Donald Hayes Arnold

US Patent:

6869402, Mar 22, 2005

Filed:

Aug 27, 2002

Appl. No.:

10/228641

Inventors:

Donald Arnold - Nashville TN, US

Assignee:

Precision Pulsus, Inc. - Nashville TN

International Classification:

A61B005/00

US Classification:

600500, 600485

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. ”.

US Patent:

7044917, May 16, 2006

Filed:

Nov 24, 2004

Appl. No.:

10/997098

Inventors:

Donald Arnold - Nashville TN, US

Assignee:

Precision Pulsus, Inc. - Nashville TN

International Classification:

A61B 5/00

US Classification:

600500, 600485

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. ”.

US Patent:

7828739, Nov 9, 2010

Filed:

Dec 21, 2005

Appl. No.:

11/314318

Inventors:

Donald H. Arnold - Franklin TN, US

Assignee:

Precision Pulsus, Inc. - Vancouver WA

International Classification:

A61B 5/00

US Classification:

600483, 600485, 600500, 600529

Abstract:

A method and apparatus are described for utilizing a source of vascular 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 an intra-arterial transducer, external blood pressure transducer, or plethysmograph. Through incorporation of measurements of values, such as an area under a pulse waveform curve, that are time-domain functions of a change in amplitude of the pulse waveform over a duration of the waveform, embodiments of the present invention represent a significant improvement upon previously described methods of measuring pulsus paradoxus.