Apparatus and methods for delivery of multiple distributed stents
AssigneeXtent, Inc.
InventorsPablo Acosta, Bernard Andreas, Steve Landreville, David W. Snow
Life of this patent
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Abstract
Delivery catheters and systems are adapted for delivering multiple discreet prostheses in body lumens. An exemplary delivery catheter comprises a sheath, a pusher for moving the prostheses relative to the sheath, and a valve member for selectively retaining the prostheses in the sheath. For balloon expandable stents, an elongated shaft and an expandable member are slidably disposed in the sheath, and the prostheses are positionable on the expandable member for deployment in the body lumen. The valve member allows a selected number of prostheses to be deployed from the sheath while retaining other prostheses within the sheath.
Claims39
A catheter for delivering a plurality of prostheses to a treatment site comprising:
- a sheath having a proximal end, a distal end, an opening at the distal end, and an interior passage in communication with the opening, the plurality of prostheses being movably disposed in the passage;
- a shaft extending through the passage and being movable relative to the sheath, the shaft having an expandable member attached thereto, the prostheses being positionable over the expandable member;
- a pusher tube movably disposed in the passage and having a distal end configured to apply a distal force to the prostheses;
- and
- a valve member near the distal end of the sheath adapted for retaining the prostheses within the passage unless the distal force is applied to the prostheses by the pusher tube.
A catheter for delivering one or more prostheses to a treatment site comprising:
- a sheath having a proximal end, a distal end, an opening at the distal end, and an interior passage in communication with the opening;
- a plurality of prostheses movably disposed in the passage;
- a shaft extending through the passage and being movable relative to the sheath, the shaft having an expandable member attached thereto, the prostheses being positionable over the expandable member;
- a pusher movably disposed in the passage and configured to apply a distal force to the prostheses;
- and
- a valve member near the distal end of the sheath adapted for retaining the prostheses within the passage unless the distal force is applied to the prostheses by the pusher;
- wherein the number of prostheses deployed at once may be selected by exposing a first selected number of prostheses distally of the sheath for deployment while retaining a second selected number of prostheses within the sheath.
Dependencies are inferred from the claim text.