Coronary artery protection catheter for percutaneous aortic valve replacement, and use method for coronary artery protection catheter

Abstract

The invention discloses a coronary artery protection catheter for a percutaneous aortic valve replacement, and a use method for the coronary artery protection catheter. The coronary artery protectioncatheter comprises a head tube and a tail tube and is characterized in that the shape of the head tube is a three-dimensional annular vortex shape; the head tube is provided with a plurality of firstthrough small holes for through connection; the inner end of the head tube is an open end; the outer end of the head tube is provided with a first catheter body for fixed through connection; the firstcatheter body is provided with the tail tube for bent through connection; the tail tube is provided with second through small holes; and the tail end of the tail tube is provided with a leading-in hole for fixed connection. The device simplifies an operation process through the head tube, the first catheter body and the tail tube, wherein the head tube, the first catheter body and the tail tube are made of elastic medical materials. In addition, in a process, the coronary artery orifice can prevent from being injured. When the coronary artery orifice is blocked after an artificial valve is implanted, blood can reach the holes on the head tube via a central cavity through the holes on the tail tube so as to supply the blood to the coronary sinus and the coronary artery.

Description

technical field [0001] The invention relates to the field of surgical tools, in particular to a coronary protection catheter for percutaneous aortic valve replacement and a method for using the same. Background technique [0002] Percutaneous aortic valve replacement has become one of the important methods for the treatment of senile aortic stenosis. Coronary artery obstruction is one of the serious complications that may occur during surgery. Although the incidence rate is less than 1%, once it occurs, the fatality rate is high. For patients with a high risk of obstruction in preoperative analysis, the method of presetting a balloon or coronary stent in the coronary artery is currently mainly used, and the operation is complicated. During the process of valve insertion, the guiding catheter needs to be pulled up to prevent the guiding catheter from being damaged. At the ostium of the coronary artery, attention should be paid to the movement of intracoronary devices; antico...

AI Technical Summary

Problems solved by technology

Coronary artery obstruction is one of the serious complications that may occur during surgery. Although the incidence rate is less than 1%, once it occurs, the fatality rate is high

For patients with a high risk of obstruction in preoperative analysis, the method of presetting a balloon or coronary stent in the coronary artery is currently mainly used, and the operation is complicated. During the process of valve insertion, the guiding catheter needs to be pulled up to prevent the guiding catheter from being damaged. At the ostium of the coronary artery, attention should be paid to the movement of intracoronary devices; anticoagulant strength needs to be strengthened to prevent the risk of complications such as coronary thrombosis; the cost is high, and guiding catheters, guide wires, stents or balloon

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