Preparation method of steel-wire anesthetic catheter

A technique for anesthesia catheters and catheters, which can be used in catheters, drug devices, other medical devices, etc., to solve the problems of untestable chemical reagent residues, reduced catheter flow rate, and blockage of the catheter tip, and to reduce the risk of puncturing the dura mater. Risks, reduced discounts, improved lubricity

Pending Publication Date: 2021-12-17
HENAN TUOREN MEDICAL DEVICE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These four methods have their own advantages and disadvantages. The disadvantage of arc-shaped fusion head is that the head end of the catheter may be blocked during the head-end fusion head process, and the flow rate of the catheter will be reduced. The disadvantage of chemical treatment is that the residue of chemical reagents cannot be tested, and it will be harmful during clinical use. The patient brings new substances; rotary cutting process, the wall thickness of the tube becomes thinner, and it may be discounted when it encounters obstacles; butt welding is the risk of falling off during the extubation process

Method used

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Examples

Experimental program
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Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention are clearly and completely described below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] S1: Put the TPU catheter into the baking oven and bake;

[0030] Specifically, take TPU pellets from the transfer warehouse, put the pellets into an oven, heat up to 85°C±5°C, and then bake them continuously for 4 hours before using them.

[0031] S2: Extrusion of TPU catheter body;

[0032] Specifically, refer to the extrusion process card and operating procedures for temperature-raising extrusion. When adjusting the machine, determine whether the pipe body has crystal points and material points, and whether the pipe body is ...

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Abstract

The invention relates to the technical field of medical appliances and particularly discloses a preparation method of a steel-wire anesthetic catheter. The method comprises the following steps: S1: manufacturing a TPU catheter; S2, combining the catheter and a supporting spring are combined, and not arranging the supporting spring at the tip end of the catheter; and S3, performing hydrophilic coating treatment on the front end of the catheter. According to the preparation method, through 3-10mm blank leaving treatment and 3-10mm hydrophilic coating treatment at the head end, the flexibility and lubricity of the head end of the catheter are improved, and clinical risks such as epidural hemorrhage caused by puncture of a spinal dura mater or damage to blood vessels in clinical operations are avoided.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a method for preparing a steel wire anesthesia catheter. Background technique [0002] In recent years, flexible reinforced epidural anesthesia catheters have appeared on the market. This kind of anesthesia catheter is a kind of preparation technology for the tip molding of steel wire anesthesia catheters. Through major breakthroughs in manufacturing technology, it solves the problem of common epidural anesthesia currently used in the market. External anesthesia catheters often occur in clinical practice, the catheter is easy to puncture the dura mater, stray into the subarachnoid space, discount and other phenomena, which lead to complications such as total spinal anesthesia, postoperative headache, epidural hematoma and other complications in surgical patients. However, because the manufacturing technology of the flexible reinforced anesthesia catheter is extremely comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00
CPCA61M25/0009A61M25/001A61M25/0015A61M25/0043A61M25/0068A61M25/0045A61M2025/0046A61M2207/00
Inventor 钟颖王鑫春王珂夏天王月梅陈春艳
Owner HENAN TUOREN MEDICAL DEVICE GRP
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