Method and apparatus for noninvasive physiologic monitoring

• US 20030212315A1
• Filed: 03/12/2003
• Published: 11/13/2003
• Est. Priority Date: 03/12/2002
• Status: Active Grant

• Current Assignee: Sekos, Inc.
• Original Assignee: Sekos, Inc.
• Inventors: Wiesmann, William P., Pranger, Loland A., Bogucki, Mary S.
• Granted Patent: US 7,181,264 B2
• Time in Patent Office: Days
• US Class Current: 600/322
• CPC Class Codes: A61B 5/14551 for measuring blood gases
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6814 Head

Abstract

Intense environmental or working conditions can impede an individual'"'"'s evaporative cooling mechanism normally responsible for thermoregulation during exercise or exertion. Non-invasive physiological monitoring capabilities are needed to more precisely define the cardiovascular responses and identify markers of impending failure of compensatory mechanisms prior to collapse or onset of irreversible pathology. The oxymetry method and system of the present invention provides non-invasive, continuous remote monitoring and analysis of cardiovascular and pulmonary function that overcomes accuracy and monitoring deficiencies of current oximetry systems.

Claims

1. A method of using a SCBA mask having emitter and detector sensors for obtaining non-invasive pulsatile physiologic parameters and non-pulsatile physiologic parameters comprising the steps of:

(a) determining optimal distance between said emitters and said detectors;

(b) placing and securing said mask on an individual'"'"'s face and reducing incidences of motion artifact and orienting said emitter and detector sensors perpendicular to said individual'"'"'s forehead;

(c) supplying a light array from said emitter to said individual'"'"'s forehead and capillary bed and bouncing said array off said individual'"'"'s bone;

(d) detecting and transmitting said light to a remote processor; and

(e) obtaining said physiologic parameters.

2. A method for obtaining non-invasive pulsatile physiologic parameters and non-pulsatile physiologic parameters as recited in claim 1 and further comprising the steps of:

(a) using direct current signals and obtaining non-pulsatile readings;

(b) analyzing said non-pulsatile readings and obtaining said non-pulsatile physiologic parameters;

(c) using alternating current signals and obtaining pulsatile readings and

(d) analyzing said pulsatile readings and obtaining said pulsatile physiologic parameters.

3. A method for obtaining physiological parameters as recited in claim 2 wherein said non-pulsatile physiological parameters comprise mixed venous oxygen saturation, cardiac output, tissue perfusion and tissue oxygen demand.