A drug balloon catheter with blocking function

Abstract

The application provides a drug balloon catheter with a blocking function, the drug balloon catheter includes an outer tube, an intermediate tube, a perfusion tube and an inner tube in sequence from the outer layer to the inner layer, the inner tube and the perfusion tube The distal end of the tube protrudes from the distal end of the intermediate tube, and the drug balloon catheter also includes a drug balloon assembly, a proximal balloon and a distal end located at the proximal and distal ends of the drug balloon assembly, respectively. A balloon, the distal and proximal ends of the proximal balloon are connected to the outer wall of the outer tube, the proximal end of the distal balloon is connected to the distal end of the intermediate tube, the The distal end of the distal balloon is connected to the outer wall of the perfusion tube, the gap between the intermediate tube and the perfusion tube communicates with the inner cavity of the distal balloon, and the drug balloon The proximal end and the distal end of the balloon assembly are connected to the outer wall of the outer tube, the drug balloon assembly is located between the distal balloon and the proximal balloon, and the proximal end of the perfusion tube is connected to the inner tube. on the outer wall of the tube.

Description

technical field [0001] The application relates to a drug balloon catheter with a blocking function. Background technique [0002] In recent years, with the rapid development of neuroimaging, catheter technology, materials, and computers, endovascular interventional technology has become increasingly mature in the treatment of vascular diseases, and has been affirmed by doctors and patients for its minimally invasive, safe, and effective features. At present, it has become one of the important treatment methods for vascular diseases. [0003] In the interventional treatment method, a balloon catheter is needed. The balloon catheter is a tool for angioplasty. The balloon is sent into the atherosclerosis and stenosis through the guide wire and the guiding catheter, and the balloon is expanded with pressure. It is a very effective new technology in the treatment of cardiovascular diseases in recent years, which can crack plaque, expand blood vessels, and improve blood flow. Ho...

AI Technical Summary

Problems solved by technology

[0012] 3. The drug adheres to the wall for a short time, and it is difficult to be absorbed by the blood vessel wall in large quantities, so that a good therapeutic effect cannot be achieved;

[0013] 4. The drug coating is easy to fall off and produce particles, which is easy to produce thrombus

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