Nail bin assembly and anastomat

Abstract

The utility model provides a nail bin assembly and an anastomat, and relates to the technical field of surgical instruments. The nail bin assembly comprises a nail bin and an elastic limiting unit, a mounting hole is formed in the nail bin, and the elastic limiting unit is mounted at the mounting hole; the elastic limiting unit comprises an elastic force transmission structure and a triggering part and a limiting part which are located at the two ends of the elastic force transmission structure, the triggering part and the limiting part are arranged close to the inner end and the outer end of the mounting hole respectively, the triggering part is used for being arranged on the movement path of the nail pushing piece in the nail pushing direction, and the limiting part is arranged corresponding to a set area of the outer surface of the nail bin; the set area is an area opposite to the nail bin seat on the outer surface of the nail bin. According to the utility model, under some circumstances, the difficulty that the nail bin assembly with at least part of the cocked anastomosis nails is mounted in the nail bin seat is greatly increased, so that the mistaken mounting of the nail bin assembly with at least part of the cocked anastomosis nails can be prevented to a certain extent, and the safety performance of the anastomat is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical instruments, and in particular to a stapler assembly and a stapler. Background Art

[0002] The stapler is a medical device commonly used for tissue anastomosis and suturing in surgical operations. It includes components such as a staple cartridge seat, a staple cartridge assembly, and an anvil seat. The staple cartridge assembly is usually detachably connected to the staple cartridge seat, for example, installed in a groove-shaped structure of the staple cartridge seat. During surgery, a pushing structure such as a cutting knife pushes the staple pusher to move, and the staple pusher is fired by the staple pusher. The fired staple contacts the anvil forming groove on the anvil seat and deforms, for example, into a B shape, thereby completing the anastomosis operation.

[0003] It has been observed that there is a risk that the staples in the staple magazine assembly may be fired and reloaded into the staple magazine seat, which may delay medical progress at the least and cause medical accidents at the worst. Utility Model Content

[0004] The utility model aims to solve the problem of how to reduce the possibility of mis-installation of nail magazine components in the related art to a certain extent.

[0005] In order to solve at least one aspect of the above-mentioned problems to at least a certain extent, in a first aspect, the utility model provides a nail magazine assembly, including a nail magazine and an elastic limiting unit, wherein a mounting hole is provided on the nail magazine, 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 used to be arranged on the movement path of the nail pushing part along its nail pushing direction, and the limiting part is arranged corresponding to a set area of ​​the outer surface of the nail magazine, and the set area is the area of ​​the outer surface of the nail magazine that is opposite to the nail magazine seat.

[0006] Optionally, the nail magazine is provided with the trigger portion corresponding to the end limit position of the nail pushing member moving along its nail pushing direction.

[0007] Optionally, the elastic limiting unit is a spring structure, a fixed end of the spring structure is fixedly arranged at the mounting hole, and the elastic force transmission structure, the trigger part and the limiting part are all formed on the spring structure.

[0008] Optionally, 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 is fixedly connected to the nail magazine on one circumferential side of the mounting hole to form a fixed end of the spring sheet structure, 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, and the third section is used to form the elastic force transmission structure.

[0009] Optionally, the first section is connected to an inserting section, a slot is provided on the nail magazine, and the inserting section is inserted into the slot.

[0010] Optionally, a first groove-shaped structure is provided on the nail magazine seat, and the nail magazine assembly is used to be placed in the first groove-shaped structure along a set direction, and the first section, the second section and the third section are connected in sequence along the set direction.

[0011] Optionally, the nail magazine assembly also includes a nail magazine cover, which is detachably connected to the nail magazine, and the nail magazine assembly is connected to the nail magazine seat through the nail magazine cover. The nail magazine cover is provided with a through hole, which is connected to the mounting hole, and the through hole is used for the passage of the limiting portion.

[0012] Optionally, the nail magazine assembly also includes a nail magazine cover, which is detachably connected to the nail magazine, and the nail magazine assembly is connected to the nail magazine seat through the nail magazine cover. The nail magazine cover is provided with a through hole, which is connected to the mounting hole and is used for the passage of the limiting portion. The nail magazine cover presses the fixed end of the spring structure against the end face of the outer end of the mounting hole.

[0013] Optionally, the first side walls on both sides of the nail magazine along the width direction are provided with the mounting holes;

[0014] And / or, the trigger part and the limiting part are both configured as sliding parts, and the sliding parts are slidably installed on the nail magazine along the depth direction of the mounting hole, and the elastic force transmission structure is located in the mounting hole, and the two ends of the elastic force transmission structure are respectively abutted against the two sliding parts.

[0015] In a second aspect, the utility model provides a stapler, which includes the staple cartridge assembly as described in the first aspect above.

[0016] Compared with the related prior art, in the nail magazine assembly and the stapler of the utility model, a mounting hole is provided on the nail magazine, and the elastic limiting unit is installed at the mounting hole to realize the installation of the elastic limiting unit in the nail magazine. 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. When the nail magazine assembly is installed on the nail magazine seat of the stapler, since the limiting part is arranged corresponding to a set area of ​​the outer surface of the nail magazine, the set area is an area of ​​the outer surface of the nail magazine that is opposite to the nail magazine seat, for example, it is arranged opposite to the inner wall of the first groove structure on the nail magazine seat for installing the nail magazine assembly. When the nail pushing member moves along its nail pushing direction, for example, from back to front and contacts with the trigger part, at least part of the staples in the nail magazine are fired, and the trigger part is driven toward the nail by the interaction with the nail pushing member. When the staple cartridge assembly is removed from the staple cartridge seat, the abutment effect of the staple cartridge seat on the limiting portion will be released, and under the action of the potential energy of the elastic force transmission structure, the limiting portion will move to the outside of the staple cartridge, thereby making the size of the staple cartridge assembly at the limiting portion larger, thereby substantially forming a stopper. Specifically, a blockage is formed when the staple cartridge assembly is loaded into the staple cartridge seat again in this state. That is to say, the difficulty of loading the staple cartridge assembly with at least some of the staples fired into the staple cartridge seat will be greatly increased, thereby preventing the misinstallation of the staple cartridge assembly with at least some of the staples fired to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an exploded schematic diagram of a nail magazine assembly in an embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure after the upper half of the nail magazine in the nail magazine assembly in the embodiment of the utility model is cut away to expose the elastic limiting unit;

[0019] Figure 3 It is a schematic diagram of a three-dimensional structure in which a staple cartridge assembly is installed in a first groove-shaped structure of a stapler staple cartridge seat in an embodiment of the utility model;

[0020] Figure 4 For Figure 3 A corresponding schematic structural diagram of the stapler from another viewing angle;

[0021] Figure 5 It is a schematic diagram of the explosion of the stapler when the staple pusher is about to contact the triggering part of the elastic limiting unit in the embodiment of the present utility model.

[0022] Description of reference numerals:

[0023] 1-nail magazine assembly; 11-nail magazine; 111-mounting hole; 112-first side wall; 113-slot; 12-elastic limiting unit; 121-trigger part; 122-limiting part; 123-elastic force transmission structure; 12a-first section; 12b-second section; 12c-third section; 12d-plug-in section; 13-nail pusher; 14-nail magazine cover; 141-through hole; 2-nail magazine seat; 21-first groove structure; 3-nail support seat. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment", "some embodiments", "exemplarily" and "one embodiment" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiment are included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or embodiments in a suitable manner.

[0027] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0028] 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; the X axis in the accompanying drawings 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; the Y axis in the accompanying drawings 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 invention 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 to the present invention.

[0029] like Figures 1 to 5 As shown, the utility model provides a nail magazine assembly 1, including a nail magazine 11 and an elastic limiting unit 12, the nail magazine 11 is provided with a mounting hole 111, 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 used to be arranged on the movement path of the nail pushing member 13 along its nail pushing direction, and the limiting part 122 is arranged corresponding to the 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.

[0030] In this specification, the stapler assembly 1 is used in a stapler, and the stapler includes a stapler seat 2 and an anvil seat 3 located at the front end, and the anvil seat 3 and the stapler seat 2 can move relative to each other to open and close.

[0031] The staple cartridge assembly 1 is installed in the staple cartridge seat 2. For example, the staple cartridge seat 2 is formed with a first groove-shaped structure 21. The staple cartridge assembly 1 is installed in the first groove-shaped structure. At least the top end of the staple cartridge assembly 1 is exposed outside the first groove-shaped structure 21, so that subsequent staples can be pushed out from the top end of the staple cartridge assembly 1 and contact the staple support seat 3. The set area of ​​the outer surface of the staple cartridge 11 can be simply understood as the area opposite to the inner wall of the first groove-shaped structure 21.

[0032] The staple pushing direction of the staple pushing member 13 is from back to front. Specifically, when the stapler is extended to the preset position and the staple support 3 and the staple magazine support 2 are closed to compress the tissue to be sutured, under the action of, for example, a cutting knife, the staple pushing member 13 moves from back to front, driving the staples to be fired in sequence from back to front, for example, firing upward, and the fired staples hit the first forming groove on the staple support 3, so that the staples complete the suturing by deformation, for example, the staples are deformed into a B shape by contact with the first forming groove.

[0033] It should be noted that when the nail pushing member 13 is located at its initial extreme 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, the nail pushing member 13 is not in contact with the trigger portion 121, so that the trigger portion 121 is located on the movement path of the nail pushing member 13 along its nail pushing direction, and the nail pushing member 13 is not in contact with the trigger portion 121. 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 trigger portion 121. The limiting portion 122 usually does not contact the nail magazine seat 2, for example, does not contact the first groove structure 21 of the nail magazine seat 2, and the nail magazine assembly 1 can be relatively smoothly loaded into the first groove structure 21 of the nail magazine seat 2.

[0034] In this specification, the content of the utility model 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 along the width direction of the nail magazine 11. However, 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.

[0035] 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 (for example, the nail pushing direction is from back to front).

[0036] 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 first groove-shaped structure 21 on the nail magazine seat 2 for installing the nail magazine assembly 1.

[0037] The specific structure of the elastic limiting unit 12 is not limited. 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 mainly used to transmit the 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 and right directions, and the second one of the limiting part 122 and the trigger part 121 is compressed in the left and right directions, 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 and right directions, and the second one of the limiting part 122 and the trigger part 121 is compressed in the left and right directions, 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 and right directions.

[0038] In this way, a mounting hole 111 is provided on the staple cartridge 11, and the elastic limiting unit 12 is installed at the mounting hole 111 to realize the installation of the elastic limiting unit 12 on the staple cartridge 11. The elastic limiting unit 12 includes an elastic force transmission structure 123 and a trigger portion 121 and a limiting portion 122 located at both ends of the elastic force transmission structure 123. The trigger portion 121 and the limiting portion 122 are respectively arranged near the inner end and the outer end of the mounting hole 111. When the staple cartridge assembly 1 is installed on the staple cartridge seat 2 of the stapler, due to the limiting portion The portion 122 is arranged corresponding to a set area of ​​the outer surface of the staple cartridge 11, and the set area is an area of ​​the outer surface of the staple cartridge 11 that is used to be opposite to the staple cartridge seat 2, for example, it is arranged opposite to the inner wall of the first groove-shaped structure 21 on the staple cartridge seat 2 for mounting the staple cartridge assembly 1. 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 in the staple cartridge 11 are fired, and the trigger portion 121 is triggered by the interaction with the staple pusher 13 to the outside of the staple cartridge 11. The elastic force transmission structure 123 is acted upon by the trigger portion 121 to drive the limiting portion 122 to move toward the outside of the nail magazine 11, so that the limiting portion 122 abuts against the inner wall of the first 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 portion 122 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 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 fired from being misinstalled to a certain extent.

[0039] Optionally, the nail magazine 11 is provided with a trigger portion 121 corresponding to the end limit position of the nail pushing member 13 moving along its nail pushing direction.

[0040] The nail magazine assembly 1 of this embodiment includes only one elastic limiting unit 12, and the elastic limiting unit 12 includes only one trigger 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 example will be used to illustrate the utility model in the following.

[0041] 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 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.

[0042] It should be understood that the terminal limit position is that the nail pushing member 13 is located at the front end of the nail magazine 11. When the nail pushing member 13 is at the terminal limit position, all the staples in the nail magazine 11 are in a fired state, that is, the nail magazine 11 is in an empty state.

[0043] In this way, after the nail magazine assembly 1 is removed from the nail magazine seat 2, the limiting portion 122 of the elastic limiting unit 12 can be used to prevent the empty nail magazine assembly 1 from being misassembled, thereby avoiding assembling the empty nail magazine assembly 1 to the nail magazine seat 2 and causing adverse consequences.

[0044] Optionally, the nail magazine assembly 1 also includes a nail magazine cover 14, which is detachably connected to the nail magazine 11. The nail magazine assembly 1 is connected to the nail magazine seat 2 through the nail magazine cover 14. The nail magazine cover 14 is provided with a through hole 141, which is connected to the mounting hole 111. The through hole 141 is used for the passage of the limiting portion 122.

[0045] Specifically, the nail magazine cover 14 is detachably connected to the nail magazine 11, such as a snap-on connection, and the nail magazine assembly 1 is connected to the first 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 the utility model before the application date, which will not be described in detail here.

[0046] In this way, on the basis of protecting the bottom of the nail magazine 11 by the nail magazine cover 14, it is ensured that the limiting portion 122 can smoothly move to the outside of the nail magazine 11, for example, move in the left and right directions and abut against the inner wall of the first groove structure 21 of the nail magazine seat 2.

[0047] Optionally, the elastic limiting unit 12 is a spring structure, the fixed end of the spring structure is fixedly arranged at 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.

[0048] Specifically, the spring sheet structure can be formed by one spring sheet, or by connecting a plurality of spring sheets, which is not a limitation as long as it can meet the use requirements.

[0049] In this case, the elastic force transmission structure 123 , the triggering portion 121 and the limiting portion 122 are formed by the spring structure, and the elastic limiting unit 12 has a simple structure and high reliability.

[0050] like Figure 2 As shown, optionally, the spring 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 is fixedly connected to the nail magazine 11 on one circumferential side of the mounting hole 111 to form a fixed end of the spring structure. 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 third section 12c is used to form an elastic force transmission structure 123.

[0051] like Figure 2 As shown, exemplarily, the spring sheet structure is fitted with the nail magazine 11 in the first section 12a so that the fixed end of the spring sheet structure is fixed in the position of the nail magazine 11, the limiting portion 122 is arranged at one end of the third section 12c close to the outside of the mounting hole 111, the trigger 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 inclined relative to the first section 12a.

[0052] 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 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.

[0053] Optionally, the first section 12 a is connected to the inserting section 12 d , a slot 113 is provided on the nail magazine 11 , and the inserting section 12 d is inserted into the slot 113 .

[0054] Exemplarily, the first section 12 a is bent at one end away from the second section 12 b to form the plug-in portion, and the depth direction of the slot 113 may be consistent with the depth direction of the mounting hole 111 .

[0055] like Figure 1 , Figure 2 and Figure 5As shown, when the first section 12a is in contact with the nail magazine 11 at the outer end surface of the mounting hole 111, one 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.

[0056] In this way, the reliability of the connection between the fixed end of the spring structure and the nail magazine 11 can be improved through the plug-in connection between the plug-in section 12 d and the slot 113 .

[0057] It should be understood that one or more of the trigger portion 121 and the limiting portion 122 can be provided with a guide surface 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 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 scratching between the two, thereby improving the service life of the components and reducing the possibility of abnormal noise and debris generated by scratching.

[0058] In the above embodiment, a first groove structure 21 is provided on the nail magazine seat 2, and the nail magazine assembly 1 is used to be placed in the first groove structure 21 along a set direction, and the first section 12a, the second section 12b and the third section 12c are connected in sequence along the set direction.

[0059] The present invention is described by taking the setting direction from front to back as an example. Specifically, the staple cartridge assembly 1 is used to move from front to back and is placed into the first slot structure 21. The first section 12a, the second section 12b and the third section 12c are sequentially distributed from front to back. Figure 1 Taking the situation shown as an example, at this time, a limiting portion 122 is formed at the end of the third section 12c, and a trigger portion 121 is formed at the other end. When the nail magazine assembly 1 pushes the nail member 13 and the trigger portion 121 and the nail magazine assembly 1 and the nail magazine assembly 1 are in a disassembled state, if the nail magazine assembly 1 needs to be moved from front to back and pushed into the first groove structure 21, at this time, the limiting portion 122 at the end of the third section 12c exceeds the outer surface of the nail magazine assembly 1 in the left and right directions, for example, exceeds the outer surface of the nail magazine cover 14, and the front end surface of the first 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 due to the force, and at least has a tendency to expand outward in the initial stage, so that it is more difficult to move the nail magazine assembly 1 from front to back into the first groove structure 21, thereby having a better effect of preventing misinstallation.

[0060] 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 .

[0061] like Figure 2As shown, the inner surface of the nail magazine cover 14 along the left and 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 113, thereby ensuring the reliability of the connection between the spring structure and the nail magazine 11.

[0062] At this point, it should be understood that a receiving groove for receiving a spring structure, such as the first section 12 a , may be provided at the end surface of the outer end of the mounting hole 111 of the nail magazine 11 , which will not be described in detail here.

[0063] Optionally, along the direction in which the first section 12a, the second section 12b and the third section 12c are distributed sequentially, the inner surface of the mounting hole 111 can be set to a slope, and when necessary, it can contact the second section 12b or the third section 12c through the slope to limit its extreme position, which will not be described in detail here.

[0064] In the above embodiment, optionally, the first side walls 112 on both sides of the nail magazine 11 along the width direction are both provided with mounting holes 111 .

[0065] For example, the two mounting holes 111 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 blocked by the two limiting parts 122, and the force is relatively balanced, avoiding the damage of the nail magazine assembly 1 caused by uneven force on the left and right sides, and the reliability is high.

[0066] It should be understood that the above description of the structure of the elastic limiting unit 12 is illustrative, but not limited thereto.

[0067] Exemplarily, in the scheme of the spring structure, an 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.

[0068] Exemplarily, the trigger portion 121 and the limiting portion 122 can both be configured as sliding members, which can be slidably installed on the nail magazine 11 along the depth direction of the mounting hole 111 (for example, the left and right direction), and the elastic force transmission structure 123, such as a spring or a compression spring, is located between the sliding member where the trigger portion 121 is located and the sliding member where the limiting portion 122 is located. The elastic force transmission structure 123 is used to realize the transmission of the force between the two. At this time, the sliding limit positions of the trigger portion 121 and the limiting portion 122 should be limited, which will not be described in detail here.

[0069] Another embodiment of the present invention provides a stapler, which includes the stapler assembly 1 of the above embodiment. The stapler can be used for abdominal surgery, etc., which is not intended to be limiting.

[0070] The stapler has all the beneficial effects of the staple cartridge assembly 1, which will not be described in detail here.

[0071] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A nail magazine assembly, characterized in that: The invention comprises a nail magazine (11) and an elastic limiting unit (12), wherein 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) comprises an elastic force transmission structure (123) and a trigger portion (121) and a limiting portion (122) located at two ends of the elastic force transmission structure (123), wherein the trigger portion (121) and the limiting portion (122) are respectively arranged near the inner end and the outer end of the mounting hole (111), wherein the trigger portion (121) is used to be arranged on a movement path of a nail pushing member (13) moving along its nail pushing direction, and the limiting portion (122) is arranged corresponding to a set area of ​​the outer surface of the nail magazine (11), wherein the set area is an area of ​​the outer surface of the nail magazine (11) that is opposite to the nail magazine seat (2).

2. The staple cartridge assembly according to claim 1, wherein: The nail magazine (11) is provided with the trigger portion (121) corresponding to the end limit position of the nail pushing member (13) moving along the nail pushing direction.

3. The staple cartridge assembly according to claim 1 or 2, characterized in that: The elastic limiting unit (12) is a spring sheet structure, the fixed end of the spring sheet structure is fixedly arranged at 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.

4. The staple cartridge assembly according to claim 3, 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) is fixedly connected to the nail magazine (11) on one circumferential side of the mounting hole (111) to form a fixed end of the spring sheet structure. 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 with the second section (12b). 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 third section (12c) is used to form the elastic force transmission structure (123).

5. The staple cartridge assembly according to claim 4, wherein: The first section (12a) is connected to an inserting section (12d), a slot (113) is provided on the nail magazine (11), and the inserting section (12d) is inserted into the slot (113).

6. The staple cartridge assembly according to claim 4, wherein: The nail magazine seat (2) is provided with a first groove-shaped structure (21), and the nail magazine assembly is used to be placed in the first groove-shaped structure (21) along a set direction, and the first section (12a), the second section (12b) and the third section (12c) are connected in sequence along the set direction.

7. The staple cartridge assembly according to claim 1 or 2, characterized in that: The nail magazine assembly also includes a nail magazine cover (14), which is detachably connected to the nail magazine (11), and the nail magazine assembly is connected to the nail magazine seat (2) through the nail magazine cover (14). The nail magazine cover (14) is provided with a through hole (141), and the through hole (141) is connected to the mounting hole (111). The through hole (141) is used for the passage of the limiting portion (122).

8. The staple cartridge assembly according to claim 3, wherein: The nail magazine assembly also includes a nail magazine cover (14), the nail magazine cover (14) is detachably connected to the nail magazine (11), the nail magazine assembly is connected to the nail magazine seat (2) through the nail magazine cover (14), a through hole (141) is provided on the nail magazine cover (14), the through hole (141) is connected to the mounting hole (111), the through hole (141) is used for the passage of the limiting portion (122), and 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).

9. The staple cartridge assembly according to claim 1 or 2, characterized in that: The first side walls (112) on both sides of the nail magazine (11) along the width direction are both provided with the mounting holes (111); And / or, the trigger portion (121) and the limiting portion (122) are both configured as sliding members, the sliding member being slidably mounted on the nail magazine (11) along the depth direction of the mounting hole (111), the elastic force transmission structure (123) being located in the mounting hole (111), and the two ends of the elastic force transmission structure (123) being respectively abutted against the two sliding members.

10. A stapler, characterized in that: It comprises a nail magazine assembly as described in any one of claims 1 to 9.

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