Improved guidewire

Details Improved guidewire Improved guidewire

B - Operations, Transporting

21

B

B21B 1/46 (2006.01) B21F 99/00 (2009.01) B21B 13/22 (2006.01) B22D 11/126 (2006.01) B22D 11/128 (2006.01) B23P 17/00 (2006.01) B23P 25/00 (2006.01) B24B 1/00 (2006.01) B24B 5/00 (2006.01) B24B 5/18 (2006.01) B24B 7/00 (2006.01) B24B 7/19 (2006.01) B24B 7/30 (2006.01) B24B 9/00 (2006.01)

Patent

CA 2346822

In the manufacture of a guidewire for medical applications, a mandrel (14) is formed using a wound wire having a first diameter (D1). The wound wire is straightened and cut to appropriate size. Subsequently, the wire is ground down, using center-less grinding, to one or more sections all having diameters (D2, D3) which are less than the first diameter (D1). Optionally, the mandrel (14) thus formed is coated with a hydrophilic coating, and a radiopaque marker affixed thereto.

Selon la présente invention, la fabrication d'un fil-guide destiné à des utilisations médicales consiste à former un mandrin (14) en utilisant un fil enroulé ayant un premier diamètre (D1). Ce fil enroulé est redressé et coupé à la longueur appropriée, puis il est poli par rectification sans centres afin de présenter une ou plusieurs sections, toutes de diamètres (D2) ou (D3), inférieurs à (D1). Le mandrin (14) ainsi formé peut également être recouvert d'un revêtement hydrophile, et il est possible d'y fixer un marqueur opaque aux rayons X.

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