Balloon catheter provided with side holes

Abstract

The invention relates to a balloon catheter provided with side holes. The balloon catheter comprises a balloon, a catheter body and a guide wire, wherein in the catheter body, an inner tube passes through from the interior of an outer tube, and two ends of the inner tube are provided with openings, so that a guide wire cavity is formed; an annular gap formed between the inner tube and the outer tube is a pressurizing cavity; furthermore, on the section, close to the proximal end of the balloon, of the catheter, the pressurizing cavity of the section is divided into a closing portion and a communicating portion in a peripheral direction; by virtue of the closing portion, the outer tube of the portion is firmly connected to the inner tube, and through holes are formed in the closing portion; by virtue of the through holes, blood can circulate by virtue of the inner tube when the balloon gets dilated; and by virtue of the communicating portion, the balloon communicates with an external pressurizing system through the catheter body. The balloon catheter provided by the invention is just on the basis of slight improvement of existing balloon catheters on the market and the structures of the existing balloon catheters are not changed, and the problem of increasing the outer diameter of the catheter is avoided; the tracing property, passing property and passing ability of the finished product (the balloon catheter) are guaranteed; blood circulation is guaranteed while balloon dilation is achieved; and a dilation duration is prolonged and a treatment effect is enhanced.

Description

technical field [0001] The invention belongs to the technical field of interventional medical devices, in particular to a balloon catheter with a side hole. Background technique [0002] Balloon catheter is an angioplasty tool that has been widely used in interventional treatment of endovascular diseases. The use of balloon catheters in surgery is as follows: under the guidance of medical imaging equipment, various auxiliary devices, such as guide wires and guiding catheters, are inserted percutaneously, and then the balloon catheter is set along the guide wire. The "track" is pushed forward until it reaches the target vessel. Through the pressure device and the expansion medium, the balloon is expanded to expand the lumen of the blood vessel to achieve the purpose of blood vessel reconstruction. [0003] The balloon part of the balloon catheter is usually cylindrical, and the balloon part needs to expand the lumen of the blood vessel during the operation. After the expans...

AI Technical Summary

Problems solved by technology

Both of these two solutions increase the outer diameter of the catheter, resulting in poor tracking, pushability and passability during the operation. During the implantation operation, the operator’s work is more difficult, and it may even cause unnecessary inconvenience to the patient. Injury, increase patient suffering, pose medical risk

At the same time, there are still problems of large changes to the existing balloon catheter and insufficient rigidity of the catheter

[0005] Therefore, the products with the above structure have not been popularized and applied basically, and the structure of the balloon catheter product used on the market still only has the conventional balloon catheter that blocks blood flow during use.

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