Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2006-05-16
2006-05-16
Nasser, Robert L. (Department: 3736)
Surgery
Diagnostic testing
Cardiovascular
C600S485000
Reexamination Certificate
active
07044917
ABSTRACT:
A method and apparatus are disclosed of utilizing a source of arterial and/or arteriolar pulse waveform data from a patient for the purpose of measuring pulsus paradoxus. The arterial pulse waveform data source described is a pulse oximeter plethysmograph but can be any similar waveform data source, including intra-arterial transducer, blood pressure transducer, or plethysmograph. Through incorporation of the measurements of values, such as the area under the pulse waveform curve, that are time-domain functions of a change in height of the pulse waveform over at least a partial duration of the waveform, embodiments of the present invention represent a significant improvement upon previously described methods of measuring pulsus paradoxus and, further, produce improved accuracy in measurement of the multiple contributing variables generating pulsus paradoxus, in particular the contribution of diastolic events, to the extent that the physical signs so measured can be regarded as “Revised Pulsus Paradoxus.”
REFERENCES:
patent: 5297548 (1994-03-01), Pologe
patent: 5849706 (1998-12-01), Molina Y Vedia et al.
patent: 5873359 (1999-02-01), Zapol et al.
patent: 6117087 (2000-09-01), Kamm et al.
patent: 6129675 (2000-10-01), Jay
patent: 6325761 (2001-12-01), Jay
patent: 6334065 (2001-12-01), Al-Ali et al.
patent: 6363268 (2002-03-01), Hanna et al.
patent: 6385471 (2002-05-01), Mortz
patent: 6869402 (2005-03-01), Arnold
patent: 2002/0013538 (2002-01-01), Teller
M. Shamir, et al.,Pulse oximetry plethysmographic waveform during changes in blood volume, British Journal of Anaesthesia,(1999) 82 (2): pp. 178-181.
J. Beatty and C. Figueroa,Period analytic algorithms for the estimation of selected spectral properties of short segments of EEG data, Behavior Research Methods&Instrument,1974, vol. 6, No. 2, pp. 293-295.
T. Hartern, M.D., et al.,Use of Pulsus Oximetry to Recognize Severity of Airflow Obstruction in Obstructive Airway Disease, Correlation With Pulsus Paradoxus, Clinical Investigations in Critical Care. CHEST,vol. 115 (2), Feb. 1999, pp. 475-481.
A. Awad, M.D., et al.,Different Responses of Ear and Finger Pulse Oximeter Wave From to Cold Pressor Test, Technology Computing and Simulation, Anesthesia Analg., 2001; vol. 92, pp. 1,482-1,486.
W. B. Murray & P.A. Foster,The Peripheral Pulse Wave: Information Overlooked,al of Clinical Monitoring, Sep. 1996, vol. 12, No. 5, pp. 365-377.
C. Anthony Ryan,Detection of Pulsus Paradoxus by Pulse Oximetry, AJDC. The Pediatric Forum,May 1998, Letter to Editor, vol. 142, p. 481-482.
V. Chadwick, et al.,Continuous non-invasive assessment of pulsus paradoxus, The Lancet,Feb. 22, 1992, vol. 339, pp. 495-496.
K. C. Bilchick, et al.,Paradoxical physical findings described by Kussmaul: pulsus paradoxus and Kussmaul's sign, The Lancet,Jun. 1, 2002, vol. 359 Issue 9321, pp. 1940-1942.
D.W. Steele, MD., et al.,Continuous Noninvasive Determination of Pulsus Paradoxus: A Pilot Study, Academic Emergency Medicine,Oct. 1995, 2 (10): 894-900.
Knobbe Martens Olson & Bear LLP
Nasser Robert L.
Precision Pulsus, Inc.
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