Surgery – Diagnostic testing – Detecting sound generated within body
Patent
1998-03-20
2000-12-12
O'Connor, Cary
Surgery
Diagnostic testing
Detecting sound generated within body
600502, 600503, 600500, 381173, 381176, 73727, A61B 502
Patent
active
061591661
ABSTRACT:
A method and a pulse pressure sensor for sensing an arterial pulse pressure waveform. In one embodiment, the pulse pressure sensor includes a housing, a diaphragm, a piezoelectric device, and a self-contained amplifier. The skin-contact diaphragm is attached across a recess or opening in the housing. The piezoelectric device has a first portion mounted in a fixed relationship to the housing and a second portion displacementally coupled to the diaphragm. The solid-state amplifier has a signal input coupled to the piezoelectric device, wherein the piezoelectric device and amplifier together have a frequency response at least including a range from below approximately 0.1 hertz to above approximately 250 hertz. In one such embodiment, the housing and the skin-contact diaphragm of the sensor are stainless steel. In one such embodiment, the diaphragm has a skin-contact surface with a skin-contact dimension of between approximately 0.4 inch and 0.6 inch. In one embodiment, the sensor includes a solid-state amplifier that includes a high-input-impedance MOSFET input stage having an input resistance high enough to provide a frequency response that extends below approximately 0.1 hertz.
REFERENCES:
patent: 3651353 (1972-03-01), Hugli et al.
patent: 4409983 (1983-10-01), Albert
patent: 4431873 (1984-02-01), Dunn et al.
patent: 4672976 (1987-06-01), Kroll
patent: 4784154 (1988-11-01), Shirley et al.
patent: 4889133 (1989-12-01), Nelson et al.
patent: 4947859 (1990-08-01), Brewer et al.
patent: 4949710 (1990-08-01), Dorsett et al.
patent: 4993422 (1991-02-01), Hon et al.
patent: 5035247 (1991-07-01), Heinmann
patent: 5211177 (1993-05-01), Chesney et al.
patent: 5240007 (1993-08-01), Pytel et al.
patent: 5241964 (1993-09-01), McQuilkin
patent: 5269312 (1993-12-01), Kawamura et al.
patent: 5316004 (1994-05-01), Chesney et al.
patent: 5337750 (1994-08-01), Walloch
patent: 5524637 (1996-06-01), Erickson
patent: 5544651 (1996-08-01), Wilk
patent: 5551437 (1996-09-01), Lotscher
patent: 5551438 (1996-09-01), Moses
patent: 5560366 (1996-10-01), Barada et al.
patent: 5577508 (1996-11-01), Medero
patent: 5584298 (1996-12-01), Kabal
patent: 5590661 (1997-01-01), Ohmori et al.
patent: 5592401 (1997-01-01), Kramer
patent: 5617868 (1997-04-01), Harada et al.
patent: 5623933 (1997-04-01), Amano et al.
patent: 5638823 (1997-06-01), Akay et al.
patent: 5640964 (1997-06-01), Archibald et al.
patent: 5642733 (1997-07-01), Archibald et al.
patent: 5647369 (1997-07-01), Petrucelli et al.
patent: 5649542 (1997-07-01), Archibald et al.
patent: 5671750 (1997-09-01), Shinoda
patent: 5704362 (1998-01-01), Hersh et al.
patent: 5752919 (1998-05-01), Schrimpf
"Acoustic Contact Sensor", Apollo Research Corp., Model 701010, 4, 5 Pages.
"Aging Arteries", Harvard Heart Letter, 8(2), 4 pgs., (Oct. 1997).
"Guide to Modern Piezoelectric Ceramics", Advertising Material from Morgan Matroc, Inc. (undated), 6 pages.
"Harvard Heart Letter", Harvard Medical School, 7(7), 5 pgs., (Mar. 1997).
"Nellcor's N-CAT Continuous Noninvasive Blood Pressure Monitor, Model N-500", Product Publication by Nellcor, Inc., 9 pages, (1991).
"Non-Invasive Arterial Waveform Analysis and Blood Pressure Measurement", Pulse Dynamic Oscillometrics Clinical Information, Pulse Metric, Inc., San Diego, CA, 4.
"Non-Invasive Blood Pressure/Pulse Rate Monitoring and Recording System", Portfolio.TM. Health Series, 6 pages.
Bing, et al., "Reversal of Acetylcholine Effect on Atherosclerotic Coronary Arteries by Estrogen: Pharmacologic Phenomenon of Clinical Importance?", Journal of the American college of Cardiology, 3 pages, (Aug. 1992).
Brinton, et al., "Arterial Compliance by Cuff Sphygmomanometer", Hypertension, 28(4), Application to Hypertension and Early Changes in Subjects at Genetic Risk, 599-603, (Oct. 1996).
Brinton, et al., "The Development and Validation of a New Non-invasive Method to Evaluate Ventricle Function During Routine Blood Pressure Monitoring", American Journal of Hypertension, 10(4) Part 2 (Abstract Issue), 2 pages, (1997).
Cohn, J.N., et al., "Noninvasive Pulse wave Analysis for the early detection of Vascular Disease", Hypertension, 26, 503-508, (Sep., 1995).
Glasser, et al., "Vascular Compliance and Cardiovascular Disease", AJH, 10(10), Part 1, 1175-1189, (Oct. 1997).
Kluger, J., "Beyond Cholesterol", Time, 48, (Aug. 4, 1997).
McVeigh, et al., "Vascular Abnormalities Associated with Long-term Cigarette Smoking Identified by Arterial Waveform Analysis", The American Journal of Medicine, 102, 227-231, (Mar. 1997).
Rajkumar, et al., "Hormonal Therapy Increases Arterial Compliance in Postmenopausal Women", JACC, 30(2), 350-356, (Aug. 1997).
Simon, et al., "Detection of Preclinical Atherosclerosis May Optimize the Management of Hypertension", AJH, 10(7) Part 1, 813-824, (Jul. 1997).
Yoshizawa, et al., "Classical but Effective Techniques for Estimating Cardiovascular Dynamics", IEEE Engineering in Medicine & Biology Magazine, 16(5), 106-112, (Sep.-Oct. 1997).
Chesney Charles F.
Morgan Dennis J.
O'Rourke Eugene A.
Riggs Michael T.
Thornton Fred Randall
Hypertension Diagnostics, Inc.
Natnithithadha Navin
O'Connor Cary
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