Reinforcing gasket for anastomat system

Abstract

The utility model discloses a reinforcing gasket for an anastomat system, which relates to the technical field of medical instruments and comprises a nail abutting seat gasket and a nail bin gasket. Each of the nail abutting seat gasket and the nail bin gasket comprises a far-end positioning surface, an anastomosis surface and a near-end positioning surface which are sequentially arranged from the far end to the near end; the near-end positioning faces and the far-end positioning faces of the nail abutting seat gasket and the nail bin gasket are each provided with a hole or groove used for penetration and positioning of a fastening line, and the near-end positioning faces and the far-end positioning faces of the nail abutting seat gasket and the nail bin gasket are provided with areas used for compressing and fixing of the fastening line. The far-end positioning faces of the nail abutting seat gasket and the nail bin gasket are each provided with a pre-separation longitudinal groove, the pre-separation longitudinal grooves are longitudinally formed in the middles of the far-end positioning faces, and one end of each pre-separation longitudinal groove penetrates through the section of the corresponding far-end positioning face. The disposable anastomat is reasonable in design, the far-end positioning surfaces of the two gaskets are automatically separated into a left unrelated area and a right unrelated area through the pre-separation longitudinal grooves after the anastomat completes anastomosis cutting actions, doctors do not need to intervene in separation specially, and the operation process is simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field more particularly is related to a kind of reinforcing gasket for anastomat system technical field. BACKGROUND

[0002] Anastomat is the instrument widely used in medical field to replace traditional handwork suture, and the working principle of various anastomats is same as that of stapler: that is, through the main component nail magazine, two rows or three rows of interlaced suture nails are implanted into tissue by firing, and multiple-row interlaced suture is carried out on tissue, so that suture is tight and leakage is prevented; at the same time, since small blood vessels can pass through the gap of "B" shaped suture nail, the blood supply of suture site and its distal end is not affected.

[0003] Since the main functions of anastomat, such as clamping, cutting and suturing of tissue, are completed by its nail magazine component, and the anastomotic nail for suturing in nail magazine is usually made of metal material such as titanium, which is hard in texture, and has poor mechanical compatibility when used for soft tissue suture, which can easily cause mechanical damage to fragile soft tissue, and further cause anastomotic leakage, bleeding and fistula. In view of the above problems, various methods are currently used in clinic to reduce the occurrence of complications, and reinforcing gasket is installed on anastomat nail magazine.

[0004] The distal end of the existing gasket is not slotted, and in the case that the distal end of the gasket is not slotted, in some surgical procedures in clinical surgery, after anastomotic cutting is completed, the distal end gasket needs to be disconnected by special intervention of the doctor, which increases the additional surgical procedure of the doctor and is not conducive to simplifying the surgical process. In addition, the wire passing holes on the existing gasket are all circular holes, which causes large resistance when the suture thread is separated from the gasket. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at: in order to solve the above technical problem, the utility model provides a reinforcing gasket for anastomat system.

[0006] The utility model discloses the following technical scheme in order to realize the above-mentioned purpose:

[0007] The utility model provides a reinforcing gasket for anastomat system, including the nail seat gasket and nail bin gasket;The nail seat gasket and nail bin gasket all include the distal end positioning surface, the anastomotic surface and the proximal end positioning surface sequentially arranged from distal end to proximal end;

[0008] The proximal end positioning surface and the distal end positioning surface of the nail seat gasket and the nail bin gasket are both provided with the hole or the groove for fastening line to enter and position, and have the area for fastening line to be tightly fixed;

[0009] The distal positioning surface of both the staple seat pad and the cartridge pad has a pre-separation longitudinal groove, which is longitudinally arranged in the middle of the distal positioning surface and has one end penetrating the cross section of the distal positioning surface.

[0010] Specifically, the staple seat pad and the cartridge pad with the pre-separation longitudinal groove can automatically separate the distal positioning surface of the staple seat pad and the cartridge pad into left and right two unrelated areas after the anastomat completes the anastomosis cutting action, without the need for the user to increase additional actions for separating the distal positioning surface of the staple seat pad and the cartridge pad. The staple seat pad can be fastened by the staple seat fastening line to adhere to the tissue contact anastomosis surface of the staple cartridge; the cartridge pad can be fastened by the cartridge fastening line to adhere to the tissue contact anastomosis surface of the staple cartridge.

[0011] The reason for slotting the distal positioning surface of the staple seat pad and the cartridge pad is briefly described as follows: in the case of no slotting, in some surgical procedures in clinical surgery, after completing the anastomosis cutting, the distal positioning surface needs to be separated by the doctor, which increases the doctor's additional surgical procedures and is not conducive to simplifying the surgical process. Therefore, the pre-separation longitudinal groove of the distal positioning surface is specially added to simplify the surgical process.

[0012] Both the staple seat pad and the cartridge pad are provided with a side wing protection guide surface protruding from the anastomosis surface, which is used to prevent the side edge from rolling up.

[0013] Both the side wing protection guide surface of the staple seat pad and the cartridge pad are provided with holes or grooves for the fastening line to pass through and be positioned. When there are multiple holes or grooves on the side wing protection guide surface, the middle hole or groove is changed into a waist-shaped groove, which can significantly reduce the resistance when the suture line is separated from the pad.

[0014] The side wing protection guide surface is a single protruding structure located on both sides of the anastomosis surface or a plurality of protruding structures located on both sides of the anastomosis surface.

[0015] Specifically, the protruding structure can be symmetrically arranged or asymmetrically arranged.

[0016] In particular, the side wing protection guide surface has a certain angle with the anastomosis surface, which facilitates the adhesion of the side wing protection guide surface to the side surface of the staple cartridge and enhances the lateral compliance and guidance of the clamped tissue.

[0017] The distal positioning surface of the staple seat pad and the cartridge pad is used for the compression and fixation of the staple seat pad by the staple seat fastening line and prevents the pad from rolling up along the movement direction of the cutting knife.

[0018] The distal positioning surface is bent at a certain angle with the corresponding anastomosis surface, and the bending angle is consistent with the angle of the inclined surface of the distal end of the staple cartridge for separating the tissue.

[0019] Specifically, the bending angle is consistent with the angle of the beveled surface at the distal end of the cartridge for separating tissue, facilitating the fit of the distal positioning surface with the beveled surface at the distal end of the cartridge and increasing the longitudinal compliance to the clamped tissue.

[0020] As Figure 24 As shown in embodiments (6-1) and (6-2), the distal positioning surface can be cancelled when the gasket has a wing positioning hole at the distal end side.

[0021] The pre-severing longitudinal groove of both the staple abutment gasket and the cartridge gasket is provided with a hollow redundancy area at the proximal end of the groove for expanding the groove transversely.

[0022] The hollow redundancy area is a deviation hole, a transverse groove or any other irregular shape for accommodating the cutting path of the cutting knife.

[0023] Specifically, in order to accommodate the transverse deviation of the cutting knife movement, a shorter hollow redundancy area is specially arranged at the end of the pre-severing longitudinal groove, thereby improving the severing reliability.

[0024] The materials of the staple abutment gasket and the cartridge gasket are implantable materials.

[0025] Specifically, the materials of the staple abutment gasket and the cartridge gasket can be selected from implantable materials such as non-absorbable materials, artificial synthetic absorbable materials and biological absorbable materials.

[0026] The staple abutment gasket and the cartridge gasket are flexible sheet materials or rigid sheet materials.

[0027] Specifically, the staple abutment gasket and the cartridge gasket can be flexible / rigid sheets or flexible / rigid plates with a certain thickness.

[0028] The materials of the staple abutment gasket and the cartridge gasket are one of non-woven fabrics, knitted fabrics, needled fabrics, woven fabrics, films and pressed sheets.

[0029] Specifically, the materials of the staple abutment gasket and the cartridge gasket can be non-woven fabrics, knitted fabrics, needled fabrics, woven fabrics, films, pressed sheets and the like, and can also be a multi-layer composite of the above-mentioned sheets.

[0030] The overall thickness of the staple abutment gasket and the cartridge gasket can be uneven, and the staple abutment gasket and the cartridge gasket are provided with regular or irregular holes.

[0031] Specifically, the overall thickness of the staple abutment gasket and the cartridge gasket can be uniform or uneven, and the gasket can have regular or irregular holes.

[0032] The beneficial effects of the utility model are as follows:

[0033] 1. The utility model discloses a reasonable design, the distal positioning surface of the nail seat gasket and the nail cartridge gasket is not under the condition of not being grooved, in the part of clinical operation, when completing the anastomosis cutting, because the distal positioning surface is not disconnected, need the special intervention of doctor to disconnect, increase the additional operation procedure of doctor, do not favor the simplification operation process.

[0034] 2. When there are multiple holes or grooves on the wing protection guide surface, changing the middle hole or groove into a waist-shaped groove can significantly reduce the resistance when the suture thread is separated from the gasket.

[0035] 3. In order to contain the transverse deviation of the cutting knife movement, a shorter hollow redundant area is arranged at the end of the pre-disconnection longitudinal groove, which improves the disconnection reliability. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will be a brief introduction to the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other related drawings according to these drawings.

[0037] Figure 1 It is the schematic diagram of the three-dimensional structure of example 1;

[0038] Figure 2 It is the explosion view of the three-dimensional structure of example 1;

[0039] Figure 3 It is the schematic diagram of the assembly process of the nail seat component of example 1;

[0040] Figure 4 It is the front view of the nail seat component of example 1;

[0041] Figure 5 It is the enlarged view of the nail seat and the nail seat fastening line collection structure of example 1;

[0042] Figure 6 It is the schematic diagram of the assembly process of the nail cartridge component of example 1;

[0043] Figure 7 It is the front view of the nail cartridge component of example 1;

[0044] Figure 8 It is the enlarged view of the nail cartridge and the nail cartridge fastening line collection structure of example 1;

[0045] Figure 9 It is the schematic diagram of the structure feature of the nail seat component of example 1;

[0046] Figure 10is a schematic view of a staple seat fastener wire structure feature of Example 1;

[0047] Figure 11 is a schematic view of a staple seat pad structure feature of Example 1;

[0048] Figure 12 is a schematic view of a staple seat pad deployment structure feature of Example 1;

[0049] Figure 13 is a schematic view of a staple cartridge pad structure feature of Example 1;

[0050] Figure 14 is a schematic view of a staple cartridge pad deployment structure feature of Example 1;

[0051] Figure 15 is a schematic view of a staple cartridge fastener wire structure feature of Example 1;

[0052] Figure 16 is a schematic view of a staple cartridge structure feature of Example 1;

[0053] Figure 17 is a schematic view of a staple cartridge base feature of Example 1;

[0054] Figure 18 is a schematic view of a staple seat component assembly process of Example 2;

[0055] Figure 19 is a schematic view of a staple cartridge component assembly process of Example 2;

[0056] Figure 20 is a schematic view of a staple seat pad structure feature of Example 2;

[0057] Figure 21 is a schematic view of a staple seat pad deployment structure feature of Example 2;

[0058] Figure 22 is a schematic view of a staple cartridge pad structure feature of Example 2;

[0059] Figure 23 is a schematic view of a staple cartridge pad deployment structure feature of Example 2;

[0060] Figure 24 is a schematic view of a variety of pad structure embodiments;

[0061] REFERENCE NUMERALS:

[0062] DETAILED DESCRIPTION

[0063] 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.

[0064] 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.

[0065] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0066] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0067] Example 1

[0068] like Figure 1 As shown, this embodiment provides a stapler cartridge system with a pad composite mechanism, including an anvil component 2, a staple cartridge component 3, and a drive component 4. The anvil component 2 and the staple cartridge component 3 constitute a stapler cartridge 1. The proximal ends of the anvil component 2 and the staple cartridge component 3 are connected by a hinge, and the distal ends of the anvil component 2 and the staple cartridge component 3 form a jaw for clamping tissue. The drive component 4 is used to close the jaw. The drive component 4 includes a cutting blade 13 and a drive rod component 14. The cutting blade 13 can slide relative to the internal space formed after the staple cartridge component 3 and the anvil component 2 are closed.

[0069] like Figure 2 As shown, the drive component 4 includes a cutting blade 13 and a drive rod component 14. The cutting blade 13 can slide relative to each other in the internal space formed after the staple cartridge component 3 and the abutment component 2 are closed.

[0070] The anvil seat component 2 comprises an anvil seat 5, an anvil seat fastening wire 6 and an anvil seat gasket 7, the anvil seat gasket 7 is fixed on the anvil seat 5 through the anvil seat fastening wire 6, both ends of the anvil seat fastening wire 6 are sequentially inserted into the corresponding holes or grooves of the anvil seat 5 and the anvil seat gasket 7, so that the anvil seat fastening wire 6 forms a wire loop, and then the both ends of the anvil seat fastening wire 6 are bundled to tension the wire loop; the both ends of the anvil seat fastening wire 6 are fixedly checked to keep the wire loop formed by the anvil seat fastening wire 6 at a constant tension;

[0071] The cartridge component 3 comprises a cartridge base 12, a cartridge 10 detachably arranged on the cartridge base 12, a cartridge gasket 8 arranged on the upper surface of the cartridge 10, and a cartridge fastening wire 9, both ends of the cartridge fastening wire 9 are sequentially inserted into the corresponding holes or grooves of the cartridge base 12, the cartridge 10 and the cartridge gasket 8, so that the cartridge fastening wire 9 forms a wire loop, and then the both ends of the cartridge fastening wire 9 are bundled to tension the wire loop, the both ends of the cartridge fastening wire 9 are fixedly checked to keep the wire loop formed by the cartridge fastening wire 9 at a constant tension;

[0072] A certain point or a certain section on the wire loop formed by the anvil seat fastening wire 6 and the wire loop formed by the cartridge fastening wire 9 is fixedly connected with the stapler cartridge;

[0073] A certain point or a certain section on the wire loop formed by the anvil seat fastening wire 6 after being tensioned and the wire loop formed by the cartridge fastening wire 9 after being tensioned is located in the cutting range of the cutting edge of the cutting knife 13 and can be disconnected from the point or the section during the movement of the cutting edge of the cutting knife 13.

[0074] Figures 3-17 The assembly mode and detailed structure of the first embodiment of the patent.

[0075] As shown in Figure 3 , the assembly process of the anvil seat gasket 7 is as follows:

[0076] First step: Insert the both ends of the anvil seat fastening wire 6 (anvil seat fastening wire right end head 61a, anvil seat fastening wire left end head 61b) into the anvil seat gasket proximal end hole (anvil seat gasket proximal end right side hole 71a, anvil seat gasket proximal end left side hole 71b), anvil seat proximal end hole (anvil seat proximal end right side hole 51a, anvil seat proximal end left side hole 51b) and anvil seat wire containing groove (anvil seat right side wire containing groove 52a, anvil seat left side wire containing groove 52b) in sequence, respectively.

[0077] Second step: pass the two ends of the butt staple holder fastening wire 6 (butt staple holder fastening wire right end head 61a, butt staple holder fastening wire left end head 61b) through the butt staple holder gasket two side wing threading holes (butt staple holder gasket proximal right side hole 71a, butt staple holder gasket proximal left side hole 71b, butt staple holder gasket right side wing distal hole 73a, butt staple holder gasket left side wing distal hole 73b) and the butt staple holder distal hole (butt staple holder distal right side hole 53a, butt staple holder distal left side hole 53b) in sequence, respectively. Then, merge the two ends of the butt staple holder fastening wire 6 (butt staple holder fastening wire right end head 61a, butt staple holder fastening wire left end head 61b) and pass them through the butt staple holder gasket distal hole 74 and the butt staple holder distal stepped hole 54 in sequence.

[0078] Third step: pull the two ends of the butt staple holder fastening wire 6 (butt staple holder fastening wire right end head 61a, butt staple holder fastening wire left end head 61b) with appropriate tension. Under the tension of the butt staple holder fastening wire 6, the butt staple holder gasket 7 is tightly attached to the butt staple holder 5, and a butt staple holder fastening wire proximal beam 62 is formed at the proximal position of the butt staple holder 5. The butt staple holder fastening wire 6 is bundled and fixed at the two ends (butt staple holder fastening wire right end head 61a, butt staple holder fastening wire left end head 61b) by knotting, hot melt glue plugging, etc. in the large hole at the top of the butt staple holder distal stepped hole 54, forming a butt staple holder fastening wire bundle head 66, so that the butt staple holder fastening wire 6 forms a closed wire loop with appropriate tension. The butt staple holder fastening wire bundle head 66 is tightly attached to the butt staple holder 5 by the tension of the butt staple holder fastening wire 6 and the interference fit of the butt staple holder fastening wire bundle head 66 and the small hole in the butt staple holder distal stepped hole 54, without obvious looseness or displacement.

[0079] As shown in Figure 4 and Figure 5 , the butt staple holder distal stepped hole 54 is a special-shaped hole with a large hole at one end and a small hole at the other end. The maximum outer diameter of the butt staple holder fastening wire bundle head 66 should be in clearance fit with the large hole of the butt staple holder distal stepped hole 54 and in interference fit with the small hole, so that the butt staple holder fastening wire bundle head 66 can be accommodated in the large hole of the butt staple holder distal stepped hole 54, and when the butt staple holder fastening wire bundle head 66 is subjected to pulling force, it should not be squeezed into or through the small hole area of the butt staple holder distal stepped hole 54.

[0080] As shown in Figure 6 , the assembly process of the staple cartridge gasket 8 is as follows:

[0081] First step: the two ends of the cartridge fastening line 9 (cartridge fastening line right end head 91a, cartridge fastening line left end head 91b) are respectively and sequentially threaded into the proximal holes of the cartridge spacer 8 (cartridge spacer proximal right side hole 81a, cartridge spacer proximal left side hole 81b), the two side wing holes of the cartridge spacer (cartridge spacer right side wing proximal hole 82a, cartridge spacer left side wing proximal hole 82b, cartridge spacer right side wing distal hole 83a, cartridge spacer left side wing distal hole 83b), the distal hole of the cartridge spacer 84, and the cartridge fastening line side beams (cartridge fastening line proximal right side beam 93a, cartridge fastening line proximal left side beam 93b, cartridge fastening line distal right side beam 94a, cartridge fastening line distal left side beam 94b) are formed.

[0082] Second step: first, the proximal side beams of the cartridge fastening line (cartridge fastening line proximal right side beam 93a, cartridge fastening line proximal left side beam 93b) are respectively hung into the proximal hanging line grooves of the cartridge base 12 (cartridge base proximal right side hanging line groove 121a, cartridge base proximal left side hanging line groove 121b), and then the two ends of the cartridge fastening line (cartridge fastening line right end head 91a, cartridge fastening line left end head 91b) are simultaneously threaded into the cartridge distal end stepped hole (103).

[0083] Third step: with appropriate tension, the two ends of the cartridge fastening line (cartridge fastening line right end head 91a, cartridge fastening line left end head 91b) are simultaneously tightened. Under the tension of the cartridge fastening line 9, the cartridge spacer 8 is tightly attached to the cartridge 10, and a cartridge fastening line proximal transverse beam (92) that is tightly attached to the cartridge spacer 8 is formed at the proximal end position of the cartridge 10. In the large hole at the bottom of the cartridge distal end stepped hole 103, a cartridge fastening line collection head 95 is formed by knotting, hot melt glue plugging, or other methods, the two ends of the cartridge fastening line (cartridge fastening line right end head 91a, cartridge fastening line left end head 91b) are collected and fixed, and the cartridge fastening line 9 forms a closed line ring with appropriate tension. The cartridge fastening line collection head 95 is tightly attached to the cartridge 10 by the tension of the cartridge fastening line 9 and the interference fit between the cartridge fastening line collection head 95 and the small hole in the cartridge distal end stepped hole 103, and there is no obvious looseness or displacement.

[0084] As shown in Figure 8 , the cartridge distal end stepped hole 103 is a special-shaped hole, one end of which is a large hole with a larger diameter, and the other end of which is a small hole with a smaller diameter. The maximum outer diameter of the cartridge fastening line collection head 95 should be in clearance fit with the large hole of the cartridge distal end stepped hole 103 and in interference fit with the small hole, so that the cartridge fastening line collection head 95 can be accommodated in the large hole of the cartridge distal end stepped hole 103, and when the cartridge fastening line collection head 95 is subjected to a pulling force, it should not be squeezed into or pass through the small hole area of the cartridge distal end stepped hole 103.

[0085] Example 2

[0086] Figures 18-23The assembly method and detailed structure of the present patent embodiment 2.

[0087] As shown in Figure 18 The first step of the assembly of the nail seat pad 7 is consistent with embodiment 1.

[0088] Second step: the two ends of the nail seat fastening line 6 (the right end head 61a of the nail seat fastening line, the left end head 61b of the nail seat fastening line) are respectively sequentially inserted into the two side wing through holes of the nail seat pad (the right side hole 71a near the proximal end of the nail seat pad, the left side hole 71b near the proximal end of the nail seat pad, the right side hole 73a far from the distal end of the nail seat pad, the left side hole 73b far from the distal end of the nail seat pad), the distal end hole of the nail seat (the right side hole 53a far from the distal end of the nail seat, the left side hole 53b far from the distal end of the nail seat). Then, the distal end side beams of the nail seat fastening line (the right distal end side beam 64a of the nail seat fastening line, the left distal end side beam 64b of the nail seat fastening line) are respectively hung into the distal end clamping groove of the nail seat pad (the right distal end side beam 64a of the nail seat fastening line, the left distal end side beam 64b of the nail seat fastening line). After that, the two ends of the nail seat fastening line (6) (the right end head 61a of the nail seat fastening line, the left end head 61b of the nail seat fastening line) are combined and passed through the distal end stepped hole 54 of the nail seat together.

[0089] The third step assembly method is consistent with embodiment 1. After the nail seat fastening line is tensioned, the distal end inclined pressing beams of the nail seat fastening line (the right distal end inclined pressing beam 65a of the nail seat fastening line and the left distal end inclined pressing beam 65b of the nail seat fastening line) are pulled out from the roots of the distal end clamping grooves of the nail seat pad (the right distal end side beam 64a of the nail seat fastening line, the left distal end side beam 64b of the nail seat fastening line), and are inclinedly pressed against the distal end tongue 76 of the nail seat pad, so as to form a comprehensive limiting and fixing in the horizontal and vertical directions at the distal end of the nail seat pad.

[0090] As shown in Figure 19 The assembly process of the nail cartridge pad 8 is as follows:

[0091] First step: the two ends of the nail cartridge fastening line 9 (the right end head 91a of the nail cartridge fastening line, the left end head 91b of the nail cartridge fastening line) are respectively sequentially inserted into the proximal end holes of the nail cartridge pad 8 (the right side hole 81a near the proximal end of the nail cartridge pad, the left side hole 81b near the proximal end of the nail cartridge pad), the two side wing holes of the nail cartridge pad (the right side wing proximal end hole 82a of the nail cartridge pad, the left side wing proximal end hole 82b of the nail cartridge pad, the right side wing distal end hole 83a of the nail cartridge pad, the left side wing distal end hole 83b of the nail cartridge pad), the distal end clamping groove of the nail cartridge pad (the right distal end clamping groove 87a of the nail seat pad of embodiment 2, the left distal end clamping groove 87b of the nail seat pad of embodiment 2), and form the side beams of the nail cartridge fastening line (the right proximal end side beam 93a of the nail cartridge fastening line, the left proximal end side beam 93b of the nail cartridge fastening line, the right distal end side beam 94a of the nail cartridge fastening line, the left distal end side beam 94b of the nail cartridge fastening line).

[0092] Second step: first, the staple cartridge fastening line proximal side beam (staple cartridge fastening line proximal right side beam 93a, staple cartridge fastening line proximal left side beam 93b) is hung into the staple cartridge base 12 proximal hanging line groove (staple cartridge base proximal right side hanging line groove 121a, staple cartridge base proximal left side hanging line groove 121b) respectively, then, the staple cartridge fastening line both ends (staple cartridge fastening line right end 91a, staple cartridge fastening line left end 91b) are simultaneously inserted into the staple cartridge distal end step hole 103.

[0093] The third step assembly mode is consistent with example 1, after the staple cartridge fastening line is tensioned, the staple cartridge fastening line distal end inclined pressing beam (staple cartridge fastening line distal right side beam 94a and staple cartridge fastening line distal left side beam 94b) is pressed out from the root of the staple cartridge gasket distal end clamping groove (example 2-staple cartridge gasket distal right side clamping groove 87a, example 2-staple cartridge gasket distal left side clamping groove 87b), and is obliquely pressed against the staple cartridge gasket distal end tongue 86, so that the staple cartridge gasket distal end is formed in a transverse and longitudinal overall limiting and fastening manner.

[0094] As shown in Figure 24 Various gasket structure embodiments suitable for the anastomat cartridge system of the present embodiment can be independently used or used in combination.

[0095] Example 3

[0096] The present embodiment provides an enhanced gasket for an anastomat system, which comprises a butt seat gasket 7 and a cartridge gasket 8; the butt seat gasket 7 and the cartridge gasket 8 each comprise a distal end positioning surface, an anastomosis surface and a proximal end positioning surface arranged in sequence from the distal end to the proximal end;

[0097] The proximal end positioning surface and the distal end positioning surface of the butt seat gasket 7 and the cartridge gasket 8 each are provided with holes or grooves for the fastening line to pass through and be positioned, and have an area for the fastening line to be tightly pressed and fixed;

[0098] The distal end positioning surface of the butt seat gasket 7 and the cartridge gasket 8 each has a pre-separation longitudinal groove (butt seat gasket distal end pre-separation longitudinal groove 201, cartridge gasket distal end pre-separation longitudinal groove 211), which is longitudinally arranged in the middle of the distal end positioning surface and penetrates the cross section of the distal end positioning surface at one end.

[0099] Specifically, the butt seat gasket 7 and the cartridge gasket 8 with the pre-separation longitudinal groove can automatically separate the distal end positioning surface of the butt seat gasket 7 and the cartridge gasket 8 into left and right two unrelated areas after the anastomat completes the anastomosis and cutting action, without the need for the user to add additional action for separating the distal end positioning surface of the butt seat gasket 7 and the cartridge gasket 8. The butt seat gasket 7 can be fastened by the butt seat fastening line 6 and attached to the butt seat tissue contact anastomosis surface of the cartridge; the cartridge gasket 8 can be fastened by the cartridge fastening line 9 and attached to the cartridge tissue contact anastomosis surface of the cartridge.

[0100] The reason for slotting the distal positioning surface of the anvil pad 7 and the cartridge pad 8 is briefly described as follows: In some surgical procedures, the distal positioning surface of the anvil pad 7 and the cartridge pad 8 is not disconnected after the anastomosis is cut, and the doctor needs to intervene to disconnect it, which increases the doctor's additional surgical procedures and is not conducive to simplifying the surgical process. Therefore, a pre-disconnection longitudinal slot is specially added to the distal positioning surface to simplify the surgical process.

[0101] The anastomosis surface of the anvil pad 7 and the cartridge pad 8 is provided with a side wing protection guide surface protruding from the anastomosis surface on both sides, which is used to prevent the side edge from rolling up.

[0102] The side wing protection guide surface of the anvil pad 7 and the cartridge pad 8 is provided with a hole or a slot for fastening and positioning the thread. When there are multiple holes or slots on the side wing protection guide surface, the middle hole or slot is changed to a waist-shaped slot, which can significantly reduce the resistance when the suture thread is separated from the pad.

[0103] The side wing protection guide surface is a single protruding structure located on both sides of the anastomosis surface or a plurality of protruding structures located on both sides of the anastomosis surface. Specifically, the protruding structures can be symmetrically arranged or asymmetrically arranged. In particular, the side wing protection guide surface has a certain angle with the anastomosis surface, which facilitates the fitting of the side wing protection guide surface with the side surface of the nail box, and enhances the lateral compliance and guidance of the clamped tissue.

[0104] The distal positioning surface of the anvil pad 7 and the cartridge pad 8 is used to tightly fix the anvil pad 7 by the anvil fastening thread 6 and prevent the pad from rolling up along the movement direction of the cutting knife.

[0105] The distal positioning surface is bent at a certain angle with the corresponding anastomosis surface, and the bending angle is consistent with the angle of the inclined surface at the distal end of the nail box for separating the tissue. Specifically, the bending angle is consistent with the angle of the inclined surface at the distal end of the nail box for separating the tissue, which facilitates the fitting of the distal positioning surface with the inclined surface at the distal end of the nail box, and increases the longitudinal compliance of the clamped tissue. Figure 24 As shown in the (6-1) and (6-2) embodiments, the distal positioning surface can be cancelled under the condition that the pad has a side wing positioning hole at the distal end.

[0106] The pre-disconnection longitudinal slot of the anvil pad 7 and the cartridge pad 8 is provided with a hollow redundancy area at the proximal end of the slot, which expands the slot transversely (anvil pad distal end hollow redundancy area 202, cartridge pad distal end hollow redundancy area 212).

[0107] The hollow redundancy area is a deviation hole, a horizontal slot or any other irregular shape for containing the cutting path of the cutting knife. In order to contain the lateral deviation of the cutting knife movement, a relatively short hollow redundancy area is specially arranged at the end of the pre-disconnection longitudinal slot to improve the disconnection reliability.

[0108] The materials of the staple seat pad 7 and the cartridge pad 8 are implantable materials for human body. Specifically, the materials of the staple seat pad 7 and the cartridge pad 8 can be selected from implantable materials for human body such as non-absorbable materials, artificial synthetic absorbable materials, and biological absorbable materials (in detail, the materials of the staple seat pad 7 and the cartridge pad 8 are one of non-woven fabric, knitted fabric, needle punched fabric, woven fabric, film, and pressed sheet. They can also be multi-layered composites of the above-mentioned sheets).

[0109] The staple seat pad 7 and the cartridge pad 8 are flexible sheet materials or rigid sheet materials. Specifically, the staple seat pad 7 and the cartridge pad 8 can be flexible / rigid sheets or flexible / rigid plates with a certain thickness.

[0110] The overall thickness of the staple seat pad 7 and the cartridge pad 8 can be uneven, and the staple seat pad 7 and the cartridge pad 8 are provided with regular or irregular holes.

Claims

1. A reinforcing patch for a stapler system, characterized by, The device comprises a staple seat pad (7) and a cartridge pad (8); the staple seat pad (7) and the cartridge pad (8) each comprise a distal positioning surface, an anastomosis surface and a proximal positioning surface arranged in sequence from the distal end to the proximal end; The proximal positioning surface and the distal positioning surface of the staple seat pad (7) and the cartridge pad (8) are each provided with holes or grooves for the passage and positioning of fastening lines, and have an area for the tight fixing of the fastening lines; The distal positioning surface of the staple seat pad (7) and the cartridge pad (8) each has a pre-separation longitudinal groove, which is longitudinally arranged in the middle of the distal positioning surface and has one end penetrating the cross section of the distal positioning surface; the two pre-separation longitudinal grooves are a staple seat pad distal pre-separation longitudinal groove (201) and a cartridge pad distal pre-separation longitudinal groove (211).

2. The reinforced buttress for a stapler system of Claim 1 wherein, The anastomosis surface of the staple seat pad (7) and the cartridge pad (8) is provided with a side wing protection guide surface protruding from the anastomosis surface on both sides, which is used to prevent the side edge from rolling up; The side wing protection guide surface of the staple seat pad (7) and the cartridge pad (8) is provided with holes or grooves for the passage and positioning of fastening lines.

3. The reinforcing pad for the stapler system according to claim 2, wherein The side wing protection guide surface is a single protruding structure on both sides of the anastomosis surface or a plurality of protruding structures on both sides of the anastomosis surface.

4. The reinforced buttress for a stapler system of Claim 1 wherein, The distal positioning surface of the staple seat pad (7) and the cartridge pad (8) is used for the tight fixing of the staple seat fastening line (6) to the staple seat pad (7) and prevents the pad from rolling up along the movement direction of the cutting knife; The distal positioning surface is bent at a certain angle with respect to the anastomosis surface, and the bending angle is consistent with the angle of the inclined surface at the distal end of the cartridge for separating the tissue.

5. The reinforced buttress for a stapler system of Claim 1 wherein, The proximal end of the pre-separation longitudinal groove of the staple seat pad (7) and the cartridge pad (8) is provided with a hollow redundant area that expands the groove transversely.

6. An enhanced buttress for use with a stapler system as defined in claim 5, wherein, The hollow redundant area is a deviation circular hole, a transverse groove or any other irregular shape for containing the cutting path of the cutting knife.

7. A reinforced buttress for a stapler system according to any one of claims 1 to 6, wherein, The material of the staple seat pad (7) and the cartridge pad (8) is a material that can be implanted in the human body.

8. A reinforced buttress for a stapler system according to any one of claims 1 to 6, wherein, The staple seat pad (7) and the cartridge pad (8) are flexible or rigid sheet materials.

9. A reinforced buttress for a stapler system according to any one of claims 1 to 6, wherein, The material of the staple seat pad (7) and the cartridge pad (8) is one of non-woven fabric, knitted fabric, needle-punched material, woven fabric, film and pressed sheet.

10. A reinforced buttress for a stapler system according to any one of claims 1 to 6, wherein, The overall thickness of the staple seat pad (7) and the cartridge pad (8) can be uneven, and the staple seat pad (7) and the cartridge pad (8) are provided with regular or irregular holes.

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