Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Reexamination Certificate
2004-02-26
2010-02-02
Winakur, Eric F (Department: 3768)
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
C600S450000, C600S462000, C600S465000
Reexamination Certificate
active
07654960
ABSTRACT:
A method and a device (1) for ultrasound measurement of the blood flow through a heart valve are proposed. To permit a simple, automated measurement, it is proposed that the measurement area (9) of a measurement beam (7) is moved three-dimensionally by means of a multi-array transducer (11) and continuously evaluated for characteristic Doppler signals. It is further proposed to evaluate several measurement beams (7) with offset spatial, partially overlapping measurement areas (9) and/or several reference beams (8) with offset spatial measurement areas (10) for determination of the opening surface area, the volumetric flow rate, the flow volume and/or a value proportional thereto.
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Buck, Thomas, et al., “Flow Quantification in Valvular Heart Disease Based on the Integral of Backscattered Acoustic Power Using Doppler Ultrasound”, Proceedings of the IEEE, vol. 88, No. 3, Mar. 2000.
Buck, Thomas, et al., “The Power-Velocity Integral at the Vena Contracta A New Method for Direct Quantification of Regurgitant Volume Flow”, Mass. Gen. Hospital, Harvard Medical School, Boston, Mass., Am. Heart Assoc., pp. 1053-1061, Mar. 29, 2000.
Fernandez Katherine L
Universität Duisburg-Essen
Winakur Eric F
Woodard Emhardt Moriarty McNett & Henry LLP
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