Respiration monitoring system and method

• US 10,064,570 B2
• Filed: 04/20/2016
• Issued: 09/04/2018
• Est. Priority Date: 04/01/2013
• Status: Active Grant

• Current Assignee: Medical Design Solutions, Inc.
• Original Assignee: Medical Design Solutions, Inc.
• Inventors: Stone, Robert T
• Primary Examiner(s): Natnithithadha, Navin
• Assistant Examiner(s): MESSERSMITH, ERIC J
• Application Number:
  US15/133,497
• Publication Number:
  US 20160228038A1
• Time in Patent Office: 867 Days
• CPC Class Codes: A61B 2562/0223 Magnetic field sensors
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/02055 Simultaneously evaluating both cardiovascular condition and temperature
• CPC Class Codes: A61B 5/08 Detecting, measuring or recording devices for evaluating the respiratory organs A61B5/0205 takes precedence
• CPC Class Codes: A61B 5/091 Measuring volume of inspired or expired gases, e.g. to determine lung capacity
• CPC Class Codes: A61B 5/1135 by monitoring thoracic expansion
• CPC Class Codes: A61B 5/6804 Garments; Clothes
• CPC Class Codes: A61B 5/6805 Vests
• CPC Class Codes: A61B 5/6831 Straps, bands or harnesses
• CPC Class Codes: A61B 5/7257 using Fourier transforms
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence

Abstract

A wearable respiration monitoring system and associated method that is configured to (i) determine three dimensional displacement of the spine of a subject with respect to the axial displacement of the subject'"'"'s chest wall, (ii) process the three dimensional anatomical data, (iii) determine at least one respiration parameter associated with the monitored subject as a function of the three dimensional anatomical data, and (iv) generate at least one respiration parameter signal representing the respiration parameter.

Claims

1. A wearable respiration monitoring system, comprising:

a circumferential band that is configured to be removably positioned on a subject, said subject comprising a spine and xyphoid process of a sternum,

said circumferential band being further configured to cover at least a chest region and an upper back region of a subject;

said circumferential band comprising a respiration detection system and integral signal transmission conductors disposed in a flexible configuration thereon,

said respiration detection system consisting of a permanent rare earth magnet and an electromagnetic coil, said rare earth magnet being adapted to generate a three-dimensional alternating current (AC) magnetic field, said three-dimensional AC magnetic field comprising a variable strength in at least one of said AC magnetic field dimensions,

said electromagnetic coil being adapted to receive said AC magnetic field and generate variable alternating current as a function of said variable strength in said at least one AC magnetic field dimension, said electromagnetic coil being further adapted to generate and transmit anatomical displacement signals as a function of said variable alternating current,

said electromagnetic coil being further adapted to detect said strength variations in said AC magnetic field dimension when said circumferential band is positioned on said subject, wherein said rare earth magnet is configured to be positioned proximate said subject'"'"'s spine within said upper back region of said subject and said electromagnetic coil is configured to be positioned proximate said xyphoid process of the sternum within said chest region of said subject, and wherein said rare earth magnet and said electromagnetic coil are configured to be in axial alignment at a first distance from each other when said subject is in a first anatomical position and a second distance from each other when said subject is in a second anatomical position, said second position comprising an expanded chest wall of said subject,

said strength variations in said AC magnetic field dimension representing variations in said second distance between said rare earth magnet and said electromagnetic coil relative to said first distance between said rare earth magnet and said electromagnetic coil, said variations in said second distance between said rare earth magnet and said electromagnetic coil relative to said first distance between said rare earth magnet and said electromagnetic coil corresponding to anatomical displacements of said subject'"'"'s xyphoid process relative to said subject'"'"'s spine,

said anatomical displacements corresponding to variations in said variable alternating current of said electromagnetic coil, said variations in said electromagnetic coil variable alternating current being represented by a plurality of anatomical signals; and

an electronics module in communication with said electromagnetic coil, said electronics module being adapted to receive said anatomical displacement signal,

said electronics module comprising a processing system and a data transmission system, said processing system being configured to control said respiration detection system,

said processing system being programmed and further configured to determine at least one respiration parameter of said subject as a function of said plurality of anatomical displacement signals, and generate at least one respiration parameter signal representing said at least one respiration parameter,

said data transmission system being adapted to receive said at least one respiration parameter signal from said processing system and wirelessly transmit said at least one respiration parameter signal to a display device,

said display device being configured to convert said at least one respiration parameter signal to a respiration parameter of said subject, and display said respiration parameter on a display screen.

2. The physiological monitoring system of claim 1, wherein said permanent rare earth magnet comprises a neodymium (Nd₂Fe₁₄B) magnet.

3. The physiological monitoring system of claim 1, wherein said display device comprises a remote display unit.

4. The physiological monitoring system of claim 1, wherein said circumferential band further comprises a body temperature sensing system comprising at least one temperature sensor that is adapted to detect body temperature of said subject, said body temperature sensing system being in communication with said subject and operatively connected to said signal transmission conductors, said body temperature sensing system being further adapted to generate and transmit a body temperature signal representing said subject body temperature.

5. The physiological monitoring system of claim 4, wherein said display device is further configured to receive said body temperature signal, convert said body temperature signal to a body temperature parameter, and display said body temperature parameter on said display screen of said display device.