Back to results
US 2024/0238092 A1Published application
Artificial heart valves incorporating negative poisson's ratio materials
OwnerJoon Bu Parkinventor
Life of this patent
Estimating the term…
Abstract
An artificial heart valve includes a frame, one or more struts attached to the frame, and a leaflet configured to open and close a fluid flow path through the frame by moving in response to heartbeats. Movement of the leaflet is restricted by the one or more struts. The leaflet includes an inner leaflet body having a negative Poisson's ratio, and an outer leaflet body at least partially surrounding the inner leaflet body, the outer leaflet body having a positive Poisson's ratio.
Claims17
An artificial heart valve comprising:
- a frame;
- one or more struts attached to the frame;
- and
- a leaflet configured to open and close a fluid flow path through the frame by moving in response to heartbeats, wherein movement of the leaflet is restricted by the one or more struts, and
- wherein the leaflet comprises
- an inner leaflet body having a negative Poisson's ratio, and
- an outer leaflet body at least partially surrounding the inner leaflet body, the outer leaflet body having a positive Poisson's ratio, wherein the outer leaflet body comprises at least one of a metal or pyrolytic carbon.
4 more elements
A method of making an artificial heart valve, the method comprising:
- forming an inner leaflet body comprising a precursor material;
- applying a stimulus to the precursor material, the stimulus causing the precursor material to have a negative Poisson's ratio;
- forming an outer leaflet body at least partially surrounding the inner leaflet body, to form a leaflet comprising the inner leaflet body and the outer leaflet body, the outer leaflet body having a positive Poisson's ratio, wherein the outer leaflet body comprises at least one of a metal or pyrolytic carbon;
- and
- arranging the leaflet with respect to one or more struts of the artificial heart valve such that movement of the leaflet opens and closes a fluid flow path through the artificial heart valve, the one or more struts restricting movement of the leaflet.
2 more elements
Dependencies are inferred from the claim text.