Pushable implant delivery system
First Claim
Patent Images
1. A vascular prosthesis delivery device comprising:
- an inner tube accommodating a guidewire;
a prosthesis having a length;
a pusher element movable over the inner tube, the pusher element having recesses accommodating a proximal portion of the prosthesis;
a tip member movable over the inner tube, the tip member having recesses accommodating a distal portion of the prosthesis; and
,a delivery sheath disposed over the inner tube and the pusher element;
wherein movement of the pusher element is configured to move the tip member from a first position abutting the sheath to a second position distal of and spaced apart from the sheath so as to create a gap between the sheath and the tip member;
said gap being smaller than the length of the prosthesis and configured to allow the prosthesis to be advanced out of the gap.
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Accused Products
Abstract
An implant delivery system is described, having a distal tip and outer sheath that remain in a fixed position during implant delivery. A pusher mechanism within the sheath pushes an implant out of a gap between a distal end of the sheath and the distal tip.
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Citations
17 Claims
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1. A vascular prosthesis delivery device comprising:
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an inner tube accommodating a guidewire; a prosthesis having a length; a pusher element movable over the inner tube, the pusher element having recesses accommodating a proximal portion of the prosthesis; a tip member movable over the inner tube, the tip member having recesses accommodating a distal portion of the prosthesis; and
,a delivery sheath disposed over the inner tube and the pusher element; wherein movement of the pusher element is configured to move the tip member from a first position abutting the sheath to a second position distal of and spaced apart from the sheath so as to create a gap between the sheath and the tip member;
said gap being smaller than the length of the prosthesis and configured to allow the prosthesis to be advanced out of the gap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vascular prosthesis delivery system comprising:
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an inner tube accommodating a guidewire; a prosthesis with enlarged proximal and distal bulbs, the prosthesis located circumferentially around the inner tube; a pusher element movable over the inner tube and having recesses sized to accommodate the proximal enlarged bulbs of the prosthesis; a tip member movable over the inner tube and having recesses sized to accommodate the enlarged distal bulbs of the prosthesis; and
,a delivery sheath disposed over the inner tube and the pusher element; wherein the tip member is distally slidable relative to the sheath so as to create a pap with the sheath that is smaller than a length of the prosthesis; and
,wherein distally moving said pusher element advances said prosthesis out of said gap. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A vascular prosthesis kit comprising:
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a delivery sheath; a prosthesis pre-loaded within a distal portion of the delivery sheath, the prosthesis having enlarged proximal and distal bulbs; an inner tube under the prosthesis, the inner tube accommodating a guidewire; a pusher element movable over the inner tube and connected to the proximal bulbs of the prosthesis; the delivery sheath disposed over the inner tube and the pusher element;
a tip member movable via user-initiated movement of the pusher element over the inner tube from a first position abutting the sheath to a second position distal of and spaced apart from the sheath;
the tip member being connected to the distal bulbs of the prosthesis;wherein distally advancing the pusher element and the prosthesis over the inner tube opens a gap between the tip member and a distal end of the sheath;
the gap being shorter than a length of the prosthesis and configured to allow the prosthesis to be advanced there out of.
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Specification