Apparatus and method for chronically monitoring heart sounds...

Surgery – Diagnostic testing – Cardiovascular

Reexamination Certificate

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Reexamination Certificate

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06869404

ABSTRACT:
A minimally invasive, implantable heart sound and ECG monitor and associated method for deriving blood pressure from heart sound data. The device is equipped with an acoustical sensor for detecting first and second heart sounds which are sampled and stored during sensing windows following R-wave and T-wave detections, respectively. ECG and heart sound data are stored in a continuous, looping memory, and segments of data are stored in long-term memory upon an automatic or manual data storage triggering event. Estimated blood pressure is calculated based on custom spectral analysis and processing of the first and second heart sounds. A calibration method includes measuring a patient's blood pressure using a standard clinical method and performing regression analysis on multiple spectral variables to identify a set of best fit weighted equations for predicting blood pressure. Concurrent ECG and estimated blood pressure may be displayed for review by a physician.

REFERENCES:
patent: 5117824 (1992-06-01), Keimel et al.
patent: 5313953 (1994-05-01), Yomtov et al.
patent: 5535752 (1996-07-01), Halperin et al.
patent: 5987352 (1999-11-01), Klein et al.
patent: 6230059 (2001-05-01), Duffin
patent: 6351670 (2002-02-01), Kroll
patent: 6409675 (2002-06-01), Turcott
patent: 6477406 (2002-11-01), Turcott
patent: 20040167416 (2004-08-01), Lee
patent: WO 9004942 (1990-05-01), None
Chen, D.,et al., “Estimation of Pulmonary Artery Pressure by Spectral Analysis of the Second Heart Sound”,American Journal Cardiology, 1996; vol. 78, pp. 785-789.
Adams, K., “Guiding Heart Failure Care by Invasive Hemodynamic Measurements: Possible or Useful?”,Journal of Cardiac Failure, vol. 8, No. 2, 2002, pp. 71-73.
Bartels, A., et al., “Non-invasive Determination of Systolic Blood Pressure by Heart Sound Pattern Analysis”,Clin. Phys. Physiol. Meas., 1992, Aug.; 13(3), pp. 249-256.
Xu, J., et al., “A New, Simple and Accurate Method for Non-Invasive Estimation of Pulmonary Arterial Pressure”,Heart, 2002, vol. 88, pp. 76-80.
Gulcur, H., et al., “Estimation of Systolic Blood Pressure from the Second Heart Sounds”,IEEE, 1997, pp. 39-41.

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