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US 8,449,625 B2Granted
Methods of measuring heart valve annuluses for valve replacement
AssigneeEdwards Lifesciences Corporation
InventorsLouis A. Campbell, Travis Z. Oba, Rafael Pintor
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Abstract
A device for measuring an expanded internal orifice of a patient includes an orifice-expanding device, a pressure measuring device, and a size-measuring device. The size-measuring device measures a dimension of the orifice after it has been expanded by the orifice-expanding device.
Claims28
A method of sizing a heart valve annulus for implant of a prosthetic heart valve, comprising:
- accessing a patient's heart valve annulus;
- placing an orifice-expanding device of a sizing apparatus into the annulus;
- expanding the orifice-expanding device to a desired pressure against the annulus such that the annulus expands, wherein the desired pressure is between about 250 mmHg and 500 mmHg;
- measuring a dimension of the expanded annulus;
- and
- selecting a prosthetic heart valve based on the measured dimension of the annulus.
3 more elements
A method of sizing a heart valve annulus for implant of a prosthetic heart valve, comprising:
- radially expanding a patient's heart valve annulus using a desired pressure on the annulus which is equal to at least the physiological pressure experienced by the annulus at its greatest diameter during the cardiac cycle, wherein the desired pressure is between about 250 mmHg and 500 mmHg;
- measuring a dimension of the expanded annulus;
- and
- selecting a prosthetic heart valve based on the measured dimension of the annulus.
1 more element
Dependencies are inferred from the claim text.