Medical heat shrink tube cutting device
The medical heat shrink tube cutting device addresses the issue of inaccurate manual adjustments by using a precision adjustment mechanism with X, Y, and Z-axis slides and stable positioning, ensuring precise cuts without damaging the catheter.
Patent Information
- Application Number
- CN202323371324.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-12
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-12-12
AI Technical Summary
Existing cutting devices for medical heat shrink tubes adjust the feed distance between the cutter and the tube manually, leading to inaccurate cuts and potential damage to the medical catheter due to the thin wall thickness of the heat shrink tube.
A medical heat shrink tube cutting device with a precision adjustment mechanism using X, Y, and Z-axis movable slides to accurately control the feed distance between the cutter and the placement table, combined with V-shaped rollers and a guide support for stable positioning, ensuring precise cutting without damaging the catheter.
The device achieves precise adjustment of the feed distance, preventing accidental cutting of the medical catheter and ensuring uniform cuts, improving cutting efficiency and quality.
Smart Images
Figure CN222270550U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical catheter production accessories, in particular to a medical heat shrink tube cutting device. Background Art
[0002] Heat shrink tubing is a special polyolefin heat shrink tubing, which is generally used for welding pipe fittings (e.g., inner pipe, outer pipe) in the medical device industry. When welding is completed, the heat shrink tubing is still wrapped around the medical catheter. Figure 1 As shown, it will not fall off freely. It is necessary to use a cutting knife or other tools to carefully cut a small hole in the heat shrink tube based on operating experience, and then tear the heat shrink tube off from the pipe fitting by hand. Figure 1 The mark 25 in the figure indicates the mandrel; the mark 26 indicates the body of the medical catheter; and the mark 27 indicates the medical film heat sink tube. This method not only makes the shape and size of the separated heat shrink tubes ununiform, but also easily scratches the surface of the tube, making it difficult to ensure the efficiency and quality of cutting. Therefore, cutting devices for heat shrink tubes have appeared on the market, such as the patent number 202221623951.0, and the patent name is a cutting device for heat shrink tubes. However, during use, it was found that the feed distance between the cutter and the heat shrink tube was adjusted by manually tightening the screws. Considering that the wall thickness of the medical heat shrink tube after heat shrinkage is only between 0.2-0.5mm, it is impossible to accurately identify and quantify it with the naked eye, resulting in damage to the body of the medical catheter after the heat shrink tube is removed. Therefore, how to design a cutting device for accurately removing the heat shrink tube is particularly important. Utility Model Content
[0003] The purpose of the utility model is to provide a medical heat shrink tube cutting device to solve the problem that the current cutting device proposed in the above background technology adjusts the feed distance between the cutter and the heat shrink tube by adjusting the manual screw locking method, resulting in the inability to accurately cut the heat shrink tube and easily damaging the medical catheter.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a medical heat shrink tube cutting device, comprising a base and a placement table for placing the heat shrink tube, a knife holder is fixed on the base, a cutter is arranged at the front end of the knife holder, the placement table is located below the cutter, an adjustment component connected to the placement table and used to adjust the feed distance between the placement table and the cutter is fixed on the base, the adjustment component comprises an X-axis seat, an X-axis movable slide, a Y-axis seat, a Y-axis movable slide, a Z-axis seat and a Z-axis movable slide, the X-axis seat is fixed on the base, and an X-axis is rotatably connected to the X-axis seat A moving knob, the X-axis moving knob is connected to the moving end of the X-axis moving slide, the Y-axis moving slide is fixed to the moving end of the X-axis moving slide, the Y-axis seat is fixed to the fixed end of the Y-axis moving slide, and the Y-axis moving knob is rotatably connected to the Y-axis seat, the Y-axis moving knob is connected to the moving end of the Y-axis moving slide, the Z-axis moving slide is fixed to the moving end of the Y-axis moving slide, the Z-axis seat is fixed to the fixed end of the Z-axis moving slide, the Z-axis moving knob is rotatably connected to the Z-axis seat, the Z-axis moving knob is connected to the moving end of the Z-axis moving slide, and the placement table is fixed on the moving end of the Z-axis moving slide.
[0005] Preferably, in order to facilitate cutting, a placement rack is fixed above the placement table, and two V-shaped rollers are rotatably connected to the placement rack.
[0006] Preferably, a rotating shaft is provided on both sides of each V-shaped roller, and the rotating shaft is rotatably connected to the placement rack.
[0007] Preferably, in order to improve the positioning effect and avoid the heat shrink tube from being placed stably and tilting to one side during cutting, which affects the cutting effect, a guide support is also fixed on the base, and the guide support is provided with a guide through hole for inserting and positioning the heat shrink tube, and the guide through hole is aligned with the V-shaped hole of the V-shaped roller.
[0008] Preferably, in order to improve the positioning effect of the heat shrink tube, a compression spring is fixed on the tool holder, a positioning rod is fixed to the other end of the compression spring, a spring roller is rotatably connected below the positioning rod, and the spring roller is used to compress the heat shrink tube into the V-shaped hole of the V-shaped roller.
[0009] Preferably, in order to prevent slipping when placed, four silicone seats are arranged at the bottom of the base.
[0010] Preferably, in order to facilitate the later disassembly and replacement of the cutter, the cutter is fixed to the cutter holder by screws.
[0011] Compared with the prior art, the beneficial effect of the utility model is that the structure ensures that the adjustment of the feed distance between the cutter and the placement table is more precise, avoiding accidentally cutting the medical catheter inside the combined tube body due to inaccurate adjustment during cutting. Therefore, the adjustment precision of the structure is higher and more accurate than that of screw adjustment. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the connection structure between a medical heat shrink tube and a medical catheter in the prior art;
[0013] Figure 2 A three-dimensional diagram of a medical heat shrink tube cutting device in Example 1;
[0014] Figure 3 It is a front view of a medical heat shrink tube cutting device in Example 1;
[0015] Figure 4 This is a side view of a medical heat shrink tube cutting device in Example 1.
[0016] In the figure: base 1, placement table 2, knife holder 3, cutter 4, X-axis seat 5, X-axis moving slide 6, Y-axis seat 7, Y-axis moving slide 8, Z-axis seat 9, Z-axis moving slide 10, X-axis moving knob 11, Y-axis moving knob 12, Z-axis moving knob 13, placement frame 14, V-shaped roller 15, rotating shaft 16, guide support 17, guide through hole 18, compression spring 19, spring roller 20, silicone seat 21, screw 22, positioning rod 23, combined tube body 24, core shaft 25, medical catheter tube body 26, medical film heat host tube 27. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0018] Example 1
[0019] See also Figure 2-Figure 4The present embodiment provides a medical heat shrink tube cutting device, comprising a base 1 and a placing table 2, a knife holder 3 is fixed on the base 1, a cutter 4 is arranged at the front end of the knife holder 3, the placing table 2 is located below the cutter 4, an adjusting component connected to the placing table 2 and used to adjust the feeding distance between the placing table 2 and the cutter 4 is fixed on the base 1, the adjusting component comprises an X-axis seat 5, an X-axis moving slide 6, a Y-axis seat 7, a Y-axis moving slide 8, a Z-axis seat 9 and a Z-axis moving slide 10, the X-axis seat 5 is fixed on the base 1, an X-axis moving knob 11 is rotatably connected to the X-axis seat 5, and the X-axis moving knob 11 is connected to the moving end of the X-axis moving slide 6, the Y-axis moving slide 8 is fixed at the moving end of the X-axis moving slide 6, the Y-axis seat 7 is fixed at the fixed end of the Y-axis moving slide 8, and the Y-axis seat 7 is rotatably connected with a Y-axis moving knob 12, the Y-axis moving knob 12 is connected to the moving end of the Y-axis moving slide 8, the Z-axis moving slide 10 is fixed at the moving end of the Y-axis moving slide 8, the Z-axis seat 9 is fixed at the fixed end of the Z-axis moving slide 10, the Z-axis seat 9 is rotatably connected with a Z-axis moving knob 13, the Z-axis moving knob 13 is connected to the moving end of the Z-axis moving slide 10, and the placement table 2 is fixed on the moving end of the Z-axis moving slide 10.
[0020] It should be noted in this embodiment that the X-axis mobile slide 6, the Y-axis mobile slide 8 and the Z-axis mobile slide 10 are all precision mobile slides that can be directly purchased, and in order to reduce components, the slides in the three directions of XYZ are directly purchased as a three-axis precision slide that can achieve three-axis movement, that is, it is actually a slide that can be adjusted in three directions.
[0021] When in use, it is explained first that a combined tube body 24 composed of a heat shrink tube and a medical catheter is placed on the placement table 2, and then the X-axis moving knob 11 is rotated as required to drive the moving end on the X-axis moving slide 6 to move along the X-axis direction, and finally drive the Y-axis moving slide 8 and the Z-axis moving slide 10 above to move along the X-axis direction, synchronously drive the placement table 2 to move along the X-axis direction, and rotate the Y-axis moving knob 12 to drive the moving end on the Y-axis moving slide 8 to move along the Y-axis direction, and finally drive the Z-axis moving slide above 10 moves along the Y-axis direction, synchronously drives the placement table 2 to move along the Y-axis direction, and drives the moving end on the Z-axis moving slide 10 to move along the Y-axis direction by rotating the Z-axis moving knob 13 to drive the placement table 2 to move along the Z-axis direction, so as to control the feed amount between the combined tube body 24 and the cutter 4, and finally ensure that the adjustment of the feed distance between the cutter and the placement table 2 is more precise, avoiding accidentally cutting the medical catheter inside the combined tube body 24 due to inaccurate adjustment during cutting. Therefore, compared with the screw adjustment, the present structure has higher adjustment precision and is more accurate.
[0022] Preferably, in order to facilitate cutting, a placing frame 14 is fixed above the placing table 2, and two V-shaped rollers 15 are rotatably connected to the placing frame 14, and a rotating shaft 16 is provided on both sides of each V-shaped roller 15, and the rotating shaft 16 is rotatably connected to the placing frame 14. When in use, a combined tube body 24 combining the heat shrink tube and the medical catheter is placed in the V-shaped clamp of the two V-shaped rollers 15, and the combined tube body 24 is quickly rotated by rotating the combined tube body 24 in coordination with the rotation of the V-shaped rollers 15, so as to facilitate the cutting action of the cutter 4 above, and the V-shaped roller 15 can limit the combined tube body 24.
[0023] Preferably, a guide support 17 is also fixed on the base 1, and a guide through hole 18 is provided on the guide support 17 for inserting and positioning the heat shrink tube, and the guide through hole 18 is aligned with the V-shaped hole of the V-shaped roller 15. By providing a guide through hole 18 to cooperate with two V-shaped rollers 15, three-point positioning of the combined tube body 24 is achieved to avoid tilting and deviation of the combined tube body 24 when it is placed, and to avoid the heat shrink tube from being placed stably and tilting to one side during cutting, thereby affecting the cutting effect; at the same time, in order to improve the positioning effect of the heat shrink tube (the heat shrink tube referred to here is actually the combined tube body 24), a compression spring 19 is also fixed on the tool holder 3, and the other end of the compression spring 19 A positioning rod 23 is fixed at one end, and a spring roller 20 is rotatably connected to the lower part of the positioning rod 23. The spring roller 20 is used to press the heat shrink tube into the V-shaped hole of the V-shaped roller 15. By setting the spring roller 20 and cooperating with the compression spring 19, it can always ensure that the combined tube body 24 is pressed tightly against the V-shaped roller 15, effectively controlling the movement of the heat shrink tube, and also playing a positioning role; in order to prevent slipping when placed, four silicone seats 21 are provided at the bottom of the base 1. In order to facilitate the later disassembly and replacement of the cutter, the cutter 4 is fixed to the knife holder 3 by a screw 22. By providing the silicone seat 21 at the bottom of the base 1, it can prevent slipping when placed.
[0024] During operation, the combined tube body 24 to be peeled off is placed on the V-shaped roller 15, and the gap and feed amount between the heat shrink tube and the cutter are adjusted by adjusting the precision moving slide. When the feed amount is adjusted appropriately (the appropriate position of the feed amount is confirmed by the actual effect of cutting the heat shrink tube, that is, the tube body is not damaged, which proves that the feed amount is appropriate), the Y-axis moving slide 8 is driven to work and move the medical catheter in the Y direction, that is, the upper combined tube body 24 is driven to rotate, so as to peel off the heat shrink tube (why the heat shrink tube can be peeled off in the Y direction). Therefore, this structure has the following advantages:
[0025] 1. The use of a high-precision moving slide can accurately control the feed amount between the stripping heat shrink tube and the cutter, thereby avoiding damage to the catheter body due to thin wall thickness;
[0026] 2. Use the guide bracket 17 to simplify the manual steps and solve the problem of deviation during the long-length stripping process;
[0027] 3. Use the V-shaped roller 15 to limit the position of the medical catheter heat shrink tube, so as to prevent the tube body from being offset in the Y-axis direction. At the same time, the V-shaped roller 15 can enable the tube body to be quickly moved and stripped on the platform;
[0028] 4. Use the spring roller 20 to press tightly together so that the position of the heat shrink tube and the cutter remains fixed relative to each other before peeling off;
[0029] 5. The whole structure is small and does not need to occupy too much area.
[0030] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.
Claims
1. A medical heat shrink tube cutting device, comprising a base (1) and a placement table (2), a knife holder (3) is fixed on the base (1), a cutting knife (4) is arranged at the front end of the knife holder (3), and the placement table (2) is located below the cutting knife (4), characterized in that: An adjusting component connected to the placing table (2) and used for adjusting the feeding distance between the placing table (2) and the cutter (4) is fixed on the base (1), and the adjusting component comprises an X-axis seat (5), an X-axis movable slide (6), a Y-axis seat (7), a Y-axis movable slide (8), a Z-axis seat (9) and a Z-axis movable slide (10), wherein the X-axis seat (5) is fixed on the base (1), an X-axis movable knob (11) is rotatably connected to the X-axis seat (5), the X-axis movable knob (11) is connected to the movable end of the X-axis movable slide (6), and the Y-axis movable slide (8) is fixed to the X-axis movable slide (6). The Y-axis seat (7) is fixed to the fixed end of the Y-axis movable slide (8), and the Y-axis seat (7) is rotatably connected to a Y-axis movable knob (12), and the Y-axis movable knob (12) is connected to the movable end of the Y-axis movable slide (8), the Z-axis movable slide (10) is fixed to the movable end of the Y-axis movable slide (8), the Z-axis seat (9) is fixed to the fixed end of the Z-axis movable slide (10), and the Z-axis seat (9) is rotatably connected to a Z-axis movable knob (13), and the Z-axis movable knob (13) is connected to the movable end of the Z-axis movable slide (10), and the placement table (2) is fixed to the movable end of the Z-axis movable slide (10).
2. A medical heat shrink tube cutting device according to claim 1, characterized in that: A placement frame (14) is fixed above the placement platform (2), and two V-shaped rollers (15) are rotatably connected to the placement frame (14).
3. A medical heat shrink tube cutting device according to claim 2, characterized in that: A rotating shaft (16) is provided on both sides of each V-shaped roller (15), and the rotating shaft (16) is rotatably connected to the placement frame (14).
4. A medical heat shrink tube cutting device according to claim 3, characterized in that: A guide support (17) is also fixed on the base (1), and a guide through hole (18) for inserting and positioning the heat shrink tube is provided on the guide support (17), and the guide through hole (18) is aligned with the V-shaped hole of the V-shaped roller (15).
5. A medical heat shrink tube cutting device according to claim 4, characterized in that: A compression spring (19) is also fixed on the tool holder (3), a positioning rod (23) is fixed to the other end of the compression spring (19), a spring roller (20) is rotatably connected below the positioning rod (23), and the spring roller (20) is used to compress the heat shrink tube into the V-shaped hole of the V-shaped roller (15).
6. A medical heat shrink tube cutting device according to claim 5, characterized in that: Four silica gel seats (21) are arranged at the bottom of the base (1).
7. A medical heat shrink tube cutting device according to claim 5, characterized in that: The cutting knife (4) is fixed on the knife holder (3) by means of screws (22).