Assembly for a surgical instrument and surgical kit

Abstract

The application provides an assembly and a surgical kit for a surgical instrument, the assembly comprising a separate piece and a packaging box, the separate piece being switched between a first state and a second state with the surgical instrument through a clamping mechanism, in the first state, the separate piece is connected with the surgical instrument; in the second state, the separate piece is separated from the surgical instrument; the packaging box comprises a receiving part for receiving the separate piece, and the packaging 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. The assembly of the application comprises a separate piece and a packaging box, the separate piece is used for peeling target tissue, and the operation of a doctor is more convenient. The packaging box not only provides packaging for the separate piece, but also serves as a dismounting tool of the separate piece relative to the surgical instrument, and the design is very ingenious.

Description

TECHNICAL FIELD

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

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

[0003] An anastomat suitable for surgical procedures is a surgical instrument that can simultaneously staple and cut excess tissue during wound closure. It is widely used in minimally invasive surgeries such as abdominal surgery, gynecology, pediatrics, and thoracic surgery for tissue resection and anastomosis. The anastomat enters the human body through the cannula of a puncture device precisely positioned at the surgical site, then makes a longitudinal incision in the tissue and applies a staple on the opposite side of the incision, thereby cutting and anastomosing the tissue, similar to a stapler. The anastomat includes an end effector comprising a cartridge seat for receiving a cartridge and an anvil seat. The anastomat also includes a cutting member operably supported relative to the cartridge seat. Once the surgeon determines that the end effector properly grasps the tissue and is in the closed position, the anastomat can be fired to cut and staple the tissue.

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

[0005] When the surgeon operates the existing surgical instrument, if the target tissue needs to be cut and stapled, the surgeon 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 surgical instrument is forced in the direction of the distal end, so that the distal end of the end effector separates the target tissue first, and then the target tissue is located between the anvil seat 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 operation of the surgeon using the end effector of the surgical instrument to separate the target tissue is time-consuming and laborious. SUMMARY

[0007] In view of the deficiencies of the prior art, the present application aims to provide an assembly for a surgical instrument, the assembly comprising a separating element for separating a target tissue and a packaging box for accommodating the separating element.

[0008] The application realizes the technical scheme as follows: a component for a surgical instrument, the component comprising a separate piece and a package box, the separate piece and the surgical instrument being 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.

[0009] 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.

[0010] Further, the operating part performs a first motion to drive the driving part to perform a second motion so that the separate piece is switched from the first state to the second state.

[0011] Further, the first motion comprises rotation, and the second motion comprises rotation.

[0012] 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.

[0013] 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.

[0014] Further, the rotation axis of the free end is perpendicular to the central symmetry plane of the longitudinal direction of the package box.

[0015] 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.

[0016] Further, the extension directions of the operating part and the driving part are perpendicular to each other.

[0017] Further, the package box comprises a shell, the shell is provided with an opening, and the opening is arranged opposite to the driving part.

[0018] 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.

[0019] Further, the receiving part is provided with a longitudinally extending abutting surface, and the abutting surface limits the separate piece.

[0020] 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.

[0021] Further, the accommodation portion has an open end and a closed end, the open end is used for inserting the separation piece into the accommodation portion, and the closed end limits the separation piece.

[0022] Further, the accommodation portion is provided with a protruding portion on the surface.

[0023] 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 be separated from the clamping port, so that the separation piece is switched from the first state to the second state.

[0024] Further, the packaging box is made of transparent material.

[0025] Compared with the prior art, the beneficial effects of the present application are that the assembly 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.

[0026] The present application also provides a surgical kit, which comprises a surgical instrument and the above-mentioned assembly.

[0027] The present application is realized by the following technical scheme: a surgical kit, which comprises the surgical instrument and the assembly 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.

[0028] 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 portion and the clamping port along the plug-in channel, the separation piece is fixed to the surgical instrument.

[0029] Further, the 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 portion and a driving portion, the driving portion drives the clamping portion to be separated from the surgical instrument, and the width of the driving portion is smaller than the width of the channel groove.

[0030] Compared with the prior art, the beneficial effects of the present invention are: the surgical kit includes the above components and surgical instruments, can meet the doctor's requirements for separating target tissues and cutting and suturing the target tissues, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a front view of the surgical instrument provided by the present invention;

[0032] Figure 2 is with Figure 1 The surgical instrument shown is a three-dimensional view of the anvil and the separation member, showing the front and part of the back respectively;

[0033] Figure 3 and Figure 4 yes Figure 2 a perspective view of the separated parts shown;

[0034] Figure 5 yes Figure 4 An exploded perspective view of the separated parts shown;

[0035] Figure 6 yes Figure 1 A partial perspective view of the anvil of the surgical instrument shown;

[0036] Figure 7 and Figure 8 It is a three-dimensional diagram of the combination of the anvil, the separator, and the packaging box;

[0037] Figure 9 and Figure 10 yes Figure 8 an exploded perspective view of the assembly shown;

[0038] Figure 11 yes Figure 10 A perspective view of the packaging box shown;

[0039] Figure 12 and Figure 13 yes Figure 7 The cross-section along the longitudinal direction, Figures 12 to 13 The state change of shows the state change process of disassembling the separated parts using the packaging box;

[0040] Figure 14 yes Figure 12 Enlarged view of part A;

[0041] Figure 15 yes Figure 12 Enlarged view of part B;

[0042] Figure 16 is a perspective view of a separator provided in a second embodiment of the present invention; Figure 17 yes Figure 16An exploded perspective view of the separated parts shown;

[0043] Figure 18 is a perspective exploded view of a separation member provided in a third embodiment of the present invention;

[0044] Figure 19 is a perspective view of a separator provided in a fourth embodiment of the present invention;

[0045] Figure 20 yes Figure 19 An exploded perspective view of the separated parts shown;

[0046] Figure 21 is a perspective view of a separator provided in a fifth embodiment of the present invention mounted to an anvil;

[0047] Figure 22 yes Figure 21 a perspective view of the separated parts shown;

[0048] Figure 23 is a perspective view of a separator provided by a sixth embodiment of the present invention mounted to an anvil;

[0049] Figure 24 and Figure 25 yes Figure 23 3D exploded view of

[0050] Figure 26 yes Figure 23 a perspective view of the separated parts shown;

[0051] Figure 27 is a perspective view of a separator provided by a seventh embodiment of the present invention mounted to an anvil;

[0052] Figure 28 yes Figure 27 a perspective view of the separated parts shown;

[0053] Figure 29 yes Figure 28 An exploded perspective view of the separated parts is shown. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is 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 invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0055] The terms "proximal," "rear" and "distal," "front" are used with reference to a clinician who is manipulating the handle assembly of the surgical instrument. The terms "proximal," "rear" refer to portions of the device closer toward the clinician and the terms "distal," "front" refer to portions of the device further away from the clinician. For example, the handle assembly is proximal and rearward, while the end effector is distal and forward; the proximal end of a component is the end closer to the handle assembly, while the distal end is the end closer to the end effector. In the present disclosure, the relative positions of the components of the separable implement are defined with reference to the separable implement installed on the surgical instrument. The terms "upper," "lower" are defined with reference to the relative positions of the anvil and the staple cartridge seats of the end effector, specifically, the anvil is "upper" and the staple cartridge seat is "lower."

[0056] "Longitudinal" is defined as the direction from the distal end to the proximal end or from the proximal end to the distal end. The "longitudinal" of the separable implement is defined with reference to the separable implement installed on the surgical instrument. The "longitudinal" of the package is defined with reference to the separable implement installed on the package, i.e., the longitudinal of the package is parallel to the longitudinal of the separable implement. In addition, a component is "longitudinally elongated" if the length of the component is greater than its width, e.g., the component is generally elongated, but it is to be understood that "longitudinally elongated" does not limit the specific shape or orientation of the component.

[0057] The side surface of the separable implement closer 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 separable implement is in operation, the concave surface of the working portion is closer 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.

[0058] It is to 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, and therefore these terms expressing relative positional relationship are not limited and absolute. "Longitudinal" is also defined for the convenience of description. In the present disclosure, the above definitions shall follow the explicit provisions and limitations if there are any.

[0059] In the present disclosure, unless otherwise explicitly provided and limited, the terms such as "connected" shall be understood broadly, for example, it can be fixed connection, or detachable connection, or movable connection, or integral; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements, or interaction relationship of two elements. "Connection" does not include integral, and the meaning of "connection" is the same as "connected" except for this. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0060] Figure 1 The surgical instrument 100 in the present application is shown.

[0061] 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. It is conceivable to those skilled in the art that the surgical instrument can also be a manual stapler, and any solution identical or similar to the present embodiment is covered by the protection scope of the present application.

[0062] 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).

[0063] The shaft assembly 14 comprises a sleeve 20 and a mandrel (not shown) accommodated in the sleeve 20. The housing 16 is provided with a motor and a transmission mechanism, and the motor drives the end effector 18 and the cutting member through the transmission mechanism. The end effector 18 comprises a cartridge seat 28 for operably supporting a cartridge assembly (not shown) therein and a anvil seat 30 rotatably connected to the cartridge seat 28, and the anvil seat 30 is selectively movable between an open position and a closed position to clamp or release tissue. The cutting member is arranged in the end effector 18 for cutting tissue, and the cartridge assembly is used for suturing tissue.

[0064] The transmission mechanism comprises an end effector driving device for driving the anvil seat 30 of the end effector 18 to rotate relative to the cartridge seat 28 and selectively move between the closed position and the open position. Generally, the end effector driving device comprises a gear, a cam, and the sleeve 20, the gear drives the linear motion of the sleeve 20 through the conversion of the cam, and the linear motion of the sleeve 20 drives the rotation of the anvil seat 30 through the conversion mechanism. The specific structure of the end effector driving device is the same as or similar to the prior art, and will not be described in detail.

[0065] The transmission mechanism further comprises a cutting member driving device, which generally comprises a gear, a rack, and a mandrel, the gear rotates to drive the linear motion of the rack, the mandrel, and the cutting member, so that the cutting member can cut tissue. The specific structure of the cutting member driving device is the same as or similar to the prior art, and will not be described in detail.

[0066] When the surgical instrument is in use, first, the end effector driving device drives the sleeve 20 and then drives the anvil 30 to rotate and cooperate with the cartridge seat 28 to clamp the target tissue; then, the motor is started and rotates forward, the cutting member driving device drives the cutting member to advance through the mandrel, the cutting member moves from the initial position to the terminal position in the end effector 18 of the surgical instrument, and the cutting member synchronously pushes the pusher block in the cartridge to move from the initial position to the terminal position, so as to achieve the effect of cutting the excess tissue while suturing the cut tissue; then, the motor reverses, the cutting member driving device drives the cutting member to retreat to the initial position through the mandrel; then, the end effector driving device drives the sleeve 20 and then drives the anvil 30 to open to release the tissue; finally, the end effector driving device drives the sleeve 20 to drive the anvil 30 to close. Of course, before and after the surgical instrument is used, the anvil 30 needs to be closed relative to the cartridge seat 28, so that the end effector 18 extends into or out of the patient's body through the trocar sleeve, which will not be described hereinafter.

[0067] Figures 2 to 15 The separation piece of the first embodiment of the application is shown, which is used in cooperation with the surgical instrument 100.

[0068] Please refer to Figure 1 and Figure 2 , the embodiment also provides a separation piece 200 used in cooperation with the surgical instrument 100, which is used to separate the target tissue from other tissues, and specifically, the separation piece 200 is used to separate the target tissue from other tissues, so as to facilitate the surgical instrument 100 to cut and suture the target tissue. For example, the doctor first uses the separation piece 200 to separate the blood vessel from other tissues, and then uses the surgical instrument 100 to cut and suture the separated blood vessel.

[0069] The separation piece 200 is detachably connected with the surgical instrument 100. That is, the separation piece 200 is switched between the first state and the second state, in the first state, the separation piece 200 is connected with the surgical instrument 100; in the second state, the separation piece 200 is disconnected with the surgical instrument 100.

[0070] Therefore, when the separation piece 200 is needed to be used, the doctor connects the separation piece 200 with the surgical instrument 100, the doctor first separates the target tissue from other tissues by using the separation piece 200, and then the doctor moves the surgical instrument 100 forward to make the target tissue enter between the cartridge seat 28 and the anvil 30, and operates the surgical instrument 100 to cut and suture the target tissue. When the separation piece 200 is not needed to be used, the doctor switches the separation piece 200 from the first state to the second state, and the separation piece 200 is disconnected with the surgical instrument 100, so as to avoid that the separation piece 200 occupies the operation space and affects the convenience of the surgical instrument 100 to cut and suture other tissues.

[0071] Specifically, the separating 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 the tissue, and the separating 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.

[0072] More specifically, the separating piece 200 is detachably connected with the anvil 30 of the end effector 18. Since the anvil 30 of the existing surgical instrument 100 is not installed with other components such as a cartridge, the separating piece 200 is detachably connected with the anvil 30, which rationally utilizes the anvil 30 without affecting the installation and disassembly of other components (such as the cartridge), and the design is more reasonable. More specifically, the separating piece 200 is detachably connected with the distal end of the anvil 30, which more conforms to the operation habit of the doctor and facilitates the operation of the doctor.

[0073] Please refer to Figures 3 to 5 The separating piece 200 comprises a mounting part 220 and a working part 230. The mounting part 220 is detachably connected with the surgical instrument 100, specifically, the distal end of the anvil 30 of the end effector 18. The working part 230 is used for stripping the tissue.

[0074] The mounting part 220 is detachably connected with the surgical instrument 100 through a cooperation mechanism. The cooperation mechanism comprises a plug-in mechanism and a clamping mechanism. The plug-in mechanism comprises a plug-in part 222 provided on the separating piece 200 and a plug-in passage 50 provided on the surgical instrument 100. The clamping mechanism comprises a clamping part 240 provided on the separating piece 200 and a clamping port 60 provided on the surgical instrument 100. The plug-in passage 50 and the clamping port 60 are in communication, specifically, the clamping port 60 communicates with the proximal end of the plug-in passage 50 and penetrates the side wall of the plug-in passage. When the separating piece 200 is installed, the plug-in part 222 and the clamping part 240 are inserted into the surgical instrument 100 along the plug-in passage 50, and after a certain stroke, the clamping part 240 is clamped into the clamping port 60, and the separating piece 200 is fixed to the surgical instrument 100. In this way, the mounting part 220 of the separating piece 200 and the surgical instrument 100 are detachably connected through plug-in and clamping, which is reliable in installation and convenient in disassembly.

[0075] The mounting part 220 comprises the plug-in part 222 and the clamping part 240 connected with each other. The clamping part 240 is elastically matched with the surgical instrument 100. That is, the clamping part 240 is connected with the surgical instrument 100 under the action of the elasticity, and is separated from the surgical instrument 100 by overcoming the action of the elasticity, which is reliable in connection and convenient in disassembly. The source of the elasticity can be the elasticity of the clamping part 240 itself; or the other elastic body abuts against the clamping part 240, and the other elastic body provides the elastic force for the clamping part 240.

[0076] Specifically, the clamping portion 240 is elastically fitted with the clamping interface 60. That is, the clamping portion 240 is clamped into the clamping interface 60 under the action of elasticity, so that the separating piece 200 is fixed to the surgical instrument 100. The clamping portion 240 can be separated from the clamping interface 60 by overcoming the action of elasticity, so that the separating piece 200 is separated from the surgical instrument 100.

[0077] The clamping portion 240 has a first end 241 connected with the insertion portion 222 and a second end 242 elastically fitted with the surgical instrument 100. Specifically, the second end 242 rotates around the first end 241, so that the separating 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 the embodiment, the rotation axis of the second end 242 is perpendicular to the central symmetry plane of the longitudinal direction of the separating piece 200. In the 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.

[0078] Specifically, the first end 241 includes a rotating shaft 243, the insertion portion 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 portion 240 rotate, and finally make the separating piece 200 detachably connected with the surgical instrument 100. The rotation axis is the central axis of the rotating shaft 243.

[0079] 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 separating piece 200, so that the structure of the separating piece 200 is more compact.

[0080] The first end 241 of the clamping portion 240 is installed on the first side surface 229 of the insertion portion 222. It should be noted that the first side surface 229 refers to the surface on the back side of the insertion portion 222, and this surface is not limited to the plane area indicated by the reference number 229. The second end 242 of the clamping portion 240 protrudes from the second side surface 227 of the insertion portion 222. It should be noted that the second side surface 227 refers to the surface on the front side of the insertion portion 222, and this surface is not limited to the plane area indicated by the reference number 227. The insertion portion 222 is provided with an opening 228 penetrating through 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.

[0081] Thus, the opening 228 provides a space for the movement stroke of the second end 242 of the clamping portion 240, that is, the thickness of the insertion portion 222 itself provides a space for the movement stroke of the second end 242 of the clamping portion 240, which is not only reliable in structure, but also can reduce the size of the separation piece 200, and is very reasonable in structural design.

[0082] The second end 242 of the clamping portion 240 is elastically matched with the clamping interface 60 on the surgical instrument 100. In the embodiment, the clamping portion 240 itself does not have elasticity, and the separation piece 200 further comprises a supporting portion 250 abutting against the clamping portion 240, which elastically supports the clamping portion 240. The supporting portion 250 is at least partially made of elastic material, and the supporting portion 250 provides elastic force for the clamping portion 240. That is, the clamping portion 240 only needs to realize the function of matching or disengaging with the surgical instrument 100, and the supporting portion 250 only needs to realize the function of providing elastic force, the clamping portion 240 and the supporting portion 250 each perform their own functions, which can reduce the process requirements for the clamping portion 240 and the supporting portion 250, and is more in line with the mass production requirements.

[0083] In order to apply a force to the clamping portion 240 towards the second side surface 227, so that the clamping portion 240 is kept in the clamping interface 60 without external force, thereby keeping in the first state connected with the surgical instrument 100, the supporting 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.

[0084] Specifically, the supporting portion 250 has a first portion 251 and a second portion 252 connected with each other, the first portion 251 is connected with the first side surface 229, and the second portion 252 abuts against the clamping portion 240 to provide elastic force for the clamping portion 240 to have a tendency to be clamped into the clamping interface 60.

[0085] In order to reliably fix the supporting portion 250 on the separation piece 200, the mounting portion 220 is provided with a connecting portion 260, and the supporting 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 modes can also be adopted according to the materials of the supporting portion 250 and the mounting portion 220.

[0086] As described above, the shaft hole 224 in which the rotating shaft 243 is mounted is partially open, in order to avoid the rotating shaft 243 from falling off from the open shaft hole 224, the supporting 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 supporting portion 250 is fixed on the connecting portion 260, thus the supporting portion 250 extending from the distal end towards the proximal end can naturally cover the shaft hole 224, and the structural design is very reasonable.

[0087] As can be seen, the position of one part of the rotating shaft 243 is defined by the shaft hole 224, and the position of the other part is defined by the supporting part 250. By stacking the supporting part 250 on the fully enclosed shaft hole 224, the size of the separating piece 200 can be obviously reduced, and the structure of the separating piece 200 is more compact.

[0088] It should be emphasized that the present application is committed to reducing the size of the separating piece 200 in many aspects, although these designs may not be visible to the naked eye (for example, less than 1 mm), but they are crucial to the size of the separating piece 200, because: the end effector 18 of the surgical instrument 100 and the separating piece 200 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 (for example, 5mm\10mm\12mm\15mm), and the width of the end effector 18 and the separating 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 when designing the end effector 18 and the separating piece 200.

[0089] As described above, the first end 241 of the clamping part 240 is installed on the first side surface 229 of the insertion part 222, and the first part 251 of the supporting part 250 is connected with the first side surface 229. In order to better arrange the clamping part 240 and the supporting part 250, the first side surface 229 of the insertion part 222 is inwardly recessed to form a receiving space 226, that is, the insertion part 222 of the mounting part 220 is provided with the receiving space 226, and part of the clamping part 240 is accommodated in the receiving space 226. The receiving space 226 includes an opening 228 extending through the insertion part 222, and the second end 240 of the clamping part 240 protrudes from the opening 228 to be clamped with the clamping interface 60 in the first state. When the separating piece 200 is in the first state, part of the clamping part 240 is accommodated in the receiving space 226. Preferably, when the separating piece 200 is in the first state, part of the supporting part 250 is also accommodated in the receiving space 226.

[0090] Since the receiving space 226 can accommodate at least part of the clamping part 240, and even accommodate at least part of the supporting part 250, the clamping part 240 and the supporting part 250 are prevented from protruding out of the first side surface 229 of the insertion part 222, the space of the insertion part 222 itself is reasonably utilized, the size of the insertion part 222 can be reduced, and the structure of the insertion part 222 is more regular. The receiving space 226 accommodates part of the clamping part 240, which also limits the clamping part 240; and the second end 242 of the clamping part 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 part 250 is accommodated in the receiving space 226, which can also prevent the supporting part from interfering with the insertion channel when the insertion part is inserted into the insertion channel.

[0091] In this embodiment, the plug-in portion 222 and the clamping portion 240 are not elastic by themselves, and the separating piece 200 further comprises an elastic body abutting against the clamping portion 240, the elastic body abutting against the clamping portion 240 to elastically support the clamping portion 240. The elastic body is a support portion 250, the support portion 250 is made of at least partially elastic material, and the support portion 250 provides elastic force for the clamping portion 240. It is conceivable to those skilled in the art that the clamping portion 240 can also be elastic by itself, and any solution identical or similar to this embodiment is covered by the protection scope of the present application.

[0092] In this embodiment, no other elastic body is provided between the support portion 250 and the clamping portion 240, and the support portion 250 only provides elastic force for the clamping portion 240, that is, the elastic body abutting against the clamping portion 240 and elastically supporting the clamping portion 240 only comprises the support portion 250. It is conceivable to those skilled in the art that, on the basis of the support portion 250, another elastic body, for example, a second elastic body, is provided 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 provided, and other elastic body can also provide elastic force for the clamping portion 240, and any solution identical or similar to this embodiment is covered by the protection scope of the present application.

[0093] The second end 242 of the clamping portion 240 comprises a clamping surface 244 and an inclined surface 246 arranged at an angle with the clamping surface 244. As shown in Figure 3 , the clamping surface 244 extends vertically, as shown in Figure 2 , Figure 3 , Figure 6 , the clamping surface 244 abuts against the side wall of the clamping port 60 to prevent the separating piece 200 from falling off the surgical instrument 100. As shown in Figure 3 , the inclined surface 246 extends upward from the proximal end to the distal end, where 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 plug-in channel 50, so that the plug-in portion 222 and the clamping portion 240 of the separating piece 200 can be more smoothly inserted into the plug-in channel 50 from the distal end to the proximal end.

[0094] The second end 242 of the clamping portion 240 further comprises 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.

[0095] It should be noted that in the present embodiment, the clamping portion 240 is integrally formed. Those skilled in the art can conceive that the parts of the clamping portion 240 can be separately formed and connected by a specific connection method. Any solution that is the same as or similar to the present embodiment is covered by the protection scope of the present application.

[0096] As described above, the mounting portion 220 of the separation piece 200 includes a plug-in portion 222 that mounts the clamping portion 240. Please refer to the following description in combination with Figures 4 to 6 The plug-in portion 222 extends longitudinally. Correspondingly, the plug-in channel 50 extends from the distal end face of the surgical instrument 100 in the direction toward the proximal end, specifically, the plug-in channel 50 extends from the distal end face of the anvil seat 30 in the direction toward the proximal end.

[0097] As known by those skilled in the art, the anvil seat 30 is provided with a longitudinally extending knife groove 33 that accommodates and guides the movement of the partial cutting member of the surgical instrument 100. The knife groove 33 is arranged at the central position of the anvil seat 30 and extends longitudinally. The plug-in channel 50, the clamping port 60, and the knife groove 33 are coaxially arranged and communicate with each other, and the structure is regular.

[0098] The clamping port 60 communicates with the proximal end of the plug-in channel 50 and penetrates the side wall of the plug-in channel 50. Specifically, the clamping port 60 penetrates the side wall of the anvil face 31 of the anvil seat 30.

[0099] Therefore, when the separation piece 200 needs to be mounted to the surgical instrument 100, the plug-in portion 222 of the separation piece 200 is aligned with the plug-in channel 50, and the separation piece 200 is pushed in the direction from the distal end toward the proximal end. During the pushing process, the plug-in channel 50 abuts against the inclined surface 246 of the second end 242 of the clamping portion 240, so that the clamping portion 240 rotates against the elastic force provided by the supporting portion 250 until the second end 242 of the clamping portion 240 and the plug-in portion 222 are smoothly inserted into the plug-in channel 50. The separation 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 reversely rotates under the action of the elastic force provided by the supporting portion 250, the second end 242 protrudes from the second side surface 227 of the plug-in portion 222 and is clamped into the clamping port 60, and the separation piece 200 is mounted in place.

[0100] The side wall of the plug-in channel 50, specifically, the side wall of the plug-in channel 50 located at the anvil face 31 of the anvil seat 30 includes a first hollow portion 51 and a second hollow portion 52 that communicate 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.

[0101] 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.

[0102] 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.

[0103] The length of the second hollow part 52 is greater than that of the first hollow part 51. That is, during the movement of the clamping part 240 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, thereby prolonging the service life of the separating piece 200.

[0104] 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, thereby facilitating the doctor to operate the separating piece.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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 joint 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.

[0120] 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.

[0121] 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.

[0122] The slot 290 extends in the circumferential direction. This can make the mounting of the elastic member 280 more reliable.

[0123] 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.

[0124] 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.

[0125] 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 by the protection scope of the present application.

[0126] Please refer to Figures 7 to 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 way of selling and purchasing, the needs of doctors to strip target tissues can be met. Of course, the separating member 200 of the present embodiment can also be sold and purchased separately.

[0127] 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 loading of the separating member 200 into the packaging box 300 or the removal of the separating member 200 from the packaging box 300.

[0128] 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.

[0129] 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.

[0130] The protruding rib 324 is also provided with an abutting surface 328, which intersects 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 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.

[0131] 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.

[0132] Please refer to Figure 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 easy. In the present 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.

[0133] As described above, the separation piece 200 includes a resilient piece 280 which abuts 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 the inner surface of the accommodation portion 320.

[0134] 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 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 the inner surface of the accommodation portion 320 further provides feedback to 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 out of the accommodation portion 320.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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, and 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.

[0141] The operation part 342 rotates to drive the driving part 348 to rotate. Specifically, the first side wall 351 includes a connecting end 344 and a free end 346, and the driving part 348 is connected to the free end 346. 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 additional components, the structure is simple and convenient to operate.

[0142] 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 separating piece 200 and the packaging box 300 is regular.

[0143] 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 separating 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 Figure 8 、 Figure 11 、 Figure 12

[0144] 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, so that the separating piece 200 can be smoothly separated from the surgical instrument 100.

[0145] The operation part 342 and the driving part 348 are connected, and the two cooperate to complete the abutment of 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 the 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 think that the operation part 342 and the driving part 348 can also be integrally formed.

[0146] As shown in Figure 11 、 12 ​As shown, the housing 350 is provided with an opening 354 through which the driving portion 348 passes. The opening 354 is arranged opposite the driving portion 348, so that when the driving portion 348 is installed, the driving portion 348 passes through the opening 354 and is connected to the operating portion 342, and the opening 354 facilitates the installation of a tool to exert force on the driving portion 348, and the structure design is reasonable. The driving portion 348 is connected to the free end 346 of the operating portion 342, and correspondingly, the opening 354 is opposite the free end 346 of the operating portion 342, and the layout is reasonable.

[0147] The width of the driving portion 348 is less than the width of the channel groove (including the second hollow portion 52, the first hollow portion 51, and the clamping port 60) on the nail abutment 30. During the disengagement of the separating piece 200 from the surgical instrument 100, the driving portion 348 can move in the channel groove and maintain the state of pressing the second end 242 of the clamping portion 240.

[0148] Therefore, the operating member 340 acts on the clamping mechanism to switch the separating piece 200 from the first state to the second state.

[0149] 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 moves towards the surgical instrument 100, and the closed end 330 pushes the separating piece 200 to insert 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.

[0150] The packaging box 300 is made of transparent material, which not only looks beautiful, but also is very convenient for the operator to observe whether the disassembly operation is in place when disassembling the separating piece 200 by using the packaging box 300.

[0151] The application scenarios of the separating piece 200 of the present embodiment are described below.

[0152] 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 member 280 on the separating piece 200 elastically abuts 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 member 280.

[0153] When the physician needs to use the dissection member 200 to dissect tissue during use of the surgical instrument 100, the physician holds the housing 350 of the package 300 so that the mounting portion 220 of the dissection member 200 is aligned with the insertion channel 50 provided on the anvil 30 of the end effector 18 of the surgical instrument 100, and pushes the package 300 in a direction towards the surgical instrument 100. During the pushing, the insertion portion 222 and the clamping portion 240 of the dissection member 200 move along the insertion channel 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 dissection member 200 has been mounted to the surgical instrument 100.

[0154] Subsequently, the physician overcomes the friction between the elastic member 280 and the inner side surface of the receiving portion 320 due to the elastic force of the elastic member 280, and pulls the package 300 in a direction away from the surgical instrument 100, so that the package 300 is detached from the dissection member 200. The physician can use the dissection member 200 to dissect the target tissue. Specifically, the distal end 232 of the working portion 230 of the dissection member 200, which has a relatively narrow width, is aligned with the interface between the target tissue and other tissue, and the surgical instrument 100 and the dissection member 200 are pushed forward until the dissection member 200 dissects the target tissue from the other tissue.

[0155] After the dissection member 200 dissects the target tissue from the other tissue, the physician moves the surgical instrument 100 in a direction towards the distal end 232, so that the target tissue enters between the anvil 30 and the cartridge seat. Subsequently, the physician can use the surgical instrument 100 to cut and suture the target tissue.

[0156] When the doctor does not need to separate the tissue during the use of the surgical instrument 100, the doctor can remove the separating piece 200 from the surgical instrument 100, so as to avoid the space occupation of the separating piece 200 and affect the other operations of the surgical instrument 100 in the case that the separating piece 200 is not needed. Specifically, the doctor moves the packaging box 300 to align the separating piece 200, so as to accommodate the separating piece 200 in the accommodating portion 320 of the packaging box 300. Then, the doctor presses the free end 346 of the operation portion 342, and 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. The doctor continues to press the free end 346 of the operation portion 342, and 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. Then, the doctor pulls the packaging box 300 away from the surgical instrument 100, so that the inserting portion 222 of the separating piece 200 is separated from the inserting channel 50, and the separating piece 200 is separated from the surgical instrument 100. The separating piece 200 after being separated from the surgical instrument 100 is located in the accommodating portion 320 of the packaging box 300, and returns to the state before being used. 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 keeps pressing the second end 242 of the clamping portion 240. That is, during the process that the separating piece 200 is separated from the surgical instrument 100, the driving portion 348 always presses the second end 242 of the clamping portion 240 and applies force to the second end 242. The driving portion 348 moves in the channel groove, and finally separates the separating piece 200 from the surgical instrument 100 by means of the packaging box 300.

[0157] Figures 16 to 17 The separating piece 200a for cooperating with the surgical instrument is shown in the second embodiment of the present application.

[0158] The difference between the separating piece 200a of the present embodiment and the separating piece of the first embodiment will be described below.

[0159] In the first embodiment, the elastic member extends circumferentially in a ring shape, and the ring-shaped elastic member is installed in the slot between the separating piece and the distal end surface of the anvil.

[0160] In the present embodiment, the elastic member 280a is in a bag shape, and at least a part of the working portion 230a is accommodated in the elastic member 280a. The shape of the at least a part of the working portion 230a is the same as that of 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 mounting 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 mounting end, so as to avoid scratching the tissue by the distal end surface of the mounting end.

[0161] Figure 18A separate piece for use with a surgical instrument according to a third embodiment of the present application is shown.

[0162] The difference between the separate piece 200b of the present embodiment and the separate piece of the first embodiment is described below.

[0163] In the first embodiment, the first end of the clamping portion includes a pivot, which is integrally formed with the rest of the clamping portion, the insertion portion is provided with an open shaft hole, the pivot is received 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 about the pivot.

[0164] In the present embodiment, the separate piece 200b includes a separate pivot 234b, the first end of the clamping portion 240b is provided with a pin hole 299b through which the pivot 234b passes, and the mounting portion of the separate piece 200b is provided with two round holes 298b corresponding to the two ends of the pin hole 299b, the pivot 234b passes through the first round hole 298b, the pin hole 299b, and the second round hole 298b in sequence, so that the first end of the clamping portion 240b is rotatably mounted on the mounting portion. The pivot 234b is tightly fitted with the first round hole 298b and / or the second round hole 298b to prevent it from falling off.

[0165] In addition, in the present embodiment, the shape of the elastic member 280b of the separate piece 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.

[0166] Figures 19 to 20 A separate piece for use with a surgical instrument according to a fourth embodiment of the present application is shown.

[0167] The difference between the separate piece 200c of the present embodiment and the separate piece of the third embodiment is described below.

[0168] In the third embodiment, the mounting portion of the separate piece is provided with a connecting portion at the distal side adjacent to the first end of the clamping portion, the first part of the support portion is connected with the connecting portion, the support portion extends from the connecting portion toward the proximal end, and the support portion exerts a force on the clamping portion relative to the second part located at the proximal end, so that the clamping portion has a tendency to be clamped into the clamping port of the surgical instrument.

[0169] In the present embodiment, the support portion 250c is located close to the proximal end of the clamping portion 240c, the proximal end of the support portion 250c is connected with the mounting portion 220c by welding or the like, the support portion 250c is elastic, and the distal end of the support portion 250c exerts a force on the second end of the clamping portion 240c, so that the clamping portion 240c has a tendency to be clamped into the clamping port 60c of the surgical instrument.

[0170] Figures 21 to 22 A separate piece for use with a surgical instrument according to a fifth embodiment of the present application is shown.

[0171] The difference between the separating piece 200d of the present embodiment and the separating piece of the second embodiment will be described below.

[0172] In the second embodiment, the clamping portion itself is not elastic, and the supporting portion provides elastic force to the clamping portion so that the clamping portion has a tendency to be clamped into the clamping port of the surgical instrument.

[0173] 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 arranged to provide elastic force to the clamping portion 240d, and the structure is simpler.

[0174] In the present embodiment, the proximal end of the clamping portion 240d is connected to the mounting portion 220d of the separating piece 200d, the clamping portion 240d is deformed, 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 separating piece 200d is switched between the first state and the second state. It should be noted that no additional rotating shaft is arranged at the proximal end, and the distal end rotates around the connection between the proximal end and the mounting portion 220d.

[0175] As can be seen, the structure of the separating piece 200d of the present embodiment is simpler, and the cost is lower.

[0176] Figures 23 to 26 A separating piece for use with a surgical instrument provided by a sixth embodiment of the present application is shown.

[0177] The difference between the separating piece 200e of the present embodiment and the separating piece of the fifth embodiment will be described below.

[0178] In the fifth embodiment, the clamping portion is arranged on the front surface (the second side surface) of the mounting portion of the separating piece, and the clamping portion cooperates with the clamping port arranged on the surgical instrument.

[0179] In the present embodiment, the clamping portion 240e is arranged on the back surface of the mounting portion 220e of the separating piece 200e, the clamping port 60e is arranged on the back surface 32e of the anvil seat 30e, and the clamping portion 240e arranged on the back surface of the mounting portion 220e cooperates with the clamping port 60e arranged on the back surface 32e of the anvil seat 30e, so as to achieve detachable connection between the separating piece 200e and the surgical instrument.

[0180] Since the clamping port 60e is arranged on the back surface 32e of the anvil seat 30e and is not affected by the cartridge seat, the operating member of the packaging box can be operated on the back surface 32e of the anvil seat 30e to achieve mounting and dismounting of the separating piece 200e. The operation space is larger, and the operation is more convenient.

[0181] The distal end of the clamping portion 240e is connected to the separation piece 200e by welding or the like, and the clamping portion 240e itself has elasticity, thereby realizing switching between the first state and the second state, which will not be described again.

[0182] Figures 27 to 29 The separation piece used in cooperation with the surgical instrument according to the seventh embodiment of the present application is shown.

[0183] The difference between the separation piece 200f of the present embodiment and the separation piece of the fifth embodiment will be mainly described below.

[0184] In the fifth embodiment, the proximal end of the clamping portion is fixed to the mounting portion of the separation piece, and the distal end of the clamping portion is fitted to the clamping interface of the surgical instrument.

[0185] In the present embodiment, the distal end of the clamping portion 240f is fixed to the portion of the separation piece 200f other than the clamping portion 240f, and the proximal end of the clamping portion 240f is fitted to the clamping interface of the surgical instrument.

[0186] In the present embodiment, the separation 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, and 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 and the mounting shaft 296f cooperate to realize the fitting of the distal end of the clamping portion 240f to the separation piece 200f. The proximal end of the clamping portion 240f can rotate relative to the distal end to realize the clamping and disengagement of the clamping interface.

[0187] It should be noted that, in the present embodiment, although the mounting shaft 296f is a cylindrical shaft and the mounting hole is a circular hole, the clamping portion 240f does not rotate around the axis of the mounting shaft 296f. The rotation axis of the clamping portion 240f is parallel to the working surface of the separation piece 200f, as in the foregoing embodiments.

[0188] In summary, in the present application, the doctor first uses the separation piece to separate the target tissue from other tissues, and then moves the surgical instrument forward to make the target tissue enter between the staple cartridge seat and the anvil seat, and operates the surgical instrument to cut and suture the target tissue. The use of the separation piece to separate the target tissue makes the operation of the doctor more convenient; and the clamping mechanism enables the separation piece to be elastically fitted to the surgical instrument, which is reliable in connection and convenient in disassembly.

[0189] In the present application, the elastic body abuts against the end face of the mounting end, which can maximize the risk of scratching the tissue by the distal end face of the mounting end and minimizing the risk of the tissue being clamped in the gap between the distal end face of the mounting end and the separation piece.

[0190] The packaging box can not only provide packaging for the separated parts, but also can be used as a dismounting tool for the separated parts relative to the surgical instrument, and the design is very ingenious. In the application, the elastic body can not only avoid scratching the tissue, but also prevent the separated parts from accidentally falling off when the separated parts are stored in the packaging box.

[0191] It should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains 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 also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0192] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the present application, and are not used 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, comprising a separate component and a packaging box, characterized in that: The separator and the surgical instrument are switched between a first state and a second state through a snap-fit ​​mechanism, and the snap-fit ​​mechanism enables the separator to be elastically matched with the surgical instrument. In the first state, the separator is connected to the surgical instrument; in the second state, the separator is detached from the surgical instrument; the packaging box includes a receiving portion for receiving the separator, and the packaging box also includes an operating member, which drives the snap-fit ​​mechanism to switch the separator from the first state to the second state.

2. The assembly according to claim 1, characterized in that: The operating member includes an operating portion and a driving portion, wherein the operating portion is pressed by an operator, and the driving portion drives the engaging mechanism to switch the separating member from the first state to the second state.

3. The assembly according to claim 2, characterized in that: The operating portion performs a first movement to drive the driving portion to perform a second movement so as to switch the separating member from the first state to the second state.

4. The assembly according to claim 3, characterized in that: The first movement includes rotation; the second movement includes rotation.

5. The assembly according to claim 2, characterized in that: The packaging box includes a shell, the receiving portion is arranged in the shell, and the shell further includes a first side wall and a second side wall surrounding the receiving portion, a gap is provided between the first side wall and the second side wall, and the first side wall forms the operating portion.

6. The assembly according to claim 5, characterized in that: The operating portion includes a free end and a connecting end connected to the second side wall. The free end rotates around a junction between the connecting end and the second side wall to drive the driving portion to move.

7. The assembly according to claim 6, characterized in that: The rotation axis of the free end is perpendicular to the central symmetry plane in the longitudinal direction of the packaging box.

8. The assembly according to claim 6, characterized in that: At least a portion of the operating portion is made of an elastic material, and the at least a portion includes the connecting end.

9. The assembly according to claim 2, characterized in that: The operating portion and the driving portion extend in directions perpendicular to each other.

10. The assembly according to claim 9, characterized in that: The packaging box includes a shell, the shell is provided with an opening, and the opening is arranged opposite to the driving part.

11. The assembly according to claim 1, characterized in that: The receiving portion is provided with a guide surface, and the guide surface is used to guide the separating member to be inserted into the receiving portion along the guide surface.

12. The assembly according to claim 1, wherein: The receiving portion is provided with a longitudinally extending abutting surface, and the abutting surface limits the separating member.

13. The assembly according to claim 12, characterized in that: The receiving portion is further provided with a guide surface, and the guide surface is used to guide the separation member to move into the receiving portion along the guide surface; the abutting surface intersects with the guide surface and is arranged at an angle.

14. The assembly according to claim 1, characterized in that: The receiving portion has an open end and a closed end. The open end is used for the separator to be inserted into the receiving portion, and the closed end limits the separator.

15. The assembly according to claim 1, characterized in that: A protrusion is provided on the surface of the receiving portion.

16. The assembly according to claim 1, characterized in that: The clamping mechanism includes a clamping portion provided on the separating member and a clamping interface provided on the surgical instrument; in the first state, the clamping portion and the clamping interface are elastically matched; the operating member drives the clamping portion to disengage the clamping portion from the clamping interface, thereby switching the separating member from the first state to the second state.

17. The assembly according to claim 1, characterized in that: The packaging box is made of transparent material.

18. A surgical kit, characterized in that: The surgical kit comprises the surgical instrument according to any one of claims 1 to 17 and the assembly, wherein the separating piece is adapted to be mounted on the surgical instrument to peel off tissue.

19. The surgical kit according to claim 18, wherein: The separating piece and the surgical instrument are detachably mounted via a mating mechanism, wherein the mating mechanism comprises an inserting portion provided on the separating piece and an inserting channel provided on the surgical instrument; the mating mechanism further comprises a clamping portion provided on the separating piece and a clamping interface provided on the surgical instrument, and when the clamping portion and the inserting portion are inserted along the inserting channel until the clamping portion and the clamping interface are engaged, the separating piece is fixed to the surgical instrument.

20. The surgical kit of claim 19, wherein: The side wall of the insertion channel is provided with a channel groove extending from the distal end toward the proximal end. The operating member includes an operating part and a driving part. The driving part drives the clamping part to disengage from the surgical instrument. The width of the driving part is smaller than the width of the channel groove.

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