Nail pushing sliding block and anastomat
By incorporating guide ribs and a beveled structure into the pusher slider, the problem of uneven sliding was solved, ensuring the stability and rapid retraction of the cutting blade, reducing surgical risks, and improving surgical efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-03-27
AI Technical Summary
Existing pusher sliders do not slide smoothly when handling larger and thicker tissues, which can easily cause the cutting blade to deviate or get stuck, increasing surgical risks.
Design a pusher slider equipped with guide ribs and a bevel structure to ensure sliding stability and rapid retraction. This includes the guide ribs making close contact with the staple cartridge body, the cutting bevel increasing the cutting force, and the retraction bevel reducing friction.
This technology enables stable sliding and rapid retraction of the pusher slider, reducing surgical risks and improving surgical efficiency and safety.
Smart Images
Figure CN224039245U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, especially a kind of push nail slider and anastomat. BACKGROUND
[0002] Anastomat is the device used in medicine to replace manual suture, and the main working principle is to use titanium nail and cutting knife to anastomose and cut off tissue, and the anastomosis principle is similar to stapler.
[0003] Push nail slider is the key component of anastomat: when anastomat works, push nail slider is pushed in, drives push nail sheet to move in nail magazine hole, and then pushes anastomat to reach nail seat, to achieve the suture effect of tissue.
[0004] For different size and thickness of tissue, the structure of push nail slider often needs to be adjusted accordingly.For example, in the operation such as gastric cutting, larger and thicker tissue often needs to be handled, but the existing push nail slider can not fully adapt to the handling requirements of larger and thicker tissue.
[0005] As shown in Figure 1 The commonly used push nail slider of anastomat on the market is as follows:
[0006] Guide rib is generally arranged at the upper end of main body, and can rub against the inner wall of cutting knife withdrawal groove of nail magazine main body, especially in the process of sliding back to pull back cutting knife, the friction can hinder the smoothness of sliding, and even cause cutting knife to be inclined or jammed.
[0007] In addition, the end face of the back side of push nail slider is generally vertical, which increases friction and resistance, which not only affects the back speed, but also can increase the risk of operation. INVENTION CONTENTS
[0008] The technical problem solved by the utility model is to provide a push nail slider, which can realize stable sliding, avoid the inclination or jamming of cutting knife during cutting process, promote the backward pulling of cutting knife, realize quick back operation, ensure the smooth operation, and significantly reduce the risk of postoperative complications.
[0009] To solve the above technical problems, one technical scheme of the utility model is to provide a push nail slider arranged in nail magazine main body and capable of sliding relative to nail magazine main body, comprising: sliding part and push part arranged on both sides of sliding part.
[0010] The sliding part is equipped with a guide rib to enable the sliding part to realize linear sliding in the cutting knife withdrawal groove of nail magazine main body, and the push part can move in the nail groove of nail magazine main body to push the push nail sheet in the nail groove to move.
[0011] The push part is provided with:
[0012] a cutting end having a cutting slope for interacting with the pusher sheet during advancement;
[0013] a retraction end having a retraction slope for facilitating pulling back the cutting knife to achieve a quick retraction operation.
[0014] In a preferred embodiment of the present application, the pushing part is symmetrically arranged around the sliding part.
[0015] In a preferred embodiment of the present application, the length of the bottom end face of the pusher sliding block is 16-22 mm.
[0016] In a preferred embodiment of the present application, the guide rib is arranged at the bottom of the sliding part and protrudes outward from the bottom end face of the sliding part.
[0017] In a preferred embodiment of the present application, the proximal end of the guide rib has a guide surface which is arranged obliquely, and the distal end of the guide rib has a support surface which is arranged vertically.
[0018] In a preferred embodiment of the present application, the cutting slope extends from the top of the cutting end to the bottom of the cutting end, and the cutting slope has at least three different slope angles during the extension.
[0019] In a preferred embodiment of the present application, the three slope angles gradually increase from the top of the cutting end to the bottom of the cutting end.
[0020] In a preferred embodiment of the present application, the retraction slope extends from the top of the retraction end to the bottom of the retraction end, and the retraction slope has a consistent slope angle during the extension.
[0021] To solve the above technical problems, the present application adopts one technical scheme: to provide an anastomat comprising the pusher sliding block.
[0022] The present application has the following beneficial effects: the bottom guide rib can tightly contact the inner wall of the knife withdrawal groove, ensure the stable sliding of the cutting knife, prevent deflection or jamming, reduce the risk of surgery, increase the retraction slope to reduce the frictional resistance, facilitate the quick retraction of the cutting knife, make the process smooth and efficient, reduce the risk again, improve the efficiency of surgery, jointly ensure the smooth progress of surgery, and significantly reduce the risk of postoperative complications. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without creative labor.
[0024] Figure 1 is a structural schematic view of a preferred embodiment of the push pin sliding block in the prior art;
[0025] Figure 2 is a structural schematic view of a preferred embodiment of the push pin sliding block in the present application;
[0026] Figure 3 is a structural schematic view of another preferred embodiment of the push pin sliding block in the present application;
[0027] Figure 4 is a front view of Figure 2 ;
[0028] Figure 5 is a top view of Figure 2 ;
[0029] The marks of the components in the drawings are as follows:
[0030] 1, sliding part, 11, bottom end face, 2, pushing part, 21, cutting inclined surface, 22, back-off inclined surface,
[0031] 3, guide rib, 31, guide surface, 32, vertical surface. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. Embodiment 1:
[0034] Please refer to Figures 2-5A push nail slider is arranged in the nail cartridge body and can slide relative to the nail cartridge body, comprising a sliding part 1 and a pushing part 2.
[0035] The pushing part 2 is arranged on both sides of the sliding part 1, and the pushing part 2 is symmetrically arranged with the sliding part 1 as the center. The symmetric arrangement can ensure that the force is uniform when the push nail slider moves, avoiding the occurrence of skewing or jamming, and can uniformly push the anastomosis nails in the nail cartridge, thereby realizing stable cutting and anastomosis effect.
[0036] The length of the bottom end face of the push nail slider of the embodiment is 16-22mm, which can adapt to such cutting anastomosis devices for larger and thicker tissues. In actual application, this length range can be adjusted according to the specific nail cartridge body design and use requirements.
[0037] Specifically, first is the sliding part 1, which is equipped with a guide rib 3 to enable the sliding part 1 to slide linearly in the tool withdrawal groove of the nail cartridge body.
[0038] Preferably, the guide rib 1 is arranged at the bottom of the sliding part 1, facilitating the backward pulling of the cutting knife, and is outwardly convexly arranged towards the bottom end face of the sliding part 1.
[0039] The guide rib 3 is outwardly convexly arranged on the bottom end face 11 of the sliding part 1, and can be in full and close contact with the inner wall of the tool withdrawal groove of the nail cartridge body. During the process of sliding the sliding part 1 backward to pull back the cutting knife, it can ensure that the sliding part moves stably along a straight line, thereby improving the sliding stability and preventing the cutting knife from skewing or jamming during cutting.
[0040] Further, the guide rib 3 has a guide surface 31 at the proximal end, and the guide surface 31 is inclinedly arranged; the guide rib 3 has a support surface 32 at the distal end, and the support surface 32 is vertically arranged.
[0041] The inclinedly arranged guide surface 31 can guide the sliding process, which helps to realize smooth and accurate sliding, and the vertically arranged support surface 32 can ensure stable positioning and supporting effect of the guide rib and the tool withdrawal groove.
[0042] Secondly, the pushing part 2 can move in the nail groove of the nail cartridge body to push the nail pushing piece in the nail groove to move, and the pushing part comprises a cutting end and a retreat end.
[0043] The cutting end has a cutting inclined surface 21 to interact with the nail pushing piece during pushing to realize the cutting function.
[0044] Preferably, the cutting slope 21 extends from the top of the cutting end to the bottom of the cutting end, and the cutting slope 21 presents at least three different slope angles during the extension, and the three slope angles gradually increase from the top of the cutting end to the bottom of the cutting end, which helps to gradually increase the cutting force during the cutting process, and ensures the stability and accuracy of the cutting.
[0045] The retreat end is provided with a retreat slope 22 for facilitating the backward pulling of the cutting knife to realize the quick retreat operation, and the retreat slope can reduce the friction and resistance during the retreat process.
[0046] Preferably, the retreat slope 22 extends from the top of the retreat end to the bottom of the retreat end, and the retreat slope maintains a consistent slope angle during the extension, which ensures the stability of the retreat process, makes the retreat process more smooth and efficient, reduces the surgical risk, and improves the surgical efficiency.
[0047] The action process of the push nail slider is as follows:
[0048] The cutting process is as follows:
[0049] When the anastomat is activated, the push nail slider moves along the longitudinal axis direction of the nail cartridge body under the driving of the power source, the guide rib 3 of the sliding part 1 is tightly matched with the inner wall of the knife withdrawal groove, the cutting end of the pushing part 2 is in contact with the push nail sheet, and the cutting force is gradually increased through the cutting slope, so that the gastric tissue is cut;
[0050] The retreat process is as follows:
[0051] After the cutting is completed, the push nail slider quickly retreats under the driving of the power source, the retreat end of the pushing part 2 interacts with the cutting knife, and the cutting knife is promoted to quickly retreat through the retreat slope. Embodiment 2:
[0052] An anastomat, wherein the inside of the nail cartridge body of the anastomat is provided with the push nail slider, and the accurate and stable sliding cutting and the quick retreat operation can be realized through the push nail slider, the surgical risk is reduced, and better treatment effect is brought to the patient.
[0053] The push nail slider and the anastomat have the following beneficial effects:
[0054] The bottom guide rib can be in full and close contact with the inner wall of the knife withdrawal groove, the cutting knife can be stably pulled back and retreated in the rear direction, the cutting knife is prevented from being inclined or blocked during the retreat, and the surgical risk is reduced;
[0055] The cutting knife is promoted to quickly retreat through the retreat slope, the friction and resistance during the retreat process are reduced, the retreat process is more smooth and efficient, the surgical risk is reduced, and the surgical efficiency is improved;
[0056] Help to ensure the smooth progress of the operation, and reduce the risk of postoperative complications.
[0057] The above only describes the embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.
Claims
1. A pusher slider, disposed within a staple cartridge body and capable of sliding relative to the staple cartridge body, characterized in that, include: The sliding part and the pushing parts located on both sides of the sliding part: The sliding part is equipped with a guide rib so that the sliding part can slide linearly in the retraction groove of the staple cartridge body, and the pushing part can move in the staple groove of the staple cartridge body to push the pusher piece in the staple groove to move. The propulsion unit is provided with: The cutting end has a cutting bevel for interacting with the pusher plate during advancement; The retraction end has a retraction ramp to facilitate the backward pulling of the cutting blade, thereby enabling a rapid retraction operation.
2. The push pin slider according to claim 1, characterized in that, The length of the bottom end face of the push pin slider is 16-22mm.
3. The push pin slider according to claim 1, characterized in that, The pushing part is arranged symmetrically with the sliding part as the center.
4. The push pin slider according to claim 1, characterized in that, The guide rib is located at the bottom of the sliding part and protrudes outward toward the bottom end face of the sliding part.
5. The push pin slider according to claim 4, characterized in that, The guide rib has a guide surface at its proximal end, which is inclined; the guide rib has a support surface at its distal end, which is vertical.
6. The push pin slider according to claim 1, characterized in that, The cutting bevel extends from the top of the cutting end to the bottom of the cutting end, and the cutting bevel exhibits at least three different slope angles during the extension process.
7. The push pin slider according to claim 6, characterized in that, The three slope angles gradually increase from the top of the cutting end towards the bottom of the cutting end.
8. The push pin slider according to claim 1, characterized in that, The retraction ramp extends from the top of the retraction end to the bottom of the retraction end, and the retraction ramp maintains a consistent slope angle during the extension process.
9. A stapler, characterized in that, Includes the push pin slider as described in any one of claims 1-8.