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Medical catheter

A technology of medical catheters and wires, which is applied in the direction of catheters and coatings, can solve the problems of medical catheters that cannot balance the tensile strength and flexibility, affect the intervention of therapeutic equipment, and poor radial support force, so as to achieve high strength and prevent stress The effect of mutation and good pushability

Pending Publication Date: 2021-06-18
SHANGHAI MICROPORT SHIELD MEDTECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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

[0028] 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.

[0029] 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. The medical catheter comprises an inner layer and a spiral layer and a woven layer which are arranged outside the inner layer, the woven layer is of a net structure formed by crosswise weaving first silk threads, and the spiral layer is of a spiral structure formed by winding second silk threads in the axial direction. The medical catheter comprises at least two sections distributed in the axial direction. The included angle formed by the first silk threads and the second silk threads in at least one section is different from the included angle formed by the first silk threads and the second silk threads in other sections. According to the medical catheter, due to the fact that the included angle formed by the first silk threads and the second silk threads in at least one section is different from the included angle formed by the first silk threads and the second silk threads in other sections, the medical catheter has good flexibility, tensile strength and radial supporting force in the far-end section of the medical catheter. Stress sudden change of the far end and the near end can be prevented in the middle section of the medical catheter, high strength and good pushing performance are achieved in the near end section of the medical catheter, and therefore release and recovery of an endovascular intervention instrument are guaranteed.

Description

technical field [0001] 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 [0002] 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. [0003] Traditional medical catheters use braids as reinforcing layers. Braids adjust the braiding angle by adjusting the braiding speed and wire rotation speed to prepare the reinforcing layer. However, the tensile strength and flexibility of the medical catheters obtained in this way cannot be balanced,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00
CPCA61M25/0053A61M25/0054A61M2025/0046A61M2025/0059
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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