Separation member and surgical kit used in surgical tool

Abstract

To provide a separation member and a surgical kit used in a surgical tool that facilitate peeling of a target tissue.SOLUTION: A separation member includes connected attachment part and actuation part. The attachment part includes an engagement part. The engagement part and a surgical tool are elastically put together or separated from each other. The actuation part is used to peel a tissue. The engagement part is used to removably connect the attachment part of the separation member to the surgical tool. At least a part of the engagement part is made of an elastic material. The separation member is used to peel a target tissue.SELECTED DRAWING: Figure 27

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and particularly to a separating member used for surgical instruments and a surgical kit.

Background Art

[0002] A stapler applied in surgery is a surgical instrument that can suture a patient's wound and excise excess tissue, and is widely applied to the excision and anastomosis of tissues in minimally invasive surgeries such as abdominal surgery, gynecology, pediatrics, and thoracic surgery. The stapler enters the body through the sleeve of a puncture tool accurately positioned at the surgical site, then makes a longitudinal incision in the tissue, and applies staples to the opposite side of the incision to sever and anastomose the tissue, which is similar to a stapler. The stapler includes an end effector, the end effector includes a staple bin sheet and a staple resist sheet, the staple bin sheet is used to receive staple bins, the stapler further includes a cutting member, and the cutting member is operably supported with respect to the staple bin sheet. When the doctor determines that the end effector properly grips the tissue and is in the closed position, the stapler can be triggered to cut and suture the tissue.

[0003] During the surgical process, the doctor may need to cut and suture specific target tissues, but these target tissues are attached to other tissues. For example, the doctor may need to cut and suture a blood vessel, but the blood vessel is usually attached to other tissues. To cut and suture the blood vessel, the doctor needs to peel the blood vessel from other tissues, place the blood vessel between the staple resist sheet and the staple bin sheet, and finally cut and suture the blood vessel with the stapler.

[0004] When a doctor operates an existing surgical instrument and needs to cut and suture a specific target tissue, it is usually necessary to repeatedly adjust the angle of the surgical instrument, thereby aligning the distal end of the end effector with the target tissue, biasing the surgical instrument along the direction towards the distal end, separating the target tissue with the distal end of the end effector, and further positioning the target tissue between the staple resist sheet and the staple bin sheet to cut and suture the target tissue.

[0005] However, the design of the distal end of the existing end effector does not conform to the separation of the target tissue, and it takes time and effort for the doctor to use the end effector of the surgical instrument to separate the target tissue.

Summary of the Invention

Problems to be Solved by the Invention

[0006] In view of the deficiencies of the prior art, an object of the present invention is to provide a separation member and a surgical kit used for a surgical instrument.

Means for Solving the Problems

[0007] The present invention provides a separation member used for a surgical instrument, the separation member includes a connected mounting portion and an operating portion, the mounting portion includes an engaging portion, the operating portion is used for separating tissue, and the engaging portion and the surgical instrument are elastically engaged or disengaged, so that the mounting portion is removably connected to the surgical instrument, and at least a part of the engaging portion is made of an elastic material.

[0008] In a specific embodiment, the surgical instrument has an engaging opening. In the first state, the engaging portion is locked in the engaging opening under the action of an elastic force, thereby elastically fitting the separation member and the surgical instrument. In the second state, the engaging portion resists the action of the elastic force and disengages from the engaging opening, whereby the separation member is disengaged from the surgical instrument.

[0009] In a specific embodiment, the distal end of the engaging portion is fixed to a portion other than the engaging portion of the separating member, and by deforming the engaging portion, the proximal end of the engaging portion is fitted into or disengaged from the engaging opening of the surgical instrument.

[0010] In a specific embodiment, the separating member has a receiving cavity, the receiving cavity extends along the direction from the proximal end of the mounting portion toward the operating portion, the receiving cavity is partially located in the operating portion, a mounting shaft extending vertically is provided at the distal end of the receiving cavity, a mounting hole is provided in the engaging portion, and the mounting hole is fitted with the mounting shaft.

[0011] In a specific embodiment, the rotation axis of the engaging portion is parallel to the operating surface of the separating member.

[0012] In a specific embodiment, the proximal end of the engaging portion can rotate relative to the distal end of the engaging portion to achieve engagement with and disengagement from the engaging opening.

[0013] In a specific embodiment, the mounting shaft is a cylindrical shaft and the mounting hole is a circular hole.

[0014] The present invention further provides a surgical kit, which includes the separating member described above and a surgical instrument, the surgical instrument includes an end effector, and the separating member is removably connected to the end effector.

[0015] In a specific embodiment, the end effector includes a staple bin sheet and a staple resist sheet rotatably connected to the staple bin sheet. The staple bin sheet is used to operably support a staple bin assembly located therein, and the staple resist sheet can grip or loosen tissue by selectively moving between an open position and a closed position.

[0016] In a specific embodiment, the surgical kit further includes a packing box, the packing box includes a receiving portion for accommodating the separating member, the packing box further includes an operating member, and the operating member is configured to drive the separating member to be elastically fitted to or detached from the surgical instrument.

[0017] In a specific embodiment, the packing box further includes a housing, a surface on one side of the housing forms a receiving portion that is recessed inwardly and open, the receiving portion has an open end and a closed end provided at an interval from the open end, the separating member is configured to be loaded into or taken out of the packing box from the open end, and the closed end is configured to limit the distal end of the separating member.

[0018] Compared with the prior art, the present invention has the following beneficial effects. The mounting portion of the separating member and the surgical instrument realize a detachable connection by insertion and engagement, ensuring reliable mounting and easy removal.

Brief Description of the Drawings

[0019]

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BEST MODE FOR CARRYING OUT THE INVENTION

[0020] In order to more clearly clarify the object, technical solution and advantages of the present invention, the present invention will be described in more detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only for interpreting the present invention and do not limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0021] The terms "proximal", "rear", "distal" and "front" used in the present invention are with respect to a clinician who operates the handle assembly of a surgical instrument. The terms "proximal" and "rear" refer to the parts closer to the clinician, and the terms "distal" and "front" refer to the parts farther from the clinician. For example, the handle assembly is on the proximal side and the rear side, and the end effector is on the distal side and the front side. Further, for example, the proximal end of a component represents the end relatively close to the handle assembly, and the distal end represents the end relatively close to the end effector. In the present invention, the relative positional relationship of each member of the separating member, for example, the relationship of being relatively positioned at the "proximal" end or the "distal" end, refers to the state in which the separating member is attached to the surgical instrument. The terms "upper" and "lower" refer to the relative positions of the staple resist sheet and the staple bin sheet of the end effector. Specifically, the staple resist sheet is "above", and the staple bin sheet is "below".

[0022] The "longitudinal direction" is defined as the direction from far to near or from near to far. The "longitudinal direction" of the separation member is defined in a state where the separation member is attached to the surgical instrument. The "longitudinal direction" of the packaging box is defined in a state where the separation member is attached to the packaging box, that is, the longitudinal direction of the packaging box is parallel to the longitudinal direction of the separation member. Further, for a member to extend in the longitudinal direction means that the length of the member is greater than its width, for example, the whole is in an elongated shape. As can be understood, "extending in the longitudinal direction" does not limit the specific shape and installation position of the member.

[0023] The surface of the separation member closer to the target tissue is defined as the "front surface", and the surface farther from the target tissue is defined as the "back surface". Specifically, when the separation member operates, the concave surface of the operating part approaches the target tissue and can peel the target tissue from other tissues. The surface on the side where the concave surface is located is defined as the front surface, and the surface on the side where the convex surface is located is defined as the back surface.

[0024] As can be understood, these orientations such as "proximal", "distal", "rear", "front", "upper", "lower", "front surface", and "back surface" are defined for the convenience of explanation. However, since the surgical instrument can be used in many directions and positions, these terms for representing relative positional relationships are limited and not absolute. The "longitudinal direction" is also defined for the convenience of explanation. In the present invention, when there are other clear regulations and limitations, the above definitions should follow the above clear regulations and limitations.

[0025] In the present invention, unless there are specific clear regulations and limitations, terms such as "connection" should be understood in a broad sense. For example, it may be a fixed connection, a removable connection, a movable connection or an integration, a direct connection, an indirect connection through an intermediate medium, a communication inside two elements or an interaction relationship between two elements. "Connection" does not include integration, but the meaning of "connection" other than that is the same as "connection". A person skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

[0026] Figure 1 shows the surgical instrument 100 of the present invention.

[0027] Referring to Figure 1, the surgical instrument according to the present invention is a stapler, preferably an electric stapler. The surgical instrument 100 includes a main body 10 and a battery pack 12 removably attached to the main body 10. Those skilled in the art can conceive that the surgical instrument may be a manual stapler, and all solution means the same as or similar to the present embodiment are included within the protection scope of the present invention.

[0028] The main body 10 includes a rod assembly 14, a housing 16 provided at one end of the rod assembly 14, and an end effector 18 provided at the other end of the rod assembly 14. A cutting member (not shown) is provided in the end effector 18.

[0029] The rod assembly 14 includes a sleeve 20 and a mandrel (not shown) accommodated in the sleeve 20. A motor and a transmission mechanism are provided in the housing 16, and the motor drives the end effector 18 and the cutting member through the transmission mechanism. The end effector 18 includes a staple bin sheet 28 and a staple resist sheet 30 rotatably connected to the staple bin sheet 28. The staple bin sheet 28 is used to operably support a staple bin assembly (not shown) located therein. The staple resist sheet 30 can grip or loosen tissue by selectively moving between an open position and a closed position. The cutting member is provided in the end effector 18 and is used to cut tissue, and the staple bin assembly is used to suture tissue.

[0030] The transmission mechanism includes an end effector driving device. The end effector driving device drives the staple resist sheet 30 of the end effector 18 to rotate with respect to the staple bin sheet 28 and selectively move between a closed position and an open position. Usually, the driving device of the end effector 18 includes a gear, a cam, and a sleeve 20. The gear drives the sleeve 20 to move linearly by the conversion of the cam, and the sleeve 20 moves linearly to drive the staple resist sheet 30 to rotate by a conversion mechanism. Since the specific structure of the end effector driving device is the same as or similar to the prior art, detailed description is omitted here.

[0031] The transmission mechanism further includes a cutting member driving device. Usually, the cutting member driving device includes a gear, a rack, and a mandrel. The gear rotates to drive the rack, the mandrel, and the cutting member to move linearly, so that the cutting member can cut tissue. Since the specific structure of the cutting member driving device is the same as or similar to the prior art, detailed description is omitted here.

[0032] When the surgical instrument is used, first, the end effector drive device drives the sleeve 20, and further drives and rotates the staple resist sheet 30 to engage with the staple bin sheet 28 to grip the target tissue. Next, the motor starts and rotates forward, and the cutting member drive device drives the cutting member through the mandrel to feed. The cutting member moves from the initial position to the end position within the end effector 18 of the surgical instrument. The cutting member synchronously advances the staple pusher block in the staple bin from the initial position to the end position to cut the excess tissue and achieve the effect of suturing the cut tissue. Then, the motor rotates in reverse, and the cutting member drive device drives the cutting member through the mandrel to retract to the initial position. Further, thereafter, the end effector drive device drives the sleeve 20, and further drives the staple resist sheet 30 to open and loosen the tissue. Finally, the end effector drive device drives the sleeve 20 to drive the staple resist sheet 30 to close. Of course, before and after the use of the surgical instrument, it is necessary to close the staple resist sheet 30 against the staple bin sheet 28. Thereby, the end effector 18 is inserted into or removed from the patient's body through the sleeve of the puncture instrument, and the detailed description is omitted here.

[0033] Figures 2 to 15 show the separating member of the first embodiment of the present invention, and the separating member is used in combination with the surgical instrument 100.

[0034] Referring to FIGS. 1 and 2, the present embodiment further provides a separating member 200 used in combination with the surgical instrument 100. The separating member 200 is used for peeling tissue. Specifically, the separating member 200 is used for peeling the target tissue from other tissues, which facilitates the surgical instrument 100 to cut and suture the target tissue. For example, the doctor first peels the blood vessel from other tissues with the separating member 200, and then cuts and sutures the peeled blood vessel with the surgical instrument 100.

[0035] The separating member 200 is removably connected to the surgical instrument 100. That is, the separating member 200 can be switched between a first state and a second state. In the first state, the separating member 200 is connected to the surgical instrument 100, and in the second state, the separating member 200 is detached from the surgical instrument 100.

[0036] Thereby, when it is necessary to use the separating member 200, the doctor connects the separating member 200 and the surgical instrument 100. First, the doctor separates the target tissue from other tissues with the separating member 200. Next, the doctor moves the surgical instrument 100 forward so that the target tissue enters between the staple bin sheet 28 and the staple resist sheet 30, and then operates the surgical instrument 100 to cut and suture the target tissue. When it is not necessary to use the separating member 200, the doctor switches the separating member 200 from the first state to the second state, detaches the separating member 200 from the surgical instrument 100, and avoids the separating member 200 occupying the surgical space and affecting the convenience of the surgical instrument 100 for cutting and suturing other tissues.

[0037] Specifically, the separating member 200 is removably connected to the end effector 18 of the surgical instrument 100. The end effector 18 is an operating member of the surgical instrument 100 that directly contacts the tissue and cuts and sutures the tissue. The separating member 200 is removably connected to the end effector 18, which conforms to the doctor's operating habits and facilitates the doctor's operation.

[0038] More specifically, the separating member 200 is removably connected to the staple resist sheet 30 of the end effector 18. Since no other members such as staple bins are attached to the staple resist sheet 30 of the existing surgical instrument 100, the separating member 200 is removably connected to the staple resist sheet 30, rationally uses the staple resist sheet 30 without affecting the attachment and detachment of other members (such as staple bins), and the design is more reasonable. More specifically, the separating member 200 is removably connected to the distal end of the staple resist sheet 30, which conforms to the doctor's operating habits and facilitates the doctor's operation.

[0039] Referring to FIGS. 3 to 5, the separation member 200 includes a mounting portion 220 and an operating portion 230. The mounting portion 220 is removably connected to the surgical instrument 100. Specifically, it is removably connected to the distal end of the staple resist sheet 30 of the end effector 18. The operating portion 230 is used for separating tissue.

[0040] The mounting portion 220 and the surgical instrument 100 are removably connected via a mating mechanism. The mating mechanism includes an insertion mechanism and an engagement mechanism. The insertion mechanism includes an insertion portion 222 provided on the separation member 200 and an insertion passage 50 provided on the surgical instrument 100. The engagement mechanism includes an engagement portion 240 provided on the separation member 200 and an engagement port 60 provided on the surgical instrument 100. The insertion passage 50 communicates with the engagement port 60. Specifically, the engagement port 60 communicates with the proximal end of the insertion passage 50 and penetrates the side wall of the insertion passage. When the separation member 200 is attached, the insertion portion 222 and the engagement portion 240 are inserted into the surgical instrument 100 along the insertion passage 50. After being inserted with a predetermined stroke, the engagement portion 240 is locked to the engagement port 60, and the separation member 200 is fixed to the surgical instrument 100. Thereby, the mounting portion 220 of the separation member 200 and the surgical instrument 100 realize a removable connection by insertion and engagement, ensuring reliable attachment and easy detachment.

[0041] The mounting portion 220 includes a connected insertion portion 222 and an engagement portion 240. The engagement portion 240 and the surgical instrument 100 are elastically mated. That is, the engagement portion 240 is connected to the surgical instrument 100 under the action of an elastic force and is detached from the surgical instrument 100 against the action of the elastic force, ensuring reliable connection and easy attachment and detachment. The source of the elastic force may be the elasticity of the engagement portion 240 itself, or another elastic body may abut against the engagement portion 240 and provide an elastic force to the engagement portion 240.

[0042] Specifically, the engaging portion 240 and the engaging opening 60 are elastically mated. That is, the engaging portion 240 is locked to the engaging opening 60 under the action of an elastic force, whereby the separating member 200 is fixed to the surgical instrument 100. Against the action of the elastic force, the engaging portion 240 can be disengaged from the engaging opening 60, whereby the separating member 200 is disengaged from the surgical instrument 100.

[0043] The engaging portion 240 has a first end 241 and a second end 242. The first end 241 is connected to the insertion portion 222, and the second end 242 and the surgical instrument 100 are elastically mated. Specifically, when the second end 242 rotates around the first end 241, the separating member 200 is fixed to or detached from the surgical instrument 100, thereby realizing a removable 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 in the longitudinal direction of the separating member 200. In this embodiment, the first end 241 is located at the distal end with respect to the second end 242, and those skilled in the art can conceive that the first end 241 may be located at the proximal end with respect to the second end 242.

[0044] Specifically, the first end 241 includes a rotation shaft 243, and the insertion portion 222 is provided with a shaft hole 224. The rotation shaft 243 is attached to the shaft hole 224. The rotation shaft 243 rotates within the shaft hole 224 to rotate the engaging portion 240, and finally removably connects the separating member 200 and the surgical instrument 100. The rotation axis is the central axis of the rotation shaft 243.

[0045] The shaft hole 224 is partially open, and the rotation shaft 243 is partially accommodated in the shaft hole 224. That is, the circumferential extension angle of the shaft hole 224 is smaller than 360 degrees. For example, the circumferential extension angle of the shaft hole 224 is 180 degrees. The shaft hole 224 is partially open, making the operation of attaching the rotation shaft 243 to the shaft hole 224 very easy. Furthermore, the size of the separating member 200 can be reduced, and the structure of the separating member 200 becomes more compact.

[0046] The first end 241 of the engaging portion 240 is attached to the first side surface 229 of the insertion portion 222. Note 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 planar region indicated by the reference numeral 229. The second end 242 of the engaging portion 240 protrudes from the second side surface 227 of the insertion portion 222. Note 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 planar region indicated by the reference numeral 227. An opening 228 is provided in the insertion portion 222 that penetrates the first side surface 229 and the second side surface 227, and the second end 242 penetrates the opening 228 from the first side surface 229 and protrudes from the second side surface 227.

[0047] Thereby, the opening 228 provides space for the movement stroke of the second end 242 of the engaging portion 240. That is, the thickness of the insertion portion 222 itself provides space for the movement stroke of the second end 242 of the engaging portion 240. Not only is the structure reliable, but also the size of the separating member 200 can be reduced, and the structural design is very reasonable.

[0048] The second end 242 of the engaging portion 240 and the engaging opening 60 of the surgical instrument 100 are elastically mated. In this embodiment, the engaging portion 240 itself does not have elasticity, and the separating member 200 further includes a support portion 250 that abuts against the engaging portion 240, and the support portion 250 elastically supports the engaging portion 240. At least a part of the support portion 250 is made of an elastic material, and the support portion 250 provides an elastic force to the engaging portion 240. That is, the engaging portion 240 only needs to realize the function of mating with or detaching from the surgical instrument 100, and the support portion 250 only needs to realize the function of providing an elastic force. The two members of the engaging portion 240 and the support portion 250 each play their respective roles, reducing the process requirements for the engaging portion 240 and the support portion 250, and being able to better meet the mass production requirements.

[0049] In order to apply an acting force to the engaging portion 240 toward the second side surface 227 and maintain the engaging portion 240 in the engaging opening 60 without an external force, thereby maintaining it in the first state connected to the surgical instrument 100, the support portion 250 is provided on the first side surface 229 of the engaging portion 240 and is separated from the engaging portion 240 from the second side surface 227.

[0050] Specifically, the support portion 250 has a connected first portion 251 and a second portion 252. The first portion 251 is connected to the first side surface 229, and the second portion 252 abuts against the engaging portion 240, providing an elastic force to the engaging portion 240 so that the engaging portion 240 has a tendency to be locked in the engaging opening 60.

[0051] To securely fix the support portion 250 to the separating member 200, a connecting portion 260 is provided on the mounting portion 220, and the support portion 250 and the mounting portion 220 are fixed by welding at the connecting portion 260. Those skilled in the art can conceive that other appropriate fixing methods may be used according to the materials of the support portion 250 and the mounting portion 220.

[0052] As described above, the shaft hole 224 for mounting the rotation shaft 243 is partially open. To prevent the rotation shaft 243 from falling off from the open shaft hole 224, the support portion 250 covers the open portion of the shaft hole 224. Specifically, the connecting portion 260 is provided adjacent to the shaft hole 224, and the connecting portion 260 is away from the second end 242 of the engaging portion 240 with respect to the shaft hole 224. The distal end of the first portion 251 of the support portion 250 is fixed to 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.

[0053] As can be seen from the above, the position of a part of the rotation shaft 243 is limited by the shaft hole 224, and the position of other parts is limited by the support portion 250. Compared with the case where the support portion 250 is laminated on the completely closed shaft hole 224, the size of the separating member 200 can be significantly reduced, and the structure of the separating member 200 becomes more compact.

[0054] As emphasized, the present invention comprehensively incorporates measures to reduce the size of the separation member 200. Although these designs may make it impossible to visually recognize a reduction in size (e.g., less than 1 mm), it is very important for the size of the separation member 200. The reason is that both the end effector 18 of the surgical instrument 100 and the separation member 200 need to penetrate the sleeve of the puncture device and enter the patient's body for operation. To achieve the purpose of minimally invasive surgery, the sleeve of the puncture device has standard sizes (e.g., 5 mm, 10 mm, 12 mm, 15 mm), and the widths of the end effector 18 and the separation member 200 must be smaller than the diameter of the sleeve of the puncture device. Therefore, when the designer designs the end effector 18 and the separation member 200, even if the requirement to reduce the size to 1 mm cannot be met, it is necessary to be repeatedly considered by the designer and the structure to be repeatedly optimized to achieve it.

[0055] As described above, the first end 241 of the engaging portion 240 is attached to the first side surface 229 of the insertion portion 222, and the first portion 251 of the support portion 250 is connected to the first side surface 229. To better arrange the engaging portion 240 and the support portion 250, the first side surface 229 of the insertion portion 222 is recessed inward to form an accommodation space 226, that is, the accommodation space 226 is provided in the insertion portion 222 of the attachment portion 220, and a part of the engaging portion 240 is accommodated in the accommodation space 226. The accommodation space 226 includes an opening 228 penetrating the insertion portion 222, and the second end 242 of the engaging portion 240 protrudes from the opening 228 in the first state and engages with the engaging port 60. When the separation member 200 is in the first state, a part of the engaging portion 240 is accommodated in the accommodation space 226. Preferably, when the separation member 200 is in the first state, a part of the support portion 250 is also accommodated in the accommodation space 226.

[0056] The accommodating space 226 can accommodate at least a part of the engaging portion 240 and further accommodate at least a part of the supporting portion 250. Therefore, it is possible to avoid all of the engaging portion 240 and the supporting portion 250 protruding outside the first side surface 229 of the inserting portion 222. By reasonably using the space of the inserting portion 222 itself, not only can the size of the inserting portion 222 be reduced, but also the structure of the inserting portion 222 becomes more regular. The accommodating space 226 can accommodate a part of the engaging portion 240 and further realize the limitation on the engaging portion 240. The second end 242 of the engaging portion 240 is located at the opening 228. Thus, the second end 242 can change its position under the action of the elastic force to perform its function. Preferably, a part of the supporting portion 250 is accommodated in the accommodating space 226, and when the inserting portion is inserted into the inserting passage, it is possible to prevent the supporting portion from interfering with the inserting passage.

[0057] In this embodiment, the inserting portion 222 and the engaging portion 240 themselves do not have elasticity, and the separating member 200 further includes an elastic body that abuts against the engaging portion 240. The elastic body abuts against the engaging portion 240 and elastically supports the engaging portion 240. The elastic body is the supporting portion 250. At least a part of the supporting portion 250 is made of an elastic material, and the supporting portion 250 provides an elastic force to the engaging portion 240. A person skilled in the art can conceive that the engaging portion 240 itself may have elasticity, and all solution means using the same or similar ones as this embodiment are included in the protection scope of the present invention.

[0058] In this embodiment, there is no other elastic body between the supporting portion 250 and the engaging portion 240, and the elastic force is provided to the engaging portion 240 only by the supporting portion 250. That is, the elastic body that abuts against the engaging portion 240 and elastically supports the engaging portion 240 includes only the supporting portion 250. A person skilled in the art can conceive that after the supporting portion 250 is provided, another elastic body such as a second elastic body is provided between the supporting portion 250 and the engaging portion 240, and the second elastic body and the supporting portion 250 jointly provide an elastic force to the engaging portion 240. Or, the supporting portion 250 may not be provided, and the elasticity may be provided to the engaging portion 240 only by other elastic bodies. All solution means using the same or similar ones as this embodiment are included in the protection scope of the present invention.

[0059] The second end 242 of the engaging portion 240 includes an engaging surface 244 and an inclined surface 246 provided at an angle to the engaging surface 244. As shown in FIG. 3, the engaging surface 244 extends vertically. As shown in FIGS. 2, 3, and 6, the engaging surface 244 abuts against the side wall of the engaging opening 60 to prevent the separating member 200 from falling off the surgical instrument 100. As shown in FIG. 3, the inclined surface 246 extends upwardly and inclined in the direction from the proximal end to the distal end, where the upward direction herein refers to the direction toward the opening of the engaging opening 60. With the guidance of the inclined surface 246, during the process of being inserted into the insertion passage 50, the position of the engaging portion 240 is changed due to the rotation of the engaging portion 240, whereby the insertion portion 222 of the separating member 200 and the engaging portion 240 can be smoothly inserted into the insertion passage 50 in the direction from the distal end to the proximal end.

[0060] The second end 242 of the engaging portion 240 further includes an upper surface 248 provided between the engaging surface 244 and the inclined surface 246. The upper surface 248 has a predetermined width, making the structure of the second end 242 more reliable. The upper surface 248 may be a flat surface or an inclined surface. When the upper surface 248 is an inclined surface, it is preferable that the inclination angle of the upper surface 248 is smaller than the inclination angle of the inclined surface 246.

[0061] In addition, in this embodiment, the engaging portion 240 is integrally formed. Those skilled in the art can conceive that each part of the engaging portion 240 may be individually formed and integrally connected by a specific connection method. All solution means using the same or similar ones as this embodiment are included within the protection scope of the present invention.

[0062] As described above, the mounting portion 220 of the separating member 200 includes an insertion portion 222 for mounting the engaging portion 240. Referring to FIGS. 4 to 6, the insertion portion 222 extends in the longitudinal direction. Correspondingly, the insertion passage 50 extends along the direction from the distal end surface to the proximal end of the surgical instrument 100. Specifically, the insertion passage 50 extends along the direction from the distal end surface to the proximal end of the staple resist sheet 30.

[0063] As is known to those skilled in the art, the staple resist sheet 30 is provided with feed grooves 33 extending in the longitudinal direction. The feed grooves 33 accommodate a part of the cutting member of the surgical instrument 100 and guide the movement of the cutting member. The feed grooves 33 are provided at the central position of the staple resist sheet 30 and extend in the longitudinal direction. The insertion passage 50, the engagement port 60, and the feed grooves 33 communicate with each other, are coaxially provided, and have a regular structure.

[0064] The engagement port 60 communicates with the proximal end of the insertion passage 50 and penetrates the side wall of the insertion passage 50. Specifically, the engagement port 60 penetrates the side wall of the staple resist surface 31 of the staple resist sheet 30.

[0065] Thus, when it is necessary to attach the separation member 200 to the surgical instrument 100, align the insertion portion 222 of the separation member 200 with the insertion passage 50, and advance the separation member 200 along the direction from the distal end to the proximal end. During the advancement process, the insertion passage 50 abuts against the inclined surface 246 of the second end 242 of the engaging portion 240, and rotates the engaging portion 240 against the elastic force provided by the support portion 250 until the second end 242 of the engaging portion 240 and the insertion portion 222 are smoothly inserted into the insertion passage 50. Continue to advance the separation member 200 until the second end 242 of the engaging portion 240 is aligned with the engagement port 60. The second end 242 of the engaging portion 240 rotates in the reverse direction under the action of the elastic force provided by the support portion 250, and the second end 242 protrudes from the second side surface 227 of the insertion portion 222 and is locked to the engagement port 60. Thereby, the separation member 200 is attached to a predetermined position.

[0066] The side wall of the insertion passage 50, specifically, the side wall located on the staple resist surface 31 of the staple resist sheet 30 of the insertion passage 50, includes a first hollow portion 51 and a second hollow portion 52 communicating with the engagement port 60. The second hollow portion 52 is located at the distal end with respect to the first hollow portion 51. The width of the second hollow portion 52 is larger than the width of the first hollow portion 51, and the width of the engagement port 60 is larger than the width of the first hollow portion 51.

[0067] During the process of inserting the separation member 200, the wide second hollow portion 52 can make the insertion operation of the separation member 200 easier. During the process of the separation member 200 moving within the second hollow portion 52, the engaging portion 240 does not need to rotate against the elasticity of the supporting portion 250, the supporting portion 250 is not deformed, the service life of the separation member 200 can be extended, and furthermore, an increase in the resistance force due to the contact between the engaging portion 240 and the second hollow portion can be avoided. When the inclined surface 246 of the second end 242 of the separation member 200 contacts the first hollow portion 51, the second end 242 of the engaging portion 240 rotates against the elasticity of the supporting portion 250 and moves inside the first hollow portion 51. When the separation member 200 moves to the second end 242 of the engaging portion 240 and is aligned with the engaging port 60, since the width of the engaging port 60 is larger than the width of the first hollow portion 51, the engaging surface 244 of the engaging portion 240 can abut against the side wall adjacent to the first hollow portion 51 of the engaging port 60. Then, the second end 242 of the engaging portion 240 rotates in the reverse direction under the action of the elastic force of the supporting portion 250 and protrudes from the second side surface 227, whereby the second end 242 is smoothly locked to the engaging port 60 and the separation member 200 is attached to a predetermined position.

[0068] As can be seen from the above, due to the reasonable design of the first hollow portion 51 and the second hollow portion 52, not only can the service life of the separation member 200 be extended, but also the attachment operation of the separation member 200 becomes simple and easy.

[0069] The length of the second hollow portion 52 is larger than the length of the first hollow portion 51. That is, during the process of the engaging portion 240 moving within the long second hollow portion 52, the engaging portion 240 does not need to rotate against the elasticity of the supporting portion 250, the supporting portion 250 is not deformed, and the service life of the separation member 200 is extended.

[0070] The width of the first hollow portion 51 is equal to the width of the feed groove 33. The feed groove 33, the engaging port 60, the first hollow portion 51, and the second hollow portion 52 are provided coaxially, and it can be ensured that the position after the separation member 200 is attached is appropriate and does not deviate from the central axis, making it easier for the doctor to operate the separation member.

[0071] The second hollow portion 52, the first hollow portion 51, the engagement port 60, and the feed groove 33 form a passage groove that extends from the distal end toward the proximal end on the side wall of the insertion passage 50.

[0072] A first wedge portion 39 is provided at the distal end of the staple resist sheet 30. The first wedge portion 39 has a first inclined surface 38. A second wedge portion 239 is provided at the proximal end of the operating portion 230. The second wedge portion 239 has a second inclined surface 238. After the separation member 200 is attached to the staple resist sheet 30, the first inclined surface 38 abuts against the second inclined surface 238.

[0073] When the first inclined surface 38 abuts against the second inclined surface 238, the first wedge portion 39 and the second wedge portion 239 are laminated, and the separation member 200 can be securely attached by the staple resist sheet 30. Further, the first wedge portion 39 can make the distal end of the staple resist sheet 30 thinner than other portions, and the second wedge portion 239 can make the proximal end of the operating portion thinner than other portions. That is, even when the first wedge portion 39 and the second wedge portion 239 are laminated, the size of the joint portion is not significantly increased. On the one hand, the attachment is made reliable by the lamination, and on the other hand, the size is not significantly increased by the lamination, and the design is very reasonable.

[0074] The second hollow portion 52 is provided on the first inclined surface 38. The attachment portion 220 extends along the direction from the second inclined surface 238 toward the proximal end, and has a compact structure and a reasonable design.

[0075] The thickness of the combination of the first wedge portion 39 and the second wedge portion 239 corresponds to the thickness of the staple resist sheet 30 adjacent to the proximal end of the first inclined surface 38 and / or the thickness of the separation member adjacent to the distal end of the second inclined surface 238.

[0076] "Corresponds to the thickness" means that the thicknesses are substantially equal, avoiding the formation of a step at the joint portion between the separation member 200 and the staple resist sheet 30, thereby avoiding damaging the tissue.

[0077] As described above, the separating member 200 includes an attachment portion 220 and an operating portion 230, and the operating portion 230 is used to peel off tissue.

[0078] The operating portion 230 includes a proximal end 231 and a distal end 232. Along the direction from the proximal end 231 to the distal end 232, the width of the operating portion 230 gradually decreases. When the operating portion 230 peels off tissue, the narrow distal end 232 preferentially contacts the tissue, and the narrow distal end 232 can be easily inserted into the tissue to peel the target tissue from other tissues, making the operation easier.

[0079] At least a part of the operating portion 230 extends in an arc shape from the proximal end 231 to the distal end 232, and the operating portion 230 has an operating surface 234 that extends in an arc shape and is concave inward. The operating surface 234 that extends in an arc shape can smoothly penetrate the gap between the target tissue and other tissues when the operating portion 230 peels off tissue, and can better guide the end effector 18 to penetrate the gap between the target tissue and other tissues, making the operation of the separating member 200 and the surgical instrument 100 easier.

[0080] When the operating portion 230 extends in an arc shape and the operating surface 234 extends in an arc shape, the back surface of the operating portion also extends in an arc shape. The operating portion 230 has a regular structure and a beautiful outer shape.

[0081] There are no obvious corners on the outer contour lines of the operating portion 230 and the attachment portion 220 of the separating member 200, and all contour lines are filleted, which can prevent the corners from cutting the tissue.

[0082] As described above, the separating member 200 is attached to the distal end of the surgical instrument 100. The surgical instrument 100 has an attachment end for attaching the separating member 200, and the separating member 200 further includes an elastic member 280, and the elastic member 280 abuts against the end face of the attachment end. Specifically, the elastic member 280 abuts against the end face of the distal end of the staple resist sheet 30.

[0083] Since the end face of the distal end of the attachment end is hard and the elastic member 280 is flexible and deformable, when the elastic member 280 abuts against the end face of the distal end of the attachment end, not only can the end face of the distal end of the attachment end avoid damaging the tissue, but also it can further reduce the risk of the tissue being pinched in the gap between the end face of the distal end of the attachment end and the separating member 200, avoid unnecessary pulling on the tissue, and thereby avoid damaging the tissue.

[0084] The outer surface of the elastic member 280 protrudes from the outer surface of the attachment end or is in the same plane as the outer surface of the attachment end. Specifically, the staple resist sheet has a staple resist surface 31 and a back surface 32. In this embodiment, preferably, the outer surface of the elastic member 280 is in the same plane as or protrudes from the back surface 32 of the staple resist sheet 30. When peeling the target tissue from other tissues, since the attachment end on one side of the back surface 32 of the staple resist sheet 30 can easily damage other tissues, the outer surface of the elastic member 280 is in the same plane as or protrudes from the back surface 32 of the staple resist sheet, so as to maximally avoid the end face of the distal end of the attachment end from damaging the tissue and maximally reduce the risk of the tissue being pinched in the gap between the end face of the distal end of the attachment end and the separating member 200.

[0085] A slot 290 is provided in the separating member 200. The attachment end has a first outer surface 91, and the separating member 200 has a second outer surface 202. When the separating member 200 is in the first state, the slot 290 is located at the adjacent portion between the first outer surface 91 and the second outer surface 202, and the elastic member 280 is provided in the slot 290. The slot 290 can better attach the elastic member 280 without affecting the function of the elastic member 280.

[0086] The outer surface of the elastic member 280 protrudes from the second outer surface 202 or is in the same plane as the second outer surface 202. Although the slot 290 can better attach the elastic member 280, there is a risk that the proximal end and / or distal end of the slot 290 may damage the tissue. By making the outer surface of the elastic member 280 protrude from the second outer surface 202 or be in the same plane as the second outer surface 202, not only is it easy to attach the elastic member 280, but also the tissue can be avoided from being damaged.

[0087] The shape of the elastic member 280 matches the shape of the slot 290, which can maximize the prevention of tissue damage. The elastic member 280 is press-fitted into the slot 290, which not only ensures the attachment of the elastic member 280, but also makes it easy to prevent the elastic member 280 from protruding from the adjacent surface and damaging the tissue.

[0088] The slot 290 extends in the circumferential direction, which makes the attachment of the elastic member 280 more reliable.

[0089] 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 frictional force between the slot 290 and the elastic member 280, and the elastic member 280 can be reliably attached to the slot 290.

[0090] The shape of the bottom surface of the slot 290 is set symmetrically with respect to the central symmetry plane in the longitudinal direction of the separation member 200. The structure is regular, the force received by the elastic member 280 is uniform, and it can better play the role of preventing tissue damage.

[0091] In this embodiment, the elastic member 280 is an independently formed member, and the elastic member 280 is provided in the slot 290 by manual attachment. Those skilled in the art can conceive that the elastic member 280 can be injection-molded into the slot 290, and all solution means using the same or similar ones as this embodiment are included in the protection scope of the present invention.

[0092] Referring to FIGS. 7 to 13, the present embodiment further provides a packing box 300 for the separating member 200, and the separating member 200 can be accommodated in the packing box 300. The packing box 300 provides an outer package for the separating member 200, facilitating the transportation and storage of the separating member 200. The separating member 200 and the packing box 300 form an assembly, and the assembly may be sold and purchased individually. It may also be combined with the surgical instrument 100 to form a surgical kit and sold and purchased. Regardless of the sales and purchase method, both can meet the doctor's need to peel the target tissue. Of course, the separating member 200 of the present embodiment may also be sold and purchased individually.

[0093] The packing box 300 includes a receiving portion 320 for accommodating the separating member 200, and the separating member 200 can be inserted into the receiving portion 320, that is, it can be accommodated in the packing box 300. The packing box 300 includes a housing 350. One surface of the housing 350 is recessed inward to form an open receiving portion 320. The receiving portion 320 has an open end, facilitating the insertion of the separating member 200 into the packing box 300 from the open end or the removal of the separating member 200 from the packing box 300.

[0094] The receiving portion 320 has a closed end 330 provided at a distance from the open end. The shape of the closed end 330 may match the shape of the distal end 232 of the separating member 200, or may 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, when the distal end 232 of the separating member 200 abuts against the closed end 330 of the receiving portion 320 during the process of inserting the separating member 200 into the receiving portion 320, the operator can sense that the separating member 200 is accommodated in a predetermined position.

[0095] The receiving portion 320 is provided with a convex rib 324, and the convex rib 324 is provided with a guiding surface 326. The separating member 200 slides into the receiving portion 320 along the guiding surface 326. The guiding surface 326 can make it easy and accurate to insert the separating member 200 into the receiving portion 320.

[0096] The convex rib 324 is further provided with a contact surface 328 which intersects with the guiding surface 326 at an angle, specifically an obtuse angle. The contact surface 328 is close to the closed end 330 of the accommodating portion 320 with respect to the guiding surface 326, and the contact surface 328 restricts the separating member 200. Specifically, when the separating member 200 is inserted into the accommodating portion 320, the contact surface 328 abuts against a part of the operating surface 234 of the separating member 200, and the separating member 200 is reliably accommodated by the accommodating portion 320.

[0097] As can be seen from the above, the convex rib 324 can not only limit the size of the accommodating portion 320, but also guide the operation of sliding the separating member 200 into the accommodating portion 320. After the separating member 200 slides into the accommodating portion 320, the convex rib 324 can further restrict the separating member 200, and the structural design is very reasonable.

[0098] Referring to FIG. 11, a protruding portion 322 is provided on the surface of the accommodating portion 320. The protruding portion 322 can support the operating portion 230 of the separating member 200 and can reduce the contact area between the operating portion 230 and the accommodating portion 320, thereby making the insertion and removal operations of the separating member 200 easier. In this embodiment, the protruding portion 322 extends substantially in a strip shape in the longitudinal direction, and the protruding portion 322 extends along the longitudinal direction. Those skilled in the art can conceive that other shapes of the protruding portion 322 may also be possible.

[0099] As described above, the separating member 200 includes an elastic member 280 that abuts against the end surface of the mounting end of the surgical instrument 100. Preferably, the outer surface of the elastic member 280 protrudes from the outer surface of the operating portion 230 of the separating member 200, whereby the elastic member 280 elastically abuts against the inner surface of the accommodating portion 320.

[0100] During the process of inserting the separation member 200 into the accommodating portion 320 of the packaging box 300, when the elastic member 280 elastically abuts against the inner surface of the accommodating portion 320, the operator can perceive this damping effect, which provides the operator with operation feedback, and the operator can confirm whether the separation member 200 is accommodated in a predetermined position based on this feedback. That is, in addition to the above-mentioned closed end 330 being able to sense that the operator has inserted the separation member 200 into a predetermined position, the elastic member 280 elastically abuts against the inner surface of the accommodating portion 320 to further provide feedback to the operator, thereby further improving the operation experience. And the frictional force between the elastic member 280 and the inner surface of the accommodating portion 320 can prevent the separation member 200 from falling out of the accommodating portion 320.

[0101] As described above, the separation member 200 and the surgical instrument 100 are removably connected via a mating mechanism, and the separation member 200 can be switched between a first state and a second state. In the first state, the separation member 200 is connected to the surgical instrument 100, and in the second state, the separation member 200 is detached from the surgical instrument 100.

[0102] In this embodiment, preferably, the packaging box 300 can not only accommodate the separation member 200, but also switch the separation member 200 between the first state and the second state. That is, the packaging box 300 can not only provide packaging for the separation member 200, but also be used as a detaching and attaching tool for the separation member 200 with respect to the surgical instrument 100, and the design is very ingenious.

[0103] Specifically, the packaging box 300 includes an operating member 340, and the operating member 340 acts on the mating mechanism to switch the separation member 200 from the first state to the second state. More specifically, the operating portion 342 acts on the engaging mechanism to switch the separation member 200 from the first state to the second state.

[0104] The operating member 340 includes a connected operating portion 342 and a driving portion 348. The operating portion 342 is pressed by the operator, and the driving portion 348 acts on the engaging mechanism to switch the separation member 200 from the first state to the second state.

[0105] The operation unit 342 switches the separation member 200 from the first state to the second state by performing a first movement to drive the drive unit 348 to perform a second movement. The first movement includes rotation, and the second movement includes rotation.

[0106] The packaging box 300 includes a housing 350. The housing 350 is partially recessed inward to form a receiving portion 320. The housing 350 includes a first side wall 351 and a second side wall 352 surrounding the receiving portion 320. There is a gap 353 between the first side wall 351 and the second side wall 352. The first side wall 351 forms the operation unit 342. The gap 353 extends in the longitudinal direction along the direction from one end of the housing 350 to the other end, and the extension length of the gap 353 is smaller than the extension length of the housing 350. Due to the existence of the gap 353, the first side wall 351 can move relative to the second side wall 352, thereby moving the drive unit 348 and finally acting on the separation member 200 to switch the separation member 200 from the first state to the second state. And the first side wall 351 is a part of the housing 350. A part of the housing 350 forms the operation unit 342, and there is no need to additionally provide other members to form the operation unit 342. The structure is simple and the design is reasonable.

[0107] The operation unit 342 rotates to rotate the drive unit 348. Specifically, the first side wall 351 includes a connection end 344 and a free end 346. The drive unit 348 is connected to the free end 346. The free end 346 rotates around the joint portion of the connection end 344 and the second side wall to rotate the drive unit 348. There is no need to provide additional members, the structure is simple, and the operation is easy.

[0108] The rotation axis of the free end 346 is perpendicular to the central symmetry plane in the longitudinal direction of the packaging box 300. The rotation axis of the free end 346 is parallel to the rotation axis of the engaging portion 240. The structure of the assembly formed by the separation member 200 and the packaging box 300 becomes regular.

[0109] The connection end 344 of the operating part 342 is made of an elastic material. Preferably, the operating part 342 is entirely made of an elastic material. Thus, when the free end 346 is pressed, the connection end 344 deforms to rotate the free end 346 around the joint between the connection end 344 and the second side wall. Thereby, the doctor can move the driving part 348 against the elastic force of the operating part 342 itself to switch the separating member 200 from the first state to the second state. By using the elasticity of the operating part 342 itself, the structure of the packing box 300 becomes simpler. As shown in FIGS. 8, 11, and 12, due to the elasticity of the operating part 342 itself, the free end 346 is maintained in a lifted state without receiving an external force.

[0110] Both the operating part 342 and the driving part 348 extend in the longitudinal direction, and the extending directions of the operating part 342 and the driving part 348 are perpendicular to each other. The operating part 342 and the driving part 348 that extend in the longitudinal direction and have perpendicular extending directions provide sufficient stroke so that the driving part 348 can effectively drive the engaging part 240, thereby enabling the separating member 200 to be smoothly detached from the surgical instrument 100.

[0111] The operating part 342 is connected to the driving part 348, and both are combined to achieve contact with the engaging part 240. The operating part 342 and the driving part 348 are two independent members. Specifically, the driving part 348 is a pin, and the pin is combined with the hole of the operating part 342 to realize the connection between the driving part 348 and the operating part 342. A person skilled in the art can conceive that the operating part 342 and the driving part 348 may be integrally formed.

[0112] As shown in FIGS. 11 and 12, the housing 350 is provided with an opening 354 through which the driving part 348 can pass. The opening 354 and the driving part 348 are provided opposite to each other. Thus, when the driving part 348 is installed, the driving part 348 is connected to the operating part 342 after passing through the opening 354, and it is easy to insert an installation tool into the opening 354 to bias the driving part 348, and the structural design is reasonable. The driving part 348 is connected to the free end 346 of the operating part 342. Correspondingly, the opening 354 faces the free end 346 of the operating part 342, and the layout is reasonable.

[0113] The width of the driving part 348 is smaller than the width of the passage groove of the staple resist sheet 30 (including the second hollow part 52, the first hollow part 51, and the engaging port 60 that are communicated in sequence). In the process of the separating member 200 being detached from the surgical instrument 100, the driving part 348 can move in the passage groove and maintain the state of pressing the second end 242 of the engaging part 240.

[0114] As can be seen from the above, the operating member 340 acts on the engaging mechanism to switch the separating member 200 from the first state to the second state.

[0115] The distal end of the accommodating part 320 is closed to form a closed end 330. When the separating member 200 is attached to the surgical instrument 100, the packaging box 300 containing the separating member 200 moves the separating member 200 toward the surgical instrument 100, and the closed end 330 pushes the separating member 200 and inserts it into the surgical instrument 100. Therefore, the closed end 330 of the accommodating part 320 of the packaging box 300 pushes the separating member 200 to switch it from the second state to the first state.

[0116] The packaging box 300 is made of a transparent material, which not only makes it beautiful, but also greatly contributes to the operator's observation of whether the detachment operation is appropriate when the separating member 200 is detached and attached using the packaging box 300.

[0117] Hereinafter, the application scenario of the separating member 200 of the present embodiment will be described.

[0118] After the separating member 200 is shipped and before it is used, the separating member 200 is located in the accommodating part 320 of the packaging box 300. The elastic member 280 of the separating member 200 elastically abuts against the inner surface of the accommodating part 320, and the separating member 200 is maintained in the packaging box 300 under the action of the elastic force of the elastic member 280.

[0119] During the process of a doctor using the surgical instrument 100, when it is necessary to peel the tissue with the separating member 200, the doctor holds the housing 350 of the packaging box 300, aligns the mounting portion 220 of the separating member 200 with the insertion passage 50 provided in the staple resist sheet 30 of the end effector 18 of the surgical instrument 100, and advances the packaging box 300 along the direction towards the surgical instrument 100. During the advancing process, the insertion portion 222 and the engaging portion 240 of the separating member 200 move along the insertion passage 50 until the second end 242 of the engaging portion 240 is aligned with the engaging opening 60 and locked in the engaging opening 60. At this time, the separating member 200 is attached to the surgical instrument 100.

[0120] After that, the doctor pulls the packaging box 300 along the direction away from the surgical instrument 100 against the frictional force between the inner surface of the accommodating portion 320 and the elastic force of the elastic member 280, detaches the packaging box 300 from the separating member 200, and the doctor can peel the target tissue with the separating member 200. Specifically, the narrow distal end 232 of the operating portion 230 of the separating member 200 is aligned with the joint site between the target tissue and other tissues, and the surgical instrument 100 and the separating member 200 are advanced forward until the separating member 200 peels the target tissue from other tissues.

[0121] After the separating member 200 peels the target tissue from other tissues, the doctor moves the surgical instrument 100 forward along the direction towards the distal end 232, places the target tissue between the staple resist sheet 30 and the staple bin sheet, and then the doctor can cut and suture the target tissue with the surgical instrument 100.

[0122] When the doctor no longer needs to peel off tissue during the process of using the surgical instrument 100, the separation member 200 is removed from the surgical instrument 100 to avoid the separation member 200 occupying space and affecting other operations when the surgical instrument 100 does not require the separation member 200. Specifically, the doctor aligns the packaging box 300 with the separation member 200 and moves it to accommodate the separation member 200 in the accommodation part 320 of the packaging box 300. Then, the doctor presses the free end 346 of the operation part 342 and rotates the free end 346 around the connection end 344 to rotate the driving part 348 until the driving part 348 abuts against the inclined surface 246 or the upper surface 248 of the second end 242 of the engaging part 240. Continue to press the free end 346 of the operation part 342 until the second end 242 of the engaging part 240 is disengaged from the engaging port 60. The driving part 348 drives the second end 242 of the engaging part 240 to rotate against the acting force of the supporting part 250. Then, the doctor pulls the packaging box 300 in the direction away from the surgical instrument 100. The packaging box 300 disengages the insertion part 222 of the separation member 200 from the insertion passage 50, disengaging the separation member 200 from the surgical instrument 100. The separation member 200 detached from the surgical instrument 100 is located in the accommodation part 320 of the packaging box 300 and returns to the state before being used after shipment. Note that after the driving part 348 disengages the second end 242 of the engaging part 240 from the engaging port, the driving part 348 maintains the state of pressing the second end 242 of the engaging part 240, that is, during the process of the separation member 200 being detached from the surgical instrument 100, the driving part 348 always presses the second end 242 of the engaging part 240 to bias the second end 242. The driving part 348 moves in the passage groove, and finally the packaging box 300 detaches the separation member 200 from the surgical instrument 100.

[0123] Figs. 16 to 17 show a separation member 200a used in combination with a surgical instrument according to the second embodiment of the present invention.

[0124] Hereinafter, the differences between the separation member 200a of the present embodiment and the separation member of the first embodiment will be mainly described.

[0125] In the first embodiment, the elastic member extends annularly in the circumferential direction, and the annular elastic member is attached to a slot between the separating member and the distal end face of the staple resist sheet.

[0126] In this embodiment, the elastic member 280a is in the shape of a bag, at least a part of the operating portion 230a is inserted into the elastic member 280a, and at least a part of the operating portion 230a has the same shape as the elastic member 280a. Specifically, all portions of the operating portion 230a from the distal end to the portion adjacent to the attachment end of the surgical instrument are inserted into the elastic member 280a. The end face opened at the proximal end of the elastic member 280a abuts against the distal end face of the attachment end, avoiding the distal end face of the attachment end from damaging the tissue.

[0127] FIG. 18 shows a separating member used in combination with a surgical instrument according to the third embodiment of the present invention.

[0128] Hereinafter, the differences between the separating member 200b of this embodiment and the separating member of the first embodiment will be described around.

[0129] In the first embodiment, the first end of the engaging portion includes a rotation axis, the rotation axis is integrally formed with the other part of the engaging portion, an open shaft hole is provided in the insertion portion, the rotation axis is partially accommodated in the shaft hole, and the supporting portion covers the open portion of the shaft hole, so that the second end of the engaging portion can rotate around the rotation axis.

[0130] In this embodiment, the separating member 200b includes an independent rotation axis 243b, a pin hole 299b through which the rotation axis 243b can penetrate is provided at the first end of the engaging portion 240b, circular holes 298b corresponding to the two ends of the pin hole 299b are provided in the attachment portion of the separating member 200b, and the rotation axis 243b sequentially penetrates through the first circular hole 298b, the pin hole 299b, and the second circular hole 298b to rotatably attach the first end of the engaging portion 240b to the attachment portion. The rotation axis 243b is in close contact with the first circular hole 298b and / or the second circular hole 298b to prevent its dropping off.

[0131] In addition, in the present embodiment, the shape of the elastic member 280b of the separation member 200b and the alignment mechanism between the elastic member 280b and the operating portion 230b are the same as those in the second embodiment, and thus detailed description thereof will be omitted here.

[0132] FIGS. 19 to 20 show a separation member used in combination with a surgical instrument according to a fourth embodiment of the present invention.

[0133] Hereinafter, the differences between the separation member 200c of the present embodiment and the separation member of the third embodiment will be mainly described.

[0134] In the third embodiment, a connection portion is provided on the distal side adjacent to the first end of the engaging portion at the attachment portion of the separation member. The first portion of the support portion is connected to the connection portion, and the support portion extends from the connection portion toward the proximal end. The support portion biases the engaging portion with respect to the second portion located at the proximal end, so that the engaging portion has a tendency to be locked to the engaging port of the surgical instrument.

[0135] In the present embodiment, the support portion 250c is provided close to the proximal end of the engaging portion 240c. The proximal end of the support portion 250c and the attachment portion 220c are connected by a method such as welding. The support portion 250c has elasticity, and the distal end of the support portion 250c biases the second end of the engaging portion 240c, so that the engaging portion 240c has a tendency to be locked to the engaging port 60c of the surgical instrument.

[0136] FIGS. 21 to 22 show a separation member used in combination with a surgical instrument according to a fifth embodiment of the present invention.

[0137] Hereinafter, the differences between the separation member 200d of the present embodiment and the separation member of the second embodiment will be mainly described.

[0138] In the second embodiment, the engaging portion itself has no elasticity, and the support portion provides an elastic force to the engaging portion, so that the engaging portion has a tendency to be locked to the engaging port of the surgical instrument.

[0139] In this embodiment, at least a part of the engaging portion 240d itself is made of an elastic material, and the engaging portion 240d itself has a tendency to be locked to the engaging opening of the surgical instrument. That is, no additional elastic body for providing an elastic force to the engaging portion 240d is provided, and the structure is simpler.

[0140] In this embodiment, the proximal end of the engaging portion 240d is connected to the mounting portion 220d of the separating member 200d. The engaging portion 240d is deformed, and the distal end of the engaging portion 240d rotates around the proximal end, so that the engaging portion 240d is locked to or disengaged from the engaging opening, and finally the separating member 200d is switched between the first state and the second state. Note that no additional rotation axis is provided at the proximal end, and the distal end rotates around the connection portion between the proximal end and the mounting portion 220d.

[0141] As can be seen from the above, the structure of the separating member 200d of this embodiment is simpler and the cost is lower.

[0142] Figs. 23 to 26 show a separating member used in combination with a surgical instrument according to the sixth embodiment of the present invention.

[0143] Hereinafter, the differences between the separating member 200e of this embodiment and the separating member of the fifth embodiment will be mainly described.

[0144] In the fifth embodiment, the engaging portion is provided on the front surface (the second side surface) of the mounting portion of the separating member, and the engaging portion is fitted with an engaging opening provided in the surgical instrument.

[0145] In this embodiment, the engaging portion 240e is provided on the back surface of the mounting portion 220e of the separating member 200e, the engaging opening 60e is provided on the back surface 32e of the staple resist sheet 30e, and the engaging portion 240e provided on the back surface of the mounting portion 220e is fitted with the engaging opening 60e provided on the back surface 32e of the staple resist sheet 30e to realize a detachable connection between the separating member 200e and the surgical instrument.

[0146] The engaging opening 60e is provided on the back surface 32e of the staple resist sheet 30e. Since it is not affected by the staple bin sheet, the operating member of the packing box can be operated on the back surface 32e of the staple resist sheet 30e to realize the attachment and detachment of the separating member 200e. The operating space becomes larger and the operation is easier.

[0147] The distal end of the engaging portion 240e and the separating member 200e are connected by a method such as welding. The engaging portion 240e itself has elasticity, thereby realizing the switching between the first state and the second state, and the detailed description is omitted here.

[0148] Figs. 27 to 29 show a separating member used in combination with a surgical instrument according to the seventh embodiment of the present invention.

[0149] Hereinafter, the differences between the separating member 200f of the present embodiment and the separating member of the fifth embodiment will be mainly described.

[0150] In the fifth embodiment, the proximal end of the engaging portion is fixed to the mounting portion of the separating member, and the distal end of the engaging portion is fitted with the engaging opening of the surgical instrument.

[0151] In the present embodiment, the distal end of the engaging portion 240f is fixed to a portion other than the engaging portion 240f of the separating member 200f, and the proximal end of the engaging portion 240f is fitted with the engaging opening of the surgical instrument.

[0152] In the present embodiment, the separating member 200f is provided with a receiving cavity 297f. The receiving cavity 297f extends along the direction from the proximal end of the mounting portion toward the operating portion. The receiving cavity 297f is partially located in the operating portion. A mounting shaft 296f extending vertically is provided at the distal end of the receiving cavity 297f. The engaging portion 240f is provided with a mounting hole that can be sleeved on the mounting shaft 296f. The mounting hole fits with the mounting shaft 296f to realize the fitting of the distal end of the engaging portion 240f and the separating member 200f. The proximal end of the engaging portion 240f can rotate relative to the distal end to realize the engagement and disengagement with the engaging opening.

[0153] In addition, in this embodiment, the mounting shaft 296f is a cylindrical shaft and the mounting hole is a circular hole. However, the engaging portion 240f does not rotate around the axis of the mounting shaft 296f, the rotation axis of the engaging portion 240f is the same as that in the above-described embodiment, and the rotation axis of the engaging portion 240f is parallel to the operating surface of the separating member 200f.

[0154] As described above, in the present invention, the doctor first separates the target tissue from other tissues with the separating member, and then the doctor moves the surgical instrument forward to place the target tissue between the staple bin sheet and the staple resist sheet, and operates the surgical instrument to cut and suture the target tissue. Separating the target tissue with the separating member makes the doctor's operation easier and simpler. The engaging mechanism elastically fits the separating member and the surgical instrument, ensuring reliable connection and easy detachment.

[0155] In the present invention, the elastic body abuts against the end face of the mounting end, maximally avoiding damage to the tissue by the end face of the distal end of the mounting end, and can maximally reduce the risk of the tissue being caught in the gap between the end face of the distal end of the mounting end and the separating member.

[0156] In the present invention, the packing box can not only provide packaging for the separating member, but also be used as a detaching tool for the separating member with respect to the surgical instrument, and the design is very ingenious. In the present invention, the above elastic body can not only avoid damaging the tissue, but also prevent the separating member from accidentally falling off when the separating member is housed in the packing box.

[0157] Although this specification has been described according to the embodiments, each embodiment does not only include one independent technical solution. This description method in the specification is only for clarity. Those skilled in the art should consider the entire specification, and appropriately combine the technical solutions in each embodiment to form other embodiments that can be understood by those skilled in the art.

[0158] The above series of detailed descriptions are merely for specifically explaining the feasible embodiments of the present invention, rather than for limiting the protection scope of the present invention. All equivalent embodiments and modifications made without departing from the technical spirit of the present invention should be included within the protection scope of the present invention.

Claims

1. A separation member for use with a surgical instrument, the separation member comprising an attached portion and an actuating portion connected together, the attached portion including an engaging portion, the actuating portion being used to dissect tissue, the engaging portion and the surgical instrument being elastically mated and disengaged such that the attached portion is removably connected to the surgical instrument, and at least a portion of the engaging portion is made of an elastic material.

2. The surgical instrument has an engagement port, In the first state, the engagement portion is engaged with the engagement port under the action of an elastic force, thereby elastically fitting the separating member and the surgical instrument, The separating member according to claim 1 , wherein in the second state, the engaging portion is disengaged from the engaging port against the action of the elastic force, thereby separating the separating member from the surgical instrument.

3. The separation member according to claim 1 or 2, characterized in that a distal end of the engagement portion is fixed to a portion of the separation member other than the engagement portion, and the engagement portion is deformed so that a proximal end of the engagement portion is engaged with or disengaged from an engagement port of the surgical instrument.

4. The separation member according to claim 3, characterized in that the separation member has an accommodating cavity extending along a direction from a proximal end of the mounting portion toward the actuating portion, the accommodating cavity being partially located in the actuating portion, a distal end of the accommodating cavity having a mounting axis extending vertically therethrough, and a mounting hole is provided in the engagement portion, the mounting hole being engaged with the mounting axis.

5. 5. The separating member according to claim 4, wherein the pivot axis of said engaging portion is parallel to the operating surface of said separating member.

6. The separating member according to claim 4, wherein a proximal end of the engaging portion is capable of rotating relative to a distal end of the engaging portion to realize engagement with and disengagement from the engaging port.

7. 5. The separating member according to claim 4, wherein the mounting shaft is a cylindrical shaft and the mounting hole is a circular hole.

8. A surgical kit comprising: a separation member according to any one of claims 1 to 7; and a surgical instrument, the surgical instrument including an end effector, the separation member being removably connected to the end effector.

9. 9. The surgical kit of claim 8, wherein the end effector includes a staple bin sheet and a staple resisting sheet pivotally connected to the staple bin sheet, the staple bin sheet being adapted to operably support a staple bin assembly positioned therein, and the staple resisting sheet being selectively movable between an open position and a closed position to either grasp tissue or loosen tissue.

10. 9. The surgical kit of claim 8, further comprising a packaging box, the packaging box including a container for housing the separation member, and the packaging box further comprising an operating member, the operating member configured to drive the separation member to elastically engage with or disengage from the surgical instrument.

11. 11. The surgical kit of claim 10, wherein the packaging box further includes a housing, one side surface of the housing is recessed inward to form an open storage portion, the storage portion having an open end and a closed end spaced apart from the open end, the separation member configured to be inserted into or removed from the packaging box through the open end, and the closed end configured to restrict a distal end of the separation member.

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