Nail abutting seat and anastomat adopting nail abutting seat

Abstract

The utility model discloses a nail abutting seat and an anastomat with the nail abutting seat. The nail abutting seat comprises a nail abutting seat base body, a first knife groove, at least two sets of first nail grooves and two sets of anti-skid assemblies, and the nail abutting seat base body is provided with a nail abutting face. The cutting knife passes through the first knife groove, and the nail abutting surface is divided into two parts; the at least two groups of first nail grooves are respectively formed in the two parts of the nail propping surface; each group of first nail grooves is composed of a plurality of first grooves which are arranged at intervals along the extension direction of the first knife groove; the two anti-skid assemblies are arranged on the outer edges of the two parts of the nail abutting face respectively, and each anti-skid assembly is composed of a plurality of anti-skid protrusions arranged at intervals in the horizontal extending direction of the first cutter groove; the anti-skidding protrusions are in a long strip shape. The friction force is increased through the anti-skid protrusions, and the slippage phenomenon between the nail abutting base and the to-be-cut tissue can be reduced; and liquid drainage grooves are formed among the anti-skid bulges, so that squeezed liquid can be drained out of the clamping surfaces of the nail propping seat and the nail bin seat, and smooth cutting operation and nail forming are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to an anvil and an anastomosis device using the anvil. Background Art

[0002] In the field of medical devices, especially in surgical procedures, the anvil is a crucial component of the stapler. A stapler is a device used to replace manual suturing. Its working principle is to use titanium staples to separate or staple tissue, similar to a stapler. Staplers can be divided into various types based on their application, such as skin staplers, digestive tract circular staplers, and rectal staplers. The main function of the anvil is to support and secure the stapler magazine during operation, ensuring that the staples in the magazine can correctly separate and staple tissue. It typically works in conjunction with other components of the stapler, such as the staple pusher and stapler magazine, to achieve precise tissue suturing.

[0003] Because human tissue contains a large amount of tissue fluid and the tissue fluid is sticky, slippage is likely to occur between the tissue and the anvil during surgical anastomosis, thereby affecting the anastomosis effect, prolonging the operation time, and causing pain to the patient. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a stapler and a stapler using the stapler, which increases the contact area between the stapler and the tissue to be cut, and solves the problem of easy slippage between the tissue and the stapler during surgical anastomosis in the existing technology.

[0005] According to one aspect of the present application, an anvil is disclosed, the anvil comprising an anvil base having an anvil surface;

[0006] a first knife groove for a cutting knife to pass through, the first knife groove extending from the anvil surface along the length direction and thickness direction of the anvil base, dividing the anvil surface into two parts;

[0007] and at least two groups of first nail grooves, wherein the at least two groups of first nail grooves are respectively provided on two parts of the abutment surface;

[0008] Each group of the first nail grooves is composed of a plurality of first grooves arranged at intervals along the extending direction of the first knife groove, a first partition is formed between two adjacent first grooves, and the top of the first partition is flush with the nail support surface;

[0009] Two groups of anti-slip components are respectively arranged on the outer edges of the two parts of the nail-resistant surface. Each group of anti-slip components is composed of a plurality of anti-slip protrusions arranged at intervals along the horizontal extension direction of the first knife groove; the anti-slip protrusions are in the shape of long strips extending vertically from the outer edge toward the direction of the first knife groove.

[0010] In some embodiments, each of the nail-stopping surfaces comprises a first base surface and a second base surface, both of which extend parallel to the first blade slot, the first base surface is higher than the second base surface, the first base surface is adjacent to the first blade slot, and a plurality of the anti-skid protrusions of the anti-skid assembly are arranged based on the second base surface, the top of the anti-skid protrusions is at the same height as the first base surface.

[0011] In some embodiments, at least one set of second nail slot assemblies is further arranged on the second base surface, each set of the second nail slot assemblies comprises at least one row of second nail slots, each row of the second nail slots is composed of a plurality of second grooves arranged at intervals along the direction of extension of the first blade slot, and a second partition plate is formed between adjacent two second grooves, the top of the second partition plate is flush with the second base surface.

[0012] In some embodiments, a plurality of sets of the first nail slot assemblies are arranged in parallel along the horizontal extension direction of the first blade slot in the first base surface, and the first nail slots in adjacent two sets of the first nail slot assemblies are arranged staggered in the direction perpendicular to the extension direction of the first blade slot.

[0013] In some embodiments, the nail-stopping seat further comprises wing panels arranged symmetrically on both sides of the nail-stopping seat base, and the wing panels are integrally formed with the nail-stopping seat base.

[0014] In some embodiments, the anti-skid protrusions have a target length, the target length of the anti-skid protrusions is the same as the horizontal maximum thickness of the wing panel, the side surface of the anti-skid protrusion is conical, and the conical top is arc-shaped, so that the gap between adjacent anti-skid protrusions gradually widens upward from the nail-stopping surface.

[0015] In some embodiments, the bottom width of the anti-skid protrusion is 0.5mm-1mm, the bottom width of the gap between adjacent two anti-skid protrusions is 0.3mm-0.6mm, and the measuring direction of the bottom width of the anti-skid protrusion and the bottom width of the gap between two anti-skid protrusions is parallel to the horizontal extension direction of the first blade slot.

[0016] In some embodiments, a first slope is formed between the first base surface and the second base surface, and the first slope is arranged at the end of the first base surface away from the wing panel.

[0017] In some embodiments, the nail-stopping seat further comprises a bottom surface, a second slope is formed between the second base surface and the bottom surface, and the second slope is arranged at the end of the second base surface away from the wing panel.

[0018] According to another aspect of the present application, an anastomat is also disclosed, which comprises the anvil seat and the cartridge structure of any one of the above, wherein the cartridge structure comprises a plurality of cartridge structures on the anastomosis surface, a plurality of isolation grooves between the cartridge structures, a second knife groove located in the middle of the cartridge surface, and a plurality of anti-skid protrusions located at the edge of the anastomosis surface; when the anvil seat is engaged with the cartridge structure, the anti-skid protrusions on the anastomosis surface are staggered in the horizontal direction with the plurality of anti-skid protrusions on the anvil seat.

[0019] In some embodiments, the second knife groove extends along the length direction and the horizontal direction of the anastomosis surface of the cartridge structure, the isolation grooves are between the plurality of cartridge structures, and the isolation grooves extend from the second knife groove to the anti-skid protrusions.

[0020] The present application includes but is not limited to the following advantages: (1) The present application provides anti-skid protrusions on the anvil surface, which increases the contact area between the anvil seat and the tissue to be cut, increases the friction between the anvil assembly and the tissue to be cut, and helps to reduce the sliding phenomenon between them; the anti-skid protrusions are in the form of long strips, and the anti-skid protrusions form drainage grooves between them, which can facilitate the extrusion of body fluids outside the clamping surface of the anvil seat and the cartridge seat, and facilitate the smooth operation of cutting and stapling;

[0021] (2) The anvil surface is designed to include a first base surface and a second base surface, and the height of the anti-skid protrusions is flush with the first base surface, which does not affect the stapling effect during anastomosis;

[0022] (3) The first base surface is higher than the second base surface, so that there is a height difference between the first base surface and the second base surface, which increases the contact area between the anvil seat and the tissue to be cut, further increases the friction between the anvil assembly and the tissue to be cut, and helps to reduce the sliding phenomenon between them;

[0023] (4) The present application can provide multiple sets of cartridge assembly, which increases the number of cartridge sets, provides more fixing point options for the anvil seat, and enhances its ability to adapt to different surgical needs;

[0024] (5) The wing plate and the anvil seat base are integrally formed. Integrally forming the wing plate and the anvil seat base can eliminate the connection interface between them, which can minimize stress concentration at the interface, improve the rigidity and anti-deformation ability of the entire fixing device, and further, the integrally forming process can reduce the assembly steps and improve the production efficiency;

[0025] (6) The first slope and the second slope provide a slow transition space for the anvil seat, which can make the anvil seat slowly enter the tissue along the slope, rather than directly collide with the vertical tissue surface, which is conducive to the smooth operation of cutting. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced.

[0027] Figure 1 is a structural schematic view of a nail abutting seat of an embodiment of the present application;

[0028] Figure 2 is another structural schematic view of the nail abutting seat of the embodiment of the present application;

[0029] Figure 3 is another structural schematic view of the nail abutting seat of the embodiment of the present application;

[0030] Figure 4 is Figure 3 an enlarged view of A in the figure;

[0031] Figure 5 is Figure 3 a plan view of the nail abutting seat;

[0032] Figure 6 is Figure 5 an enlarged view of B in the figure;

[0033] Figure 7 is a side view of the anastomat of the embodiment of the present application;

[0034] Figure 8 is Figure 7 an enlarged view of C in the figure;

[0035] Figure 9 is a top view of the nail cartridge of the embodiment of the present application;

[0036] In the figure, 1 is a nail abutting seat base body, 11 is a first base surface, 111 is a first knife groove, 112 is a first nail groove group, 113 is a first groove, 114 is a first partition plate, 12 is a second base surface, 121 is an anti-skid group, 122 is an anti-skid protrusion, 123 is a second nail groove group, 124 is a second groove, 125 is a second partition plate, 2 is a wing panel, 3 is a first slope, 4 is a second slope, 5 is a nail cartridge structure, 6 is an anastomosis surface, 7 is a second knife groove, 51 is an anti-skid protrusion, 52 is a nail cartridge, and 53 is an isolation groove. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0038] According to one aspect of the present application, the present application discloses a nail support, specifically, as Figures 1 to 6 As shown, the nail support includes a nail support base 1, a first knife groove 111, at least two groups of first nail grooves 112 and at least two groups of anti-slip components, wherein the nail support base 1 has a nail support surface, the first knife groove 111 is used for the cutting knife to pass through, extending from the nail support surface along the length direction and thickness direction of the nail support base, dividing the nail support surface into two parts, at least two groups of nail support grooves are respectively arranged on the two parts of the nail support surface, each group of first nail grooves 112 is communicated based on a plurality of first grooves 113 arranged at intervals along the extension direction of the first knife groove 111, a first partition 114 is formed between two adjacent first grooves 113, the top of the first partition 114 is flush with the top surface, at least two groups of anti-slip components are respectively arranged on the outer edges of the two parts of the nail support surface, each group of anti-slip components 121 is composed of a plurality of anti-slip protrusions 122 arranged at intervals along the horizontal extension direction of the first knife groove 111, and the anti-slip protrusions 122 are in the shape of long strips extending vertically from the outer edge to the direction of the first knife groove 111.

[0039] In one example, the anvil base 1 includes a first base surface 11 and a second base surface 12, the first base surface 11 is higher than the second base surface 12, the first base surface 11 and the second base surface 12 both extend parallel to the first grooving 111, the first base surface 11 is adjacent to the first grooving 111, and the plurality of anti-slip protrusions 122 of the anti-slip component 121 are arranged based on the second base surface 12, and the tops of the anti-slip protrusions 122 are at the same height as the first base surface 11. In this embodiment, Figure 1 As shown, the first nail groove assembly is one group, that is, it includes two rows of first nail groove groups 112 symmetrically arranged on both sides of the first knife groove 111.

[0040] Furthermore, in one example, the bottom width of the anti-slip protrusion 122 can be 0.5mm-1mm, and the bottom width of the gap between two adjacent anti-slip protrusions 122 can be 0.3mm-0.6mm. The bottom width of the anti-slip protrusion 122 and the bottom width of the gap between two anti-slip protrusions 122 are measured in a direction parallel to the horizontal extension direction of the first trough. The bottom width of the anti-slip protrusion 122 refers to the bottom width of the anti-slip protrusion 122. The anti-slip protrusion 122 structure has an appropriate width and bottom width of the gap, which can facilitate the squeezing of body fluids, prevent damage to tissues, and discharge them outward from the clamping surface between the nail anvil and the nail magazine seat, thereby facilitating the smooth cutting operation and nail formation.

[0041] It can be understood that, in this embodiment, by providing the anti-skid protrusions 122 on the anvil surface, the contact area between the anvil seat and the tissue to be cut is increased, the friction between the anvil assembly and the tissue to be cut is increased, which helps to reduce the sliding phenomenon between them, and the anvil surface is provided to include the first base surface 11 and the second base surface 12, and the height of the anti-skid protrusions 122 is designed to be flush with the first base surface 11, which does not affect the stapling effect during the anastomosis process. Further, the first base surface 11 is higher than the second base surface 12, so that there is a height difference between the first base surface 11 and the second base surface 12, which increases the contact area between the anvil seat and the tissue to be cut, further increases the friction between the anvil assembly and the tissue to be cut, and helps to reduce the sliding phenomenon between them.

[0042] In some embodiments, as shown in Figure 2 At least one set of second slot assemblies is further provided on the second base surface 12, and each set of second slot assemblies includes two rows of second slot groups 123 arranged symmetrically, each row of second slot groups 123 is formed based on a plurality of second grooves 124 arranged at intervals along the first knife slot extension direction, and a second partition plate 125 is formed between adjacent two second grooves 124, and the top of the second partition plate 125 is flush with the second base surface 12. Further, by providing the second slot assembly, the number of slot groups is increased, which can provide more fixing point options for the anvil seat and enhance its ability to adapt to different surgical needs.

[0043] In some embodiments, a plurality of sets of first slot assemblies can be arranged in parallel along the horizontal extension direction of the first knife slot on the first base surface 11, and the first slots 112 in adjacent two sets of first slot assemblies are arranged staggered in the vertical extension direction of the first knife slot 111. In an example, as shown in Figure 3 It can be understood that the number of first slot assemblies provided can be determined based on the size of the surface area of the first base surface 11.

[0044] In some embodiments, the anvil seat further includes wing plates 2 symmetrically arranged on both sides of the anvil seat base body 1, and the wing plates 2 have a target thickness. The wing plates 2 include a first wing surface and a second wing surface, and the target thickness is the distance between the first wing surface and the second wing surface.

[0045] In some embodiments, the wing plates 2 are integrally formed with the anvil seat base body 1. Integrally forming the wing plates 2 with the anvil seat base body 1 can eliminate the connection interface between them. This can maximize the reduction of stress concentration at the interface and improve the rigidity and anti-deformation ability of the entire fixing device. Further, the integrally forming process can reduce the assembly steps and improve the production efficiency.

[0046] In some embodiments, the anti-skid protrusions 122 are in the shape of long strips extending vertically from the outer edge to the direction of the first knife groove, and have a target length which is the same as the horizontal maximum thickness of the fender 2, the side of the anti-skid protrusions 122 is tapered, and the taper has an arc-shaped top, so that the gap between adjacent anti-skid protrusions 122 gradually widens from the nail-impingement surface upwards, and the width direction of the target length is the direction extending from the edge of the second base surface 12 to the first base surface 11.

[0047] The anti-skid protrusion structure is in the shape of long strips, and the side is tapered, the gap between the anti-skid protrusions forms a drainage groove, the taper has an arc-shaped top, which can facilitate the extrusion of body fluid to the outside of the nail-impingement seat and the nail magazine seat clamping surface, and facilitate the smooth operation of cutting and nail forming.

[0048] In some embodiments, a first slope 3 is formed between the first base surface 11 and the second base surface 12, and the first slope 3 is arranged close to the end of the first base surface 11 away from the fender 2. In some embodiments, the nail-impingement seat further comprises a bottom surface, and a second slope 4 is formed between the second base surface 12 and the bottom surface, and the second slope 4 is arranged close to the end of the second base surface 12 away from the fender 2. It can be understood that the setting of the slope provides a slow transition space for the nail-impingement seat, which can make the nail-impingement seat slowly enter the tissue along the slope, instead of directly colliding with the vertical tissue surface, which is beneficial to the smooth operation of cutting.

[0049] According to another aspect of the present application, an anastomat is also disclosed, such as Figure 7 As shown, the anastomat comprises the nail-impingement seat and the nail magazine structure 5 of any of the above, wherein the nail magazine structure 5 comprises a plurality of nail magazines 52 on the anastomosis surface 6, a separation groove between the plurality of nail magazines 52, a second knife groove 7 located at the middle position of the nail magazine surface, and a plurality of anti-skid protrusions 51 located at the edge of the anastomosis surface 6; when the nail-impingement seat is engaged with the nail magazine structure 5, the anti-skid protrusions 51 on the anastomosis surface 6 are staggered with the plurality of anti-skid protrusions 122 on the nail-impingement seat in the horizontal direction.

[0050] The second knife groove 7 extends along the length direction and the horizontal direction of the anastomosis surface 6 of the nail magazine structure 5, the separation groove 53 is between the plurality of nail magazines 52, and the separation groove 53 extends from the second knife groove 7 to the anti-skid protrusion platform 7.

[0051] Specifically, the nail-impingement seat and the nail magazine structure 5 are hingedly connected with each other; the anastomosis surface 6 of the nail magazine structure 5 is also provided with a plurality of anti-skid protrusions 51 which are staggered with the anti-skid protrusions 122 on the nail-impingement surface of the nail-impingement seat; which is more conducive to the engagement between the upper surface of the nail magazine structure 5 and the nail-impingement surface of the nail-impingement seat, thereby preventing the tissue from slipping.

[0052] The anastomosis surface 6 of the staple cartridge structure 5 is provided with a plurality of staple cartridges 52, a plurality of isolation grooves 53, and a second knife groove 7 extending along the length direction of the anastomosis surface and located at the middle position of the anastomosis surface. The staple cartridges 52 are used for accommodating anastomosis staples. The plurality of isolation grooves 53 extend downward from any one anastomosis surface 6, and each isolation groove 53 extends horizontally from the second knife groove 7 to the outer side wall. When the staple cartridge structure 5 and the anvil are engaged with each other, part of the tissue contacts the anastomosis surface 6, and part of the tissue is trapped in the isolation groove 53. Therefore, the liquid in the tissue can be more smoothly discharged through the isolation groove 53. The bottom and the side wall of the isolation groove 53 also have a squeezing effect on the tissue, which can guide the tissue liquid to be more easily discharged from the tissue.

[0053] Here, the linking structure of the staple cartridge structure 5 and the anvil is a conventional structure. The opening and closing of the two are realized by the firing mechanism of the anastomat. The structure and principle are all prior art, and thus will not be described in detail.

[0054] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements all fall within the scope of the present application.

Claims

1. A nail seat, characterized in that: The anvil comprises an anvil base (1), and the anvil base (1) has an anvil surface; a first knife groove (111) for a cutting knife to pass through, the first knife groove (111) extending from the anvil surface along the length direction and thickness direction of the anvil seat base, dividing the anvil surface into two parts; and at least two groups of first nail grooves (112), wherein the at least two groups of first nail grooves (112) are respectively arranged on two parts of the nail abutment surface; Each group of the first nail grooves (112) is composed of a plurality of first grooves (113) arranged at intervals along the extension direction of the first knife groove (111), a first partition (114) is formed between two adjacent first grooves (113), and the top of the first partition (114) is flush with the nail support surface; Two groups of anti-slip components are respectively arranged on the outer edges of the two parts of the nail-receiving surface, and each group of the anti-slip components (121) is composed of a plurality of anti-slip protrusions (122) arranged at intervals along the horizontal extension direction of the first knife groove (111); the anti-slip protrusions (122) are in the shape of long strips extending vertically from the outer edge to the direction of the first knife groove (111).

2. The anvil according to claim 1, characterized in that: Each part of the nail-retaining surface includes a first base surface (11) and a second base surface (12), the first base surface (11) and the second base surface (12) both extend parallel to the first knife groove (111), the first base surface (11) is higher than the second base surface (12), the first base surface (11) is adjacent to the first knife groove (111), and the plurality of anti-slip protrusions (122) of the anti-slip component (121) are arranged based on the second base surface (12), and the top of the anti-slip protrusion (122) is at the same height as the first base surface (11).

3. The anvil according to claim 2, characterized in that: At least one group of second nail groove assemblies is also provided on the second base surface (12), and each group of the second nail groove assemblies includes at least one row of second nail grooves (123). Each row of the second nail grooves (123) is composed of a plurality of second grooves (124) arranged at intervals along the extension direction of the first knife groove (111). A second partition (125) is formed between two adjacent second grooves (124), and the top of the second partition (125) is flush with the second base surface (12).

4. The anvil according to claim 2, characterized in that: The first base surface (11) is provided with a plurality of groups of the first nail groove components arranged in parallel along the horizontal extension direction of the first knife groove, and the first nail grooves (112) in two adjacent groups of the first nail groove components are staggered in a direction perpendicular to the extension direction of the first knife groove (111).

5. The anvil according to claim 2, characterized in that: The anvil further comprises fenders (2) symmetrically arranged on both sides of the anvil base (1); the fenders (2) and the anvil base (1) are integrally formed.

6. The anvil according to claim 5, characterized in that: The anti-slip protrusion (122) has a target length, and the target length of the anti-slip protrusion (122) is the same as the horizontal maximum thickness value of the fender (2); the side of the anti-slip protrusion (122) is tapered, and the cone has an arc-shaped top, so that the gap between adjacent anti-slip protrusions (122) gradually widens upward from the nail surface.

7. The anvil according to claim 5, characterized in that: The bottom width of the anti-slip protrusion (122) is 0.5 mm to 1 mm, the bottom width of the gap between two adjacent anti-slip protrusions (122) is 0.3 mm to 0.6 mm, and the measurement direction of the bottom width of the anti-slip protrusion (122) and the bottom width of the gap between two adjacent anti-slip protrusions (122) is parallel to the horizontal extension direction of the first knife groove (111).

8. The anvil according to claim 5, characterized in that: A first slope (3) is formed between the first base surface (11) and the second base surface (12), and the first slope (3) is arranged at an end of the first base surface (11) away from the fender (2); the anvil seat also includes a bottom surface, a second slope (4) is formed between the second base surface (12) and the bottom surface, and the second slope (4) is arranged at an end of the second base surface (12) away from the fender (2).

9. A stapler, characterized in that: The stapler comprises a stapler and a staple magazine structure (5) according to any one of claims 1 to 8, wherein the staple magazine structure (5) comprises a plurality of staple magazines (52) on a mating surface (6), isolation grooves (53) between the plurality of staple magazines (52), a second knife groove (7) located in the middle of the staple magazine surface, and a plurality of anti-slip protrusions (51) located on the edge of the mating surface (6); when the stapler engages with the staple magazine structure (5), the anti-slip protrusions (51) on the mating surface (6) and the plurality of anti-slip protrusions (122) on the stapler are offset in the horizontal direction.

10. The stapler according to claim 9, characterized in that: The second knife groove (7) extends along the length direction and the horizontal direction of the mating surface (6) of the nail magazine structure (5), the isolation groove (53) is located between the plurality of nail magazines (52), and the isolation groove (53) extends from the second knife groove (7) to the anti-slip protrusion (51).

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