Multi-purpose transducer for transcutaneous blood measurements
US4259963A · kind A · utility
Inventor
Key dates
| Filing date | Jul 3, 1979 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Jul 3, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1491
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A multi-purpose polarographic oxygen-concentration transducer of the transcutaneous-measurement type, a face of it being laid against the tissue of interest, is able to generate signals beyond those indicating mere total oxygen concentration, and can additionally generate signals indicating concentration of oxygen chemically bound to blood hemoglobin, as well as also indicating pulse rate and pulse waveform, blood flow rate through the capillary network of such tissue, the elastic behavior of the capillaries, and the flow rate of blood through such tissue exclusive of that flowing through the capillary network. The transducer is thermostatically temperature-controlled and emits light onto the tissue against which it is laid and detects the light received back by reflection and/or by transmission of such light into and out of the tissue against which the transducer is laid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.