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US 5,077,476 AGranted
Instrument for non-invasive measurement of blood glucose
AssigneeFutrex, Inc.
InventorRobert D. Rosenthal
Life of this patent
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Abstract
Near-infrared quantitative analysis instruments non-invasively measure blood glucose by analyzing near-infrared energy following interactance with venous or arterial blood, or transmission through a blood containing body part. A replaceable cartridge stores data unique to an individual patient/user. The analysis instruments are accurate and readily lend themselves to at-home testing by diabetics.
Claims27
A near-infrared quantitative analysis instrument for non-invasive measurement of blood present in a body part of a subject, comprising:
- (a) introducing means including a near infrared energy source for introducing near-infrared energy into blood present in a body part of a subject;
- (b) detecting means for detecting near-infrared energy emerging from the body part;
- (c) positioning means for positioning both the near-infrared introducing means and the detecting means closely adjacent to the body part;
- (d) processing means for processing a first electrical signal produced by the detector means into a second signal indicative of the quantity of glucose present in the blood of the subject;
- (e) a housing means for housing said introducing means, said detecting means and said processing means;
- and
- (f) a replaceable cartridge means engaging said housing means comprising a memory means for storing data comprising said second signal.
4 more elements
Dependencies are inferred from the claim text.