Everting stent and stent delivery system
First Claim
1. A delivery device for delivering a stent, the device comprising:
- a delivery shaft defining a lumen; and
an elongate release member disposed within the lumen defined by the delivery shaft, the elongate release member releasably securing an everted distal region of the stent between a distal region of the elongate release member and a distal region of the delivery shaft when a distal end of the elongate release member is disposed within a distal region of the lumen defined by the delivery shaft such that a distal end of the everted distal region of the stent is disposed distally of a proximal end of the stent to releasably secure the everted distal region of the stent within the lumen defined by the delivery shaft, wherein longitudinal movement of the elongate release member disengages the everted distal region of the stent from the elongate release member and frees the stent from the delivery shaft, wherein when the distal end of the elongate release member is disposed within the distal region of the lumen defined by the delivery shaft, the distal end of the everted distal region is disposed within the lumen defined by the delivery shaft and the proximal end of the stent is disposed outside of the lumen defined by the delivery shaft.
3 Assignments
0 Petitions
Accused Products
Abstract
A delivery device includes a delivery tube having an elongate release member. An everted stent may be releasably captured by the elongate release member between the release member and the delivery tube. The captured and everted stent can be distally advanced to a target site, followed by manipulating the release member to free the captured stent. Some devices utilize distal advancement of the release member while other devices use proximal retraction of the release member to free the captured stent. Once released, the stent is free to self-expand or be expanded against the surrounding blockage and/or vessel walls. In some methods, a guide catheter or microcatheter is also included and disposed about the everted and captured stent to advance the stent, delivery tube, and release member to a location near the site to be stented.
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Citations
15 Claims
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1. A delivery device for delivering a stent, the device comprising:
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a delivery shaft defining a lumen; and an elongate release member disposed within the lumen defined by the delivery shaft, the elongate release member releasably securing an everted distal region of the stent between a distal region of the elongate release member and a distal region of the delivery shaft when a distal end of the elongate release member is disposed within a distal region of the lumen defined by the delivery shaft such that a distal end of the everted distal region of the stent is disposed distally of a proximal end of the stent to releasably secure the everted distal region of the stent within the lumen defined by the delivery shaft, wherein longitudinal movement of the elongate release member disengages the everted distal region of the stent from the elongate release member and frees the stent from the delivery shaft, wherein when the distal end of the elongate release member is disposed within the distal region of the lumen defined by the delivery shaft, the distal end of the everted distal region is disposed within the lumen defined by the delivery shaft and the proximal end of the stent is disposed outside of the lumen defined by the delivery shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification