Apparatus and methods for delivery of multiple distributed stents
AssigneeXtent, Inc.
InventorsPablo Acosta, Bernard Andreas, Steve Landreville, David W. Snow
Life of this patent
Estimating the term…
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.
Claims89
A catheter for delivering a plurality of radially expandable prostheses to a treatment site, said catheter comprising:
- a sheath having a proximal end, a distal end, an opening at the distal end, and a passage in communication with the opening;
- an expandable member near the distal end of the sheath, the plurality of radially expandable prostheses positionable over the expandable member and movably disposed in the passage, the plurality of radially expandable prostheses comprising a first set of at least two radially expandable prostheses and a second set of at least one radially expandable prosthesis proximal the first set;
- and
- a valve member near the distal end of the sheath adapted for selectively retaining the second set of at least one prosthesis within the passage and to engage the plurality of prostheses whereby the plurality of prostheses may be moved relative to the expandable member by moving the sheath, wherein proximal retraction of the sheath relative to the expandable member moves the valve member thereby causing the first set of at least two prostheses to pass through the opening of the sheath and forming an axial gap between a proximal-most end of the first set of at least two prostheses and a distal-most end of the second set of at least one prosthesis, the second set of at least one prosthesis remaining unexpanded and being retained in the passage, and wherein the first set of at least two prostheses remain unexpanded and are simultaneously radially expandable by the expandable member after being passed through the opening of the sheath.
A catheter for delivering a plurality of radially expandable 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 catheter extending through the passage and being movable relative to the sheath, the plurality of radially expandable prostheses releasably coupled to and movably disposed in the passage, the plurality of radially expandable prostheses comprising a first set of at least two radially expandable prostheses and a second set of at least one radially expandable prosthesis proximal the first set;
- and
- a valve member adapted for retaining the second set of at least one prosthesis within the passage while allowing the first set of at least two prostheses to pass through the opening as the sheath moves relative to the catheter, the first set of at least two prostheses remaining unexpanded after being passed through the opening and being simultaneously radially expandable.
A catheter for delivering a plurality of radially expandable prostheses to a treatment site, said catheter comprising:
- a sheath having a proximal end, a distal end, an opening at the distal end, and a passage in communication with the opening;
- an expandable member disposed at least partially under the sheath, the plurality of radially expandable prostheses positionable over the expandable member and movably disposed in the passage, the plurality of radially expandable prostheses comprising a first set of at least two radially expandable prostheses and a second set of at least one radially expandable prosthesis proximal the first set;
- and
- a valve member near the distal end of the sheath adapted for selectively retaining the second set of at least one prosthesis within the passage and to engage at least one of the plurality of prostheses whereby the engaged prosthesis may be moved relative to the expandable member by moving the sheath, wherein proximal retraction of the sheath relative to the expandable member moves the valve member thereby causing the first set of at least two prostheses to pass through the opening of the sheath and forming an axial gap between a proximal-most end of the first set of at least two prostheses and a distal-most end of the second set of at least one prosthesis, the second set of at least one prosthesis remaining unexpanded and being retained in the passage, and wherein the first set of at least two prostheses remain unexpanded and are simultaneously radially expandable by the expandable member after being passed through the opening of the sheath.
Dependencies are inferred from the claim text.