METAL WIRE FOR MEDICAL INSTRUMENT

Title:

METAL WIRE FOR MEDICAL INSTRUMENT

Document Type and Number:

WIPO Patent Application WO/2018/078947

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing a medical instrument, with which there is little induction of allergic reactions in patients, which has excellent strength and corrosion resistance, and with which patients do not easily feel pain during insertion. The medical instrument is formed from a wire 2 (or pipe). The material of said wire 2 is titanium or a titanium alloy. The arithmetic mean roughness Ra of said wire 2 measured along the radial direction is 0.20 µm or less. Preferably, the wire 2 has a main section 8 and an oxide coating 10. The main section 8 is covered entirely with the oxide coating 10. The thickness T of the oxide coating 10 is 0.01 µm to 0.05 µm. The diameter D of the wire 2 is 0.05 mm to 0.50 mm.

Inventors:

NAKAYOSHI ISAO (JP)

Application Number:

PCT/JP2017/023214

Publication Date:

May 03, 2018

Filing Date:

June 23, 2017

Export Citation:

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Assignee:

TOKUSEN KOGYO KK (JP)

International Classes:

C22F1/18; A61L31/02; A61L31/12; B21C1/00; A61B17/06; A61H39/08; A61M5/158; A61M5/32; C22F1/00

Foreign References:

JPH04279212A	1992-10-05
JPH0259109A	1990-02-28
JP2004232077A	2004-08-19
JP2003326389A	2003-11-18
JP2006124810A	2006-05-18
JP2002282673A	2002-10-02

Other References:

KAZUYOSHI TSUCHIYA ET AL.: "Development of Blood Extraction System for Bio-MEM", TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS (SERIES C), vol. 71, no. 702, 25 February 2005 (2005-02-25), pages 603 - 609
EIJI NAKAMACHI ET AL.: "Sputter Generating and Characterization of a Titanium Alloy Microneedle for Applying to Bio-MEM", TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS (SERIES A), vol. 72, no. 716, 25 April 2006 (2006-04-25), pages 471 - 477