NON-INVASIVELY MONITORING BLOOD PARAMETERS
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Accused Products
Abstract
An apparatus for monitoring vital sign parameters in a biological entity is disclosed. In an embodiment, the apparatus includes at least one light source for transmitting light through the biological entity and at least one photodetector for receiving light transmitted through the biological entity. At least one light source and at least one photodetector are configured to be positioned proximate the biological entity in a manner that does not significantly impede blood flow through the biological entity. A signal is generated in response to the transmittance or reflectance of light through the biological entity. The signal corresponds to at least one characteristic of the generally unimpeded blood flow through the biological entity. The apparatus also includes a control system configured to analyze the signal to determine vital sign parameters in the biological entity. A method for monitoring vital sign parameters in a biological entity is also provided.
30 Citations
119 Claims
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1-79. -79. (canceled)
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80. A system comprising:
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a processor; a first sensor, configured to be placed proximate to a biological entity and to be in communication with the processor; and a memory storing instructions executable by the processor for acquiring a response from the first sensor, analyzing the response, and determining a set of characteristics of the biological entity, wherein the set of characteristics includes at least one of a blood parameter and a physiological marker, and wherein analyzing the response includes calculating the upward slope of the response and determining Myocardial Contractility based on the calculated slope. - View Dependent Claims (81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91)
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92. A system comprising:
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a processor; a sensor, configured to be placed proximate a biological entity, in communication with the processor; a device configured to selectively obstruct blood flow through the biological entity; and a memory storing instructions executable by the processor for causing the device to progressively obstruct blood flow through the biological entity, acquiring a sequence of responses from the sensor during the progressive blood flow obstruction, analyzing the sensor response, determining blood pressure, developing an envelope having a lower limit band and upper limit band wherein the envelope is developed around the sequence of acquired sensor responses, calculating the upward slope of a steady state portion of the response, and determining Myocardial Contractility based on the slope. - View Dependent Claims (93, 94, 95, 96, 97, 98, 99, 100, 101)
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102. A system comprising:
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a processor; a sensor, configured to be placed proximate a biological entity, in communication with the processor; a memory storing instructions executable by the processor for analyzing a response from the sensor corresponding to at least one characteristic of blood flow through the biological entity, sampling the response at periodic times, developing a reference envelope having a lower limit band and an upper limit band, employing the reference envelope to monitor subsequent responses, and determining when the response crosses the envelope upper or lower limit.
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103. A system comprising:
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a processor; a sensor, configured to be placed proximate a biological entity, in communication with the processor; a memory storing instructions executable by the processor for sampling the response of the sensor at periodic times to develop a reference envelope having a lower limit band and an upper limit band, and creating at least one database containing envelopes that correspond at least one of the biological entity and a representative population categorized by at least one of age, gender, height, weight, race, geographic residence, medical history, medical condition, education, military service, and occupation. - View Dependent Claims (104)
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105. A system comprising:
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a processor; a sensor, configured to be placed proximate a biological entity, in communication with the processor; a memory storing instructions executable by the processor for analyzing a response from the sensor corresponding to at least one characteristic of blood flow through the biological entity, wherein analyzing the response includes calculating the area under a portion of the curve of the response, and determining at least one of Tissue Perfusion and Vascular Elasticity. - View Dependent Claims (106)
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107. A system comprising:
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a processor; a sensor, configured to be placed proximate a biological entity, in communication with the processor; a device configured to selectively obstruct blood flow through the biological entity; and a memory storing instructions executable by the processor for causing the device to progressively obstruct blood flow through the biological entity, acquiring a sequence of responses from the sensor during the progressive blood flow obstruction, analyzing the sensor responses, determining blood pressure, developing an envelope having a lower limit band and upper limit band wherein the envelope is developed around the sequence of acquired sensor responses, determining when a sensor response crosses the upper or lower limit of the envelope. - View Dependent Claims (108, 109)
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110. A system comprising:
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a processor; a first sensor, configured to be placed proximate a biological entity, in communication with the processor; a memory storing instructions executable by the processor for acquiring a response from the first sensor, analyzing the sensor response, comparing the sensor response to a signal representing the electrical activity of the heart, and determining a condition of electromechanical disassociation when the signal represents electrical activity in the heart and the sensor response represents the absence of pumping action in the heart. - View Dependent Claims (111, 112, 113, 114, 115, 116, 117, 118, 119)
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Specification