Disposable active pulse sensor
First Claim
1. An active pulse sensor in communication with a monitor, the active pulse sensor comprising:
- an emitter that generates optical radiation having a plurality of wavelengths and transmits the optical radiation into a tissue site;
a detector that generates a sensor signal responsive to the intensity of the optical radiation after attenuation by the pulsatile blood flow within the tissue site;
a motor that vibrates when energized in response to an activation signal; and
a tape means that is configured to removably attach the emitter, the detector and the motor to the tissue site so that vibration from the motor induces pulsatile blood flow within the tissue site when energized,wherein the sensor signal is communicated to the monitor, and the monitor is configured to;
determine a signal quality of the sensor signal indicative of pulsatile blood flow;
provide, based on the determined signal quality, the activation signal to the motor so as to induce pulsatile blood flow;
receive the sensor signal while the activation signal is provided to the motor; and
determine a physiological measurement using the sensor signal received while the activation signal is provided to the motor.
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Accused Products
Abstract
A disposable active pulse sensor has an emitter that generates optical radiation having a plurality of wavelengths, a detector that is responsive to the optical radiation and an unbalanced electrical motor that vibrates when energized. A tape assembly removably attaches the emitter, the detector and the unbalanced electrical motor to a tissue site. The tape assembly also physically mounts the emitter, the detector and the unbalanced electrical motor in a spatial arrangement so that vibration from the unbalanced electrical motor induces pulsatile blood flow within the tissue site, the emitter transmits the optical radiation into the tissue site and the detector generates a sensor signal responsive to the intensity of the optical radiation after attenuation by the pulsatile blood flow within the tissue site.
771 Citations
23 Claims
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1. An active pulse sensor in communication with a monitor, the active pulse sensor comprising:
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an emitter that generates optical radiation having a plurality of wavelengths and transmits the optical radiation into a tissue site; a detector that generates a sensor signal responsive to the intensity of the optical radiation after attenuation by the pulsatile blood flow within the tissue site; a motor that vibrates when energized in response to an activation signal; and a tape means that is configured to removably attach the emitter, the detector and the motor to the tissue site so that vibration from the motor induces pulsatile blood flow within the tissue site when energized, wherein the sensor signal is communicated to the monitor, and the monitor is configured to; determine a signal quality of the sensor signal indicative of pulsatile blood flow; provide, based on the determined signal quality, the activation signal to the motor so as to induce pulsatile blood flow; receive the sensor signal while the activation signal is provided to the motor; and determine a physiological measurement using the sensor signal received while the activation signal is provided to the motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of inducing pulsatile blood flow at a tissue site, the method comprising:
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obtaining a first measurement signal from a physiological sensor configured to provide the first measurement signal in response to detection of optical radiation after attenuation of the optical radiation by a tissue site; determining a signal quality of the first measurement signal; in response to determining that the signal quality of the first measurement signal is low, initiating application of a vibrational force to the tissue site so as to induce pulsatile blood flow; obtaining a second measurement signal from the physiological sensor during the application of the vibrational force; and determining a physiological measurement using the second measurement signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An active pulse sensor in communication with a patient monitor, the active pulse sensor comprising:
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a physiological parameter sensor means configured to sense at least pulsatile blood flow within a tissue site of a patient and generate a sensor signal; an active pulse means configured to induce pulsatile blood flow when activated; and a tape means that is configured to removably attach the physiological parameter sensor means and the active pulse means to the tissue site in a spatial arrangement so that the active pulse means induces pulsatile blood flow within the tissue site when activated, wherein the sensor signal is communicated to the monitor, and the monitor is configured to; determine a signal quality of the sensor signal indicative of pulsatile blood flow; activate, based on the determined signal quality, the active pulse means so as to induce pulsatile blood flow; and determine, based on the sensor signal communicated during activation of the active pulse means, a physiological measurement. - View Dependent Claims (20, 21, 22, 23)
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Specification