Safety insured stapler execution end and stapler

Abstract

The utility model discloses a kind of safety insurance's anastomat execution end and anastomat, execution end includes nail bin subassembly, jaw subassembly and cutting knife, nail bin subassembly includes and push nail slider, jaw subassembly includes nail box base and stop nail seat, nail bin subassembly is installed in nail box base, cutting knife is slidably arranged between nail box base and stop nail seat;Nail box base bottom is equipped with a safety step, nail box base tail end is connected with a lower connecting piece, at least one limit boss is equipped with in lower connecting piece inner side, for drive cutting knife and safety step form movement interference, make anastomat execution end be in safe state. Through the above-mentioned mode, the utility model can be through the linkage of limit boss and safety step, solve the mis-cutting of traditional anastomat due to no-load firing, realize automatic safety insurance, optimize operation process, improve reliability, with universality.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a stapler actuator with safety protection and a stapler. Background Technology

[0002] As a key instrument in surgical procedures, the precision of the cutting and anastomosis at the execution end of the stapler directly affects the safety and success rate of the surgery.

[0003] In standard operating procedures, after completing a suturing and cutting operation, the operator must reset the stapler and replace the staple cartridge assembly before proceeding to the next operation. However, in actual surgery, there is a risk of operator error such as repeatedly firing the staples without replacing the already fired cartridge, or firing the staples without installing the cartridge. Such operational errors may lead to serious consequences such as deviation from the cutting path, tissue damage, and instrument structural damage, affecting the surgical progress and threatening patient safety.

[0004] In the prior art, when the staple cartridge assembly is not installed, the cutting blade of the stapler is prone to deviating from the preset path due to the lack of effective guidance and support, which may lead to tissue miscutting or failure of the anastomosis function. This structural defect means that the existing products cannot provide effective protection in case of human error, resulting in insufficient safety protection.

[0005] Therefore, there is an urgent need for a safety mechanism that can be automatically triggered and effectively intervened in case of misoperation, so as to fundamentally solve the risk of accidental cutting caused by no-load firing of traditional staplers. Utility Model Content

[0006] The main technical problem solved by this utility model is to provide a stapler actuator end and stapler with safety protection, which can solve the problem of accidental cutting caused by no-load firing of traditional staplers by the linkage of the limiting boss and the safety step, realize automatic safety protection, optimize the operation process, and improve reliability and versatility.

[0007] To solve the above-mentioned technical problems, the present invention provides a safety-protected stapler actuator, comprising: a staple cartridge assembly, a jaw assembly, and a cutting blade. The staple cartridge assembly includes a staple cartridge body and a staple pusher slider that slides relative to the staple cartridge body. The jaw assembly includes a staple cartridge base and a staple abutment. The staple cartridge assembly is installed inside the staple cartridge base, and the cutting blade is slidably disposed between the staple cartridge base and the staple abutment. A safety step is provided at the bottom of the staple cartridge base, and a lower connector is connected to the tail end of the staple cartridge base. At least one limiting boss is provided on the inner side of the lower connector to drive the cutting blade to form a motion interference with the safety step when the cutting blade deviates from the set path, thereby ensuring that the stapler actuator is in a safe state.

[0008] This is used to drive the cutting blade to create motion interference with the safety step, so that the actuator end is in a safe state.

[0009] In a preferred embodiment of the present invention, the safety step is formed on the inner wall of the blade groove of the nail box base, and the step surface faces the cutting blade.

[0010] In a preferred embodiment of this utility model, the step surface of the safety step is a vertical plane or an inclined plane.

[0011] In a preferred embodiment of the present invention, the height of the safety step is set such that when the cutting blade deviates from the set path, the lower edge of its blade body can be stopped by the safety step.

[0012] In a preferred embodiment of this utility model, the limiting boss and the lower connecting member are integrally formed.

[0013] In a preferred embodiment of this utility model, there are two limiting bosses, and the lower connector has a connecting groove in the middle that is adapted to the cutting blade body. The two limiting bosses are diagonally distributed on the two inner sidewalls of the connecting groove.

[0014] In a preferred embodiment of the present invention, the limiting boss has a guide slope inclined to the forward direction of the cutting blade.

[0015] In a preferred embodiment of this utility model, the limiting boss is a cylindrical platform, a square column, or a wedge-shaped block structure.

[0016] In a preferred embodiment of the present invention, the staple cartridge body is provided with a guide groove, the staple pusher slider is disposed in the guide groove for pushing the staple pusher, and at least one wall surface of the guide groove is provided with an arc protrusion extending along the firing direction.

[0017] In a preferred embodiment of the present invention, the pusher slider includes a base, a guide rib extending upward perpendicular to the base, and pusher pieces arranged on both sides of the guide rib. The corresponding wall surface of the guide rib is provided with an arc groove that slides in cooperation with the arc protrusion.

[0018] In a preferred embodiment of this utility model, the base end of the push pin slider is provided with a chamfered corner to form a guide.

[0019] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide a stapler, including the stapler execution end with safety insurance.

[0020] The beneficial effects of this utility model are: It can achieve automatic safety protection: through the linkage between the limiting boss and the safety step, it can automatically determine whether the staple cartridge component is installed, prevent no-load firing, avoid the risk of accidental cutting, and ensure the safety of surgical operation; Optimized operation process: The triggering and failure of the insurance mechanism does not require manual intervention, but is automatically switched by the installation status of the nail storage component, simplifying the operation process; Wide applicability: It can be adapted to different specifications of staple cartridge components, improving the versatility of the stapler. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of a preferred embodiment of the stapler actuator with safety protection according to this utility model; Figure 2 This is a schematic diagram of a preferred embodiment of the staple cartridge assembly of this utility model; Figure 3 This is a structural diagram showing the assembly relationship between the cutting blade and the lower connecting part of this utility model; Figure 4 This is a schematic diagram of a preferred embodiment of the safety step on the nail box base of this utility model; Figure 5 This is a schematic diagram of a preferred embodiment of the lower connector with a limiting boss provided in this utility model; Figure 6 This is a schematic diagram of a preferred embodiment of the push-pin slider of this utility model; The components in the attached diagram are labeled as follows: 100. Staple cartridge assembly; 110. Staple cartridge body; 120. Staple pusher slider; 121. Base; 122. Guide rib; 123. Staple pusher assembly; 124. Arc groove; 125. Chamfer; 130. Guide groove; 131. Arc protrusion. 200. Jaw assembly; 210. Nail cartridge base; 220. Nail anchor; 300. Cutting blade; 400. Safety step; 410. Step surface; 500. Lower connector; 510. Connecting groove; 600. Limiting boss; 610. Guide ramp. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] This utility model relates to a preferred embodiment of a stapler actuator with a safety guarantee.

[0025] Please see Figures 1 to 6 The stapler actuator with safety features includes: a staple cartridge assembly 100, a jaw assembly 200, and a cutting blade 300.

[0026] The staple cartridge assembly 100 includes a staple cartridge body 110 and a staple pusher slider 120, wherein the staple pusher slider 120 can slide relative to the staple cartridge body 110 along a preset path to push the staple pusher during firing, thereby completing tissue suturing.

[0027] The staple cartridge body 110 is provided with a guide groove 130, and the staple pusher slider 120 is installed in the guide groove 130. In order to further optimize the motion guidance performance, at least one wall surface of the guide groove 130 is provided with an arc protrusion 131 extending in the firing direction.

[0028] Accordingly, the pusher slider 120 includes a base 121, a guide rib plate 122 extending upward perpendicular to the base 121, and pusher plate assemblies 123 disposed on both sides of the guide rib plate 122.

[0029] The corresponding wall surface of the guide rib plate 122 is provided with an arc groove 124 that slides with the arc protrusion 140. Through the sliding engagement between the arc protrusion 131 and the arc groove 124, the guiding friction can be reduced, ensuring the smooth movement of the push pin slider 120.

[0030] In a preferred embodiment, the two opposite walls of the guide groove 130 are provided with arc protrusions 140 extending in the firing direction, and the two corresponding walls of the guide rib plate 122 are also provided with arc grooves 124 that slide in cooperation with the arc protrusions 140, forming a double-sided symmetrical guide structure.

[0031] Furthermore, the base 121 of the pusher slider 120 is provided with a chamfer 125 at the tail end. The chamfer 125 can play a centering and guiding role in the initial stage to ensure smooth installation of the pusher slider 120. On the other hand, it can guide the running direction of the cutting blade when firing.

[0032] The jaw assembly 200 includes a nail cartridge base 210 and a nail abutment 220. The nail cartridge assembly 100 is installed inside the nail cartridge base 210 to enable quick replacement and maintenance of the nail cartridge assembly 100. The cutting blade 300 is slidably disposed between the nail cartridge base 210 and the nail abutment 220 to ensure stable execution of the cutting action.

[0033] Based on the above structure, this utility model provides a safety protection structure that can prevent accidental cutting at the execution end of the stapler. The safety protection structure includes a safety step 400 on the staple cartridge base 210 and a limiting boss 600 on the lower connector 500 at the tail end of the staple cartridge base 210.

[0034] In detail, firstly, there is a safety step 400, which is located at the bottom of the nail magazine base 210. This safety step 400 is integrally formed on the inner wall of the blade groove of the nail magazine base 210, with its step surface 410 facing the cutting blade 300. The step surface 410 can be set as a vertical plane or an inclined plane, and its height is preset so that when the cutting blade 300 deviates from the set path, the lower edge of the blade can abut against the step surface 410 of the safety step 400, thereby directly restricting the cutting blade from continuing to move and effectively avoiding safety hazards caused by operational deviations.

[0035] Secondly, there is a lower connector 500 and a limiting boss 600. The tail end of the staple box base 210 is connected to a lower connector 500. The inner side of the lower connector 500 is provided with at least one limiting boss 600. The limiting boss 600 is configured to contact the blade body of the cutting blade 300 when the cutting blade 300 deviates from the set path, so as to drive the lower edge of the blade body of the cutting blade 300 to form motion interference with the safety step 400, so that the execution end of the stapler is in a safe state and to prevent accidental operation from triggering the cutting action.

[0036] Furthermore, the limiting boss 600 and the lower connector 500 are integrally formed, which improves the structural stability.

[0037] In a preferred embodiment, there are two limiting bosses 600. The lower connector 500 has a connecting groove 510 in the middle that is adapted to the blade body of the cutting blade 300. The two limiting bosses 600 are diagonally distributed on the two inner sidewalls of the connecting groove 510, which can ensure bidirectional limiting of the cutting blade and improve the reliability of offset guidance.

[0038] Meanwhile, the limiting boss 600 is provided with a guide slope 610 for the forward direction of the inclined cutting blade, which facilitates assembly and unlocking operations; the limiting boss can be selected as a cylindrical platform, square column or wedge block structure to adapt to different assembly requirements.

[0039] When the staple cartridge assembly 100 is not installed on the staple cartridge base 210: In the initial state, the stapler begins to close, and the cutting blade 300 moves forward. At this time, there is no staple cartridge assembly 100 in the staple cartridge base 210, so there is no staple pusher slider 120 to guide the front end of the cutting blade 300. When the cutting blade 300 advances to the tail end of the nail cartridge base 210, it enters the connecting groove 510 of the lower connector 500. Due to the presence of two diagonally distributed limiting bosses 600 in the groove, the cutting blade 300 will contact the limiting bosses 600. The guide slope 610 on the limiting bosses 600, which is inclined towards the direction of the cutting blade's advance, will cause the cutting blade to deviate from the set path. As the cutting blade 300 continues to advance, it will be stopped by the step surface 410 of the safety step 400 on the inner wall of the blade groove of the nail cartridge base 210. The safety will be activated, and the jaw assembly can close. The cutting blade 300 can move forward a short distance, but it will not reach the nail ejection position of the nail pusher slider 120.

[0040] When the staple cartridge assembly 100 is installed on the staple cartridge base 210: In the initial state, the stapler begins to close, and the cutter 300 moves forward. At this time, the staple cartridge assembly 100 is installed in the staple cartridge base 210. The front end of the cutter 300 will first contact the push slider 120. Under the guidance of the push slider 120, the cutter 300 maintains the set path and no longer tilts. The cutter 300 avoids the safety step and moves forward smoothly. At this time, the safety mechanism is disabled.

[0041] This utility model also relates to a preferred embodiment of a stapler, the stapler including the above-mentioned stapler execution end with safety protection.

[0042] The advantages of this utility model, which features a safety-protected stapler actuator and a stapler itself, are: The linkage safety structure, which combines the limiting boss and the safety step, can prevent no-load firing, avoid the risk of accidental cutting, and ensure the safety of surgical operations. The triggering and failure of the insurance mechanism do not require manual intervention; they are automatically switched by the installation status of the nailing device component, simplifying the operation process. The push pin slider provides reliable guidance for the cutting blade, ensuring that the cutting blade moves along a preset path upon firing; It can be adapted to different specifications of staple cartridge components, improving the versatility of the stapler.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A stapler actuator with safety features, comprising: The device includes a staple cartridge assembly, a jaw assembly, and a cutting blade. The staple cartridge assembly comprises a staple cartridge body and a staple pusher slider that slides relative to the staple cartridge body. The jaw assembly includes a nail cartridge base and a nail anchor, the nail magazine assembly is installed inside the nail cartridge base, and the cutting blade is slidably disposed between the nail cartridge base and the nail anchor; The feature is that the bottom of the staple cartridge base is provided with a safety step, and the tail end of the staple cartridge base is connected to a lower connector. The inner side of the lower connector is provided with at least one limiting boss, which is used to drive the cutting blade to form a motion interference with the safety step when the cutting blade deviates from the set path, so that the execution end of the stapler is in a safe state.

2. The anastomosis device actuator with safety protection according to claim 1, characterized in that, The safety step is integrally formed on the inner wall of the blade groove of the nail box base, with its stepped surface facing the cutting blade.

3. The anastomosis device actuator with safety protection according to claim 2, characterized in that, The surface of the safety step is either a vertical plane or an inclined plane.

4. The anastomosis device actuator with safety protection according to claim 1, characterized in that, The height of the safety step is set such that when the cutting blade deviates from the set path, the lower edge of its blade body can be stopped by the safety step.

5. The anastomosis device actuator with safety protection according to claim 1, characterized in that, The limiting boss is integrally formed with the lower connecting member.

6. The anastomosis device actuator with safety protection according to claim 5, characterized in that, The number of limiting bosses is two, and the lower connector has a connecting groove in the middle that is adapted to the cutting blade body. The two limiting bosses are diagonally distributed on the two inner sidewalls of the connecting groove.

7. The anastomosis device actuator with safety protection according to claim 5, characterized in that, The limiting boss has a guide slope that is inclined to the forward direction of the cutting blade.

8. The anastomosis device actuator with safety protection according to claim 5, characterized in that, The limiting boss is a cylindrical platform, a square column, or a wedge-shaped block structure.

9. The anastomosis device actuator with safety protection according to claim 1, characterized in that, The staple cartridge body is provided with a guide groove, and the staple pusher slider is disposed in the guide groove for pushing the staple pusher. At least one wall surface of the guide groove is provided with an arc protrusion extending along the firing direction.

10. The anastomosis device actuator with safety protection according to claim 9, characterized in that, The pusher slider includes a base, a guide rib extending upward perpendicular to the base, and pusher pieces arranged on both sides of the guide rib. The corresponding wall surface of the guide rib is provided with an arc groove that slides in cooperation with the arc protrusion.

11. The anastomosis device actuator with safety protection according to claim 10, characterized in that, The base of the push pin slider has a chamfer at the tail end.

12. A stapler, characterized in that, Includes the anastomosis actuator end with safety protection as described in any one of claims 1-11.

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