Super elastic alloy guidewire

Details Super elastic alloy guidewire Super elastic alloy guidewire

A - Human Necessities

61

M

A61M 25/01 (2006.01) A61M 25/00 (2006.01)

Patent

CA 2126314

This invention is a surgical device. It is a guidewire for use in a catheter and is used for accessing a targeted site in a lumen system of a patient's body. The guidewire may be of a high elasticity metal alloy, preferably a Ni-Ti alloy, having specified physical parameters, and is especially useful for accessing peripheral or soft tissue targets. A special variation of the inventive guidewire includes the concept of coating the wire with a one or more lubricious polymers to enhance its suitability for use within catheters and with the interior of vascular lumen. The "necked" guidewire tip also forms a specific variant of the invention.

Instrument chirurgical, précisément un fil-guide, utilisé dans un cathéter. Il sert à accéder à un endroit précis dans un système lumière du corps d'un patient. Le fil-guide peut être d'un alliage métallique haute élasticité, préférablement de Ni-Ti, ayant des paramètres physiques précis. Il s'avère particulièrement utile pour accéder à des zones périphériques ou des tissus mous cibles. Une variation particulière de ce nouveau type de fil-guide comprend le concept de revêtir le fil d'une ou de plusieurs couches de polymère lubrifiant, afin d'améliorer son utilisation dans les cathéters et l'intérieur des lumières vasculaires. La pointe rétreinte du fil-guide constitue une autre particularité de cette invention.

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