Anastomat assembly with auxiliary membrane and endoscope anastomat

Abstract

A nail bin assembly comprises a nail bin body, a nail bin cover and the nail bin auxiliary film, a nail bin auxiliary film limiting boss is arranged at the rear end of the nail bin body, and the nail bin cover is connected with the nail bin body in an inserted mode at the initial position of the anastomat assembly so as to press the head of the nail bin auxiliary film. The percussion position and the nail bin body are loosened, so that the head of the nail bin auxiliary film is separated from the pressing position; the nail abutting base assembly comprises a nail abutting base, a nail abutting base clamping piece and a nail abutting base auxiliary film, a nail abutting base auxiliary film limiting groove is formed in the rear end of the nail abutting base, the initial position of the nail abutting base clamping piece is connected with the nail abutting base in an inserted mode so as to press the head of the nail abutting base auxiliary film, and the percussion position of the nail abutting base clamping piece is loosened from the nail abutting base so that the head of the nail abutting base auxiliary film can be separated from the pressing position. By means of the mode, the fixing structures are additionally arranged on the nail abutting seat and the nail bin, the auxiliary film is firstly fixed on the nail abutting seat and the nail bin, the nail pushing sliding block and the cutting knife are utilized to enable the fixing structures to be invalid, the auxiliary film is separated from the anastomat head, operation steps are optimized, and operation efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical stapler technology, and in particular to a stapler assembly with an auxiliary membrane and a laparoscopic stapler. Background Technology

[0002] The laparoscopic anastomosis device is a high-precision medical device used in minimally invasive surgeries (such as laparoscopic surgery). It is mainly used for cutting, suturing and anastomosing tissues. Its core working principle is to anastomose and sever tissues using titanium screws and a cutting blade, which significantly improves surgical efficiency and reduces patient trauma.

[0003] The anvil, staple cartridge base, and staple magazine assembly are key components of a laparoscopic stapler, and their design directly affects the anastomosis outcome and safety. The use of an auxiliary membrane can further enhance the anastomosis effect. Currently, auxiliary membranes typically employ a sleeve-like structure, composed of biomaterials and removable fixation sutures. In use, the auxiliary membrane is fitted over the anvil and staple magazine assembly; after tissue closure, the fixation sutures are removed to release the constraint, thus achieving its function.

[0004] However, in existing technologies, the installation and fixing of auxiliary membranes are relatively complex, inefficient, and costly, specifically as follows:

[0005] Complex operation: The insertion of the auxiliary membrane and the removal of the fixation sutures are complicated, which increases the operation time and difficulty.

[0006] Low efficiency: Cumbersome operating procedures reduce surgical efficiency and affect the overall efficiency of the surgery;

[0007] High cost: The structural design of the auxiliary membrane and the use of fixing lines increase material and production costs. Utility Model Content

[0008] The main technical problem solved by this utility model is to provide a stapler assembly with an auxiliary membrane and a laparoscopic stapler. By adding a fixing structure to the anvil and staple cartridge, the auxiliary membrane is pre-fixed to the anvil and staple cartridge. The fixing structure is rendered ineffective by using a pusher slider and a cutter, thereby causing the auxiliary membrane to detach from the stapler head. This optimizes the operation steps and costs, and improves surgical efficiency.

[0009] To solve the above-mentioned technical problems, the present invention provides a surgical stapler assembly with an auxiliary membrane, comprising: a staple cartridge assembly and an anvil assembly. The staple cartridge assembly includes: a staple cartridge body, a staple cartridge cover, and a staple cartridge auxiliary membrane. A limiting boss for the staple cartridge auxiliary membrane is provided at the rear end of the staple cartridge body. The staple cartridge auxiliary membrane is pre-connected to the staple cartridge body, and its tail end is limited and fixed by the limiting boss.

[0010] The staple cartridge cover is inserted into the staple cartridge body when the stapler assembly is in the initial position to press the head of the staple cartridge auxiliary membrane. The staple cartridge cover is released from the staple cartridge body when the stapler assembly is in the firing position to allow the head of the staple cartridge auxiliary membrane to disengage from the pressing position.

[0011] The anvil assembly includes an anvil, an anvil holder clip, and an anvil auxiliary film. The rear end of the anvil has a limiting groove for the anvil auxiliary film. The anvil auxiliary film is pre-connected to the anvil, and its tail end is limited and fixed by the limiting groove.

[0012] The anvil holder is inserted into the anvil when the stapler assembly is in the initial position to press the head of the anvil auxiliary membrane. When the stapler assembly is in the firing position, the anvil holder is released from the anvil to disengage the head of the anvil auxiliary membrane from the pressing position.

[0013] In a preferred embodiment of the present invention, the front end of the staple cartridge body is provided with a cover groove that can accommodate the staple cartridge cover, and the staple cartridge cover can be inserted into the cover groove to form a detachable connection with the staple cartridge body.

[0014] In a preferred embodiment of this utility model, the staple cartridge cover includes a main rib and two side ribs. The two side ribs are located on both sides of the main rib and are arranged parallel to the main rib. The rear end of the main rib is provided with a guide portion for guiding the staple cartridge cover into the cover groove. The upper edge of the guide portion has a chamfer. The guide portion is provided with reinforcing limiting platforms on both sides. The outer wall surfaces of the two side ribs cooperate with the side wall of the cover groove when the staple cartridge cover is inserted into the cover groove to press down the staple cartridge auxiliary membrane.

[0015] In a preferred embodiment of this utility model, the chamfer of the guide portion is a bevel or a circular arc surface.

[0016] In a preferred embodiment of the present invention, the front end of the anvil holder is provided with a slot that can accommodate the anvil holder, and the anvil holder can be inserted into the slot to form a detachable connection with the anvil.

[0017] In a preferred embodiment of this utility model, the anvil holder includes a central component and two side components. The two side components are located on both sides of the central component and are arranged parallel to the central component. The central component has a pressing rib at its bottom front end, which is used to cooperate with the bottom wall of the slot to press down the anvil cartridge auxiliary membrane when the anvil holder is inserted into the slot. The central component has a buffer boss at its bottom rear end, and the two side components have side bosses at their rear ends, which are used to limit the engagement of the anvil holder with the slot when the anvil holder is inserted into the anvil.

[0018] In a preferred embodiment of this utility model, the cross-section of the clamping rib is trapezoidal, rectangular, or arc-shaped.

[0019] In a preferred embodiment of the present invention, the anvil seat auxiliary membrane limiting groove is a U-shaped groove and is fixed to the rear end of the anvil seat by welding.

[0020] In a preferred embodiment of this utility model, when the stapler assembly is in the initial position: the staple cartridge cover is inserted into the cover groove of the staple cartridge body, and is limited by the guide part and the reinforcing limiting platform, and the outer wall surface of the two side ribs is engaged with the side wall of the cover groove to press and fix the head of the staple cartridge auxiliary membrane; the anvil holder is inserted into the slot of the anvil holder, and the staple cartridge auxiliary membrane is pressed by the engagement of the pressing rib with the bottom wall of the slot, while the side boss is limited by the slot.

[0021] When the stapler assembly is in the firing position: the guide part and the reinforcing limiting platform on the staple cartridge cover disengage from their original fixed positions, and the staple cartridge cover is detached from the staple cartridge body; the side boss of the anvil holder is deformed by the thrust and disengages from its original fixed position on the slot wall, and the anvil holder is detached from the anvil.

[0022] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide a stapler, including the stapler assembly with an auxiliary membrane.

[0023] The beneficial effects of this invention are as follows: By adding a fixing structure to the anvil and staple cartridge, the auxiliary membrane can be precisely positioned in advance without additional operation during surgery; after tissue anastomosis and separation, the fixing structure automatically fails, allowing the patch to easily detach from the laparoscopic stapler head, simplifying the surgical procedure, eliminating the tedious removal of traditional fixation sutures, and greatly improving surgical efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0025] Figure 1 This is a schematic diagram of a preferred embodiment of the anastomosis device assembly with an auxiliary membrane of the present invention;

[0026] Figure 2 This is a schematic diagram of a preferred embodiment of the staple cartridge body of this utility model;

[0027] Figure 3 This is a schematic diagram of a preferred embodiment of the staple cartridge auxiliary membrane fixed to the staple cartridge body;

[0028] Figure 4 This is a schematic diagram of a preferred embodiment of the nail cartridge cover of this utility model;

[0029] Figure 5 This is a schematic diagram of the staple cartridge cover of this utility model in its initial position;

[0030] Figure 6 This is a schematic diagram of the nail cartridge cover of this utility model in the firing position;

[0031] Figure 7 This is a schematic diagram of a preferred embodiment of the anvil of this utility model;

[0032] Figure 8 This is a schematic diagram of a preferred embodiment of the anvil seat auxiliary film fixed to the anvil seat according to the present invention;

[0033] Figure 9 This is a schematic diagram of a preferred embodiment of the anvil holder of this utility model;

[0034] Figure 10 This is a structural schematic diagram of the anvil holder of this utility model in its initial position;

[0035] Figure 11 This is a structural schematic diagram of the anti-pin holder of this utility model in the firing position;

[0036] The components in the attached diagram are labeled as follows:

[0037] 100. Staple cartridge assembly; 110. Staple cartridge body; 111. Cover groove; 120. Staple cartridge cover; 121. Main rib position; 122. Side rib position; 123. Guide part; 124. Chamfer; 125. Reinforcing limiting platform; 130. Staple cartridge auxiliary membrane; 140. Staple cartridge auxiliary membrane limiting boss.

[0038] 200, Anchor assembly; 210, Anchor; 211, Slot; 220, Anchor clip; 221, Central component; 222, Side component; 223, Pressure rib; 224, Buffer boss; 225, Side boss; 230, Anchor auxiliary membrane; 240, Anchor auxiliary membrane limiting groove. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] This utility model relates to an anastomosis device assembly with an auxiliary membrane, including the following embodiments:

[0042] Please see Figure 1 An anastomosis device assembly with an auxiliary membrane includes: a staple cartridge assembly 100, an anvil assembly 200, and a cutting blade. The anvil assembly 200 is rotatably connected to the staple cartridge assembly 100. A staple pusher slider is installed inside the staple cartridge assembly 100. When the anastomosis device assembly is working, the cutting blade is fired and moves synchronously with the staple pusher slider to achieve cutting and anastomosis.

[0043] Specifically, such as Figure 2-4 As shown, the staple cartridge assembly 100 includes a staple cartridge body 110, a staple cartridge cover 120, and a staple cartridge auxiliary membrane 130. The staple cartridge body 110 has a staple cartridge auxiliary membrane limiting boss 140 at its rear end, which is used to limit the movement of the tail of the staple cartridge auxiliary membrane 130. The staple cartridge body 110 has a cover groove 111 at its front end, which is used to accommodate the staple cartridge cover 120 and form a detachable connection with the staple cartridge cover 120. The staple cartridge auxiliary membrane 130 is pre-connected to the staple cartridge body 110, and its tail is limited and fixed by the staple cartridge auxiliary membrane limiting boss 140. Its head is pressed by the staple cartridge cover 120 in the initial position.

[0044] A nail pusher slider is installed inside the nail cartridge body 110. When the nail pusher slider slides relative to the nail cartridge body 110, it can drive the nail cartridge cover to move between the initial position and the firing position.

[0045] The staple cartridge cover 120 is inserted into the staple cartridge body 110 when the stapler assembly is in the initial position to press the head of the staple cartridge auxiliary membrane 130. When the stapler assembly is in the firing position, the staple cartridge cover 120 is released from the staple cartridge body 110 to allow the head of the staple cartridge auxiliary membrane 130 to disengage from the pressing position.

[0046] In detail, the nail chamber cover 120 includes a main rib position 121 and two side rib positions 122. The two side rib positions 122 are located on both sides of the main rib position 121 and are arranged parallel to the main rib position 121.

[0047] First, a guide portion 123 is provided at the rear end of the main rib position 121 to guide the staple cartridge cover 120 into the cover groove 111 of the staple cartridge body 110; the upper edge of the guide portion 123 has a chamfer 124 to reduce the resistance when the staple cartridge cover 120 is inserted into the staple cartridge body 110 and improve the smoothness of operation; the guide portion 123 is provided on both sides with a reinforcing limiting platform 125 to enhance the structural strength of the guide portion 123 and limit the insertion position of the staple cartridge cover 120 to prevent it from being over-inserted or loosened.

[0048] Furthermore, the chamfer 124 is preferably a bevel or a circular arc to balance insertion resistance and structural strength.

[0049] Secondly, the outer wall surfaces of the two side rib positions 122 cooperate with the side wall of the cover groove 111 when the staple cartridge cover 120 is inserted into the cover groove 111 to press the staple cartridge auxiliary membrane 130 and ensure the stability of the staple cartridge auxiliary membrane 130 in the initial position.

[0050] The operating principle of the above-mentioned staple cartridge component is as follows:

[0051] like Figure 5 As shown, the staple cartridge cover is in its initial position:

[0052] The staple cartridge cover 120 is inserted into the cover groove 111 of the staple cartridge body. The guide part 123 and the reinforcing limiting platform 125 ensure the limiting fit between the staple cartridge cover 120 and the cover groove 111. The outer wall surface of the two side ribs 122 fits with the side wall of the cover groove 111 to press and fix the head of the staple cartridge auxiliary membrane 130.

[0053] like Figure 6 As shown, when the stapler assembly is fired, the cutting blade and the staple pusher slider move, and the staple cartridge cover 120 is moved to the firing position. At this time, the cutting blade cuts the staple cartridge auxiliary membrane 130, and at the same time, the guide part 123 and the reinforcing limiting platform 125 disengage from their original fixed positions. The staple cartridge cover 120 is released from the staple cartridge body 110, causing the function of the staple cartridge cover 120 in pressing the staple cartridge auxiliary membrane 130 to fail, and the staple cartridge auxiliary membrane 130 is released from the staple cartridge body.

[0054] Specifically, such as Figure 7-9 As shown, the anvil assembly 200 includes an anvil 210, an anvil retainer 220, and an anvil auxiliary film 230. The rear end of the anvil 210 is provided with an anvil auxiliary film limiting groove 240 to limit the movement of the tail of the anvil auxiliary film 230. The front end of the anvil 210 is provided with a retaining groove 211 to accommodate the anvil retainer 220 and form a detachable connection with the anvil retainer 220. The anvil auxiliary film 230 is pre-connected to the anvil 210, and its tail is limited and fixed by the anvil auxiliary film limiting groove 240. Its head is pressed by the anvil retainer 220 in the initial position.

[0055] Furthermore, the anvil auxiliary film limiting groove 240 is a U-shaped groove with its opening facing the front end of the anvil, used to accommodate and restrict the movement of the tail end of the anvil auxiliary film 230. The U-shaped groove is fixed to the rear end of the anvil 210 by welding to ensure its structural strength and stability.

[0056] The anvil holder 220 is inserted into the anvil 210 when the stapler assembly is in the initial position to press the head of the anvil auxiliary membrane 230; the anvil holder 220 is released from the anvil 210 when the stapler assembly is in the firing position to disengage the head of the anvil auxiliary membrane 230 from the pressing position.

[0057] In detail, the anchor holder 220 includes a central component 221 and two side components 222. The two side components 222 are located on both sides of the central component 221 and are arranged parallel to the central component 221.

[0058] First, the bottom front end of the central component 221 is provided with a pressing rib 223, which is used to cooperate with the bottom wall of the slot 211 when the pin seat clip 220 is inserted into the slot 211 to press down the pin cartridge auxiliary film 230 and ensure its position is fixed.

[0059] Furthermore, the cross-section of the clamping rib 223 is preferably trapezoidal, rectangular, or arc-shaped to enhance the contact area and clamping effect with the bottom wall of the card 211.

[0060] The central component 221 has a buffer boss 224 at its bottom rear end, which is used to reduce the retraction force of the anvil during firing, thereby improving the stability and safety of operation.

[0061] Secondly, the two side components 222 have side bosses 225 at their rear ends, which are used to limit the engagement of the pin holder 220 with the wall of the slot 211 when the pin holder 220 is inserted into the pin holder 210, so as to prevent the pin holder from being over-inserted or loosened.

[0062] The operating principle of the above-mentioned anvil assembly is as follows:

[0063] like Figure 10 As shown, the anvil holder 220 is in its initial position:

[0064] The anvil holder 220 is inserted into the slot 211 of the anvil holder 210. The clamping rib 223 and the bottom wall of the slot 211 are used to clamp the anvil cartridge auxiliary membrane 230. At the same time, the side boss 225 and the slot 211 are used to limit the fixation of the anvil holder 220 and the anvil holder 210.

[0065] like Figure 11 As shown, when the anvil is in the firing position:

[0066] The anvil holder 220 is pushed to the firing position by the cutting blade. At this time, the cutting blade cuts the anvil holder auxiliary membrane 230. At the same time, the side boss 225 is deformed by the thrust and disengages from the original fixed position on the wall of the slot 211. The anvil holder 220 and the anvil 210 are released, causing the function of the anvil holder 220 to press the anvil holder auxiliary membrane 230 to fail, and the anvil holder auxiliary membrane 230 is released from the anvil 210.

[0067] This utility model also relates to a laparoscopic anastomosis device, which includes the aforementioned anastomosis device assembly with an auxiliary membrane. By adding corresponding auxiliary membrane fixation structures to the anvil and the staple cartridge, and then using a pusher slider and a cutter to disable the fixation structures, the auxiliary membrane is detached from the anastomosis device assembly, thereby optimizing the operation steps and costs and improving surgical efficiency.

[0068] The beneficial effects of this utility model of anastomosis device assembly with auxiliary membrane and laparoscopic anastomosis device are:

[0069] By adding corresponding fixation structures to the anvil and the staple cartridge, the auxiliary membrane is pre-fixed to the anvil and the staple cartridge, and the precise positioning of the auxiliary membrane can be achieved without additional operation during the operation.

[0070] After the anastomosis and separation of the tissues are completed, the function of the fixation structure in holding the patch in place under mechanical action automatically fails, allowing the auxiliary membrane to detach smoothly from the laparoscopic stapler head.

[0071] It simplifies the surgical procedure, avoids the cumbersome process of removing traditional fixation sutures, improves surgical efficiency, and reduces the difficulty and time of operation, bringing greater convenience and reliability to clinical practice.

[0072] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An anastomosis device assembly with an auxiliary membrane, comprising: The staple cartridge assembly and the staple anchor assembly are characterized in that, The staple cartridge assembly includes: a staple cartridge body, a staple cartridge cover, and a staple cartridge auxiliary film. The staple cartridge body has a limiting boss for the staple cartridge auxiliary film at its rear end. The staple cartridge auxiliary film is pre-connected to the staple cartridge body, and its tail end is limited and fixed by the limiting boss. The staple cartridge cover is inserted into the staple cartridge body when the stapler assembly is in its initial position, and is used to press the head of the staple cartridge auxiliary membrane. The staple cartridge cover is detached from the staple cartridge body when the stapler assembly is in the firing position, which is used to disengage the head of the staple cartridge auxiliary membrane from the clamping position. The anvil assembly includes an anvil, an anvil holder clip, and an anvil auxiliary film. The rear end of the anvil has a limiting groove for the anvil auxiliary film. The anvil auxiliary film is pre-connected to the anvil, and its tail end is limited and fixed by the limiting groove. The anvil holder engages with the anvil when the stapler assembly is in its initial position, and is used to press the anvil auxiliary membrane head against the anvil. The anvil holder is disengaged from the anvil when the stapler assembly is in the firing position, thereby disengaging the anvil auxiliary membrane head from the clamping position.

2. The anastomosis device assembly with an auxiliary membrane according to claim 1, characterized in that, The front end of the staple cartridge body is provided with a cover groove that can accommodate the staple cartridge cover. The staple cartridge cover can be inserted into the cover groove to form a detachable connection with the staple cartridge body.

3. The anastomosis device assembly with an auxiliary membrane according to claim 2, characterized in that, The staple cartridge cover includes a main rib and side ribs, with the two side ribs located on both sides of the main rib and arranged parallel to the main rib. The rear end of the main rib is provided with a guide portion for guiding the nail cartridge cover into the cover groove, and the upper edge of the guide portion has a chamfer; The guide section is provided with reinforced limiting platforms on both sides. The outer wall surfaces of the two side ribs cooperate with the side wall of the cover groove when the staple cartridge cover is inserted into the cover groove to press down the staple cartridge auxiliary membrane.

4. The anastomosis device assembly with an auxiliary membrane according to claim 3, characterized in that, The chamfer of the guide part is a bevel or a circular arc.

5. The anastomosis device assembly with an auxiliary membrane according to claim 1, characterized in that, The front end of the anvil holder is provided with a slot that can accommodate the anvil holder, and the anvil holder can be inserted into the slot to form a detachable connection with the anvil.

6. The anastomosis device assembly with an auxiliary membrane according to claim 5, characterized in that, The anvil holder includes a central component and two side components, with the two side components located on either side of the central component and arranged parallel to the central component. The central component has a clamping rib at its bottom front end, which cooperates with the bottom wall of the slot to press down the staple cartridge auxiliary membrane when the anvil is inserted into the slot. The central component also has a buffer boss at its bottom rear end. The two side components have side bosses at their rear ends, which are used to limit the engagement of the anti-pin holder with the slot when the anti-pin holder is inserted into the anti-pin holder.

7. The anastomosis device assembly with an auxiliary membrane according to claim 6, characterized in that, The cross-section of the clamping rib is trapezoidal, rectangular, or arc-shaped.

8. The anastomosis device assembly with an auxiliary membrane according to claim 1, characterized in that, The anvil seat auxiliary membrane limiting groove is a U-shaped groove and is fixed to the rear end of the anvil seat by welding.

9. The anastomosis device assembly with an auxiliary membrane according to claim 1, characterized in that, When the stapler assembly is in its initial position: The staple cartridge cover is inserted into the cover groove of the staple cartridge body. It is limited by the guide part and the reinforcing limiting platform. The outer wall surface of the two side ribs is engaged with the side wall of the cover groove to press and fix the head of the staple cartridge auxiliary membrane. The anvil holder is inserted into the slot of the anvil holder. It presses the staple cartridge auxiliary membrane by the engagement of the pressing rib and the bottom wall of the slot. At the same time, the side boss is limited by the slot. When the stapler assembly is in the firing position: The guide section and reinforcing limiting platform on the staple cartridge cover disengage from their original fixed positions, causing the staple cartridge cover to detach from the staple cartridge body; the side protrusion of the anvil holder is deformed by the thrust and disengages from its original fixed position on the slot wall, causing the anvil holder to detach from the anvil.

10. A laparoscopic anastomosis device, characterized in that, Includes an anastomosis device assembly with an auxiliary membrane as described in any one of claims 1-9.

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