Patent
Method and apparatus for monitoring respiration using signals from a piezoelectric sensor mounted on a substrate
TLDR
In this paper, a flexible piezoelectric film sensor was used to monitor the respiration of a patient by correlating the sound generated in the patient's airway with respiratory activity.Abstract:
A method and apparatus for monitoring and/or quantitatively measuring a patient's respiration using a flexible piezoelectric film sensor The apparatus includes a piezoelectric film which converts acoustical waves generated by the patient's respiration into electrical signals The piezoelectric film sensor can be used to monitor the respiration of a patient by correlating the sound generated in the patient's airway with respiratory activity Further, the data generated by the sensor may be further analyzed by a patient monitor to diagnose respiratory conditionsread more
Citations
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Patent
Monitoring, predicting and treating clinical episodes
Avner Halperin,Guy Meger +1 more
TL;DR: In this article, a breathing pattern analysis unit analyzes components of the sensed motion that result from the subject's respiration, including double-movement-respiration-cycle-pattern-identification functionality.
Patent
Non-invasive monitoring of respiratory rate, heart rate and apnea
TL;DR: In this article, a method and apparatus for estimating a respiratory rate of a patient was proposed, which comprises the steps of recording respiratory sounds of the patient, deriving a plurality of respiratory rates from the recorded sounds using a pluralityof respiratory rate estimating methods and applying a heuristic to the plurality of derived respiratory rates, the heuristic selecting one of the derived rates is the estimated respiratory rate.
Patent
Techniques for prediction and monitoring of clinical episodes
TL;DR: In this paper, a method for predicting the onset of an asthma attack is described, which includes sensing at least one parameter of a subject without contacting or viewing the subject or clothes the subject is wearing, and predicting onset of the asthma attack at least in part responsively to the sensed parameter.
Patent
Detection of disordered breathing
TL;DR: In this article, a sleep-disordered breathing is detected using the sensed signals associated with disordered breathing, which are then used to acquire a respiration pattern of one or more respiration cycles.
Patent
Device and method for passive patient monitoring
Patrick K. Sullivan,Ken C. K. Cheung,Christopher J. Sullivan,Paul Pernambuco-Wise,Scott Christensen,Mike Rosenman +5 more
TL;DR: In this article, the authors present a system for passive patient monitoring of such parameters as body motion, body position, respiratory rate and/or heart rate using two piezoelectric sensors provided on a surface, such as a bed, chair, operating table or the like.
References
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Patent
Physiological sensor array
William New,Andrea J. Harry,Paul Johnson,Harpal S. Kumar,William J. Mullarkey,Laurence J. Nicolson,John D. Place,Adrian J. Wilson +7 more
TL;DR: In this article, a physiological sensor device for attachment to a mammalian subject having an output transmitter, at least two physiological sensors each for sensing one of the subject's physiological parameters, and a controller which communicates with the output transmitter that operably transmits the signal to a remote location.
Patent
Passive apnea monitor
TL;DR: In this article, a patient lies down on a large piezoelectric film (few microns thick) that has the capability of measuring signals from very high to very low frequencies.
Patent
Obstructive sleep apnea detection apparatus and method using pattern recognition
TL;DR: In this article, an analog-to-digital converter is used to convert the first channel of airflow information in an analog format to a first channel in a digital format, and a filter is provided for filtering the airflow information to improve the signal-tonoise ratio of the signal.
Patent
Biological piezoelectric transducer device for the living body
TL;DR: In this paper, a high molecular piezoelectric element was used for measuring blood pressure, heart pulse, and heart sound, which was enclosed in netting comprised of a metal wire mesh so that the transducer is completely shielded from outer mechanical and electrical noise.
Patent
Apparatus for sensing respiration movements
TL;DR: In this article, an apparatus for accurately indicating respiration movements on a recorder is described, which consists of two piezoelectric transducers which are disposed parallel to each other and each mounted on a support member.