CN219895851U - Tissue stripping device of surgical instrument and surgical instrument - Google Patents

Abstract

The utility model relates to a tissue stripping device of a surgical instrument and the surgical instrument, wherein the tissue stripping device comprises a base and a stripping piece, the stripping piece comprises a working end and a fixed end which are connected with each other, the fixed end is detachably connected with the base, and the width of the working end is configured to gradually decrease from one end close to the fixed end to one end far from the fixed end; wherein the stripping member is configured to have magnetism so as to be capable of attracting with the base. The width of the working end of the stripping piece is gradually reduced from the end close to the fixed end to the end far away from the fixed end, so that the working end forms a relatively sharp structure, and the stripping piece is beneficial to stripping tissues, especially finer tissues. The stripping piece is provided with certain magnetism and can be attracted with the base, so that the reliability of the connection between the stripping piece and the base is improved, and the use reliability of the tissue stripping device is ensured.

Description

Tissue stripping device of surgical instrument and surgical instrument

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a tissue stripping device of a surgical instrument and the surgical instrument.

Background

The anastomat is a device used in medicine to replace manual suturing, and the main working principle is to partition or anastomose tissues by using titanium nails, which is similar to a stapler. The anvil and cartridge components of prior art staplers are relatively straight and are not suitable for separating specific tissue during surgery. When the traditional Chinese medicine needs to strip specific tissues in surgical operation, especially finer tissues, the operation is inconvenient and difficult, so that the tissues are not easy to strip, and the risk in the surgical operation process is increased.

Disclosure of Invention

Accordingly, it is desirable to provide a tissue peeling device for a surgical instrument and a surgical instrument, which solve the problem that the tissue peeling structure in the prior art anastomat is not easy to peel off tissues.

A tissue morcellating device of a surgical instrument, the tissue morcellating device comprising:

a base;

a peeling member including a working end and a fixing end connected to each other, the fixing end being detachably connected to the base, the working end having a width configured to gradually decrease from an end near the fixing end to an end far from the fixing end;

wherein the stripper member is configured to be magnetic to be capable of engaging with the base.

In one embodiment, the fixed end is provided with a limiting piece, the base is provided with a limiting hole, the limiting piece can be operably clamped into the limiting hole, and the limiting piece can be mutually limited with the base so as to limit the stripping piece to be separated from the base;

or, the fixed end is provided with a limiting hole, the base is provided with a limiting piece, the limiting piece can be operably clamped into the limiting hole, and the limiting piece and the fixed end can be mutually limited so as to limit the stripping piece to be separated from the base.

In one embodiment, the limiting piece is fixedly connected to the fixed end, the base comprises a limiting surface, and the limiting hole is formed in the limiting surface;

the base is arranged at a position corresponding to the limiting hole and is of a hollow structure so as to limit the accommodating cavity, the limiting hole is communicated with the accommodating cavity, the end part of the limiting piece can enter the accommodating cavity from the limiting hole, and after rotating by a preset angle, the end part of the limiting piece can be abutted to the wall surface of the accommodating cavity.

In one embodiment, the limiting member includes:

the connecting shaft is fixedly connected to the mounting surface of the fixed end;

the limiting protrusion is fixedly connected with the connecting shaft and protrudes along the radial direction of the connecting shaft in a direction away from the connecting shaft;

wherein, spacing protruding can with hold the wall looks butt of cavity.

In one embodiment, the distance between the surface of the limiting protrusion facing the mounting surface and the mounting surface is greater than the wall thickness of the side wall of the accommodating cavity on the side of the limiting surface in the base.

In one embodiment, the fixing end is further provided with a plurality of positioning protrusions at intervals, the limiting surface of the base is provided with a plurality of positioning depressions corresponding to the positioning protrusions, and the positioning protrusions are in concave-convex fit with the positioning depressions.

In one embodiment, the thickness of the working end is configured to decrease gradually from an end closer to the fixed end to an end farther from the fixed end.

In one embodiment, the working end includes a working surface, the working surface is connected with a side surface of the fixed end, which is away from the base, an included angle is formed between the working surface and the side surface of the fixed end, which is connected with the working surface, and one end of the working end, which is away from the fixed end, extends in a direction away from the base.

In one embodiment, the thickness of the fixed end is configured to gradually decrease from an end closer to the working end to an end farther from the working end.

A surgical instrument comprising a tissue stripping device as described above, the surgical instrument further comprising a cartridge component to which the base is pivotally connected.

The utility model has the beneficial effects that:

the present utility model provides a tissue morcellating device for a surgical instrument, a base for supporting and attaching a morcellating element while simultaneously effecting morcellating of the assembly in cooperation with a cartridge component in the surgical instrument. The stripping piece is used for stripping tissues, wherein a fixed end in the stripping piece is used for being detachably connected with the base so as to fix the stripping piece on the base; the width of the working end of the stripping piece is gradually reduced from the end close to the fixed end to the end far away from the fixed end, so that the working end forms a relatively sharp structure, and the stripping piece is beneficial to stripping tissues, especially finer tissues. The stripping piece is provided with certain magnetism and can be attracted with the base, so that the reliability of the connection between the stripping piece and the base is improved, and the use reliability of the tissue stripping device is ensured.

Drawings

FIG. 1 is a schematic view of a portion of a surgical instrument according to one embodiment of the present utility model;

FIG. 2 is an exploded view of a tissue stripping assembly according to one embodiment of the present utility model;

FIG. 3 is a schematic view of a stripper member in a tissue stripping assembly according to one embodiment of the present utility model;

FIG. 4 is a schematic view of a base in a tissue stripping assembly according to one embodiment of the present utility model;

FIG. 5 is a schematic illustration of a stripper member and base assembly process in a tissue stripping assembly according to one embodiment of the present utility model;

FIG. 6 is a schematic illustration of another construction of a stripper member and base assembly process in a tissue stripping assembly according to one embodiment of the present utility model;

FIG. 7 is a schematic view of a tissue stripping assembly according to one embodiment of the present utility model after a stripper member is mounted to a base;

FIG. 8 is a schematic cross-sectional view of a tissue stripping assembly according to one embodiment of the present utility model after a stripper member is mounted to a base.

Reference numerals:

a surgical instrument 10;

tissue peeling device 100; a base 110; a limit surface 111, a limit hole 1111; positioning recess 1112; a receiving cavity 112; a stripper 120; a working end 121; a working surface 1211; a fixed end 122; a mounting surface 1221; a stopper 1222; a connection shaft 1222a; a limit projection 1222b; positioning projections 1223;

cartridge component 200.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 2-8, one embodiment of the present utility model provides a tissue stripping apparatus 100 of a surgical instrument 10, the tissue stripping apparatus 100 comprising a base 110 and a stripping member 120, the stripping member 120 comprising a working end 121 and a fixed end 122 connected to each other, the fixed end 122 being detachably connected to the base 110, the width of the working end 121 being configured to gradually decrease from an end near the fixed end 122 to an end far from the fixed end 122; wherein the peeling member 120 is configured to have magnetism so as to be capable of being attracted to the base 110.

In accordance with an embodiment of the present utility model, a tissue morcellating device 100 of a surgical instrument 10 is provided with a base 110 for supporting and attaching a morcellating element 120 while simultaneously effecting morcellating of the assembly in cooperation with a cartridge component 200 in the surgical instrument 10. The stripper member 120 is used for stripping tissue, wherein a fixed end 122 of the stripper member 120 is used for being detachably connected with the base 110 to fix the stripper member 120 on the base 110; the width of the working end 121 of the stripper member 120 is gradually reduced from the end near the fixed end 122 to the end far from the fixed end 122, so that the working end 121 forms a relatively sharp structure to facilitate easier stripping of tissues, particularly finer tissues. The stripper member 120 is configured to have a certain magnetic property and to be capable of being attracted to the base 110, so as to improve the reliability of the connection between the stripper member 120 and the base 110, thereby ensuring the reliability of the use of the tissue stripping device 100.

For the detachable connection mode of the stripping member 120 and the base 110, in one embodiment, the fixing end 122 is configured with a limiting member 1222, the base 110 is configured with a limiting hole 1111, the limiting member 1222 can be operably clamped into the limiting hole 1111, and the limiting member 1222 and the base 110 can be mutually limited to limit the stripping member 120 from being separated from the base 110; alternatively, the fixed end 122 is configured with a limiting hole 1111, the base 110 is configured with a limiting member 1222, the limiting member 1222 can be operatively clamped into the limiting hole 1111, and the limiting member 1222 and the fixed end 122 can be mutually limited to limit the stripping member 120 from being separated from the base 110. The detachable connection of the stripper 120 and the base 110 is realized through the mutual cooperation of the limiting piece 1222 and the limiting hole 1111, and the structure is simple and the disassembly and the assembly are easy. Specifically, the limiting member 1222 may be disposed at the fixed end 122 of the peeling member 120, and may be disposed on the base 110; accordingly, the limiting member 1222 is matched with the limiting hole 1111 to realize the mutual limiting, and then the limiting hole 1111 is disposed on a different component from the limiting member 1222. The specific structural forms of the stopper 1222 and the stopper hole 1111 are not limited, and in particular, the specific structure of the stopper hole 1111 may be adaptively set according to the actual space of the component. For example, in some embodiments, the limiting hole 1111 may be configured as a "one" shaped slot, and the slot wall of the slot may be provided with a receiving slot in communication with the "one" shaped slot, and the limiting member 1222 may have a general shape corresponding to the "one" shaped slot. When the stripper 120 needs to be mounted on the base 110, the extending direction of the limiter 1222 is consistent with the slot in the shape of a straight line, the limiter 1222 can enter the slot in the shape of a straight line, and when the limiter 1222 is aligned with the accommodating slot, the limiter 1222 can be clamped into the accommodating slot by rotating the limiter 1222, and at this time, the slot wall of the accommodating slot can limit the movement of the limiter 1222, so that the stripper 120 can be detachably connected with the base 110.

In the present utility model, specifically, as shown in fig. 3 to 8, a limiting member 1222 is fixedly connected to a fixed end 122, a base 110 includes a limiting surface 111, and a limiting hole 1111 is formed on the limiting surface 111; the base 110 is configured as a hollow structure at a position corresponding to the limiting hole 1111 to define the accommodating cavity 112, the limiting hole 1111 is communicated with the accommodating cavity 112, an end of the limiting piece 1222 can enter the accommodating cavity 112 from the limiting hole 1111, and after rotating by a preset angle, the end of the limiting piece 1222 can be abutted against a wall surface of the accommodating cavity 112. In the present embodiment, since the stripper 120 itself is small in structure, the stopper 1222 is provided on the stripper 120 for easy processing. The corresponding part of the limiting hole 1111 on the base 110 is hollow, so that the structure of the base 110 for matching with the limiting piece 1222 and limiting is simpler and is convenient for processing. That is, only a limiting hole 1111 communicated with the accommodating cavity 112 on the base 110 is formed on the base 110, so that the mutual limitation of the limiting piece 1222 and the base 110 can be realized, the integral structure of the limiting structure is simplified, and meanwhile, the processing of the limiting structure is facilitated for the small-sized structure of the base 110. More specifically, in the present embodiment, the limiting hole 1111 is a straight hole.

In one embodiment, as shown in fig. 3, 4 and 8, the limiting member 1222 includes a connecting shaft 1222a and at least one limiting protrusion 1222b, wherein the connecting shaft 1222a is fixedly connected to the mounting surface 1221 of the fixed end 122; the limit protrusion 1222b is fixedly connected to the connection shaft 1222a, and the limit protrusion 1222b protrudes in a direction away from the connection shaft 1222a along a radial direction of the connection shaft 1222a to form a T-like structure; wherein, the limit protrusion 1222b can abut against the wall surface of the accommodating cavity 112. Wherein the connection shaft 1222a is used for being fixed with the mounting surface 1221 in the stripper member 120, thereby achieving a fixed connection with the stripper member 120. The limiting protrusion 1222b is fixedly connected to the connecting shaft 1222a, so that the limiting member 1222 and the base 110 are limited mutually by the abutting of the limiting protrusion 1222b and the wall surface of the accommodating cavity 112 on the base 110, and the stripping member 120 and the base 110 are detachably connected. Specifically, the connection shaft 1222a and the limit protrusion 1222b may be integrally formed, and the limit protrusion 1222b may be welded on the connection shaft 1222 a. The connection shaft 1222a and the stripper 120 may be fixedly connected by screw threads, or the connection shaft 1222a may be welded to the stripper 120.

As shown in fig. 8, in one embodiment, the distance between the surface of the limit projection 1222b facing the mounting surface 1221 and the mounting surface 1221 is greater than the wall thickness of the sidewall of the housing cavity 112 on the side of the limit surface 111. So configured, after the stopper 1222 enters the accommodating space on the base 110 from the stopper hole 1111, it can also move along the axial direction of the connecting shaft 1222a relative to the base 110, so that the machining accuracy of the stopper 1222 can be reduced; in addition, it is also convenient to provide an operation space for the cooperation of the positioning boss 1223 and the positioning recess 1112 hereinafter.

In one embodiment, as shown in fig. 3, 4 and 8, the fixed end 122 is further configured with a plurality of positioning protrusions 1223 spaced apart from each other, and the limiting surface 111 of the base 110 is provided with a plurality of positioning recesses 1112 corresponding to the positioning protrusions 1223, where the positioning protrusions 1223 are in concave-convex fit with the positioning recesses 1112. By providing the positioning protrusions 1223 and the positioning recesses 1112 on the stripper member 120 and the base 110, respectively, the mutual limitation of the stripper member 120 and the base 110 is achieved in the form of the mutual concave-convex fit of the positioning protrusions 1223 and the positioning recesses 1112, so that the stripper member 120 cannot rotate relative to the base 110 after the positioning protrusions 1223 are clamped into the positioning recesses 1112, thereby improving the reliability of the operation of the tissue stripping device 100.

As shown in fig. 5 to 8, in one of the embodiments, the thickness of the working end 121 is configured to gradually decrease from an end near the fixed end 122 to an end far from the fixed end 122. This arrangement allows the end of working end 121 distal to fixed end 122 to be sharper, thereby facilitating tissue dissection.

As shown in fig. 2 and 7, in one embodiment, the working end 121 includes a working surface 1211, the working surface 1211 is connected to a side of the fixed end 122 facing away from the base 110, an included angle is formed between the working surface 1211 and the connected side of the fixed end 122, and an end of the working end 121 away from the fixed end 122 extends in a direction away from the base 110, so that the working end 121 and the fixed end 122 have a V-shaped structure. The arrangement is such that the working end 121 is tilted in a direction away from the base 110, so that when tissue is clamped by the stripper member 120 and the cartridge component 200 after the stripper member 120 strips the tissue, the working end 121 tilted in a direction away from the base 110 can block the tissue, thereby preventing the tissue from slipping.

In one of the embodiments, as shown in fig. 2 and 7, the thickness of the fixed end 122 is configured to gradually decrease from an end closer to the working end 121 to an end farther from the working end 121. The arrangement is such that the fixed end 122 can be matched to the thickness of the base 110 such that, after the fixed end 122 is mounted to the base 110, the total thickness of the fixed end 122 and the base 110 is substantially the same in the extending direction of the base 110.

As shown in FIG. 1, a surgical instrument 10, the surgical instrument 10 including a tissue-stripping device 100 as described above, the surgical instrument 10 further including a cartridge component 200, the base 110 being pivotally connected to the cartridge component 200. The stripping of tissue is accomplished by pivotally connecting base 110 to cartridge component 200 such that stripper member 120, base 110 and cartridge component 200 cooperate with one another.

The disassembly and assembly principle of the tissue stripping device provided by the utility model is as follows:

when the stripping member 120 is required to be mounted on the base 110, the limiting member 1222 on the stripping member 120 is inserted into the limiting hole 1111 on the base 110, then the stripping member 120 is rotated 90 degrees, the glass member is attracted to the base 110 under the magnetic action of the stripping member 120, and the positioning protrusion 1223 on the glass member is clamped into the limiting recess on the base 110, so that the assembly of the glass member and the base 110 is completed.

When the stripper 120 needs to be removed from the base 110, the stripper 120 is lifted away from the base 110, the magnetic attraction between the stripper 120 and the base 110 is overcome, the positioning protrusions 1223 on the stripper 120 are separated from the positioning recesses 1112, and then the stripper 120 is rotated by 90 degrees, and when the stopper 1222 is aligned with the stopper hole 1111, the stopper 1222 is pulled out from the stopper hole 1111, so that the stripper 120 and the base 110 are removed.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A tissue morcellating device of a surgical instrument, the tissue morcellating device comprising:

a base;

a peeling member including a working end and a fixing end connected to each other, the fixing end being detachably connected to the base, the working end having a width configured to gradually decrease from an end near the fixing end to an end far from the fixing end;

wherein the stripper member is configured to be magnetic to be capable of engaging with the base.

2. The tissue morcellating device of claim 1, wherein the fixed end has a stop configured thereon and the base has a stop aperture configured thereon, the stop being operably engageable within the stop aperture, the stop being configured to limit interaction with the base to limit removal of the morcellating device from the base;

or, the fixed end is provided with a limiting hole, the base is provided with a limiting piece, the limiting piece can be operably clamped into the limiting hole, and the limiting piece and the fixed end can be mutually limited so as to limit the stripping piece to be separated from the base.

3. The tissue morel device of a surgical instrument of claim 2, wherein the stop is fixedly connected to the fixed end, the base includes a stop surface, the stop aperture opening on the stop surface;

the base is arranged at a position corresponding to the limiting hole and is of a hollow structure so as to limit the accommodating cavity, the limiting hole is communicated with the accommodating cavity, the end part of the limiting piece can enter the accommodating cavity from the limiting hole, and after rotating by a preset angle, the end part of the limiting piece can be abutted to the wall surface of the accommodating cavity.

4. The tissue morcellating device of claim 3, wherein the stop comprises:

the connecting shaft is fixedly connected to the mounting surface of the fixed end;

the limiting protrusion is fixedly connected with the connecting shaft and protrudes along the radial direction of the connecting shaft in a direction away from the connecting shaft;

wherein, spacing protruding can with hold the wall looks butt of cavity.

5. The tissue moreeling device of a surgical instrument of claim 4, wherein a distance between a face of the stop projection facing the mounting face and the mounting face is greater than a wall thickness of a sidewall of the base on a side of the stop face in the receiving cavity.

6. The tissue moral device of claim 3, wherein the fixed end is further configured with a plurality of spaced apart positioning projections, and wherein the stop surface of the base is provided with a plurality of positioning recesses corresponding to the positioning projections, the positioning projections being in a male-female engagement with the positioning recesses.

7. The tissue morcellating device of any one of claims 1-6, wherein the working end is configured to taper in thickness from an end proximal to the fixed end to an end distal from the fixed end.

8. The tissue morcellating device of claim 7, wherein the working end includes a working surface that is contiguous with a side of the fixed end facing away from the base, the working surface forming an angle with the contiguous side of the fixed end, and wherein an end of the working end that is distal from the fixed end extends in a direction away from the base.

9. The tissue morcellating device of any one of claims 1-6, wherein the thickness of the fixed end is configured to taper from an end proximal to the working end to an end distal from the working end.

10. A surgical instrument comprising the tissue stripping device as recited in any one of claims 1-9, further comprising a cartridge component to which the base is pivotally connected.