A stapler

Abstract

The present invention discloses a stapler, which includes an inner core of a component and an inner core of a gun body. At the proximal end of the inner core of the component, there are two axially symmetric limiting blocks, and at the distal end of the inner core of the gun body, there are two corresponding axially symmetric limiting grooves. The proximal end of the inner core of the component is connected to the distal end of the inner core of the gun body through the limiting blocks and the limiting grooves to form a primary fixation; the inner core of the gun body includes a safety connection mechanism, and the safety connection mechanism is located on the outer surface of the inner core of the gun body. The safety connection mechanism can at least partially slide along the outer surface of the inner core of the gun body to the outer surface of the inner core of the component, and is used to lock the inner core of the component and the inner core of the gun body to form a secondary fixation. In this application, the safety connection structure provided on the inner core of the gun body slides back and forth between the inner core of the gun body and the inner core of the component, controlling the locking and unlocking of the inner core of the component and the inner core of the gun body, so that the inner core of the component and the inner core of the gun body achieve secondary fixation, the connection is more firm, and the risk of detachment is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a stapler. Background Art

[0002] With the development of modern technology and the improvement of medical standards, surgical staplers, as surgical instruments, have gradually become devices that replace traditional manual suturing in medicine. Their main working principle is to use titanium staples to sever or anastomose diseased tissues, similar to a stapler.

[0003] Currently, laparoscopic staplers play an increasingly important role in modern minimally invasive surgeries. Since the thickness and length of the tissues to be cut and anastomosed are different, when cutting and anastomosing the surgical site, it is necessary to select the corresponding type of component and quickly assemble the component with the gun body. When the component and the gun body of the existing laparoscopic stapler are assembled, there is a risk of detachment due to insecure insertion. An accidental detachment will undoubtedly lead to medical accidents during the surgery and increase the medical risk for the patient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to solve the problem that there is a risk of detachment between the component and the gun body in the prior art, and an accidental detachment will cause medical accidents, and in severe cases, even lead to surgical failure.

[0005] To solve the above technical problem, the technical solution provided by the present invention is as follows:

[0006] A stapler, comprising a component inner core and a gun body inner core. Two axially symmetric limit blocks are provided at the proximal end of the component inner core, and two corresponding axially symmetric limit grooves are provided at the distal end of the gun body inner core. The proximal end of the component inner core and the distal end of the gun body inner core are snap-connected through the limit blocks and the limit grooves to form a primary fixation;

[0007] The gun body inner core includes a safety connection mechanism, which is located on the outer surface of the gun body inner core. The safety connection mechanism can at least partially slide along the outer surface of the gun body inner core to the outer surface of the component inner core for locking the component inner core and the gun body inner core to form a secondary fixation.

[0008] In this application, the safety connection structure provided on the gun body inner core slides back and forth between the gun body inner core and the component inner core to control the locking and unlocking of the component inner core and the gun body inner core, making the connection between the component inner core and the gun body inner core more firm and greatly reducing the risk of detachment.

[0009] In a further technical solution, a first sliding groove is provided on the outer surface of the gun body inner core, and a second sliding groove is provided on the outer surface of the proximal end of the component inner core. The safety connection mechanism can slide along the first sliding groove and the second sliding groove for locking and unlocking the component inner core and the gun body inner core.

[0010] In this application, by respectively providing sliding grooves on the outer wall surfaces of the inner core of the component and the inner core of the gun body, it is convenient for the safety connection mechanism to slide, making the operation more simple and fast.

[0011] In a further technical solution, the safety connection mechanism includes a safety connecting rod. The upper surface of the inner core of the gun body is provided with a distal clamping position platform and a proximal clamping position platform in the first sliding groove for controlling the sliding stroke of the safety connecting rod in the first sliding groove.

[0012] In this application, by providing a far and near clamping position platform in the first sliding groove of the inner core of the gun body, it is convenient to limit the sliding stroke of the safety connecting rod. It can not only ensure that the safety connecting rod smoothly slides between the first sliding groove and the second sliding groove, but also ensure that it does not occupy the space of other components of the inner core of the component and the inner core of the gun body, leaving enough space for other components, which is convenient for process implementation.

[0013] In a further technical solution, the inner wall of the inner core of the gun body is respectively provided with third sliding grooves corresponding to the two limiting blocks. The proximal end of the third sliding groove is connected to the proximal end of the limiting groove and is on the same circumferential line. The limiting blocks of the inner core of the component can slide into the inner core of the gun body along the third sliding groove of the inner core of the gun body. When the inner core of the component is rotated circumferentially, the two limiting blocks can respectively enter the corresponding limiting grooves, and at the same time, the first sliding groove is axially aligned with the second sliding groove, and the safety connecting rod can slide along the first sliding groove and the second sliding groove.

[0014] In this application, by providing a third sliding groove on the inner wall of the inner core of the gun body, it is convenient for the firm connection between the inner core of the component and the inner core of the gun body, which belongs to the first-level fixation. On the basis of this fixation, the distal end of the safety connection mechanism slides from the first sliding groove to the second sliding groove, which belongs to the second-level fixation.

[0015] In a further technical solution, the proximal end of the inner core of the component is provided with a first convex platform for limiting the sliding distance of the limiting block of the inner core of the component along the third sliding groove of the inner core of the gun body.

[0016] In this application, when performing the first-level fixation, a first convex platform is added to make the connection between the inner core of the component and the inner core of the gun body more stable and the clamping more accurate.

[0017] In a further technical solution, the proximal end of the inner core of the component is provided with a second convex platform, and the distance between the second convex platform and the first convex platform forms the second sliding groove.

[0018] In this application, by forming a second sliding groove from the gap between two convex platforms at the proximal end of the inner core of the component, the process difficulty is reduced and the cost is saved.

[0019] In a further technical solution, the proximal end of the second convex platform is provided with a chamfer for ensuring that the safety connection mechanism smoothly slides from the first sliding groove into the second sliding groove.

[0020] The chamfer of the present application is arc-shaped, which facilitates the safety connection mechanism to slide smoothly from the first sliding groove to the second sliding groove.

[0021] In a further technical solution, the safety connecting mechanism includes a connecting block and a dial knob, and the proximal end of the safety connecting rod is connected to the dial knob through the connecting block. By turning the dial knob, the safety connecting rod slides along the first slide groove to the proximal end of the inner core of the gun body; by pulling back the dial knob, the safety connecting rod slides along the first slide groove to the second slide groove proximal to the inner core of the component.

[0022] The present application adds a toggle knob to facilitate hand-held operation by the operator, making the secondary fixation of the safety connecting rod more stable and avoiding slippage. At the same time, the toggle knob can also facilitate the disassembly of the component and quickly separate the inner core of the component from the inner core of the gun body.

[0023] In a further technical solution, the safety connection mechanism also includes an elastic component, and the outer wall surface of the inner core of the gun body is provided with an elastic component groove for accommodating the elastic component. When the safety connection rod slides from the distal locking platform to the proximal locking platform, the elastic component is elastically deformed by the pushing action of the safety connection rod to store elastic force. When the safety connection rod slides from the proximal locking platform to the distal locking platform, the elastic component rebounds to release the elastic force, pushing the safety connection rod to slide.

[0024] The present application further adds an elastic component, and through the cooperation of the elastic component and the safety connecting rod, the gun body and the component are firmly connected, which is more stable during surgery, reduces surgical risks, and improves the success rate of surgery.

[0025] In a further technical solution, the elastic component groove is located in the first sliding groove, and a protrusion is provided at the proximal end of the elastic component groove to prevent the elastic component from popping out of the elastic component groove when elastic deformation occurs.

[0026] In a further technical solution, the elastic component is a spring or an elastic sheet.

[0027] After adopting such a design, the present invention has at least the following advantages:

[0028] (1) The present invention adopts a safety connection structure at the connection between the operating body and the component, so that the gun body and the component adopt a secondary fixed connection method, which is more stable during surgery and greatly reduces the risk of falling off.

[0029] (2) The present application adds a first boss during primary fixation, so that the inner core of the component is more stable and the clamping is more accurate when connected with the inner core of the gun body.

[0030] (3) The present application forms a second chute by providing a gap between two bosses at the proximal end of the component inner core, reducing the process difficulty and saving costs.

[0031] (4) The present application facilitates the handheld operation of the operator by adding a turning knob, making the secondary fixation of the safety connecting rod more stable, avoiding the occurrence of slippage events. At the same time, the turning knob can also facilitate the disassembly of the component, enabling the rapid separation of the component inner core and the gun body inner core.

[0032] (5) The structure of the present invention is simple, with good effects, low cost, and easy to implement in the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above is only an overview of the technical solution of the present invention. In order to be able to more clearly understand the technical means of the present invention, the following further detailed description of the present invention will be made in conjunction with the drawings and specific embodiments.

[0034] Figure 1 is a structural block diagram of a stapler according to an embodiment of the present invention;

[0035] Figure 2 is a schematic structural diagram of a component inner core according to an embodiment of the present invention;

[0036] Figure 3 is a schematic structural diagram of a gun body inner core according to an embodiment of the present invention;

[0037] Figure 4 is a schematic structural diagram of a safety connecting rod according to an embodiment of the present invention;

[0038] Figure 5 is a schematic diagram of the connection between a component inner core and a gun body inner core according to an embodiment of the present invention;

[0039] Figure 6 is a schematic diagram of the cooperation between a limiting platform of a component inner core and a limiting groove of a barrel inner core according to an embodiment of the present invention;

[0040] Figure 7 is a schematic structural diagram of a safety connection mechanism according to an embodiment of the present invention;

[0041] Among them, 1 is a component sleeve, 11 is a component inner core, 111 is a limiting block, 112 is a first boss, 113 is a second boss, 2 is a gun body sleeve, 21 is a gun body inner core, 211 is a limiting groove, 22 is a safety connecting rod, 221 is a positioning protrusion, 23 is a connecting block, 24 is a turning knob, and 25 is an elastic member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0043] In this article, "upper", "lower", etc. are only used to represent the relative positional relationship between relevant parts, rather than limiting the absolute positions of these relevant parts.

[0044] Unless otherwise specified, the numerical ranges in this article include not only the entire range within its two endpoints, but also several sub-ranges included therein.

[0045] One end of each of the following components close to the operator is defined as the proximal end, and the end far from the operator is defined as the distal end. The expressions of the proximal end and the distal end are only used to make the description simple and clear, and should not be construed as any limitation to the present invention.

[0046] As Figures 1 to 7 shown, a stapler is provided, which includes a component sleeve 1 and a gun body sleeve 2. Two axially symmetric limit blocks 111 are provided at the proximal end of the component inner core 11 sleeved by the component sleeve 1, and two axially symmetric limit grooves 211 are correspondingly provided at the distal end of the gun body inner core 21 sleeved by the gun body sleeve 2. The proximal end of the component inner core 11 and the distal end of the gun body inner core 21 are clamped and connected through the limit blocks 111 and the limit grooves 211 to form a primary fixation; the gun body inner core 21 further includes a safety connection mechanism, and the safety connection mechanism is located on the outer wall surface of the gun body inner core 21. The safety connection mechanism can slide at least partially along the outer surface of the gun body inner core 21 to the outer surface of the component inner core 11 for locking the component inner core 11 and the gun body inner core 21 to form a secondary fixation.

[0047] Here, a part of the distal end of the safety connection mechanism slides into the component inner core 11, and the component inner core 11 and the gun body inner core 21 can be fixedly connected.

[0048] Specifically, a first chute is provided on the outer wall surface of the gun body inner core 21. The first chute extends along the axial direction of the gun body inner core 21 from the distal end of the gun body inner core 21 to the proximal end of the gun body inner core 21. The first chute serves as a slideway for the safety connection mechanism, and the safety connection structure can slide in the first chute. A second chute is provided on the outer wall surface of the component inner core 11. The second chute extends along the axial direction of the component inner core 11 from the proximal end of the component inner core 11 to its distal end. The second chute is a slideway for the safety connection mechanism on the outer surface of the component inner core. The safety connection mechanism can slide along the first chute and the second chute for locking and unlocking the component inner core 11 and the gun body inner core 21.

[0049] Here, the limiting groove 211 of the inner core 21 of the gun body is hollow, facilitating the clamping of the limiting block 111.

[0050] In one embodiment, the safety connection mechanism includes a safety connecting rod 22. On the upper surface of the outer wall of the inner core 21 of the gun body, a first chute is provided with a distal limiting platform and a proximal limiting platform. A limiting space for accommodating the safety connecting rod 22 is formed between the distal limiting platform and the proximal limiting platform, thereby controlling the sliding distance of the safety connecting rod 22 in the first chute.

[0051] Here, the sliding distance of the safety connecting rod 22 in the first chute is the stroke of entering the second chute. In the solution of the present application, as long as the proximal end of the locking component inner core and the distal end of the inner core of the gun body are stably fixed and locked by the safety connecting rod 22, the stroke of the second chute does not need to be set too long, which can leave enough space for other components and facilitate the process implementation.

[0052] In one embodiment, a hollow rectangular window is provided at the distal end of the gun body sleeve 2. A positioning protrusion 221 is provided at the distal end of the safety connecting rod 22. When the safety connecting rod 22 slides from the distal end to the proximal end along the first chute, the positioning protrusion 221 is used to abut against the rectangular window of the gun body sleeve 2 to limit the continuous sliding of the safety connecting rod 22.

[0053] In one embodiment, a third chute is provided on the inner wall surface of the inner core 21 of the gun body. The third chute is located on the circumferential side of the limiting groove 211 and extends from the proximal end of the inner core 21 of the gun body towards the limiting groove 211. The proximal end of the third chute and the proximal end of the limiting groove 211 are on the same circumferential line, so that when the limiting block 111 of the component inner core 11 slides to the end along the third chute, the component inner core 11 is circumferentially rotated to make the limiting block 111 enter the limiting groove 211, thereby enabling the component inner core 11 to be clamped with the inner core 21 of the gun body.

[0054] The component inner core 11 is circumferentially rotated to make the two limiting blocks 111 enter the two limiting grooves 211 respectively. At this time, the first chute is aligned with the second chute, and the safety connecting rod 22 can slide along the first chute and the second chute.

[0055] Here, the limiting groove 211 of the inner core 21 of the gun body can be one or more, and the corresponding limiting blocks 111 of the component inner core 11 can also be one or more, as long as the two can be matched and clamped.

[0056] In one embodiment, the limiting grooves 211 of the inner core 21 of the gun body are two axially symmetric ones, and the corresponding limiting blocks 111 of the component inner core 11 are also two axially symmetric ones.

[0057] In one embodiment, the limiting groove 211 of the gun body inner core 21 is hollow. When the gun body inner core 21 is connected to the component inner core 11, the limiting block 111 of the component inner core 11 can be snapped into the limiting groove 211. Here, the limiting block 111 only needs to be able to be snapped into the limiting groove 211.

[0058] In one embodiment, the component inner core 11 is rotated circumferentially so that the limit block 111 enters the limit groove 211, thereby enabling the component inner core 11 to be clamped with the gun body inner core 21. At this time, the first slide groove on the upper surface of the outer wall of the gun body core 21 and the second slide groove on the upper surface of the outer wall of the component inner core 11 form a track for the safety connecting rod 22 to connect and slide. The distal end of the safety connecting rod 22 slides from the first slide groove to the second slide groove, completing the locking of the component inner core 11 and the gun body core 21.

[0059] In one embodiment, a first boss 112 is provided at the proximal end of the component inner core 11 to prevent the limiting block 11 of the component inner core 11 from continuing to slide along the third sliding groove of the inner core 21 of the gun body.

[0060] In one embodiment, a second boss 113 is disposed at the proximal end of the component inner core 11 , and the distance between the second boss 113 and the first boss 112 forms a second slide groove.

[0061] In one embodiment, a chamfer is provided at the proximal end of the second boss 112 to ensure that the safety connecting rod 22 slides smoothly from the first sliding groove to the second sliding groove.

[0062] The chamfer of the present application is arc-shaped, so that the safety connecting rod 22 can slide smoothly from the first slide groove to the second slide groove at the joint between the first slide groove and the second slide groove.

[0063] In a further technical solution, the safety connecting mechanism includes a connecting block 23 and a dial knob 24. The proximal end of the safety connecting rod 22 is connected to the dial knob 24 through the connecting block 23. Specifically, the proximal end of the safety connecting rod 22 is provided with a through hole, one end of the connecting block 23 is connected to the safety connecting rod 22 through the through hole, and the other end of the connecting block 23 is connected to one end of the dial knob 24. The safety connecting rod 22 is slid by tossing the dial knob 24.

[0064] Specifically, by turning the dial knob 23, the safety connecting rod 22 slides along the first slide groove to the proximal end of the inner core 21 of the gun body, and the secondary fixing of the component inner core 11 and the gun body core 21 is unlocked; by turning the dial knob 23 back, the safety connecting rod 22 slides along the first slide groove part to the second slide groove proximal end of the component inner core 11, and the secondary fixing of the component inner core and the gun body core is locked.

[0065] In a further technical solution, the insurance connection mechanism further includes an elastic member 25. An elastic member groove for accommodating the elastic member 25 is provided on the outer wall surface of the inner core 21 of the gun body. When the insurance connecting rod 22 slides from the distal clamping station to the proximal clamping station, the elastic member 25 is elastically deformed under the pushing action of the insurance connecting rod 22 to store elastic force. When the insurance connecting rod 22 slides from the proximal clamping station to the distal clamping station, the elastic member 25 rebounds to release the elastic force and push the insurance connecting rod 22 to slide.

[0066] In a further technical solution, the elastic member groove is located in the first chute. A protrusion is provided at the proximal end of the elastic member groove to prevent the elastic member 25 from popping out of the elastic member groove when it is elastically deformed.

[0067] In a further technical solution, the elastic member 25 is a spring or an elastic sheet.

[0068] Specifically, the spring is located in the elastic member groove. The height of the elastic member groove is less than the outer diameter of the spring. A strip-shaped opening groove is provided on the upper surface of the insurance connecting rod 22. When the insurance connecting rod 22 slides proximally, the spring is compressed and elastically deformed, and the spring stores energy; when the insurance connecting rod 22 slides distally, the spring restores its elastic force and starts to release energy, giving a thrust to the insurance connecting rod 22, so that a part of the distal end of the insurance connecting rod 22 quickly slides into the second chute to complete the locking.

[0069] Further, a small protrusion is provided at the distal end of the strip-shaped opening groove of the insurance connecting rod 22. When the insurance connecting rod 22 pushes the spring to elastically deform, the small protrusion is pushed into the inner ring of the spring, which can prevent the spring from jumping up.

[0070] The locking and unlocking processes of the stapler in this application are as follows:

[0071] The insurance connecting rod 22 and the spring are respectively placed in the corresponding chutes of the inner core 21 of the gun body. The gun body sleeve 2 sleeves the inner core 21 of the gun body. The component sleeve 1 sleeves the component inner core 11. Alignment marks are respectively provided on the component sleeve 1 and the gun body sleeve 2. The proximal end of the connecting insurance rod 22 is connected to the dial 24 through the connecting block 23;

[0072] When the knob 24 is toggled in the proximal direction, the knob 24 drives the safety connecting rod 22 to move proximally through the connecting block 23. The spring is elastically deformed under the pushing action of the safety connecting rod 22 to store energy. There is a positioning protrusion 221 at the distal end of the safety connecting rod 22, and a rectangular window is correspondingly provided at the distal end of the gun body sleeve 2. When the knob 24 is toggled to drive the safety connecting rod 22 to slide proximally, the positioning protrusion 221 at the distal end of the safety connecting rod 22 snaps into the rectangular window at the distal end of the gun body sleeve 2. There is a mark on the upper surface of the component inner core 11, and a corresponding mark is also provided on the upper surface of the distal end of the gun body inner core 21. After aligning the mark on the component inner core 11 with the mark on the gun body inner core 21, the two limiting blocks 111 of the component inner core 11 slide into the gun body inner core 21 along the third chute on the inner wall surface of the gun body inner core 21. When it slides to the end of the third chute and stops sliding, then the component inner core 11 is rotated circumferentially to align the first chute with the second chute. The proximal limiting block 111 of the component inner core 11 stops sliding under the influence of the distal limiting groove 211 of the gun body inner core 21, completing the primary fixation.

[0073] When the knob 24 is toggled back, under the reverse elastic force of the spring, a part of the distal end of the safety connecting rod 22 extends into the second chute of the component inner core 11 for locking, completing the secondary fixation.

[0074] When unlocking is required, the knob 24 is toggled to move the safety connecting rod 22 out of the second chute of the component inner core 11, and the component sleeve is rotated circumferentially in the reverse direction, then the component can be unloaded to complete the unlocking.

[0075] Those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of the present invention and include known common knowledge or conventional technical means in the technical field not disclosed in the present invention. The specification and examples are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0076] It should be understood that the present invention is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A stapler, characterized in that, include: An inner core of a component and an inner core of a gun body, wherein the proximal end of the inner core of the component is provided with two axially symmetrical limit blocks, and the distal end of the inner core of the gun body is provided with two corresponding axially symmetrical limit grooves, and the proximal end of the inner core of the component and the distal end of the inner core of the gun body are connected by clamping through the limit blocks and the limit grooves to form a primary fixation; the inner core of the gun body includes a safety connection mechanism, which is located on the outer wall surface of the inner core of the gun body, and the safety connection mechanism can slide at least partially along the outer surface of the inner core of the gun body to the outer surface of the inner core of the component, so as to lock the inner core of the component and the inner core of the gun body to form a secondary fixation; A first sliding groove is provided on the outer wall surface of the inner core of the gun body, and a second sliding groove is provided on the outer wall surface of the proximal end of the inner core of the component. The safety connection mechanism can slide along the first sliding groove and the second sliding groove to lock and unlock the inner core of the component and the inner core of the gun body; The safety connection mechanism comprises a safety connection rod, and the first slide groove on the upper surface of the inner core of the gun body is provided with a distal stop platform and a proximal stop platform for controlling the sliding stroke of the safety connection rod in the first slide groove; A positioning protrusion is arranged at the distal end of the safety connecting rod.

2. The stapler according to claim 1, wherein The inner wall of the core of the gun body is respectively provided with a third slide groove of the two limit blocks, the proximal end of the third slide groove is connected to the proximal end of the limit groove and is on the same circumferential line, the limit block of the component inner core can slide into the gun body core along the third slide groove of the gun body core, and the component inner core is rotated circumferentially, the two limit blocks can respectively enter the corresponding limit grooves, and at the same time, the first slide groove is axially aligned with the second slide groove, and the safety connecting rod can slide along the first slide groove and the second slide groove.

3. The stapler according to claim 2, wherein, A first boss is disposed at the proximal end of the component inner core, which is used to limit the sliding distance of the limit block of the component inner core along the third sliding groove of the core of the gun body.

4. The stapler according to claim 3, wherein, A second boss is disposed at the proximal end of the inner core of the component, and the distance between the second boss and the first boss forms the second slide groove.

5. The stapler according to claim 4, characterized in that, A chamfer is provided at the proximal end of the second boss to ensure that the safety connection mechanism slides smoothly from the first sliding groove into the second sliding groove.

6. The stapler according to claim 1, wherein The safety connection mechanism includes a connecting block and a dial knob, and the proximal end of the safety connecting rod is connected to the dial knob through the connecting block. By turning the dial knob, the safety connecting rod slides along the first slide groove to the proximal end of the core of the gun body; by pulling back the dial knob, the safety connecting rod slides along the first slide groove to the second slide groove proximal to the inner core of the component.

7. The stapler according to claim 6, wherein The safety connection mechanism also includes an elastic component. An elastic component groove for accommodating the elastic component is provided on the outer wall surface of the inner core of the gun body. When the safety connection rod slides from the distal locking platform to the proximal locking platform, the elastic component is elastically deformed and stores elastic force due to the pushing action of the safety connection rod. When the safety connection rod slides from the proximal locking platform to the distal locking platform, the elastic component rebounds and releases the elastic force to push the safety connection rod to slide.

8. The stapler according to claim 7, characterized in that, The elastic component groove is located within the first sliding groove, and a protrusion is provided at the proximal end of the elastic component groove for preventing the elastic component from popping out of the elastic component groove when undergoing elastic deformation.

9. The stapler according to claim 8, wherein The elastic component is a spring or an elastic sheet.

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