Methods of measuring heart valve annuluses for valve replacement
First Claim
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1. 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.
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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.
453 Citations
28 Claims
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1. A method of sizing a heart valve annulus for implant of a prosthetic heart valve, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 26, 27, 28)
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15. A method of sizing a heart valve annulus for implant of a prosthetic heart valve, comprising:
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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. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification