Non-invasive measurement of blood glucose using instruments that have less precise detection capability
US6064896A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | May 6, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1455
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus are disclosed for improving an accuracy characteristic of a quantitative measurement instrument for measuring a blood analyte concentration by using lower precision sensor devices. One embodiment of the method includes calculating a correction factor based on an elapsed time from a last meal and a substantially typical rise and fall pattern of blood analyte concentrations in the bloodstream. The correction factor is part of a regression analysis equation employed by the blood analyte measurement instrument. A second embodiment includes a method whereby a series of indicator variables are allocated based on the elapsed time from a last meal, and uses the indicator variables in a regression analysis equation. An apparatus having an introducer means for introducing an energy into blood present in a body part of a subject, a detector for detecting the energy emerging from the body part, with the detector producing an electrical signal indicative of the emerging energy, an input element for entering a time from a last meal of the subject, a storage element for storing a regression equation and a correction factor, and a processor for using the regression equation …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.