System for guiding devices in body lumens

A - Human Necessities – 61 – M

Patent

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A61M 25/01 (2006.01)

Patent

CA 2321516

Many procedures require a device to be inserted into a body lumen with the assistance of a guidewire. Devices are often slidably attached to the guidewire and pushed along it, by a catheter, into a body lumen. Often the devices are unable to negotiate small radius turns because the pushing catheter is stiffer than the guidewire and their passage distorts the curves of the guidewire. This invention provides means of reducing the distortion of the guidewire or delivery means, thereby reducing fouling and other means for facilitating the delivery of devices along the guidewire.

Dans de nombreuses procédures il est nécessaire d'introduire un dispositif dans une lumière corporelle à l'aide d'un fil de guidage. Les dispositifs sont souvent attachés au fil de guidage de manière à coulisser et sont poussés sur sa longueur, par un cathéter, dans une lumière corporelle. Il arrive souvent que les dispositifs sont incapables de négocier des virages à faible rayon étant donné que le cathéter pousseur est plus rigide que le fil de guidage et que leur passage déforme les courbes du fil de guidage. Cette invention concerne un moyen pour réduire la déformation du fil de guidage ou du dispositif d'apport pour réduire par conséquent l'obstruction, et un autre moyen facilitant l'acheminement des dispositifs le long du fil de guidage.

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