Anastomat

Abstract

The utility model provides an anastomat which belongs to the technical field of medical instruments and comprises a nail bin seat, a nail bin, a nail abutting seat and a guide head, an insertion cavity is arranged at the front end of the nail abutting seat, the guide head is inserted in the insertion cavity, disassembly and assembly are convenient, the nail bin is installed on the nail bin seat through a first clamping structure, and the nail bin can be inserted into a first clamping groove only by pressing a first boss into the first clamping groove. Therefore, the guide head and the nail bin can be conveniently mounted and dismounted at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and in particular relates to an anastomosis device. Background Art

[0002] A stapler is simply a medical device similar to a stapler, such as the gastrointestinal stapler commonly used in the gastrointestinal tract. The stomach and intestines are directly stapled with the stapler to achieve the purpose of cutting and suturing. The main working principle is to use titanium staples and a cutting knife to staple and sever tissues. The laparoscopic stapler mainly includes a body and a staple magazine assembly. The staple magazine assembly is detachably arranged at the front end of the straight tube of the body, including a staple anvil and a staple magazine seat. The 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. At present, in the relevant existing technologies, the guide head at the front end of the staple anvil and the staple magazine on the staple magazine seat are both inconvenient to disassemble. Utility Model Content

[0003] 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 stapler that can simultaneously realize the disassembly of the guide head and the staple cartridge, and the disassembly is convenient.

[0004] The stapler according to the first embodiment of the utility model comprises:

[0005] The nail magazine seat is provided with a U-shaped mounting groove, and the upper end and the front end of the mounting groove are opened;

[0006] A nail magazine, detachably connected to the mounting slot;

[0007] A nail anvil is rotatably connected to the nail magazine seat and can be opened and closed relative to the nail magazine seat. The front end of the nail anvil is provided with an insertion cavity;

[0008] A guide head, inserted into the insertion cavity;

[0009] In which, the nail magazine is connected to the nail magazine seat through a first clamping structure, the first clamping structure includes a first clamping slot arranged on two opposite side walls of the mounting slot and a first boss arranged on two opposite side walls of the nail magazine, the first clamping slot includes an opening slot section and a clamping slot section, the clamping 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 clamping slot section.

[0010] The stapler according to the embodiment of the utility model has at least the following beneficial effects: the stapler in the utility model has an insert cavity provided at the front end of the nail support seat, and the guide head is inserted in the insert cavity, which is convenient for assembly and disassembly, and the nail magazine is installed on the nail magazine seat through the first clamping structure, and the installation of the nail magazine can be achieved by only pressing the first boss into the first clamping groove. Therefore, the convenient installation and disassembly of the guide head and the nail magazine can be achieved at the same time.

[0011] According to some embodiments of the utility model, a plug-in portion is provided at the rear end of the guide head, the thickness of the plug-in portion decreases from front to rear, and the maximum thickness of the plug-in portion is greater than the height of the plug-in cavity along the vertical direction.

[0012] According to some embodiments of the utility model, clamping parts are provided on both sides of the plug-in part, the rear ends of the clamping parts are connected to the plug-in part, and the front ends of the clamping parts are opened outwardly relative to the plug-in part.

[0013] According to some embodiments of the utility model, the side walls of the plug-in cavity include a first side wall and a second side wall along the direction from front to back, and the distance between the first side walls on both sides increases and the distance between the second side walls on both sides decreases along the direction from front to back, and the clamping portion abuts against the first side wall and / or the second side wall.

[0014] According to some embodiments of the present invention, the inclination angle of the first side wall relative to the front-rear direction is less than 30°.

[0015] According to some embodiments of the present invention, a second clamping structure is further provided between the nail magazine and the nail magazine seat, and the second clamping structure is used to limit the movement of the nail magazine relative to the mounting groove along the front-rear direction.

[0016] 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.

[0017] According to some embodiments of the present utility model, a third clamping structure is further provided between the nail magazine and the nail magazine seat, and the third clamping structure is used to limit the movement of the nail magazine relative to the mounting groove along the left-right direction.

[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] 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

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 A schematic diagram of the structure of the nail support and the nail magazine in the utility model;

[0023] Figure 2 A structural schematic diagram of an anvil;

[0024] Figure 3 A schematic diagram of the installation of the guide head;

[0025] Figure 4 This is a schematic diagram of an installation of a nail magazine and a nail magazine seat in the utility model;

[0026] Figure 5 This is a schematic diagram of a split nail magazine and a nail magazine seat in the utility model;

[0027] Figure 6 This is a structural schematic diagram of a nail magazine in the utility model;

[0028] Figure 7 for Figure 6 A magnified schematic diagram of the middle A area;

[0029] Figure 8 for Figure 6 A magnified schematic diagram of the middle B area;

[0030] Fig. 9 A structural schematic diagram of a nail magazine seat. DETAILED DESCRIPTION

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] A stapler is simply a medical device similar to a stapler, such as the gastrointestinal stapler commonly used in the gastrointestinal tract. The stomach and intestines are directly stapled with the stapler to achieve the purpose of cutting and suturing. The main working principle is to use titanium staples and a cutting knife to staple and sever tissues. The laparoscopic stapler mainly includes a body and a staple magazine assembly. The staple magazine assembly is detachably arranged at the front end of the straight tube of the body, including a staple anvil and a staple magazine seat. The 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. At present, in the relevant existing technologies, the guide head at the front end of the staple anvil and the staple magazine on the staple magazine seat are both inconvenient to disassemble.

[0036] To this end, the utility model provides a stapler that can simultaneously realize the disassembly of the guide head and the staple cartridge, and the disassembly is convenient.

[0037] Reference Figures 1 to 9As shown, a stapler of an embodiment of the utility model includes a stapler body and a staple magazine assembly installed at the front end of the stapler body, wherein the staple magazine assembly includes a staple magazine seat 200, a staple magazine 100 and a staple anvil 300. The staple magazine seat 200 is provided with a U-shaped mounting groove, and the upper end and the front end of the mounting groove are opened. The staple magazine 100 is detachably connected to the mounting groove. The staple anvil 300 is rotatably connected to the top of the staple magazine seat 200, and can be opened and closed relative to the staple magazine seat 200. The front end of the staple anvil 300 is provided with an insertion cavity 3001, and a guide head 301 is inserted through the insertion cavity 3001. Among them, the nail magazine 100 is connected to the nail magazine seat 200 through a first clamping structure, the first clamping structure includes a first clamping slot 201 provided on two opposite side walls of the mounting slot and a first boss 101 provided on two opposite side walls of the nail magazine 100, the first clamping slot 201 includes an opening slot section 2011 and a clamping slot section 2012, the clamping slot section 2012 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 101 matches the width of the clamping slot section 2012.

[0038] It can be understood that the stapler in the present invention is provided with an insertion cavity 3001 at the front end of the nail support seat 300, and the guide head 301 is inserted in the insertion cavity 3001, which is convenient for disassembly and assembly, and the nail magazine is installed on the nail magazine seat through the first clamping structure. The installation of the nail magazine can be achieved by only pressing the first boss into the first clamping groove 201. Therefore, the convenient installation and disassembly of the guide head 301 and the nail magazine can be achieved at the same time.

[0039] Reference Figure 3 In some embodiments of the present utility model, a plug-in portion 3011 is provided at the rear end of the guide head 301, and the thickness of the plug-in portion 3011 decreases from the front to the rear, and the maximum thickness of the plug-in portion 3011 is greater than the height of the plug-in cavity 3001 along the vertical direction. In this way, the thickness of the rear end of the plug-in portion 3011 is less than the height of the plug-in cavity 3001, which facilitates quick alignment and insertion into the plug-in cavity 3001. During the insertion process, as the thickness of the plug-in portion 3011 increases, it will be interference-fitted with the plug-in cavity 3001, thereby being fixed. The material of the plug-in portion 3011 can be flexibly set according to actual needs, such as using silicone material or plastic material that meets medical requirements.

[0040] Reference Figure 3In some embodiments of the present invention, a clamping part 3012 is provided on both sides of the plug-in part 3011, the rear end of the clamping part 3012 is connected to the plug-in part 3011, and the front end of the clamping part 3012 is opened outward relative to the plug-in part 3011. In this embodiment, by providing the clamping parts 3012 on both sides of the plug-in part 3011, the clamping parts 3012 are used to abut against the side wall of the plug-in cavity 3001, or to achieve a clamping connection with the side wall of the plug-in cavity 3001, so as to improve the stability of the guide head 301 when it is installed on the front end of the anvil seat 300.

[0041] Specifically, refer to Figure 3 The side walls of the insertion cavity 3001 include a first side wall 3002 and a second side wall 3003 along the direction from front to back. Along the direction from front to back, the distance between the first side walls 3002 on both sides increases, and the distance between the second side walls 3003 on both sides decreases, and the clamping portion 3012 abuts against the first side wall 3002 and / or the second side wall 3003. It can be understood that in this embodiment, a concave structure that opens outwards is formed between the first side wall 3002 and the second side wall 3003. When the guide head 301 is installed at the front end of the anvil seat 300, the clamping portion 3012 can be set to have its end accommodated in the concave formed between the first side wall 3002 and the second side wall 3003 to achieve anti-retraction clamping, or it can be set to abut against the first side wall 3002 or the second side wall 3003 to perform abutment limiting. It is understandable that the clamping portion 3012 may abut against the first side wall 3002 and the second side wall 3003 at the same time to achieve forward and backward movement limitation.

[0042] Since the guide head 301 needs to be disassembled, in order to facilitate removal, in some embodiments of the present invention, the first side wall 3002 has an inclination angle of less than 30° relative to the front-rear direction, so as to avoid vertical jamming when the end of the clamping portion 3012 abuts against the first side wall 3002.

[0043] In some embodiments of the utility model, a second clamping structure and a third clamping structure are further provided between the nail magazine and the nail magazine seat, the second clamping structure is used to limit the movement of the nail magazine relative to the mounting groove along the front-to-back direction, and the third clamping structure is used to limit the movement of the nail magazine relative to the mounting groove along the left-to-right direction.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Reference Figure 7 and Fig. 9 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.

[0048] 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.

[0049] The spring piece 202 may also be independently mounted on the nail magazine seat 200 .

[0050] Reference Figure 8 and Fig. 9 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] In summary, the stapler in the utility model 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 staple cartridge 100 relative to the staple cartridge seat 200, and will not hinder the removal of the staple cartridge 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.

[0055] 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 stapler, characterized in that: include: The nail magazine seat is provided with a U-shaped mounting groove, and the upper end and the front end of the mounting groove are opened; A nail magazine, detachably connected to the mounting slot; A nail anvil is rotatably connected to the nail magazine seat and can be opened and closed relative to the nail magazine seat. The front end of the nail anvil is provided with an insertion cavity; A guide head, inserted into the insertion cavity; In which, the nail magazine is connected to the nail magazine seat through a first clamping structure, the first clamping structure includes a first clamping slot arranged on two opposite side walls of the mounting slot and a first boss arranged on two opposite side walls of the nail magazine, the first clamping slot includes an opening slot section and a clamping slot section, the clamping 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 clamping slot section.

2. The stapler according to claim 1, characterized in that: A plug-in portion is disposed at the rear end of the guide head, the thickness of the plug-in portion decreases from the front to the rear, and the maximum thickness of the plug-in portion is greater than the height of the plug-in cavity along the vertical direction.

3. The stapler according to claim 2, characterized in that: Clamping parts are arranged on both sides of the plug-in part, the rear end of the clamping part is connected to the plug-in part, and the front end of the clamping part is opened outward relative to the plug-in part.

4. The stapler according to claim 3, characterized in that: The side walls of the plug-in cavity include a first side wall and a second side wall along the direction from front to back. Along the direction from front to back, the distance between the first side walls on both sides increases, and the distance between the second side walls on both sides decreases, and the clamping portion abuts against the first side wall and / or the second side wall.

5. The stapler according to claim 4, characterized in that: The inclination angle of the first side wall relative to the front-rear direction is less than 30°.

6. The stapler according to claim 1, characterized in that: A second clamping structure is further provided between the nail magazine and the nail magazine seat, and the second clamping structure is used to limit the movement of the nail magazine relative to the mounting groove along the front-rear direction.

7. The stapler according to claim 6, 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.

8. The stapler according to claim 1, characterized in that: A third clamping structure is further provided between the nail magazine and the nail magazine seat, and the third clamping structure is used to limit the movement of the nail magazine relative to the mounting groove along the left-right direction.

9. The stapler according to claim 8, 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.

10. The stapler according to claim 9, 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.

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