Modulated physiological sensor
AssigneeMasimo Corporation
InventorsMarcelo Lamego, Cristiano Dalvi, Hung Vo
Life of this patent
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Abstract
A modulated physiological sensor is a noninvasive device responsive to a physiological reaction of a living being to an internal or external perturbation that propagates to a skin surface area. The modulated physiological sensor has a detector configured to generate a signal responsive to the physiological reaction. A modulator varies the coupling of the detector to the skin so as to at least intermittently maximize the detector signal. A monitor controls the modulator and receives an effectively amplified detector signal, which is processed to calculate a physiological parameter indicative of the physiological reaction.
Claims9
-20. (canceled)
A modulated physiological sensor comprising:
- an accelerometer configured to generate a raw physiological signal responsive to a physiological process corresponding to a user, wherein the accelerometer is configured to be coupled to a skin surface of the user;
- and
- a modulator configured to introduce an external signal separate from the physiological signal to modulate the physiological signal, wherein the modulated physiological signal improves a measurement of a physiological parameter compared to the raw physiological signal.
Dependencies are inferred from the claim text.