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Manufacturing process of anti-injury reinforced anesthesia catheter

An anesthesia catheter and manufacturing process technology, applied in the field of medical devices, can solve problems such as contact, achieve the effect of firm combination, strong anti-bending ability, and increase the success rate of catheterization

Pending Publication Date: 2022-03-08
HENAN TUOREN MEDICAL DEVICE GRP
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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 an anti-injury enhanced anesthesia catheter manufacturing process: three-layer composite extrusion, by adding a polymer plastic inner layer on the basis of the existing product double-layer structure, avoiding the exposed steel wire spring, which can solve the current problem. There is a problem that the steel wire spring is in contact with the liquid medicine during clinical use; and the steel wire spring is firmly covered in the middle part of the product by the inner and outer layers of polymer plastic, which is more beneficial to enhance the product's tensile and anti-folding properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Baking material: drying polymer plastics at a drying temperature of 100°C and a drying time of 4 hours;

[0032] (2) Inner core production: choose high temperature resistant elastic material, extrude it into a solid tube with a diameter of 0.50mm, as the inner core;

[0033] (3) Inner layer coating extrusion: For the inner layer coating material obtained in steps (1) and (2), select a T-shaped machine head, and feed the inner core from the rear of the machine head along the discharge direction of the machine head. The side of the machine head is fed into the molten material through the rotation of the extruder host screw, the inner core and the material are combined in the die, and then the pipe is drawn through vacuum sizing, cooling, transmission, and forming into a disk to obtain the inner layer coating extruded Out of the tube;

[0034] (4) Winding spring: Select a steel wire with a wire diameter of 0.05-0.10mm, and form the spring through a spring winding mach...

Embodiment 2

[0040] (1) Drying material: drying the material, the drying temperature is 100°C, and the drying time is 4 hours;

[0041] (2) Inner core production: choose high temperature resistant elastic material, extrude it into a solid tube with a diameter of 0.50mm, as the inner core;

[0042](3) Inner layer coating extrusion: For the inner layer coating material obtained in steps (1) and (2), select a T-shaped machine head, and feed the inner core from the rear of the machine head along the discharge direction of the machine head. The side of the machine head is fed into the molten material through the rotation of the extruder host screw, the inner core and the material are combined in the die, and then the pipe is drawn through vacuum sizing, cooling, transmission, and forming into a disk to obtain the inner layer coating extruded Out of the tube;

[0043] (4) Winding spring: Select a steel wire with a wire diameter of 0.05-0.10mm, and form the spring through a spring winding machin...

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Abstract

The invention belongs to the technical field of medical apparatus and instruments, and particularly discloses a manufacturing process of an anti-injury reinforced anesthesia catheter, which specifically comprises the following steps: (1) material drying: drying high-molecular plastic; (2) manufacturing an inner core: extruding the inner core into a solid tube with the diameter of 0.47-0.52 mm; (3) inner layer coating extrusion: obtaining an inner layer coating extrusion pipe; (4) winding the spring to obtain a steel wire spring with two screw pitches of a sparse section and a dense section; (5) penetrating a spring: penetrating an inner-layer coated extrusion pipe with the outer diameter smaller than that of an inner cavity of the steel wire spring into the inner cavity of the steel wire spring; (6) coating and extruding an outer layer; (7) testing associativity; (8) carrying out thermal rheological treatment in a rheological machine; (9) stripping the heat shrink tube: selecting a surgical blade to completely strip the heat shrink tube; (10) pulling out the inner core: pulling out the inner core from the middle of the tube body; and (11) trimming and shaping. The manufacturing method is simple, the three-layer structure is reasonable in design, and the anti-folding capacity is high.

Description

technical field [0001] The patent of the invention belongs to the technical field of medical devices, and specifically discloses a manufacturing process of an anti-injury reinforced anesthesia catheter. Background technique [0002] In recent years, epidural anesthesia nerve block has been widely used clinically, and anesthesia catheter plays a pivotal role in this anesthesia method. There are two types of anesthesia catheters on the market: ordinary anesthesia catheter and reinforced anesthesia catheter. The ordinary anesthesia catheter is extruded from polymer plastics, and the reinforced anesthesia catheter is formed by co-extrusion of steel wire springs and molten polymer plastics. . Compared with the ordinary anesthesia catheter, the enhanced anesthesia catheter has the advantages of simple operation, easy catheter placement, anti-bending, small damage, easy management during operation, and convenient epidural analgesia after operation. It has been obtained in epidural...

Claims

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Application Information

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IPC IPC(8): A61M25/00B29D23/00
CPCA61M25/0009A61M25/0012A61M25/005B29D23/001A61M2025/0063
Inventor 程玲玲魏永飞牛富超王鑫春王泼莫盼盼侯景杰张启超
Owner HENAN TUOREN MEDICAL DEVICE GRP
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