METHOD AND APPARATUS FOR CONTROL OF NON-INVASIVE PARAMETER MEASUREMENTS
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Accused Products
Abstract
Improved methods and apparatus for non-invasively assessing one or more parameters associated with fluidic systems such as the circulatory system of a living organism, when such parameters are potentially affected by other concurrent events. In one exemplary embodiment, apparatus and methods for compensating for occlusive events (e.g., pressure cuff inflation) occurring ipsilateral to the location of parameter measurement are disclosed. Upon passive detection of signal degradation resulting from the event, the apparatus selectively enters a “wait state” wherein further processing of the hemodynamic data is suspended until the degrading event subsides. This behavior mitigates any adverse effects the event might have on the accuracy of the representation of the measured hemodynamic parameter generated by the system. In another exemplary embodiment, the measured data is analyzed in order to classify the type of event (e.g., occlusive or other), such classification allowing the system to appropriately tailor its response to the event.
7 Citations
51 Claims
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1-31. -31. (canceled)
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32. Hemodynamic parameter measurement apparatus, comprising:
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first apparatus configured to non-invasively measure a hemodynamic parameter at a first location on a living subject; second apparatus configured to passively detect a degrading event which occurs within a blood vessel at a location ipsilateral to said first location of said subject; and third apparatus configured to mitigate effects of said degrading event on said measurement. - View Dependent Claims (33, 34, 35, 36, 37, 51)
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38. A method of mitigating an effect of a degrading event on a hemodynamic parameter obtained from a hemodynamic parameter measurement apparatus applied to a living subject, said method comprising:
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measuring said hemodynamic parameter at a first location on said living subject; passively detecting an event occurring within a blood vessel at a location ipsilateral to said first location of said living subject; and mitigating effects of said event on said act of measuring. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45)
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46. Computer readable apparatus comprising media comprising a computer program having a plurality of instructions, said plurality of instructions configured to, when executed, cause a hemodynamic parameter measurement apparatus to:
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measure a hemodynamic parameter at a first location on a living subject; passively detect a blood-vessel event which causes a degradation of said measurement of said hemodynamic parameter, said event being localized within said blood vessel at a location ipsilateral to said first location of said living subject; and mitigate effects of said blood-vessel event on said measurement of said hemodynamic parameter. - View Dependent Claims (47, 48, 49, 50)
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Specification