Measuring lung volume changes by impedance pneumography

• US 10,034,620 B2
• Filed: 04/03/2013
• Issued: 07/31/2018
• Est. Priority Date: 04/03/2012
• Status: Active Grant

• Current Assignee: Tide Medical Oy
• Original Assignee: Tide Medical Oy
• Inventors: Seppa, Ville-Pekka, Viik, Jari
• Primary Examiner(s): KIM, EUN HWA
• Application Number:
  US14/390,229
• Publication Number:
  US 20150051469A1
• Time in Patent Office: 1,945 Days
• CPC Class Codes: A61B 5/0004 characterised by the type of physiological signal transmitted
• CPC Class Codes: A61B 5/0535 Impedance plethysmography for measuring blood flow A61B5/0295
• CPC Class Codes: A61B 5/0809 by impedance pneumography
• CPC Class Codes: A61B 5/091 Measuring volume of inspired or expired gases, e.g. to determine lung capacity
• CPC Class Codes: A61B 5/6805 Vests
• CPC Class Codes: A61B 5/6825 Hand
• CPC Class Codes: A61B 5/72 Signal processing specially adapted for physiological signals or for diagnostic purposes character recognition, recognising digital ink, document-oriented image-based pattern recognition G06V30/00; recognition or understanding of postal images G06V30/424

Abstract

A method, a sensor arrangement, an apparatus and a computer program product for measuring a change in lung volume, having measuring a parameter for impedance pneumography by using at least one electrode configured to be in contact with an arm of a human body and at least one electrode configured to be in skin contact with thorax of a human body.

Claims

1. A method for measuring a change in lung volume, comprising:

placing a first pair of electrodes in contact with opposite arms of a human body;

placing a second pair of electrodes in skin contact with the midaxillary line on opposite sides of the human body;

measuring a parameter for impedance pneumography by tetrapolar impedance measurement, comprises;

feeding a current to the first pair of electrodes in contact with the opposite arms of the human body and measuring a voltage by the second pair of electrodes in skin contact with the midaxillary line on opposite sides of the human body, or

feeding a current to the second pair of electrodes in skin contact with the midaxillary line on opposite sides of the human body and measuring a voltage by the first pair of electrodes in contact with the opposite arms of the human body.

2. The method according to claim 1, comprising preventing skin contact between the arms and a torso by an insulation material positioned between the arms and the torso, causing to prevent the current from passing through the skin contact.

3. The method according to claim 2, wherein the insulation material is a sleeve.

4. The method according to claim 2, wherein the insulation material is a shirt or a vest.