Apparatus and methods for treating obstructions within body...

A - Human Necessities – 61 – M

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Details

A61M 25/10 (2006.01) A61B 17/221 (2006.01) A61M 29/02 (2006.01)

Patent

CA 2729750

An apparatus is provided that is operable in different modes to perform various functions for treating a body lumen. The apparatus includes a shaft including a proximal end, a distal end, a lumen extending therebetween, and a balloon on the distal end having an interior communicating with the lumen. The apparatus includes a valve on the distal end that selectively opens or closes an outlet communicating with the lumen. With the valve open, fluid introduced into the lumen exits the outlet into a body lumen. With the valve closed, fluid introduced into the lumen expands the balloon. The apparatus also includes an actuator for axially compressing the balloon, and a helical member extends between ends of the balloon interior that expands the balloon from a contracted condition to an expanded helical shape when the actuator is activated.

Cette invention concerne un appareil fonctionnant en différents modes pour obtenir différentes fonctions en vue de traiter une lumière organique. Lappareil comprend une tige comportant une extrémité proximale, une extrémité distale, une lumière placée entre les deux et un ballonnet à lextrémité distale dont lintérieur communique avec la lumière. Lappareil comprend une vanne à lextrémité distale qui ouvre ou ferme de manière sélective un port de sortie communiquant avec la lumière. Lorsque la vanne est ouverte, le liquide introduit dans la lumière sort par le port de sortie et pénètre dans une lumière organique. Lorsque la vanne est fermée, le liquide introduit dans la lumière dilate le ballonnet. Lappareil comprend aussi un actionneur qui permet de comprimer de manière axiale le ballonnet, et un élément hélicoïdal qui sétend entre les extrémités de lintérieur du ballonnet qui dilate le ballonnet en le faisant passer dun état contracté à une forme hélicoïdale dilatée lorsque lactionneur est activé.

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