Collagen thread cutting device based on acupoint thread embedding

Abstract

The invention belongs to the technical field of medical apparatus and instruments, and discloses a collagen thread cutting device based on acupoint thread embedding, the collagen thread cutting device comprises a handle and rotating assemblies, the rotating assemblies are symmetrically arranged in a needle tube, and the interiors of the rotating assemblies are movably connected with clamping assemblies. Through cooperation of the rotating assembly, the clamping assembly, the moving assembly and other structures, the position of a collagen line can be conveniently fixed, and then the cutting efficiency is improved; a convex block is movably clamped in a chute, so that a first limiting block drives two rotating cylinders to rotate by 90 degrees when moving, and an arc-shaped gasket is made of a silica gel material, so that the collagen line is conveniently positioned, and meanwhile, the damage to the surface of the collagen line is reduced; the two arc-shaped gaskets are used for clamping the two ends of the cut position of the collagen line correspondingly, so that the collagen line is prevented from shaking or displacing when being cut, and then the overall cutting efficiency of the device is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular is a collagen thread cutting device based on acupuncture thread embedding. Background Art

[0002] Acupuncture thread embedding collagen thread is a beauty therapy that combines traditional Chinese acupuncture and modern medical technology. Specifically, it embeds specially made collagen threads into specific acupuncture points on the skin to achieve the effects of promoting collagen production, improving skin sagging, enhancing facial contours and reducing wrinkles.

[0003] When using existing acupuncture thread embedding needles, the collagen thread is generally cut into a predetermined length in advance according to the treatment needs and the location of the acupuncture points, and then inserted into the needle holes one by one. There are also a few thread embedding needles on the market that are provided with a cutter inside the needle tube for the convenience of use. However, when the cutter cuts the thread embedding needle, since the thread embedding needle has no effective support platform inside the needle tube, it is easy to cause the collagen thread to slip or deviate during the thread cutting operation, thereby affecting the cutting efficiency and accuracy, and even causing unnecessary harm to the patient in severe cases. Therefore, a collagen thread cutting device based on acupuncture thread embedding is proposed to solve the problems raised in the background technology. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a collagen thread cutting device based on acupuncture thread embedding, which has the advantage of facilitating the positioning of the collagen thread, thereby improving the cutting efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a collagen thread cutting device based on acupoint thread embedding, comprising a handle, and also comprising:

[0006] A needle tube, the needle tube is fixedly connected to one end of the handle;

[0007] A rotating assembly, wherein the rotating assembly is symmetrically arranged inside the needle tube, and a clamping assembly is movably connected inside the rotating assembly;

[0008] A moving assembly, wherein the moving assembly is movably connected to the handle and the inside of the needle tube, and one end of the moving assembly is fixedly connected to the connecting rod assembly;

[0009] A cutter, the cutter is movably connected to the inside of the needle tube, and a push assembly is symmetrically arranged on both sides;

[0010] The rotating assembly comprises a rotating drum, and an outer wall of the rotating drum is provided with an inclined groove with an arc of 90 degrees and a vertical groove with an arc of 0 degrees.

[0011] Preferably, a collagen thread is arranged inside the needle tube, a thread hole is opened on the surface of the needle tube, the opposite ends of the two rotating cylinders are both inclined, and the opposite ends of the inclined groove and the vertical groove are connected.

[0012] Preferably, the clamping assembly comprises a turntable, a guide groove is provided on the surface of the turntable, the arc of the guide groove is ninety degrees, a first round rod is movably clamped inside the guide groove, and a clamping block is fixedly connected to the outer wall of the first round rod.

[0013] Preferably, an arc-shaped gasket is fixedly connected to the side of the clamping block away from the first round rod, and the arc-shaped gasket is made of silicone material. The inner wall of the handle is provided with a straight groove that matches the first round rod, and the straight groove is used to circumferentially limit the first round rod when the drum rotates.

[0014] Preferably, the inner wall of the rotating drum is provided with a sliding groove for circumferentially limiting the rotating disk, and the side of the rotating disk away from the clamping block is fixedly connected to a first spring fixed to the rotating drum, and the first spring is used to squeeze the rotating disk and keep the two rotating disks moving toward each other.

[0015] Preferably, the moving assembly includes a push block, which is located outside the handle, and the handle is internally movably connected to a moving block fixedly connected to the push block, one side of the moving block is fixedly connected to a second spring fixedly connected to the handle, and one end of the moving block away from the push block is fixedly connected to a first limit block and a second limit block respectively.

[0016] Preferably, two protrusions are fixedly connected to one side of the first limit block, and the two protrusions are movably engaged in the inside of the two inclined grooves respectively;

[0017] When the first limiting block moves toward the direction of the rotating assembly, it drives the protrusion to slide along the track of the inclined groove and causes the rotating drum to rotate.

[0018] Preferably, the second limit block is internally movably connected to a second round rod, the second round rod is externally movably sleeved with a third spring at one end away from the second limit block, the two ends of the third spring are respectively fixedly connected to the handle and the second round rod, and the end of the connecting rod assembly away from the second round rod is fixedly connected to the cutter.

[0019] Preferably, both ends of the bottom of the cutter are in the shape of an inclined surface, the pushing assembly comprises a round block, the top end of the outer wall of the round block is fixedly connected with an inclined block, the opposite sides of the two inclined blocks are in the shape of an inclined surface, and the two ends of the bottom of the cutter are respectively in contact with the inclined surfaces of the two inclined blocks.

[0020] Preferably, a spring sheet is fixedly connected to a side of the inclined block away from the cutter, and the spring sheet is fixed to the handle;

[0021] When the cutter moves downward, the two inclined blocks are squeezed to move in opposite directions. After the inclined blocks move, the round block is driven to abut against the clamping block, and the clamping block is pushed to move in the direction of the first spring.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention facilitates fixing the position of the collagen line through the coordination between structures such as the rotating component, the clamping component and the moving component, thereby improving the cutting efficiency; the convex block is movably clamped in the interior of the inclined groove, so that the first limit block drives the two rotating cylinders to rotate ninety degrees when moving, and the first round rod drives the clamping block to move toward the collagen line along the trajectory of the guide groove, so that the clamping block drives the arc gasket to clamp the collagen line. The arc gasket is made of silicone material, which makes it convenient to position the collagen line while reducing damage to the surface of the collagen line. The two groups of arc gaskets are used to clamp the two ends of the collagen line to be cut, respectively, to prevent the collagen line from shaking or shifting when being cut, thereby improving the overall cutting efficiency of the device.

[0024] The present invention improves the overall cutting accuracy of the cutting device through the coordination between structures such as the inclined block, the round block and the connecting rod assembly. Through the design of the connecting rod assembly, the force of the second round rod moving toward the connecting rod assembly is converted into a force for the cutter to move downward. The cutter abuts against the inclined surfaces of the two inclined blocks, thereby facilitating the squeezing of the two inclined blocks to move in opposite directions. The inclined block then drives the round block to abut against the side wall of the clamping block, and the clamping block is squeezed by the round block to move in the direction of the first spring, so that the two groups of arc-shaped gaskets respectively drive the clamped two ends of the collagen line to move in opposite directions, thereby tightening the middle parts of the clamped two ends, thereby improving the accuracy of the cutter in cutting the collagen line. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the front cross-section structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the front cross-section structure of the needle tube of the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0030] Figure 6 It is a schematic diagram of the positional relationship among the rotating assembly, the clamping assembly, the moving assembly and the pushing assembly of the present invention;

[0031] Figure 7 It is a schematic diagram of the front cross-section structure of the rotating assembly of the present invention;

[0032] Figure 8 It is an exploded view of the clamping assembly of the present invention.

[0033] In the figure: 1. handle; 2. needle tube; 3. rotating assembly; 301. rotating drum; 302. oblique groove; 303. vertical groove; 304. sliding groove; 4. clamping assembly; 401. turntable; 402. guide groove; 403. clamping block; 404. first round rod; 405. arc-shaped gasket; 406. first spring; 407. straight notch; 5. moving assembly; 501. push block; 502. moving block; 503. second spring; 504. first limit block; 505. protrusion; 506. second limit block; 507. second round rod; 508. third spring; 6. connecting rod assembly; 7. cutter; 8. pushing assembly; 801. round block; 802. oblique block; 803. spring; 9. collagen thread; 10. thread hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 8 As shown, the present invention provides a collagen thread cutting device based on acupoint thread embedding, comprising a handle 1, and also comprising:

[0036] A needle tube 2, which is fixedly connected to one end of the handle 1;

[0037] The rotating assembly 3 is symmetrically arranged inside the needle tube 2, and the interior of the rotating assembly 3 is movably connected with the clamping assembly 4;

[0038] A moving assembly 5, the moving assembly 5 is movably connected to the handle 1 and the inside of the needle tube 2, and one end of the moving assembly 5 is fixedly connected to a connecting rod assembly 6;

[0039] A cutter 7, the cutter 7 is movably connected to the inside of the needle tube 2, and a push assembly 8 is symmetrically arranged on both sides;

[0040] The rotating assembly 3 includes a rotating drum 301 , and an outer wall of the rotating drum 301 is provided with an inclined groove 302 with an arc of 90 degrees and a vertical groove 303 with an arc of 0 degrees.

[0041] The above scheme is adopted: the protrusion 505 is movably connected to the inside of the inclined groove 302, so that when the first limit block 504 moves, it drives the two rotating drums 301 to rotate ninety degrees, and the first round rod 404 drives the clamping block 403 to move toward the direction of the collagen line 9 along the trajectory of the guide groove 402, so that it is convenient for the clamping block 403 to drive the arc gasket 405 to clamp the collagen line 9. The arc gasket 405 is made of silicone material, which makes it convenient to position the collagen line 9 while reducing damage to the surface of the collagen line 9. The two sets of arc gaskets 405 are used to clamp the two ends of the cut part of the collagen line 9 respectively.

[0042] like Figures 1 to 8 As shown, a collagen line 9 is arranged inside the needle tube 2, a line hole 10 is provided on the surface of the needle tube 2, the opposite ends of the two rotating cylinders 301 are both in the shape of a slope, the oblique groove 302 and the opposite ends of the vertical groove 303 are connected, the clamping assembly 4 comprises a turntable 401, a guide groove 402 is provided on the surface of the turntable 401, the curvature of the guide groove 402 is ninety degrees, a first round rod 404 is movably clamped inside the guide groove 402, a clamping block 403 is fixedly connected to the outer wall of the first round rod 404, a curved gasket 405 is fixedly connected to the side of the clamping block 403 away from the first round rod 404, the curved gasket 405 is made of silicone material, a straight groove 407 matching the first round rod 404 is provided on the inner wall of the handle 1, and the straight groove 407 is used to circumferentially limit the first round rod 404 when the rotating cylinder 301 rotates.

[0043] The above solution is adopted: the opposite ends of the two rotating cylinders 301 are both inclined, and its function is that when the collagen thread 9 is inserted into the needle tube 2, it may contact the side wall of the rotating component 3, and the inclined surface design can make the collagen thread 9 slide along the inclined surface. Compared with the flat design, this method can significantly reduce the insertion force required for the collagen thread 9, thereby making the operation smoother;

[0044] The arc-shaped gasket 405 is made of silicone material. Since silicone material has excellent elasticity, toughness and biocompatibility, the arc-shaped gasket 405 can clamp the collagen thread 9 while reducing damage to the collagen thread 9.

[0045] like Figures 5 to 8As shown, the inner wall of the rotating cylinder 301 is provided with a slide groove 304 for circumferentially limiting the rotating disk 401, and the side of the rotating disk 401 away from the clamping block 403 is fixedly connected to the first spring 406 fixedly connected to the rotating cylinder 301, the first spring 406 is used to squeeze the rotating disk 401 and keep the two rotating disks 401 moving towards each other, the moving component 5 includes a push block 501, the push block 501 is located outside the handle 1, and the handle 1 is internally movably connected with a moving block 502 fixedly connected to the push block 501, one side of the moving block 502 is fixedly connected to the second spring 503 fixedly connected to the handle 1, and the end of the moving block 502 away from the push block 501 is fixedly connected to the first limit block 504 and the second limit block 506 respectively.

[0046] The above scheme is adopted: through the design of the second spring 503, its function is that when the device completes the tangent, at this time, the operator releases the push block 501, so that the moving block 502 is reset under the action of the elastic force of the second spring 503, and then drives the overall structure inside the needle tube 2 to reset, so as to facilitate the operator to use it next time.

[0047] like Figure 6 As shown, one side of the first limit block 504 is fixedly connected to two protrusions 505, and the two protrusions 505 are movably engaged in the inside of the two inclined grooves 302 respectively. When the first limit block 504 moves toward the direction of the rotating component 3, the protrusion 505 is driven to slide along the trajectory of the inclined groove 302 and the rotating drum 301 is rotated. The second limit block 506 is internally movably connected to the second round rod 507, and the outer part of the second round rod 507 away from the second limit block 506 is movably sleeved with a third spring 508, and the two ends of the third spring 508 are respectively fixedly connected to the handle 1 and the second round rod 507, and the end of the connecting rod assembly 6 away from the second round rod 507 is fixedly connected to the cutter 7.

[0048] The above scheme is adopted: through the design of the third spring 508, its function is that the third spring 508 is used to squeeze the second round rod 507 and keep the second round rod 507 moving away from the connecting rod assembly 6. When the moving block 502 drives the second limit block 506 to reset under the action of the elastic force of the second spring 503, the second round rod 507 moves toward the inside of the second limit block 506 under the action of the elastic force of the third spring 508, and then drives the cutter 7 to move upward through the connecting rod assembly 6, thereby ensuring the normal operation of the device.

[0049] like Figure 3 to Figure 4 , Figures 6 to 8As shown, both ends of the bottom of the cutter 7 are in the shape of an inclined surface, and the pushing component 8 includes a round block 801. The top of the outer wall of the round block 801 is fixedly connected with an inclined block 802. The opposite sides of the two inclined blocks 802 are in the shape of an inclined surface. The two ends of the bottom of the cutter 7 are respectively abutted against the inclined surfaces of the two inclined blocks 802. The side of the inclined block 802 away from the cutter 7 is fixedly connected with a spring piece 803. The spring piece 803 is fixedly connected to the handle 1. When the cutter 7 moves downward, the two inclined blocks 802 are squeezed to move in opposite directions. After the inclined block 802 moves, it drives the round block 801 to abut against the clamping block 403 and pushes the clamping block 403 to move in the direction of the first spring 406.

[0050] The above scheme is adopted: through the design of the connecting rod assembly 6, the force of the second round rod 507 moving toward the connecting rod assembly 6 is converted into a force for the cutter 7 to move downward, and the cutter 7 is abutted against the inclined surfaces of the two inclined blocks 802, so as to facilitate the extrusion of the two inclined blocks 802 to move in opposite directions, and then the inclined block 802 drives the round block 801 to abut against the side wall of the clamping block 403, and the clamping block 403 is squeezed by the round block 801 to move in the direction of the first spring 406, so that the two groups of arc-shaped gaskets 405 respectively drive the clamped two ends of the collagen line 9 to move in opposite directions, so that the middle parts of the clamped two ends are tightened, thereby improving the accuracy of the cutter 7 in cutting the collagen line 9;

[0051] Through the design of the spring piece 803, its function is: when the cutter 7 moves up and releases the squeezing of the two inclined blocks 802, at this time, the two inclined blocks 802 move toward each other under the elastic force of the spring piece 803, and drive the round block 801 to reset, so that the round block 801 releases the squeezing of the clamping block 403, and the clamping block 403 is reset under the elastic force of the first spring 406, so as to facilitate the operator to use it next time.

[0052] The working principle and use process of the present invention are as follows: when the length of the collagen line 9 needs to be cut, at this time, the operator pushes the push block 501 in the direction of the needle tube 2, so that the push block 501 drives the moving block 502 to move in the same direction. When the moving block 502 moves, it drives the first limit block 504 and the second limit block 506 to move together, so that the two protrusions 505 are driven by the first limit block 504 to slide along the trajectory of the inclined groove 302, thereby driving the rotating drum 301 to rotate ninety degrees. When the rotating drum 301 rotates, the circumferential limit of the rotating disk 401 is limited by the sliding groove 304, thereby driving the rotating disk 401 to rotate together, so that the first limit block 504 drives the two protrusions 505 to slide along the trajectory of the inclined groove 302, thereby driving the rotating drum 301 to rotate ninety degrees. The round rod 404 slides along the track of the guide groove 402. When the first round rod 404 slides, the straight groove 407 limits the circumferential position of the first round rod 404, so that when the first round rod 404 slides, it can only drive the clamping block 403 and the arc-shaped gasket 405 thereon to move toward the direction of the collagen line 9. When the protrusion 505 slides to the inside of the vertical groove 303, the two groups of arc-shaped gaskets 405 are in contact with the collagen line 9 and clamp the two ends of the collagen line 9, thereby fixing the position of the collagen line 9, and further providing certain support for the subsequent cutting operation, thereby preventing the collagen line 9 from shaking when being cut, affecting the cutting accuracy;

[0053] When the second limit block 506 moves, the second round rod 507 slides inside it. When the protrusion 505 slides into the interior of the vertical groove 303, the inner wall of the second limit block 506 abuts against one end of the second round rod 507. Then, the moving block 502 continues to move, so that the protrusion 505 slides along the trajectory of the vertical groove 303. At the same time, the second limit block 506 pushes the second round rod 507 to move in the direction of the cutter 7. When the second round rod 507 moves, the direction of the force is converted through the connecting rod assembly 6, so that the second round rod 507 moves with The movable cutter 7 moves downward, so that the cutter 7 squeezes the two inclined blocks 802 to move in opposite directions. The inclined blocks 802 move while driving the round block 801 to move in the direction of the first spring 406, so that the round block 801 abuts against the side wall of the clamping block 403, and then squeezes the clamping block 403 to move in the same direction. When the two groups of clamping blocks 403 move, the two ends of the collagen line 9 are driven to move in opposite directions, so that the middle parts of the two clamped ends of the collagen line 9 are tightened, thereby improving the stability of the cut portion of the collagen line 9, thereby improving the cutting accuracy and efficiency of the entire cutting device;

[0054] Then the cutter 7 abuts against the plane of the inclined block 802, and the cutter 7 continues to move downward until the protrusion 505 abuts against the inner wall of the vertical groove 303. At this time, the cutter 7 contacts the middle of the two ends of the collagen line 9 and cuts the middle part, completing the operation.

[0055] It is worth noting here that the interior of the handle 1 includes a wire pushing structure for facilitating the pushing of the collagen wire 9 out of the interior of the needle tube 2, thereby ensuring that the collagen wire 9 can be accurately and unimpededly implanted into a predetermined position, such as an acupuncture point or tissue, and the above belongs to the prior art.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A collagen thread cutting device based on acupuncture thread embedding, comprising a handle (1), characterized in that: Also includes: A needle tube (2), wherein the needle tube (2) is fixedly connected to one end of the handle (1); A rotating assembly (3), wherein the rotating assembly (3) is symmetrically arranged inside the needle tube (2), and a clamping assembly (4) is movably connected inside the rotating assembly (3); A moving assembly (5), wherein the moving assembly (5) is movably connected to the handle (1) and the inside of the needle tube (2), and one end of the moving assembly (5) is fixedly connected to a connecting rod assembly (6); A cutter (7), the cutter (7) being movably connected to the inside of the needle tube (2), and having push components (8) symmetrically arranged on both sides; The rotating assembly (3) comprises a rotating drum (301), and an outer wall of the rotating drum (301) is provided with an inclined groove (302) with an arc of 90 degrees and a vertical groove (303) with an arc of 0 degrees.

2. The collagen thread cutting device based on acupuncture thread embedding according to claim 1, characterized in that: A collagen thread (9) is arranged inside the needle tube (2), and a thread hole (10) is opened on the surface of the needle tube (2). The opposite ends of the two rotating cylinders (301) are both inclined, and the opposite ends of the inclined groove (302) and the vertical groove (303) are connected.

3. The collagen thread cutting device based on acupuncture thread embedding according to claim 1, characterized in that: The clamping assembly (4) comprises a rotating disk (401), a guide groove (402) is provided on the surface of the rotating disk (401), the arc of the guide groove (402) is ninety degrees, a first round rod (404) is movably clamped inside the guide groove (402), and a clamping block (403) is fixedly connected to the outer wall of the first round rod (404).

4. The collagen thread cutting device based on acupuncture thread embedding according to claim 3 is characterized in that: A curved gasket (405) is fixedly connected to one side of the clamping block (403) away from the first round rod (404), and the curved gasket (405) is made of a silicone material. A straight slot (407) matching the first round rod (404) is provided on the inner wall of the handle (1), and the straight slot (407) is used to circumferentially limit the first round rod (404) when the rotating drum (301) rotates.

5. The collagen thread cutting device based on acupuncture thread embedding according to claim 1, characterized in that: The inner wall of the rotating cylinder (301) is provided with a sliding groove (304) for circumferentially limiting the rotating disk (401); a first spring (406) fixedly connected to the rotating cylinder (301) is fixedly connected to the side of the rotating disk (401) away from the clamping block (403); the first spring (406) is used to squeeze the rotating disk (401) and keep the two rotating disks (401) in a tendency to move toward each other.

6. The collagen thread cutting device based on acupuncture thread embedding according to claim 1, characterized in that: The moving assembly (5) comprises a push block (501), wherein the push block (501) is located outside the handle (1), and the handle (1) is internally movably connected to a moving block (502) fixedly connected to the push block (501), one side of the moving block (502) is fixedly connected to a second spring (503) fixedly connected to the handle (1), and one end of the moving block (502) away from the push block (501) is respectively fixedly connected to a first limit block (504) and a second limit block (506).

7. The collagen thread cutting device based on acupuncture thread embedding according to claim 6, characterized in that: Two protrusions (505) are fixedly connected to one side of the first limit block (504), and the two protrusions (505) are movably engaged in the interior of the two inclined grooves (302) respectively; When the first limiting block (504) moves toward the direction of the rotating assembly (3), it drives the protrusion (505) to slide along the track of the inclined groove (302) and causes the rotating drum (301) to rotate.

8. The collagen thread cutting device based on acupuncture thread embedding according to claim 6, characterized in that: The second limit block (506) is internally movably connected to a second round rod (507), and the second round rod (507) is externally movably sleeved at one end away from the second limit block (506) with a third spring (508), and the two ends of the third spring (508) are respectively fixedly connected to the handle (1) and the second round rod (507), and the end of the connecting rod assembly (6) away from the second round rod (507) is fixedly connected to the cutter (7).

9. The collagen thread cutting device based on acupuncture thread embedding according to claim 1, characterized in that: Both ends of the bottom of the cutter (7) are in the shape of an inclined surface. The pushing assembly (8) comprises a round block (801). The top end of the outer wall of the round block (801) is fixedly connected to an inclined block (802). The opposite sides of the two inclined blocks (802) are in the shape of an inclined surface. The two ends of the bottom of the cutter (7) are respectively in contact with the inclined surfaces of the two inclined blocks (802).

10. The collagen thread cutting device based on acupuncture thread embedding according to claim 9, characterized in that: A spring sheet (803) is fixedly connected to the side of the inclined block (802) away from the cutter (7), and the spring sheet (803) is fixedly connected to the handle (1); When the cutter (7) moves downward, it squeezes the two inclined blocks (802) to move in opposite directions. After the inclined blocks (802) move, they drive the round block (801) to abut against the clamping block (403) and push the clamping block (403) to move in the direction of the first spring (406).

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