Apparatus for measuring concentration of hemoglobin and method for the same
US5722398A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1995 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Nov 14, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1455
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for measuring a concentration of hemoglobin includes a light application device for applying light to a detection region containing a blood vessel present in a living body; an image capturing device for capturing an image of the detection region to which the light is applied; and an analyzer for analyzing the concentration of hemoglobin in blood flowing through the blood vessel by processing the captured image. The analyzer includes a light intensity detector for detecting a light intensity of a body tissue and a light intensity of blood using the captured image. It further includes a calculator for calculating the concentration of hemoglobin from a ratio of the light intensity of the body tissue relative to the light intensity of blood thus detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.