Microcatheter and microcatheter device

Abstract

The invention relates to a micro-catheter and a micro-catheter device, the micro-catheter comprises a catheter body, the catheter body is provided with a control end and a guide end which are oppositely arranged, the catheter body comprises a plurality of catheter sections which are sequentially arranged in the direction from the control end to the guide end and are gradually reduced in hardness, and a guide hole is formed in the side wall of the guide end; a containing cavity is formed in the catheter body and communicated with the outside through the guide hole, and the containing cavity is further communicated with the outside through the control end. By means of the arrangement, pushing performance and flexibility of the micro-catheter can be guaranteed, meanwhile, movement of the micro-catheter in a blood vessel pipeline can be controlled more conveniently, and the guide wire can enter a tortuous blood vessel conveniently to reach the lesion position. Moreover, by arranging the multiple pipe sections with the hardness gradually reduced, the stability of connection between the multiple pipe sections can be guaranteed, and movement can be conveniently conducted to the guide end from the control end; and adaptive deformation can be conveniently conducted to the control end by the guide end.

Description

technical field [0001] The invention relates to the technical field of vascular intervention, in particular to a microcatheter and a microcatheter device. Background technique [0002] Vascular interventional technique refers to an operation technique that uses puncture needles, guide wires, catheters and other instruments to diagnose and treat lesions through vascular access under the guidance of medical imaging equipment. Vascular interventional techniques are generally used in the surgical treatment of malignant trophoblastic tumors. Vascular intervention technology has the advantages of less trauma, easy operation, and accurate intervention site, so that some patients who cannot tolerate major surgery and drug resistance have been treated, and the number of malignant trophoblastic tumors is also increasing. [0003] However, because the guide wire is relatively soft, it is often difficult to reach the lesion, which increases the difficulty of the operation. In the prio...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a microcatheter and a microcatheter device for the problem of how to facilitate the movement of the microcatheter in the blood vessel while ensuring the pushability and flexibility of the microcatheter

Images