Interventional ultrasonic thrombolysis device

Abstract

The present invention proposes an interventional ultrasonic thrombolysis device, which includes: a catheter body, the catheter body includes an outer tube and an inner tube, and the outer tube covers the outside of the inner tube; an ultrasonic transducer, the ultrasonic transducer A device is sheathed on the end of the catheter body, the ultrasonic transducer is suitable for generating ultrasonic waves along the radial direction of the catheter body; and an insulating shell, the insulating shell seals the shell of the ultrasonic transducer. The device of the present invention utilizes an ultrasonic transducer polarized in the thickness direction to apply ultrasound to the end of the thrombus, the ultrasound generates a cavitation effect to tear the thrombus, the ultrasonic energy promotes the penetration of thrombolytic drugs into the thrombus, and increases the effective area of ​​thrombolytic drugs. Accelerate thrombus dissolution and realize the purpose of dissolving thrombus from the beginning to the end. Non-intrusive thrombolysis has little damage to blood vessels, and is especially suitable for old thrombus.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular, the invention relates to an interventional ultrasonic thrombolysis device. Background technique [0002] Thrombosis is one of the common diseases in clinical practice. It can be generally divided into acute fresh thrombus and old thrombus. The old thrombus is hard in texture and firmly adheres to the vessel wall. Most patients with smaller old thrombus within 2-4 weeks can completely absorb themselves , and for large old thrombi, it is generally difficult to absorb by itself, and some patients can only be polarized and recanalized, but cannot be completely absorbed. [0003] Studies have shown that applying ultrasound on the basis of transcatheter thrombolysis (CDT) can enhance the thrombolytic effect of drugs, and ultrasound can induce cavitation effects, generate shear force and micro-jet energy, and tear thrombus, increasing Reduce the contact area between the drug and the thro...

AI Technical Summary

Problems solved by technology

For old thrombus, because of its hard texture and firm adhesion to the blood vessel wall, if the catheter is inserted into the thrombus for thrombolysis, it is very easy to damage the blood vessel, which is dangerous and difficult to operate

Images