Everting deployment system and handle

摘要

A stent deployment system, handle, and method of loading of a medical device are provided. The system includes an outer catheter having an inner liner extending past the end of the outer catheter and an inner catheter disposed within the outer catheter. The inner liner is inverted and attached to the inner catheter. Relative movement between the outer and the inner catheters can urge the inner liner to peel away from the medical device. A handle is disposed at the proximal end of the outer catheter, and may include a splitter configured to slice the wall of the tubular member. The handle may also include a rotatable mechanism that can be attached to the tubular member. Rotation of the rotatable mechanism retracts a portion of the tubular member into the handle and winds the sliced portion about the rotatable mechanism.

主权项

1. A stent deployment system for delivering a tubular medical device, the system comprising: an outer catheter having a tubular wall defining a lumen disposed about a longitudinal axis between a proximal end and a distal end, the tubular wall of the outer catheter comprising an outer layer, an inner liner, a structural layer bonded therebetween, wherein a portion of the inner liner extends past the outer layer and the structural layer of the outer catheter; an inner catheter disposed within the lumen of the outer catheter, the inner catheter having a proximal end and a distal end and defining a lumen, the inner catheter having a first portion with a first diameter and a second portion distal thereto with a second diameter less than the first diameter, wherein the extended portion of the inner liner is inverted to define radial outer and inner portions, the inner portion of the inverted extended portion of the inner liner of the outer catheter being attached to the inner catheter, the inner liner being bonded to the outer layer of the outer catheter from the attachment of the inner liner and the inner catheter to a distal end of said outer layer, said inner portion and the second portion of the inner catheter being sized and oriented to define an annular lumen therebetween to thereby receive a tubular medical device; and a handle disposed at the proximal end of the outer catheter, the handle configured to permit relative movement between the outer catheter and the inner catheter in order to invert or evert the extended portion of the inner liner.