Thrombolytic balloon catheter device

Abstract

The invention provides a rapid exchange catheter device which can be used for thrombolysis in intracoronary thrombosis and percutaneous transluminal coronary angioplasty (PTCA). The device comprises aguide wire tube, an inner tube, an outer tube and a balloon. The middle distal section of the guide wire tube, the inner tube and the outer tube are coaxially overlapped from inside to outside; the proximal section of the guide wire tube penetrates through the wall of the inner tube and the wall of the outer tube to form a guide wire outlet, and the distal end of the guide wire tube is freely opened in the inner cavity of the inner tube; the inner cavity of the inner tube is a communicated perfusion cavity, the proximal end of the inner tube is provided with a medicine injection port, and thedistal section of the inner tube is provided with a perfusion side hole and a guide wire inlet which are opened in multiple directions; the cavity gap between the outer tube and the inner tube is a balloon pressurization and decompression cavity, the proximal end is provided with a balloon pressurization and decompression hole, and the distal end is communicated with the balloon cavity. Accordingto the invention, the functions of the thrombolytic catheter and the balloon catheter are integrated into one catheter, so that two operations of thrombolysis and PTCA in coronary artery thrombosis can be quickly completed, the thrombotic load can be reduced, the thromboembolism can be prevented, the operation time can be shortened, and the X-ray exposure to doctors and patients can be reduced.

Description

technical field [0001] The present invention relates to a fast-exchange catheter device that can be used for thrombolysis in coronary artery occlusive lesions, and can perform percutaneous transluminal coronary angioplasty (PTCA) on severe stenosis segments of occlusive lesions. In particular, it has the following two advantages: 1. It reduces the passing outer diameter of the distal end of the catheter, increases its passability, and reduces the risk of thrombus falling off due to extrusion, thereby preventing thromboembolism; The contact area of ​​the thrombus can further improve the thrombolytic effect, reduce the dosage of thrombolytic drugs, and reduce the risk of bleeding; 3. It simplifies the thrombolytic operation and shortens the X-ray exposure time of doctors and patients. Background technique [0002] At present, there is no thrombolytic balloon catheter available for clinical use. Only the patent document of the State Intellectual Property Office of the People's ...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the current rapid exchange reverse thrombolytic balloon catheter, the outer diameter of the distal section is too large, the thrombolytic operation is not simple enough, and the contact area between the thrombolytic drug and the thrombus is small, the perfusion thrombolytic balloon catheter device provided by the present invention It not only reduces the outer diameter of the catheter at the distal end of the catheter, but also prevents the balloon from entering the thrombus. It can also inject thrombolytic liquid into the thrombus in the entire segment at the same time, which increases the contact area between the thrombolytic drug and the thrombus, and improves the efficiency of thrombolysis. Thrombosis effect reduces thrombolytic drugs and simplifies thrombolytic operation

Images