Staple cartridge, staple cartridge assembly and anastomat

Abstract

The utility model discloses a nail bin, a nail bin assembly and an anastomat, and relates to the technical field of medical instruments. The feeding groove of the nail bin extends in the first set direction, the multiple nail groove sets are distributed on the two sides of the feeding groove in the groove width direction of the feeding groove, and the numbers of the nail groove sets on the two sides of the feeding groove are different, so that the anastomosis firmness and the anastomosis width of the two sides of the feeding groove in the groove width direction are different; the anastomosis firmness of the side with the large number of nail groove sets can be improved in a targeted mode, and the differentiated anastomosis requirements of the tissue retaining end and the tissue excision end can be met. The anastomosis effect on the tissue retaining end can be improved, the bleeding amount of the tissue retaining end is reduced, and meanwhile the problems that the anastomosis function of the tissue resection end is excessive and anastomosis nails are wasted can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a staple cartridge, a staple cartridge assembly and a stapler. Background Art

[0002] The stapler is a medical device commonly used for tissue anastomosis in surgical operations. The stapler includes components such as a staple magazine assembly and a staple anvil. During the operation, the cutting knife drives the staple pusher to move, and the staple pusher fires the staples in the staple magazine of the staple magazine assembly through the staple pushing movement of the staple pusher. The fired staples pierce the tissue and deform by reacting with the staple anvil, thereby completing the anastomosis operation. At the same time, the cutting knife completes the cutting operation. Usually, the two sides of the cutting knife's travel path correspond to the tissue retention end and the tissue removal end, respectively, and both the tissue retention end and the tissue removal end perform the anastomosis operation through staples.

[0003] However, when using the stapler in the related art to perform anastomosis, problems such as poor anastomosis effect and large bleeding volume may easily occur at the tissue retention end, while excessive anastomosis function may occur at the tissue resection end. Utility Model Content

[0004] In view of this, the purpose of the present application includes providing a stapler, a stapler assembly and a stapler, aiming to improve the situation in the related art where the stapler causes poor anastomosis effect and large bleeding at the tissue retention end, while excessive anastomosis function at the tissue resection end.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a nail magazine, on which a tool groove and a plurality of nail groove groups are formed, the tool groove extending along a first set direction, the tool groove being configured for a cutting knife to pass through, each of the nail groove groups comprising a plurality of nail grooves distributed along the first set direction, the nail groove being configured for installing staples, a plurality of the nail groove groups being arranged at intervals along a groove width direction of the tool groove, at least one nail groove group being distributed on both sides of the tool groove in the groove width direction, and the number of the nail groove groups on both sides of the tool groove in the groove width direction is different.

[0007] In an optional embodiment, the tool groove is extended along a straight line, and a first opening is provided at one end of the tool groove, and the first opening is configured to allow the cutting knife to enter the tool groove along the first set direction.

[0008] In an optional embodiment, the plurality of nail groove groups on the same side of the tool groove are equidistantly distributed.

[0009] In an optional embodiment, the nail grooves of two adjacent nail groove groups on the same side of the tool groove are staggered.

[0010] In an optional embodiment, the number of the nail groove groups on either side of the tool groove along the groove width direction is greater than or equal to two.

[0011] In an optional embodiment, the difference in the number of the nail groove groups on both sides of the tool groove along the groove width direction is less than or equal to two.

[0012] In an optional embodiment, the tool groove and the nail groove penetrate the nail magazine along a second set direction, and the second set direction is perpendicular to the first set direction and the groove width direction; the nail magazine has a first side and a second side relative to each other in the second set direction, and the opening formed by the nail groove on the first side of the nail magazine is configured to allow the front end of the fired staple to extend out, and the second side of the nail magazine is provided with a plurality of nail pushing grooves extending along the first set direction, and the nail pushing groove is arranged between two adjacent nail groove groups on the same side of the tool groove, and the nail pushing groove is connected with the nail grooves of the two adjacent nail groove groups in the groove width direction, and the nail pushing groove is configured to allow at least a portion of the nail pushing member to pass through so as to push the staple located in the nail groove to move toward the first side of the nail magazine.

[0013] In an optional embodiment, a second opening is provided at one end of the nail pushing groove, and the second opening is configured to allow the nail pushing member to pass through along the first set direction.

[0014] In an optional embodiment, the second side of the nail magazine is provided with a guide groove extending along the first set direction, and the guide groove is configured to slideably cooperate with the guide portion of the nail pushing member.

[0015] In a second aspect, an embodiment of the present application provides a nail magazine assembly, comprising a nail pushing member and a nail magazine as described in any one of the first aspects above, wherein the nail pushing member is configured to move relative to the nail magazine to fire the staples in the nail grooves of the nail magazine.

[0016] In an optional embodiment, the knife groove of the staple cartridge and the nail groove penetrate the staple cartridge along a second set direction, the second set direction being perpendicular to the first set direction and the slot width direction of the knife groove; the staple cartridge has a first side and a second side opposite to each other in the second set direction, the opening formed by the nail groove on the first side of the staple cartridge is configured to allow the front end of the fired staple to extend out, the second side of the staple cartridge is provided with a plurality of nail pushing grooves extending along the first set direction, the nail pushing grooves being provided between two adjacent nail groove groups on the same side of the knife groove, and the nail pushing grooves are connected with the nail grooves of the two adjacent nail groove groups in the slot width direction;

[0017] The nail pushing member is arranged on the second side of the nail magazine, and at least partially extends into the nail pushing groove and can move along the nail pushing groove to push the anastomosis nail located in the nail groove to move toward the first side of the nail magazine.

[0018] In an optional embodiment, the nail pushing member includes a plurality of nail pushing plates, which are arranged at intervals along the groove width direction, and the number of the nail pushing plates is equal to the number of the nail pushing grooves and are inserted into the nail pushing grooves in a one-to-one correspondence.

[0019] In an optional embodiment, a guide surface is provided at one end of the nail pushing plate in the first set direction, and the guide surface is inclined to the first set direction and inclined toward the second side of the nail magazine; the guide surface is configured to push the staples toward the first side of the nail magazine when moving along the first set direction.

[0020] In an optional embodiment, the second side of the nail magazine is provided with a guide groove extending along the first set direction, and the nail pushing member further includes a guide portion, and the guide groove is slidably matched with the guide portion of the nail pushing member.

[0021] In an optional embodiment, the nail magazine assembly also includes a nail holder and a staple, the nail holder being accommodated in the nail groove and the nail pushing groove, the nail holder including two connected sub-nail holders, the two sub-nail holders respectively slidingly cooperate with the nail grooves in two adjacent nail groove groups, so that the nail holder can move in the second set direction relative to the nail magazine, and a staple is provided on one end of each sub-nail holder close to the first side of the nail magazine.

[0022] In an optional embodiment, the nail pushing member is configured to be movable in the first set direction relative to the nail magazine; the nail magazine assembly also includes an elastic limiting unit, the nail magazine is provided with a mounting hole, and the elastic limiting unit is installed at the mounting hole; the elastic limiting unit includes an elastic force transmission structure and a trigger part and a limiting part located at both ends of the elastic force transmission structure, the trigger part and the limiting part are respectively arranged close to the inner end and the outer end of the mounting hole, the trigger part is arranged in the nail pushing movement path of the nail pushing member along the first set direction, and the elastic limiting unit is configured to generate elastic deformation when the trigger part is pushed by the nail pushing member, so as to make the trigger part withdraw from the nail pushing movement path; the elastic force transmission structure is configured to apply an elastic driving force extending toward the outer end of the mounting hole to the limiting part when the trigger part withdraws from the nail pushing movement path.

[0023] In an optional embodiment, the nail magazine is provided with the trigger portion corresponding to the end limit position of the nail pushing movement path of the nail pushing member;

[0024] And / or, the elastic limiting unit is a spring structure, the fixed end of the spring structure is fixedly arranged at the edge of the mounting hole, and the elastic force transmission structure, the trigger part and the limiting part are all formed on the spring structure.

[0025] In an optional embodiment, the spring sheet structure is bent to form a first section, a second section and a third section which are connected in sequence, the first section forming a fixed end of the spring sheet structure and being fixedly connected to the nail magazine, the second section and the third section are respectively inclined relative to the first section, the third section is arranged at an angle to the second section, and the opening direction of the angle formed by the second section and the third section is consistent with the hole depth direction of the mounting hole, the connecting part between the second section and the third section forms the trigger section, and the third section forms the elastic force transmission structure.

[0026] In an optional embodiment, the nail magazine assembly also includes a nail magazine cover, which is detachably connected to the nail magazine, the nail magazine cover forming a accommodating space, the nail magazine is arranged in the accommodating space of the nail magazine cover, the nail magazine cover is provided with a through hole, the through hole is connected to the mounting hole, and the through hole is configured to allow the limiting portion to pass through; the inner wall of the nail magazine cover and the outer wall of the nail magazine clamp the fixed end of the spring structure.

[0027] In a third aspect, an embodiment of the present application provides a stapler, comprising the staple cartridge assembly described in any one of the second aspects above.

[0028] The beneficial effects of this application are:

[0029] Compared with the related prior art, in the stapler, stapler assembly and stapler of the present application, the knife groove of the stapler extends along the first set direction, and the knife groove is configured for the cutting knife to pass through. When the stapler is applied to the stapler, specifically, when the stapler presses the tissue to be operated by the staple holder and the stapler, the cutting knife can pass through the knife groove to perform the cutting operation. At the same time, multiple nail groove groups are distributed on both sides of the knife groove along the groove width direction of the knife groove, and the number of nail groove groups on both sides of the knife groove is different, so that the anastomosis firmness and anastomosis width on both sides of the knife groove along the groove width direction are different, which can specifically improve the anastomosis firmness on the side with more nail groove groups, and can meet the differentiated anastomosis requirements of the tissue retention end and the tissue resection end. Specifically, the side with a larger number of staple groove groups corresponds to the tissue retention end, and the side with a smaller number of staple groove groups corresponds to the tissue removal end, which can meet the anastomosis requirements of the tissue retention end, improve the anastomosis effect of the tissue retention end, and reduce the amount of bleeding at the tissue retention end; at the same time, it can also avoid excessive anastomosis function caused by too many staples at the tissue removal end, resulting in waste of staples. In general, the staple cartridge of the embodiment of the present application is conducive to improving the utilization rate of staples, reducing the amount of bleeding at the tissue retention end, and improving the anastomosis effect of the tissue retention end. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 This is a schematic diagram of a stapler in one embodiment of the present application;

[0032] Figure 2 This is a schematic diagram of the assembly of a nail magazine seat, a nail magazine assembly, and a nail support in one embodiment of the present application;

[0033] Figure 3 This is an exploded schematic diagram of a nail magazine seat, a nail magazine assembly, and a nail support in one embodiment of the present application;

[0034] Figure 4 This is a partial schematic diagram of the second side of the nail magazine in one embodiment of the present application;

[0035] Figure 5 This is a schematic diagram of a nail pushing member contacting with a plurality of nail seats to achieve nail pushing in one embodiment of the present application;

[0036] Figure 6 This is a structural schematic diagram of a nail pushing member in one embodiment of the present application;

[0037] Figure 7 This is a structural schematic diagram of an embodiment of the present application in which the staple cartridge assembly 1 further includes an elastic limiting unit 12;

[0038] Figure 8 This is a schematic diagram of the arrangement of an elastic limiting unit in an embodiment of the present application;

[0039] Fig. 9 This is a partial schematic diagram of a nail support in one embodiment of the present application;

[0040] Fig.10 This is a schematic diagram of the assembly of the protective part of the nail magazine assembly in one embodiment of the present application.

[0041] Description of reference numerals:

[0042] 1-nail magazine assembly; 11-nail magazine; 111-mounting hole; 112-first side wall; 113-knife groove; 1131-first opening; 114-nail groove group; 1141-nail groove; 115-slot; 116-nail push groove; 1161-second opening; 117-guide groove; 12-elastic limiting unit; 121-trigger part; 122-limiting part; 123-elastic force transmission structure; 12a-first 1. a section; 12b- the second section; 12c- the third section; 12d- the plug-in section; 13- the nail-pushing member; 131- the nail-pushing plate; 1311- the guide surface; 132- the guide portion; 14- the nail magazine cover; 141- the through hole; 15- the nail seat; 151- the sub-nail seat; 16- the protective member; 161- the clamping portion; 2- the nail magazine seat; 21- the groove structure; 3- the nail support seat; 31- the molding groove; 311- the groove; 4- the anastomosis nail. DETAILED DESCRIPTION

[0043] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] In the stapler assembly of the related art, the number of staples on both sides of the cutting knife's travel path is designed to be consistent, so that when the stapler of the related art is used for tissue anastomosis, the width of the stapled tissue retention end and the tissue removal end is consistent. However, the inventors found that the requirements for the degree of anastomosis between the tissue retention end and the tissue removal end are different. When the stapler of the related art is used, the tissue retention end will have a large amount of bleeding due to insufficient number of staples, thereby affecting the anastomosis effect; while the tissue removal end has an excessive number of staples, resulting in excessive anastomosis function and waste of staples.

[0048] In order to improve at least one of the shortcomings of the above-mentioned related technologies, the embodiments of the present application provide a stapler, a stapler assembly and a stapler. By distributing different numbers of staple slots on both sides of the knife slot on the stapler, different numbers of staples can be configured, thereby meeting the differentiated requirements of the tissue resection end and the tissue retention end for the degree of anastomosis, improving the anastomosis effect and reducing the waste of staples.

[0049] The following is a description of the stapler, stapler assembly and stapler provided in the embodiments of the present application in conjunction with the accompanying drawings. In the accompanying drawings, the Z axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis (that is, the direction of the arrow of the Z axis) represents the up, and the negative direction of the Z axis represents the down; in the accompanying drawings, the X axis represents the front and back position, and the positive direction of the X axis (that is, the direction of the arrow of the X axis) represents the front side, and the negative direction of the X axis represents the back side; in the accompanying drawings, the Y axis represents the horizontal direction and is designated as the left and right position, and the positive direction of the Y axis (that is, the direction of the arrow of the Y axis) represents the right side, and the negative direction of the Y axis represents the left side; it should be noted that the aforementioned Z axis, Y axis and X axis are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0050] Figure 1 Schematic diagram of a stapler in one embodiment of the present application. Figure 1As shown, the stapler provided in the embodiment of the present application includes a driving body 01, a transmission assembly 02, a cutting knife (not shown in the figure), a staple cartridge seat 2, a staple support seat 3 and a staple cartridge assembly 1. The transmission assembly 02 is connected between the staple cartridge assembly 1 and the driving body 01. The driving body 01 provides a driving force, and the momentum is transferred to the cutting knife through the transmission assembly 02, so that the cutting knife and the staple pusher 13 in the staple cartridge assembly 1 can slide synchronously in the staple cartridge assembly 1, thereby achieving the cutting and staple operation of the tissue. Figure 1 In the illustrated embodiment, the stapler seat 2, the anvil seat 3 and the stapler assembly 1 are all located at the front end of the stapler. The stapler can be used in abdominal surgery, for example, for the removal of diseased tissue, which is not a limitation.

[0051] Figure 2 This is a schematic diagram of the assembly of a nail magazine seat, a nail magazine assembly, and a nail support in one embodiment of the present application; Figure 3 FIG. 1 is an exploded schematic diagram of a nail magazine seat, a nail magazine assembly, and a nail support seat in one embodiment of the present application. Figure 2 and Figure 3 As shown, in this embodiment, the staple cartridge seat 2 is configured to fix the staple cartridge assembly 1, the anvil seat 3 is configured to clamp the tissue to be stapled together with the staple cartridge assembly 1, and is configured to abut the staples 4 fired from the staple cartridge assembly 1, so that the staples 4 are deformed to achieve the stapler operation on the tissue. Optionally, the anvil seat 3 is rotatably connected to one end of the staple cartridge seat 2, so that the anvil seat 3 and the staple cartridge seat 2 can move relative to each other and open and close.

[0052] The staple cartridge assembly 1 provided in the embodiment of the present application includes a staple cartridge 11, a staple pusher 13, a staple holder 15, and anastomosis staples 4. The anastomosis staples 4 are mounted on the staple holder 15, and the staple cartridge 11 is configured to receive the staple holder 15 and the anastomosis staples 4 before the anastomosis operation. The staple pusher 13 is configured to move relative to the staple cartridge 11 under the drive of the driving body 01 to drive the anastomosis staples 4 out of the staple cartridge 11 and into the tissue, thereby achieving the anastomosis operation.

[0053] In the embodiment of the present application, the nail magazine 11 is formed with a knife groove 113 and a plurality of nail groove groups 114. The knife groove 113 is extended along a first set direction (parallel to the extension direction of the X-axis in the figure), and the knife groove 113 is configured for the cutting knife to pass through. When the nail magazine 11 is used, the cutting knife can smoothly pass through the knife groove 113 to complete the cutting operation.

[0054] A plurality of nail groove groups 114 are distributed along the slot width direction of the knife slot 113 (parallel to the Y-axis direction in the figure), and at least one nail groove group 114 is distributed on both sides of the knife slot 113 in the slot width direction, and the number of nail groove groups 114 on both sides of the knife slot 113 is different. Each nail groove group 114 includes a plurality of nail grooves 1141 distributed along a first set direction. In other words, a nail groove group 114 is composed of a row of nail grooves 1141 arranged along the first set direction. The nail groove 1141 is configured to install the staple 4. The staple 4 is fired by the movement of the staple pusher 13, which will be exemplarily described later.

[0055] Since the knife groove 113 of the stapler 11 is extended along the first set direction, the knife groove 113 can limit the movement of the cutting knife along the first set direction. During the operation, the stapler presses the tissue to be operated through the staple holder 3 and the stapler 11, and the cutting knife can cut through the knife groove 113. At the same time, multiple nail groove groups 114 are distributed on both sides of the knife groove 113 along the groove width direction of the knife groove 113, and the number of nail groove groups 114 on both sides of the knife groove 113 is different, so that the anastomosis firmness and anastomosis width on both sides of the knife groove 113 along the groove width direction are different, which can improve the anastomosis firmness on the side with more nail groove groups 114 in a targeted manner, and can meet the differentiated anastomosis requirements of the tissue retention end and the tissue resection end. Specifically, the side with a larger number of staple groove groups 114 corresponds to the tissue retention end, and the side with a smaller number of staple groove groups 114 corresponds to the tissue resection end, which can meet the anastomosis requirements of the tissue retention end, reduce the amount of bleeding at the tissue retention end, and improve the anastomosis effect of the tissue retention end. It can also improve the problem of excessive anastomosis function and waste of staples 4 caused by too many staples 4 at the tissue resection end. In general, the present application is used to improve the utilization rate of staples 4, reduce the amount of bleeding at the tissue retention end, and improve the anastomosis effect of the tissue retention end.

[0056] like Figure 3 As shown, optionally, the knife groove 113 is arranged to extend in a straight line, and one end of the knife groove 113 is provided with a first opening 1131 for the cutting knife to pass through. Specifically, the first opening 1131 is arranged at the rear end of the knife groove 113, that is, the end facing the negative direction of the X-axis in the figure. In this arrangement, the cutting knife can enter the knife groove 113 through the first opening 1131 along a first set direction, and move linearly along the first set direction to perform a cutting action. Therefore, the staple cartridge 11 of this embodiment can be applied to a linear stapler to perform anastomosis in a straight line direction, with a simple structure and strong practicality.

[0057] like Figure 3As shown, optionally, the number of nail groove groups 114 on either side of the knife groove 113 along the groove width direction is greater than or equal to two. In other words, the number of nail groove groups 114 on the left and right sides of the knife groove 113 is greater than two; optionally, the number of nail groove groups 114 on the left side is three, and the number of nail groove groups 114 on the right side is two (not shown in this scheme). By setting in this way, it can be avoided that the number of nail groove groups 114 on both sides of the knife groove 113 is too small to affect the matching effect at the corresponding position.

[0058] Optionally, the difference in the number of nail groove groups 114 on both sides of the tool groove 113 along the groove width direction is less than or equal to 2. For example, the number of nail groove groups 114 on the left side of the tool groove 113 is greater than the number of nail groove groups 114 on the right side of the tool groove 113, and the difference between the number of nail groove groups 114 on the left side and the number of nail groove groups 114 on the right side is one, or two.

[0059] like Figure 3 As shown, optionally, four nail groove groups 114 are provided on the left side of the tool groove 113, and two nail groove groups 114 are provided on the right side of the tool groove 113. In other optional embodiments, three nail groove groups 114 are provided on the left side of the tool groove 113, and two nail groove groups 114 are provided on the right side of the tool groove 113 (not shown in this scheme).

[0060] Such a configuration can avoid a large difference in the number of staple slot groups 114 on both sides of the knife slot 113, which would cause the total size of the staple cartridge 11 along the knife slot 113 along its slot width direction to be too large, thereby affecting the applicability of the stapler.

[0061] It should be understood that along the slot width direction of the knife slot 113, that is, the Y-axis direction in the figure, the relative position relationship between the multiple nail slot groups 114 can be set according to actual needs. Optionally, the multiple nail slot groups 114 on the same side of the knife slot 113 are equidistantly distributed; optionally, the nail slots 1141 of two adjacent nail slot groups 114 are staggered, so that the staples 4 after anastomosis are arranged in multiple rows in the Y-axis direction, and the staples 4 of two adjacent rows on the same side are staggered, which can ensure the anastomosis effect.

[0062] Figure 4 FIG. 1 is a partial schematic diagram of the second side of the staple cartridge in one embodiment of the present application. Figure 4 As shown, the knife groove 113 and the nail groove 1141 pass through the nail magazine along the second setting direction (parallel to the Z-axis direction in the figure), and the second setting direction is perpendicular to the first setting direction and the groove width direction. The nail magazine 11 has a first side and a second side opposite to each other in the second setting direction. Figure 2 , Figure 3 The first side of the nail magazine 11 is shown. Figure 4The second side of the staple cartridge 11 is shown. The opening formed by the staple groove 1141 on the first side of the staple cartridge 11 is configured to allow the front end of the fired staple 4 to extend out. The second side of the staple cartridge 11 is provided with a plurality of staple pushing grooves 116 extending along a first set direction. The staple pushing grooves 116 are provided between two adjacent staple groove groups 114 on the same side of the knife groove 113. The staple pushing grooves 116 are connected to the staple grooves 1141 of the two adjacent staple groove groups 114 in the groove width direction. The staple pushing member 13 is provided on the second side of the staple cartridge 11. The staple pushing member 13 is configured to be movable in the first set direction relative to the staple cartridge 11. The staple pushing member 13 at least partially extends into the staple pushing groove 116 and can move along the staple pushing groove 116 to push the staple 4 located in the staple groove 1141 to move toward the first side of the staple cartridge 11. The staple pushing groove 116 is configured to allow at least a portion of the staple pushing member 13 to pass through, so that the staples 4 located in the staple groove 1141 can be pushed by the staple pushing member 13 to move toward the first side of the staple magazine 11. It can be understood that when the staple pushing member 13 moves along the staple pushing groove 116, it can directly or indirectly abut against the staples 4, and the staples 4 can move toward the first side of the staple magazine 11 under the pushing action of the staple pushing member 13, thereby piercing and stapling the tissue pressed against the first side of the staple magazine 11.

[0063] Figure 5 This is a schematic diagram of a nail pushing member contacting with a plurality of nail seats to achieve nail pushing in one embodiment of the present application; Figure 6 This is a schematic diagram of the structure of a nail pusher in one embodiment of the present application. Figures 2 to 6 As shown, optionally, the nail pushing member 13 includes a plurality of nail pushing plates 131 arranged at intervals along the slot width direction of the knife slot 113, and the number of the nail pushing plates 131 is equal to that of the nail pushing slots 116 and is inserted into the nail pushing slots 116 in a one-to-one correspondence. In this embodiment, one side of the knife slot 113 in the slot width direction is provided with one nail pushing slot 116, and the other side is provided with two nail pushing slots 116, so the number of the nail pushing plates 131 is three. The staples 4 are slidably installed in the staple slots 1141 in the up-down direction through the staple holder 15, and the nail pushing plates 131 move along the nail pushing direction (such as the positive direction of the X-axis in the figure) to push the staple holder 15 upward to fire, so that the staples 4 can be pierced out from the first side of the staple cartridge 11.

[0064] In the embodiment of the present application, the nail seat 15 is accommodated in the nail groove 1141 and the nail pushing groove 116, and the nail seat 15 is configured to support the anastomosis nail 4. Exemplarily, at least part of the nail seat 15 (such as each nail seat 15) includes two connected sub-nail seats 151, and the two sub-nail seats 151 are roughly distributed along the slot width direction of the knife slot 113. The two sub-nail seats 151 are respectively slidably matched with the nail grooves 1141 in the two adjacent nail groove groups 114, so that the nail seat 15 can move in the second set direction (Z axis extension direction in the figure, that is, the up and down direction) relative to the nail magazine 11. The two anastomosis nails 4 are respectively arranged on one end of the first side of the two sub-nail seats 151 close to the nail magazine 11. In other words, a anastomosis nail 4 is installed on the upward end of each sub-nail seat 151, and the two sub-nail seats 151 are slidably installed in the nail grooves 1141 of different nail groove groups 114 along the up and down directions. It can be understood that the nail seat 15 spans between two different nail groove groups 114, and the middle part is located in the nail pushing groove 116, so that the nail pushing plate 131 can push the entire nail seat 15 to move along the second set direction when moving in the nail pushing groove 116. Optionally, the nail seat 15 can be integrally formed or assembled from two sub-nail seats 151.

[0065] Optionally, a guide surface 1311 is provided at one end of the nail pushing plate 131 in the first set direction, and the guide surface 1311 is inclined to the first set direction and inclined toward the second side of the nail magazine 11; the guide surface 1311 is configured to push the staples 4 to move toward the first side of the nail magazine 11 when moving along the first set direction. When the cutting knife drives the nail pushing member 13 to move from back to front, the guide surface 1311 of the nail pushing plate 131 contacts the bottom of the nail seat 15. When the nail pushing plate 131 continues to move in the first set direction, the nail seat 15 is limited by the nail groove 1141 and cannot move in the first set direction. Therefore, relative slip occurs between the guide surface 1311 and the nail seat 15, and the nail seat 15 is forced to move toward the first side of the nail magazine 11 along the second set direction, thereby pushing the nail seat 15 to slide upward relative to the nail magazine 11, thereby achieving the firing of the staples 4.

[0066] Optionally, a second opening 1161 is provided at one end of the nail pushing groove 116, and the second opening 1161 is configured to allow the nail pushing member 13 to pass through along the first set direction. Optionally, a portion of the nail pushing member 13 can enter the nail pushing groove 116 from the second opening 1161 along the first set direction. In this embodiment, the second opening 1161 and the first opening 1131 are located at the same end of the nail magazine 11.

[0067] Optionally, the nail pushing member 13 further includes a guide portion 132, and a guide groove 117 extending along the first set direction is provided on the second side of the nail magazine 11, and the guide groove 117 is slidably matched with the guide portion 132 of the nail pushing member 13. Through the cooperation between the guide portion 132 and the guide groove 117, the nail pushing member 13 can move more stably relative to the nail magazine 11. Optionally, the guide portion 132 is plate-shaped, and the guide portion 132 is arranged parallel and spaced between each nail pushing plate 131. Optionally, the guide portion 132 is arranged on one side of the plurality of nail pushing plates 131 in the slot width direction of the tool slot 113; optionally, the guide portion 132 is located on the side of the tool slot 113 with fewer nail slot groups 114, so that the cooperation stability of the nail pushing member 13 and the nail magazine 11 on both sides in the slot width direction is more balanced.

[0068] Figure 7 This is a structural schematic diagram of an embodiment of the present application in which the staple cartridge assembly 1 further includes an elastic limiting unit 12; Figure 8 FIG. 1 is a schematic diagram of the arrangement of the elastic limiting unit 12 in one embodiment of the present application. Figure 7 and Figure 8 As shown, optionally, the sliding direction of the nail pushing member 13 is consistent with the extension direction of the cutting groove 113 of the nail magazine 11; the nail magazine assembly 1 also includes an elastic limiting unit 12, and a mounting hole 111 is provided on the nail magazine 11, and the elastic limiting unit 12 is installed at the mounting hole 111; the elastic limiting unit 12 includes an elastic force transmission structure 123 and a trigger part 121 and a limiting part 122 located at both ends of the elastic force transmission structure 123, the trigger part 121 and the limiting part 122 are respectively arranged close to the inner end and the outer end of the mounting hole 111, the trigger part 121 is arranged in the nail pushing movement path of the nail pushing member 13 along the first set direction, and the elastic limiting unit 12 is configured to generate elastic deformation when the trigger part 121 is pushed by the nail pushing member 13, so that the trigger part 121 exits the nail pushing movement path; the elastic force transmission structure 123 is configured to apply an elastic driving force extending toward the outer end of the mounting hole 111 to the limiting part 122 when the trigger part exits the nail pushing movement path.

[0069] In this embodiment, the limiting portion 122 is arranged corresponding to a set area of ​​the outer surface of the nail magazine 11, and the set area is the area of ​​the outer surface of the nail magazine 11 that is opposite to the nail magazine seat 2 after the nail magazine 11 is assembled on the nail magazine seat 2. In this way, when the nail magazine assembly 1 is assembled on the nail magazine seat 2, the limiting portion 122 is driven by the elastic force transmission structure 123 to extend toward the outer end of the mounting hole 111, and it will abut against the inner wall of the nail magazine seat 2, and the elastic limiting unit 12 is in a compressed state, accumulating elastic potential energy.

[0070] In this embodiment, the staple cartridge assembly 1 is installed in the staple cartridge seat 2. Optionally, the staple cartridge seat 2 is formed with a groove structure 21, and the staple cartridge assembly 1 is installed in the groove structure 21. At least the top of the staple cartridge assembly 1 is exposed to the groove structure 21, so that the subsequent staples 4 can be pushed out from the top of the staple cartridge assembly 1 and contact the staple holder 3. Optionally, the set area of ​​the outer surface of the staple cartridge 11 is the area opposite to the inner side wall of the groove structure 21. It can be understood that when the trigger portion 121 is squeezed by the staple pusher 13 and exits the staple pusher motion path, the staple cartridge seat 2 will abut the limiting portion 122 so that the elastic limiting unit 12 is compressed in the slot width direction of the knife slot 113; when the anastomosis operation is completed, the staple cartridge assembly 1 is removed from the groove structure 21, and the staple cartridge seat 2 releases the abutment limit on the limiting portion 122, so that the limiting portion 122 will extend outward under the elastic driving force of the elastic force transmission structure 123. Thereafter, the nail magazine assembly 1 cannot be inserted into the groove structure 21 of the nail magazine seat 2 again due to the limiting effect of the limiting portion 122 .

[0071] In this embodiment, the staple cartridge assembly 1 further includes a staple cartridge cover 14, which is located on the back side of the staple cartridge 11 and is detachably connected to the staple cartridge 11. The staple cartridge assembly 1 is connected to the staple cartridge seat 2 via the staple cartridge cover 14. Optionally, the staple cartridge cover 14 forms a receiving space, and the staple cartridge 11 is disposed in the receiving space of the staple cartridge cover 14.

[0072] The staple pusher 13 is partially located between the staple cartridge cover 14 and the staple cartridge 11, and the staple cartridge cover 14 and the staple cartridge 11 jointly realize the sliding guide of the staple pusher 13 along the first set direction. The staple pusher 13 pushes the staples from the back to the front. Specifically, when the stapler is extended to the preset position, and the staple support 3 and the staple cartridge support 2 are closed to press the tissue to be sutured, the staple pusher 13 moves from the back to the front under the driving action (for example, under the driving action of the cutting knife), driving the staples 4 to be fired from the back to the front in sequence, for example, firing upward, and the fired staples 4 hit the forming grooves 31 on the staple support 3, so that the staples 4 are deformed to complete the suturing, for example, the staples 4 are deformed into a B shape by contact with the forming grooves 31, which can meet the anastomosis requirements.

[0073] Fig. 9 FIG. 1 is a partial schematic diagram of an anvil seat in one embodiment of the present application. Fig. 9 As shown, the side of the anvil 3 facing the staple cartridge assembly 1 is provided with a plurality of forming grooves 31, the number of the forming grooves 31 being the same as the number of the staple slots 1141 on the staple cartridge, and when the anvil 3 is engaged, the plurality of forming grooves 31 and the plurality of staple slots 1141 are directly opposite in the second set direction. Since the staple 4 has two tips, each forming groove 31 has two pairs of grooves 311, so that the two tips of the staple 4 can be bent and deformed in a direction close to each other when they are respectively inserted into the two grooves 311, and finally the staple 4 is deformed into a B shape.

[0074] It should be noted that when the nail pushing member 13 is located at its initial limit position, that is, at the rear end position of the nail magazine 11, for example, when the nail magazine 11 of the nail magazine assembly 1 is full of staples 4, the nail pushing member 13 does not contact the triggering portion 121, so the triggering portion 121 is located in the movement path of the nail pushing member 13 along its nail pushing movement, and the limiting portion 122 will not move to the outside of the nail magazine 11 due to the action of the nail pushing member 13 on the triggering portion 121. Optionally, when the triggering portion 121 is not acted upon by the nail pushing member 13, the limiting portion 122 does not contact the nail magazine seat 2, for example, does not contact the inner wall surface of the groove structure 21 of the nail magazine seat 2, and the nail magazine assembly 1 can be relatively smoothly loaded into the groove structure 21 of the nail magazine seat 2.

[0075] In this specification, the content of this application is described by taking the installation hole 111 located on the first side wall 112 of the nail magazine 11 as an example, and the first side wall 112 is a side plate of the nail magazine 11 along the width direction (that is, the slot width direction of the knife slot 113). It should be understood that it is not limited to this, for example, the installation hole 111 can also be set on the bottom plate of the nail magazine 11, which will not be described in detail here.

[0076] The triggering portion 121 of the elastic limiting unit 12 is arranged close to the inner end of the mounting hole 111. For example, the triggering portion 121 of the elastic limiting unit 12 is located on the side of the inner end face of the mounting hole 111 away from the outer end face, and is located in the movement path of the nail pushing member 13 along its nail pushing direction (the nail pushing direction is defined as moving from back to front).

[0077] The limiting portion 122 of the elastic limiting unit 12 is arranged near the outer end of the mounting hole 111. For example, the limiting portion 122 of the elastic limiting unit 12 is located on the side of the outer end face of the mounting hole 111 close to the inner end face, and the limiting portion 122 is arranged corresponding to a set area of ​​the outer surface of the nail magazine 11. The set area is an area of ​​the outer surface of the nail magazine 11 that is opposite to the nail magazine seat 2, for example, it is arranged opposite to the inner wall of the groove structure 21 on the nail magazine seat 2 for installing the nail magazine assembly 1.

[0078] The specific structure of the elastic limiting unit 12 is not limited, and it only needs to have an elastic force transmission structure 123 and a trigger part 121 and a limiting part 122 located at both ends of the elastic force transmission structure 123. The elastic force transmission structure 123 is configured to transmit elastic force between the trigger part 121 and the limiting part 122. For example, when the first one of the limiting part 122 and the trigger part 121 is unobstructed in the left-right direction, and the second one of the limiting part 122 and the trigger part 121 is compressed in the left-right direction, the elastic force transmission structure 123 can be used to make the limiting part 122 and the second one of the trigger part 121 move together. When the first one of the limiting part 122 and the trigger part 121 is blocked in the left-right direction, and the second one of the limiting part 122 and the trigger part 121 is compressed in the left-right direction, the potential energy of the elastic force transmission structure 123 increases, thereby satisfying the requirement of reducing the distance between the limiting part 122 and the trigger part 121 compressed in the left-right direction.

[0079] Through this arrangement, the sliding direction of the nail pushing member 13 is consistent with the extension direction of the cutting groove 113 of the nail magazine 11, and the mounting hole 111 is set on the nail magazine 11. The elastic limiting unit 12 is installed at the mounting hole 111 to achieve the installation of the elastic limiting unit 12 in the nail magazine 11. The elastic limiting unit 12 includes an elastic force transmission structure 123 and a trigger part 121 and a limiting part 122 located at both ends of the elastic force transmission structure 123. The trigger part 121 and the limiting part 122 are respectively close to the mounting hole The inner and outer ends of 111 are arranged. When the staple cartridge assembly 1 is mounted on the staple cartridge seat 2 of the stapler, since the limiting portion 122 is arranged corresponding to the set area of ​​the outer surface of the staple cartridge 11, and the set area is the area of ​​the outer surface of the staple cartridge 11 that is opposite to the staple cartridge seat 2, when the staple pusher 13 moves along its staple pushing direction, for example, from back to front and contacts the trigger portion 121, at least part of the staples 4 in the staple cartridge 11 are fired, and the trigger portion 121 is pushed by the staple pusher 13 to the outside of the staple cartridge 11. The elastic force transmission structure 123 is acted upon by the triggering part 121 to drive the limiting part 122 to move toward the outside of the nail magazine 11, so that the limiting part 122 abuts against the inner wall of the groove structure 21 of the nail magazine seat 2. At this time, the potential energy of the elastic force transmission structure 123 is relatively large, but it does not affect the normal use of the nail magazine assembly 1 on the nail magazine seat 2, and the nail magazine assembly 1 can be normally disassembled from the nail magazine seat 2; if the nail magazine assembly 1 is disassembled from the nail magazine seat 2, the abutting effect of the nail magazine seat 2 on the limiting part 122 will be released, and the elastic force transmission structure 123 will be released. Under the action of the potential energy of the force transmission structure 123, the limit portion 122 will move toward the outside of the nail magazine 11, so that the size of the nail magazine assembly 1 at the limit portion 122 is larger, which actually forms a stopper. Specifically, it forms an obstruction when the nail magazine assembly 1 is again installed into the nail magazine seat 2 in this state. That is to say, the difficulty of installing the nail magazine assembly 1 with at least some of the staples 4 fired into the nail magazine seat 2 will be greatly increased, thereby preventing the nail magazine assembly 1 with at least some of the staples 4 fired from being misinstalled to a certain extent.

[0080] like Figure 7 and Figure 8 As shown, optionally, the nail magazine 11 is provided with a trigger portion 121 corresponding to the end limit position of the nail pushing movement path of the nail pushing member 13 .

[0081] The nail magazine assembly 1 of this embodiment includes only one elastic limiting unit 12, and the elastic limiting unit 12 includes only one triggering portion 121 and one limiting portion 122. In this case, the position of the mounting hole 111 corresponds to the end limit position of the nail pushing member 13, and this application will be explained later using this as an example.

[0082] However, it should be understood that it is not limited to this. For example, the number of mounting holes 111 can be set to multiple, and the number of elastic limiting units 12 can be set to multiple accordingly. Alternatively, the elastic limiting unit 12 can include multiple triggering parts 121 and corresponding elastic force transmission structures 123 and limiting parts 122. In this case, when the nail pushing member 13 completes the pushing of different numbers of staples 4 and is located at different positions, it can trigger the corresponding triggering part 121 to prevent the nail magazine assembly 1 from being misassembled after disassembling the nail magazine assembly 1. It can be configured according to actual needs and will not be described in detail here.

[0083] It should be understood that the end limit position is the position where the nail pushing member 13 is located at the front end of the nail magazine 11. When the nail pushing member 13 is located at the end limit position, all the staples 4 in the nail magazine 11 are in a fired state, that is, the nail magazine 11 is in an empty state. With such a configuration, when the nail magazine assembly 1 is disassembled from the nail magazine seat 2, the limit portion 122 of the elastic limit unit 12 can be used to protect the empty nail magazine assembly 1 from mis-assembly, thereby preventing the empty nail magazine assembly 1 from being assembled to the nail magazine seat 2, which may cause adverse consequences.

[0084] Optionally, the staple cartridge assembly 1 is configured to be connected to the staple cartridge seat 2 via a staple cartridge cover 14 , the staple cartridge cover 14 is provided with a through hole 141 , the through hole 141 is communicated with the mounting hole 111 , and the through hole 141 is configured to allow the limiting portion 122 to pass through.

[0085] Specifically, the nail magazine cover 14 is detachably connected to the nail magazine 11, such as a snap-on connection; the nail magazine assembly 1 is connected to the groove structure 21 of the nail magazine seat 2 through the nail magazine cover 14, such as a snap-on connection. The specific connection method between the two can adopt related technologies, such as the related technologies of the applicant of this application before the application date, which will not be described in detail here.

[0086] In this way, on the basis of protecting the bottom of the nail magazine 11 by the nail magazine cover 14, it is possible to ensure that the limiting portion 122 can smoothly move toward the outside of the nail magazine 11, for example, move in the left and right directions and abut against the inner wall of the groove structure 21 of the nail magazine seat 2, or form an anti-misinstallation mechanism for the empty nail magazine assembly 1.

[0087] Optionally, the elastic limiting unit 12 is a spring structure, the fixed end of the spring structure is fixedly arranged at the edge of the mounting hole 111, and the elastic force transmission structure 123, the trigger part 121 and the limiting part 122 are all formed on the spring structure.

[0088] Specifically, the spring sheet structure can be formed by one spring sheet. In this case, the spring sheet structure forms the elastic force transmission structure 123, the trigger part 121 and the limit part 122. The elastic limit unit 12 has a simple structure and high reliability. In other embodiments, the spring sheet structure can also be formed by connecting multiple spring sheets. This is not a limitation as long as it can meet the use requirements.

[0089] like Figure 8 As shown, optionally, the spring sheet structure is bent to form a first section 12a, a second section 12b and a third section 12c which are connected in sequence. The first section 12a forms a fixed end of the spring sheet structure and is fixedly connected to the nail magazine 11 on one circumferential side of the mounting hole 111. The second section 12b and the third section 12c are respectively inclined relative to the first section 12a. The third section 12c is arranged at an angle to the second section 12b, and the opening direction of the angle formed by the second section 12b and the third section 12c is consistent with the hole depth direction of the mounting hole 111. The connecting portion of the second section 12b and the third section 12c forms a trigger portion 121, and the third section 12c forms an elastic force transmission structure 123.

[0090] Exemplarily, the spring structure is attached to the nail magazine 11 in the first section 12a so that the fixed end of the spring structure is fixed at the position of the nail magazine 11, and the inner wall of the nail magazine cover 14 and the outer wall of the nail magazine 11 clamp the fixed end of the spring structure. The limiting portion 122 is arranged at one end of the third section 12c close to the outside of the mounting hole 111, the triggering portion 121 is arranged at one end of the third section 12c close to the inside of the mounting hole 111, and the second section 12b is arranged obliquely relative to the first section 12a.

[0091] In this way, the elastic limiting unit 12 can be formed by bending a single spring sheet, and there is no need to use multiple components to form the elastic limiting unit 12. The structure is simple, so that the third section 12c can move as a whole relative to the first section 12a, and the position of the third section 12c can be reset through the second section 12b. For example, the end of the third section 12c close to the second section 12b can be reset relative to the first section 12a in the depth direction of the mounting hole 111, that is, in the left and right directions. The third section 12c is tilted relative to the first section 12a, so that the triggering part 121 and the limiting part 122 of the third section 12c can move relative to each other and accumulate potential energy to a certain extent through the elastic deformation of the third section 12c. The relative position of the triggering part 121 and the limiting part 122 can be reset through the deformation of the third section 12c itself. The structure is simple and practical.

[0092] like Figure 8 As shown, optionally, the first section 12a is connected to the plug section 12d, and a slot 115 is provided on the nail magazine 11, and the plug section 12d is inserted into the slot 115. Exemplarily, the first section 12a is bent at one end away from the second section 12b to form the plug section, and the depth direction of the slot 115 can be consistent with the depth direction of the mounting hole 111.

[0093] For example, when the first section 12a is attached to the nail magazine 11 at the outer end surface of the mounting hole 111, the end of the first section 12a away from the second section 12b is bent toward the inside of the nail magazine 11 to form the plug-in portion. In this way, the plug-in connection between the plug-in section 12d and the slot 115 can improve the reliability of the connection between the fixed end of the spring structure and the nail magazine 11.

[0094] It should be understood that one or more of the trigger portion 121 and the limiting portion 122 can be provided with a guide slope for contact guidance as needed. For example, one or more of the trigger portion 121 and the limiting portion 122 can be provided with a spherical convex structure, so that when the nail pusher 13 contacts the trigger portion 121, it is possible to avoid the contact surface damage caused by the scratching between the two, and when the limiting portion 122 contacts the nail magazine seat 2, it is possible to avoid the contact surface damage caused by the scratching between the two, thereby improving the service life of the components and reducing the possibility of abnormal noise and debris generated by scratching.

[0095] In the above embodiment, optionally, a groove structure 21 is provided on the nail magazine seat 2, and the nail magazine assembly 1 can be placed in the groove structure 21 along the first set direction, and the first section 12a, the second section 12b and the third section 12c are connected in sequence along the first set direction.

[0096] Optionally, the staple cartridge assembly 1 is configured to move from front to back and be placed into the groove structure 21, and the first section 12a, the second section 12b and the third section 12c are sequentially arranged from front to back. At this time, the end of the third section 12c forms a limiting portion 122, and the other end forms a trigger portion 121. When the staple cartridge assembly 1 pushes the nail member 13 and the trigger portion 121 and the staple cartridge assembly 1 and the staple cartridge assembly 1 are in a disassembled state, if the staple cartridge assembly 1 needs to be moved from front to back and pushed into the groove structure 21, at this time, the end of the third section 12c forms a limiting portion 122, and the other end forms a trigger portion 121. The limiting portion 122 extends beyond the outer surface of the nail magazine assembly 1 in the left-right direction, for example, beyond the outer surface of the nail magazine cover 14, and the front end surface of the groove structure 21 of the nail magazine seat 2 will abut against the limiting portion 122. As the nail magazine assembly 1 is pushed from front to back, the limiting portion 122 has a tendency to move forward relative to the first section 12a due to the force, and at least has a tendency to expand outward at least in the initial stage, thereby making it more difficult to push the nail magazine assembly 1 from front to back into the groove structure 21, thereby achieving a better anti-misinstallation effect.

[0097] like Figure 8As shown, in the above embodiment, optionally, the nail magazine cover 14 presses the fixed end of the spring structure against the end surface of the outer end of the mounting hole 111 .

[0098] Specifically, the inner surface of the nail magazine cover 14 along the left-right direction presses the first section 12a against the end surface of the outer end of the mounting hole 111 and keeps the plug-in section 12d plugged in the slot 115, thereby ensuring the reliability of the connection between the spring structure and the nail magazine 11.

[0099] At this point, it should be understood that a receiving groove may be provided at the end surface of the nail magazine 11 at the outer end of the mounting hole 111, and the receiving groove is configured to receive the spring structure, such as receiving the first section 12a.

[0100] like Figure 8 As shown, in the above embodiment, optionally, the first side walls 112 on both sides of the nail magazine 11 along the width direction are provided with mounting holes 111 and elastic limiting units 12. Optionally, the two mounting holes 111 and the two elastic limiting units 12 are symmetrically arranged in the left and right directions. In this way, when preventing mis-installation, the left and right sides of the nail magazine assembly 1 are both blocked by the two limiting parts 122, and the force is relatively balanced, avoiding uneven force on the left and right sides that may cause damage to the nail magazine assembly 1, and the reliability is high.

[0101] It should be understood that the above is an exemplary description of the structure of the elastic limiting unit 12, but it is not limited thereto. For example, in another optional scheme of the spring structure, the end of the second section 12b away from the first section 12a can be connected between the two ends of the third section 12c, which will not be described in detail here.

[0102] Fig.10 FIG. 1 is a schematic diagram of the assembly of the protective member 16 of the staple cartridge assembly 1 in one embodiment of the present application. Fig.10 As shown, optionally, the staple cartridge assembly 1 further includes a protective member 16, which covers the first side of the staple cartridge 11 before the anastomosis operation, thereby protecting the first side of the staple cartridge 11. For example, the protective member 16 can prevent external foreign matter from entering the staple groove 1141 of the staple cartridge 11, and at the same time, can also prevent the staples 4 from falling out of the staple groove 1141. Optionally, the protective member 16 is respectively provided with one or more clamping parts 161 in the left and right directions, and the clamping parts 161 can be clamped and matched with the staple cartridge 11 or the staple cartridge seat 2, so that the protective member 16 is not easy to fall off. When the anastomosis operation is to be performed, the protective member 16 needs to be removed; it should be understood that the external force required to remove the protective member 16 needs to be greater than the clamping force of the clamping part 161. In other optional embodiments, the protective member 16 can also be fixed in other forms, such as being attached to the first side of the staple cartridge 11 by bonding, and before the anastomosis operation is performed, the protective member 16 can be torn off by applying an external force greater than the bonding force.

[0103] In summary, compared with the related prior art, the knife groove of the stapler provided in the embodiment of the present application is extended along the first set direction, and the knife groove is configured for the cutting knife to pass through. When the stapler is applied to the stapler, specifically, when the stapler presses the tissue to be operated through the staple holder and the stapler, the cutting knife can pass through the knife groove to perform the cutting operation. At the same time, multiple nail groove groups are distributed on both sides of the knife groove along the groove width direction of the knife groove, and the number of nail groove groups on both sides of the knife groove is different, so that the anastomosis firmness and anastomosis width on both sides of the knife groove along the groove width direction are different, which can specifically improve the anastomosis firmness on the side with more nail groove groups, and can meet the differentiated anastomosis requirements of the tissue retention end and the tissue resection end. Specifically, the side with a larger number of staple groove groups corresponds to the tissue retention end, and the side with a smaller number of staple groove groups corresponds to the tissue removal end, which can meet the anastomosis requirements of the tissue retention end, improve the anastomosis effect of the tissue retention end, and reduce the amount of bleeding at the tissue retention end; at the same time, it can also avoid excessive anastomosis function caused by too many staples at the tissue removal end, resulting in waste of staples. In general, the staple cartridge of the embodiment of the present application is conducive to improving the utilization rate of staples, reducing the amount of bleeding at the tissue retention end, and improving the anastomosis effect of the tissue retention end.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0105] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

[0106] Industrial Applicability

[0107] In summary, the present application provides a staple magazine, a staple magazine assembly, and a stapler, which are beneficial to improving the utilization rate of staples, reducing the amount of bleeding at the tissue retention end, and improving the anastomosis effect of the tissue retention end.

Claims

1. A nail magazine, characterized in that: A knife groove (113) and a plurality of nail groove groups (114) are formed on the staple cartridge. The knife groove (113) is extended along a first set direction. The knife groove (113) is configured to allow a cutting knife to pass through. Each of the nail groove groups (114) includes a plurality of nail grooves (1141) distributed along the first set direction. The nail grooves (1141) are configured to install staples (4). The plurality of nail groove groups (114) are arranged at intervals along the groove width direction of the knife groove (113). At least one nail groove group (114) is distributed on both sides of the knife groove (113) in the groove width direction, and the number of the nail groove groups (114) on both sides of the knife groove (113) in the groove width direction is different.

2. The staple cartridge according to claim 1, wherein: The tool groove (113) is extended along a straight line, and a first opening (1131) is provided at one end of the tool groove (113). The first opening (1131) is configured to allow the cutting knife to enter the tool groove (113) along the first set direction.

3. The staple cartridge according to claim 1, wherein: The plurality of nail groove groups (114) on the same side of the tool groove (113) are distributed at equal intervals.

4. The staple cartridge according to claim 1, wherein: The nail grooves (1141) of two adjacent nail groove groups (114) on the same side of the tool groove (113) are staggered.

5. The staple cartridge according to claim 1, wherein: The number of the nail groove groups (114) on either side of the tool groove (113) along the groove width direction is greater than or equal to two.

6. The staple cartridge according to any one of claims 1 to 5, characterized in that: The difference in the number of the nail groove groups (114) on both sides of the tool groove (113) along the groove width direction is less than or equal to two.

7. The staple cartridge according to any one of claims 1 to 5, characterized in that: The knife groove (113) and the nail groove (1141) penetrate the nail magazine along a second set direction, and the second set direction is perpendicular to the first set direction and the groove width direction; the nail magazine has a first side and a second side opposite to each other in the second set direction, and the opening formed by the nail groove (1141) on the first side of the nail magazine is configured to allow the front end of the fired anastomotic staple (4) to extend out, and the second side of the nail magazine is provided with a plurality of nail pushing grooves (116) extending along the first set direction, and the nail pushing grooves (116) are arranged between two adjacent nail groove groups (114) on the same side of the knife groove (113), and the nail pushing grooves (116) are connected with the nail grooves (1141) of the two adjacent nail groove groups (114) in the groove width direction, and the nail pushing grooves (116) are configured to allow at least a portion of the nail pushing member (13) to pass through so as to push the anastomotic staple (4) located in the nail groove (1141) to move toward the first side of the nail magazine.

8. The staple cartridge according to claim 7, wherein: One end of the nail pushing groove (116) is provided with a second open opening (1161), and the second open opening (1161) is configured to allow the nail pushing member (13) to pass through along the first set direction.

9. The staple cartridge according to claim 7, wherein: The second side of the nail magazine is provided with a guide groove (117) extending along the first set direction, and the guide groove (117) is configured to slideably cooperate with the guide portion (132) of the nail pushing member (13).

10. A staple cartridge assembly, characterized in that: It comprises a nail pushing member (13) and a nail magazine as claimed in any one of claims 1 to 6, wherein the nail pushing member (13) is configured to be movable relative to the nail magazine to fire the anastomotic staples (4) in the nail slots (1141) of the nail magazine.

11. The staple cartridge assembly according to claim 10, wherein: The cutting groove (113) and the nail groove (1141) of the nail magazine penetrate the nail magazine along a second set direction, and the second set direction is perpendicular to the first set direction and the groove width direction of the cutting groove (113); the nail magazine has a first side and a second side opposite to each other in the second set direction, and the opening formed by the nail groove (1141) on the first side of the nail magazine is configured to allow the front end of the fired staple (4) to extend out, and the second side of the nail magazine is provided with a plurality of nail pushing grooves (116) extending along the first set direction, and the nail pushing grooves (116) are provided between two adjacent nail groove groups (114) on the same side of the cutting groove (113), and the nail pushing grooves (116) are connected with the nail grooves (1141) of the two adjacent nail groove groups (114) in the groove width direction; The nail pushing member (13) is arranged on the second side of the nail magazine, and the nail pushing member (13) at least partially extends into the nail pushing groove (116) and can move along the nail pushing groove (116) to push the anastomosis nail (4) located in the nail groove (1141) to move toward the first side of the nail magazine.

12. The staple cartridge assembly according to claim 11, wherein: The nail pushing member comprises a plurality of nail pushing plates (131), the plurality of nail pushing plates (131) are arranged at intervals along the groove width direction, the number of the nail pushing plates (131) is equal to the number of the nail pushing grooves (116), and the nail pushing plates (131) are inserted into the nail pushing grooves (116) in a one-to-one correspondence.

13. The staple cartridge assembly according to claim 12, wherein: A guide surface (1311) is provided at one end of the nail pushing plate (131) in the first set direction, and the guide surface (1311) is inclined to the first set direction and inclined toward the second side of the nail magazine; the guide surface (1311) is configured to push the anastomotic staple (4) to move toward the first side of the nail magazine when moving along the first set direction.

14. The staple cartridge assembly according to claim 11, wherein: The second side of the nail magazine is provided with a guide groove (117) extending along the first set direction, and the nail pushing member (13) also includes a guide portion (132), and the guide groove (117) is slidably matched with the guide portion (132) of the nail pushing member (13).

15. The staple cartridge assembly according to claim 11, wherein: The nail magazine assembly also includes a nail seat (15) and a staple (4), wherein the nail seat (15) is accommodated in the staple groove (1141) and the staple pushing groove (116), and the nail seat (15) includes two connected sub-nail seats (151), and the two sub-nail seats (151) are respectively slidably matched with the nail grooves (1141) in two adjacent nail groove groups (114), so that the nail seat (15) can move relative to the nail magazine in the second set direction, and one of the staples (4) is provided on one end of each sub-nail seat (151) close to the first side of the nail magazine.

16. The staple cartridge assembly according to any one of claims 10 to 15, characterized in that: The nail pushing member (13) is configured to be movable relative to the nail magazine in the first set direction; the nail magazine assembly further comprises an elastic limiting unit (12), the nail magazine is provided with a mounting hole (111), and the elastic limiting unit (12) is mounted at the mounting hole (111); the elastic limiting unit (12) comprises an elastic force transmission structure (123) and a triggering portion (121) and a limiting portion (122) located at two ends of the elastic force transmission structure (123), the triggering portion (121) and the limiting portion (122) are respectively close to the mounting hole (111). The inner and outer ends of the mounting hole (111) are arranged, the trigger portion (121) is arranged in the nail pushing movement path of the nail pushing member (13) along the first set direction, the elastic limiting unit (12) is configured to generate elastic deformation when the trigger portion (121) is pushed by the nail pushing member, so that the trigger portion (121) withdraws from the nail pushing movement path; the elastic force transmission structure (123) is configured to apply an elastic driving force extending toward the outer end of the mounting hole (111) to the limiting portion (122) when the trigger portion (121) withdraws from the nail pushing movement path.

17. The staple cartridge assembly according to claim 16, wherein: The nail magazine is provided with the trigger portion (121) corresponding to the end limit position of the nail pushing movement path of the nail pushing member (13); And / or, the elastic limiting unit (12) is a spring sheet structure, the fixed end of the spring sheet structure is fixedly arranged at the edge of the mounting hole (111), and the elastic force transmission structure (123), the trigger part (121) and the limiting part (122) are all formed on the spring sheet structure.

18. The staple cartridge assembly according to claim 17, wherein: The spring sheet structure is bent to form a first section (12a), a second section (12b) and a third section (12c) which are connected in sequence. The first section (12a) forms a fixed end of the spring sheet structure and is fixedly connected to the nail magazine. The second section (12b) and the third section (12c) are respectively arranged obliquely relative to the first section (12a). The third section (12c) and the second section (12b) are arranged at an angle, and the opening direction of the angle formed by the second section (12b) and the third section (12c) is consistent with the hole depth direction of the mounting hole (111). The connection portion between the second section (12b) and the third section (12c) forms the trigger portion (121), and the third section (12c) forms the elastic force transmission structure (123).

19. The staple cartridge assembly according to claim 17, wherein: The nail magazine assembly also includes a nail magazine cover (14), the nail magazine cover (14) is detachably connected to the nail magazine, the nail magazine cover (14) forms a accommodating space, the nail magazine is arranged in the accommodating space of the nail magazine cover (14), the nail magazine cover (14) is provided with a through hole (141), the through hole (141) is connected to the mounting hole (111), and the through hole (141) is configured to allow the limiting portion (122) to pass through; the inner wall of the nail magazine cover (14) and the outer wall of the nail magazine clamp the fixed end of the spring structure.

20. A stapler, characterized in that: Comprising the nail magazine assembly as described in any one of claims 10 to 19.

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