Cardiovascular stent tube cutting equipment

Abstract

The utility model discloses cardiovascular stent tube cutting equipment which comprises a working table, a two-dimensional motion platform is arranged on one side of the outer wall of the top end of the working table, a lining assembly is arranged on one side of the two-dimensional motion platform and comprises a shell and a V-shaped plate, the shell is fixed to the outer wall of the top end of the working table, and the V-shaped plate is fixed to the shell. The V-shaped plates are connected to the inner wall of the shell in a sliding mode, the two V-shaped plates are oppositely arranged, fixing plates are detachably connected to the outer walls of the V-shaped plates, two-way threaded rods are arranged on the two sides of each V-shaped plate, and the fixing plates are in threaded fit with the two-way threaded rods. According to the bushing assembly, the V-shaped plates, the bidirectional threaded rods and the fixing plates are arranged, and the distance between the two V-shaped plates is adjusted, so that the friction loss between the metal cylinders and the V-shaped plates can be compensated, the conditions of abrasion, looseness and the like are prevented, the service life of the bushing assembly product is prolonged, and meanwhile, the positioning of the metal cylinders with different diameters can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of cardiovascular stent tubes, in particular to a cardiovascular stent tube cutting device. Background Art

[0002] During clinical treatment, vascular occlusion often occurs due to vascular lesions and other reasons. At this time, the blood vessel's blood supply capacity is insufficient. As a conventional vascular drainage tool, vascular stents are placed in the diseased segment to support the narrowed occluded segment of the blood vessel, reduce the elastic retraction and reshaping of the blood vessel, and maintain smooth blood flow in the lumen. Existing vascular stents can be roughly divided into two categories according to their processing methods, namely cutting stents and braided stents. Cutting stents refer to cutting the structural shape of the stent on an existing metal cylinder using laser cutting and other process methods; braided stents are woven from fine metal wires; during laser cutting, a sleeve is used to assist in positioning the metal cylinder.

[0003] After searching, the Chinese patent publication number CN206717294U discloses an open laser cutting sleeve for cardiovascular stents, including a sleeve body; a center hole is opened in the middle of the sleeve body, and a stent tube is inserted in the center hole; the rear end of the sleeve body is recessed inward to form a recessed portion; the recessed portion is conical; the front end of the sleeve body is cut to form a conical cutting portion, and the angle between the outer side surface of the cutting portion and the horizontal line is 30 to 60 degrees; a truncation surface is provided at the front upper end of the sleeve body, and the angle between the truncation surface and the horizontal plane is 10 to 30 degrees; the middle of the front end of the sleeve body is recessed inward to form an inner chamfer.

[0004] This patent has the following supplement: after long-term use, the sleeve structure will rub against the metal cylinder and cause wear, resulting in an increase in the fitting clearance. Therefore, the sleeve needs to be replaced regularly, otherwise it will affect the processing accuracy and efficiency. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a cardiovascular stent tube cutting device.

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

[0007] The cardiovascular stent tube cutting equipment includes a workbench, a two-dimensional motion platform is arranged on one side of the outer wall at the top of the workbench, a bushing assembly is arranged on one side of the two-dimensional motion platform, the bushing assembly includes a shell and a V-shaped plate, the shell is fixed to the outer wall at the top of the workbench, the V-shaped plate is slidably connected to the inner wall of the shell, and the two V-shaped plates are arranged opposite to each other, the outer wall of the V-shaped plate is detachably connected to a fixing plate, two-way threaded rods are arranged on both sides of the V-shaped plate, and the fixing plate is threadably matched with the two-way threaded rod.

[0008] As a further solution of the utility model: the top of the bidirectional threaded rod is connected to a driven gear, the top of the shell is rotatably connected to a rotating button, the rotating shaft of the rotating button is connected to a driving gear, and the driving gear is matched with the driven gear through a transmission gear.

[0009] As a further solution of the utility model: a chuck is arranged at one end of the two-dimensional motion platform, and a fixing frame is fixed to the outer wall of the top end of the workbench.

[0010] As a further solution of the utility model: a laser cutting head is connected to the outer wall of the bottom end of the fixing frame, and the cutting head of the laser cutting head is located at one side of the bushing assembly.

[0011] As a further solution of the utility model: grooves are provided on both sides of the V-shaped plate, the grooves are arranged in a straight line, and the grooves on the two V-shaped plates are staggered.

[0012] As a further solution of the utility model: the outer walls of the two V-shaped plates on one side opposite to each other are rotatably connected with balls, and the balls are arranged in an array.

[0013] As a further solution of the utility model: the V-shaped plate and the fixed plate are connected by an elastic component, and the elastic component includes a connecting sleeve and a sliding rod. The connecting sleeve is fixed to the outer wall of the V-shaped plate, and the sliding rod is fixed to the outer wall of the fixed plate and the adjacent side of the V-shaped plate.

[0014] As a further solution of the utility model: the sliding rod is longitudinally slidably matched with the inner wall of the connecting sleeve, a spring is fixed to the inner wall of the connecting sleeve, and two ends of the spring are respectively connected to the connecting sleeve and the sliding rod.

[0015] Compared with the prior art, the utility model provides a cardiovascular stent tube cutting device, which has the following beneficial effects:

[0016] 1. The utility model is provided with a V-shaped plate, a bidirectional threaded rod, and a fixed plate. By adjusting the distance between the two V-shaped plates, the friction loss between the metal cylinder and the V-shaped plate can be compensated to prevent the occurrence of wear and loosening, thereby extending the service life of the bushing assembly product and realizing the positioning of metal cylinders of different diameters.

[0017] 2. The utility model is provided with grooves and balls. During the movement of the metal cylinder, rolling friction occurs between the balls and the surface of the metal cylinder, thereby reducing friction. During the relative movement of the V-shaped plates, the grooves can cause the two ends of the V-shaped plates to be inserted into each other in an offset manner, thereby increasing the relative movement distance of the two V-shaped plates, so that the two V-shaped plates can position metal cylinders within a larger diameter range.

[0018] 3. The utility model, by providing an elastic component and adjusting the depth of the sliding rod entering the connecting sleeve, can adjust the tension of the spring on the V-shaped plate, change the pressing force of the V-shaped plate on the metal cylinder, and avoid damage to the metal cylinder caused by excessive pressing.

[0019] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. The utility model has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the cardiovascular stent tube cutting device proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the bushing assembly of the cardiovascular stent tube cutting device proposed in the utility model;

[0022] Figure 3 This is a schematic diagram of the transmission structure of the rotating knob and the bidirectional threaded rod of the cardiovascular stent tube cutting device proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of the V-shaped plate of the cardiovascular stent tube cutting equipment proposed in the utility model.

[0024] In the figure: 1. workbench; 2. two-dimensional motion platform; 3. bushing assembly; 4. fixed frame; 5. laser cutting head; 6. housing; 7. V-shaped plate; 8. bidirectional threaded rod; 9. fixed plate; 10. rotating knob; 11. driven gear; 12. transmission gear; 13. driving gear; 14. connecting sleeve; 15. sliding rod; 16. spring; 17. groove; 18. ball. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Example 1

[0028] Cardiovascular stent tube cutting equipment, such as Figure 1 to Figure 2As shown, it includes a workbench 1, and a two-dimensional motion platform 2 is arranged on one side of the top outer wall of the workbench 1. The two-dimensional motion platform 2 is a commonly used technology in this field, so it is not described here. A chuck is arranged at one end of the two-dimensional motion platform 2, and a bushing assembly 3 is arranged on one side of the two-dimensional motion platform 2. A fixing frame 4 is fixed to the top outer wall of the workbench 1, and a laser cutting head 5 is connected to the outer wall of the bottom end of the fixing frame 4. The cutting head of the laser cutting head 5 is located on one side of the bushing assembly 3. The bushing assembly 3 includes a shell 6 and a V-shaped plate 7. The shell 6 is fixed to the top outer wall of the workbench 1, and the V-shaped plate 7 is slidably connected to the inner wall of the shell 6, and the two V-shaped plates 7 are arranged opposite to each other. The outer wall of the V-shaped plate 7 is detachably connected to a fixed plate 9, and two-way threaded rods 8 are arranged on both sides of the V-shaped plate 7. The fixed plate 9 is threadedly matched with the two-way threaded rod 8, and a driven gear 11 is connected to the top of the two-way threaded rod 8. A rotating button 10 is rotatably connected to the top of the shell 6, and the rotating shaft of the rotating button 10 is connected to a driving gear 13, and the driving gear 13 is transmitted and matched with the driven gear 11 through a transmission gear 12. Grooves 17 are opened on both sides of the V-shaped plate 7, and the grooves 17 are arranged in a straight line. The grooves 17 on the two V-shaped plates 7 are staggered, and the outer walls on the opposite sides of the two V-shaped plates 7 are rotatably connected to balls 18, and the balls 18 are arranged in an array.

[0029] During processing, the metal cylinder is clamped and fixed by the chuck on one side of the two-dimensional motion platform 2, one end of the metal cylinder passes through the shell 6 and the two V-shaped plates 7, and the rotating knob 10 is turned. The two-way threaded rod 8 is driven to rotate slowly through the transmission of the active gear 13, the transmission gear 12 and the driven gear 11, so that the V-shaped plate 7 moves relatively to limit the positioning of the metal cylinder, the surface of the ball 18 contacts the surface of the metal cylinder, and the laser cutting head 5 cuts the metal cylinder. The two-dimensional motion platform 2 drives the metal cylinder to move linearly and rotate synchronously, so that the laser cutting head 5 cuts according to the preset path. During the movement of the metal cylinder, rolling friction occurs between the ball 18 and the surface of the metal cylinder to reduce friction. During the relative movement of the V-shaped plate 7, the groove 17 can make the two ends of the V-shaped plate 7 staggered and inserted to increase the relative movement distance of the two V-shaped plates 7, so that the two V-shaped plates 7 can position the metal cylinder within a larger diameter range.

[0030] By providing a V-shaped plate 7, a bidirectional threaded rod 8, and a fixed plate 9, and by adjusting the distance between the two V-shaped plates 7, the friction loss between the metal cylinder and the V-shaped plate 7 can be compensated to prevent the occurrence of wear and loosening, thereby extending the service life of the bushing assembly 3 product and achieving the positioning of metal cylinders of different diameters.

[0031] By providing the groove 17 and the ball 18, rolling friction occurs between the ball 18 and the surface of the metal cylinder during the movement of the metal cylinder, thereby reducing the friction force. During the relative movement of the V-shaped plate 7, the groove 17 can make the two ends of the V-shaped plate 7 inserted into each other in an offset manner, thereby increasing the relative movement distance of the two V-shaped plates 7, so that the two V-shaped plates 7 can position the metal cylinder within a larger diameter range.

[0032] Example 2

[0033] Cardiovascular stent tube cutting device, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 3 to Figure 4 As shown, the V-shaped plate 7 is connected to the fixed plate 9 by an elastic component, and the elastic component includes a connecting sleeve 14 and a sliding rod 15. The connecting sleeve 14 is fixed to the outer wall of the V-shaped plate 7, and the sliding rod 15 is fixed to the outer wall of the fixed plate 9 and the V-shaped plate 7 on one side. The sliding rod 15 is longitudinally slidably matched with the inner wall of the connecting sleeve 14. A spring 16 is fixed to the inner wall of the connecting sleeve 14, and the two ends of the spring 16 are respectively connected to the connecting sleeve 14 and the sliding rod 15.

[0034] When the fixed plate 9 drives the V-shaped plate 7 to move, after the V-shaped plate 7 contacts the surface of the metal cylinder, the fixed plate 9 can continue to move, driving the sliding rod 15 to move inside the connecting sleeve 14, squeezing the spring 16. By adjusting the depth of the sliding rod 15 entering the connecting sleeve 14, the tension of the spring 16 on the V-shaped plate 7 can be adjusted, thereby changing the pressing force of the V-shaped plate 7 on the metal cylinder and avoiding damage to the metal cylinder caused by excessive pressing.

[0035] By setting the elastic component and adjusting the depth of the sliding rod 15 entering the connecting sleeve 14, the tension of the spring 16 on the V-shaped plate 7 can be adjusted, and the pressing force of the V-shaped plate 7 on the metal cylinder can be changed to avoid damage to the metal cylinder caused by excessive pressing.

[0036] Working principle: During processing, the metal cylinder is clamped and fixed by the chuck on one side of the two-dimensional motion platform 2. One end of the metal cylinder passes through the shell 6 and the two V-shaped plates 7. The rotating knob 10 is turned to drive the two-way threaded rod 8 to rotate slowly through the transmission of the driving gear 13, the transmission gear 12 and the driven gear 11, so that the V-shaped plates 7 move relatively to limit the positioning of the metal cylinder. When the V-shaped plate 7 contacts the surface of the metal cylinder, the fixed plate 9 can continue to move, driving the sliding rod 15 to move inside the connecting sleeve 14 and squeeze the spring 16. By adjusting the depth of the sliding rod 15 entering the connecting sleeve 14, the tension of the spring 16 on the V-shaped plate 7 can be adjusted to change the The V-shaped plate 7 exerts a pressing force on the metal cylinder to avoid damage to the metal cylinder caused by excessive pressing; the surface of the ball 18 contacts the surface of the metal cylinder, the laser cutting head 5 cuts the metal cylinder, and the two-dimensional motion platform 2 drives the metal cylinder to move linearly and rotate synchronously, so that the laser cutting head 5 cuts according to the preset path. During the movement of the metal cylinder, rolling friction occurs between the ball 18 and the surface of the metal cylinder to reduce the friction force. During the relative movement of the V-shaped plate 7, the groove 17 can make the two ends of the V-shaped plate 7 offset and inserted into each other, thereby increasing the relative movement distance of the two V-shaped plates 7, so that the two V-shaped plates 7 can position metal cylinders within a larger diameter range.

[0037] 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 cardiovascular stent tube cutting device, comprising a workbench (1), characterized in that: A two-dimensional motion platform (2) is arranged on one side of the outer wall at the top of the workbench (1), and a bushing assembly (3) is arranged on one side of the two-dimensional motion platform (2). The bushing assembly (3) comprises a shell (6) and a V-shaped plate (7). The shell (6) is fixed to the outer wall at the top of the workbench (1), and the V-shaped plate (7) is slidably connected to the inner wall of the shell (6). The two V-shaped plates (7) are arranged opposite to each other, and a fixing plate (9) is detachably connected to the outer wall of the V-shaped plate (7). Bidirectional threaded rods (8) are arranged on both sides of the V-shaped plate (7), and the fixing plate (9) is threadably matched with the bidirectional threaded rod (8).

2. The cardiovascular stent tube cutting device according to claim 1, characterized in that: The top end of the bidirectional threaded rod (8) is connected to a driven gear (11), the top end of the housing (6) is rotatably connected to a rotating knob (10), the rotating shaft of the rotating knob (10) is connected to a driving gear (13), and the driving gear (13) is transmission-matched with the driven gear (11) via a transmission gear (12).

3. The cardiovascular stent tube cutting device according to claim 1, characterized in that: A chuck is provided at one end of the two-dimensional motion platform (2), and a fixing frame (4) is fixed to the outer wall of the top end of the workbench (1).

4. The cardiovascular stent tube cutting device according to claim 3, characterized in that: The outer wall of the bottom end of the fixing frame (4) is connected to a laser cutting head (5), and the cutting head of the laser cutting head (5) is located on one side of the bushing assembly (3).

5. The cardiovascular stent tube cutting device according to claim 1, characterized in that: Grooves (17) are provided on both sides of the V-shaped plate (7), the grooves (17) are arranged in a straight line, and the grooves (17) on the two V-shaped plates (7) are staggered.

6. The cardiovascular stent tube cutting device according to claim 5, characterized in that: The outer walls of the two V-shaped plates (7) on the opposite side are both rotatably connected with balls (18), and the balls (18) are arranged in an array.

7. The cardiovascular stent tube cutting device according to claim 1, characterized in that: The V-shaped plate (7) and the fixed plate (9) are connected via an elastic component, wherein the elastic component comprises a connecting sleeve (14) and a sliding rod (15), wherein the connecting sleeve (14) is fixed to the outer wall of the V-shaped plate (7), and the sliding rod (15) is fixed to the outer wall of the fixed plate (9) on one side adjacent to the V-shaped plate (7).

8. The cardiovascular stent tube cutting device according to claim 7, characterized in that: The sliding rod (15) is longitudinally slidably matched with the inner wall of the connecting sleeve (14); a spring (16) is fixed to the inner wall of the connecting sleeve (14); and two ends of the spring (16) are respectively connected to the connecting sleeve (14) and the sliding rod (15).

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