Endoscope anastomat abutting nail seat and endoscope anastomat
By employing a cross-arranged staple groove combination structure on the anvil of the laparoscopic stapler, the problems of bleeding and airtightness of the laparoscopic stapler when facing different tissues are solved, resulting in a tighter suture effect and a lower risk of complications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI BM PRECISION PARTS CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
Existing laparoscopic anastomotic devices are prone to complications such as anastomotic bleeding, poor airtightness, and anastomotic leakage when faced with different individual patient differences and complex clinical needs, which affect the surgical outcome and recovery period.
A laparoscopic stapler anvil is designed, which adopts a cross-arranged staple groove combination structure, including multiple rows of staple grooves symmetrically arranged with the blade groove as the center. The staple groove combination forms an interlaced or orthogonal suture line to adapt to different tissue thicknesses and fragility, ensuring suture tightness and airtightness.
It significantly improved the suturing effect, reduced the risk of leakage and bleeding, enhanced the airtightness and tightness of the sutures during surgery, and reduced the occurrence of complications.
Smart Images
Figure CN224484074U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to an anvil seat and an endoscopic anastomosis device. Background Technology
[0002] As a core instrument for minimally invasive surgery, the laparoscopic stapler replaces traditional manual suturing. Through titanium staple anastomosis technology, it effectively replaces traditional manual suturing and has significant advantages such as simple operation and short operation time.
[0003] Laparoscopic staplers, widely used in minimally invasive surgery, face significant challenges in clinical practice. For example... Figure 1 As shown, the staple grooves of commonly used laparoscopic staplers currently employ a single horizontal staple groove structure. Due to significant individual differences among patients, including variations in body size, lesion tissue thickness, and changes in the intraoperative fluid environment, the following problems often arise when facing complex clinical needs:
[0004] 1) After tissue suturing, anastomotic bleeding occurs under certain pressure; 2) Poor air tightness maintenance; 3) In severe cases, complications such as anastomotic leakage may develop.
[0005] These issues not only directly affect the immediate outcome of the surgery, but also prolong the patient's postoperative recovery period and increase medical risks.
[0006] Therefore, there is an urgent need for an anvil that can adapt to the characteristics of different tissues. Utility Model Content
[0007] The main technical problem solved by this utility model is to provide a laparoscopic stapler anvil and laparoscopic stapler. By optimizing the arrangement of staple slots, the suture sutures can be made tighter, ensuring the airtightness and connection tightness of the suture site. It can cope with complex tissue environments, adapt to suturing tissues of uneven thickness, enhance the effect, significantly reduce the risk of tissue leakage or bleeding, reduce complications, and improve the surgical suturing effect.
[0008] To solve the above-mentioned technical problems, the present invention provides a technical solution: an anvil for a laparoscopic anastomosis device, comprising: an anvil body, wherein a cutting groove is provided in the middle of the anvil body for a cutting blade to slide in, and at least four rows of staple grooves are provided on the surface of the anvil body, which are symmetrically arranged around the cutting groove, wherein at least two rows of adjacent staple grooves in the staple groove group are arranged in a cross direction.
[0009] In a preferred embodiment of this utility model, the nail groove assembly comprises, from the inside to the outside:
[0010] The fifth and sixth rows of nail slots are symmetrically arranged adjacent to the blade slot;
[0011] The second row of nail slots located outside the fifth row of nail slots, and the first row of nail slots located outside the second row of nail slots;
[0012] The fourth row of nail slots located outside the sixth row of nail slots, and the third row of nail slots located outside the fourth row of nail slots;
[0013] The first row of nail slots and the second row of nail slots are arranged in a cross arrangement, the third row of nail slots and the fourth row of nail slots are arranged in a cross arrangement, and the fifth row of nail slots and the sixth row of nail slots are parallel to the extension direction of the blade groove.
[0014] In a preferred embodiment of the present invention, the included angle between the axes of the first row of nail slots and the second row of nail slots is A, and the included angle between the axes of the third row of nail slots and the fourth row of nail slots is B, wherein A=B, and the range of A and B is 30°-60°.
[0015] In a preferred embodiment of this utility model, the included angles A and B of the axes are 50°.
[0016] In a preferred embodiment of this utility model, the nail groove assembly comprises, from the inside to the outside:
[0017] The second and fourth rows of nail slots are symmetrically arranged adjacent to the blade slot;
[0018] The first row of nail slots is located outside the second row of nail slots;
[0019] The third row of nail slots is located outside the fourth row of nail slots;
[0020] The first row of nail slots and the second row of nail slots are arranged in a cross arrangement, and the third row of nail slots and the fourth row of nail slots are arranged in a cross arrangement.
[0021] In a preferred embodiment of the present invention, the included angle between the axes of the first row of nail slots and the second row of nail slots is C, and the included angle between the axes of the third row of nail slots and the fourth row of nail slots is D, wherein C=D, and the range of C and D is 70°-110°.
[0022] In a preferred embodiment of this utility model, the included angles C and D of the axes are 90°.
[0023] In a preferred embodiment of the present invention, each of the nail grooves has a double teardrop shape, consisting of two connected teardrop shapes.
[0024] In a preferred embodiment of this utility model, the center-to-center distance between two adjacent nail slots in the same row is 2-6 mm.
[0025] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is: to provide a laparoscopic anastomosis device, including a staple cartridge assembly and the aforementioned anvil, wherein the staple hole distribution of the staple cartridge assembly matches the staple groove position of the anvil body.
[0026] The beneficial effects of this invention are: when anastomosing tissues, it can produce a tighter suture effect for tissues with uneven thickness and inconsistent fragility, making the entire nail line tighter, ensuring the airtightness and tightness of the suture. Compared with the traditional uniform arrangement method, it can improve the airtightness by about 35-50%, significantly reduce the risk of tissue leakage or bleeding, cope with the complex tissue environment during surgery, reduce the risk of leakage and bleeding complications in various surgical procedures, and significantly improve the surgical suturing effect. Attached Figure Description
[0027] 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:
[0028] Figure 1 This is a schematic diagram of a preferred embodiment of the anvil of a laparoscopic stapler in the prior art;
[0029] Figure 2 This is a structural schematic diagram of Embodiment 1 of the present invention;
[0030] Figure 3 This is a schematic diagram of the structure when the included angles A and B of the axes are 50° in Embodiment 1 of this utility model;
[0031] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model;
[0032] Figure 5 This is a schematic diagram of the structure when the included angles C and D of the axes are 90° in Embodiment 2 of this utility model;
[0033] The components in the attached diagram are labeled as follows:
[0034] 1. First row of nail slots; 2. Second row of nail slots; 3. Third row of nail slots; 4. Fourth row of nail slots; 5. Fifth row of nail slots; 6. Sixth row of nail slots; 7. Nail anchor body; 8. Knife slot. Detailed Implementation
[0035] 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.
[0036] 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. Example 1:
[0037] like Figure 2-3 As shown, a laparoscopic anastomosis device anvil includes: an anvil body 7, the anvil body 7 having a cutting groove 8 in the middle for a cutting blade to slide through, and the surface of the anvil body 7 having six rows of staple grooves symmetrically arranged around the cutting groove 8.
[0038] Specifically, the nail groove group includes, from the inside out, a fifth row of nail grooves 5 and a sixth row of nail grooves 6 symmetrically arranged adjacent to the blade groove 8.
[0039] The second row of nail slots 2 located outside the fifth row of nail slots 5, and the first row of nail slots 1 located outside the second row of nail slots 2;
[0040] The fourth row of nail slots 4 is located outside the sixth row of nail slots 6, and the third row of nail slots 3 is located outside the fourth row of nail slots 4.
[0041] Furthermore, the first row of nail grooves 1 and the second row of nail grooves 2 are arranged in a cross pattern, and the third row of nail grooves 3 and the fourth row of nail grooves 4 are arranged in a cross pattern, so that the titanium nails form an interlaced suture line after being fired.
[0042] Furthermore, the fifth row of nail grooves 5 and the sixth row of nail grooves 6 are parallel to the extension direction of the blade groove, and these two rows of nail grooves are located closest to the cutting area.
[0043] In detail, the titanium nails in the fifth and sixth rows of nail grooves, which are parallel to the extension direction of the blade groove, are fired to form a straight basic suture line, providing initial fixation;
[0044] After the titanium staples in the first and second rows of intersecting staple grooves and the third and fourth rows of intersecting staple grooves are fired, they form an interlaced, inclined suture line, which together with the basic suture line constitutes a three-dimensional suture network.
[0045] This combination of staple grooves makes the distribution of titanium staples within the tissue more uniform after firing. When anastomosing tissues, it produces a tighter suture effect for tissues with uneven thickness and inconsistent fragility, making the entire staple line tighter and ensuring the airtightness and tightness of the suture. Compared with the traditional uniform arrangement method, it can improve the airtightness by about 35-50%, and significantly reduce the risk of tissue leakage or bleeding.
[0046] Furthermore, the included angle between the axes of the first row of nail slots 1 and the second row of nail slots 2 is A, and the included angle between the axes of the third row of nail slots 3 and the fourth row of nail slots 4 is B, where A=B, and the range of A and B is 30°-60°.
[0047] Preferably, the included angles A and B of the axes are 40°, 50° or 60° to accommodate tissues of different thicknesses.
[0048] When the tissue is thicker, a larger cross angle can be used to form a wider X-shaped suture structure, which can increase the span of the titanium staples, enhance the suture effect of the titanium staples, avoid excessive compression that could lead to tissue ischemia, and reduce bleeding.
[0049] When the tissue is thin, a smaller crossing angle is used to form a denser suture line, which enhances the suturing force on the fragile tissue. Example 2:
[0050] like Figure 4-5 As shown, a laparoscopic anastomosis device anvil includes: an anvil body 7, the anvil body 7 having a cutting groove 8 in the middle for a cutting blade to slide through, and the surface of the anvil body 7 having four rows of staple grooves symmetrically arranged around the cutting groove 8.
[0051] Specifically, the nail groove group includes, from the inside out: a second row of nail grooves 2 and a fourth row of nail grooves 4 arranged symmetrically adjacent to the knife groove, a first row of nail grooves 1 located outside the second row of nail grooves 2, and a third row of nail grooves 3 located outside the fourth row of nail grooves 4.
[0052] Furthermore, the first row of nail grooves 1 and the second row of nail grooves 2 are arranged in a cross pattern, and the third row of nail grooves 3 and the fourth row of nail grooves 4 are arranged in a cross pattern. The cross-arranged nail grooves cause the titanium nails to form a completely interlaced suture line after firing.
[0053] Furthermore, the included angle between the axes of the first row of nail slots 1 and the second row of nail slots 2 is C, and the included angle between the axes of the third row of nail slots 3 and the fourth row of nail slots 4 is D, where C=D, and the range of C and D is 70°-110°.
[0054] Preferably, the included angles C and D of the axes are 90°.
[0055] When the angle between the axes of the first row of staple grooves 1 and the second row of staple grooves 2 is 90°, and the angle between the axes of the third row of staple grooves 3 and the fourth row of staple grooves 4 is 90°, the fired titanium staples will form a completely orthogonal suture network, which can adapt to tissues with uneven thickness and avoid poor local adhesion caused by traditional parallel sutures. Example 3:
[0056] An endoscopic stapler includes a staple cartridge assembly and an anvil. The anvil includes an anvil body 7, with a cutting groove 8 in the middle for a cutting blade to slide through. The surface of the anvil body 7 is provided with at least four rows of staple grooves symmetrically arranged around the cutting groove 8.
[0057] In the nail slot group, at least two rows of adjacent nail slots are arranged in a cross direction, and the nail hole distribution of the nail cartridge assembly matches the nail slot position of the nail seat body.
[0058] Furthermore, the nail groove group is preferably the nail groove group distribution structure in Embodiment 1 or Embodiment 2.
[0059] In addition, in Embodiment 1 or Embodiment 2, the outline of each nail groove is double teardrop-shaped, consisting of two connected teardrop-shaped structures, to improve the stability of titanium nail forming.
[0060] Furthermore, the center-to-center spacing of adjacent lateral staple grooves in the same row is 2-6 mm to ensure uniform suture density while also considering tissue adaptability. 4 mm is preferred.
[0061] Based on the above, when anastomosing tissues, it can adaptively suture tissues that are uneven in thickness and fragile, resulting in a tighter suture effect, significantly reducing the risk of tissue leakage or bleeding, as well as the occurrence of postoperative complications.
[0062] The beneficial effects of the anvil seat and laparoscopic anastomosis device of this utility model are:
[0063] By optimizing the arrangement of the staple grooves, the distribution of the suture staples can be made more compact, effectively ensuring the airtightness and tightness of the suture site; providing excellent staple integrity for dealing with complex tissue environments during surgery, and reducing the risk of leakage and bleeding complications in various surgical procedures;
[0064] For tissues of uneven thickness and inconsistent fragility, it can adaptively suture, producing a tighter suture effect; especially for thicker tissues, it can enhance the suture effect of titanium screws and the airtightness of the tissue, reduce tissue bleeding and anastomotic leakage, ensure the suture effect of the tissue, and significantly improve the surgical suture effect.
[0065] 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. A laparoscopic stapler anvil, comprising: The anvil body, wherein the anvil body has a cutting groove in the middle for sliding of a cutting blade, is characterized in that... The surface of the anvil body is provided with at least four rows of nail slots symmetrically arranged around the knife groove, and at least two rows of adjacent nail slots in the nail slot group are arranged in a cross direction.
2. The anvil of the laparoscopic anastomosis device according to claim 1, characterized in that, The nail groove group, from the inside out, includes: The fifth and sixth rows of nail slots are symmetrically arranged adjacent to the blade slot; The second row of nail slots located outside the fifth row of nail slots, and the first row of nail slots located outside the second row of nail slots; The fourth row of nail slots located outside the sixth row of nail slots, and the third row of nail slots located outside the fourth row of nail slots; The first row of nail slots and the second row of nail slots are arranged in a cross arrangement, the third row of nail slots and the fourth row of nail slots are arranged in a cross arrangement, and the fifth row of nail slots and the sixth row of nail slots are parallel to the extension direction of the blade groove.
3. The anvil of the laparoscopic anastomosis device according to claim 2, characterized in that, The included angle between the axes of the first row of nail slots and the second row of nail slots is A, and the included angle between the axes of the third row of nail slots and the fourth row of nail slots is B, where A=B, and the range of A and B is 30°-60°.
4. The anvil of the laparoscopic anastomosis device according to claim 3, characterized in that, The included angles A and B of the axes are 50°.
5. The anvil of the laparoscopic anastomosis device according to claim 1, characterized in that, The nail groove group, from the inside out, includes: The second and fourth rows of nail slots are symmetrically arranged adjacent to the blade slot; The first row of nail slots is located outside the second row of nail slots; The third row of nail slots is located outside the fourth row of nail slots; The first row of nail slots and the second row of nail slots are arranged in a cross arrangement, and the third row of nail slots and the fourth row of nail slots are arranged in a cross arrangement.
6. The anvil of the laparoscopic anastomosis device according to claim 5, characterized in that, The included angle between the axes of the first row of nail slots and the second row of nail slots is C, and the included angle between the axes of the third row of nail slots and the fourth row of nail slots is D, where C=D, and the range of C and D is 70°-110°.
7. The anvil of the laparoscopic anastomosis device according to claim 6, characterized in that, The included angles C and D of the axes are 90°.
8. The anvil of the laparoscopic anastomosis device according to claim 1, characterized in that, Each of the nail grooves has a double teardrop shape, consisting of two connected teardrop shapes.
9. The anvil of the laparoscopic anastomosis device according to claim 8, characterized in that, The center-to-center distance between two adjacent nail slots in the same horizontal row is 2-6mm.
10. A laparoscopic anastomosis device, characterized in that, It includes a staple cartridge assembly and a stapler seat as described in any one of claims 1-9, wherein the staple hole distribution of the staple cartridge assembly matches the staple groove position of the stapler seat body.