Medical catheter

A technology for medical catheters and threads, applied in catheters, coatings, etc., can solve problems such as poor kink resistance, affecting the intervention of therapeutic devices, and poor radial support force.
CN112354065APending Publication Date: 2021-02-12SHANGHAI MICROPORT SHIELD MEDTECH CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI MICROPORT SHIELD MEDTECH CO LTD
Publication Date
2021-02-12

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Abstract

The invention provides a medical catheter, which comprises an inner layer, a spiral layer and a woven layer, wherein the spiral layer and the woven layer are arranged outside the inner layer, the woven layer is of a net-shaped structure formed by weaving first silk threads in a crossed mode, the spiral layer is of a spiral structure formed by winding second silk threads in the axial direction, themedical catheter comprises at least two sections distributed in the axial direction, and the included angle formed by the first silk threads and the second silk threads in at least one section is different from the included angles formed by the first silk threads and the second silk threads in other sections. According to the invention, the included angle formed by the first silk thread and the second silk thread in at least one section is different from the included angle formed by the first silk thread and the second silk thread in other sections, so that the medical catheter has good flexibility, tensile strength and radial supporting force in the far-end section of the medical catheter, the stress mutation of the far end and the near end can be prevented in the middle section, the near end section has high strength and good pushing performance, and therefore release and recovery of the endovascular interventional instrument are guaranteed.
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Description

[0001] This divisional application is based on the divisional application of the Chinese patent application with the application number 201911296393.4, the application date is December 16, 2019, and the invention title is "A Medical Catheter". technical field

[0002] The present invention relates to a medical catheter for the delivery of an endovascular interventional device during surgery, and more particularly to a medical catheter for the release and retrieval of an endovascular interventional device during cardiac surgery and / or aortic surgery . Background technique

[0003] In cardiac surgery, when intracardiac surgery is performed, medical catheters are often used to deliver specific surgical instruments, such as endovascular interventional instruments. For example, when performing ultrasound-guided atrial septal defect closure, it is necessary to use a medical catheter to transport the fan into the heart.

[0004] Traditional medical catheters use braids as reinforc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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