Improved structure of shock wave balloon catheter

Abstract

The utility model discloses an improved structure of a shock wave balloon catheter, which comprises a balloon body and a catheter, at least one elastic woven mesh layer capable of being filled with the balloon body is arranged outside the balloon body, and the woven mesh layer at least covers a working section of the balloon body. Compared with the prior art, the woven mesh layer is at least arranged outside the working section of the balloon body, so that the high-pressure resistance and the safety of the balloon body are improved, and compared with a common high-pressure balloon body, mechanical external force can be increased, and the crushing and calcification effects can be improved.

Description

Technical Field

[0001] This utility model relates to a medical device, and more particularly to an improved structure of a shockwave balloon catheter. Background Technology

[0002] Shockwave balloons have been widely used in surgeries such as those for vascular calcification. Compared to shockwave balloons, shockwave balloons have demonstrated higher safety and can accommodate wider pulse widths, meaning they can function stably during calcification surgery. However, the risk of balloon rupture during surgery remains, and this potential risk remains a problem to be solved. If the balloon ruptures during surgery, it will not only affect the smooth progress of the procedure but may also threaten the patient's life. Therefore, improving balloon safety has become one of the important directions of current medical research.

[0003] While conventional high-pressure balloons offer significant safety advantages, they may not be sufficient to achieve the desired therapeutic effect in the treatment of vascular calcification. Sometimes they fail to effectively break up calcified plaques, and multiple surgeries are sometimes required to achieve the desired outcome. This not only wastes medical resources but also increases the patient's suffering and financial burden. Utility Model Content

[0004] The purpose of this invention is to provide an improved structure for a shockwave balloon catheter, and the technical problem to be solved is to improve the safety of the shockwave balloon and the effect of breaking up calcification.

[0005] To solve the above problems, the present invention adopts the following technical solution: an improved structure of a shock wave balloon catheter, including a balloon body and a catheter, wherein the balloon body is provided with at least one elastic braided mesh layer that can be inflated together with the balloon body, and the braided mesh layer at least covers the working section of the balloon body.

[0006] Furthermore, the woven mesh layer is fixed to the outer peripheral wall of the balloon body.

[0007] Furthermore, the woven mesh layer is adhered and fixed to the outer peripheral wall of the balloon body using UV adhesive.

[0008] Furthermore, an external adhesive layer is coated on the outer surface of the woven mesh layer.

[0009] Furthermore, the outer adhesive layer is TPU adhesive.

[0010] Furthermore, the woven mesh layer is made of ultra-high molecular weight polyethylene.

[0011] Compared with the prior art, this utility model improves the high pressure resistance and safety of the balloon body by setting a woven mesh layer at least outside the working section of the balloon body. Compared with ordinary high pressure balloon bodies, it can enhance the mechanical external force and improve the effect of breaking up calcification. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 yes Figure 1 A cross-sectional view along the AA direction.

[0014] Figure 3 This is a schematic diagram of the discharge process of a conventional spherical shockwave balloon.

[0015] Figure 4 This is a schematic diagram of the discharge process of the spherical capsule of this utility model. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] In this invention, the distal end refers to the end furthest from the surgeon; the proximal end refers to the end closest to the surgeon.

[0018] This utility model discloses an improved structure of a shock wave balloon catheter. In this utility model, the improvement is only in the structure of the balloon body, and the rest of the parts are not modified.

[0019] like Figure 1 and Figure 2 As shown, the shockwave balloon catheter includes a balloon body 1 and a catheter 2. At least the working section of the balloon body 1 is covered with an elastic braided mesh layer 3 that can be inflated along with the balloon body 1. The braiding density of the braided mesh layer 3 can be determined according to the fatigue strength and burst pressure (RPB) required by the balloon body, and is not specifically limited here. Generally, the spacing between the braided lines in the braided mesh layer 3 is 0.8 mm.

[0020] The woven mesh layer 3 is made of ultra-high molecular weight polyethylene (UHMWPE) material.

[0021] By covering the balloon with a woven mesh layer 3, the burst pressure of the balloon can be increased from 10 kPa to 40-50 kPa.

[0022] In this invention, the woven mesh layer 3 covers the entire balloon body 1. The woven mesh layer 3 is attached and fixed to the outer peripheral wall of the balloon body 1 by UV adhesive. The thickness of the UV adhesive is 50 micrometers. The adhesive is evenly applied to the outer peripheral wall of the balloon body using a five-step scraping method. Then, the woven thread is wound onto the outer surface of the balloon body by wrapping.

[0023] like Figure 2 As shown, an outer adhesive layer 4 is applied to the outer surface of the woven mesh layer 3. The outer adhesive layer 4 can be made by fully coating with TPU adhesive, and the thickness of the outer adhesive layer 4 can be 50 micrometers.

[0024] like Figure 3 As shown, when a conventional shockwave balloon is in operation, the discharge process of the shockwave generator inside the balloon will cause irregular pressure deformation of the outer wall of the balloon, which can easily lead to uneven pressure on the balloon and rupture.

[0025] like Figure 4 As shown, when the shockwave balloon of this invention is working, its burst pressure is increased due to the woven mesh layer 3 on the outside of the balloon. Thus, when the shockwave generator inside the balloon discharges, the outer wall of the balloon will not undergo irregular deformation after being compressed. Compared with ordinary shockwave balloons, it can improve RPB and safety, and compared with ordinary balloons, it can increase mechanical external force and enhance the effect of breaking up calcification.

Claims

1. Shockwave balloon catheter improvement, comprising a balloon body (1) and a catheter (2), characterized in that: The balloon body (1) is provided with at least one layer of woven mesh layer (3) which can be inflated together with the balloon body (1) and has elasticity, and the woven mesh layer (3) covers at least the working section of the balloon body (1); the woven mesh layer (3) is fixed on the outer peripheral wall of the balloon body (1).

2. The shockwave balloon catheter improvement of claim 1, wherein: The woven mesh layer (3) is fixed on the outer peripheral wall of the balloon body (1) by UV glue.

3. The shockwave balloon catheter improvement of claim 2, wherein: An outer glue layer (4) is coated on the outer surface of the woven mesh layer (3).

4. The shockwave balloon catheter improvement of claim 3, wherein: The outer glue layer (4) is TPU glue.

5. The shockwave balloon catheter improvement of any one of claims 1-4, wherein: The woven mesh layer (3) is made of ultra-high molecular weight polyethylene.

Images