Shock wave balloon catheter with integrated electric field generating mechanism

Abstract

The invention relates to a shock wave balloon catheter with an integrated electric field generating mechanism. The shock wave balloon catheter comprises a long and thin component extending in the axial direction, a working balloon body arranged at the far end of the long and thin component, transmission wires and a liquid injection pipe which are arranged in a cavity of the long and thin component, an integrated electric field generating mechanism arranged in the working balloon body and a micropore mechanism wrapping the integrated electric field generating mechanism, and the working balloon body is in fluid communication with the liquid injection pipe; the integrated electric field generating mechanism at least comprises two wires, each wire is provided with a non-insulating area, a target electric field can be formed between the non-insulating areas, and the integrated electric field generating mechanism is electrically connected with external equipment through the transmission wires; the micropore mechanism is an electric insulating component; the micropore mechanism is provided with one or more micropores penetrating through the wall of the micropore mechanism, and the micropores can prevent liquid from entering through the surface tension of the micropores, so that the micropore mechanism can isolate the integrated electric field generating mechanism from the liquid flowing into the working balloon body.

Description

technical field [0001] The application belongs to the field of minimally invasive interventional therapy, and in particular relates to a shock wave balloon catheter with an integrated electric field generating mechanism. Background technique [0002] With the aging of the population and the improvement of living standards, the incidence of vascular diseases is increasing year by year. As the blood vessel condition progresses, plaque in the blood vessel walls evolves into calcium deposits, which narrow the arteries and restrict blood flow. When a vessel is calcified, the main existing routines are balloon dilation, stent implantation, or atherectomy of the plaque with an atherectomy balloon. However, these treatments have significant drawbacks and are often accompanied by vascular damage and complications. Intimal tearing occurs during balloon dilation and stent implantation, which often results in endothelial hyperplasia and risk of restenosis. [0003] In order to solve ...

AI Technical Summary

Problems solved by technology

However, there is a problem with this method that the electric field is directly applied inside the liquid, which requires a high electric field strength and a large current output to generate shock waves of sufficient strength.

Once the balloon is damaged and leaks, high voltage and strong current will pass through the human body, which will cause serious electric shock accidents and even endanger the lives of patients and medical staff

In addition, the existing shock wave balloon catheters apply an electric field by setting electrode rings, and the diameter of the catheter after the working balloon is crimped (Profile) is relatively large

However, the crimping diameter (Profile) of the working balloon of the catheter is the core factor that limits the passage of the catheter. The larger diameter (Profile) limits the clinical application of the catheter. Therefore, it is difficult for the existing shock wave balloon catheter It can be applied in fields such as coronary arteries with relatively high passability requirements and small diameter blood vessels

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