| 摘要 |
A vascular occlusion device deployment system for placing an occlusion device (25) at a preselected site within the vasculature of a patient. The deployment system employs light energy transferred through an optical fiber (16) to sever a securing filament (36) attaching the occlusion device (25) to the deployment system (14), thereby releasing the occlusion device (25) at the preselected location. In one embodiment the system comprises: a deployment unit (14) comprising a flexible pusher (16) adapted for transmitting light energy therethrough, the pusher (16) having a proximal end portion and a distal end portion; a vascular occlusion device (25); a securing filament (36) for connecting the vascular occlusion device (25) to the deployment unit (14) at a location distal of the distal end portion of the pusher, the securing filament (36) capable of being severed by heat; and an element (26) at the distal end portion of the pusher, the element being adjacent to said securing filament (36) and increasing in temperature upon exposure to light energy transferred through said pusher, thereby releasing the vascular occlusion device (25) from the securing filament (36). |
