Detection and Monitoring of Respiratory Conditions with Photoplethysmography (PPG)
AssigneeImperial College Innovations Limited
InventorsHarry John Davies, Danilo Mandic, Nicholas Peters
Life of this patent
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Abstract
Disclosed herein is an apparatus for determining a severity of a respiratory condition. The apparatus comprises means for receiving data indicative of an intensity of light detected during a photoplethysmography measurement. The apparatus comprises means for determining an indication of intrathoracic pressure based on the received data. The apparatus further comprises means for determining a severity of a 10 respiratory condition based on the determined indication of intrathoracic pressure. A system comprising the apparatus and a sensor for photoplethysmography measurement is also provided.
Claims20
An apparatus for determining a severity of a respiratory condition, the apparatus comprising:
- means for receiving data indicative of an intensity of light detected during a photoplethysmography measurement;
- means for determining an indication of intrathoracic pressure based on the received data;
- and
- means for determining a severity of a respiratory condition based on the determined indication of intrathoracic pressure.
An apparatus for detecting an obstructive respiratory condition, the apparatus comprising:
- means for receiving data indicative of an intensity of light detected during a photoplethysmography measurement over a respiratory cycle;
- means for determining a first indication of intrathoracic pressure during an expiration phase of the respiratory cycle based on the received data;
- means for determining a second indication of intrathoracic pressure during an inspiration phase of the respiratory cycle based on the received data;
- and
- means for detecting an obstructive respiratory condition based on a ratio of the first and second indications of intrathoracic pressure.
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A method performed by one or more processors of an apparatus, the method comprising:
- receiving data indicative of an intensity of light detected during a photoplethysmography measurement;
- determining an indication of intrathoracic pressure based on the received data;
- determining a severity of a respiratory condition based on the determined indication of intrathoracic pressure.
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Dependencies are inferred from the claim text.