Medical catheter with composite property

Abstract

The invention discloses a medical catheter with composite property, which comprises a catheter body, the catheter body comprises a polymer outer layer, a metal reinforcing layer and a polymer inner layer, the metal reinforcing layer comprises at least one section of metal composite woven mesh, the metal composite woven mesh is formed by weaving round wires and flat wires together, and the round wires and the flat wires are arranged in the polymer outer layer. The metal composite woven mesh provided by the invention adopts a structural design of mixed weaving of special-shaped metal wires, namely round wires and flat wires, and comprises single-strand weaving and double-strand weaving, so that a metal reinforcing layer section and a conduit section where the metal composite woven mesh is located have composite properties and comprehensive properties which cannot be achieved by a full-round-wire or full-flat-wire weaving structure; a catheter product which cannot be achieved by conventional adjustment and has unique performance is obtained, so that specific use requirements are met, special application scenes are adapted, the application range of the interventional catheter is widened, and the interventional catheter has high medical value.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a composite medical catheter. Background technique [0002] Medical catheter is a general term for lumen products that connect the inside and outside of the human body, and can be made of different materials such as metal, plastic, and rubber. It is widely used as a pathway in interventional surgery, drainage, drug administration, blood transmission, and auxiliary introduction of other medical devices. Conventional interventional catheters are made of softer plastic. In the operation of interventional therapy, if some blood vessels are relatively curved and the lumen is narrow, it is very difficult to push the conventional catheter into the distal blood vessel. The proximal and middle sections of the catheter are often bent or even broken, or the distal end of the catheter is knotted. These are all plastic The axial and radial mechanical properties of the catheter itself are not ...

AI Technical Summary

Problems solved by technology

[0004] Similarly, for this type of catheter, good flexibility usually has poor axial tensile resistance and poor durability. Once the distal end of the catheter is blocked in a tortuous blood vessel, the catheter with poor stretch resistance is easy to stretch and deform when it is withdrawn , leading to operation failure. On the other hand, when a patient has multiple lesions in a blood vessel that need to be treated, the distal end of the catheter is easily deformed due to poor durability. Replacing a new catheter will greatly prolong

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