Biocompatible foam occlusion device for self-expanding heart valves
AssigneeAGA Medical Corporation
InventorBenedict Skemp
Life of this patent
Estimating the term…
Abstract
A self-expandable ring seals a gap between a medical device and adjacent body tissue. The ring is disposed about the medical device and configured to self-expand from a first radius in a compressed condition to a second radius in an expanded condition, the second radius being greater than the first radius. The ring may be formed from a compliant biocompatible foam configured and arranged to conform to the body tissue.
Claims20
A biocompatible foam structure for sealing a gap between a medical device and adjacent body tissue, the structure comprising:
- an expandable ring-shaped body configured to be disposed about the medical device and to expand from a first radius in a compressed condition to a second radius in an expanded condition, the second radius being greater than the first radius, the body being formed from a compliant biocompatible configured and arranged to conform to the body tissue.
A prosthetic heart valve, comprising:
- a collapsible and expandable stent having a proximal end, a distal end, an annulus section adjacent the proximal end and an aortic section adjacent the distal end;
- a collapsible and expandable valve assembly disposed within the stent and including a plurality of leaflets;
- a cuff annularly disposed about the valve assembly in the annulus section;
- and
- a ring-shaped body disposed about the stent and configured to expand from a first radius in a compressed condition to a second radius in an expanded condition, the second radius being greater than the first radius, the body being formed from a compliant biocompatible foam configured to conform to body tissue.
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 having a sheath disposed over the medical device and the body;
- removing the sheath to expose the medical device and the body such that the medical device and the body expand;
- and
- sealing the space between the expanded medical device and the adjacent tissue with the expanded body disposed therebetween.
Dependencies are inferred from the claim text.