Adjustable length catheter

A - Human Necessities – 61 – M

Patent

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Details

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

Patent

CA 2513380

A catheter provided with an adjustable length guidewire catheter lumen, located proximal of a therapeutic device or agent positioned at the distal end of the catheter. The length of the adjustable length guidewire catheter lumen is controlled by the physician, allowing the benefits of both over-the-wire and rapid exchange systems to be provided in one catheter. The adjustable length is provided with a thin-walled tube that corrugates under axial compression. The tube may optionally be pre-corrugated or may be allowed to corrugate non-uniformly under the axial compression. The catheter length may change by, for example, over 100 % of its original length between full axial compression and full axial extension.

L'invention concerne un cathéter comprenant une lumière réglable destinée au fil-guide, placé du côté proximal d'un dispositif thérapeutique ou d'un agent disposés à l'extrémité distale du cathéter. La longueur de la lumière réglable pour fil-guide est réglée par le médecin, ce cathéter offrant les avantages combinés des systèmes sur fil-guide et des systèmes à échange rapide dans un seul cathéter. Le réglage de la longueur est réalisé au moyen d'un tube à paroi fine qui se replie en accordéon sous l'effet d'une compression axiale. Le tube peut éventuellement être pré-plissé ou se replier de manière non uniforme sous l'effet de la compression axiale. Entre la position de compression axiale totale et la position d'extension axiale totale, la longueur du cathéter peut être modifiée de plus de 100 % par rapport à la longueur d'origine.

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