Electronic stethoscope measurement system and method

Details Electronic stethoscope measurement system and method Electronic stethoscope measurement system and method

2007-10-30

2007-10-30

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Stethoscopes, electrical

C434S266000

Reexamination Certificate

active

10715996

ABSTRACT:
A method and apparatus for characterizing the response of an electronic stethoscope. The sensor of the electronic stethoscope is held in contact with a test surface of a phantom. A shaker, which is coupled to a stinger rod that extends inside the phantom, is driven to produce internal vibrations in the phantom. Surface motion of the test surface of the phantom is measured using a surface accelerometer coupled to the test surface. Vibrations from the phantom are detected and an electric signal based on the detected vibrations is generated with the electronic stethoscope. A surface transfer function is calculated based on the measured surface motion and the electric signal to characterize the response of the electronic stethoscope.

REFERENCES:
patent: 3055356 (1962-09-01), Chouinard
patent: 3662076 (1972-05-01), Gordon et al.
patent: 3665087 (1972-05-01), Poylo
patent: 3888020 (1975-06-01), Krause
patent: 3947974 (1976-04-01), Gordon et al.
patent: 6220866 (2001-04-01), Amend et al.
Dale Groom M.D. et al., The Effect of Background Noise on Cardiac Auscultation, The American Heart Journal, Nov. 1956, pp. 781-790, vol. 53, No. 5.
John R. Kindig, M.D. et al., Acoustical performance of the stethoscope: A comparative analysis, The American Heart Journal, Aug. 1982, pp. 269-275, vol. 104, No. 2, Part 1, The C.V. Mosby Co.
K. E. Latimer, The Calibration of Stethoscopes and Phonocardiographic Microphones, Proc. 3rdWorld and 9thEurop. Congr. Ballistocard. and Cardiovasc. Dynamics, Sofia 1973. Bibl. cardiol. 33: 87-90.
Paul Y. Ertel et al., Stethoscope Acoustics and the Engineer: Concepts and Problems, Journal of the Audio Engineering Society, Mar. 1971, pp. 182-186, vol. 19, No. 3.
Maurice B. Rappaport et al., The Effects of Tubing Bore on Stethoscope Efficiency, The American Heart Journal, Jun. 11, 1951, pp. 605-609.
Maurice B. Rappaport et al., Physiologic and Physical Laws that Govern Auscultation, and Their Clinical Application, The American Heart Journal, Mar. 1941, pp. 257-318, vol. 21, No. 3.
T. J. Royston et al., Excitation and propagation of surface waves on viscoelastic half-space with application to medical diagnosis, Journal of Acoustical Society of America, Dec. 1999, pp. 3678-3686, 106(6).
T. J. Royston et al., Modeling sound transmission through the pulmonary system and chest with application to diagnosis of a collapsed lung, Journal of Acoustical Society of America, Apr. 2002, pp. 1931-1946, 111(4).
Vasant Padmanabhan et al., Accelerometer Type Cardiac Transducer for Detection of Low-Level Heart Sounds, IEEE Transactions on Biomedical Engineering, Jan. 1993, pp. 21-28, vol. 40, No. 1.
Manuel Abella et al., Comparison of the acoustic properties of six popular stethoscopes, The Journal of Acoustical Society of America, Apr. 1992, pp. 2224-2228, 91(4) Pt. 1.

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