Heat shrink tube stripping device for medical sheath tube production

Abstract

The utility model discloses a heat shrink tube stripping device for medical sheath tube production, which comprises a bottom plate, a horizontal sliding rail, a sliding seat and two side plates, and a cutting unit is mounted between the two side plates. The cutting unit comprises two cylindrical rotating rods, a mounting rod connected between the two rotating rods, a cylindrical mounting disc mounted at the mounting rod and a plurality of cutters mounted at the mounting disc, the side plates are provided with penetrating holes through which the rotating rods penetrate, and locking bolts capable of locking the rotating rods are mounted at the top ends of the side plates; the sliding seat comprises a seat body, two L-shaped plates connected with the seat body and two end plates connected with the seat body, a sheathing canal placing part is connected between the two L-shaped plates, the sheathing canal placing part comprises limiting tubes which are distributed in a row and have open annular sections, and every two adjacent limiting tubes are connected through a connecting plate. According to the heat shrink tube stripping device, efficient stripping of heat shrink tubes of sheathing canals of different specifications can be achieved.

Description

Technical Field

[0001] This application relates to the field of medical devices, and particularly to a heat shrinkable tube stripping device for the production of medical sheaths. Background Art

[0002] Sheaths are commonly used medical devices in catheter intervention therapy in the medical field and are used to guide catheters. The structure of the sheath includes an inner layer tube, an outer layer tube, and a spring layer or a braided layer located between the inner layer tube and the outer layer tube, etc. And during the preparation process of the sheath, it is necessary to use a heat shrinkable tube to wrap the entire sheath. After heating, the heat shrinkable tube needs to be stripped. During the stripping process, on the one hand, it is necessary to effectively and quickly strip the heat shrinkable tube, and on the other hand, it is necessary not to damage the outer layer tube inside the heat shrinkable tube. Therefore, if not using the corresponding device, it will lead to great difficulty in the operation of stripping the heat shrinkable tube and it is easy to damage the sheath itself. Patent CN219543286U discloses a device for stripping the heat shrinkable tube from the sheath, which can help strip the heat shrinkable tube. However, in the actual production and manufacturing process, there are differences in the size specifications of the manufactured sheaths, and there are also differences in the wall thickness of the used heat shrinkable tubes. If a device that can adapt to sheaths of different size specifications can be designed, it will greatly increase the efficiency of stripping the heat shrinkable tube and increase the adaptability of the stripping device, and make the operation of stripping the heat shrinkable tube simpler. Summary of the Utility Model

[0003] Purpose of the Utility Model: This application aims to overcome the defects of the prior art and provide a heat shrinkable tube stripping device for the production of medical sheaths.

[0004] Technical Solution: A heat shrinkable tube stripping device for the production of medical sheaths includes a bottom plate, a horizontal slide rail fixedly connected to the bottom plate, a slide seat installed on the horizontal slide rail, and two side plates fixedly connected to the bottom plate. A cutting unit is installed between the two side plates. The cutting unit includes two cylindrical rotating rods, a mounting rod connected between the two rotating rods, a cylindrical mounting disk installed at the mounting rod, and a plurality of cutting knives installed at the mounting disk. The side plate has a through hole through which the rotating rod passes, and a locking bolt capable of locking the rotating rod is installed at the top of the side plate; the slide seat includes a seat body, two L-shaped plates connected to the seat body, and two end plates connected to the seat body. A sheath placement part is connected between the two L-shaped plates. The sheath placement part includes a row of limiting tubes with an open-ring cross-section, and adjacent two limiting tubes are connected by a connecting plate; the horizontal slide rail has a plurality of first limiting jacks, and both of the two end plates have a plurality of second limiting jacks. At least one fixing bolt is installed on the slide seat, and the fixing bolt passes through a first limiting jack and two second limiting jacks and cooperates with a fixing nut to fix the relative position of the slide seat and the horizontal slide rail.

[0005] Further, the horizontal slide rail is located between the two end plates.

[0006] Further, a plurality of limiting tubes are evenly distributed at equal intervals, and the inner diameters of any two limiting tubes are different.

[0007] Further, for the two limiting tubes at both ends, one limiting tube is connected to an L-shaped plate, and the other limiting tube is connected to another L-shaped plate.

[0008] Further, for the plurality of limiting tubes from the limiting tube at one end to the limiting tube at the other end, the inner diameters of the plurality of limiting tubes gradually increase in sequence.

[0009] Further, the cross-section of the mounting rod is a regular hexagon; a positioning unit is installed at one of the side plates. The positioning unit includes a convex block fixedly connected to the side plate, a positioning rod passing through the convex block, a baffle fixedly connected to the end of the positioning rod, and a pull ring fixed to the baffle. A tension spring is connected between the convex block and the baffle. The convex block has a through hole through which the positioning rod passes, and the mounting rod has 6 positioning blind holes through which the positioning rod can pass.

[0010] Further, the number of the limiting tubes is 5. Each end plate has 5 second limiting jacks, and there is one of the limiting tubes above each second limiting jack.

[0011] Thus, the positions of the second limiting jacks match the positions of the limiting tubes, so as to better position and fix the limiting tubes.

[0012] Further, the number of the cutting knives is 6, and they are evenly distributed in a ring at equal intervals, and the lengths of any two cutting knives are different.

[0013] Further, there are at least two fixing bolts and fixing nuts.

[0014] Beneficial effects: For the heat shrinkable tube stripping device of the present application, by placing the sheath tube into the limiting tube and pulling the sheath tube in the limiting tube, the heat shrinkable tube is thus cut open by the cutting knife, so that the heat shrinkable tube can be easily stripped.

[0015] The heat shrinkable tube stripping device of the present application can also select appropriate limiting tubes and cutting knives for heat shrinkable tubes with different size specifications and different wall thicknesses, so that the usability of the device is stronger. Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the first perspective of the stripping device;

[0017] Figure 2 It is a schematic diagram of the second perspective of the stripping device;

[0018] Figure 3 It is a schematic diagram of the stripping device stripping the heat shrinkable tube. Detailed Embodiments

[0019] Reference numerals: 1.1 base plate; 1.2 horizontal slide rail; 1.3 first limit jack; 1.4 side plate; 1.5 locking bolt; 2.1 mounting rod; 2.1.1 positioning blind hole; 2.2 rotating rod; 2.3 mounting disc; 2.4 cutting knife; 3.1 seat body; 3.2 L-shaped plate; 3.3 limiting tube; 3.4 connecting plate; 3.5 end plate; 3.6 second limit jack; 3.7 fixing bolt; 4.1 bump; 4.2 positioning rod; 4.3 tension spring; 4.4 baffle; 4.5 pull ring; 5 sheath tube wrapped with heat shrinkable tube.

[0020] As Figures 1-3 shown, a heat shrinkable tube stripping device for medical sheath tube production includes a base plate 1.1, a horizontal slide rail 1.2 fixedly connected to the base plate 1.1, a slide seat mounted on the horizontal slide rail 1.2, and two side plates 1.4 fixedly connected to the base plate 1.1. A cutting unit is installed between the two side plates 1.4. The cutting unit includes two cylindrical rotating rods 2.2, a mounting rod 2.1 connected between the two rotating rods 2.2, a cylindrical mounting disc 2.3 installed at the mounting rod 2.1, and a plurality of cutting knives 2.4 installed at the mounting disc 2.3. The side plate 1.4 has a through hole through which the rotating rod passes. A locking bolt 1.5 capable of locking the rotating rod 2.2 is installed at the top of the side plate 1.4; The slide seat includes a seat body 3.1, two L-shaped plates 3.2 connected to the seat body 3.1, and two end plates 3.5 connected to the seat body 3.1. A sheath tube placing part is connected between the two L-shaped plates 3.2. The sheath tube placing part includes a row of limiting tubes 3.3 with an open annular cross-section. Adjacent two limiting tubes 3.3 are connected by a connecting plate 3.4; The horizontal slide rail 1.2 has a plurality of first limit jacks 1.3, and both of the two end plates 3.5 have a plurality of second limit jacks 3.6. At least one fixing bolt 3.7 is installed on the slide seat. The fixing bolt 3.7 passes through a first limit jack 1.3 and two second limit jacks 3.6 and cooperates with a fixing nut to fix the relative positions of the slide seat and the horizontal slide rail 1.2.

[0021] A plurality of limiting tubes 3.3 are evenly distributed at equal intervals, and the inner diameters of any two limiting tubes 3.3 are different. From the limiting tube 3.3 at one end to the limiting tube 3.3 at the other end among the plurality of limiting tubes 3.3, the inner diameters of the plurality of limiting tubes 3.3 gradually increase. The cross-section of the mounting rod 2.1 is a regular hexagon; a positioning unit is installed at one of the side plates 1.4. The positioning unit includes a convex block 4.1 fixedly connected to the side plate 1.4, a positioning rod 4.2 passing through the convex block 4.1, a baffle 4.4 fixedly connected to the end of the positioning rod 4.2, and a pull ring 4.5 fixed to the baffle 4.4. A tension spring 4.3 is connected between the convex block 4.1 and the baffle 4.4. The convex block 4.1 has a through hole through which the positioning rod 4.2 passes, and the mounting rod 2.1 has 6 positioning blind holes 2.1.1 through which the positioning rod 4.2 can pass. The number of the limiting tubes 3.3 is 5. Each end plate 3.5 has 5 second limiting jacks 3.6, and there is one of the limiting tubes 3.3 above each second limiting jack 3.6. The number of the cutting knives 2.4 is 6, and they are evenly distributed in a ring shape, and the lengths of any two cutting knives 2.4 are different.

[0022] For the heat shrinkable tube stripping device of the present application, as shown in the figure, according to the specifications of the sheath tube, a suitable limiting tube can be selected (so that the outer diameter of the heat shrinkable tube is equal to the inner diameter of the limiting tube). By adjusting the horizontal position of the sliding seat, the sheath tube can be located below the cutting knife and fixedly connected by using the fixing bolt and the fixing nut. And according to the wall thickness of the heat shrinkable tube, a suitable cutting knife can be selected (the positioning unit enables the rotating rod to rotate only in multiples of 60 degrees each time, so as to ensure that the cutting knife is in a vertical state. Before rotating the rotating rod, it is necessary to pull down the pull ring so that the positioning plug rod disengages from the positioning blind hole. After the rotating rod is adjusted, the positioning plug rod is inserted into the corresponding positioning blind hole again), and after the selection, it is fixed by using the locking bolt. Then, by pulling the sheath tube (the bottom plate is fixed), the heat shrinkable tube can be cut by using the end of the cutting edge of the selected cutting knife, so that the heat shrinkable tube can be easily stripped after passing through the cutting knife.

[0023] Although the present utility model has been illustrated and described with respect to the preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present utility model as long as they do not exceed the scope defined by the claims of the present utility model.

Claims

1. A heat-shrinkable tube stripping device for medical sheath tube production, characterized in that, It includes a bottom plate, a horizontal slide rail fixedly connected to the bottom plate, a slide seat installed on the horizontal slide rail, and two side plates fixedly connected to the bottom plate. A cutting unit is installed between the two side plates. The cutting unit includes two cylindrical rotating rods, a mounting rod connected between the two rotating rods, a cylindrical mounting disc installed at the mounting rod, and a plurality of cutting knives installed at the mounting disc. The side plate has a through hole through which the rotating rod passes, and a locking bolt capable of locking the rotating rod is installed at the top of the side plate. The slide seat includes a seat body, two L-shaped plates connected to the seat body, and two end plates connected to the seat body. A sheath tube placement part is connected between the two L-shaped plates. The sheath tube placement part includes a row of limiting tubes with an open-ring cross-section, and adjacent two limiting tubes are connected by a connecting plate. The horizontal slide rail has a plurality of first limiting jacks, and each of the two end plates has a plurality of second limiting jacks. At least one fixing bolt is installed on the slide seat. The fixing bolt passes through one first limiting jack and two second limiting jacks and cooperates with a fixing nut to fix the relative positions of the slide seat and the horizontal slide rail. The plurality of limiting tubes are equally spaced, and the inner diameters of any two limiting tubes are different. From the limiting tube at one end to the limiting tube at the other end, the inner diameters of the plurality of limiting tubes increase in sequence.

2. The heat shrinkable tube stripping device for medical sheath tube production according to claim 1, characterized in that, The cross-section of the mounting rod is a regular hexagon. A positioning unit is installed on one of the side plates. The positioning unit includes a convex block fixedly connected to the side plate, a positioning rod passing through the convex block, a baffle fixedly connected to the end of the positioning rod, and a pull ring fixed to the baffle. A tension spring is connected between the convex block and the baffle. The convex block has a through hole through which the positioning rod passes, and the mounting rod has 6 positioning blind holes capable of being penetrated by the positioning rod.

3. The heat shrinkable tube stripping device for medical sheath tube production according to claim 1, characterized in that, The number of the limiting tubes is 5. Each end plate has 5 second limiting jacks, and there is one of the limiting tubes above each second limiting jack.

4. The heat shrinkable tube stripping device for medical sheath tube production according to claim 1, characterized in that, The number of the cutting knives is 6, and they are equally spaced in a ring shape. The lengths of any two cutting knives are different.

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