Storable stitch ripper

Abstract

The utility model relates to the technical field of stitch rifles, in particular to a storable stitch rifle which comprises a hilt and a blade, a containing cavity for the blade to be pushed in is arranged in the hilt, a fixing plate is connected below the blade in a sliding mode, a sliding groove is arranged in the containing cavity, one end of the fixing plate slides in the containing cavity through a sliding block and the sliding groove, and the other end of the fixing plate is connected with the blade in a sliding mode. A clamping block is fixedly connected to the end, located in the containing cavity, of the fixing plate, the pair of sliding blocks are arranged on the two sides of the clamping block respectively, and an elastic limiting mechanism for limiting movement of the blade is arranged on the inner wall of the containing cavity. According to the utility model, a thin thread at a wound suture position is picked up through the picking hook, then the blade slides on the fixing plate by pushing the second push rod, and when the tip cutting edge of the blade coincides with the front end of the fixing plate, the picked-up thin thread is cut off, so that the wound of a patient is prevented from being injured by the blade, and the operation is simple and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of seam ripper knives, in particular to a stowable seam ripper knives. Background Art

[0002] Currently, in surgical treatment, the sutures need to be removed for the healed wounds. Currently, the sutures are generally cut and then pulled out using suture removers.

[0003] However, in the process of surgical stitch removal, medical staff usually hold stitch removal blades to complete the stitch removal, which may easily cause scratches and infections to medical staff, posing a great safety hazard. In some special occasions, such as when the wound is very small, it is difficult for medical staff to remove stitches with a handheld blade without affecting the wound, and there is almost no operating space. Moreover, the size of stitch removal blades is usually fixed, making it inconvenient to find a stitch removal blade of appropriate length in time to remove the sutures from the patient's wound.

[0004] For this reason, we designed a stowable seam ripper. Utility Model Content

[0005] The utility model aims to solve the problems in the prior art and provides a stowable stitch-removing knife.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A storable stitch-removing knife comprises a handle and a blade, wherein the handle is provided with a receiving cavity into which the blade can be pushed, a fixed plate is slidably connected below the blade, a sliding groove is provided in the receiving cavity, one end of the fixed plate slides in the receiving cavity through a sliding block and the sliding groove, and the other end is fixedly provided with a picking hook, one end of the fixed plate located in the receiving cavity is fixedly connected with a clamping block, a pair of the sliding blocks are respectively provided on both sides of the clamping block, an inner wall of the receiving cavity is provided with an elastic limiting mechanism for limiting the movement of the blade, and the elastic limiting mechanism comprises a pair of sliding blocks for clamping and fixing the two sides of the clamping block.

[0008] Preferably, the elastic limiting mechanism further includes:

[0009] A pressing rod, a second spring, a mounting plate and a pair of L-shaped pressing blocks, wherein the pressing rod moves in the accommodating chamber, the portion of the pressing rod located in the accommodating chamber is coaxially fixedly connected with a disc, a second spring is coaxially sleeved on the outer side of the pressing rod, one end of the second spring is fixedly connected to the inner wall of the accommodating chamber, and the other end is fixedly connected to the disc, one end of the pressing rod located in the accommodating chamber is fixedly connected to the mounting plate, a pair of L-shaped pressing blocks are respectively arranged at both ends of the mounting plate, and a clamping block is arranged on the L-shaped pressing block;

[0010] A second slide groove and a third spring, wherein the second slide groove is opened at the bottom of the accommodating cavity, a pair of the sliders are symmetrically arranged in the second slide groove, and a pair of the sliders are each provided with a card slot adapted to the card block, and the two ends of the third spring are respectively fixedly connected to the pair of sliders.

[0011] Preferably, a limiting slide block is fixedly connected to the bottom of the blade, a limiting slide groove is provided on the side of the fixed plate in contact with the blade, the blade moves on the fixed plate through the limiting slide block and the limiting slide groove, and a first spring is provided between the blade and the clamping block.

[0012] Preferably, a first slide groove is provided on the knife handle, a first push rod is fixedly connected to the fixed plate, a second push rod is fixedly connected to the blade, and the first push rod and the second push rod are both arranged in the first slide groove.

[0013] Preferably, a cutting groove parallel to the cutting edge of the blade tip is provided on one side of the fixing plate close to the blade tip.

[0014] The beneficial effects of the utility model are:

[0015] 1. The utility model fixes or releases the clamping block connected to the blade by cooperating with the pressing rod, the mounting plate, the L-shaped pressure block, the sliding block, the second sliding groove, the clamping block, the connecting spring and the second spring elastic force, and then pushes the first push rod to make the fixing plate drive the blade in and out of the accommodating cavity to adjust the length of the blade, thereby avoiding the problem of medical staff being easily scratched and infected when removing stitches with the blade in hand.

[0016] 2. The utility model uses a hook to pick up the thin thread at the wound suture, and then pushes the second push rod to make the blade slide on the fixed plate. When the tip of the blade coincides with the front end of the fixed plate, the picked thin thread is cut off, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a stowable stitch ripper proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the connection between a blade of a stitch ripper that can be stored and a clamping block proposed by the utility model;

[0019] Figure 3 The utility model is a schematic diagram of an elastic limiting mechanism capable of storing a stitch ripper.

[0020] In the figure: 1. handle; 2. blade; 3. accommodating chamber; 4. clamping block; 5. sliding groove; 6. sliding block; 7. fixing plate; 8. limiting sliding groove; 9. first spring; 10. first push rod; 11. second push rod; 12. first sliding groove; 13. pressing rod; 14. second spring; 15. mounting plate; 16. second sliding groove; 17. sliding block; 18. clamping groove; 19. third spring; 20. L-shaped pressure block; 21. picking hook. DETAILED DESCRIPTION

[0021] Reference Figure 1-Figure 3 A stowable stitch-ripper comprises a handle 1 and a blade 2. A receiving cavity 3 for the blade 2 to be pushed in is arranged in the handle 1. A fixing plate 7 is slidably connected below the blade 2. The fixing plate 7 is located at one end of the receiving cavity 3 and is fixedly connected with a clamping block 4. A pair of sliding blocks 6 are respectively arranged on both sides of the clamping block 4. An elastic limiting mechanism for limiting the movement of the blade 2 is arranged on the inner wall of the receiving cavity 3. The elastic limiting mechanism is used to clamp and fix both sides of the clamping block 4. By pressing a pressing rod 13 arranged on the handle 1, the clamping block 4 is released from the limit, thereby realizing the storage and release of the blade 2.

[0022] The elastic limiting mechanism includes a pair of sliders 17, the elastic limiting mechanism also includes a pressing rod 13, a second spring 14, a mounting plate 15 and a pair of L-shaped pressing blocks 20, the pressing rod 13 moves in the accommodating chamber 3, the portion of the pressing rod 13 located in the accommodating chamber 3 is coaxially fixedly connected with a disc, the outer side of the pressing rod 13 is coaxially sleeved with a second spring 14, one end of the second spring 14 is fixedly connected to the inner wall of the accommodating chamber 3, and the other end is fixedly connected to the disc, one end of the pressing rod 13 located in the accommodating chamber 3 is fixedly connected to the mounting plate 15, and a pair of L-shaped pressing blocks 20 are respectively arranged on the mounting plate 15. At both ends of the plate 15, there are clamping blocks on the L-shaped pressing blocks 20. By pressing the pressing rod 13, the mounting plate 15 drives the pair of L-shaped pressing blocks 20 to respectively squeeze and cooperate with the inclined surfaces at the top of the pair of sliders 17, so that the pair of sliders 17 are close to each other in the second slide groove 16, and the clamping block 4 is clamped and fixed. At this time, the clamping blocks on the pair of L-shaped pressing blocks 20 are clamped in the clamping groove 18, so that the extended length of the blade 2 is fixed, and the extended length of the blade 2 is adjusted, so as to avoid the problem of medical staff holding the blade to remove the stitches, which may cause scratches and infections to the medical staff;

[0023] The second slide groove 16 and the third spring 19, the second slide groove 16 is opened at the bottom of the accommodating chamber 3, a pair of sliders 17 are symmetrically arranged in the second slide groove 16, and a pair of sliders 17 are provided with a card slot 18 adapted to the card block, and the two ends of the third spring 19 are respectively fixedly connected to the pair of sliders 17. When it is necessary to adjust the length of the blade 2, continue to press the pressing rod 13 so that the L-shaped pressing block 20 continues to move downward under the sliding of the inclined surface. Since the pair of sliders 17 clamp and fix the card block 4, at this time, the pair of L-shaped pressing blocks 20 are mutually connected under the action of the elastic force of the connecting spring When the block on the L-shaped pressing block 20 is out of the card slot 18, under the action of the elastic force of the second spring 14, the pressing rod 13 drives the pair of L-shaped pressing blocks 20 to return to the top of the pair of sliders 17. Here, the elastic coefficients of the second spring 14 and the connecting spring are selected according to the actual application requirements to ensure that the pair of L-shaped pressing blocks 20 will no longer be subjected to horizontal forces when moving upward, so as to avoid the block from re-setting the card slot 18. The connecting spring is coaxially inserted with a telescopic rod, one end of which is fixedly connected to the L-shaped pressing block 20, and the other end is fixedly connected to the mounting plate 15;

[0024] At this time, the pair of sliders 17 move away from each other under the elastic force of the third spring 19 , and then by pushing the first push rod 10 , the fixing plate 7 drives the blade 2 in and out of the accommodating cavity 3 , so as to adjust the length of the blade 2 .

[0025] Reference Figure 1 and Figure 2 The bottom of the blade 2 is fixedly connected to a limiting slider, and a limiting slot 8 is provided on a side of the fixing plate 7 that contacts the blade 2. The blade 2 moves on the fixing plate 7 through the limiting slider and the limiting slot 8. A first spring 9 is provided between the blade 2 and the clamping block 4. The effect of this arrangement is that when the elastic limiting mechanism releases the clamping and fixing of the clamping block 4, the extended length of the blade 2 is adjusted by pushing the first push rod 10. When the extended length of the blade 2 is adjusted, the pressing rod 13 is pressed to make the elastic limiting mechanism clamp and fix the clamping block 4 again, thereby fixing the extended length of the blade 2.

[0026] Reference Figure 1 and Figure 2 A sliding groove 5 is provided in the accommodating cavity 3, one end of the fixed plate 7 slides in the accommodating cavity 3 through the sliding block 6 and the sliding groove 5, and a hook 21 is fixedly provided at the other end. A cutting groove parallel to the tip edge of the blade 2 is provided on the side of the fixed plate 7 close to the tip of the blade 2, and a first sliding groove 12 is opened on the handle 1, a first push rod 10 is fixedly connected to the fixed plate 7, and a second push rod 11 is fixedly connected to the blade 2. The first push rod 10 and the second push rod 11 are both arranged in the first sliding groove 12, and the thin line at the wound suture is picked up by the hook 21, and then the blade 2 slides on the fixed plate 7 by pushing the second push rod 11. When the tip edge of the blade 2 coincides with the front end of the fixed plate 7, the picked up thin line is cut off.

[0027] The working principle of the utility model is as follows:

[0028] By pressing the pressing rod 13, the mounting plate 15 drives the pair of L-shaped pressing blocks 20 to respectively squeeze and cooperate with the inclined surfaces at the top of the pair of sliders 17, so that the pair of sliders 17 are close to each other in the second slide groove 16, and the clamping block 4 is clamped and fixed. At this time, the clamping blocks on the pair of L-shaped pressing blocks 20 are clamped in the clamping groove 18, so that the extended length of the blade 2 is fixed. When the length of the blade 2 needs to be adjusted, the pressing rod 13 is continued to be pressed, so that the L-shaped pressing block 20 continues to move downward under the sliding of the inclined surface. The slider 17 clamps the clamping block 4, and at this time, the pair of L-shaped pressure blocks 20 move away from each other under the action of the elastic force of the connecting spring. When the block on the L-shaped pressure block 20 is out of the card slot 18, the pressing rod 13 drives the pair of L-shaped pressure blocks 20 to return to the top of the pair of sliders 17 under the action of the elastic force of the second spring 14. At this time, the pair of sliders 17 move away from each other under the action of the elastic force of the third spring 19, and then by pushing the first push rod 10, the fixed plate 7 drives the blade 2 in and out of the accommodating cavity 3 to adjust the length of the blade 2.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stowable stitch ripper, comprising a handle (1) and a blade (2), characterized in that: The knife handle (1) is provided with a receiving cavity (3) for the blade (2) to be pushed in, a fixed plate (7) is slidably connected below the blade (2), a sliding groove (5) is provided in the receiving cavity (3), one end of the fixed plate (7) slides in the receiving cavity (3) through a sliding block (6) and the sliding groove (5), and a pick hook (21) is fixedly provided at the other end, one end of the fixed plate (7) located in the receiving cavity (3) is fixedly connected with a clamping block (4), a pair of sliding blocks (6) are respectively arranged on both sides of the clamping block (4), and an elastic limiting mechanism for limiting the movement of the blade (2) is provided on the inner wall of the receiving cavity (3), and the elastic limiting mechanism includes a pair of sliding blocks (17) for clamping and fixing the two sides of the clamping block (4).

2. The stowable stitch ripper according to claim 1, characterized in that: The elastic limiting mechanism also includes: A pressing rod (13), a second spring (14), a mounting plate (15) and a pair of L-shaped pressing blocks (20), wherein the pressing rod (13) moves in the accommodating chamber (3), the portion of the pressing rod (13) located in the accommodating chamber (3) is coaxially fixedly connected with a disc, a second spring (14) is coaxially sleeved on the outer side of the pressing rod (13), one end of the second spring (14) is fixedly connected to the inner wall of the accommodating chamber (3), and the other end is fixedly connected to the disc, one end of the pressing rod (13) located in the accommodating chamber (3) is fixedly connected to the mounting plate (15), a pair of L-shaped pressing blocks (20) are respectively arranged at two ends of the mounting plate (15), and a clamping block is provided on the L-shaped pressing block (20); A second slide groove (16) and a third spring (19), wherein the second slide groove (16) is opened at the bottom of the accommodating cavity (3), a pair of sliders (17) are symmetrically arranged in the second slide groove (16), and a pair of sliders (17) are each provided with a clamping groove (18) adapted to the clamping block, and two ends of the third spring (19) are respectively fixedly connected to the pair of sliders (17).

3. The stowable seam ripper according to claim 1, characterized in that: The bottom of the blade (2) is fixedly connected to a limiting slide block, a side of the fixed plate (7) in contact with the blade (2) is provided with a limiting slide groove (8), the blade (2) moves on the fixed plate (7) via the limiting slide block and the limiting slide groove (8), and a first spring (9) is provided between the blade (2) and the clamping block (4).

4. The stowable seam ripper according to claim 1, characterized in that: The knife handle (1) is provided with a first slide groove (12), the fixed plate (7) is fixedly connected with a first push rod (10), the blade (2) is fixedly connected with a second push rod (11), and the first push rod (10) and the second push rod (11) are both arranged in the first slide groove (12).

5. The stowable seam ripper according to claim 1, characterized in that: A cutting groove parallel to the cutting edge of the tip of the blade (2) is provided on one side of the fixing plate (7) close to the tip of the blade (2).

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