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Medical implement

A technology of medical equipment and fluororesin, which is applied in the field of medical equipment and can solve problems such as difficult visual confirmation in the operating room

Active Publication Date: 2019-11-12
TERUMO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] On the other hand, since medical instruments inserted into living body lumens and tissues have small diameters, it may be difficult to immediately visually confirm them in the operating room.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] (Preparation of coating solution for forming the first layer)

[0109] Quinacridone-based organic pigment (C.I. Pigment Violet 19, average particle diameter 430nm) 32.0g (36.8% by weight relative to solid content), titanium oxide (C.I. Pigment White 6, rutile type, average particle diameter 250nm) 8.0 g (25% by weight relative to the organic pigment, 9.2% by weight relative to the solid content), 132.0 g of methyl isobutyl ketone as a solvent, polytetrafluoroethylene (PTFE, average particle diameter 0.20 μm , melting point 327°C) 5.4g, tetrafluoroethylene-hexafluoropropylene copolymer (FEP, average particle diameter 0.20μm, melting point 270°C) 16.1g, polyphenylene sulfide resin 21.5g as binder resin, dispersant 3.2 g of DISPERBYK 2055 (manufactured by BYK-Chemie) (8% by weight relative to organic pigments and titanium oxide, 3.7% by weight relative to solid content), GARAMITE 7305 (BYK-Chemie (manufactured by the company) 0.8 g (0.9% by weight relative to the solid co...

Embodiment 2

[0116] In the preparation of the coating liquid for forming the first layer, except that the blending amount of the quinacridone-based organic pigment was changed to 20.0 g (23.0% by weight relative to the solid content), and the blending amount of titanium oxide was changed Except being 20.0 g (100 weight% with respect to an organic pigment, 23.0 weight% with respect to a solid content), it carried out similarly to Example 1, and obtained the guide wire.

Embodiment 3

[0118] In the preparation of the coating liquid for forming the first layer, except that the blending amount of the quinacridone-based organic pigment was changed to 16.0 g (18.4% by weight relative to the solid content), and the blending amount of titanium oxide was changed Except that it was 24.0 g (150 weight% with respect to an organic pigment, and 27.6 weight% with respect to a solid content), it carried out similarly to Example 1, and obtained the guide wire.

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Abstract

The present invention provides a medical implement which has high visibility on non-woven fabric having a colour such as green or blue, exhibits excellent identifiability from other medical implementshaving colours such as green or blue, and exhibits high coating adhesion and strength. A medical implement according to the present invention is provided with a long body, and a resin layer which covers at least a base end part of the long body. The resin layer is provided with: a first layer which includes a first fluororesin, an organic pigment, and a titanium oxide; and a second layer which isformed on the first layer, and which includes a second fluororesin.

Description

technical field [0001] The present invention relates to medical appliances. Background technique [0002] A guide wire is a medical tool for guiding a catheter used in percutaneous coronary angioplasty (Percutaneous Transluminal Coronary Angioplasty: PTCA) for treating a stenosis in a coronary artery of the heart, a cardiac angiographic examination, etc. . In percutaneous coronary angioplasty, a guide wire is inserted together with the balloon catheter into the vicinity of the stenotic part of the coronary artery as a target site while protruding from the distal end of the balloon catheter. At the stenosis, only the thin guidewire first passes through and dilates the stenosis while guiding the balloon catheter. [0003] For guide wires, a resin layer such as fluororesin is coated around a core material such as an alloy in order to improve slidability, so as to facilitate movement in blood vessels or passage from a lesion, etc., and reduce resistance to the inner wall of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/09A61L29/08A61L29/10A61L31/10A61M25/00
CPCA61M25/00A61M25/09A61L2420/04A61L2420/08A61L2420/06A61L2300/442A61L29/085A61L29/106A61L29/14A61L31/088A61L31/10A61L31/14C08L27/18C08L27/12A61L31/082A61L31/16A61L2420/02
Inventor 大岩智哉
Owner TERUMO KK