direction of the guide rail.

In a preferred embodiment of the present invention, the movable shaft includes a base portion adapted to move along the inside of the strip-shaped through groove, and a pair of wing portions respectively provided at both ends of the base portion and extending outside both side walls of the tail housing where the strip-shaped through groove is provided; wherein

The outer diameters of the wing parts are larger than that of the base part.

In a preferred embodiment of the present invention, the movable pulley is connected to the U-shaped connecting frame through a first connecting shaft; namely, the first connecting shaft is fixedly arranged in the hollow inner space of the U-shaped connecting frame, and the movable pulley is matched and connected with the first connecting shaft.

In a preferred embodiment of the present invention, the fixed pulley is connected to the side wall of the tail housing through a second connecting shaft; namely, two ends of the second connecting shaft are fixedly connected with the side wall corresponding to the inner cavity of the tail shell, and the fixed pulley is connected with the second connecting shaft in a matching mode.

In a preferred embodiment of the present invention, the outer diameter of the axle of the fixed pulley is larger than the outer diameter of the axle of the movable pulley.

The utility model discloses an intracavity cutting anastomat is realized like this:

an endoluminal cutting stapler comprising: the firing reset mechanism.

In a preferred embodiment of the present invention, the intracavity cutting stapler further includes a tail housing, a guide rail disposed in an inner cavity of the tail housing, a linkage shaft connected to the guide rail and adapted to move synchronously with the guide rail, and a pair of guide grooves symmetrically disposed on two side walls of the tail housing with a straight line on which the guide rail is disposed as a symmetry line;

the linkage shaft penetrates through the pair of guide grooves, and the part of the linkage shaft, which penetrates through the guide grooves and extends out of the outer side of the tail shell, is fixedly connected with a shifting button.

By adopting the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a percussion canceling release mechanical system and use this percussion canceling release mechanical system's intracavity cutting anastomat, through lie in the loose pulley assembly that one side that the guide rail deviates from the percussion push rod was equipped with be suitable for the pulling guide rail in the afterbody casing, reduce the effect that the guide rail drove the reset drive effort of percussion push rod reset in-process by loose pulley assembly for the effort that the singlehanded operation was applyed to the percussion push rod can reduce, thereby reach laborsaving effect.

Drawings

Fig. 1 is a schematic view of the external structure of the tail housing of the endoluminal cutting stapler according to the present invention at a first viewing angle;

FIG. 2 is a schematic view of the outer structure of the tail housing of the endoluminal cutting stapler of the present invention at a second viewing angle;

fig. 3 is a schematic view of the internal structure of the tail housing of the intracavity cutting stapler of the present invention at a first viewing angle;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic view of the inner structure of the tail housing of the endoluminal cutting stapler according to the present invention at a second viewing angle;

FIG. 6 is an enlarged view of the portion B of FIG. 5;

fig. 7 is a schematic structural diagram of the pulley assembly of the intracavity cutting stapler of the present invention.

In the figure: the tail part comprises a tail shell 1, a guide rail 2, a triggering push rod 3, a strip-shaped through groove 5, a U-shaped connecting frame 6, a movable pulley 7, a pull rope 8, a fixed pulley 9, a second connecting shaft 11, a linkage shaft 13, a guide groove 15, a shifting button 16, a main part 17 and a wing part 18.

Detailed Description

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.

Example 1:

referring to fig. 1 to 7, the present embodiment provides a firing reset mechanism suitable for an intracavity cutting stapler, and specifically, the firing reset mechanism of the present embodiment includes: a pulley component which is suitable for pulling the guide rail 2 is arranged in the inner cavity of the tail shell 1 of the anastomat and is positioned on one side of the guide rail 2, which faces away from the firing push rod 3.

Here, for example, the firing transmission device of the disposable endoluminal cutting stapler disclosed in the publication No. CN102178551B, which is well-known in the prior art, is taken as an example, compared with the firing transmission device of the disposable endoluminal cutting stapler disclosed in the publication No. CN102178551B, the tail housing 1 of the present embodiment has more parts provided with pulley assemblies than the internal space of the tail housing 1 of the publication No. CN102178551B, which is equivalent to adding an extending part to the tail housing 1 of the prior art, that is, for the pulley assembly of the present embodiment, the pulley assembly is arranged on the extending part.

In detail, a pair of strip-shaped through grooves 5 are symmetrically formed in two side walls, which are symmetrical lines, of the tail housing 1 corresponding to the straight line of the guide rail 2 on the side of the U-shaped connecting frame 6 away from the guide rail 2, and the pair of strip-shaped through grooves 5 are distributed along the moving direction parallel to the guide rail 2. The pulley assembly comprises a U-shaped connecting frame 6 fixedly arranged at one end of the guide rail 2, which deviates from the triggering push rod 3, a movable pulley 7 arranged in the U-shaped connecting frame 6 and suitable for driving the U-shaped connecting frame 6 to move, and a fixed pulley 9 arranged in the inner cavity of the tail shell 1 and positioned on one side, which deviates from the guide rail 2, of the U-shaped connecting frame 6, wherein the U-shaped connecting frame 6 can form an integrated structure with the guide rail 2.

Besides, a pull rope 8 is wound between the fixed pulley 9 and the movable pulley 7; one end of the pull rope 8 is fixedly connected with one end of the U-shaped connecting frame 6 far away from the guide rail 2, and the other end of the pull rope 8 is fixedly connected with a movable shaft which simultaneously penetrates through the two side walls of the tail shell 1 and is respectively provided with a strip-shaped notch. That is to say along with the in-process that the loose axle moved along the bar scarce groove, the one end that drives stay cord 8 by the loose axle makes stay cord 8 in the in-process along with the loose axle activity, and movable pulley 7 moves to the direction of fixed pulley 9 to make movable pulley 7 drive U-shaped link 6 and move to the direction of fixed pulley 9.

More specifically, the movable shaft includes a base 17 adapted to move along the inside of the strip-shaped through groove 5, and a pair of wing portions 18 respectively provided at both ends of the base 17 and extending outside both side walls of the tail housing 1 where the strip-shaped through groove 5 is provided; the pair of wings 18 each have an outer diameter greater than the outer diameter of the base 17. That is to say that alar part 18 is located the outside of afterbody casing 1 for the hand can stir alar part 18 and exert the effort, and alar part 18 is receiving the hand to stir the basis of effort, makes this portion 17 can drive the activity of stay cord 8.

In detail, the movable pulley 7 is connected with the U-shaped connecting frame 6 through a first connecting shaft; namely, the first connecting shaft is fixedly arranged in the hollow inner space of the U-shaped connecting frame 6, and the movable pulley 7 is matched and connected with the first connecting shaft. The fixed pulley 9 is connected with the side wall of the tail shell 1 through a second connecting shaft 11; namely, two ends of the second connecting shaft 11 are fixedly connected with the side walls corresponding to the inner cavity of the tail shell 1, and the fixed pulley 9 is connected with the second connecting shaft 11 in a matching mode.

In an alternative embodiment, the outer diameter of the axle of the fixed pulley 9 is larger than the outer diameter of the axle of the movable pulley 7. The design significance lies in that the fixed pulley 9 is used for changing the power direction, the movable pulley 7 achieves the purpose of saving labor, and the movable pulley 7 is arranged in the hollow inner section of the U-shaped connecting frame 6, so that the outer diameter of the wheel shaft of the fixed pulley 9 is designed to be larger, friction between the pull rope 8 and the U-shaped connecting frame 6 in the moving process can be avoided, and the smoothness of the pull rope 8 in the moving process is ensured.

The specific implementation principle of the firing reset mechanism of the embodiment is as follows:

in the initial state of the intracavity cutting anastomat, namely the triggering push rod 3 is not triggered to be pushed out, the movable shaft is positioned at the end part, far away from the guide rail 2, in the strip-shaped through groove 5, namely the distance between the movable pulley 7 and the fixed pulley 9 is the shortest, in the triggering push rod 3 triggering and pushing out process, the movable shaft gradually moves towards the guide rail 2 in the strip-shaped through groove 5, and in the process, the distance between the movable pulley 7 and the fixed pulley 9 is gradually increased through the action of the pull rope 8 due to the movement of the movable shaft. After the osculating is finished, the wing part 18 of the movable shaft is manually held, so that the wing part 18 drives the whole movable shaft to move towards the end part far away from the guide rail 2 along the strip-shaped through groove 5, in the moving process of the movable shaft, the movable shaft drives the pull rope 8 of the pulley 7 assembly to synchronously move, the movement of the pull rope 8 drives the movable pulley 7 to move towards the fixed pulley 9, the distance between the movable pulley 7 and the fixed pulley 9 is gradually reduced, and the triggering push rod 3 is driven to reset. In the process, due to the action of the pulley assembly, the acting force of the hand on the wing part 18 of the movable shaft can be reduced, and the labor-saving effect is achieved.

Example 2:

on the basis of the firing reset mechanism of embodiment 1, the present embodiment provides an intraluminal cutting stapler, comprising: the firing reset mechanism of example 1.

In combination with the intracavity cutting anastomat which is mature and conventionally used in the prior art, the intracavity cutting anastomat of the embodiment also comprises a tail shell 1, a guide rail 2 arranged in the inner cavity of the tail shell 1, a linkage shaft 13 which is connected with the guide rail 2 and is suitable for synchronously moving along with the guide rail 2, and a pair of guide grooves 15 symmetrically arranged on two side walls of the tail shell 1 which take the straight line of the guide rail 2 as a symmetrical line.

The linkage shaft 13 penetrates through the pair of guide grooves 15, and the part of the linkage shaft 13, which penetrates through the guide grooves 15 and extends out of the outer side of the tail shell 1, is fixedly connected with a shifting button 16, and here, the specific matching structure of the linkage shaft 13 and the shifting button 16 and the specific matching structure of the linkage shaft 13 and the guide rail 2 can adopt the conventional technology in the prior art, and the embodiment is not absolutely limited. The linkage shaft 13 is connected with the part of the guide rail 2 close to the U-shaped connecting frame 6 of the percussion reset mechanism. For the endoluminal cutting stapler of the present embodiment, it should be noted that, in an alternative embodiment, the linkage shaft 13 and the toggle button 16 of the present embodiment may no longer be the reset force application point during the reset process of the guide rail 2 and the firing push rod 3, but only the guide function of the guide rail 2 and the firing push rod 3 during the moving process. In an optional embodiment, the linkage shaft 13 and the toggle button 16 of the present embodiment may also be a reset force application point in the reset process of the guide rail 2 and the trigger push rod 3, and the cooperating wing portion 18 drives the integral movable shaft to move along the strip-shaped through groove 5 to the end portion far away from the guide rail 2 to achieve the purpose of saving labor, that is, when the toggle button 16 is applied with a reset force feeling and is hard, the movable shaft is switched to perform a reset force application operation.

It should be noted that, for the intracavity cutting stapler of the present embodiment, the slot length of the strip-shaped through slot 5 is defined by the moving distance of the guide rail 2 together with the firing push rod 3. It should be noted at this time that, when the firing push rod 3 of the intracavity cutting stapler of the present embodiment moves by a distance equal to the length of the guide slot 15 after being fully fired relative to the initial position, the length of the strip-shaped through slot 5 is at least equal to the length of the guide slot 15 or slightly greater than the length of the guide slot 15. That is, the length of the strip-shaped through slot 5 is designed to satisfy the distance required for the firing push rod 3 to move from the initial state to the complete firing.

The above embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above embodiments are only examples of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims (9)

1. The utility model provides a percussion canceling release mechanical system, is applicable to intracavity cutting anastomat which characterized in that includes: and a pulley component which is suitable for pulling the guide rail is arranged in the inner cavity of the tail shell of the anastomat and is positioned on one side of the guide rail, which is far away from the firing push rod.

2. The percussion reset mechanism of claim 1, wherein a pair of strip-shaped through grooves are symmetrically formed on two side walls of the tail housing corresponding to one side of the U-shaped connecting frame away from the guide rail, and the two side walls are symmetrical lines which are the straight line where the guide rail is located;

the pulley assembly comprises a U-shaped connecting frame fixedly arranged at one end of the guide rail, which is far away from the trigger push rod, a movable pulley which is arranged in the U-shaped connecting frame and is suitable for driving the U-shaped connecting frame to move, and a fixed pulley which is arranged in the inner cavity of the tail shell and is positioned at one side of the U-shaped connecting frame, which is far away from the guide rail;

a pull rope is wound between the fixed pulley and the movable pulley; one end of the pull rope is fixedly connected with one end of the U-shaped connecting frame, which is far away from the guide rail, and the other end of the pull rope is fixedly connected with a movable shaft which simultaneously penetrates through the two side walls of the tail shell and is respectively provided with a strip-shaped notch.

3. The firing return mechanism of claim 2 wherein said pair of elongated channels are each disposed along a direction parallel to the direction of travel of said guide rail.

4. The firing reset mechanism of claim 3 wherein the movable shaft includes a base portion adapted to move along the interior of the elongated channel and a pair of wing portions provided at each end of the base portion and extending outwardly of the two side walls of the tail housing in which the elongated channel is provided; wherein

The outer diameters of the wing parts are larger than that of the base part.

5. The firing return mechanism of claim 3 wherein said movable pulley is connected to said U-shaped link by a first connecting shaft; namely, the first connecting shaft is fixedly arranged in the hollow inner space of the U-shaped connecting frame, and the movable pulley is matched and connected with the first connecting shaft.

6. The firing return mechanism of any one of claims 3 or 5 wherein said fixed pulley is connected to a side wall of said tail housing by a second connecting shaft; namely, two ends of the second connecting shaft are fixedly connected with the side wall corresponding to the inner cavity of the tail shell, and the fixed pulley is connected with the second connecting shaft in a matching mode.

7. The firing return mechanism of claim 2 wherein the fixed sheave has an outer diameter of the axle that is greater than an outer diameter of the axle of the movable sheave.

8. An endoluminal cutting stapler, comprising: the firing return mechanism of any one of claims 1 to 7.

9. The endoluminal cutting stapler according to claim 8, further comprising a tail housing, a guide rail disposed in an inner cavity of the tail housing, a linkage shaft connected to the guide rail and adapted to move synchronously with the guide rail, and a pair of guide grooves symmetrically formed on two sidewalls of the tail housing using a straight line where the guide rail is located as a symmetry line;

the linkage shaft penetrates through the pair of guide grooves, and the part of the linkage shaft, which penetrates through the guide grooves and extends out of the outer side of the tail shell, is fixedly connected with a shifting button.

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