Staged stent delivery systems
First Claim
Patent Images
1. A stent delivery system comprising:
- a self-expanding stent; and
a delivery guide comprising proximal and distal stent restraining members holding the stent in a reduced-diameter configuration, and a stent abutment feature to stabilize the stent;
wherein withdrawal of the proximal restraining member causes the release of the stent from the distal restraining member and from the proximal restraining member.
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Accused Products
Abstract
Medical devices and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures or a variety of other procedures. The various systems described employ self expanding stent restrained by tubular restraints. The systems are configured to reduce restraint actuation force relative to simple-sheath based stent delivery systems by actuation in a staged fashion.
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Citations
25 Claims
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1. A stent delivery system comprising:
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a self-expanding stent; and
a delivery guide comprising proximal and distal stent restraining members holding the stent in a reduced-diameter configuration, and a stent abutment feature to stabilize the stent;
wherein withdrawal of the proximal restraining member causes the release of the stent from the distal restraining member and from the proximal restraining member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 23, 25)
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17. A stent delivery system comprising
a self-expanding stent; - and
a delivery guide comprising an inner member, a radially expandable proximal restraining member holding the stent collapsed over the inner member, and a distal restraining member restraining the expansion of the radially expandable proximal restraining member, and a stent abutment feature, the stent abutment feature separated from the stent a distance great enough to allow the stent to translate over the inner member with the proximal restraining member for release from the distal restraining member before withdrawal of the proximal restraining member from the stent. - View Dependent Claims (18, 19, 20)
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21. (canceled)
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22. A method of delivering a stent, the method comprising:
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advancing a stent delivery system to a target location within a vessel;
removing a first restraint portion from the stent, without removing a second restraint portion from the stent; and
next removing the second restraint portion from the stent. - View Dependent Claims (24)
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Specification