Safety firing anastomat

Abstract

The application discloses a safe firing anastomat and belongs to the technical field of medical devices. The safe firing anastomat comprises a fixed handle which is fixedly arranged on an anastomat body, the fixed handle has a hollow structure, an arc-shaped partition is arranged in the fixed handle, the arc-shaped partition divides the hollow structure into a first arc-shaped guide groove and a second arc-shaped guide groove, and a first retreat-stop platform is arranged on one side of the arc-shaped partition close to the first arc-shaped guide groove. A clamping assembly comprises a limiting pin and an elastic flap, the firing handle is provided with a strip-shaped sliding groove, one end of the limiting pin penetrates through the first arc-shaped guide groove and is arranged in the strip-shaped sliding groove in an extending mode, one end of the elastic flap is connected with the firing handle, the other end of the elastic flap is abutted against the limiting pin, and the elastic flap is used for making the limiting pin always have a sliding tendency along the strip-shaped sliding groove. The firing handle can be reset only after the firing handle is gripped in place, and the success rate of surgery is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a safe firing stapler. Background Technology

[0002] A tubular stapler is a medical device specifically designed for digestive tract reconstruction surgery. It can quickly and accurately anastomose two segments of the digestive tract lumen using mechanical means. This stapler typically features a streamlined design for easy one-handed operation and is available in various sizes to accommodate lumens of different diameters.

[0003] Tubular staplers have been used clinically for a long time, but there are cases where the surgery fails because the firing handle is not fully grasped during the operation.

[0004] Therefore, there is an urgent need to provide a safe firing stapler to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a safe firing stapler. In clinical use, the firing handle must be held in place before it can be reset, thereby improving the success rate of the surgery.

[0006] To achieve the above objectives, the following technical solution is provided:

[0007] A safety-firing stapler includes a stapler body and a firing handle, wherein the firing handle is rotatably mounted on the stapler body, and the safety-firing stapler further includes:

[0008] A fixed handle is fixedly mounted on the main body of the stapler. The fixed handle has a hollow structure and an arc-shaped partition is provided inside the fixed handle. The arc-shaped partition divides the hollow structure into a first arc-shaped guide groove and a second arc-shaped guide groove. A first anti-reverse platform is provided on the side of the arc-shaped partition near the first arc-shaped guide groove.

[0009] A snap-fit ​​assembly includes a limiting pin and an elastic flap. The firing handle is provided with a strip-shaped groove. One end of the limiting pin passes through the first arc-shaped guide groove and extends into the strip-shaped groove. One end of the elastic flap is connected to the firing handle, and the other end of the elastic flap abuts against the limiting pin. The elastic flap is used to ensure that the limiting pin always has a tendency to slide along the strip-shaped groove.

[0010] The limiting pin is configured such that during the firing process of the firing handle, the limiting pin moves within the first arc-shaped guide groove and is limited by the first anti-reverse platform; after the firing handle completes firing, the limiting pin slides into the second arc-shaped guide groove, causing the firing handle to reset.

[0011] As an alternative to the safety firing stapler, the arc-shaped separator is provided with a number of second anti-reverse platforms at intervals along its own length.

[0012] As an optional solution for the safety firing stapler, the firing handle includes a first bottom wall and two first side walls, the two first side walls are respectively disposed on both sides of the first bottom wall, the first side walls are provided with the strip groove, one end of the elastic flap is connected to the first bottom wall, and the end of the limiting pin is slidably disposed in the strip groove.

[0013] As an optional solution for the safety-firing stapler, the elastic flaps are provided in two forms.

[0014] As an optional solution for the safety-firing stapler, the first bottom wall is provided with a limiting hole, and the elastic flap includes a first flap portion, a second flap portion, a third flap portion and a fourth flap portion connected in sequence. The first flap portion abuts against the limiting pin, the second flap portion abuts against the upper surface of the first bottom wall, the third flap portion passes through the limiting hole, and the fourth flap portion abuts against the lower surface of the first bottom wall.

[0015] As an optional solution for the safety-firing stapler, the safety-firing stapler also includes a pin, which is disposed on the stapler body. Both first sidewalls are provided with pin holes, and the pin passes through the pin holes.

[0016] As an alternative to the safety-firing stapler, the safety-firing stapler also includes a protective element, which is fitted onto the firing handle.

[0017] As an optional solution for the safety-firing stapler, the protective component includes a second bottom wall and two second side walls. The two second side walls are respectively disposed on both sides of the second bottom wall. A first limiting step and a second limiting step are provided at intervals on the first side wall. A first locking protrusion and a second locking protrusion are provided at intervals on the inner wall surface of the second side wall. The first locking protrusion engages with the first limiting step, and the second locking protrusion engages with the second limiting step.

[0018] As an alternative to the safety-firing stapler, the lower surface of the first sidewall is provided with a first notch and a second notch spaced apart, and the upper surface of the second bottom wall is provided with a first protrusion and a second protrusion spaced apart. The first notch engages with the first protrusion, the second notch engages with the second protrusion, and / or

[0019] The upper surface of the second bottom wall is provided with a boss, which is sandwiched between the two first side walls.

[0020] As an optional solution for the safety firing stapler, the first bottom wall is provided with a first clearance hole, and the second bottom wall is provided with a second clearance hole. The first clearance hole and the second clearance hole are arranged vertically and vertically, and the fixed handle can extend out of the first clearance hole and the second clearance hole.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The safety-firing stapler provided by this invention has a firing handle rotatably connected to the stapler body, and a fixed handle fixedly connected to the stapler body. The hollow structure of the fixed handle is divided into a first arc-shaped guide groove and a second arc-shaped guide groove by an arc-shaped partition. The arc-shaped partition is provided with a first anti-reverse platform, and the limiting pin of the locking component is slidably disposed in the strip-shaped groove. The limiting pin can be pressed against the arc-shaped partition by an elastic flap. When firing, the limiting pin will contact the first anti-reverse platform on the arc-shaped partition. At this time, releasing the firing handle will limit the firing handle and prevent it from returning to its original position. If the firing handle is held, the limiting pin will continue to move along the first arc-shaped guide groove. When the firing handle is fired to the bottom, the limiting pin will slide from the first arc-shaped guide groove into the second arc-shaped guide groove by the elastic thrust of the elastic flap. At this time, releasing the firing handle will allow the instrument to return to its original position normally. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the assembly of the safety firing stapler in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the safe firing stapler in an embodiment of the present invention (components inside the stapler body are not shown);

[0026] Figure 3 This is an exploded schematic diagram of the safe firing stapler in an embodiment of the present invention (components inside the stapler body are not shown);

[0027] Figure 4 This is a schematic diagram of the fixed handle structure in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the structure of the elastic flap in an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the assembly of the firing handle and the protective component in an embodiment of the present invention;

[0030] Figure 7 This is a first explosion diagram of the firing handle and protective component in an embodiment of the present invention;

[0031] Figure 8 This is a second explosion diagram of the firing handle and protective component in an embodiment of the present invention.

[0032] Figure label:

[0033] 1. Anastomosis device body; 2. Firing handle; 3. Fixing handle; 4. Snap-fit ​​assembly; 5. Pin; 6. Protective components;

[0034] 21. First bottom wall; 211. Limiting hole; 212. First clearance hole; 22. First side wall; 221. Strip groove; 222. Pin hole; 223. First limiting step; 224. Second limiting step; 225. First notch; 226. Second notch;

[0035] 31. Arc-shaped separator; 311. First anti-reverse platform; 312. Second anti-reverse platform; 32. First arc-shaped guide groove; 33. Second arc-shaped guide groove;

[0036] 41. Limiting pin; 42. Elastic folding piece; 421. First folding plate; 422. Second folding plate; 423. Third folding plate; 424. Fourth folding plate;

[0037] 61. Second bottom wall; 611. First protrusion; 612. Second protrusion; 613. Boss; 614. Second clearance hole; 62. Second side wall; 621. First locking protrusion; 622. Second locking protrusion. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0041] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0042] To ensure that the firing handle can be fully grasped before it can return to its original position during clinical use, thus improving the success rate of surgery, this embodiment provides a safe firing stapler. The following describes how... Figures 1 to 8 The specific content of this embodiment will be described in detail.

[0043] like Figures 1 to 4As shown, the safety-firing stapler in this embodiment includes a stapler body 1, a firing handle 2, a fixed handle 3, and a locking assembly 4. The firing handle 2 is rotatably mounted on the stapler body 1. The fixed handle 3 is fixedly mounted on the stapler body 1 and has a hollow structure. An arc-shaped divider 31 is provided inside the fixed handle 3, dividing the hollow structure into a first arc-shaped guide groove 32 and a second arc-shaped guide groove 33. A first anti-reverse platform 311 is provided on the side of the arc-shaped divider 31 closest to the first arc-shaped guide groove 32. The locking assembly 4 includes a limiting pin 41 and an elastic flap 42. The firing handle 2 is provided with a strip groove 221. One end of the limiting pin 41 passes through the first arc-shaped guide groove 32 and extends into the strip groove 221. One end of the elastic flap 42 is connected to the firing handle 2, and the other end of the elastic flap 42 abuts against the limiting pin 41. The elastic flap 42 is used to ensure that the limiting pin 41 always has a tendency to slide along the strip groove 221. The limiting pin 41 is configured such that during the firing process of the firing handle 2, the limiting pin 41 moves within the first arc-shaped guide groove 32 and can be limited by the first anti-reverse platform 311. After the firing handle 2 completes firing, the limiting pin 41 slides into the second arc-shaped guide groove 33, causing the firing handle 2 to reset.

[0044] In summary, the safety-firing stapler provided in this embodiment has a firing handle 2 rotatably connected to the stapler body 1, and a fixed handle 3 fixedly connected to the stapler body 1. The hollow structure of the fixed handle 3 is divided into a first arc-shaped guide groove 32 and a second arc-shaped guide groove 33 by an arc-shaped partition 31. The arc-shaped partition 31 is provided with a first anti-reverse platform 311. The limiting pin 41 of the locking assembly 4 is slidably disposed in the strip-shaped groove 221. The limiting pin 41 can be pressed against the arc-shaped partition 31 by the elastic flap 42. When firing, the limiting pin 41 will contact the first anti-reverse platform 311 on the arc-shaped partition 31. At this time, when the firing handle 2 is released, the firing handle 2 will be limited and cannot be reset; if the firing handle 2 is continued to be held, the limiting pin 41 will continue to move along the first arc-shaped guide groove 32. When the firing handle 2 is fired to the bottom, the limiting pin 41 slides from the first arc-shaped guide groove 32 into the second arc-shaped guide groove 33 through the elastic thrust of the elastic flap 42. At this time, the firing handle 2 is released and the instrument can be reset normally.

[0045] Furthermore, the arc-shaped separator 31 is provided with a plurality of second anti-recoil platforms 312 spaced apart along its length. By providing multiple second anti-recoil platforms 312 on the arc-shaped separator 31, the multi-position use of the firing handle 2 can be satisfied. For example, as shown... Figure 4 As shown, in this embodiment, a second anti-reverse platform 312 is designed on the arc-shaped separator 31. The first anti-reverse platform 311 and the second anti-reverse platform 312 are arranged at intervals, and both the first anti-reverse platform 311 and the second anti-reverse platform 312 are triangular mechanisms.

[0046] Furthermore, such as Figures 3 to 8 As shown, the firing handle 2 includes a first bottom wall 21 and two first side walls 22. The two first side walls 22 are respectively disposed on both sides of the first bottom wall 21. A strip-shaped groove 221 is provided on the first side wall 22. One end of the elastic flap 42 is connected to the first bottom wall 21, and the end of the limiting pin 41 is slidably disposed in the strip-shaped groove 221. The first bottom wall 21 and the two first side walls 22 enclose a space for mounting the snap-fit ​​assembly 4. The firing handle 2 can be made of metal, which has high structural strength.

[0047] Optionally, two elastic flaps 42 are provided. The two ends of the limiting pin 41 are slidably connected to the corresponding strip grooves 221. By adding two elastic flaps 42, the thrust on the limiting pin 41 is increased on the one hand, and the force on the limiting pin 41 is balanced on the left and right sides on the other hand, so that the two ends of the limiting pin 41 move simultaneously.

[0048] Furthermore, the first bottom wall 21 is provided with a limiting hole 211. The elastic flap 42 includes a first flap portion 421, a second flap portion 422, a third flap portion 423, and a fourth flap portion 424 connected in sequence. The first flap portion 421 abuts against the limiting pin 41, the second flap portion 422 abuts against the upper surface of the first bottom wall 21, the third flap portion 423 passes through the limiting hole 211, and the fourth flap portion 424 abuts against the lower surface of the first bottom wall 21. The second flap portion 422 and the fourth flap portion 424 are parallel. Through the cooperation of the third flap portion 423 and the limiting hole 211, the elastic flap 42 is securely installed on the first bottom wall 21 of the firing handle 2.

[0049] For example, the safety firing stapler also includes a pin 5, which is disposed on the stapler body 1. Both first sidewalls 22 are provided with pin holes 222, and the pin 5 passes through the pin holes 222. The firing handle 2 is rotatably connected to the stapler body 1 through the pin 5.

[0050] Furthermore, the safety firing coupler also includes a protective element 6, which is fitted onto the firing handle 2. By adding the protective element 6, it serves two purposes: firstly, to protect the firing handle 2 from damage, and secondly, to increase the contact friction with the fingers, preventing slippage during firing.

[0051] Furthermore, the protective component 6 includes a second bottom wall 61 and two second side walls 62, which are respectively disposed on both sides of the second bottom wall 61. A first limiting step 223 and a second limiting step 224 are spaced apart on the first side wall 22. A first locking protrusion 621 and a second locking protrusion 622 are spaced apart on the inner wall surface of the second side wall 62. The first locking protrusion 621 engages with the first limiting step 223, and the second locking protrusion 622 engages with the second limiting step 224. In this embodiment, both the second limiting step 224 and the second locking protrusion 622 are located near the end. By adding the first limiting step 223, the second limiting step 224, the first locking protrusion 621, and the second locking protrusion 622, the connection between the protective component 6 and the firing handle 2 is ensured.

[0052] Furthermore, the lower surface of the first sidewall 22 is provided with a first notch 225 and a second notch 226 spaced apart, and the upper surface of the second bottom wall 61 is provided with a first protrusion 611 and a second protrusion 612 spaced apart. The first notch 225 engages with the first protrusion 611, and the second notch 226 engages with the second protrusion 612. The upper surface of the second bottom wall 61 is provided with a boss 613, which is sandwiched between the two first sidewalls 22. By adding the first notch 225, the second notch 226, the first protrusion 611, the second protrusion 612, and the boss 613, the connection between the protective member 6 and the firing handle 2 is further improved.

[0053] Furthermore, the first bottom wall 21 is provided with a first clearance hole 212, and the second bottom wall 61 is provided with a second clearance hole 614. The first clearance hole 212 and the second clearance hole 614 are arranged vertically correspondingly, and the fixing handle 3 can extend out of the first clearance hole 212 and the second clearance hole 614. During the process of the firing handle 2 driving the locking assembly 4 to move, as the firing handle 2 moves upward, the bottom of the fixing handle 3 will insert into the interior of the firing handle 2. By adding the first clearance hole 212 and the second clearance hole 614, structural interference between the fixing handle 3 and the firing handle 2 and the protective component 6 can be avoided.

[0054] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A safety-firing stapler, comprising a stapler body (1) and a firing handle (2), wherein the firing handle (2) is rotatably mounted on the stapler body (1), characterized in that, The safety-firing stapler also includes: A fixed handle (3) is fixedly mounted on the main body (1) of the stapler. The fixed handle (3) has a hollow structure. An arc-shaped partition (31) is provided inside the fixed handle (3). The arc-shaped partition (31) divides the hollow structure into a first arc-shaped guide groove (32) and a second arc-shaped guide groove (33). A first anti-reverse platform (311) is provided on the side of the arc-shaped partition (31) close to the first arc-shaped guide groove (32). The snap-fit ​​assembly (4) includes a limiting pin (41) and an elastic flap (42). The firing handle (2) is provided with a strip groove (221). One end of the limiting pin (41) passes through the first arc-shaped guide groove (32) and extends into the strip groove (221). One end of the elastic flap (42) is connected to the firing handle (2), and the other end of the elastic flap (42) abuts against the limiting pin (41). The elastic flap (42) is used to make the limiting pin (41) always have the tendency to slide along the strip groove (221). The limiting pin (41) is configured such that during the firing process of the firing handle (2), the limiting pin (41) moves in the first arc-shaped guide groove (32) and is limited by the first anti-reverse platform (311). After the firing handle (2) completes firing, the limiting pin (41) slides into the second arc-shaped guide groove (33) to reset the firing handle (2).

2. The safe firing stapler according to claim 1, characterized in that, The arc-shaped separator (31) is provided with a number of second anti-reverse platforms (312) at intervals along its own length.

3. The safe firing stapler according to claim 1, characterized in that, The firing handle (2) includes a first bottom wall (21) and two first side walls (22). The two first side walls (22) are respectively disposed on both sides of the first bottom wall (21). The first side wall (22) is provided with the strip groove (221). One end of the elastic flap (42) is connected to the first bottom wall (21), and the end of the limiting pin (41) is slidably disposed in the strip groove (221).

4. The safe firing stapler according to claim 3, characterized in that, Two elastic flaps (42) are provided.

5. The safe firing stapler according to claim 3, characterized in that, The first bottom wall (21) is provided with a limiting hole (211). The elastic flap (42) includes a first flap portion (421), a second flap portion (422), a third flap portion (423), and a fourth flap portion (424) connected in sequence. The first flap portion (421) abuts against the limiting pin (41), the second flap portion (422) abuts against the upper surface of the first bottom wall (21), the third flap portion (423) passes through the limiting hole (211), and the fourth flap portion (424) abuts against the lower surface of the first bottom wall (21).

6. The safe firing stapler according to claim 3, characterized in that, The safety firing stapler also includes a pin (5), which is disposed on the stapler body (1). Both first sidewalls (22) are provided with pin holes (222), and the pin (5) passes through the pin holes (222).

7. The safe firing stapler according to claim 4, characterized in that, The safety firing coupler also includes a protective element (6), which is fitted onto the firing handle (2).

8. The safe firing stapler according to claim 7, characterized in that, The protective component (6) includes a second bottom wall (61) and two second side walls (62). The two second side walls (62) are respectively disposed on both sides of the second bottom wall (61). A first limiting step (223) and a second limiting step (224) are provided at intervals on the first side wall (22). A first locking protrusion (621) and a second locking protrusion (622) are provided at intervals on the inner wall surface of the second side wall (62). The first locking protrusion (621) is engaged with the first limiting step (223), and the second locking protrusion (622) is engaged with the second limiting step (224).

9. The safe firing stapler according to claim 8, characterized in that, The lower surface of the first sidewall (22) is provided with a first notch (225) and a second notch (226) spaced apart, and the upper surface of the second bottom wall (61) is provided with a first protrusion (611) and a second protrusion (612) spaced apart. The first notch (225) engages with the first protrusion (611), and the second notch (226) engages with the second protrusion (612), and / or The upper surface of the second bottom wall (61) is provided with a boss (613), which is sandwiched between the two first side walls (22).

10. The safe firing stapler according to claim 8, characterized in that, The first bottom wall (21) is provided with a first clearance hole (212), and the second bottom wall (61) is provided with a second clearance hole (614). The first clearance hole (212) and the second clearance hole (614) are arranged vertically and vertically respectively. The fixed handle (3) can extend out of the first clearance hole (212) and the second clearance hole (614).

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