Thermally-activated biocompatible foam occlusion device for self-expanding heart valves
First Claim
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1. A method of sealing a space between a prosthetic heart valve and adjacent tissue, the method comprising:
- loading the prosthetic heart valve into a delivery system including compressing a ring-shaped body disposed on an outer surface of the prosthetic heart valve and coupled to the prosthetic heart valve;
delivering the prosthetic heart valve and the ring-shaped body to a target site using the delivery system;
deploying the prosthetic heart valve and the ring-shaped body at the target site concurrently, including releasing the ring-shaped body from the delivery system such that it deforms to the adjacent tissue;
advancing an elongate shaft having forceps toward the deployed prosthetic heart valve;
grasping a metallic stent of the prosthetic heart valve with the forceps and delivering thermal energy to the ring-shaped body, via the forceps, to heat at least a portion of the ring-shaped body to at least a transition temperature thereby expanding the ring-shaped body; and
sealing the space between the prosthetic heart valve and the adjacent tissue with the expanded ring-shaped body disposed therebetween.
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Abstract
A structure for sealing a gap between a medical device and adjacent body tissue includes a ring-shaped body formed at least in part of a material that expands from a compressed condition to an expanded condition when heated to a transition temperature and that is adapted to conform to the body tissue in the expanded condition.
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Citations
11 Claims
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1. A method of sealing a space between a prosthetic heart valve and adjacent tissue, the method comprising:
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loading the prosthetic heart valve into a delivery system including compressing a ring-shaped body disposed on an outer surface of the prosthetic heart valve and coupled to the prosthetic heart valve; delivering the prosthetic heart valve and the ring-shaped body to a target site using the delivery system; deploying the prosthetic heart valve and the ring-shaped body at the target site concurrently, including releasing the ring-shaped body from the delivery system such that it deforms to the adjacent tissue; advancing an elongate shaft having forceps toward the deployed prosthetic heart valve; grasping a metallic stent of the prosthetic heart valve with the forceps and delivering thermal energy to the ring-shaped body, via the forceps, to heat at least a portion of the ring-shaped body to at least a transition temperature thereby expanding the ring-shaped body; and sealing the space between the prosthetic heart valve and the adjacent tissue with the expanded ring-shaped body disposed therebetween. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification