Patent · US Expired

Device and evaluation procedure for the depth-selective, noninvasive detection of the blood flow and/or intra and/or extra-corporeally flowing liquids in biological tissue

US6045511A · kind A · utility

275Cited by

5References

20Claims

0Family size

Assignee

Dipl-Ing. Lutz Ott · DE

Inventors

Lutz Ott · Reiskirchen, DE
Rudolf Steiner · Bassersdorf, CH
Paul Jurgen Hulser · Leutkirch im Allgäu, DE

Key dates

Filing date	Apr 21, 1997
Grant date	Apr 4, 2000
Priority date	—
Expiry date	Apr 21, 2017

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2562/046
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A device and an evaluation procedure for the depth-selective, non-invasive detection of the blood flow and/or intra- and/or extracorporeally flowing liquids in biological tissue are described whereby photons of a coherent, monochromatic source of light are entered into the tissue through a first area, photons reemerging from the tissue at different distances from this first area are detected with respect to their frequency and number, or intensity, and, from this information, i.e. frequency and/or number, or intensity, and/or reemerging location, conclusions about the relative modification of the flow amount and/or speed and/or location of the blood flow and/or the intra- and/or extracorporeally flowing liquids in the tissue are drawn with the help of an evaluation program or algorithm.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.