Assembly for surgical instrument and surgical kit

Abstract

An assembly for a surgical instrument and a surgical kit. The assembly comprises a separation member (200) and a packaging box (300). The separation member (200) and a surgical instrument (100) switch between a first state and a second state by means of a clipping mechanism. In the first state, the separation member (200) is connected to the surgical instrument (100). In the second state, the separation member (200) is detached from the surgical instrument (100). The packaging box (300) comprises an accommodation portion used for accommodating the separation member (200), and further comprises an operating member (340). The operating member (340) drives the clipping mechanism to switch the separation member (200) from the first state to the second state. The separation member is used for stripping the target tissue. The packaging box can not only provide packaging for the separation member, but also serve as a disassembling tool of the separation member relative to the surgical instrument.

Description

Assembly for surgical instrument and surgical kit TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and in particular to an assembly for a surgical instrument, which includes a separating piece for separating a target tissue and a packaging box for accommodating the separating piece.

[0002] The present application also relates to a surgical kit, which includes a surgical instrument and the above-mentioned assembly. BACKGROUND

[0003] An anastomat suitable for surgical operation is a surgical instrument capable of cutting and stapling excess tissue while suturing a wound of a patient, and is widely used in minimally invasive surgeries such as abdominal surgery, gynecology, pediatrics and thoracic surgery for cutting and anastomizing tissue. The anastomat enters the human body through a cannula of a puncture device precisely positioned at a surgical site, and then makes a longitudinal incision in the tissue and applies a staple on the opposite side of the incision, thereby cutting and anastomizing the tissue, similar to a stapler. The anastomat includes an end effector, which includes a cartridge seat for receiving a cartridge and a staple anvil. The anastomat also includes a cutting member operably supported relative to the cartridge seat. Once the doctor determines that the end effector properly grasps the tissue and is in a closed position, the doctor can fire the anastomat to cut and staple the tissue.

[0004] During the operation, the doctor sometimes needs to cut and staple a specific target tissue, which is attached to other tissues. For example, the doctor sometimes needs to cut and staple a blood vessel, but the blood vessel is usually attached to other tissues. In order to cut and staple the blood vessel, the doctor needs to peel the blood vessel from the other tissues, then make the blood vessel enter between the staple anvil and the cartridge seat, and finally use the anastomat to cut and staple the blood vessel.

[0005] When the doctor operates the existing surgical instrument, if the doctor needs to cut and staple a specific target tissue, the doctor usually needs to repeatedly adjust the angle of the surgical instrument, so that the distal end of the end effector is aligned with the target tissue, and then the doctor exerts force on the surgical instrument in the direction towards the distal end, so that the distal end of the end effector first separates the target tissue, and then the target tissue is located between the staple anvil and the cartridge seat, thereby cutting and stapling the target tissue.

[0006] However, the design of the distal end of the existing end effector is not suitable for peeling the target tissue, and the doctor's operation of separating the target tissue using the end effector of the surgical instrument is time-consuming and laborious.

[0007] SUMMARY

[0008] In view of the deficiencies of the prior art, the present application aims to provide an assembly for a surgical instrument, which includes a separating piece for separating a target tissue and a packaging box for accommodating the separating piece.

[0009] The application is realized by the following technical scheme: a component for a surgical instrument, the component comprising a separate piece and a package box, the separate piece and the surgical instrument are switched between a first state and a second state by a clamping mechanism, in the first state, the separate piece is connected with the surgical instrument; in the second state, the separate piece is disconnected with the surgical instrument; the package box comprises a receiving part for receiving the separate piece, and the package box further comprises an operating piece, the operating piece drives the clamping mechanism so that the separate piece is switched from the first state to the second state.

[0010] Further, the operating piece comprises an operating part and a driving part, the operating part is pressed by an operator, and the driving part drives the clamping mechanism so that the separate piece is switched from the first state to the second state.

[0011] Further, the operating part performs a first movement to drive the driving part to perform a second movement so that the separate piece is switched from the first state to the second state.

[0012] Further, the first movement comprises rotation, and the second movement comprises rotation.

[0013] Further, the package box comprises a shell, the receiving part is arranged in the shell, the shell further comprises a first side wall and a second side wall surrounding the receiving part, the first side wall and the second side wall have a gap therebetween, and the first side wall forms the operating part.

[0014] Further, the operating part comprises a free end and a connecting end connected with the second side wall, the free end rotates around the joint of the connecting end and the second side wall to drive the driving part to move.

[0015] Further, the rotation axis of the free end is perpendicular to the central symmetry plane of the longitudinal direction of the package box.

[0016] Further, at least a part of the operating part is made of an elastic material, and the at least a part comprises the connecting end.

[0017] Further, the extension directions of the operating part and the driving part are perpendicular to each other.

[0018] Further, the package box comprises a shell, the shell is provided with an opening, and the opening is arranged opposite to the driving part.

[0019] Further, the receiving part is provided with a guide surface, and the guide surface is used for guiding the separate piece to be inserted into the receiving part along the guide surface.

[0020] Further, the accommodation portion is provided with a longitudinally extending abutting surface for limiting the separation piece.

[0021] Further, the accommodation portion is further provided with a guide surface for guiding the separation piece to move into the accommodation portion along the guide surface; the abutting surface intersects with the guide surface and is arranged at an angle.

[0022] Further, the accommodation portion has an open end for inserting the separation piece into the accommodation portion and a closed end for limiting the separation piece.

[0023] Further, the accommodation portion is provided with a protruding portion on the surface.

[0024] Further, the clamping mechanism comprises a clamping portion arranged on the separation piece and a clamping port arranged on the surgical instrument; in the first state, the clamping portion and the clamping port are elastically matched; the operating piece drives the clamping portion to disengage the clamping portion from the clamping port, so that the separation piece is switched from the first state to the second state.

[0025] Further, the packaging box is made of transparent material.

[0026] Compared with the prior art, the component of the present application comprises a separation piece and a packaging box, the separation piece is used for peeling the target tissue, so that the operation of the doctor is more convenient. The packaging box not only provides packaging for the separation piece, but also serves as a disassembly tool for the separation piece relative to the surgical instrument, and the design is very ingenious.

[0027] The present application also provides a surgical kit, which comprises a surgical instrument and the above-mentioned component.

[0028] The present application realizes the technical scheme as follows: a surgical kit, which comprises the surgical instrument and the component according to any one of the above-mentioned surgical instruments, and the separation piece is used for mounting to the surgical instrument to peel the tissue.

[0029] Further, the separation piece and the surgical instrument are detachably mounted through a cooperation mechanism, the cooperation mechanism comprises a plug-in portion arranged on the separation piece and a plug-in channel arranged on the surgical instrument; the cooperation mechanism further comprises a clamping portion arranged on the separation piece and a clamping port arranged on the surgical instrument, when the clamping portion and the plug-in portion are inserted into the clamping port along the plug-in channel and clamped with the clamping port, the separation piece is fixed to the surgical instrument.

[0030] Further, the side wall of the insertion channel is provided with a channel groove extending from the distal end to the proximal end, the operating member comprises an operating part and a driving part, the driving part drives the clamping part to be separated from the surgical instrument, and the width of the driving part is less than the width of the channel groove.

[0031] Compared with the prior art, the surgical kit comprises the above components and the surgical instrument, can meet the requirements of the doctor to separate the target tissue and cut and suture the target tissue, and is convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0032] Fig. 1 is a front view of the surgical instrument provided by the present application;

[0033] Fig. 2 is a perspective view of the abutment seat and the separating piece of the surgical instrument shown in Fig. 1, showing the front view and part of the back view, respectively;

[0034] Fig. 3 and Fig. 4 are perspective views of the separating piece shown in Fig. 2;

[0035] Fig. 5 is a perspective exploded view of the separating piece shown in Fig. 4;

[0036] Fig. 6 is a partial perspective view of the abutment seat of the surgical instrument shown in Fig. 1;

[0037] Fig. 7 and Fig. 8 are perspective views of the combination of the abutment seat, the separating piece and the packaging box;

[0038] Fig. 9 and Fig. 10 are perspective exploded views of the combination shown in Fig. 8;

[0039] Fig. 11 is a perspective view of the packaging box shown in Fig. 10;

[0040] Fig. 12 and Fig. 13 are longitudinal sectional views of Fig. 7, and the state change of Fig. 12 to Fig. 13 shows the state change process of disassembling the separating piece by using the packaging box;

[0041] Fig. 14 is an enlarged view of part A in Fig. 12;

[0042] Fig. 15 is an enlarged view of part B in Fig. 12;

[0043] Fig. 16 is a perspective view of the separating piece provided by the second embodiment of the present application; Fig. 17 is a perspective exploded view of the separating piece shown in Fig. 16;

[0044] Fig. 18 is a perspective exploded view of the separating piece provided by the third embodiment of the present application;

[0045] Fig. 19 is a perspective view of the separating piece provided by the fourth embodiment of the present application;

[0046] Fig. 20 is a perspective exploded view of the separating piece shown in Fig. 19;

[0047] Fig. 21 is a perspective view of the separate piece mounted to the staple buttress according to a fifth embodiment of the present application;

[0048] Fig. 22 is a perspective view of the separate piece shown in Fig. 21;

[0049] Fig. 23 is a perspective view of the separate piece mounted to the staple buttress according to a sixth embodiment of the present application;

[0050] Figs. 24 and 25 are perspective exploded views of Fig. 23;

[0051] Fig. 26 is a perspective view of the separate piece shown in Fig. 23;

[0052] Fig. 27 is a perspective view of the separate piece mounted to the staple buttress according to a seventh embodiment of the present application;

[0053] Fig. 28 is a perspective view of the separate piece shown in Fig. 27;

[0054] Fig. 29 is a perspective exploded view of the separate piece shown in Fig. 28. DETAILED DESCRIPTION

[0055] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0056] The terms "proximal", "rear" and "distal", "front" used in the present application are relative to the clinician who manipulates the handle assembly of the surgical instrument. The terms "proximal", "rear" refer to the part close to the clinician, and the terms "distal", "front" refer to the part away from the clinician. For example, the handle assembly is proximal and rear, and the end effector is distal and front; for another example, the proximal end of a certain component means the end relatively close to the handle assembly, and the distal end means the end relatively close to the end effector. In the present application, the relative position relationship of the components of the separate piece, such as the relative position at the "proximal" end or the "distal" end, is referred to the state that the separate piece is mounted to the surgical instrument. The terms "upper", "lower" are referred to the relative position of the staple buttress and the staple cartridge seat of the end effector, specifically, the staple buttress is "upper", and the staple cartridge seat is "lower".

[0057] The term "longitudinal" is defined as a direction from a distal end to a proximal end, or from a proximal end to a distal end. The "longitudinal" of the separating element is defined in the state that the separating element is mounted to the surgical instrument. The "longitudinal" of the packaging box is defined in the state that the separating element is mounted to the packaging box, i.e. the longitudinal direction of the packaging box is parallel to the longitudinal direction of the separating element. In addition, the term "longitudinally extending" means that the length of the component is greater than its width, for example, the component is in the form of a long strip, but it should be understood that the "longitudinally extending" does not limit the specific shape and position of the component.

[0058] The side surface of the separating element close to the target tissue is defined as the "front surface", and the side surface away from the target tissue is defined as the "back surface". Specifically, when the separating element is in operation, the concave surface of the working part is close to the target tissue and can separate the target tissue from other tissues, and the side surface where the concave surface is located is defined as the front surface, and the side surface where the convex surface is located is defined as the back surface.

[0059] It should be understood that the terms "proximal", "distal", "rear", "front", "upper", "lower", "front surface", "back surface" are defined for the convenience of description, however, the surgical instrument can be used in many directions and positions, therefore, these terms expressing relative positional relationship are not limited and absolute. The "longitudinal" is also defined for the convenience of description. In the present application, the above definitions should follow the explicit provisions and limitations if there are any.

[0060] In the present application, unless otherwise explicitly provided and limited, the terms such as "connected" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or movable connection, or integral; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. The meaning of "connection" is the same as "connected" except that "connection" does not include integral. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] Figure 1 shows the surgical instrument 100 in the present application.

[0062] Referring to Figure 1, the surgical instrument provided by the present application is a stapler, preferably an electric stapler. The surgical instrument 100 comprises a main machine 10 and a battery pack 12 detachably mounted on the main machine 10. Those skilled in the art can conceive that the surgical instrument can also be a manual stapler, and any scheme that is the same as or similar to the present embodiment is covered within the protection scope of the present application.

[0063] The main machine 10 comprises a shaft assembly 14, a housing 16 arranged at one end of the shaft assembly 14, and an end effector 18 arranged at the other end of the shaft assembly 14, wherein the end effector 18 is provided with a cutting member (not shown).

[0064] The shaft assembly 14 includes a sleeve 20 and a mandrel (not shown) housed within the sleeve 20. The housing 16 houses a motor and a transmission mechanism, the motor drives the end effector 18 and the cutting member through the transmission mechanism. The end effector 18 includes a staple cartridge seat 28 for operably supporting a staple cartridge assembly (not shown) therein and an anvil seat 30 rotatably coupled to the staple cartridge seat 28, the anvil seat 30 is selectively movable between an open position and a closed position to clamp or unclamp tissue. The cutting member is disposed within the end effector 18 for cutting tissue and the staple cartridge assembly is for stapling tissue.

[0065] The transmission mechanism includes an end effector drive arrangement that drives the anvil seat 30 of the end effector 18 to rotate relative to the staple cartridge seat 28 to selectively move between the open position and the closed position. Generally, the end effector drive arrangement includes a gear, a cam, the sleeve 20 that is driven linear motion by the gear through the cam, and the sleeve 20 that drives the anvil seat 30 to rotate through a conversion mechanism. The specific structure of the end effector drive arrangement is the same as or similar to the prior art and will not be described in detail.

[0066] The transmission mechanism also includes a cutting member drive arrangement, generally, the cutting member drive arrangement includes a gear, a rack, the mandrel, the gear rotates to drive the rack, the mandrel, and the cutting member to linear motion, so that the cutting member can cut tissue. The specific structure of the cutting member drive arrangement is the same as or similar to the prior art and will not be described in detail.

[0067] In use, first, the end effector drive arrangement drives the sleeve 20 and in turn drives the anvil seat 30 to rotate to cooperate with the staple cartridge seat 28 to clamp the target tissue; then, the motor is started and rotates forward, the cutting member drive arrangement drives the cutting member through the mandrel to advance, the cutting member moves from the initial position to the terminal position within the end effector 18 of the surgical instrument, and the cutting member synchronously pushes the pusher block in the staple cartridge to move from the initial position to the terminal position, achieving the effect of cutting excess tissue while stapling the cut tissue; subsequently, the motor reverses, the cutting member drive arrangement drives the cutting member through the mandrel to retreat to the initial position; then, the end effector drive arrangement drives the sleeve 20 and in turn drives the anvil seat 30 to open to unclamp the tissue; finally, the end effector drive arrangement drives the sleeve 20 and in turn drives the anvil seat 30 to close. Of course, before and after use, the anvil seat 30 needs to be closed relative to the staple cartridge seat 28, so that the end effector 18 can be inserted into or removed from the patient's body through the trocar sleeve, which will not be described in detail.

[0068] FIGS. 2 to 15 show the separate pieces of the first embodiment of the present application, which are used in cooperation with the surgical instrument 100.

[0069] Please refer to FIG. 1 and FIG. 2, the embodiment further provides a separate piece 200 used in cooperation with the surgical instrument 100, the separate piece 200 is used to separate tissue, in particular, the separate piece 200 is used to separate target tissue from other tissue, so as to facilitate the surgical instrument 100 to cut and suture the target tissue. For example, the doctor first uses the separate piece 200 to separate the blood vessel from other tissue, and then uses the surgical instrument 100 to cut and suture the separated blood vessel.

[0070] The separate piece 200 is detachably connected with the surgical instrument 100. That is, the separate piece 200 is switched between a first state and a second state, in the first state, the separate piece 200 is connected with the surgical instrument 100, and in the second state, the separate piece 200 is disconnected with the surgical instrument 100.

[0071] Therefore, when the separate piece 200 is needed to be used, the doctor connects the separate piece 200 with the surgical instrument 100, the doctor first separates the target tissue from other tissue by using the separate piece 200, and then the doctor moves the surgical instrument 100 forward to make the target tissue enter between the staple cartridge seat 28 and the anvil seat 30, and operates the surgical instrument 100 to cut and suture the target tissue. When the separate piece 200 is not needed to be used, the doctor switches the separate piece 200 from the first state to the second state, so that the separate piece 200 is disconnected with the surgical instrument 100, thereby avoiding that the separate piece 200 occupies the operation space and affects the convenience of the surgical instrument 100 to cut and suture other tissue.

[0072] In particular, the separate piece 200 is detachably connected with the end effector 18 of the surgical instrument 100. The end effector 18 is a working part of the surgical instrument 100 which directly contacts and cuts and sutures tissue, and the separate piece 200 is detachably connected with the end effector 18, which conforms to the operation habit of the doctor and facilitates the operation of the doctor.

[0073] More specifically, the separate piece 200 is detachably connected with the anvil seat 30 of the end effector 18. Since the anvil seat 30 of the existing surgical instrument 100 is not installed with other components such as a staple cartridge, the separate piece 200 is detachably connected with the anvil seat 30, which rationally utilizes the anvil seat 30 without affecting the installation and disconnection of other components (such as the staple cartridge), and the design is more reasonable. More specifically, the separate piece 200 is detachably connected with the distal end of the anvil seat 30, which is more in line with the operation habit of the doctor and facilitates the operation of the doctor.

[0074] Please refer to FIG. 3 to FIG. 5, the separate piece 200 comprises a mounting part 220 and a working part 230. The mounting part 220 is detachably connected with the surgical instrument 100, in particular, detachably connected with the distal end of the anvil seat 30 of the end effector 18. The working part 230 is used to separate tissue.

[0075] The mounting portion 220 is detachably connected with the surgical instrument 100 through a cooperation mechanism. The cooperation mechanism includes a plug-in mechanism and a clamping mechanism. The plug-in mechanism includes a plug-in portion 222 arranged on the separation piece 200 and a plug-in channel 50 arranged on the surgical instrument 100. The clamping mechanism includes a clamping portion 240 arranged on the separation piece 200 and a clamping port 60 arranged on the surgical instrument 100. The plug-in channel 50 and the clamping port 60 are in communication, specifically, the clamping port 60 is in communication with the proximal end of the plug-in channel 50 and penetrates the side wall of the plug-in channel. When the separation piece 200 is mounted, the plug-in portion 222 and the clamping portion 240 are inserted into the surgical instrument 100 along the plug-in channel 50, and after a certain stroke, the clamping portion 240 is clamped into the clamping port 60, and the separation piece 200 is fixed to the surgical instrument 100. In this way, the mounting portion 220 of the separation piece 200 and the surgical instrument 100 are detachably connected through plug-in and clamping, reliable in mounting, and convenient in dismounting.

[0076] The mounting portion 220 includes the plug-in portion 222 and the clamping portion 240 connected with each other. The clamping portion 240 is elastically matched with the surgical instrument 100. That is, the clamping portion 240 is connected with the surgical instrument 100 under the action of elasticity, and is separated from the surgical instrument 100 by overcoming the action of elasticity, which is reliable in connection and convenient in dismounting. The source of the elasticity can be the elasticity of the clamping portion 240 itself, or other elastic bodies abutting against the clamping portion 240, which provides the clamping portion 240 with the elasticity.

[0077] Specifically, the clamping portion 240 is elastically matched with the clamping port 60. That is, the clamping portion 240 is clamped into the clamping port 60 under the action of elasticity, so that the separation piece 200 is fixed to the surgical instrument 100. By overcoming the action of elasticity, the clamping portion 240 can be separated from the clamping port 60, so that the separation piece 200 is separated from the surgical instrument 100.

[0078] The clamping portion 240 has a first end 241 and a second end 242, the first end 241 is connected with the plug-in portion 222, and the second end 242 is elastically matched with the surgical instrument 100. Specifically, the second end 242 rotates around the first end 241, so that the separation piece 200 is fixed to or separated from the surgical instrument 100, thereby realizing detachable connection. The second end 242 rotates around the first end 241, that is, the rotation axis is located at the position of the first end 241. In this embodiment, the rotation axis of the second end 242 is perpendicular to the central symmetry plane of the longitudinal direction of the separation piece 200. In this embodiment, the first end 241 is located at the distal end relative to the second end 242, and those skilled in the art can conceive that the first end 241 can also be located at the proximal end relative to the second end 242.

[0079] Specifically, the first end 241 comprises a rotating shaft 243, the insertion part 222 is provided with a shaft hole 224, the rotating shaft 243 is installed in the shaft hole 224, and the rotating shaft 243 rotates in the shaft hole 224 to make the clamping part 240 rotate, and finally make the detachable part 200 and the surgical instrument 100 detachably connected. The rotating axis is the central axis of the rotating shaft 243.

[0080] The shaft hole 224 is partially open, and the rotating shaft 243 is partially accommodated in the shaft hole 224. That is, the circumferential extension angle of the shaft hole 224 is less than 360 degrees, for example, the circumferential extension angle of the shaft hole 224 is 180 degrees. The shaft hole 224 is partially open, which is very convenient for the operation of installing the rotating shaft 243 into the shaft hole 224, and can also reduce the size of the detachable part 200, so that the structure of the detachable part 200 is more compact.

[0081] The first end 241 of the clamping part 240 is installed on the first side surface 229 of the insertion part 222. It should be noted that the first side surface 229 refers to the surface on the back side of the insertion part 222, and this surface is not limited to the planar area indicated by the reference numeral 229. The second end 242 of the clamping part 240 protrudes from the second side surface 227 of the insertion part 222. It should be noted that the second side surface 227 refers to the surface on the front side of the insertion part 222, and this surface is not limited to the planar area indicated by the reference numeral 227. The insertion part 222 is provided with an opening 228 penetrating the first side surface 229 and the second side surface 227, and the second end 242 protrudes from the second side surface 227 through the opening 228 from the first side surface 229.

[0082] Therefore, the opening 228 provides space for the movement stroke of the second end 242 of the clamping part 240, that is, the thickness of the insertion part 222 itself provides space for the movement stroke of the second end 242 of the clamping part 240, which is not only reliable in structure, but also can reduce the size of the detachable part 200, and the structure design is very reasonable.

[0083] The second end 242 of the clamping part 240 is elastically connected with the clamping interface 60 on the surgical instrument 100. In this embodiment, the clamping part 240 itself does not have elasticity, and the detachable part 200 further comprises a supporting part 250 abutting against the clamping part 240, and the supporting part 250 elastically supports the clamping part 240. The supporting part 250 is at least partially made of elastic material, and the supporting part 250 provides elastic force for the clamping part 240. That is, the clamping part 240 only needs to realize the function of connecting or disconnecting with the surgical instrument 100, and the supporting part 250 only needs to realize the function of providing elastic force, the clamping part 240 and the supporting part 250 play their respective roles, which can reduce the process requirements of the clamping part 240 and the supporting part 250, and is more in line with the mass production demand.

[0084] To apply a force to the clamping portion 240 toward the second side surface 227, so that the clamping portion 240 is kept in the clamping port 60 without external force, thereby keeping in the first state connected with the surgical instrument 100, the support portion 250 is arranged on the first side surface 229 of the clamping portion 240 and away from the second side surface 227 relative to the clamping portion 240.

[0085] Specifically, the support portion 250 has a first portion 251 connected with the first side surface 229 and a second portion 252 abutting the clamping portion 240, which provides a spring force to the clamping portion 240 to make the clamping portion 240 have a tendency to be clamped into the clamping port 60.

[0086] To reliably fix the support portion 250 on the separation piece 200, the mounting portion 220 is provided with a connecting portion 260, and the support portion 250 is welded and fixed with the mounting portion 220 at the connecting portion 260. Those skilled in the art can conceive that other suitable fixing methods can also be used according to the materials of the support portion 250 and the mounting portion 220.

[0087] As described above, the shaft hole 224 in which the rotating shaft 243 is mounted is partially open. To avoid the rotating shaft 243 from falling off the open shaft hole 224, the support portion 250 covers the open part of the shaft hole 224. Specifically, the connecting portion 260 is arranged adjacent to the shaft hole 224, and the connecting portion 260 is away from the second end 242 of the clamping portion 240 relative to the shaft hole 224. The distal end of the first portion 251 of the support portion 250 is fixed on the connecting portion 260. Thus, the support portion 250 extending from the distal end toward the proximal end can naturally cover the shaft hole 224, and the structural design is very reasonable.

[0088] As can be seen, the position of a part of the rotating shaft 243 is defined by the shaft hole 224, and the position of another part is defined by the support portion 250. Compared with the support portion 250 stacked on the fully closed shaft hole 224, the size of the separation piece 200 can be significantly reduced, and the structure of the separation piece 200 is more compact.

[0089] It is emphasized that the present application is committed to reducing the size of the separation piece 200 in many aspects. Although these designs may not be visible to the naked eye (e.g., less than 1 mm), they are crucial to the size of the separation piece 200 because: the end effector 18 of the surgical instrument 100 and the separation piece 200 both need to pass through the puncture cannula to operate in the patient's body. In order to achieve the purpose of minimally invasive surgery, the puncture cannula has a standard size (e.g., 5mm\10mm\12mm\15mm), and the width of the end effector 18 and the separation piece 200 must be less than the diameter of the puncture cannula. Therefore, even if the size is reduced by less than 1 mm, the designer needs to repeatedly consider and optimize the structure to achieve the design of the end effector 18 and the separation piece 200.

[0090] As mentioned above, the first end 241 of the clamping portion 240 is mounted on the first side surface 229 of the insertion portion 222, and the first part 251 of the supporting portion 250 is connected with the first side surface 229. In order to better arrange the clamping portion 240 and the supporting portion 250, the first side surface 229 of the insertion portion 222 is inwardly recessed to form a receiving space 226, i.e. the insertion portion 222 of the mounting portion 220 is provided with the receiving space 226, and part of the clamping portion 240 is accommodated in the receiving space 226. The receiving space 226 includes an opening 228 extending through the insertion portion 222, and the second end 240 of the clamping portion 240 protrudes from the opening 228 to clamp the card connector 60 in the first state. When the separating piece 200 is in the first state, part of the clamping portion 240 is accommodated in the receiving space 226. Preferably, when the separating piece 200 is in the first state, part of the supporting portion 250 is also accommodated in the receiving space 226.

[0091] Since the receiving space 226 can accommodate at least part of the clamping portion 240, and even at least part of the supporting portion 250, the clamping portion 240 and the supporting portion 250 are prevented from protruding out of the first side surface 229 of the insertion portion 222, the space of the insertion portion 222 itself is reasonably utilized, the size of the insertion portion 222 can be reduced, and the structure of the insertion portion 222 can be more regular. The receiving space 226 accommodates part of the clamping portion 240, and also limits the clamping portion 240; and the second end 242 of the clamping portion 240 is located in the opening 228, so that the second end 242 can change position under the action of the elastic force to play its function. Preferably, part of the supporting portion 250 is accommodated in the receiving space 226, which can also prevent the supporting portion from interfering with the insertion channel when the insertion portion is inserted into the insertion channel.

[0092] In the embodiment, the insertion portion 222 and the clamping portion 240 themselves do not have elasticity, and the separating piece 200 further includes an elastic body abutting against the clamping portion 240, and the elastic body abuts against the clamping portion 240 to elastically support the clamping portion 240. The elastic body is the supporting portion 250, the supporting portion 250 is at least partially made of an elastic material, and the supporting portion 250 provides an elastic force for the clamping portion 240. Those skilled in the art can conceive that the clamping portion 240 itself can also have elasticity, and any solution that is the same as or similar to the embodiment is covered within the protection scope of the present application.

[0093] In the embodiment, no other elastic body is arranged between the support portion 250 and the clamping portion 240, and only the support portion 250 provides elastic force for the clamping portion 240, that is, the elastic body abutting against and elastically supporting the clamping portion 240 only includes the support portion 250. Those skilled in the art can conceive that, on the basis of arranging the support portion 250, another elastic body, for example, a second elastic body, is arranged between the support portion 250 and the clamping portion 240, and the second elastic body and the support portion 250 jointly provide elastic force for the clamping portion 240. Alternatively, no support portion 250 is arranged, and only the other elastic body provides elastic force for the clamping portion 240, and all the solutions same as or similar to the embodiment are covered in the protection scope of the present application.

[0094] The second end 242 of the clamping portion 240 includes a clamping surface 244 and an inclined surface 246 arranged at an angle with the clamping surface 244. As shown in FIG. 3, the clamping surface 244 extends vertically, and as shown in FIGS. 2, 3 and 6, the clamping surface 244 abuts against the side wall of the clamping port 60 to prevent the separation piece 200 from falling off the surgical instrument 100. As shown in FIG. 3, the inclined surface 246 extends upward from the proximal end to the distal end, and here, upward refers to the direction toward the opening of the clamping port 60. Under the guidance of the inclined surface 246, the second end 242 changes position due to the rotation of the clamping portion 240 during the insertion into the insertion channel 50, so that the insertion portion 222 and the clamping portion 240 of the separation piece 200 can be more smoothly inserted into the insertion channel 50 from the distal end to the proximal end.

[0095] The second end 242 of the clamping portion 240 further includes a top surface 248 arranged between the clamping surface 244 and the inclined surface 246. The top surface 248 has a certain width, which can make the structure of the second end 242 more reliable. The top surface 248 can be a flat surface or an inclined surface 246. If the top surface 248 is an inclined surface, the inclination angle of the top surface 248 is preferably smaller than that of the inclined surface 246.

[0096] It should be noted that, in the embodiment, the clamping portion 240 is integrally formed, and those skilled in the art can conceive that, the parts of the clamping portion 240 are separately formed and connected by a specific connection method, and all the solutions same as or similar to the embodiment are covered in the protection scope of the present application.

[0097] As described above, the mounting portion 220 of the separation piece 200 includes the insertion portion 222 mounting the clamping portion 240. Please refer to FIGS. 4 to 6, the insertion portion 222 extends longitudinally, and correspondingly, the insertion channel 50 extends from the distal end face of the surgical instrument 100 to the proximal end, specifically, the insertion channel 50 extends from the distal end face of the anvil abutting portion 30 to the proximal end.

[0098] As known to those skilled in the art, the anvil 30 is provided with a longitudinally extending knife slot 33 which receives and guides the movement of a portion of the cutting member of the surgical instrument 100. The knife slot 33 is centrally located on the anvil 30 and extends longitudinally. The insertion channel 50, the clamping port 60 and the knife slot 33 are coaxially arranged and in communication with each other, and have a regular structure.

[0099] The clamping port 60 is in communication with the proximal end of the insertion channel 50 and penetrates the side wall of the insertion channel 50. Specifically, the clamping port 60 penetrates the side wall of the anvil face 31 of the anvil 30.

[0100] Therefore, when the separate piece 200 needs to be installed on the surgical instrument 100, the insertion portion 222 of the separate piece 200 is aligned with the insertion channel 50, and the separate piece 200 is pushed in the direction from the distal end to the proximal end. During the pushing process, the insertion channel 50 abuts against the inclined surface 246 of the second end 242 of the clamping portion 240, so that the clamping portion 240 is rotated against the elastic force provided by the supporting portion 250 until the second end 242 of the clamping portion 240 and the insertion portion 222 are smoothly inserted into the insertion channel 50. The separate piece 200 is continuously pushed until the second end 242 of the clamping portion 240 is aligned with the clamping port 60. The second end 242 of the clamping portion 240 is reversely rotated under the action of the elastic force provided by the supporting portion 250, and the second end 242 protrudes from the second side surface 227 of the insertion portion 222 and is clamped into the clamping port 60. The separate piece 200 is installed in place.

[0101] The side wall of the insertion channel 50, specifically, the side wall of the insertion channel 50 located on the anvil face 31 of the anvil 30 includes a first hollow portion 51 and a second hollow portion 52 which are in communication with the clamping port 60. The second hollow portion 52 is located at the distal end relative to the first hollow portion 51. The width of the second hollow portion 52 is greater than that of the first hollow portion 51. The width of the clamping port 60 is greater than that of the first hollow portion 51.

[0102] The second hollow part 52 is wider, which makes the insertion of the separating piece 200 easier. When the separating piece 200 moves in the second hollow part 52, the clamping part 240 does not need to rotate against the elasticity of the supporting part 250, and the supporting part 250 does not need to deform, which prolongs the service life of the separating piece 200 and avoids the increase of resistance caused by the contact between the clamping part 240 and the second hollow part. When the inclined surface 246 of the second end 242 of the separating piece 200 contacts the first hollow part 51, the second end 242 of the clamping part 240 will rotate against the elasticity of the supporting part 250 and move inside the first hollow part 51. When the second end 242 of the clamping part 240 aligns with the clamping interface 60, the clamping surface 244 of the clamping part 240 can abut against the side wall of the first hollow part 51 of the clamping interface 60, and the second end 242 of the clamping part 240 reversely rotates and protrudes from the second side surface 227 under the elastic force of the supporting part 250, so that the second end 242 is smoothly clamped into the clamping interface 60, and the separating piece 200 is installed in place.

[0103] It can be seen that the reasonable design of the first hollow part 51 and the second hollow part 52 not only prolongs the service life of the separating piece 200, but also makes the installation of the separating piece 200 easier.

[0104] The length of the second hollow part 52 is greater than that of the first hollow part 51. That is, when the clamping part 240 moves in the longer second hollow part 52, the clamping part 240 does not need to rotate against the elasticity of the supporting part 250, and the supporting part 250 does not deform, which prolongs the service life of the separating piece 200.

[0105] The width of the first hollow part 51 is equal to the width of the tool path groove 33. The tool path groove 33, the clamping interface 60, the first hollow part 51, and the second hollow part 52 are coaxially arranged, which can ensure that the position of the separating piece 200 after installation is appropriate and does not deviate from the central axis, and facilitates the doctor to operate the separating piece.

[0106] The second hollow part 52, the first hollow part 51, the clamping interface 60, and even the tool path groove 33 form a channel groove extending from the distal end to the proximal end of the side wall of the insertion channel 50.

[0107] The distal end of the nail abutting seat 30 is provided with a first wedge-shaped part 39 having a first inclined surface 38, and the proximal end of the working part 230 is provided with a second wedge-shaped part 239 having a second inclined surface 238. After the separating piece 200 is installed in the nail abutting seat 30, the first inclined surface 38 abuts against the second inclined surface 238.

[0108] The first inclined surface 38 and the second inclined surface 238 abut, so that the first wedge-shaped portion 39 and the second wedge-shaped portion 239 are superimposed, which can make the separating element 200 more reliably installed on the nail abutment 30. At the same time, the first wedge-shaped portion 39 can make the distal end of the nail abutment 30 thinner than other parts, and the second wedge-shaped portion 239 can make the proximal end of the working portion thinner than other parts. That is, even if the first wedge-shaped portion 39 and the second wedge-shaped portion 239 are superimposed, the size of the joint will not be significantly increased. On the one hand, the superposition makes the installation reliable, and on the other hand, the superposition does not significantly increase the size, and the design is very reasonable.

[0109] The second hollowed portion 52 is arranged on the first inclined surface 38. The mounting portion 220 extends from the second inclined surface 238 in the direction towards the proximal end, and the structure is compact and the design is reasonable.

[0110] The combined thickness of the first wedge-shaped portion 39 and the second wedge-shaped portion 239 is equivalent to the thickness of the nail abutment 30 at the proximal end adjacent to the first inclined surface 38, and / or equivalent to the thickness of the separating element at the distal end adjacent to the second inclined surface 238.

[0111] The thickness is equivalent, that is, the thickness is approximately equal, which avoids steps at the junction of the separating element 200 and the nail abutment 30, thereby avoiding scratching the tissue.

[0112] As described above, the separating element 200 includes the mounting portion 220 and the working portion 230, and the working portion 230 is used to separate the tissue.

[0113] The working portion 230 includes a proximal end 231 and a distal end 232, and the width of the working portion 230 gradually decreases in the direction from the proximal end 231 towards the distal end 232. When the working portion 230 separates the tissue, the narrower distal end 232 is preferentially in contact with the tissue, and the narrower distal end 232 can be conveniently inserted into the tissue and separate the target tissue from other tissues, and the operation is more convenient.

[0114] At least a portion of the working portion 230 extends in an arc from the proximal end 231 towards the distal end 232, and the working portion 230 has an arc-shaped working surface 234. The arc-shaped working surface 234 can make the working portion 230 smoothly pass through the gap between the target tissue and other tissues when separating the tissue, and better guide the end effector 18 to pass through the gap between the target tissue and other tissues, so that the operation of the separating element 200 and the surgical instrument 100 is more convenient.

[0115] The working portion 230 extends in an arc, and the working surface 234 extends in an arc, so the back surface of the working portion 230 also extends in an arc. The working portion 230 has a regular structure and an aesthetic appearance.

[0116] The outer contour lines of the working portion 230 and the mounting portion 220 of the separating element 200 have no obvious edges, and all the contour lines are rounded, which can prevent the edges from cutting the tissue.

[0117] As described above, the separating piece 200 is mounted at the distal end of the surgical instrument 100. The surgical instrument 100 has a mounting end for mounting the separating piece 200, and the separating piece 200 further comprises a resilient piece 280 which abuts against the end face of the mounting end. Specifically, the resilient piece 280 abuts against the distal end face of the anvil seat 30.

[0118] Since the distal end face of the mounting end is hard and the resilient piece 280 is soft and deformable, when the resilient piece 280 abuts against the distal end face of the mounting end, not only can the distal end face of the mounting end be prevented from scratching the tissue, but also the risk of the tissue being clamped in the gap between the distal end face of the mounting end and the separating piece 200 can be reduced, thus avoiding unnecessary pulling of the tissue and preventing damage to the tissue.

[0119] The outer surface of the resilient piece 280 protrudes from or is flush with the outer surface of the mounting end. Specifically, the anvil seat has an anvil face 31 and a back face 32, and in this embodiment, the outer surface of the resilient piece 280 is preferably flush with or protrudes from the back face 32 of the anvil seat 30. When the target tissue is peeled from other tissues, since the mounting end on the side of the back face 32 of the anvil seat 30 is prone to scratch the other tissues, the outer surface of the resilient piece 280 being flush with or protruding from the back face 32 of the anvil seat 30 can maximize the prevention of the distal end face of the mounting end from scratching the tissue and minimize the risk of the tissue being clamped in the gap between the distal end face of the mounting end and the separating piece 200.

[0120] The separating piece 200 is provided with a slot 290. The mounting end has a first outer surface 91, and the separating piece 200 has a second outer surface 202. When the separating piece 200 is in the first state, the slot 290 is located at the abutment of the first outer surface 91 and the second outer surface 202, and the resilient piece 280 is arranged in the slot 290. The slot 290 can better mount the resilient piece 280 without affecting the function of the resilient piece 280.

[0121] The outer surface of the resilient piece 280 protrudes from or is flush with the second outer surface 202. The slot 290 can better mount the resilient piece 280, but there is a risk of scratching the tissue at the proximal end and / or the distal end of the slot 290. By making the outer surface of the resilient piece 280 protrude from or be flush with the second outer surface 202, not only is the mounting of the resilient piece 280 facilitated, but also the tissue can be prevented from being scratched.

[0122] The resilient piece 280 is shaped to match the shape of the slot 290, which can maximize the prevention of scratching the tissue. The resilient piece 280 is in interference fit with the slot 290, which not only makes the mounting of the resilient piece 280 reliable, but also facilitates the resilient piece 280 to protrude from the surface adjacent thereto, thereby maximizing the prevention of scratching the tissue.

[0123] The slot 290 extends in the circumferential direction. This can make the mounting of the elastic member 280 more reliable.

[0124] The bottom surface of the slot 290 is uneven, specifically, the bottom surface of the slot includes recesses and / or protrusions, which can increase the friction between the slot 290 and the elastic member 280, so that the elastic member 280 can be reliably mounted in the slot 290.

[0125] The bottom surface of the slot 290 is symmetrically arranged with respect to the center symmetry plane of the longitudinal direction of the separating member 200. The structure is regular, and the elastic member 280 is uniformly stressed, which better plays a role in preventing tissue from being scratched.

[0126] In the present embodiment, the elastic member 280 is an independently formed component, and the elastic member 280 is arranged in the slot 290 by manual mounting. Those skilled in the art can conceive that the elastic member 280 can also be formed by spraying plastic in the slot 290, and any solution identical or similar to the present embodiment is covered within the protection scope of the present application.

[0127] Please refer to FIGS. 7-13, the present embodiment also provides a packaging box 300 for the separating member 200, and the separating member 200 can be accommodated in the packaging box 300. The packaging box 300 provides an outer package for the separating member 200, which facilitates the transportation and storage of the separating member 200. The separating member 200 and the packaging box 300 form an assembly, which can be sold and purchased separately, or can be sold and purchased together with the surgical instrument 100 to form a surgical kit. Regardless of the selling and purchasing mode, it can meet the needs of doctors to peel the target tissue. Of course, the separating member 200 of the present embodiment can also be sold and purchased separately.

[0128] The packaging box 300 includes an accommodation portion 320 for accommodating the separating member 200, and the separating member 200 can be accommodated in the packaging box 300 by being inserted into the accommodation portion 320. The packaging box 300 includes a shell 350, and one side surface of the shell 350 is inwardly recessed to form an open accommodation portion 320. The accommodation portion 320 has an open end, which facilitates the separating member 200 to be loaded into or taken out of the packaging box 300.

[0129] The accommodation portion 320 has a closed end 330 arranged at a distance from the open end. The shape of the closed end 330 can match the shape of the distal end 232 of the separating member 200, or the shape of the closed end 330 can not match the shape of the distal end 232 of the separating member 200, as long as the closed end 330 can limit the insertion of the separating member 200. Therefore, during the insertion of the separating member 200 into the accommodation portion 320, when the distal end 232 of the separating member 200 abuts against the closed end 330 of the accommodation portion 320, the operator can perceive that the separating member 200 has been accommodated in place.

[0130] The accommodation portion 320 is provided with a protruding rib 324, which is provided with a guide surface 326 along which the separation piece 200 slides into the accommodation portion 320. The guide surface 326 can make the separation piece 200 more easily and accurately inserted into the accommodation portion 320.

[0131] The protruding rib 324 is also provided with an abutting surface 328, which intersects with the guide surface 326 and is arranged at an angle, specifically an obtuse angle. The abutting surface 328 is close to the closed end 330 of the accommodation portion 320 relative to the guide surface 326, and limits the separation piece 200. Specifically, when the separation piece 200 is loaded into the accommodation portion 320, the abutting surface 328 abuts with part of the working surface 234 of the separation piece 200, so that the separation piece 200 is more reliably accommodated in the accommodation portion 320.

[0132] As can be seen, the protruding rib 324 not only defines the size of the accommodation portion 320, but also guides the operation of sliding the separation piece 200 into the accommodation portion 320. After the separation piece 200 is slid into the accommodation portion 320, the protruding rib 324 also limits the separation piece 200, and the structure design is very reasonable.

[0133] Please refer to FIG. 11, the surface of the accommodation portion 320 is provided with a protruding portion 322. The protruding portion 322 can support the working portion 230 of the separation piece 200, and also can reduce the contact area between the working portion 230 and the accommodation portion 320, so that the insertion and removal operation of the separation piece 200 is more easily. In the embodiment, the protruding portion 322 is longitudinally long and substantially strip-shaped, and extends along the longitudinal direction. Those skilled in the art can think of other shapes of the protruding portion 322.

[0134] As described above, the separation piece 200 includes a resilient piece 280 which abuts with the end surface of the mounting end of the surgical instrument 100. Preferably, the outer surface of the resilient piece 280 protrudes from the outer surface of the working portion 230 of the separation piece 200, so that the resilient piece 280 elastically abuts with the inner surface of the accommodation portion 320.

[0135] During the process of inserting the separation piece 200 into the accommodation portion 320 of the packaging box 300, when the resilient piece 280 elastically abuts with the inner surface of the accommodation portion 320, the operator can perceive the damping effect, which provides the operator with operation feedback, and the operator can confirm whether the separation piece 200 is accommodated in place through the feedback. That is, in addition to the closed end 330 enabling the operator to perceive that the separation piece 200 has been inserted in place, the resilient piece 280 elastically abutting with the inner surface of the accommodation portion 320 further provides feedback for the operator, further improving the operation experience. Moreover, the friction between the resilient piece 280 and the inner surface of the accommodation portion 320 can prevent the separation piece 200 from falling off from the accommodation portion 320.

[0136] As mentioned above, the separating piece 200 is detachably connected with the surgical instrument 100 through the cooperation mechanism, and the separating piece 200 is switched between the first state and the second state, in the first state, the separating piece 200 is connected with the surgical instrument 100; in the second state, the separating piece 200 is disconnected with the surgical instrument 100.

[0137] In the embodiment, preferably, the packaging box 300 not only can accommodate the separating piece 200, but also can switch the separating piece 200 between the first state and the second state. That is, the packaging box 300 not only can provide packaging for the separating piece 200, but also can be used as a disassembly tool of the separating piece 200 relative to the surgical instrument 100, and the design is very ingenious.

[0138] Specifically, the packaging box 300 comprises an operating piece 340, the operating piece 340 acts on the cooperation mechanism to switch the separating piece 200 from the first state to the second state. More specifically, the operating part 342 acts on the clamping mechanism to switch the separating piece 200 from the first state to the second state.

[0139] The operating piece 340 comprises the operating part 342 and the driving part 348 connected with each other, the operating part 342 is pressed by the operator, and the driving part 348 acts on the clamping mechanism to switch the separating piece 200 from the first state to the second state.

[0140] The operating part 342 performs a first motion to drive the driving part 348 to perform a second motion, so as to switch the separating piece 200 from the first state to the second state. Wherein, the first motion comprises rotation; the second motion comprises rotation.

[0141] The packaging box 300 comprises a shell 350, the shell 350 is partially inwardly recessed to form the accommodating part 320, the shell 350 comprises a first side wall 351 and a second side wall 352 surrounding the accommodating part 320, the first side wall 351 and the second side wall 352 have a gap 353 therebetween, and the first side wall 351 forms the operating part 342. The gap 353 extends longitudinally from one end of the shell 350 to the other end in the direction, and the extension length of the gap 353 is less than the extension length of the shell 350. Due to the existence of the gap 353, the first side wall 351 can move relative to the second side wall 352, so as to drive the driving part 348 to move and finally act on the separating piece 200 to switch the separating piece 200 from the first state to the second state. Moreover, the first side wall 351 is a part of the shell 350, and a part of the shell 350 forms the operating part 342, without the need to additionally set other components to form the operating part 342, the structure is simple, and the design is reasonable.

[0142] The operation part 342 rotates to drive the driving part 348 to rotate. Specifically, the first side wall 351 comprises a connecting end 344 and a free end 346, the driving part 348 is connected to the free end 346, and the free end 346 rotates around the joint of the connecting end 344 and the second side wall to drive the driving part 348 to rotate. Without the need to set additional components, the structure is simple and convenient to operate.

[0143] The rotation axis of the free end 346 is perpendicular to the central symmetry plane of the longitudinal direction of the packaging box 300. The rotation axis of the free end 346 is also parallel to the rotation axis of the clamping part 240. The assembly structure formed by the separation piece 200 and the packaging box 300 is regular.

[0144] The connecting end 344 of the operation part 342 is made of elastic material. Optionally, the operation part 342 is made of elastic material as a whole. Thus, when the free end 346 is pressed, the connecting end 344 deforms to make the free end 346 rotate around the joint of the connecting end 344 and the second side wall. Thus, the doctor can drive the driving part 348 to move by overcoming the elastic force of the operation part 342 itself to switch the separation piece 200 from the first state to the second state. The structure of the packaging box 300 can be made simpler by using the elasticity of the operation part 342 itself. The elasticity of the operation part 342 itself makes the free end 346 remain in the raised state without external force, as shown in FIGS. 8, 11 and 12.

[0145] The operation part 342 and the driving part 348 are both longitudinally extended, and the extension directions of the operation part 342 and the driving part 348 are perpendicular to each other. The operation part 342 and the driving part 348 which are longitudinally extended and have extension directions perpendicular to each other provide sufficient stroke, so that the driving part 348 can effectively drive the clamping part 240, thereby making the separation piece 200 smoothly separate from the surgical instrument 100.

[0146] The operation part 342 and the driving part 348 are connected, and the two cooperate to abut against the clamping part 240. The operation part 342 and the driving part 348 are two independent components. Specifically, the driving part 348 is a pin, and the pin is tightly fitted with a hole on the operation part 342 to realize the connection between the driving part 348 and the operation part 342. Those skilled in the art can conceive that the operation part 342 and the driving part 348 can also be integrally formed.

[0147] As shown in FIGS. 11 and 12, the housing 350 is provided with an opening 354 through which the driving part 348 passes. The opening 354 is oppositely arranged to the driving part 348, so that when the driving part 348 is installed, the driving part 348 passes through the opening 354 and is connected to the operation part 342, and the opening 354 facilitates the installation tool to extend in to apply force to the driving part 348, so that the structure design is reasonable. The driving part 348 is connected to the free end 346 of the operation part 342, and correspondingly, the opening 354 is opposite to the free end 346 of the operation part 342, so that the layout is reasonable.

[0148] The width of the driving portion 348 is less than the width of the passage groove (including the second hollow portion 52, the first hollow portion 51, and the clamping port 60) on the nail- receiving seat 30. During the process of separating the separating piece 200 from the surgical instrument 100, the driving portion 348 can move in the passage groove and keep the state of pressing the second end 242 of the clamping portion 240.

[0149] Therefore, the operation piece 340 acts on the clamping mechanism to switch the separating piece 200 from the first state to the second state.

[0150] The distal end of the accommodating portion 320 is closed to form a closed end 330. When the separating piece 200 is installed to the surgical instrument 100, the packaging box 300 containing the separating piece 200 drives the separating piece 200 to move towards the surgical instrument 100, and the closed end 330 pushes the separating piece 200 to be inserted into the surgical instrument 100. Therefore, the closed end 330 of the accommodating portion 320 of the packaging box 300 pushes the separating piece 200 to switch from the second state to the first state.

[0151] The packaging box 300 is made of transparent material, which is not only beautiful, but also very convenient for the operator to observe whether the disassembly operation is in place when the separating piece 200 is disassembled by using the packaging box 300.

[0152] The application scenario of the separating piece 200 of the present embodiment will be described below.

[0153] After the separating piece 200 is factory-finished and before it is used, the separating piece 200 is located in the accommodating portion 320 of the packaging box 300, and the elastic piece 280 on the separating piece 200 elastically abuts against the inner side surface of the accommodating portion 320. The separating piece 200 is kept in the packaging box 300 under the elastic force of the elastic piece 280.

[0154] When the doctor needs to use the separating piece 200 to strip the tissue during the use of the surgical instrument 100, the doctor holds the shell 350 of the packaging box 300, so that the mounting portion 220 of the separating piece 200 is aligned with the insertion passage 50 arranged on the nail-receiving seat 30 of the end effector 18 of the surgical instrument 100, and the packaging box 300 is pushed towards the surgical instrument 100. During the pushing process, the insertion portion 222 and the clamping portion 240 of the separating piece 200 move along the insertion passage 50 until the second end 242 of the clamping portion 240 is aligned with and clamped into the clamping port 60. At this time, the separating piece 200 has been installed to the surgical instrument 100.

[0155] Subsequently, the doctor overcomes the friction between the elastic member 280 and the inner side surface of the accommodation portion 320 caused by the elastic force of the elastic member 280, pulls the packaging box 300 in a direction away from the surgical instrument 100, and separates the packaging box 300 from the separating member 200, so that the doctor can use the separating member 200 to separate the target tissue. Specifically, the narrow-width distal end 232 of the working portion 230 of the separating member 200 is aligned with the junction of the target tissue and other tissue, and the doctor pushes the surgical instrument 100 and the separating member 200 forward until the separating member 200 separates the target tissue from the other tissue.

[0156] After the separating member 200 separates the target tissue from the other tissue, the doctor moves the surgical instrument 100 in a direction toward the distal end 232, so that the target tissue enters between the staple anvil 30 and the cartridge seat. Subsequently, the doctor can use the surgical instrument 100 to cut and suture the target tissue.

[0157] When the doctor no longer needs to separate the tissue during the use of the surgical instrument 100, the doctor can remove the separating member 200 from the surgical instrument 100, so that the separating member 200 does not occupy space and affect other operations of the surgical instrument 100 when the separating member 200 is not needed. Specifically, the doctor moves the packaging box 300 to accommodate the separating member 200 in the accommodation portion 320 of the packaging box 300, and then presses the free end 346 of the operation portion 342. The free end 346 rotates around the connecting end 344 to drive the driving portion 348 to rotate until the driving portion 348 abuts against the inclined surface 246 or the top surface 248 of the second end 242 of the clamping portion 240. When the doctor continues to press the free end 346 of the operation portion 342, the driving portion 348 drives the second end 242 of the clamping portion 240 to rotate against the force of the supporting portion 250 until the second end 242 of the clamping portion 240 is separated from the clamping interface 60. Subsequently, the doctor pulls the packaging box 300 in a direction away from the surgical instrument 100, so that the packaging box 300 separates the insertion portion 222 of the separating member 200 from the insertion channel 50, and the separating member 200 is separated from the surgical instrument 100. After the separating member 200 is separated from the surgical instrument 100, the separating member 200 is located in the accommodation portion 320 of the packaging box 300 and returns to the state before use. It should be noted that after the driving portion 348 separates the second end 242 of the clamping portion 240 from the clamping interface, the driving portion 348 remains pressed against the second end 242 of the clamping portion 240. That is, during the separation of the separating member 200 from the surgical instrument 100, the driving portion 348 always presses and applies force to the second end 242 of the clamping portion 240. The driving portion 348 moves in the channel groove and finally separates the packaging box 300 from the surgical instrument 100.

[0158] FIGS. 16-17 show a separating member 200a used in cooperation with a surgical instrument according to a second embodiment of the present application.

[0159] The differences between the separating element 200a of the embodiment and the separating element of the first embodiment are described below.

[0160] In the first embodiment, the elastic member extends in a ring shape in the circumferential direction, and the ring-shaped elastic member is installed in the slot between the separating element and the distal end surface of the nail seat.

[0161] In the embodiment, the elastic member 280a is in a bag shape, and at least a portion of the working portion 230a is accommodated in the elastic member 280a. The at least a portion of the working portion 230a has the same shape as the elastic member 280a. Specifically, the working portion 230a is accommodated in the elastic member 280a from the distal end to the portion adjacent to the installation end of the surgical instrument. The end surface of the proximal end opening of the elastic member 280a abuts against the distal end surface of the installation end, so as to avoid scratching the tissue by the distal end surface of the installation end.

[0162] FIG. 18 shows the separating element for use with the surgical instrument according to the third embodiment of the present application.

[0163] The differences between the separating element 200b of the embodiment and the separating element of the first embodiment are described below.

[0164] In the first embodiment, the first end of the clamping portion includes a pivot, which is integrally formed with the other part of the clamping portion. The insertion portion is provided with an open shaft hole, the pivot portion is accommodated in the shaft hole, and the support portion covers the open part of the shaft hole, so that the second end of the clamping portion can rotate around the pivot.

[0165] In the embodiment, the separating element 200b includes a separate pivot 234b, and the first end of the clamping portion 240b is provided with a pin hole 299b through which the pivot 234b passes. The installation portion of the separating element 200b is provided with a circular hole 298b corresponding to the two end portions of the pin hole 299b, and the pivot 234b passes through the first circular hole 298b, the pin hole 299b, and the second circular hole 298b in sequence, so that the first end of the clamping portion 240b is rotatably installed on the installation portion. The pivot 234b is tightly fitted with the first circular hole 298b and / or the second circular hole 298b, so as to prevent it from falling off.

[0166] In addition, in the embodiment, the shape of the elastic member 280b of the separating element 200b, and the cooperation mechanism between the elastic member 280b and the working portion 230b are the same as those of the second embodiment, and will not be described again.

[0167] FIGS. 19 to 20 show the separating element for use with the surgical instrument according to the fourth embodiment of the present application.

[0168] The differences between the separating element 200c of the embodiment and the separating element of the third embodiment are described below.

[0169] In the third embodiment, the mounting portion of the separation piece is provided with a connecting portion at a distal side adjacent to the first end of the clamping portion, the first part of the supporting portion is connected to the connecting portion, the supporting portion extends from the connecting portion toward the proximal end, and the supporting portion exerts a force on the second part of the clamping portion located at the proximal end, so that the clamping portion has a tendency to be clamped into the clamping port of the surgical instrument.

[0170] In the third embodiment, the mounting portion of the separation piece is provided with a connecting portion at a distal side adjacent to the first end of the clamping portion, the first part of the supporting portion is connected to the connecting portion, the supporting portion extends from the connecting portion toward the proximal end, and the supporting portion exerts a force on the second part of the clamping portion located at the proximal end, so that the clamping portion has a tendency to be clamped into the clamping port of the surgical instrument.

[0171] Figs. 21-22 show a separation piece according to a fifth embodiment of the present application used in cooperation with a surgical instrument.

[0172] The difference between the separation piece 200d of the present embodiment and the separation piece of the second embodiment will be described below.

[0173] In the second embodiment, the clamping portion itself is not elastic, and the supporting portion provides the clamping portion with elastic force so that the clamping portion has a tendency to be clamped into the clamping port of the surgical instrument.

[0174] In the present embodiment, the clamping portion 240d itself is at least partially made of elastic material, and the clamping portion 240d itself has a tendency to be clamped into the clamping port of the surgical instrument. That is, no additional elastic body is provided to provide the clamping portion 240d with elastic force, and the structure is simpler.

[0175] In the present embodiment, the proximal end of the clamping portion 240d is connected to the mounting portion 220d of the separation piece 200d, the clamping portion 240d deforms, the distal end of the clamping portion 240d rotates around the proximal end, so that the clamping portion 240d is clamped into or separated from the clamping port, and finally the separation piece 200d is switched between the first state and the second state. It should be noted that no additional rotating shaft is provided at the proximal end, and the distal end rotates around the connection between the proximal end and the mounting portion 220d.

[0176] As can be seen, the structure of the separation piece 200d of the present embodiment is simpler, and the cost is lower.

[0177] Figs. 23-26 show a separation piece according to a sixth embodiment of the present application used in cooperation with a surgical instrument.

[0178] The difference between the separation piece 200e of the present embodiment and the separation piece of the fifth embodiment will be described below.

[0179] In the fifth embodiment, the clamping portion is provided on the front surface (the second side surface) of the mounting portion of the separation piece, and cooperates with the clamping port provided on the surgical instrument.

[0180] In the embodiment, the clamping portion 240e is arranged on the back of the mounting portion 220e of the separating piece 200e, the clamping interface 60e is arranged on the back 32e of the staple butt 30e, and the clamping portion 240e arranged on the back of the mounting portion 220e cooperates with the clamping interface 60e arranged on the back 32e of the staple butt 30e to achieve detachable connection of the separating piece 200e and the surgical instrument.

[0181] Since the clamping interface 60e is arranged on the back 32e of the staple butt 30e and is not affected by the cartridge seat, the operating member of the packaging box can be operated on the back 32e of the staple butt 30e to achieve mounting and dismounting of the separating piece 200e. The operation space is larger, and the operation is more convenient.

[0182] The distal end of the clamping portion 240e is connected to the separating piece 200e by welding or the like, and the clamping portion 240e itself has elasticity to achieve switching between the first state and the second state, which will not be described again.

[0183] FIGS. 27-29 show a separating piece for use with a surgical instrument according to a seventh embodiment of the present application.

[0184] The difference between the separating piece 200f of the embodiment and the separating piece of the fifth embodiment will be described below.

[0185] In the fifth embodiment, the proximal end of the clamping portion is fixed to the mounting portion of the separating piece, and the distal end of the clamping portion is matched with the clamping interface of the surgical instrument.

[0186] In the embodiment, the distal end of the clamping portion 240f is fixed to the part of the separating piece 200f other than the clamping portion 240f, and the proximal end of the clamping portion 240f is matched with the clamping interface of the surgical instrument.

[0187] In the embodiment, the separating piece 200f is provided with a receiving cavity 297f extending from the proximal end of the mounting portion in the direction toward the working portion, the receiving cavity 297f is partially located in the working portion, the distal end of the receiving cavity 297f is provided with a mounting shaft 296f extending vertically, and the clamping portion 240f is provided with a mounting hole that can be sleeved on the mounting shaft 296f. The mounting hole cooperates with the mounting shaft 296f to achieve matching of the distal end of the clamping portion 240f and the separating piece 200f. The proximal end of the clamping portion 240f can rotate relative to the distal end to achieve clamping and disengagement with the clamping interface.

[0188] It should be noted that, in the embodiment, although the mounting shaft 296f is a cylindrical shaft and the mounting hole is a circular hole, the clamping portion 240f will not rotate around the axis of the mounting shaft 296f, and the rotation axis of the clamping portion 240f is parallel to the working surface of the separating piece 200f, which is the same as in the foregoing embodiments.

[0189] In the present application, the doctor first separates the target tissue from other tissues by using the separating piece, and then moves the surgical instrument forward to make the target tissue enter between the staple cartridge seat and the anvil seat, and cuts and sutures the target tissue by operating the surgical instrument.

[0190] In the present application, the elastic body abuts against the end face of the mounting end, which can avoid scratching the tissue by the distal end face of the mounting end and reduce the risk of the tissue being clamped in the gap between the distal end face of the mounting end and the separating piece.

[0191] In the present application, the packaging box not only provides packaging for the separating piece, but also serves as a dismounting tool for the separating piece relative to the surgical instrument, which is very ingenious.

[0192] It should be understood that although the present specification is described in terms of embodiments, each embodiment does not necessarily contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0193] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and are not intended to limit the protection scope of the present application, and any equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. An assembly for a surgical instrument, the assembly comprising a separate piece and a package, characterized in that: The separating piece and the surgical instrument are switched between a first state and a second state by a clamping mechanism, in the first state, the separating piece is connected with the surgical instrument; in the second state, the separating piece is disconnected with the surgical instrument; the package box comprises a receiving part for receiving the separating piece, and further comprises an operating piece for driving the clamping mechanism to switch the separating piece from the first state to the second state.

2. The assembly of claim 1, wherein: The operating piece comprises an operating part for being pressed by an operator and a driving part for driving the clamping mechanism to switch the separating piece from the first state to the second state.

3. The assembly of claim 2, wherein: The operating part performs a first movement to drive the driving part to perform a second movement to switch the separating piece from the first state to the second state.

4. The assembly of claim 3, wherein: The first movement comprises rotation; the second movement comprises rotation.

5. The assembly of claim 2, wherein: The package box comprises a shell, the receiving part is arranged in the shell, the shell further comprises a first side wall and a second side wall surrounding the receiving part, the first side wall and the second side wall have a gap therebetween, and the first side wall forms the operating part.

6. The assembly of claim 5, wherein: The operating part comprises a free end and a connecting end connected with the second side wall, the free end rotates around the joint of the connecting end and the second side wall to drive the driving part to move.

7. The assembly of claim 6, wherein: The rotation axis of the free end is perpendicular to the central symmetry plane of the longitudinal direction of the package box.

8. The assembly of claim 6, wherein: At least a part of the operating part is made of an elastic material, and the at least a part comprises the connecting end.

9. The assembly of claim 2, wherein: The extending directions of the operating part and the driving part are perpendicular to each other.

10. The assembly of claim 9, wherein: The shell of the package box is provided with an opening, and the opening is arranged opposite to the driving part.

11. The assembly of claim 1, wherein: The receiving part is provided with a guide surface for guiding the separating piece to be inserted into the receiving part along the guide surface.

12. The assembly of claim 1, wherein: The receiving part is further provided with a longitudinally extending abutting surface for limiting the separating piece.

13. The assembly of claim 12, wherein: The receiving part is further provided with a guide surface for guiding the separating piece to move into the receiving part along the guide surface; the abutting surface intersects with the guide surface and is arranged at an angle.

14. The assembly of claim 1, wherein: The receiving part has an open end and a closed end, the open end is used for inserting the separating piece into the receiving part, and the closed end limits the separating piece.

15. The assembly of claim 1, wherein: The surface of the receiving part is provided with a protruding part.

16. The assembly of claim 1, wherein: The clamping mechanism comprises a clamping part arranged on the separating piece and a clamping interface arranged on the surgical instrument; in the first state, the clamping part and the clamping interface are elastically matched; the operating piece drives the clamping part to disconnect the clamping part from the clamping interface, so as to switch the separating piece from the first state to the second state.

17. The assembly of claim 1, wherein: The package box is made of transparent material.

18. A surgical kit characterized in that The surgical kit comprises the surgical instrument and the assembly according to any one of claims 1 to 17, and the separating piece is used to be mounted to the surgical instrument to strip tissue.

19. The surgical sleeve of claim 18, wherein: The separate piece is detachably mounted with the surgical instrument through a cooperation mechanism, the cooperation mechanism comprises a plug-in part arranged on the separate piece and a plug-in channel arranged on the surgical instrument; the cooperation mechanism further comprises a clamping part arranged on the separate piece and a clamping interface arranged on the surgical instrument, when the clamping part and the plug-in part are inserted along the plug-in channel to the clamping part is clamped with the clamping interface, the separate piece is fixed on the surgical instrument.

20. The surgical sleeve of claim 19, wherein: A side wall of the plug-in channel is provided with a channel groove extending from the distal end to the proximal end, the operating piece comprises an operating part and a driving part, the driving part drives the clamping part to be separated from the surgical instrument, and the width of the driving part is less than the width of the channel groove.

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