CN117694945A

CN117694945A - Surgical instrument

Info

Publication number: CN117694945A
Application number: CN202410161012.6A
Authority: CN
Inventors: 吴香璐; 刘华
Original assignee: Hisguard Suzhou Biomedical Technology Co ltd
Current assignee: Hisguard Suzhou Biomedical Technology Co ltd
Priority date: 2024-02-05
Filing date: 2024-02-05
Publication date: 2024-03-15

Abstract

The application discloses a surgical instrument including a handle assembly and a head assembly. The handle assembly comprises a first main body part and a boss protruding from one side of the first main body part, and the head assembly comprises a second main body part and at least one clamping part. The boss has first recess and the second recess that the interval set up, and joint portion includes the elastic arm and is located the first arch of elastic arm, and the bellied size of first and the size adaptation of first recess and second recess, and first recess runs through the boss setting along the axial. The second groove limits the first protrusion so that the head assembly and the handle assembly can be stably connected, and normal use of the surgical instrument is guaranteed. The distance between second slip table and the boss axis increases gradually, rotates the head subassembly for first arch is slided to the second slip table by the second recess, and the second slip table that the size becomes gradually big can make the deformation of elastic arm increase gradually until elastic arm takes place plastic deformation, realizes the self-destruction of head subassembly.

Description

Surgical instrument

Technical Field

The application relates to the technical field of medical treatment, in particular to a surgical instrument.

Background

Auxiliary instruments used in ophthalmology, such as foreign body forceps, separating scissors and the like, are generally very small in action part, a head component of a surgical instrument is an action part, part of the surgical instrument can extend into the eye, a handle component of the surgical instrument is an operation part, and the surgical instrument can be generally divided into the head component and the handle component which are detachable or integrated.

The head assembly of the detachable surgical instrument is reusable or disposable and the handle is reusable. The detachable advantage is: the disposable head is convenient to clean and replace, and has the advantages of sanitation and low cost. Because the secondary use of the head assembly is prone to secondary infections, there is a need for a surgical instrument that self-destructs when the head assembly is removed.

Disclosure of Invention

The embodiment of the application provides a surgical instrument, and aims to provide a surgical instrument which can be self-destroyed when a head assembly is taken down.

Embodiments of a first aspect of the present application provide a surgical instrument comprising; the handle assembly comprises a first main body part and a boss protruding from one side of the first main body part, the boss is provided with a first groove and a second groove which are arranged at intervals, the first groove axially penetrates through the boss, a first sliding table is arranged between the first groove and the second groove, a second sliding table is arranged on one side, away from the first sliding table, of the second groove, and the distance between the second sliding table and the boss axis is gradually increased in the direction, away from the first sliding table, of the second groove; the head assembly comprises a second main body part and at least one clamping part, wherein the clamping part extends out of the second main body part and comprises an elastic arm and a first protrusion arranged on the elastic arm, and the size of the first protrusion is matched with the size of the first groove and the size of the second groove, so that the first protrusion can slide into the first groove and slide into the second groove through the first sliding table.

According to an embodiment of the first aspect of the present application, the boss comprises a first boss and a second boss, the first boss is located between the second boss and the first main body portion, the first groove axially penetrates through the first boss and the second boss along the boss, and the second groove, the first sliding table and the second sliding table are all arranged on the first boss.

According to any of the foregoing embodiments of the first aspect of the present application, the second boss is provided radially protruding from the second groove and/or the first slide table.

According to any one of the foregoing embodiments of the first aspect of the present application, a side of the first body portion, which is close to the first boss, radially protrudes from the second groove and/or the first sliding table.

According to any of the foregoing embodiments of the first aspect of the present application, the distance between the first slide table and the boss axis gradually increases in a direction from the first groove toward the second groove.

According to any of the foregoing embodiments of the first aspect of the present application, a maximum distance between the second slide table and the boss axis is greater than a maximum distance between the first slide table and the boss axis.

According to any one of the foregoing embodiments of the first aspect of the present application, a surface outer edge of the second boss away from the first body portion is provided with a second protrusion, a surface outer edge of the second boss close to the second body portion is provided with a third groove, and a maximum dimension of the second protrusion in a boss radial direction is greater than or equal to a maximum dimension of the third groove in the boss radial direction.

According to any of the preceding embodiments of the first aspect of the present application, the second protrusion is located between the first groove and the third groove.

According to any one of the embodiments described above in the first aspect of the present application, a sliding groove is provided on a side of an inner wall surface of the second body portion, which is close to the clamping portion, so that the second protrusion can slide in the sliding groove, and one end of the sliding groove is connected to a surface of the second body portion, which is close to the clamping portion.

According to any one of the foregoing embodiments of the first aspect of the present application, the plurality of clamping portions are distributed at intervals, and the number of the clamping portions is the same as that of the first groove, the second groove, the first sliding table and the second sliding table.

According to an embodiment of the present application, a surgical instrument includes a handle assembly and a head assembly. The handle assembly comprises a first main body part and a boss protruding from one side of the first main body part, the head assembly comprises a second main body part and at least one clamping part, and the first main body part of the handle assembly and the second main body part of the head assembly are mutually connected through detachable connection of the boss and the head assembly. The boss has first recess and the second recess that the interval set up, and joint portion includes the elastic arm and is located the first arch of elastic arm, and the bellied size of first and the size adaptation of first recess and second recess, and first recess runs through the boss setting along the axial to make the first arch of elastic arm can slide into in the first recess. And the first protrusion can slide into the second groove from the first groove through the first sliding table, and the second groove limits the first protrusion, so that the head assembly and the handle assembly can be stably connected, and the normal use of the surgical instrument is ensured. The distance between second slip table and the boss axis increases gradually, after surgical instruments use, rotate the head subassembly for first arch is slided to the second slip table by the second recess, and the second slip table of size grow gradually can make the deformation of elastic arm increase gradually until elastic arm takes place plastic deformation, and the elastic arm is crooked promptly, is difficult to restore to the throne, thereby takes off the head subassembly on the handle subassembly, and can't continue to use because elastic arm warp the back, in order to realize the self-destruction of head subassembly.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings, in which like or similar reference characters designate the same or similar features, and which are not to scale.

FIG. 1 is a schematic view of a surgical instrument according to an embodiment of the present application;

FIG. 2 is an exploded view of the surgical instrument of FIG. 1;

FIG. 3 is a partial side view of a surgical instrument provided in an embodiment of the present application;

FIG. 4 is a partial front view of a surgical instrument provided in an embodiment of the present application;

FIG. 5 is a cross-sectional view of A-A of FIG. 4;

FIG. 6 is an exploded view of another embodiment of a surgical instrument;

FIG. 7 is a partial side view of another embodiment of a surgical instrument;

FIG. 8 is a partial front view of another embodiment of a surgical instrument;

fig. 9 is a partial side view of a surgical instrument in yet another embodiment.

Reference numerals illustrate:

10. a surgical instrument;

100. a handle assembly; 110. a first body portion; 120. a boss; 121. a first groove; 122. a second groove; 123. a first sliding table; 124. a second sliding table; 130. a first boss; 140. a second boss; 141. a second protrusion; 142. a third groove;

200. a head assembly; 210. a second body portion; 211. a chute; 220. A clamping part; 221. an elastic arm; 222. a first protrusion.

Detailed Description

Features and exemplary embodiments of various aspects of the present application are described in detail below to make the objects, technical solutions and advantages of the present application more apparent, and to further describe the present application in conjunction with the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to explain the present application and are not configured to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by showing examples of the present application.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

It will be understood that when a layer, an area, or a structure is described as being "on" or "over" another layer, another area, it can be referred to as being directly on the other layer, another area, or another layer or area can be included between the layer and the other layer, another area. And if the component is turned over, that layer, one region, will be "under" or "beneath" the other layer, another region.

Embodiments of the present application provide a surgical instrument, and various embodiments of the surgical instrument will be described below with reference to the accompanying drawings.

Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a surgical instrument according to an embodiment of the present application; FIG. 2 is an exploded view of the surgical instrument of FIG. 1; FIG. 3 is a partial side view of a surgical instrument provided in an embodiment of the present application; FIG. 4 is a partial front view of a surgical instrument provided in an embodiment of the present application; fig. 5 is a cross-sectional view of A-A in fig. 4.

As shown in fig. 1-5, a surgical instrument 10 is provided in accordance with a first aspect of the present application, comprising; the handle assembly 100 comprises a first main body part 110 and a boss 120 protruding from one side of the first main body part 110, wherein the boss 120 is provided with a first groove 121 and a second groove 122 which are arranged at intervals, the first groove 121 axially penetrates through the boss 120 and is provided with a first sliding table 123 between the second groove 122, one side of the second groove 122 away from the first sliding table 123 is provided with a second sliding table 124, and the distance between the second sliding table 124 and the axis of the boss 120 is gradually increased in the direction of the second groove 122 away from the first sliding table 123; the head assembly 200 includes a second body portion 210 and at least one clamping portion 220, the clamping portion 220 extending from the second body portion 210 and including a resilient arm 221 and a first protrusion 222 located on the resilient arm 221, the first protrusion 222 being sized to fit the first recess 121 and the second recess 122 such that the first protrusion 222 is capable of sliding into the first recess 121 and into the second recess 122 via the first sliding table 123.

According to the surgical instrument 10 of the present embodiment, the surgical instrument 10 includes a handle assembly 100 and a head assembly 200. The handle assembly 100 includes a first body portion 110 and a boss 120 protruding from one side of the first body portion 110, and the head assembly 200 includes a second body portion 210 and at least one catching portion 220, and the first body portion 110 of the handle assembly 100 and the second body portion 210 of the head assembly 200 are coupled to each other by the detachable connection of the boss 120 to the head assembly 200. The boss 120 has a first groove 121 and a second groove 122 that are disposed at intervals, the clamping portion 220 includes an elastic arm 221 and a first protrusion 222 located on the elastic arm 221, and the size of the first protrusion 222 is adapted to the size of the first groove 121 and the second groove 122, and the first groove 121 is disposed through the boss 120 along the axial direction, so that the first protrusion 222 of the elastic arm 221 can slide into the first groove 121. And the first protrusion 222 can slide into the second groove 122 from the first groove 121 via the first sliding table 123, and the second groove 122 limits the first protrusion 222, so that the head assembly 200 and the handle assembly 100 can be stably connected, thereby ensuring the normal use of the surgical instrument 10. When the surgical instrument 10 is used, the head assembly 200 is rotated, so that the first protrusion 222 slides from the second groove 122 to the second sliding table 124, the second sliding table 124 with gradually increased size can gradually increase the deformation of the elastic arm 221 until the elastic arm 221 is plastically deformed, that is, the elastic arm 221 is bent, and the head assembly 200 is difficult to restore and reset, so that the head assembly 200 is taken down on the handle assembly 100, and the head assembly 200 cannot be continuously used after the elastic arm 221 is deformed, so that the self-destruction of the head assembly 200 is realized. The first body portion 110 of the handle assembly 100 is a hand-held portion and the second body portion 210 of the head assembly 200 is used to attach auxiliary instruments such as forceps, scissors, etc.

As shown in fig. 2 to 4, in some alternative embodiments, the boss 120 includes a first boss 130 and a second boss 140, the first boss 130 is located between the second boss 140 and the first body portion 110, the first groove 121 is disposed through the first boss 130 and the second boss 140 along the axial direction of the boss 120, and the second groove 122, the first sliding table 123, and the second sliding table 124 are all disposed on the first boss 130.

In these alternative embodiments, the boss 120 is divided into two sections, a first boss 130 and a second boss 140, with the first boss 130 being located between the second boss 140 and the first body portion 110. The first groove 121 penetrates the first boss 130 and the second boss 140 in the axial direction so that the first protrusion 222 of the elastic arm 221 can slide into the first groove 121 and reach the first boss 130 through the second boss 140. Because the second groove 122, the first sliding table 123 and the second sliding table 124 are all disposed on the first boss 130, when the first protrusion 222 reaches the portion of the first groove 121 located on the first boss 130, the head assembly 200 is rotated, so that the first protrusion 222 can slide into the second groove 122 via the first sliding table 123, and the second groove 122 limits the first protrusion 222, so that the head assembly 200 and the handle assembly 100 can be stably connected, thereby ensuring normal use of the surgical instrument 10. After the surgical instrument 10 is used, the head assembly 200 is turned, so that the first protrusion 222 slides from the second groove 122 to the second sliding table 124, and the second sliding table 124 with gradually increased size can gradually increase the deformation of the elastic arm 221 until the elastic arm 221 is plastically deformed, that is, the elastic arm 221 is bent, so that the elastic arm 221 is difficult to restore to the original position, and the head assembly 200 is removed from the handle assembly 100, and the head assembly 200 cannot be used continuously after being deformed, so as to realize self-destruction of the head assembly 200.

In some alternative embodiments, the second boss 140 is disposed radially protruding from the second groove 122 and/or the first slide table 123.

In these alternative embodiments, the second boss 140 protrudes radially from the second recess 122, and when the first boss 222 slides into the second recess 122 from the first recess 121, the surface of the second boss 140 adjacent to the second recess 122 can limit the first boss 222, so that the first boss 222 is limited by the first boss 130 in the axial direction, and is stably located in the second recess 122, thereby improving the connection stability of the head assembly 200 and the handle assembly 100. The second boss 140 protrudes out of the first sliding table 123 along the radial direction, when the first boss 222 slides into the first sliding table 123, the surface, close to the first sliding table 123, of the second boss 140 can limit the first boss 222, so that the first boss 222 is limited by the second boss 140 in the axial direction, the first boss 222 is prevented from sliding out of the first sliding table 123, and the first boss 222 can stably slide into the second groove 122 through the first sliding table 123.

In some alternative embodiments, a side of the first body portion 110 adjacent to the first boss 130 radially protrudes from the second groove 122 and/or the first sliding table 123.

In these alternative embodiments, the first body portion 110 protrudes radially beyond the second recess 122, and when the first protrusion 222 slides into the second recess 122 from the first recess 121, the surface of the first body portion 110 adjacent to the second recess 122 can limit the first protrusion 222, so that the first protrusion 222 is limited by the first body portion 110 in the axial direction and stably locates in the second recess 122, thereby improving the connection stability of the head assembly 200 and the handle assembly 100. The first main part 110 radially protrudes the first slip table 123 and is arranged, when the first protrusion 222 slides into the first slip table 123, the surface of the first main part 110, which is close to the first slip table 123, can limit the first protrusion 222, so that the first protrusion 222 is limited by the first main part 110 in the axial direction, the protrusion is prevented from sliding on the first slip table 123, and the first protrusion 222 can stably slide into the second groove 122 through the first slip table 123.

Optionally, the second boss 140 and the first body portion 110 are simultaneously protruding from the second groove 122 along a radial direction, so that both sides of the first protrusion 222 in the axial direction after entering the second groove 122 are limited, and stability of the first protrusion 222 in the second groove 122 is further improved.

Optionally, the second boss 140 and the first main body 110 are simultaneously arranged along the first sliding table 123 that radially protrudes, so that both sides of the first boss 222 along the axial direction after entering the first sliding table 123 are limited, and the sliding stability of the first boss 222 on the first sliding table 123 is further improved.

Optionally, the second boss 140 and/or the first main body 110 are protruding from the second sliding table 124 along the radial direction, so that at least one side of the first boss 222 in the axial direction is limited after the first boss 222 enters the second sliding table 124, so that the sliding stability of the first boss 222 on the second sliding table 124 is improved, the first boss 222 is prevented from sliding on the second sliding table 124, and the elastic arm 221 can be plastically deformed after the first boss 222 slides to the second sliding table 124.

In some alternative embodiments, the distance between the first sliding table 123 and the axis of the boss 120 gradually increases in a direction from the first groove 121 toward the second groove 122.

In these alternative embodiments, the distance between the first sliding table 123 and the axis of the boss 120 is smaller on the side closer to the first groove 121, and the first protrusion 222 can slide onto the first sliding table 123 more easily after entering the first groove 121, so as to slide into the second groove 122 via the first sliding table 123. The distance between the first sliding table 123 and the axis of the boss 120 is larger at the side close to the second groove 122, so that the side of the first sliding table 123 close to the second groove 122 protrudes out of the second groove 122 along the radial direction, and the side of the first sliding table 123 close to the second groove 122 can block the first protrusion 222 from sliding from the second groove 122 towards the first groove 121, so that the first protrusion 222 can only move along the same direction, and the assembling operation of the surgical instrument 10 is simplified.

Optionally, a chamfer is formed on one side of the first protrusion 222, and when the first protrusion 222 is located in the first groove 121, the chamfer of the first protrusion 222 faces the first sliding table 123, so that the first protrusion 222 slides into the first sliding table 123. When the first protrusion 222 is located in the second groove 122, the chamfer of the first protrusion 222 faces the second sliding table 124, so that the first protrusion 222 slides into the second sliding table 124.

In some alternative embodiments, the maximum distance between the second slide 124 and the boss 120 axis is greater than the maximum distance between the first slide 123 and the boss 120 axis.

In these alternative embodiments, the maximum distance between the second sliding table 124 and the axis of the boss 120 is greater than the maximum distance between the first sliding table 123 and the axis of the boss 120, i.e., the deformation amounts of the elastic arms 221 are different when the first protrusions 222 are located on the first sliding table 123 and the second sliding table 124. When the first protrusion 222 is located at the maximum distance between the first sliding table 123 and the axis of the boss 120, the deformation amount of the elastic arm 221 is smaller, and when the first protrusion 222 is located at the maximum distance between the second sliding table 124 and the axis of the boss 120, the deformation amount of the elastic arm 221 is larger, so that after the surgical instrument 10 is used, the head assembly 200 is rotated, the first protrusion 222 slides from the second groove 122 to the second sliding table 124, the second sliding table 124 with gradually increased size can enable the deformation of the elastic arm 221 to gradually increase until the elastic arm 221 is plastically deformed, that is, the elastic arm 221 is broken, so that the head assembly 200 is removed from the handle assembly 100, and self-destruction of the head assembly 200 is realized. Since the maximum distance between the second slide table 124 and the boss 120 axis is greater than the maximum distance between the first slide table 123 and the boss 120 axis, in order to allow the second boss 140 to be provided to protrude radially beyond the second slide table 124, the distance between the portion of the second boss 140 close to the second slide table 124 and the boss 120 axis increases.

Referring to fig. 6-8, fig. 6 is an exploded view of another embodiment of a surgical instrument; FIG. 7 is a partial side view of another embodiment of a surgical instrument; fig. 8 is a partial front view of another embodiment of a surgical instrument.

As shown in fig. 6 to 8, in some alternative embodiments, the second boss 140 is provided with a second protrusion 141 away from the surface outer edge of the first body part 110, the second boss 140 is provided with a third groove 142 near the surface outer edge of the second body part 210, and the largest dimension of the second protrusion 141 in the radial direction of the boss 120 is greater than or equal to the largest dimension of the third groove 142 in the radial direction of the boss 120.

In these alternative embodiments, after the first protrusion 222 slides into the second groove 122, the second protrusion 141 exists between the second body 210 of the head assembly 200 and the second boss 140 of the handle assembly 100, the second protrusion 141 lifts the second body 210 a certain distance, and after the first protrusion 222 slides into the second groove 122, the first protrusion 222 can move into the third groove 142 on one side of the second boss 140 near the second groove 122 due to the second protrusion 141 lifting the second body 210 a certain distance, and further limit the first protrusion 222, and since the second protrusion 141 lifts the second body 210, the first protrusion 222 can be stably located in the third groove 142, so that the connection stability of the head assembly 200 and the handle assembly 100 is improved. Next, after the first protrusion 222 slides into the second groove 122, the second protrusion 141 lifts the second body 210, and the first protrusion 222 reaches the second groove 122 and can slide into the third groove 142. The first protrusion 222 slides into the third groove 142, so that the hand feeling of sliding the first protrusion 222 into the third groove 142 can be clearly perceived, and the hand feeling position reminding function is provided. The maximum dimension of the second protrusion 141 along the radial direction of the boss 120 is greater than the maximum dimension of the third groove 142 along the radial direction of the boss 120, and when the second protrusion 141 incompletely lifts the second body portion 210, that is, a part of the second protrusion 141 is located in the second body portion 210, the first protrusion 222 can slide into the third groove 142. The maximum dimension of the second protrusion 141 along the radial direction of the boss 120 is equal to the maximum dimension of the third groove 142 along the radial direction of the boss 120, when the second protrusion 141 fully lifts the second body portion 210, that is, the second protrusion 141 is fully located between the second body portion 210 and the first body portion 110 and is fully exposed by the gap between the second body portion 210 and the first body portion 110, the first protrusion 222 is fully slid into the third groove 142 and is abutted by the third groove 142.

Optionally, the outer contour of the first protrusion 222 is fitted with the contour of the third groove 142, so that the first protrusion 222 can better abut against the third groove 142, and stability of the first protrusion 222 in the third groove 142 is improved.

In some alternative embodiments, the second protrusion 141 is located between the first groove 121 and the third groove 142.

In these alternative embodiments, the second protrusion 141 is located between the first groove 121 and the third groove 142, that is, the second protrusion 141 is disposed close to the elastic arm 221, and the second protrusion 141 gradually lifts the second body portion 210 during the sliding of the first protrusion 222 from the first groove 121 into the second groove 122, and since the second protrusion 141 is disposed close to the elastic arm 221, the elastic arm 221 can undergo more deformation, and a gap is more easily formed between a portion of the second body portion 210 close to the elastic arm 221 and the second boss 140, so that the gap between the second body portion 210 and the second boss 140 is relatively uniform at various positions.

Referring to fig. 9, fig. 9 is a partial side view of a surgical instrument according to yet another embodiment.

As shown in fig. 9, in some alternative embodiments, a sliding groove 211 is provided on a side of an inner wall surface of the second body portion 210 near the clamping portion 220, so that the second protrusion 141 can slide in the sliding groove 211, and one end of the sliding groove 211 is connected to a surface of the second body portion 210 near the clamping portion 220.

In these alternative embodiments, the inner wall surface of the second body 210 is provided with a sliding groove 211 near one side of the clamping portion 220, and when the second body 210 is connected to the boss 120 through the clamping portion 220, the second protrusion 141 of the second boss 140 is located on the sliding groove 211, and when the head assembly 200 rotates, the second protrusion 141 can slide on the sliding groove 211. Since one end of the sliding slot 211 is connected to the surface of the second body 210 near the clamping portion 220, when the second protrusion 141 slides to the surface of the second body 210 near the clamping portion 220, the second protrusion 141 fully lifts the second body 210, that is, the second protrusion 141 is fully located between the second body 210 and the first body 110 and is fully exposed by the gap between the second body 210 and the first body 110, and the first protrusion 222 fully slides into the third groove 142 and abuts against the third groove 142. The first protrusion 222 provides a proper damping feel to the head assembly 200 as it rotates into the third recess 142 and out of the third recess 142, adding a tactile cue to the rotation of the head assembly 200 to the operative position.

In some alternative embodiments, the plurality of clamping portions 220 are spaced apart, and the number of clamping portions 220 is the same as the number of the first grooves 121, the second grooves 122, the first sliding table 123, and the second sliding table 124.

In these alternative embodiments, the number of the clamping portions 220 is plural, and the second body portion 210 can be connected with the boss 120 of the handle assembly 100 through the plurality of clamping portions 220, so as to improve the connection stability of the head assembly 200 and the handle assembly 100. The number of the clamping portions 220 is the same as that of the first grooves 121, the second grooves 122, the first sliding tables 123 and the second sliding tables 124, that is, the clamping portions 220, the first grooves 121, the second grooves 122, the first sliding tables 123 and the second sliding tables 124 are regarded as a set of self-destroying connecting components, and when the self-destroying connecting components are multiple sets, the connecting stability of the head component 200 and the handle component 100 can be further improved. When the first grooves 121 are multiple, the first protrusions 222 slide into the second sliding table 124 from the second grooves 122, if the elastic arms 221 are not plastically deformed, the head assembly 200 is further rotated, and the first protrusions 222 can slide into the next first grooves 121 from the second sliding table 124, so that the head assembly 200 can be removed from the handle assembly 100 at this position.

Optionally, the number of the second protrusions 141 is multiple, and the number of the second protrusions 141 is the same as the number of the clamping portions 220.

Optionally, the number of the third grooves 142 is plural, and the number of the third grooves 142 is the same as the number of the clamping portions 220.

Optionally, the plurality of clamping portions 220 are uniformly distributed.

Optionally, the plurality of first grooves 121 are uniformly distributed.

Optionally, the plurality of second grooves 122 are uniformly distributed.

Alternatively, the plurality of first sliding tables 123 are uniformly distributed.

Optionally, the plurality of second sliding tables 124 are uniformly distributed.

Optionally, the plurality of second protrusions 141 are uniformly distributed.

Optionally, the plurality of third grooves 142 are uniformly distributed.

These embodiments are not all details described in detail according to the embodiments described hereinabove, nor are they intended to limit the invention to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various modifications as are suited to the particular use contemplated. This application is to be limited only by the claims and the full scope and equivalents thereof.

Claims

1. A surgical instrument, comprising;

the handle assembly comprises a first main body part and a boss protruding from one side of the first main body part, the boss is provided with a first groove and a second groove which are arranged at intervals, the first groove axially penetrates through the boss, a first sliding table is arranged between the first groove and the second groove, a second sliding table is arranged on one side, away from the first sliding table, of the second groove, and the distance between the second sliding table and the axis of the boss is gradually increased in the direction, away from the first sliding table, of the second groove;

the head assembly comprises a second main body part and at least one clamping part, wherein the clamping part extends out of the second main body part and comprises an elastic arm and a first protrusion positioned on the elastic arm, and the size of the first protrusion is matched with the size of the first groove and the size of the second groove, so that the first protrusion can slide into the first groove and slide into the second groove through the first sliding table.

2. A surgical instrument as recited in claim 1, wherein the boss includes a first boss and a second boss, the first boss being located between the second boss and the first body portion, the first groove extending axially through the first boss and the second boss along the boss, the second groove, the first slide, and the second slide each being disposed on the first boss.

3. A surgical instrument as claimed in claim 2, wherein the second boss projects radially from the second recess and/or the first ramp.

4. A surgical instrument as recited in claim 2, wherein a side of the first body portion adjacent the first boss is radially protruding from the second recess and/or the first sled.

5. A surgical instrument as recited in claim 2, wherein a distance between the first sled and the boss axis increases gradually in a direction from the first groove toward the second groove.

6. A surgical instrument as recited in claim 5, wherein a maximum distance between the second sled and the boss axis is greater than a maximum distance between the first sled and the boss axis.

7. A surgical instrument as recited in claim 2, wherein a surface outer edge of the second boss distal from the first body portion is provided with a second protrusion, and a surface outer edge of the second boss proximal to the second body portion is provided with a third recess, a largest dimension of the second protrusion in a radial direction of the boss being greater than or equal to a largest dimension of the third recess in the radial direction of the boss.

8. A surgical instrument as recited in claim 7, wherein the second protrusion is located between the first recess and the third recess.

9. A surgical instrument as recited in claim 7, wherein a side of the inner wall surface of the second body portion adjacent the clamping portion is provided with a chute such that the second protrusion is slidable within the chute, and wherein one end of the chute is connected to a surface of the second body portion adjacent the clamping portion.

10. A surgical instrument as recited in any one of claims 1-9, wherein a plurality of the clamping portions are spaced apart, the clamping portions being the same number as the first recess, the second recess, the first sled, and the second sled.