System and method for measuring blood parameters
First Claim
1. A system for measuring level of at least one analyte of a subject, the system comprising:
- a probe for attaching to the subject, said probe carrying an optical assembly configured and operable for applying optical measurements to a measurement location in the subject and generating optical measured data indicative thereof, the optical measurements comprising measurements taken from the measurement location in at least one of pulsatile and occlusive blood states;
an auxiliary system comprising a pressure system configured and operable for controllably applying pressure to the subject in the vicinity of the measurement location and affecting at least one of said pulsatile and occlusive blood states at the measurement location, and a pressure sensor system in fluid connection with the pressure system for measuring changes of pressure inside the pressure system during the application of said pressure to the subject in the vicinity of the measurement location and generating pressure data, said pressure data being thereby indicative of the pressure changes in the pressure system caused by volumetric changes in the measurement location to which said pressure is being applied; and
a control system configured and operable for receiving and processing the pressure data and the optical measured data, determining at least one relation between the optical measured data and the corresponding pressure data, and analyzing said at least one relation for determining the at least one analyte of the subject.
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Accused Products
Abstract
The present invention provides techniques for measuring one or more parameters of a subject using a probe having an optical assembly configured and operable for applying optical measurements to a measurement location in a subject and generating optical measured data indicative thereof comprising at least one of pulsatile and occlusion measurements, a pressure system configured and operable for controllably applying pressure to the subject in the vicinity of the measurement location and measuring pressure inside the pressure system and generating pressure data indicative thereof, and a control system configured and operable for receiving and processing the pressure data to identify whether the optical measured data is valid, and for processing the valid optical measured data and determining at least one relation between the valid optical measured data and the corresponding pressure data indicative of at least one parameter of the subject.
19 Citations
30 Claims
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1. A system for measuring level of at least one analyte of a subject, the system comprising:
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a probe for attaching to the subject, said probe carrying an optical assembly configured and operable for applying optical measurements to a measurement location in the subject and generating optical measured data indicative thereof, the optical measurements comprising measurements taken from the measurement location in at least one of pulsatile and occlusive blood states; an auxiliary system comprising a pressure system configured and operable for controllably applying pressure to the subject in the vicinity of the measurement location and affecting at least one of said pulsatile and occlusive blood states at the measurement location, and a pressure sensor system in fluid connection with the pressure system for measuring changes of pressure inside the pressure system during the application of said pressure to the subject in the vicinity of the measurement location and generating pressure data, said pressure data being thereby indicative of the pressure changes in the pressure system caused by volumetric changes in the measurement location to which said pressure is being applied; and a control system configured and operable for receiving and processing the pressure data and the optical measured data, determining at least one relation between the optical measured data and the corresponding pressure data, and analyzing said at least one relation for determining the at least one analyte of the subject. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system for measuring level of at least one analyte of an examined tissue, the system comprising:
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at least one expandable element configured and operable to apply pressure to a vicinity of a measurement location on the tissue, to permit a pulsatile blood state in said tissue in an unexpanded state of the expandable element, and to apply an occlusive blood state in said tissue in an expanded state thereof; an optical assembly configured to detect light response of the measurement location to incident light and generate optical measurement data indicative of the detected light response, while the examined tissue is in at least one of said pulsatile and occlusive blood states; a pressure sensor fluidly coupled to said at least one expandable element and being configured and operable to generate pressure measurement data indicative of pressure applied to said at least one expandable element from said tissue being in at least one of said pulsatile and occlusive blood states; and a processor configured to process said pressure and optical measurement data, validate at least one of said optical and pressure measurement data based on at least one of the measurements data, and whenever it is determined that said data is valid calculate at least one relation between the optical and the pressure measurement data, said at least one relation being indicative of said at least one analyte of the examined tissue.
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22. A method for measuring by a computerized device level of at least one analyte in a subject, said computerized device comprising at least one processor and one or more memories for storing instructions executable by said at least one processor and configured to carry out the following:
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operating a pressure system for applying pressure to the subject in the vicinity of a measurement location in the subject and affecting at least one of pulsatile and occlusive blood states at said measurement location; receiving from an optical assembly configured to communicate with said computerized device optical measured data taken from said measurement location while in said at least one of the pulsatile and occlusive blood states; receiving from a pressure sensor being in fluid connection with the pressure system and configured to communicate with said computerized device pressure data indicative of pressure changes inside the pressure system that are due to vascular volumetric changes in the measurement location in the subject while in the at least one of the pulsatile and occlusive blood states during which the optical measured data is obtained; processing the optical measured data and the pressure data and determining at least one relation between said optical measured data and said pressure data; and determining said at least one analyte of the subject based on said at least one relation. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification