Medicine eluting balloon catheter with function of rupture and thrombolytic thrombus aspiration

Abstract

The invention discloses a medicine eluting balloon catheter with a function of thrombus aspiration and vasodilatation, and belongs to the field of medical device. The catheter structure comprises a balloon cavity 1, an auxiliary cavity 2, a RX port 3, a guide wire cavity 4, a developing ring 5, a suction cavity 6 and a Y-type connector 7. The balloon cavity is in the outermost layer of the suctioncatheter, the auxiliary cavity 2 is on the inner wall of the suction cavity 6, and the guide wire cavity 4 is on the distal end inner wall of the suction cavity 6. The medicine eluting balloon catheter is used for medicine thrombolysis by injecting thrombolytic medicine into the suction cavity 6. The invention of the medicine eluting balloon catheter is set an auxiliary chamber on the inner wallof the suction cavity 6, applying the improved in vitro ultrasonic assisted thrombolysis (ETUS) function, and a small metal microporous cylinder is placed in human body by the auxiliary cavity 2 conveying system; the medicine eluting balloon catheter reflects multiple direction ultrasonic wave through in vitro ultrasonic probe ultrasound and porous cylinder to amplify ultrasonic cavitation effect,improving the efficiency of broken bolt, and feeds into the interference wire through the auxiliary cavity 2 to break the bolt with mechanical force.

Description

technical field [0001] The invention relates to the field of medical instruments. In particular, it relates to a drug-eluting balloon catheter with the functions of ultrasonic thrombus-breaking drug thrombolysis, thrombus suction and angioplasty. Background technique [0002] Data show that the number of cardiovascular diseases in my country has reached 230 million, among which, the number of patients with acute myocardial infarction (AMI) has exceeded 2 million, and at least 500,000 to 800,000 new cases occur each year, and the trend is increasing year by year. The number of infarcts exceeds 1 million. It is predicted that from 2015 to 2030, there will be 21 million new acute coronary patients and at least 7 million cardiac deaths in China. In the world, the figures released by the American Heart Association (AHA) in 2013 showed that in 2009, 236.1 people died of cardiovascular diseases per 100,000 people in the United States, accounting for 32.3% of the total deaths, and ...

AI Technical Summary

Problems solved by technology

[0007] CN107468306A discloses a thrombus aspiration catheter, which specifically includes a catheter body, a soft head and an expandable tracer embedded in the soft head are arranged at the distal end of the catheter body; the distal soft head and the expandable tracer It can effectively increase the radial cross-sectional area of ​​the suction hole and the suction chamber, and solve the problems of suction efficiency and thrombus shedding due to the small radial cross-sectional area of ​​the suction chamber

[0008] CN104586470A discloses a thrombus aspiration catheter, which includes a catheter body and a guide wire lumen arranged at the advancing end of the catheter body. The thrombus aspiration catheter provided hopes to solve the problem of low suction rate caused by a small radial cross-sectional area. , The problem that the suction chamber is easy to block

At present, ultrasound direct thrombolysis mainly uses a small catheter probe to ablate thrombus in the cavity, which has been applied in clinical practice and has achieved good thrombolytic effect, but it cannot be popularized because of its invasiveness and high operation requirements. Thrombolytic therapy (ETUS) has certain advantages and better adaptability compared with in vivo microprobe ultrasound therapy

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