Prosthetic heart valves with elastic support structures and related methods
First Claim
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1. A method of using a prosthetic heart valve, comprising:
- using the prosthetic heart valve within a living subject, wherein the prosthetic heart valve comprises a plurality of synthetic leaflets and a support structure, the support structure comprising;
a plurality of projections coupled with the plurality of leaflets; and
a base upstream of the plurality of projections, wherein the plurality of projections and the base are elastic, wherein the support structure has a rigidity per unit force (RUF) of 900 to 1400 square millimeters,wherein the prosthetic heart valve has a closed position and an open position, and the plurality of leaflets and the support structure move between the closed position and the open position during use,wherein the prosthetic heart valve permits fluid flow in an upstream to downstream direction when a transvalve fluid pressure is positive, and the plurality of leaflets are in a coapted state when the transvalve fluid pressure is a peak negative pressure, andwhen the transvalve fluid pressure is a negative value less than the peak negative pressure, the plurality of projections automatically begin movement from the closed position to the open position.
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Abstract
Prosthetic heart valves having elastic leaflets and an elastic support structure are described. The support structure can store a load transferred from the leaflets as potential energy and then release it in the form of kinetic energy to exhibit a precursory transition from the closed position to the open position. The support structures can exhibit a sinusoidal movement profile at a base edge during the precursory transition.
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Citations
24 Claims
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1. A method of using a prosthetic heart valve, comprising:
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using the prosthetic heart valve within a living subject, wherein the prosthetic heart valve comprises a plurality of synthetic leaflets and a support structure, the support structure comprising; a plurality of projections coupled with the plurality of leaflets; and a base upstream of the plurality of projections, wherein the plurality of projections and the base are elastic, wherein the support structure has a rigidity per unit force (RUF) of 900 to 1400 square millimeters, wherein the prosthetic heart valve has a closed position and an open position, and the plurality of leaflets and the support structure move between the closed position and the open position during use, wherein the prosthetic heart valve permits fluid flow in an upstream to downstream direction when a transvalve fluid pressure is positive, and the plurality of leaflets are in a coapted state when the transvalve fluid pressure is a peak negative pressure, and when the transvalve fluid pressure is a negative value less than the peak negative pressure, the plurality of projections automatically begin movement from the closed position to the open position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification