Portable VO2 meter

• US 20050004488A1
• Filed: 05/24/2004
• Published: 01/06/2005
• Est. Priority Date: 05/27/2003
• Status: Abandoned Application

• Current Assignee: Vacumetrics Inc.
• Original Assignee: Vacumetrics Inc.
• Inventors: Hoppe, John, Huszcza, Andrew
• Application Number:
  US10/851,237
• Publication Number:
  US 20050004488A1
• Time in Patent Office: Days
• US Class Current: 600/529
• CPC Class Codes: A61B 2560/0242 adapted to measure environmental factors, e.g. temperature, pollution
• CPC Class Codes: A61B 5/0205 Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• CPC Class Codes: A61B 5/0833 Measuring rate of oxygen consumption

Abstract

A method of determining VO2 for an individual from known or predicted RQ values, for example at RQ≅1; (i) providing an oxygen sensor, (ii) providing preferably bi-directional, respiratory flow sensing, (iii) determining the onset of the sustained rise of the ventilatory equivalent for oxygen, Ve/VO2, (iv) providing calculated VO2 values with RQ-based adjustments even in the absence of available CO2 data.

Claims

1. A method of determining VO2 for an individual from known or predicted RQ values, for example at RQ≅

1;

(i) providing an oxygen sensor,

(ii) providing preferably bi-directional, respiratory flow sensing,

(iii) determining the onset of the sustained rise of the ventilatory equivalent for oxygen, Ve/VO2,

(iv) providing calculated VO2 values with RQ-based adjustments even in the absence of available CO2 data.

2. A device for determining VO2 from known or predicted RQ values for implementing the method of claim 1 comprising,

an oxygen sensor but lacking a CO2 sensor,

a respiratory flow sensor,

and computer related interfaces and software

thereby determining accurate VO2 measurement for an individual during exercise.

3. A device for determining VO2 from known or predicted RQ values comprising,

an oxygen sensor but lacking a CO2 sensor,

a respiratory flow sensor,

and computer related interfaces and software

thereby determining accurate VO2 measurement for an individual during exercise.

6. The meter of claim 3 wherein said meter is portable.

4. A VO2 meter for determining VO2 from known or predicted RQ values comprising, a patient interface,

an O2 sensor,

a flow (volume) meter, (in one embodiment bi-directional)

a heart rate pickup device, for example by “

Polar”

,

a mixing chamber, (preferably a mini-mixing chamber),

temperature and

barometric pressure sensors,

a memory and a PC interface such as a USB

thereby determining accurate VO2 measurement for an individual during exercise.

5. The meter of claim 4 wherein said memory and interface further comprise up to 90 minutes of breath-by-breath data, to be downloaded to a PC for further evaluation.

7. The meter of claim 4 wherein said meter is portable.

8. A VO2 meter comprising a patient interface, an O2 sensor, a bi-directional flow (volume) meter, a heart rate pickup device, a mini-mixing chamber, temperature and barometric pressure sensors, a memory and a PC interface such as a USB thereby determining accurate VO2 measurement for an individual during exercise.

9. The meter of claim 8 wherein the USB memory and interface further comprise up to 90 minutes of breath-by-breath data, to be downloaded to a PC for further evaluation.

10. The meter of claim 8 wherein said meter is portable.