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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.

Pending Publication Date: 2021-02-12
SHANGHAI MICROPORT SHIELD MEDTECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a medical catheter to solve the technical problems that the tensile strength and flexibility of the medical catheter cannot be balanced, the kink resistance is poor, and the radial support force is poor, thereby affecting the intervention of subsequent treatment instruments.

Method used

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Embodiment Construction

[0029] A medical catheter of the present invention will be further described in detail below. The invention will now be described in more detail with reference to the accompanying drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention described herein and still achieve the advantageous effects of the invention. Therefore, the following description should be understood as the broad knowledge of those skilled in the art, but not as a limitation of the present invention.

[0030] In the interest of clarity, not all features of an actual implementation are described. In the following description, well-known functions and constructions are not described in detail since they would obscure the invention with unnecessary detail. It should be appreciated that in the development of any actual embodiment, numerous implementation details must be worked out to achieve the developer's specific goals, s...

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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.

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

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Application Information

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IPC IPC(8): A61M25/00
CPCA61M25/0054A61M25/0053A61M2025/0046A61M2025/0059
Inventor 孙剑峰柳逸凡倪尊张张子衡陈宇芬
Owner SHANGHAI MICROPORT SHIELD MEDTECH CO LTD
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