Seismic wave balloon catheter and seismic wave equipment
By designing the insulated wires to be tightly attached to the outer wall of the push tube and then fitted into the protective tube within the shockwave balloon conduit, the problems of wire folding and paint damage are solved, achieving more efficient assembly and reliable use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-04-07
AI Technical Summary
Existing insulated wires are prone to kinking and paint damage during assembly and use, leading to the failure of the shockwave balloon catheter. Furthermore, the assembly of multiple wires is complex.
The design employs an insulated wire that is tightly attached to the outer wall of the push tube and inserted into the protective tube. The protective tube secures the insulated wire, preventing folding and paint damage, and simplifying the threading process.
It reduces the incidence of wire folding and paint damage, and improves assembly efficiency and the reliability of conduit use.
Smart Images
Figure CN224085380U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically to a shockwave balloon catheter and shockwave device. Background Technology
[0002] Intravascular lithotripsy (IVL) is used to destroy calcified lesions in blood vessels. The IVL device consists of two main hardware components: a balloon catheter and a main unit. One or more electrodes that generate shock waves are placed inside the balloon of the catheter and connected to one or more insulated wires. These wires run through the entire working section of the balloon catheter and are then connected to the main unit connector at the end of the catheter. Under the control of the main unit, one or more electrodes release shock waves simultaneously or at different times, thereby breaking up the calcified lesion tissue.
[0003] Currently used insulated wires, such as enameled wire and magnet wire, consist of a conductor wrapped in a thin layer of insulating material. This thin insulating material can be polyurethane, polyimide, etc., with a thickness of less than 0.05 mm. During assembly, because the wire is relatively long, usually exceeding 1 meter, and very thin (0.1-0.2 mm outer diameter), and the outer enamel film of the insulated wire is very thin, the wire body is easily kinked and the enamel surface damaged during the assembly of the wire with the balloon catheter and during the insertion of the balloon into the blood vessel. This can lead to the failure of the balloon catheter to generate shock waves.
[0004] In view of the above, this application is hereby submitted. Utility Model Content
[0005] This invention provides a shockwave balloon catheter to solve at least one of the above-mentioned technical problems.
[0006] A shockwave balloon catheter includes a balloon, a push tube, an insulated wire, and a protective tube. The balloon is provided with a shockwave generating part; the push tube is used to push the balloon; the insulated wire is disposed close to the outer wall of the push tube along the length direction of the push tube; and the protective tube is sleeved on the outside of the insulated wire.
[0007] Preferably, the inner wall of the protective tube is in close contact with the insulated wire, and the protective tube is made of medical rubber, silicone, medical-grade elastic plastic, resin material or heat-shrinkable material.
[0008] Preferably, the protective tube is interference-fitted onto the outside of the insulated conductor.
[0009] Preferably, the protective tube is a heat shrinkable sleeve.
[0010] Preferably, the insulated wire and the push tube are tightly fitted together by adhesive bonding, welding, or heat shrinking.
[0011] Preferably, the balloon includes an insulating inner tube, an outer balloon, and electrodes. The insulating inner tube is located at the distal end of the push tube, and the insulating wire extends to the insulating inner tube to connect with the electrodes inside the outer balloon.
[0012] Preferably, the balloon further includes a radiopaque ring disposed within the outer balloon.
[0013] Preferably, the material of the push tube is hyaluronic acid tube, PABEX, PA, PU or PEEK, and there are at least two insulated wires, with multiple insulated wires distributed circumferentially and closely attached to the outside of the hyaluronic acid tube.
[0014] Preferably, it also includes a catheter port, which includes a wire connection port and a pressurization port, the proximal end of the insulated wire passing through the wire connection port and connected to the shock wave generator, and the pressurization port for supplying fluid into the balloon.
[0015] A shockwave device is also provided, comprising a shockwave balloon catheter as described above and a device host, the device host being used to output pulse energy to the shockwave balloon catheter.
[0016] This invention's shockwave balloon catheter reduces the incidence of wire kinking and scratches on the tube's paint surface during use by placing the insulated wire tightly against the push tube and securing them together inside the protective tube. Furthermore, since the insulated wire is not located inside the push tube, even with a large number of insulated wires, the size of the push tube's pressurized cavity does not need to be changed, simplifying the threading process. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the shockwave balloon catheter according to the first embodiment of this utility model;
[0018] Figure 2 yes Figure 1 A schematic diagram showing the structure of the distal electrode;
[0019] Figure 3 yes Figure 1 A structural diagram illustrating the relationship between the push tube, insulated wire, and protective tube;
[0020] Figure 4 yes Figure 3 A cross-sectional structural diagram;
[0021] Figure 5 yes Figure 1 A cross-sectional structural diagram of the balloon and outer tube structure;
[0022] Figure 6This is a cross-sectional structural schematic diagram of the second embodiment of the present invention;
[0023] Figure 7 This is a partial structural schematic diagram of a preferred embodiment of the present invention.
[0024] Figure label:
[0025] 1. Balloon; 11. Insulating inner tube; 12. Outer balloon; 13. Electrode; 14. Imaging ring; 2. Push tube; 3. Insulating wire; 4. Protective tube; 5. Catheter port; 51. Wire connection port; 52. Pressurization port; 6. Outer tube; 61. Guide wire quick exchange port. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0028] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0029] Example 1
[0030] Please refer to Figures 1 to 4 A shock wave balloon catheter includes a balloon 1, a push tube 2, an insulated wire 3, and a protective tube 4.
[0031] The balloon 1 is equipped with a shock wave generator; the push tube 2 is used to push the balloon 1; the insulated wire 3 is tightly attached to the outer wall of the push tube 2 along its length; the protective tube 4 is sleeved on the outside of the insulated wire 3. The insulated wire can be enameled wire or electromagnetic wire, etc.
[0032] By placing the insulated wire 3 tightly against the push tube 2 and securing it together inside the protective tube 4, the incidence of wire kinking and scratches on the paint surface of the push tube 2 opening is reduced during use. Furthermore, since the insulated wire 3 is not placed inside the push tube 2, even with a large number of insulated wires 3, the size of the pressurized inner cavity of the push tube 2 does not need to be adjusted, making the wire threading process simpler.
[0033] There are several ways to make the insulated wire 3 closely attached to the outer wall of the push tube 2. Please refer to [the relevant documentation]. Figure 3 and Figure 4 In this embodiment, the inner wall of the protective tube 4 is in close contact with the insulated wire 3, so that the insulated wire 3 is always in close contact with the push tube 2.
[0034] The protective tube can be made of medical-grade rubber, silicone, medical-grade elastic plastic, resin material, or heat-shrinkable material.
[0035] Preferably, the protective tube can be a heat-shrinkable sleeve, which can fix the insulated wire tightly to the outside of the push tube through heat shrinking. This not only makes it easy to tightly wrap the insulated wire 3 to the outer wall of the push tube 2, but also minimizes the outer diameter of the conduit.
[0036] Heat shrink tubing gets its name from its radial shrinkage. During production, heat shrink tubing is heated to a highly elastic state, subjected to a load to expand, and then rapidly cooled to fix its shape. In use, heating the tubing returns it to its highly elastic state, causing it to shrink and tightly wrap around the object. Heat shrink tubing is available in various materials, such as polyolefins, polyvinyl chloride (PVC), fluoroplastics (PTFE, FEP), silicone rubber, polyester (PET), and cross-linked polyethylene (XLPE).
[0037] In other preferred embodiments, the protective tube 4 is interference-fitted onto the outside of the insulated wire 3, making the fit between the insulated wire 3 and the push tube 2 more secure. Since the push tube 2 and the insulated wire 3 have very little elasticity due to material issues, the protective tube 4 is made of an elastic material, such as medical rubber, silicone, medical-grade elastic plastic, resin material, etc.
[0038] Please refer to Figure 2The balloon 1 includes an insulating inner tube 11, an outer balloon 12, and an electrode 13. The insulating inner tube 11 is located at the distal end of the push tube 2. The insulating wire 3 extends to the insulating inner tube 11 to connect with the electrode 13 inside the outer balloon 12. The balloon 1 also includes a radiographic ring 14 disposed within the outer balloon 12. The electrode 13 used in shock wave lithotripsy mainly consists of an inner electrode 13, an outer electrode 13, an intermediate insulating layer separating the inner and outer electrodes 13, and an insulating wire 3 connecting the electrode 13.
[0039] Please refer to Figure 1 It also includes an outer tube 6 sleeved outside the protective tube 4, and the outer tube 6 has a guide wire quick exchange port 61. Please refer to... Figure 5 The end of the insulating inner tube 11 extends toward the outer tube 6 to form a guide wire quick exchange port 61.
[0040] Please refer to Figure 1 It also includes a catheter port 5, which includes a wire connection port 51 and a pressurization port 52. The proximal end of the insulated wire 3 passes through the wire connection port 51 and is connected to the shock wave generator. The pressurization port 52 is used to provide pressurization fluid, such as a mixture of saline and contrast agent, to the balloon 1.
[0041] Example 2
[0042] Based on the first embodiment, please refer to Figure 6 The difference is that there are four insulated wires 3, which are distributed circumferentially and closely attached to the outside of the push tube 2.
[0043] Because blood vessels vary in length, while the shockwave coverage area generated by the electrodes 13 within balloon 1 is fixed, the number of electrodes 13 within balloon 1 increases with the length of the blood vessel to meet clinical needs. For example, balloon 1 used to treat long peripheral blood vessels may have as many as 6-8 electrodes 13, and at least two insulated wires 3 are generally used to connect the electrodes 13. The number of insulated wires 3 directly affects the assembly efficiency and ease of assembly of the overall catheter. Since the diameter of the insulated wires 3 is often much smaller than the diameter of the push tube 2, multiple insulated wires 3 can be distributed circumferentially around the push tube 2.
[0044] Furthermore, the push tube 2 is a metal hyaluronic acid tube 2, which is a specially treated metal tube with strong toughness and elasticity, as well as a certain degree of rigidity, to ensure that the ball bag 1 is accurately pushed to the target position.
[0045] In other embodiments, preferably, there are at least two insulated wires 3, and multiple insulated wires 3 are circumferentially distributed and closely attached to the outside of the push tube 2.
[0046] There are several ways to tightly attach the insulated wire 3 to the outer wall of the push tube 2. In a preferred embodiment, the insulated wire 3 and the push tube 2 are tightly fitted together by adhesive. In other embodiments, other methods can also be used for fitting and fixing.
[0047] The push tube 2 can serve as a pressurization chamber for transporting liquid. Please refer to [reference needed]. Figure 7 In one embodiment, the protective tube 4 on the outside of the push tube 2 is sealed and inserted into the outer tube 6, so that the insulating wire 3 between the protective tube 4 and the push tube 2 extends into the balloon inside the outer tube 6. The protective tube 4 seals the port of the push tube 2 to prevent liquid from leaking out from the gap between the protective tube 4 and the push tube 2.
[0048] Furthermore, this application also provides a shockwave device, including the shockwave balloon catheter described above and a device main unit. The device main unit is equipped with a high-voltage pulse output module for outputting pulse energy to the shockwave balloon catheter. An external inflation device is connected to the inflation port of the catheter to inflate the balloon catheter.
[0049] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.
Claims
1. A shockwave balloon catheter, characterized in that, include, The balloon contains a shock wave generator. The push tube is used to push the balloon. An insulated wire is provided close to the outer wall of the push tube along the length of the push tube. A protective tube is fitted over the outside of the insulated wire.
2. The shockwave balloon catheter according to claim 1, characterized in that, The inner wall of the protective tube is in close contact with the insulated wire, and the protective tube is made of medical rubber, silicone, medical-grade elastic plastic, resin material or heat-shrinkable material.
3. The shockwave balloon catheter according to claim 2, characterized in that, The protective tube is interference-fitted onto the outside of the insulated conductor.
4. The shockwave balloon catheter according to claim 1, characterized in that, The protective tube is a heat shrinkable sleeve.
5. The shockwave balloon catheter according to claim 1, characterized in that, The insulated wire and the push tube are tightly fitted together by adhesive bonding, welding, or heat shrinking.
6. The shockwave balloon catheter according to claim 1, characterized in that, The balloon includes an insulating inner tube, an outer balloon, and electrodes. The insulating inner tube is located at the distal end of the push tube, and the insulating wire extends to the insulating inner tube to connect with the electrodes inside the outer balloon.
7. The shockwave balloon catheter according to claim 6, characterized in that, The balloon also includes a radiopaque ring disposed within the outer balloon.
8. The shockwave balloon catheter according to claim 1, characterized in that, The push tube is made of sodium hypochlorite, PABEX, PA, PU or PEEK, and there are at least two insulated wires, with multiple insulated wires distributed circumferentially and closely attached to the outside of the push tube.
9. The shockwave balloon catheter according to claim 1, characterized in that, It also includes a catheter port, which includes a wire connection port and a pressurization port. The proximal end of the insulated wire passes through the wire connection port and is connected to the shock wave generator. The pressurization port is used to supply fluid into the balloon.
10. A seismic wave device, characterized in that, The device includes the shockwave balloon catheter and device host as described in any one of claims 1 to 9, wherein the device host is used to output pulse energy to the shockwave balloon.