Patent ID: 7976574
Filing Date: 2011-07-12
Classification: A61F

Abstract:
1. A system for delivering a medical device within vasculature, comprising: a retractable sheath; a medical device retained by the retractable sheath; and a handle assembly including an actuating mechanism coupled to the sheath, the actuating mechanism including a flexible elongate member having one end coupled to the retractable sheath and another end coupled to a wind-up member, the wind-up member being rotatable to allow a portion of the flexible elongate member to wind thereon to effect longitudinal movement of the sheath, and a speed-increasing member associated with the actuating mechanism which increases the speed by which the sheath moves longitudinally as the flexible elongate member is wound about the wind-up member, wherein the wind-up member is a drum and the speed-increasing member is a first cam directly and pivotally connected to the drum and a second cam directly linked to the first cam.