×

Method and device for monitoring human respiration

  • US 5,107,845 A
  • Filed: 05/23/1990
  • Issued: 04/28/1992
  • Est. Priority Date: 11/23/1987
  • Status: Expired due to Fees
First Claim
Patent Images

1. Method for monitoring the respiration of an individual, comprising the steps of exposing the body of said individual at least partially to a luminous flux, forming on a set of photosensitive elements the image of at least one zone of the space exposed to said luminous flux and comprised in the observation field of an optical means associated with said photosensitive elements, said zone including at least one part of the body of the said individual liable to exhibit quasiperiodic movements associated with breathing, measuring and recording the brightnesses of areas of said image sensed by said photosensitive elements subjected to the luminous flux transmitted back by said zone, repeating said measuring and said recording at a predetermined reading frequency for recording the brightnesses of corresponding areas of successive images of said zone, comparing the brightnesses of said corresponding areas of successive images, and detecting a respiratory insufficiency, apnoea or dyspnoea, of said individual in the absence of significant variations or in the presence of abnormal variations in the spatial distribution of the brightnesses of the areas of successive compared images.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×