Nail bin assembly

Abstract

The utility model provides a nail bin assembly, which belongs to the technical field of anastomats and comprises a nail bin seat, a nail bin, a first clamping structure, a second clamping structure and a third clamping structure, and the first clamping structure, the second clamping structure and the third clamping structure are arranged between the nail bin seat and the nail bin. The first clamping structure, the second clamping structure and the third clamping structure are used for limiting up-down, front-back and left-right movement of the nail bin relative to the nail bin base, and the installation stability of the nail bin on the nail bin base can be effectively guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of staplers, and in particular relates to a staple cartridge assembly. Background Art

[0002] Staplers are simply medical devices similar to staplers, such as the gastrointestinal stapler commonly used in the gastrointestinal tract. The stomach and intestines are directly stapled to achieve the purpose of cutting and suturing. After cutting, the nails inside are pulled to staple the two wounds together to form an interconnected anastomosis, so this is called a stapler. Staplers are divided into many types according to their uses and parts of use. Laparoscopic cutting staplers are staplers that sew up stumps or incisions. Laparoscopic cutting staplers generally have 6 rows of staples. While stapling, the blade cuts the tissue from the middle, and 3 rows of staples on each side complete the suturing, hemostasis and other functions to achieve the purpose of cutting and suturing. It is suitable for various thoracoscopic and laparoscopic surgeries, convenient surgical operations, and maximizes the safety of laparoscopic surgical operations.

[0003] The laparoscopic stapler mainly includes a device body and a staple magazine assembly. The staple magazine assembly is detachably arranged at the front end of the straight tube of the device body, including a staple anvil and a staple magazine seat. The device body controls the opening and closing adjustment of the staple magazine seat and the staple anvil, and controls the removal of staples from the staple magazine on the staple magazine seat. During an operation, the preset number of suture staples on the staple magazine seat may not meet the use requirements, so the staple magazine assembly needs to be replaced. In order to save costs, a structure that can be disassembled and replaced relative to the staple magazine seat is proposed in the related prior art, but the structure in the prior art is difficult to take into account both the convenience of disassembly of the staple magazine and the stability of installation on the staple magazine seat. Utility Model Content

[0004] The utility model aims to solve at least one of the above-mentioned technical problems existing in the prior art. To this end, the utility model provides a nail magazine assembly, which can realize the disassembly of the nail magazine and ensure the stability of the nail magazine installed on the nail magazine seat.

[0005] According to the first embodiment of the present invention, the staple cartridge assembly includes:

[0006] The nail magazine seat is provided with a U-shaped mounting groove;

[0007] A nail magazine, detachably connected to the mounting slot;

[0008] A first clamping structure is provided between two opposite side walls of the mounting slot and the nail magazine, and is used to limit the movement of the nail magazine outward relative to the mounting slot in the up-down direction;

[0009] A second clamping structure is provided between the mounting slot and the nail magazine, and is used to limit the movement of the nail magazine relative to the mounting slot in the front-rear direction;

[0010] The third clamping structure is disposed between the mounting slot and the nail magazine, and is used to limit the movement of the nail magazine relative to the mounting slot along the left-right direction.

[0011] The nail magazine assembly according to the embodiment of the utility model has at least the following beneficial effects: the nail magazine assembly in the utility model limits the up and down, front and back, left and right movement of the nail magazine relative to the nail magazine seat through the first clamping structure, the second clamping structure and the third clamping structure, which can effectively ensure the installation stability of the nail magazine on the nail magazine seat.

[0012] According to some embodiments of the present utility model, the first clamping structure includes a first clamping groove provided on two opposite side walls of the installation groove and a first boss provided on two opposite side walls of the nail magazine, wherein:

[0013] The first slot includes an opening slot section and a snap-in slot section, the snap-in slot section is connected to the front end of the bottom of the opening slot section and extends toward the front end of the nail magazine seat along the front-to-back direction, and the height of the first boss matches the width of the snap-in slot section.

[0014] According to some embodiments of the present invention, the vertical cross-section of the first boss is circular, and the vertical cross-section size of the first boss decreases in a direction away from the nail magazine.

[0015] According to some embodiments of the utility model, the nail magazine assembly also includes a nail magazine cover, which is covered on the upper end surface of the nail magazine, and the left and right sides of the nail magazine cover are provided with edges that are clamped with the first boss, and the lower ends of the edges are tapered so that the lower ends of the edges on both sides are in an open structure.

[0016] According to some embodiments of the present invention, a head is provided at the front end of the nail magazine, the head is located outside the mounting groove, and the head protrudes forward relative to the nail magazine cover.

[0017] According to some embodiments of the utility model, the second clamping structure includes a spring sheet arranged at the bottom of the mounting groove and a second boss arranged at the bottom of the nail magazine, the spring sheet can be elastically deformed up and down, and the spring sheet has an elastic protrusion protruding upward along the left and right directions, and there are two second bosses, the two second bosses are distributed along the front and back directions, and the second bosses extend along the left and right directions, and the elastic protrusion is matched between the two second bosses.

[0018] According to some embodiments of the utility model, the third clamping structure includes a cantilever arranged at the bottom of the mounting groove and a third boss arranged at the bottom of the nail magazine, the third boss and the cantilever are staggered in the left and right directions, the side wall of the third boss close to the cantilever is an inclined surface, and the horizontal projection of the cantilever at least partially falls within the horizontal projection of the inclined surface.

[0019] According to some embodiments of the utility model, a clearance opening is provided at the bottom of the installation groove, the cantilever is connected to a side wall of the clearance opening and extends in the front-to-back direction, the third boss is mounted in the clearance opening and abuts against the cantilever through the inclined surface.

[0020] According to some embodiments of the utility model, the third clamping structure is provided with two third bosses along the left-right direction, and the two third bosses are provided with the inclined surfaces on two side walls which are away from or facing each other.

[0021] According to some embodiments of the present invention, the nail magazine assembly further includes a nail anvil, and the nail anvil is capable of rotating relative to the nail magazine seat.

[0022] Additional aspects and advantages of the present invention will be partially given in the following description, and some of the additional aspects and advantages will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a schematic diagram of an installation of a nail magazine and a nail magazine seat in the utility model;

[0025] Figure 2 This is a schematic diagram of a split nail magazine and a nail magazine seat in the utility model;

[0026] Figure 3 This is a structural schematic diagram of a nail magazine in the utility model;

[0027] Figure 4 for Figure 3 A magnified schematic diagram of the middle A area;

[0028] Figure 5 for Figure 3 A magnified schematic diagram of the middle B area;

[0029] Figure 6 A structural schematic diagram of a nail magazine seat. DETAILED DESCRIPTION

[0030] The embodiments of the present invention 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 invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention.

[0032] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] Staplers are simply medical devices similar to staplers, such as the gastrointestinal stapler commonly used in the gastrointestinal tract. The stomach and intestines are directly stapled to achieve the purpose of cutting and suturing. After cutting, the nails inside are pulled to staple the two wounds together to form an interconnected anastomosis, so this is called a stapler. Staplers are divided into many types according to their uses and parts of use. Laparoscopic cutting staplers are staplers that sew up stumps or incisions. Laparoscopic cutting staplers generally have 6 rows of staples. While stapling, the blade cuts the tissue from the middle, and 3 rows of staples on each side complete the suturing, hemostasis and other functions to achieve the purpose of cutting and suturing. It is suitable for various thoracoscopic and laparoscopic surgeries, convenient surgical operations, and maximizes the safety of laparoscopic surgical operations.

[0035] The laparoscopic stapler mainly includes a device body and a staple magazine assembly. The staple magazine assembly is detachably arranged at the front end of the straight tube of the device body, including a staple anvil and a staple magazine seat. The device body controls the opening and closing adjustment of the staple magazine seat and the staple anvil, and controls the removal of staples from the staple magazine on the staple magazine seat. During an operation, the preset number of suture staples on the staple magazine seat may not meet the use requirements, so the staple magazine assembly needs to be replaced. In order to save costs, a structure that can be disassembled and replaced relative to the staple magazine seat is proposed in the related prior art, but the structure in the prior art is difficult to take into account both the convenience of disassembly of the staple magazine and the stability of installation on the staple magazine seat.

[0036] To this end, the utility model provides a nail magazine assembly, which can realize the disassembly of the nail magazine and at the same time ensure the stability of the nail magazine installed on the nail magazine seat.

[0037] Reference Figures 1 to 6 As shown, a nail magazine assembly of an embodiment of the present invention includes a nail magazine seat 200 and a nail magazine 100. The nail magazine seat 200 is provided with a U-shaped mounting groove. Figure 6 , the upper end and the front end of the mounting groove are open. The nail magazine 100 is detachably connected to the mounting groove. A first clamping structure is provided between the nail magazine 100 and the nail magazine seat 200. The first clamping structure is provided between the two opposite side walls of the mounting groove and the nail magazine 100, and is used to limit the outward movement of the nail magazine 100 relative to the mounting groove in the up-down direction. In this way, after the nail magazine 100 is installed in the mounting groove, the nail magazine 100 can be prevented from slipping out of the mounting groove upward, and the nail magazine 100 can also be prevented from shaking up and down relative to the nail magazine seat 200. A second clamping structure is also provided between the mounting groove and the nail magazine 100, and the second clamping structure is used to limit the movement of the nail magazine 100 relative to the mounting groove in the front-back direction. In this way, after the nail magazine 100 is installed in the mounting groove, the nail magazine 100 can be prevented from slipping out of the mounting groove forward, and the nail magazine 100 can also be prevented from shaking back and forth relative to the nail magazine seat 200. A third clamping structure is further provided between the mounting groove and the nail magazine 100, and the third clamping structure is used to limit the movement of the nail magazine 100 relative to the mounting groove in the left and right directions. In this way, after the nail magazine 100 is installed in the mounting groove, the nail magazine 100 can be prevented from shaking left and right relative to the nail magazine seat 200.

[0038] To sum up, the nail magazine assembly in the present invention limits the up and down, front and back, left and right movement of the nail magazine 100 relative to the nail magazine seat 200 through the first clamping structure, the second clamping structure and the third clamping structure, which can effectively ensure the installation stability of the nail magazine 100 on the nail magazine seat 200.

[0039] Reference Figure 1 , Figure 4 and Figure 6In some embodiments of the utility model, the first clamping structure includes a first clamping groove 201 provided on two opposite side walls of the installation groove and a first boss 101 provided on two opposite side walls of the nail magazine 100. Along the front-to-back direction, a plurality of first clamping grooves 201 are provided on the left and right side walls of the installation groove, and matchingly, a plurality of first bosses 101 are also provided on the left and right side walls of the nail magazine 100 along the front-to-back direction, so that the first bosses 101 are clamped into the first clamping grooves 201 to achieve upper and lower limit. Among them, the first clamping groove 201 includes an opening groove section 2011 and a clamping groove section 2012, and the clamping groove section 2012 is connected to the front end of the bottom of the opening groove section and extends toward the front end of the nail magazine seat 200 along the front-to-back direction. The height of the first boss 101 matches the width of the clamping groove section 2012. During installation, first align the first boss 101 of the nail magazine 100 with the opening slot section 2011 and place it into the installation slot. At this time, the first boss 101 fits into the opening slot section 2011, and then push the nail magazine 100 forward so that the first boss 101 is inserted into the snap-in slot section 2012. The upper and lower side walls of the first boss 101 abut against the side walls of the snap-in slot section 2012 to achieve upper and lower limit snap-in.

[0040] Reference Figure 4 In some embodiments of the present invention, the vertical cross section of the first boss 101 is circular, and the vertical cross section of the first boss 101 decreases in the direction away from the nail magazine 100. In this way, the first boss 101 is a truncated cone structure with a certain taper. The circular profile of the truncated cone can be used to improve the smoothness of pushing into the clamping groove section 2012. At the same time, the taper of the first boss 101 can be used to achieve an interference fit with the clamping groove section 2012, thereby improving the stability of the upper and lower limit positions.

[0041] In some embodiments of the present invention, the nail magazine assembly further includes a nail magazine cover (not shown in the figure), the nail magazine cover is covered on the upper end surface of the nail magazine 100, and the left and right sides of the nail magazine cover are provided with edges for clamping the first boss 101, and the lower ends of the edges are provided with a taper, so that the lower ends of the edges on both sides are in an open structure. Usually, the upper end surface of the nail magazine 100 is provided with an anti-slip protrusion, and the main part of the nail magazine cover abuts on the anti-slip protrusion, and the left and right sides are provided with round holes adapted to the first boss 101 on the edge to clamp the first boss 101, and the nail magazine cover is subjected to a certain upward force by the support of the anti-slip protrusion. The lower end of the edge forms an open structure, and only the nail magazine 100 needs to be placed in the installation slot, and the nail magazine cover can be pushed out by using the two side walls of the installation slot, thereby improving the convenience of use. In addition, since the first boss 101 is a tapered truncated cone structure, when the nail magazine cover is covered on the nail magazine 100, there is no gap for shaking up and down.

[0042] In some embodiments of the present invention, a head is provided at the front end of the nail magazine 100, the head is located outside the installation slot, and the head protrudes forward relative to the nail magazine cover. In this way, when the nail magazine 100 is placed in the installation slot, the front end of the nail magazine cover can be quickly pushed out by simply pressing down the head, thereby facilitating the rapid removal of the nail magazine cover.

[0043] Reference Figure 4 and Figure 6 In some embodiments of the utility model, the second clamping structure includes a spring piece 202 arranged at the bottom of the mounting groove and a second boss 103 arranged at the bottom of the nail magazine 100, the spring piece 202 can be elastically deformed up and down, and the spring piece 202 has an elastic protrusion 2021 protruding upward along the left and right directions, and the second boss 103 has two, the two second bosses 103 are distributed along the front and back directions, and the second boss 103 extends along the left and right directions, and the elastic protrusion 2021 matches between the two second bosses 103. It is understandable that when the nail magazine 100 is just placed in the installation slot and the first boss 101 is fitted into the open slot section 2011, the two second bosses 103 are both located at the rear end of the elastic protrusion 2021. When the nail magazine 100 is pushed forward until the first boss 101 is completely inserted into the clamping slot section 2012, the second boss 103 at the front end will pass over the elastic protrusion 2021 and move to the front end of the elastic protrusion 2021, so that the elastic protrusion 2021 is just inserted between the two second bosses 103. In this way, when the nail magazine 100 moves forward or backward relative to the nail magazine seat 200, it will be subject to the resistance exerted by the elastic protrusion 2021 on the second boss 103. The spring sheet 202 is preferably configured to be a structural form that is tilted upward under normal conditions, so that when the nail magazine 100 is fitted into the installation slot, the spring sheet 202 is pressed down.

[0044] Since the nail magazine seat 200 is made of metal, the spring piece 202 can be made by bending the nail magazine seat 200. The elastic protrusion 2021 is also made by bending.

[0045] The spring piece 202 may also be independently mounted on the nail magazine seat 200 .

[0046] Reference Figure 5 and Figure 6 In some embodiments of the present invention, the third clamping structure includes a cantilever 203 disposed at the bottom of the installation slot and a third boss 102 disposed at the bottom of the nail magazine 100. The third boss 102 and the cantilever 203 are staggered in the left-right direction. The side wall of the third boss 102 close to the cantilever 203 is an inclined surface, and the horizontal projection of the cantilever 203 at least partially falls within the horizontal projection of the inclined surface. In this way, when the nail magazine 100 is downwardly inserted into the installation slot, the side wall of the third boss 102 will abut against the cantilever 203, and the cantilever 203 is used to apply a force in the left-right direction to achieve a limiting effect.

[0047] Specifically, a clearance opening 2031 is provided at the bottom of the installation slot, and the cantilever 203 is connected to a side wall of the clearance opening 2031 and extends in the front-to-back direction. The third boss 102 is fitted in the clearance opening 2031 and abuts against the cantilever 203 through an inclined surface. Since the staple cartridge 100 needs to move forward relative to the staple cartridge seat 200 during the process of fitting the first clamping structure, the cantilever 203 is arranged in the front-to-back direction in this embodiment to avoid affecting the fitting of the first clamping structure during this process. The cantilever 203 can be integrally formed with the staple cartridge seat 200, or can be independently installed.

[0048] In some embodiments of the utility model, the third clamping structure is provided with two third bosses 102 along the left and right directions, and the two third bosses 102 are provided with inclined surfaces on two side walls which are away from or facing each other, so that the two third bosses 102 cooperate with the two cantilevers 203 to realize the leftward and rightward movement limitation.

[0049] It is understandable that inclined surfaces may be provided on the left and right side walls of the third boss 102 , and two cantilevers 203 may be provided at the bottom of the mounting groove corresponding to the two inclined surfaces of the third boss 102 for abutment and cooperation.

[0050] In addition, the staple cartridge assembly further comprises an anvil seat, which can rotate relative to the staple cartridge seat 200. The anvil seat is located above the staple cartridge seat 200 and is used to abut against the suture staples during operation.

[0051] In summary, the nail magazine assembly in the present invention can use the first clamping structure, the second clamping structure, and the third clamping structure to achieve up-down, left-right, front-back position limiting, ensure the stability of the nail magazine 100 relative to the nail magazine seat 200, and will not hinder the removal of the nail magazine 100. In addition, in combination with the above embodiments, it can be seen that the first clamping structure, the second clamping structure, and the third clamping structure complement each other and can promote their respective position limiting effects. For example, when the third boss 102 abuts the cantilever 203 through the inclined surface, the cantilever 203 not only exerts a position limiting effect on the third boss 102 in the left-right direction, but also has an upward thrust, which can increase the force between the first boss 101 and the clamping groove, and improve the upper and lower position limiting effect.

[0052] The present invention is described in detail above in conjunction with the embodiments, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A nail magazine assembly, characterized in that: include: The nail magazine seat is provided with a U-shaped mounting groove; A nail magazine, detachably connected to the mounting slot; A first clamping structure is provided between two opposite side walls of the mounting slot and the nail magazine, and is used to limit the movement of the nail magazine outward relative to the mounting slot in the up-down direction; A second clamping structure is provided between the mounting slot and the nail magazine, and is used to limit the movement of the nail magazine relative to the mounting slot in the front-rear direction; The third clamping structure is disposed between the mounting slot and the nail magazine, and is used to limit the movement of the nail magazine relative to the mounting slot along the left-right direction.

2. The staple cartridge assembly according to claim 1, characterized in that: The first clamping structure includes a first clamping groove provided on two opposite side walls of the mounting groove and a first boss provided on two opposite side walls of the nail magazine, wherein: The first slot includes an opening slot section and a snap-in slot section, the snap-in slot section is connected to the front end of the bottom of the opening slot section and extends toward the front end of the nail magazine seat along the front-to-back direction, and the height of the first boss matches the width of the snap-in slot section.

3. The staple cartridge assembly according to claim 2, characterized in that: The vertical cross-section of the first boss is circular, and the vertical cross-section size of the first boss decreases in a direction away from the nail magazine.

4. The staple cartridge assembly according to claim 2, characterized in that: The nail magazine assembly also includes a nail magazine cover, which covers the upper end surface of the nail magazine. The left and right sides of the nail magazine cover are provided with edges that are clamped with the first boss, and the lower ends of the edges are tapered so that the lower ends of the edges on both sides are in an open structure.

5. The staple cartridge assembly according to claim 4, characterized in that: A head is provided at the front end of the nail magazine, the head is located outside the mounting groove, and the head protrudes forward relative to the nail magazine cover.

6. The staple cartridge assembly according to claim 1, characterized in that: The second clamping structure includes a spring sheet arranged at the bottom of the mounting groove and a second boss arranged at the bottom of the nail magazine, the spring sheet can be elastically deformed up and down, and the spring sheet has an elastic protrusion protruding upward along the left and right directions, and there are two second bosses, the two second bosses are distributed along the front and back directions, and the second bosses extend along the left and right directions, and the elastic protrusion is matched between the two second bosses.

7. The staple cartridge assembly according to claim 1, characterized in that: The third clamping structure includes a cantilever arranged at the bottom of the mounting groove and a third boss arranged at the bottom of the nail magazine, the third boss and the cantilever are staggered in the left-right direction, the side wall of the third boss close to the cantilever is an inclined surface, and the horizontal projection of the cantilever at least partially falls within the horizontal projection of the inclined surface.

8. The staple cartridge assembly according to claim 7, characterized in that: The bottom of the installation groove is provided with a clearance opening, the cantilever is connected to a side wall of the clearance opening and extends along the front-rear direction, the third boss is fitted in the clearance opening and abuts against the cantilever through the inclined surface.

9. The staple cartridge assembly according to claim 7, characterized in that: Along the left-right direction, the third clamping structure is provided with two third bosses, and the two third bosses are provided with the inclined surfaces on two side walls which are away from or facing each other.

10. The staple cartridge assembly according to claim 1, characterized in that: The nail magazine assembly also includes a nail anvil, which can rotate relative to the nail magazine seat.

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