Peripheral vessel interventional therapy microcatheter

Abstract

The invention relates to the technical field of medical instruments, and discloses a peripheral vessel interventional therapy microcatheter which comprises a catheter body; the catheter body comprises a tail catheter, a middle catheter and a front catheter; the tail catheter, the middle catheter and the front catheter are communicated, and each of the tail catheter, the middle catheter and the front catheter comprises a methyl ethyl ether anhydrous maleic acid copolymer hydrophilic coating layer; the outer layer and the middle layer of the catheter body are made of polyamide elastomers, the inner layer is made of polytetrafluoroethylene, the woven mesh of the catheter body is made of stainless steel, a catheter seat is made of polycarbonate, the tail catheter is provided with a radiopaque marker made of platinum-iridium alloy, and the tail catheter is coated with a methyl ethyl ether anhydrous maleic acid copolymer hydrophilic coating layer; the catheter body is designed by five sections of materials with different hardness; the catheter seat is a transparent conical joint, and the catheter body is woven by stainless steel; and the inner layer of the catheter body is the polytetrafluoroethylene coating layer, so that the microcatheter has good controllability, pushing performance, twisting performance and tracking performance, and is more suitable for peripheral vessel interventional therapy.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a microcatheter for peripheral blood vessel intervention therapy. Background technique [0002] Peripheral blood vessels are mainly blood vessels other than cardiovascular and cerebrovascular, including trunk blood vessels, visceral blood vessels and extremity blood vessels, including arteries, veins and capillaries. Microcatheters are often used in the treatment of peripheral blood vessels. Microcatheters are used to transport contrast agents, pharmaceutical preparations, embolization materials, etc. in radiological interventional diagnosis and treatment operations. After the microcatheter reaches the designated position through the guide wire, the microcatheter can controllably and selectively infuse diagnostic, embolization or therapeutic agents into the blood vessel. For patients who need peripheral vascular interventional therapy, the general clinical manifestations...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a microcatheter for peripheral vascular interventional therapy, which has the advantages of being easy to use and can be stretched, and solves the problem that the existing microcatheter is not easy to use. When treating peripheral catheters, coronary or cardiac catheters are generally used. Compared with the microcatheter used for the periphery, the inner microcatheter has a smaller lumen, poor visibility under fluoroscopy, the catheter wall is easily discounted, and the hydrophilic coating is easily peeled off from the microcatheter, which affects the operation of medical staff and increases the difficulty of use. It reduces the efficiency of the operation and cannot be stretched. Generally, the length of the catheter is fixed. During the treatment process, catheters of different lengths need to be used according to the location of the treatment. Before the treatment, multiple catheters of different lengths need to be prepared, which increases labor. Amount, improve the cost of treatment, reduce the problem of work efficiency

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