Closure prosthesis for transcatheter placement
First Claim
1. A flexible closure prosthesis and transcatheter delivery system, wherein said closure prosthesis is adapted to seal across an opening of a fluid passageway within a living body, comprising:
- a flexible sealing element;
a flexible restraining element attached to said sealing element, said sealing element and said restraining element defining an integral closure prosthesis prior to delivery across the opening;
a hollow sheath;
a pusher catheter slidable within said sheath;
filament means for resiliently bending said closure prosthesis, said filament means releasably connecting said closure prosthesis to said pusher catheter;
said closure prosthesis being resiliently compressible into a first insertion form constrained within said sheath for delivery adjacent the opening, said closure prosthesis resiliently expanding after release from said sheath into a first operational form large than said first insertion form;
said closure prosthesis being resiliently compressible into a second insertion form constrained by said filament means for placement across the opening, said closure prosthesis resiliently expanding after release from said filament means into a second operational form larger than said second insertion form, wherein said sealing element seals across the opening and said restraining element restrains said closure prosthesis in place across the opening;
said flexible sealing element comprising a flexible ring having an opening therethrough and a flexible diaphragm attached to said ring and covering said opening; and
said flexible restraining element comprising a plurality of hollow flexible wire segments attached to said diaphragm.
1 Assignment
0 Petitions
Accused Products
Abstract
A closure prosthesis and transcatheter delivery system includes a closure prosthesis for sealing across all opening of a fluid passageway within a living body. The closure prosthesis is a flexible disk including a flexible ring and diaphragm having a plurality of hollow flexible wire segments attached thereto. Delivery of the closure prosthesis is accomplished using a hollow sheath and a pusher catheter slidable within the sheath, wherein filaments are looped through the wire segments to releasably connect the disk to the pusher catheter. The disk is resiliently compressed within the sheath and, upon release therefrom, the disk resiliently expands into a larger, unrestrained shape. Tension applied to the filaments resiliently bends the wire segments so that they may be drawn through the opening of the defect. Upon releasing the filaments from the disk, the wire segments resiliently expand to trap the disk in place to seal across the opening.
272 Citations
19 Claims
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1. A flexible closure prosthesis and transcatheter delivery system, wherein said closure prosthesis is adapted to seal across an opening of a fluid passageway within a living body, comprising:
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a flexible sealing element; a flexible restraining element attached to said sealing element, said sealing element and said restraining element defining an integral closure prosthesis prior to delivery across the opening; a hollow sheath; a pusher catheter slidable within said sheath;
filament means for resiliently bending said closure prosthesis, said filament means releasably connecting said closure prosthesis to said pusher catheter;said closure prosthesis being resiliently compressible into a first insertion form constrained within said sheath for delivery adjacent the opening, said closure prosthesis resiliently expanding after release from said sheath into a first operational form large than said first insertion form; said closure prosthesis being resiliently compressible into a second insertion form constrained by said filament means for placement across the opening, said closure prosthesis resiliently expanding after release from said filament means into a second operational form larger than said second insertion form, wherein said sealing element seals across the opening and said restraining element restrains said closure prosthesis in place across the opening; said flexible sealing element comprising a flexible ring having an opening therethrough and a flexible diaphragm attached to said ring and covering said opening; and said flexible restraining element comprising a plurality of hollow flexible wire segments attached to said diaphragm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for delivering a closure prosthesis for sealing across an opening of a fluid passageway within a living body, comprising the steps of:
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connecting a closure prosthesis to a pusher catheter, said closure prosthesis including a flexible sealing element and a flexible restraining element attached thereto; inserting said closure prosthesis and said pusher catheter into a sheath adjacent the opening, said closure prosthesis resiliently compressing into a first insertion form constrained within said sheath; releasing said closure prosthesis from said sheath adjacent the opening, said closure prosthesis resiliently expanding into a first operational form larger than said first insertion form adjacent the opening; resiliently compressing said closure prosthesis into a second insertion form, said restraining element being resiliently compressed to permit passage thereof through the opening; releasing said closure prosthesis from said pusher catheter, said closure prosthesis expanding into a second operational form larger than said second insertion form, wherein said sealing element seals across the opening and said restraining element restrains said closure prosthesis in place across the opening.
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11. A closure prosthesis and transcatheter delivery system for sealing an opening in a fluid passageway within a living body, comprising:
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a resiliently flexible sealing element; at least one flexible restraining element fixedly attached and extendable along one side of said sealing element, said restraining element and said sealing element defining an integral closure element; said integral closure element compressable into a reduced insertion form suitable for insertion through the fluid passageway and the opening but tending to resiliently assume a relatively thin shape with a surface area sufficiently large to cover the opening; said fixedly attached restraining element deformable into a reduced insertion form suitable for insertion through the fluid passageway and the opening but tending to resiliently assume a configuration extending adjacent said one side of said sealing element such that said integral closure element pinches an edge of the opening between a portion of said restraining element and said sealing element; a hollow sheath sized to fit through the opening and having a proximal end; a pusher catheter slidable within said sheath; and at least one filament slidably connected to said at least one restraining element and having ends extending proximally from said proximal end of said sheath. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A flexible closure prosthesis and transcatheter delivery system, wherein said closure prosthesis is adapted to seal across an opening of a fluid passageway within a living body, comprising:
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a flexible sealing element; a flexible restraining element attached to said sealing element, said sealing element and said restraining element defining an integral closure prosthesis prior to delivery across the opening; a hollow sheath; a pusher catheter slidable within said sheath; filament means coupling said closure prosthesis and said pusher catheter for bending said flexible restraining element; said closure prosthesis deformable into a first insertion form constrainable within said sheath for delivery adjacent the opening, said closure prosthesis being resiliently expandable upon release from said sheath into a first operational form that is larger than said first insertion form; and said flexible restraining element deformable into a second insertion form constrained by said filament means, said flexible restraining element resiliently expanding upon release of the constraint of said filament means into a second operational form that is larger than said second insertion form, wherein said sealing element seals across the opening and said restraining element restrains said closure prosthesis across the opening.
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Specification