Method for the in-vivo non-invasive measurement of a biological parameter

• US 6,560,481 B1
• Filed: 06/15/2001
• Issued: 05/06/2003
• Est. Priority Date: 06/15/2001
• Status: Expired due to Fees

• Current Assignee: A.J. Van Liebergen Holding B.V.
• Original Assignee: A. J. Van Liebergen Holding B.V.
• Inventors: Hoetink, Alexander Emanuel, Heethaar, Robert Martin
• Primary Examiner(s): LEE, KEVIN L
• Application Number:
  US09/882,862
• Time in Patent Office: 690 Days
• Field of Search: 600/547, 600/536, 600/506
• US Class Current: 600/547
• CPC Class Codes: A61B 5/029 Measuring or recording blood output from the heart, e.g. minute volume A61B8/065 takes precedence
• CPC Class Codes: A61B 5/0295 using plethysmography, i.e. measuring the variations in the volume of a body part as modified by the circulation of blood therethrough, e.g. impedance plethysmography
• CPC Class Codes: A61B 5/0535 Impedance plethysmography for measuring blood flow A61B5/0295

Abstract

Method for the in-vivo non-invasive measurement of a biological parameter of a person employing the placement of current injecting electrodes on the person'"'"'s body, and the placement of measurement electrodes on said person'"'"'s body between the current injecting electrodes, feeding a measuring current through the current injecting electrodes and the body connected thereto, and measuring a voltage over the measurement electrodes indicative for the biological paramater, whereby a first measurement electrode is placed near a clavicle of the person and a second measurement electrode is placed at the person'"'"'s left hand side below the sternum.

Claims

1. A method for the in-vivo non-invasive measurement of a biological parameter of a person, the method comprising the steps of placing current injecting electrodes on the person'"'"'s body, placing measurement electrodes on said person'"'"'s body between the current injecting electrodes, feeding a measuring current through the current injecting electrodes and the body connected thereto, and measuring a voltage over the measurement electrodes indicative for the biological parameter, wherein a first measurement electrode is placed in the person'"'"'s triangular clavicular space between the person'"'"'s neck and shoulder and a second measurement electrode is placed at the person'"'"'s left hand side below the person'"'"'s sternum.

2. The method according to claim 1, wherein a lowest current injecting electrode is placed at least 6 cm below the second measurement electrode.

3. The method according to claim 2, wherein a lowest current injecting electrode is placed 15-20 cm below the second measurement electrode.