Thermally-Activated Biocompatible Foam Occlusion Device for Self-Expanding Heart Valves
AssigneeSt. Jude Medical, Cardiology Division, Inc.
InventorsBenedict Skemp, Edward E. Parsonage, Tracee Eidenschink, Aditee Kurane
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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.
Claims22
A structure for sealing a gap between a medical device and adjacent body tissue, the structure comprising:
- 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.
A prosthetic heart valve, comprising:
- a collapsible and expandable stent;
- a valve assembly disposed in the stent for controlling the flow of blood through the stent;
- and
- a cuff disposed about the valve assembly, the cuff including a material that expands from a compressed condition to an expanded condition when heated to a transition temperature.
The prosthetic heart valve of claim 14, wherein the material comprises a biocompatible foam.
A method of sealing a space between a medical device and adjacent tissue, the method comprising:
- delivering the medical device and a ring-shaped body to a target site using a delivery system;
- delivering thermal energy to the ring-shaped body to heat at least a portion of the ring-shaped body to at least a transition temperature;
- expanding the ring-shaped body from a compressed condition to an expanded condition;
- and
- sealing the space between the medical device and the adjacent tissue with the expanded ring-shaped body disposed therebetween.
Dependencies are inferred from the claim text.