Conduit

Abstract

The present invention discloses a conduit, the head of which is bendable and the bending radius is variable. The conduit comprises a main body and a head positioned at the far end of the main body and connected with the main body. The head comprises a central tube having at least one bending section; at least one set of pulling ropes respectively fixed to the corresponding one of the at least one bending section; and a guide wire penetrating into the central tube, wherein the guide wire comprises a distal portion and a proximal portion which are connected, and the harness of the distal portion is less than that of the proximal portion. The guide wire can move relative to the central tube, so that when the connection position of the distal portion and the proximal portion of the guide wire is positioned at different positions of one bending section of the at least one bending section, the bending section can be bent with different radiuses through controlling the corresponding set of pulling ropes of the at least one set of pulling ropes. The conduit can be adapted to penetration of blood vessel divergence of various shapes, angles and bending lengths.

Description

technical field [0001] The invention relates to a medical device, in particular to a catheter for minimally invasive interventional operation of blood vessels. Background technique [0002] Minimally invasive surgery emerged in the 1980s, and interventional surgery is its important branch. Interventional surgery can be divided into vascular intervention and non-vascular intervention. In recent years, minimally invasive vascular surgery (MIVS) has been widely used at home and abroad. Vascular minimally invasive interventional surgery refers to that under the guidance of medical imaging X-ray images during the operation, the doctor inserts the catheter into the blood vessel and controls the movement direction of the front end of the catheter outside the body, and sends the catheter from the patient's puncture site to the target blood vessel for corresponding surgery. treat. The operation has the advantages of small wound, less bleeding, less pain for patients, fast postoper...

AI Technical Summary

Problems solved by technology

However, once the above-mentioned existing catheter is manufactured, its achievable bending parameters, especially the scope of the bending radius at a certain bending angle, are basically fixed, and the blood vessels in the human body are diverse, and the different blood vessels are different. Shapes, angles, and bend radii can vary significantly, making existing catheters of this type difficult to access in certain vessels, especially those with bend angles and / or bend radii beyond the range achievable with the catheter. Difficulty, even forced to suspend operation

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