Visual improved arterial-venous internal fistula thrombolysis device

Abstract

A visual improved arterial-venous internal fistula thrombolysis device comprises a needle body and an injection catheter body, wherein the needle body comprises a first outer catheter, a pricking needle and a connector, the connector is arranged at the back end of the first outer catheter, and the pricking needle is arranged inside the first outer catheter in a withdrawable manner; the injection catheter body comprises a second outer catheter and a thrombolysis catheter, the second outer catheter is connected with a first outer casing pipe through the connector, and the thrombolysis catheter is arranged in the second outer catheter in a penetrating manner. The thrombolysis device comprises two parts, namely, the needle body and the injection catheter body, and the needle body part plays a puncture guiding role; the injection catheter body and the needle body adopt the structure capable of being mounted, dismounted and changed, and the model and the size of the thrombolysis catheter can be changed conveniently as required so as to meet requirements under different conditions. Besides, in the medicine injection process, the length of the thrombolysis catheter pushed into a blood vessel is adjustable, so that the position of the catheter and the application part can be adjusted conveniently as required.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a visually improved thrombolytic device for arteriovenous fistula. Background technique [0002] Arteriovenous fistula is the "lifeline" of uremic hemodialysis patients, and fistula thrombosis is the main reason for its loss of function. Causes of thrombosis include: poor vascular conditions, phlebitis, arteriosclerosis, diabetic vascular disease, surgical technique factors, hypercoagulable state, occurrence of hypotension, long-term repeated puncture, improper compression and hemostasis, etc. [0003] In the past, the treatment methods for internal fistula thrombosis were mostly surgical incision and thrombectomy or reconstruction of internal fistula, which not only caused great trauma, but also had many complications. The first choice is to use urokinase to slowly pump in the treatment method. Catheter intervention drug thrombolysis is dangerous. It has the advantages ...

AI Technical Summary

Problems solved by technology

Clinically, due to the differences in internal fistula thrombus, it is often difficult to dissolve the longer and more difficult thrombus using traditional puncture needles and techniques, and the fixed position of the puncture point is difficult for the constantly changing thrombus dissolution status. Timely and effective adjustment of the position of the puncture catheter leads to poor thrombolysis effect. At this time, the patient not only has to bear the pain and risk of the second puncture catheter, but also increases the work intensity of the medical staff.

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