Apparatus and method for proximal to distal stent deployment

摘要

Methods and devices for delivering a stent in a proximal to distal fashion are disclosed. The delivery device includes a sheath catheter, an outer catheter and an inner catheter over a guide wire. A crimped stent is positioned over the distal end of the outer catheter and is held in place by a lubricous elastic membrane attached to a retractable ring. The retractable ring is connected to pull wires and slidably deployed between the inner and outer catheters. The proximal end of the stent is aligned at the treatment location, and the lubricous elastic membrane is pulled back into the space between inner catheter and outer catheter, releasing and deploying the stent from its proximal to its distal end.

主权项

1. A stent deployment system comprising:
an inner catheter slideably movable over a guide wire; an outer catheter slideably moveable over the inner catheter such that an interspace is formed between the inner catheter and the outer catheter; an expandable stent crimped on the outer catheter; a lubricous elastic membrane removably covering the stent, the lubricous elastic membrane having a proximal end and a distal end; a ring slidably deployed over the inner catheter and retractable into the interspace, the ring attached to the distal end of the lubricous elastic membrane; a plurality of pull wires connected to the ring, for retracting the ring and elastic membrane into the interspace.