Linear anastomat with function of preventing mistaken touch and strike

Abstract

The utility model discloses a linear type anastomat with the function of preventing mistaken triggering, which comprises a rod body assembly, the left end of the rod body assembly is provided with a nail abutting seat assembly, a nail bin assembly and a clamping plate assembly, the right end of the rod body assembly is provided with a handle assembly, the rod body assembly comprises a push plate located in the middle, and the front side and the rear side of the push plate are respectively provided with a sliding plate and a fixed plate from inside to outside in sequence. The left end of the push plate corresponds to the nail bin assembly, the right end of the push plate is hinged to the upper end of the movable handle, a safety assembly is installed on the rod body assembly, a locking mechanism is arranged on the safety assembly, and the locking mechanism has a locking state and an unlocking state; in a locking state, the safety assembly is fixedly locked with the push plate through the locking mechanism; and in an unlocking state, the locking mechanism is separated from the push plate. The safety assembly enables the linear anastomat to be in a locking state when the linear anastomat is unsealed and used, the linear anastomat can still keep the locking state even if the movable handle is touched by mistake, the problem that the anastomosis position deviates due to mistaken touching and striking is effectively avoided, and the surgical operation safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a linear stapler with a function to prevent accidental activation. Background Technology

[0002] Currently, staplers are frequently used for surgical anastomosis of physiological tissues such as the esophagus, stomach, and intestines. Among them, the linear stapler is a particularly important type. The working principle of a linear stapler is as follows: First, the jaws between the anvil assembly and the staple cartridge assembly clamp the tissue to be anastomosed. Then, the surgeon fires the movable handle, which, through a mechanical transmission device, drives the staples from the staple cartridge assembly into the tissue. After passing through two layers of tissue, these staples are obstructed by the anvil in front, bending inward and forming a staggered "B" shape, thus permanently stapled the two layers of tissue together. Because small blood vessels can pass through the gaps in the "B"-shaped staples, the blood supply to the suture site and its distal end is not affected. Linear staplers are characterized by ease of operation and good safety, and are therefore widely used in minimally invasive surgery.

[0003] Existing linear staplers require medical personnel to precisely align the jaws of the stapler with the tissue to be anastomosed. If the operator accidentally touches the movable handle during this process, it can lead to serious problems such as deviation in the anastomosis position, and even serious medical accidents. Therefore, this invention proposes a linear stapler with an anti-accidental triggering function to solve the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a linear stapler with an anti-accidental triggering function. By installing a safety component on the rod assembly, the linear stapler is locked when opened for use. Thus, even if the operator accidentally touches the moving handle when aligning the jaws of the linear stapler with the tissue to be anastomosed, the locked state is maintained, effectively preventing deviations in the anastomosis position caused by accidental touch of the moving handle and ensuring the safety of the anastomosis operation. The overall structure is ingeniously and reasonably designed, with high feasibility for preparation and implementation, and strong practicality.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a linear stapler with an anti-accidental triggering function, comprising a rod assembly. The left end of the rod assembly has an anvil assembly, a staple cartridge assembly, and a clamping plate assembly. The staple cartridge assembly is installed inside the clamping plate assembly. A jaw for clamping tissue is formed between the anvil assembly and the staple cartridge assembly. The right end of the rod assembly has a handle assembly, which includes a fixed handle and a movable handle hinged to the fixed handle. The fixed handle has a reset button. The rod assembly includes a push plate located in the middle. Sliding plates and fixed plates are sequentially arranged from the inside to the outside on the front and rear sides of the push plate, respectively. The left end of the push plate corresponds to the staple cartridge assembly, and the right end is hinged to the upper end of the movable handle. A safety component is installed on the rod assembly, and the safety component has a locking mechanism with a locked state and an unlocked state. In the locked state, the safety component is fixedly locked to the push plate through the locking mechanism; in the unlocked state, the locking mechanism is disengaged from the push plate.

[0006] This utility model discloses a linear stapler with an anti-accidental triggering function. By installing a safety component on the rod assembly, the linear stapler is locked when opened for use. This ensures that even if the operator accidentally triggers the moving handle when aligning the jaws of the linear stapler with the tissue to be anastomosed, the stapler remains locked, effectively preventing deviations in the anastomosis position caused by accidental triggering and ensuring the safety of the anastomosis operation. The overall structure is ingeniously and reasonably designed, with high feasibility for preparation and implementation, and strong practicality.

[0007] A preferred technical solution is that the safety assembly includes a base, a locking plate, and a drive pin. The base has through holes penetrating both the left and right end faces. Fixing plates located on the front and rear sides of the rod assembly are fixed inside the through holes on the base. A limiting platform protrudes from the upper surface of the push plate. The locking plate is installed inside the upper end of the through hole, and the middle part of the locking plate is rotatably mounted on the inner walls of the front and rear sides of the through hole via a rotating shaft that protrudes from its front and rear end faces. A pin hole penetrating the top left end of the through hole is provided, and the drive pin is installed inside the pin hole. The upper end of the drive pin extends beyond the top of the base, and the lower end extends into the through hole and has a truncated cone abutting against the left end of the upper side of the locking plate. The outer diameter of the platform is greater than the inner diameter of the pin hole. The top right end of the through hole is provided with an elastic element that abuts against the right end of the upper side of the locking plate. The right end of the locking plate is provided with a locking hole that passes through both the front and rear end faces. The inner wall of the front or rear side of the through hole is provided with a locking pin mounting hole in the horizontal direction. An elastic locking pin assembly is installed inside the locking pin mounting hole. The elastic locking pin assembly has a pin head facing the inside of the through hole and adapted to the locking hole on the locking plate. The lower side of the locking plate is provided with a slope structure that is higher on the left and lower on the right. The upper end face of the limiting platform is provided with a slope structure that is higher on the left and lower on the right. The through hole, locking plate, locking hole, driving pin, elastic element, elastic locking pin assembly, and pin head constitute the locking mechanism.

[0008] In the locked state, the upper end face of the truncated cone located at the lower end of the drive pin abuts against the lower port of the pin hole, and the elastic element forces the lower end of the right side face of the locking plate to abut against the left side face of the limiting platform on the push plate, and the pin head retracts into the locking pin mounting hole.

[0009] In the unlocked state, the drive pin is pressed down to cause the right end of the locking plate to tilt upwards and disengage from the limiting platform on the push plate, and the pin head is inserted into the locking hole on the locking plate. The safety assembly structure is ingeniously and reasonably designed. The locking mechanism uses a seesaw and elastic element to make the right end of the locking plate tilt upwards and disengage from the limiting platform on the push plate when the drive pin is pressed, thus achieving unlocking. The lower side of the locking plate is designed with a slope structure that is higher on the left and lower on the right, and the upper end of the limiting platform is designed with a slope structure that is higher on the left and lower on the right. Therefore, after the reset button is pressed, when the push rod is reset, the limiting platform can smoothly slide over the lower side of the locking plate, effectively avoiding jamming between the limiting platform and the locking plate, and ensuring smooth reset of the push plate.

[0010] A further preferred technical solution is that the base is formed by joining base body one and base body two together. The upper and lower ends of the two opposing sides of base body one and base body two are provided with matching insertion holes and insertion posts. The middle of the two opposing sides of base body one and base body two has a groove penetrating both ends. The upper left side of the two opposing sides of base body one and base body two has a semi-circular groove in the longitudinal direction, and the right side has a downward-opening semi-circular blind groove. Base body one and base body two are fixedly connected together by the insertion holes and insertion posts. The grooves on the two opposing sides are joined to form the through hole, the semi-circular groove is joined to form the pin hole, and the semi-circular blind groove is joined to form the downward-opening blind hole. The elastic element is spring one, and the upper end of spring one is inserted into the blind hole. The base is formed by connecting and splicing two base bodies, which ensures the convenience of installing the safety component on the rod assembly. Furthermore, the safety component can be used as the final processing step, and it has good implantability in the original processing steps of the linear stapler, which helps to ensure the processing efficiency of the linear stapler.

[0011] A further preferred technical solution includes a locking pin mounting hole that is formed through the upper end of either seat one or seat two, and the locking pin mounting hole has a two-stage stepped hole structure. The elastic locking pin assembly also includes a spring two installed inside the outer large-diameter section of the locking pin mounting hole, and the pin head is installed inside the inner small-diameter section of the locking pin mounting hole. The outer end of the pin head has a frustum two that engages with the inner end of the spring two. A plug for limiting the spring two is interference-fitted onto the outer end of the locking pin mounting hole. The elastic locking pin assembly and the locking pin mounting hole have ingenious and reasonable structural designs, and their compatibility is good, ensuring the sensitivity of the pin head on the elastic locking pin assembly when it extends or retracts inside the locking pin mounting hole.

[0012] A further preferred technical solution is that a countersunk groove is formed at the lower end of the pin hole, and the upper end of the frustum is embedded in the countersunk groove at the lower end of the pin hole. The frustum at the lower end of the driving pin is embedded in the countersunk groove at the lower end of the pin hole, thereby preventing the frustum from protruding too far from the top of the base. This helps ensure that the locking plate remains basically horizontal when locked, that is, ensures the stability when the lower end of the right side of the locking plate abuts against the left side of the limiting platform on the push plate.

[0013] A further preferred technical solution includes several positioning posts located on the vertical bottom surfaces of corresponding grooves on the middle of the two opposing sides of the seat body one and seat body two. Several positioning holes are provided on the fixing plate. The seat body one and seat body two are respectively connected to the corresponding positioning holes on the fixing plate via the positioning posts. The connection between the seat body one or seat body two and the positioning holes on the fixing plate via the positioning posts simplifies the installation process and helps improve the installation efficiency of the safety component on the pole assembly.

[0014] A further preferred technical solution is that the upper ends of the two opposing sides of the base body one and the base body two are respectively provided with shaft mounting holes, one end of the shaft is inserted into the shaft mounting hole on the base body one, and the other end is inserted into the shaft mounting hole on the base body two.

[0015] The advantages and beneficial effects of this utility model are as follows:

[0016] 1. This utility model discloses a linear stapler with an anti-accidental triggering function. By installing a safety component on the rod assembly, the linear stapler is locked when opened for use. Thus, even if the operator accidentally touches the moving handle when aligning the jaws of the linear stapler with the tissue to be anastomosed, the locked state is maintained, effectively preventing deviations in the anastomosis position caused by accidental touch of the moving handle and ensuring the safety of the anastomosis operation. The overall structure is ingeniously and reasonably designed, with high feasibility for preparation and implementation, and strong practicality.

[0017] 2. The safety component has a clever and reasonable structural design. The locking mechanism uses a seesaw and elastic element to make the right end of the locking plate tilt upwards and disengage from the limit platform on the push plate when the drive pin is pressed, thus unlocking the device. The lower side of the locking plate is designed with a slope structure that is higher on the left and lower on the right, and the upper end of the limit platform is also designed with a slope structure that is higher on the left and lower on the right. This allows the limit platform to slide smoothly over the lower side of the locking plate when the push rod is reset after the reset button is pressed, effectively preventing the limit platform from jamming with the locking plate and ensuring smooth reset of the push plate.

[0018] 3. The base is formed by connecting and splicing base body one and base body two, which ensures the convenience of installing the safety component on the rod body component. Furthermore, the safety component can be used as the last processing step, and it has good implantability in the original processing steps of the linear stapler, which helps to ensure the processing efficiency of the linear stapler.

[0019] 4. The elastic lock stop pin assembly and the lock stop pin mounting hole are ingeniously and reasonably designed, and their compatibility is good, ensuring the sensitivity of the pin head on the elastic lock stop pin assembly when it extends or retracts inside the lock stop pin mounting hole.

[0020] 5. The truncated cone at the lower end of the drive pin is fitted into the countersunk groove at the lower end of the pin hole, thereby avoiding excessive exposure of the truncated cone at the top of the base. This helps to ensure that the locking plate remains basically horizontal when locked, that is, to ensure the stability when the lower right side of the locking plate abuts against the left side of the limiting platform on the push plate.

[0021] 6. The base body one or base body two is fixedly connected to the positioning plate by inserting the positioning pin into the positioning hole. The installation method is simple and helps to improve the installation efficiency of the safety component on the pole assembly. Attached Figure Description

[0022] Figure 1 This is a front view of a linear stapler with anti-accidental triggering function according to this utility model;

[0023] Figure 2 This is a front view of the linear stapler with anti-accidental triggering function of this utility model (base body 2 is hidden);

[0024] Figure 3 yes Figure 2 A magnified view of a section at point S (in locked state);

[0025] Figure 4 yes Figure 2 A magnified view of a section at point S (unlocked state);

[0026] Figure 5 This is a breakdown diagram of the insurance components;

[0027] Figure 6 This is a three-dimensional view of seat two;

[0028] Figure 7 This is the main view of the insurance component;

[0029] Figure 8 yes Figure 7 Cross-sectional view of the central insurance component along the WW direction;

[0030] Figure 9 This is a split view of the rod assembly;

[0031] Figure 10 This is a left front perspective perspective view of a linear stapler with anti-accidental triggering function according to this utility model (the seat body and part of the rod assembly are hidden);

[0032] Figure 11 yes Figure 10 A magnified view of the area at point Z in the middle.

[0033] In the diagram: 1. Anchor seat assembly; 2. Anchor cartridge assembly; 3. Clamping plate assembly; 4. Rod assembly; 5. Handle assembly; 6. Safety assembly; 4-1. Push plate; 4-1a. Limiting platform; 4-2. Sliding plate; 4-3. Fixing plate; 4-3a. Positioning hole; 5-1. Fixed handle; 5-2. Movable handle; 5-3. Reset button; 6-1. Seat 1; 6-2. Seat 2; 6-3. Locking plate; 6-3a. Rotating shaft; 6-3b. Locking hole; 6-4. Drive pin; 6-4a. Frustum 1; 6-5. Spring 1; 6-6. Pin head; 6-6a. Frustum 2; 6-7. Spring 2; 6-8. Plug; A. Positioning post; B. Insertion hole; C. Insertion post; D. Semi-circular groove; E. Semi-circular blind groove; G. Locking pin mounting hole; H. Rotating shaft mounting hole; J. Through hole; K. Groove. Detailed Implementation

[0034] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0035] Example

[0036] like Figures 1-11 As shown, this utility model is a linear stapler with an anti-accidental triggering function, including a rod assembly 4. The left end of the rod assembly 4 has an anvil assembly 1, a staple cartridge assembly 2, and a clamping plate assembly 3. The staple cartridge assembly 2 is installed inside the clamping plate assembly 3. A jaw for clamping tissue is formed between the anvil assembly 1 and the staple cartridge assembly 2. The right end of the rod assembly 4 has a handle assembly 5. The handle assembly 5 includes a fixed handle 5-1 and a movable handle 5-2 hinged to the fixed handle 5-1. The fixed handle 5-1 is provided with a reset button 5-3. 4 includes a push plate 4-1 located in the middle. The push plate 4-1 has a sliding plate 4-2 and a fixed plate 4-3 arranged sequentially from the inside to the outside on its front and rear sides, respectively. The left end of the push plate 4-1 corresponds to the staple cartridge assembly 2, and the right end is hinged to the upper end of the movable handle 5-2. A safety assembly 6 is installed on the rod assembly 4. The safety assembly 6 has a locking mechanism, which has a locked state and an unlocked state. In the locked state, the safety assembly 6 is fixedly locked to the push plate 4-1 through the locking mechanism; in the unlocked state, the locking mechanism is disengaged from the push plate 4-1.

[0037] Preferably, the safety component 6 includes a base, a locking plate 6-3, and a drive pin 6-4. The base has a through hole J penetrating both the left and right end faces. Fixing plates 4-3 located on the front and rear sides of the rod assembly 4 are fixed inside the through hole J on the base. A limiting platform 4-1a protrudes from the upper end face of the push plate 4-1. The locking plate 6-3 is installed inside the upper end of the through hole J, and the middle part of the locking plate 6-3 is rotatably mounted on the inner walls of the front and rear sides of the through hole J via a rotating shaft 6-3a that protrudes from its front and rear end faces. A pin hole penetrating the top left end of the through hole J is provided, and the drive pin 6-4 is installed inside the pin hole. The upper end of the drive pin 6-4 extends beyond the top of the base, and the lower end extends into the through hole J, and has a frustum 6-4a abutting against the left end of the upper side of the locking plate 6-3. The outer diameter of 4a is greater than the inner diameter of the pin hole. The top right end of the through hole J is provided with an elastic element that abuts against the right end of the upper side of the locking plate 6-3. The right end of the locking plate 6-3 is provided with a locking hole 6-3b that passes through both the front and rear end faces. The inner wall surface of the front or rear side of the through hole J is provided with a locking pin mounting hole G along the front and rear horizontal direction. An elastic locking pin assembly is installed inside the locking pin mounting hole G, and the elastic locking pin assembly has a pin head 6-6 facing the inside of the through hole J and adapted to the locking hole 6-3b on the locking plate 6-3. The lower side of the locking plate 6-3 is provided with a slope structure that is higher on the left and lower on the right, and the upper end face of the limiting platform 4-1a is provided with a slope structure that is higher on the left and lower on the right. The through hole J, the locking plate 6-3, the locking hole 6-3b, the driving pin 6-4, the elastic element, the elastic locking pin assembly, and the pin head 6-6 constitute the locking mechanism.

[0038] In the locked state, the upper surface of the frustum 6-4a located at the lower end of the drive pin 6-4 abuts against the lower port of the pin hole, and the elastic element forces the lower end of the right side of the locking plate 6-3 to abut against the left side of the limiting platform 4-1a on the push plate 4-1, and the pin head 6-6 retracts into the locking pin mounting hole G.

[0039] In the unlocked state, the drive pin 6-4 is pressed down to cause the right end of the locking plate 6-3 to tilt upward and disengage from the limiting platform 4-1a on the push plate 4-1, and the pin head 6-6 is inserted into the locking hole 6-3b on the locking plate 6-3.

[0040] More preferably, the base is formed by joining base body 6-1 and base body 6-2 together. The upper and lower ends of the opposing sides of base body 6-1 and base body 6-2 are provided with matching insertion holes B and insertion posts C. The middle of the opposing sides of base body 6-1 and base body 6-2 each has a groove K penetrating both ends. The upper left side of the opposing sides of base body 6-1 and base body 6-2 has a semi-circular groove D in the longitudinal direction. The right side is provided with a downward-opening semi-circular blind groove E. The seat body 6-1 and seat body 6-2 are fixedly connected together by the insertion hole B and the insertion post C. The grooves K on the two opposite sides are spliced ​​together to form the through hole J, the semi-circular groove D is spliced ​​together to form the pin hole, and the semi-circular blind groove E is spliced ​​together to form a downward-opening blind hole. The elastic element is spring 6-5, and the upper end of spring 6-5 is inserted into the blind hole.

[0041] More preferably, the locking pin mounting hole G is opened through the upper end of the first seat 6-1 or the second seat 6-2, and the locking pin mounting hole G is a two-stage stepped hole structure. The elastic locking pin assembly also includes a second spring 6-7 installed inside the outer large-diameter section of the locking pin mounting hole G. The pin head 6-6 is installed inside the inner small-diameter section of the locking pin mounting hole G, and the outer end of the pin head 6-6 has a frustum 6-6a that is snapped together with the inner end of the second spring 6-7. The outer end of the locking pin mounting hole G is interference-fitted with a plug 6-8 for limiting the second spring 6-7.

[0042] More preferably, a countersunk groove is provided at the lower end of the pin hole, and the upper end of the frustum-6-4a is embedded in the countersunk groove at the lower end of the pin hole.

[0043] More preferably, the two sides of the seat 6-1 and the seat 6-2 that meet each other have a number of positioning posts A located on the vertical bottom surface of the corresponding groove K. The fixing plate 4-3 has a number of positioning holes 4-3a. The seat 6-1 and the seat 6-2 are respectively connected to each other by inserting the positioning posts A into the positioning holes 4-3a on the corresponding fixing plate 4-3.

[0044] More preferably, the upper ends of the opposite contact surfaces of the first seat 6-1 and the second seat 6-2 are provided with shaft mounting holes H, one end of the shaft 6-3a is inserted into the shaft mounting hole H on the first seat 6-1, and the other end is inserted into the shaft mounting hole H on the second seat 6-2.

[0045] The working principle of this utility model of a linear stapler with anti-accidental triggering function is as follows:

[0046] The linear stapler is initially in the locked state (see appendix). Figure 3 At this point, spring 6-5 forces the lower right side of the locking plate 6-3 to abut against the left side of the limiting platform 4-1a on the push plate 4-1, and the pin head 6-6 retracts into the locking pin mounting hole G (see Appendix). Figure 8 In use, hold the handle assembly 5 and align the jaws between the anvil assembly 1 and the staple cartridge assembly 2 with the tissue to be clamped; then, while holding the handle assembly 5 with one hand, press the drive pin 6-4 into the safety assembly 6 with the other hand. At this time, the linear stapler changes from the locked state to the unlocked state (see appendix). Figure 4 That is, the drive pin 6-4 is pressed down to make the right end of the locking plate 6-3 tilt upward and disengage from the limiting platform 4-1a on the push plate 4-1, and the pin head 6-6 is inserted into the locking hole 6-3b on the locking plate 6-3; then, the push plate 4-1 moves towards the jaw end by moving the movable handle 5-2 by hand to perform the subsequent anastomosis operation; after the suturing is completed, the reset button 5-3 is pressed, the push plate 4-1 is reset, and the spring 6-5 elastically resets, forcing the right end of the locking plate 6-3 to reset. At this time, the linear stapler changes from the unlocked state to the locked state again.

[0047] This utility model discloses a linear stapler with an anti-accidental triggering function. By installing a safety component on the rod assembly, the linear stapler is locked when opened for use. This ensures that even if the operator accidentally triggers the moving handle when aligning the jaws of the linear stapler with the tissue to be anastomosed, the stapler remains locked, effectively preventing deviations in the anastomosis position caused by accidental triggering and ensuring the safety of the anastomosis operation. The overall structure is ingeniously and reasonably designed, with high feasibility for preparation and implementation, and strong practicality.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A linear stapler with anti-accidental triggering function, comprising a rod assembly (4), wherein the left end of the rod assembly (4) has an anvil assembly (1), a staple cartridge assembly (2) and a clamping plate assembly (3), the staple cartridge assembly (2) being installed inside the clamping plate assembly (3), and a jaw for clamping tissue being formed between the anvil assembly (1) and the staple cartridge assembly (2), and the right end of the rod assembly (4) has a handle assembly (5), wherein the handle assembly (5) includes a fixed handle (5-1) and a hinge. A movable handle (5-2) is installed on the fixed handle (5-1). The fixed handle (5-1) is provided with a reset button (5-3). The rod assembly (4) includes a push plate (4-1) located in the middle. The push plate (4-1) has a sliding plate (4-2) and a fixed plate (4-3) arranged sequentially from the inside to the outside on its front and rear sides, respectively. The left end of the push plate (4-1) corresponds to the staple cartridge assembly (2), and the right end is hinged to the upper end of the movable handle (5-2). The characteristic of this assembly is that... The rod assembly (4) is equipped with a safety assembly (6), which has a locking mechanism. The locking mechanism has a locked state and an unlocked state. In the locked state, the safety assembly (6) is fixedly locked to the push plate (4-1) through the locking mechanism. In the unlocked state, the locking mechanism is disengaged from the push plate (4-1).

2. The linear stapler with anti-accidental triggering function as described in claim 1, characterized in that, The safety assembly (6) includes a base, a locking plate (6-3), and a drive pin (6-4). The base has through holes (J) penetrating both the left and right end faces. Fixing plates (4-3) located on the front and rear sides of the rod assembly (4) are fixed inside the through holes (J) on the base. A limiting platform (4-1a) protrudes from the upper end face of the push plate (4-1). The locking plate (6-3) is installed inside the upper end of the through hole (J), and the middle of the locking plate (6-3) is... The drive pin (6-4) is rotatably mounted on the inner walls of the front and rear sides of the through hole (J) via a pivot (6-3a) that protrudes from both ends of the through hole (J). The top left end of the through hole (J) has a pin hole through which the drive pin (6-4) is installed. The upper end of the drive pin (6-4) extends above the top of the base, and the lower end extends into the through hole (J), where it has a frustum (6-4a) that abuts against the left end of the upper side of the locking plate (6-3). 4a) The outer diameter is greater than the inner diameter of the pin hole. The top right end of the through hole (J) is provided with an elastic element that abuts against the right end of the upper side of the locking plate (6-3). The right end of the locking plate (6-3) is provided with a locking hole (6-3b) that passes through both the front and rear end faces. The inner wall surface of the front or rear side of the through hole (J) is provided with a locking pin mounting hole (G) in the front-rear horizontal direction. An elastic locking pin assembly is installed inside the locking pin mounting hole (G), and the elastic locking pin assembly... The component has a pin head (6-6) facing the inside of the through hole (J) and adapted to the locking hole (6-3b) on the locking plate (6-3). The lower side of the locking plate (6-3) is provided with a slope structure that is higher on the left and lower on the right, and the upper end face of the limiting platform (4-1a) is provided with a slope structure that is higher on the left and lower on the right. The through hole (J), the locking plate (6-3), the locking hole (6-3b), the driving pin (6-4), the elastic element, the elastic locking pin assembly, and the pin head (6-6) constitute the locking mechanism. In the locked state, the upper end face of the frustum (6-4a) located at the lower end of the drive pin (6-4) abuts against the lower port of the pin hole, and the elastic element forces the lower end of the right side face of the locking plate (6-3) to abut against the left side face of the limiting platform (4-1a) on the push plate (4-1), and the pin head (6-6) retracts into the locking pin mounting hole (G). In the unlocked state, the drive pin (6-4) is pressed down so that the right end of the locking plate (6-3) is tilted upward and disengaged from the limiting platform (4-1a) on the push plate (4-1), and the pin head (6-6) is inserted into the locking hole (6-3b) on the locking plate (6-3).

3. The linear stapler with anti-accidental triggering function as described in claim 2, characterized in that, The base is formed by joining base body one (6-1) and base body two (6-2). The upper and lower ends of the opposing sides of base body one (6-1) and base body two (6-2) are provided with matching insertion holes (B) and insertion posts (C). The middle of the opposing sides of base body one (6-1) and base body two (6-2) each has a groove (K) that extends through both ends. The upper left side of the opposing sides of base body one (6-1) and base body two (6-2) has a semi-circular groove (D) in the longitudinal direction, and the right side... A downward-opening semi-circular blind groove (E) is provided. The first seat (6-1) and the second seat (6-2) are fixedly connected together by the insertion hole (B) and the insertion post (C). The grooves (K) on the opposite sides of the two are spliced ​​to form the through hole (J), the semi-circular groove (D) is spliced ​​to form the pin hole, and the semi-circular blind groove (E) is spliced ​​to form the downward-opening blind hole. The elastic element is a spring (6-5), and the upper end of the spring (6-5) is inserted and installed inside the blind hole.

4. The linear stapler with anti-accidental triggering function as described in claim 3, characterized in that, The locking pin mounting hole (G) is opened through the upper end of the first seat (6-1) or the second seat (6-2), and the locking pin mounting hole (G) is a two-stage stepped hole structure. The elastic locking pin assembly also includes a second spring (6-7) installed inside the outer large-diameter section of the locking pin mounting hole (G). The pin head (6-6) is installed inside the inner small-diameter section of the locking pin mounting hole (G), and the outer end of the pin head (6-6) has a second frustum (6-6a) that is engaged with the inner end of the second spring (6-7). The outer end of the locking pin mounting hole (G) is press-fitted with a plug (6-8) for limiting the second spring (6-7).

5. The linear stapler with anti-accidental triggering function as described in claim 4, characterized in that, The lower end of the pin hole is provided with a countersunk groove, and the upper end of the frustum (6-4a) is embedded in the countersunk groove at the lower end of the pin hole.

6. The linear stapler with anti-accidental triggering function as described in claim 5, characterized in that, The two sides of the seat body 1 (6-1) and seat body 2 (6-2) have several positioning posts (A) located on the vertical bottom surface of the corresponding groove (K). The fixing plate (4-3) has several positioning holes (4-3a). The seat body 1 (6-1) and seat body 2 (6-2) are respectively connected to the positioning posts (A) by inserting them into the positioning holes (4-3a) on the corresponding fixing plate (4-3).

7. The linear stapler with anti-accidental triggering function as described in claim 6, characterized in that, The upper ends of the two opposing surfaces of the first seat (6-1) and the second seat (6-2) are respectively provided with shaft mounting holes (H). One end of the shaft (6-3a) is inserted into the shaft mounting hole (H) on the first seat (6-1), and the other end is inserted into the shaft mounting hole (H) on the second seat (6-2).

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