Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2005-03-22
2005-03-22
Nasser, Robert L. (Department: 3736)
Surgery
Diagnostic testing
Cardiovascular
C600S485000
Reexamination Certificate
active
06869402
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: 6363269 (2002-03-01), Hanna et al.
patent: 6385471 (2002-05-01), Mortz
patent: 20020013538 (2002-01-01), Teller
DW STeele et al, “Continuous noninvasive determination of pulsus paradoxus: a pilot study,” The Acadamey of Emergency Medicine, Oct. 1995, 2(10), pp/ 894-900.*
Kenneth Bilchick et al, “Paradoxical physical findings described by Kussmaul: pulses paradoxus, and Kussmaul's sign,” The Lancet, vol. 359,. issue 9321, Jun. 2002, pp. 1940-1942.*
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&Instruments, 1974, vol. 6, No. 2, pp. 293-295.
T. Hartern, M.D., et al.,Use of Pulse 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 Form 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.
Knobbe Martens Olson & Bear LLP
Nasser Robert L.
Precision Pulsus, Inc.
LandOfFree
Method and apparatus for measuring pulsus paradoxus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring pulsus paradoxus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring pulsus paradoxus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3398116