阅读说明：本技术 应用于连发施夹钳的分步进给机构 (Step-by-step feeding mechanism applied to continuous hair clip applier ) 是由 唐文鹏 周鹏 贺丁丁 程磊 于 2021-11-19 设计创作，主要内容包括：本发明属于医疗器械技术领域,尤其涉及一种应用于连发施夹钳的分步进给机构。本发明针对现有技术中的组织夹在顶出施夹钳时会有一个大幅度的自动弹开动作,这给医护人员手术操作时带来不便的问题,提供一种应用于连发施夹钳的分步进给机构,包括钳头和一端连接在钳头上的钳头推杆,钳头推杆远离钳头的一端连接有推进结构,驱动手柄与推进结构之间还设有第一进给机构和第二进给机构,驱动手柄通过第一进给机构推动推进结构进入第一进给空间内,驱动手柄通过第二进给机构推动推进结构进入第二进给空间内。本发明可减小组织夹自动弹开动作的幅度,然后再利用第二进给机构缓缓夹持至完全闭合,故更适用于顶出时会自动弹开的组织夹。(The invention belongs to the technical field of medical instruments, and particularly relates to a step-by-step feeding mechanism applied to a continuous hair clip applier. Aiming at the problem that a tissue clamp in the prior art has a large-amplitude automatic flick-open action when the tissue clamp is ejected out to apply the clamp, which brings inconvenience to medical staff during operation, the invention provides a step-by-step feeding mechanism applied to a repeating clamp, which comprises a clamp head and a clamp head push rod, wherein one end of the clamp head push rod is connected to the clamp head, one end of the clamp head push rod, which is far away from the clamp head, is connected with a propelling structure, a first feeding mechanism and a second feeding mechanism are also arranged between a driving handle and the propelling structure, the driving handle pushes the propelling structure to enter a first feeding space through the first feeding mechanism, and the driving handle pushes the propelling structure to enter a second feeding space through the second feeding mechanism. The invention can reduce the amplitude of the automatic flicking action of the tissue clamp, and then utilizes the second feeding mechanism to slowly clamp the tissue clamp until the tissue clamp is completely closed, thereby being more suitable for the tissue clamp which can flick automatically when being ejected.)

1. The utility model provides a be applied to substep feed mechanism that clamp was executed to running hair, includes binding clip (1) and binding clip push rod (2) that one end is connected on binding clip (1), removes binding clip push rod (2) can drive binding clip (1) and open or press from both sides tightly its characterized in that: one end, far away from binding clip (1), of binding clip push rod (2) is connected with propulsion structure (3), still is equipped with first feed mechanism (5) and second feed mechanism (6) between actuating handle (4) and propulsion structure (3), actuating handle (4) promote propulsion structure (3) through first feed mechanism (5) and get into in the first space of feeding, actuating handle (4) promote propulsion structure (3) through second feed mechanism (6) and get into in the second space of feeding.

2. A step-feed mechanism for use with a hair clip applier according to claim 1, wherein: the first feeding mechanism (5) is positioned at the front end of the second feeding mechanism (6), the driving handle (4) is rotated, and the first feeding mechanism (5) pushes the propelling structure (3) before the second feeding mechanism (6).

3. A step-feed mechanism for use with a hair clip applier according to claim 1, wherein: the first feeding mechanism (5) comprises a first pushing block (51) fixedly connected to the driving handle (4) and a first pushing assembly (52) connected to the pushing structure (3), and the first pushing block (51) can be pressed on the first pushing assembly (52) by rotating the driving handle (4).

4. A step-feed mechanism for use with a hair clip applier according to claim 3, wherein: the first pushing assembly (52) comprises a mounting seat (53) fixedly connected to the pushing structure (3) and a first stressed pushing block (54), one end of the first stressed pushing block (54) is rotatably connected to the mounting seat (53), the other end of the first stressed pushing block extends towards the direction close to the driving handle (4), and the torsion spring (55) is sleeved on the first stressed pushing block (54).

5. A step-feed mechanism for use with a hair clip applier according to claim 4, wherein: the bottom of one side of the first force-bearing push block (54) close to the first push block (51) is provided with a circular arc-shaped chamfer (56).

6. A step-feed mechanism for use with a hair clip applier according to claim 3, wherein: the second feeding mechanism (6) comprises a second pushing block (61) fixedly connected to the driving handle (4) and a second stressed pushing block (62) fixedly connected to the pushing structure (3), and the second pushing block (61) can be pressed on the second stressed pushing block (62) by rotating the driving handle (4).

7. A step-feed mechanism for use with a hair clip applier according to claim 6, wherein: the first pushing assembly (52) is closer to the tong head (1) than the second stressed pushing block (62), the first pushing block (51) is closer to the tong head (1) than the second pushing block (61), and the distance between the first pushing block (51) and the second pushing block (61) is larger than the distance between the first pushing assembly (52) and the second stressed pushing block (62).

8. A step-feed mechanism for use with a hair clip applier according to claim 1, wherein: the clamp is characterized by further comprising a safety component (7) for preventing the clamp from being clamped mistakenly, wherein one end of the safety component (7) extends into the first feeding mechanism (5) and/or the second feeding mechanism (6).

9. A step-feed mechanism for use with a hair clip applier according to claim 8, wherein: insurance subassembly (7) include frame (74) and the insurance drive assembly (72) of connection on frame (74), the one end of insurance drive assembly (72) is connected with operating button (71), and the other end is connected with spring bolt (73), operating button (71) are connected with spring bolt (73) drive through insurance drive assembly (72), and removal spring bolt (73) can make the one end of spring bolt (73) extend to in second feed mechanism (6).

10. A step-feed mechanism for use with a hair clip applier according to claim 9, wherein: insurance transmission subassembly (72) include that one end rotates to be connected on frame (74), and the other end inserts swing arm (75) to operating button (71) in, still include with frame (74) sliding connection's slider (76), rotate swing arm (75) and can make swing arm (75) press to establish on slider (76), spring bolt (73) fixed connection is in the one end of slider (76), the one end pressure that spring bolt (73) were kept away from in slider (76) is equipped with reset spring (77), the other end pressure of reset spring (77) is established on insurance transmission subassembly (72).

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a step-by-step feeding mechanism applied to a continuous hair clip applier.

Background

Clip applier is a surgical instrument used to apply a clipping operation to a clip of tissue during a surgical procedure. The tissue clips are typically made of a metallic material, such as titanium clips, or other materials, such as plastic clips. When the tissue clamp is used for clamping, the tissue clamp needs to be pushed out of the clamping forceps firstly, and then the tissue clamp is closed by using the forceps head so as to realize clamping. However, some tissue clips, such as tissue clips made of plastic materials, have a large-scale automatic flicking action when being ejected to the position of the clip applier head, which brings inconvenience to the medical staff during the operation.

For example, chinese utility model patent discloses a clip applier [ application No.: 202022036634.6], the utility model discloses a include the pincers body, the bottom of going up the pincers body is provided with down the pincers body, go up the pincers body and pass through pivot swing joint with the pincers body down, the sleeve pipe on pincers body surface is established to the left side fixedly connected with cover of going up the pincers body, the inside of going up the pincers body is provided with the push rod that is located pincers body top down, the left end of push rod runs through the sleeve pipe and extends to the sheathed tube inside, the surperficial swing joint of pivot has the depression bar, the left end of depression bar extends to the left side of the pincers body, the right-hand member of depression bar extend to the front of push rod and with push rod swing joint, the positive fixedly connected with of push rod is located the inside slide bar of depression bar, slide bar and depression bar sliding connection.

The utility model discloses a patent has solved the traditional pincers binding clip of executing clamp and has had the advantage of the unable effective percussion of handle when the foreign matter blocks, but it still does not solve above-mentioned problem.

Disclosure of Invention

The invention aims to solve the problems and provides a step feeding mechanism which is more suitable for a clip which automatically pops open when being ejected and is applied to a continuous hair clip applier.

In order to achieve the purpose, the invention adopts the following technical scheme:

the step-by-step feeding mechanism comprises a binding clip and a binding clip push rod, wherein one end of the binding clip push rod is connected to the binding clip, the binding clip push rod can be moved to drive the binding clip to open or clamp, one end, far away from the binding clip, of the binding clip push rod is connected with a propelling structure, a first feeding mechanism and a second feeding mechanism are further arranged between a driving handle and the propelling structure, the driving handle pushes the propelling structure to enter a first feeding space through the first feeding mechanism, and the driving handle pushes the propelling structure to enter a second feeding space through the second feeding mechanism.

In the step feeding mechanism applied to the continuous hair clip applier, the first feeding mechanism is located at the front end of the second feeding mechanism, the driving handle is rotated, and the first feeding mechanism pushes the propelling structure before the second feeding mechanism.

In the step feeding mechanism applied to the continuous hair clip applier, the first feeding mechanism comprises a first pushing block fixedly connected to the driving handle and a first pushing assembly connected to the pushing structure, and the first pushing block can be pressed on the first pushing assembly by rotating the driving handle.

In the step feeding mechanism applied to the continuous hair clip applier, the first pushing assembly comprises a mounting seat fixedly connected to the pushing structure and a first stressed pushing block, one end of the first stressed pushing block is rotatably connected to the mounting seat, the other end of the first stressed pushing block extends towards the direction close to the driving handle, and the torsion spring is sleeved on the first stressed pushing block.

In the step feeding mechanism applied to the continuous hair clip applier, a circular arc-shaped chamfer is arranged at the bottom of the first stressed pushing block close to one side of the first pushing block.

In the step feeding mechanism applied to the continuous hair clip applier, the second feeding mechanism comprises a second pushing block fixedly connected to the driving handle and a second stressed pushing block fixedly connected to the pushing structure, and the second pushing block can be pressed on the second stressed pushing block by rotating the driving handle.

In the step feeding mechanism applied to the continuous hair clip applier, the first pushing assembly is closer to the tong head than the second stressed pushing block, the first pushing block is closer to the tong head than the second pushing block, and the distance between the first pushing block and the second pushing block is greater than the distance between the first pushing assembly and the second stressed pushing block.

In the step feeding mechanism applied to the continuous hair clip applier, the step feeding mechanism further comprises a safety component for preventing the clips from being clamped mistakenly, and one end of the safety component extends into the first feeding mechanism and/or the second feeding mechanism.

In the stepped feeding mechanism applied to the continuous hair clip applier, the safety component comprises a frame and a safety transmission component connected to the frame, one end of the safety transmission component is connected with an operating button, the other end of the safety transmission component is connected with a lock tongue, the operating button is in driving connection with the lock tongue through the safety transmission component, and one end of the lock tongue can extend into the second feeding mechanism by moving the lock tongue.

In the stepped feeding mechanism applied to the continuous hair clip applier, the safety transmission assembly comprises a swing arm and a sliding block, one end of the swing arm is rotatably connected to the frame, the other end of the swing arm is inserted into the operating button, the sliding block is slidably connected with the frame, the swing arm can be pressed on the sliding block by rotating the swing arm, the lock tongue is fixedly connected to one end of the sliding block, a reset spring is pressed at one end, far away from the lock tongue, of the sliding block, and the other end of the reset spring is pressed on the safety transmission assembly.

Compared with the prior art, the invention has the advantages that:

1. the first feeding mechanism and the second feeding mechanism are utilized to realize two-step clamping of the forceps head, the first feeding mechanism completes the first step of clamping the forceps head to a certain opening degree, thus the amplitude of the automatic flicking action of the tissue clamp can be effectively reduced when the tissue clamp is pushed out, and then the second feeding mechanism is utilized to slowly clamp the tissue clamp to be completely closed, so the tissue clamp is more suitable for the tissue clamp which can flick out during the ejection.

The invention is provided with a safety component which can prop against the second feeding mechanism when the clamping is not needed so as to prevent the mistaken clamping.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic structural view of the first and second feed mechanisms;

FIG. 4 is a schematic structural view of the safety assembly;

in the figure: the pliers head comprises a pliers head 1, a pliers head push rod 2, a propelling structure 3, a driving handle 4, a first feeding mechanism 5, a second feeding mechanism 6, a safety component 7, a first pushing block 51, a first pushing component 52, a mounting seat 53, a first stressed pushing block 54, a torsion spring 55, a chamfer 56, a second pushing block 61, a second stressed pushing block 62, an operating button 71, a safety transmission component 72, a bolt 73, a frame 74, a swing arm 75, a sliding block 76 and a return spring 77.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, a stepwise feeding mechanism applied to a continuous hair clip applier comprises a binding clip 1 and a binding clip push rod 2 with one end connected to the binding clip 1, wherein the binding clip push rod 2 is moved to drive the binding clip 1 to open or clamp, and the binding clip push rod 2 and the binding clip 1 can be connected in a connecting manner commonly used in clip appliers in the prior art to control the opening and closing of the binding clip 1. One end, far away from the binding clip 1, of the binding clip push rod 2 is connected with a propelling structure 3, a first feeding mechanism 5 and a second feeding mechanism 6 are further arranged between the driving handle 4 and the propelling structure 3, the driving handle 4 pushes the propelling structure 3 to enter a first feeding space through the first feeding mechanism 5, and the driving handle 4 pushes the propelling structure 3 to enter a second feeding space through the second feeding mechanism 6. The first feeding space and the second feeding space are the spaces where the pushing structure 3 is located after the first feeding step and after the second feeding step.

When the pliers are used, the driving handle 4 is pulled, so that the first feeding mechanism 5 drives the pushing structure 3 to move until the pushing structure 3 is positioned in the first feeding space, the pliers head 1 is in a semi-closed state, and the driving handle 4 rotates by about 15 degrees. The driving handle 4 is pulled continuously, when the driving handle 4 rotates about 25 degrees, the binding clip 1 is opened again, and then the driving handle 4 is pulled, so that the second feeding mechanism 6 drives the pushing mechanism 3 to move until the pushing mechanism 3 is positioned in the second feeding space, at this time, the binding clip 1 is in a clamping state, and at this time, the driving handle 4 rotates about 42 degrees. Therefore, the invention realizes two-step clamping of the binding clip 1 by using the first feeding mechanism 5 and the second feeding mechanism 6, the first feeding mechanism 5 finishes the first step to clamp the binding clip 1 to a certain opening degree, thus the amplitude of the automatic flicking action of the tissue clip can be effectively reduced when the tissue clip is pushed out, and then the second feeding mechanism 6 is used for slowly clamping to be completely closed, so the invention is more suitable for the tissue clip which can flick out automatically when being pushed out.

Specifically, the first feeding mechanism 5 is located at the front end of the second feeding mechanism 6, and the driving handle 4 is rotated, so that the first feeding mechanism 5 pushes the propelling structure 3 before the second feeding mechanism 6. The structure design is reasonable, the first feeding mechanism 5 can drive the first step first, and the second feeding mechanism 6 can drive the second step.

Referring to fig. 2 and 3, the first feeding mechanism 5 includes a first pushing block 51 fixedly connected to the driving handle 4 and a first pushing assembly 52 connected to the pushing structure 3, and the first pushing block 51 is pressed on the first pushing assembly 52 by rotating the driving handle 4. In use, the drive handle 4 is rotated to press the first push block 51 against the first push assembly 52 to push the push structure 3. After a certain angle, due to the forward movement of the pushing structure 3 and the change of the angle of the first pushing block 51, the distance between the first pushing block 51 and the first pushing assembly 52 is increased, the first pushing block 51 and the first pushing assembly 52 are separated from each other, and the feeding in the first step is completed.

Specifically, the first pushing assembly 52 includes a mounting base 53 fixedly connected to the pushing structure 3 and a first force-bearing pushing block 54, one end of the first force-bearing pushing block 54 is rotatably connected to the mounting base 53, the other end of the first force-bearing pushing block extends in a direction close to the driving handle 4, and the torsion spring 55 is sleeved on the first force-bearing pushing block 54. Therefore, when a large force is applied, the first stressed pushing block 54 can be turned over, so that after the clamping is completed, the first pushing block 51 returns to the rear end of the first stressed pushing block 54 from the front end of the first stressed pushing block 54.

Preferably, the bottom of the first force-bearing pushing block 54 close to the first pushing block 51 is provided with a chamfer 56 in the shape of a circular arc.

Referring to fig. 2 and 3, the second feeding mechanism 6 includes a second pushing block 61 fixedly connected to the driving handle 4 and a second forced pushing block 62 fixedly connected to the pushing structure 3, and the second pushing block 61 is pressed on the second forced pushing block 62 by rotating the driving handle 4. After the first feeding step is completed, the second pushing block 61 is pressed on the second stressed pushing block 62 to push the pushing structure 3 to perform the second feeding step.

Preferably, the first pushing assembly 52 is closer to the binding clip 1 than the second force-bearing pushing block 62, the first pushing block 51 is closer to the binding clip 1 than the second pushing block 61, and the distance between the first pushing block 51 and the second pushing block 61 is greater than the distance between the first pushing assembly 52 and the second force-bearing pushing block 62.

2-4, a safety component 7 for preventing the clip from being mistakenly clamped is further included, and one end of the safety component 7 extends into the first feeding mechanism 5 and/or the second feeding mechanism 6. The invention is provided with a safety component 7 which can prop against the second feeding mechanism 6 when the clamping is not needed so as to prevent the mistaken clamping.

Specifically, the safety assembly 7 includes a frame 74 and a safety transmission assembly 72 connected to the frame 74, one end of the safety transmission assembly 72 is connected to an operation button 71, the other end of the safety transmission assembly 72 is connected to a latch 73, the operation button 71 is in driving connection with the latch 73 through the safety transmission assembly 72, the latch 73 is moved to enable one end of the latch 73 to extend into the second feeding mechanism 6, the safety transmission assembly 72 includes a swing arm 75 with one end rotatably connected to the frame 74 and the other end inserted into the operation button 71, and a slider 76 slidably connected to the frame 74 is further included, the swing arm 75 is rotated to enable the swing arm 75 to be pressed on the slider 76, the latch 73 is fixedly connected to one end of the slider 76, a return spring 77 is pressed on one end of the slider 76 far from the latch 73, and the other end of the return spring 77 is pressed on the safety transmission assembly 72.

When the mistaken clamping is to be prevented, the locking bolt 73 extends to a position between the second pushing block 61 and the second stressed pushing block 62, and when the driving handle 4 is rotated, the second pushing block 61 is pressed on the bottom surface of the locking bolt 73 and is blocked, so that the second stressed pushing block 62 cannot be pushed. When the operation needs to be performed normally in the operation process, the operation button 71 is pressed, the operation button 71 drives the swing arm 75 to swing, one end of the swing arm 75 is pressed on the sliding block 76, the sliding block 76 drives the bolt 73 to synchronously slide away from the second feeding mechanism 6, and at the moment, the return spring 77 is compressed.

The working principle of the invention is as follows: when the feeding mechanism is used, the operating button 71 is pressed, the operating button 71 drives the swing arm 75 to swing, one end of the swing arm 75 is pressed on the sliding block 76, the sliding block 76 drives the bolt 73 to synchronously slide away from the second feeding mechanism 6, and at the moment, the return spring 77 is compressed. The driving handle 4 is pulled again, so that the first pushing block 51 is pressed onto the first pushing assembly 52, thereby pushing the pushing structure 3. After a certain angle is turned, due to the forward movement of the pushing structure 3 and the angle change of the first pushing block 51, the distance between the first pushing block 51 and the first pushing assembly 52 is increased, the first pushing block 51 and the first pushing assembly 52 are separated from each other, the feeding in the first step is completed, the forceps head 1 is in a semi-closed state, and the driving handle 4 is turned by about 15 degrees. The driving handle 4 is continuously pulled, when the driving handle 4 rotates by about 25 degrees, the binding clip 1 is opened again, then the driving handle 4 is pulled, the second pushing block 61 is pressed on the second stressed pushing block 62 to push the pushing structure 3 to perform the second feeding step, at this time, the binding clip 1 is in a clamping state, and at this time, the driving handle 4 rotates by about 42 degrees. Therefore, the invention realizes two-step clamping of the binding clip 1 by using the first feeding mechanism 5 and the second feeding mechanism 6, the first feeding mechanism 5 finishes the first step to clamp the binding clip 1 to a certain opening degree, thus the amplitude of the automatic flicking action of the tissue clip can be effectively reduced when the tissue clip is pushed out, and then the second feeding mechanism 6 is used for slowly clamping to be completely closed, so the invention is more suitable for the tissue clip which can flick out automatically when being pushed out.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms of the binding clip 1, the binding clip pushing rod 2, the pushing structure 3, the driving handle 4, the first feeding mechanism 5, the second feeding mechanism 6, the safety component 7, the first pushing block 51, the first pushing component 52, the mounting seat 53, the first forced pushing block 54, the torsion spring 55, the chamfer 56, the second pushing block 61, the second forced pushing block 62, the operating button 71, the safety transmission component 72, the lock tongue 73, the frame 74, the swing arm 75, the sliding block 76, the return spring 77 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.