Detachable microcoil delivery catheter

A - Human Necessities – 61 – B

Patent

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Details

A61B 17/03 (2006.01) A61B 17/12 (2006.01) A61F 2/01 (2006.01) A61M 29/00 (2006.01)

Patent

CA 2170359

This invention is a surgical instrument, and specifically is a device for delivering embolic coils (102) to a selected site within the vasculature of the human body. The instrument uses, and may include, a catheter (110) used to place the embolic coil. In particular, the device is comprised of a pusher wire (108) having a distal tip (106) which is configured to engage the proximal end of the embolic coil (102). The device may also include a cylindrical pusher (112) which coaxially surrounds at least a portion of the pusher wire and cooperates in the disengagement of the coil from the pusher wire and the ejection of the vasoocclusive coil into the selected vascular site. The pusher wire's engagement tip (106) may be of any selected and convenient shape and may be grooved, if so desired, to enhance the engagement joint strength.

Cette invention concerne un instrument chirurgical et plus particulièrement un dispositif pour placer un serpentin (102) vaso-occlusif à un emplacement sélectionné dans le système vasculaire humain. L'instrument utilise et peut comporter un cathéter (110) destiné à positionner le serpentin vaso-occlusif. En particulier, le dispositif est constitué d'un fil de poussée (108) ayant une extrémité distale (106) qui est formée pour s'engager avec l'extrémité proximale du serpentin vaso-occlusif (102). Le dispositif peut également comporter un élément de poussée cylindrique (112) qui entoure coaxialement au moins une partie du fil de poussée et qui aide au désengagement du serpentin par rapport au fil de poussée et à la libération du serpentin vaso-occlusif au site vasculaire choisi. L'extrémité d'engagement (106) du fil de poussée peut avoir une forme quelconque appropriée et elle peut comporter une rainure, lorsque cela est souhaité, pour mieux tenir le serpentin.

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