Sensing device
First Claim
1. An optical sensing device comprising a thin biocompatible tube having a tube wall and a longitudinal axis, said tube being insertable into human or animal tissue, wherein said biocompatible tube operates as a single light guide and has several areas axially displaced which contain different optically excitable and readable indicating substances, and further comprising means for exciting and reading said indicating substances.
1 Assignment
0 Petitions
Accused Products
Abstract
In order to simultaneously determine the concentrations of different analytes in several places in a tissue by means of a thin, biocompatible tube or cannula which is inserted into the tissue, the tube is provided with several areas along its length which contain either identical or different optically excitable and readable, preferably luminescence-optical, indicating substances for measuring the local distribution of one parameter, such as O2 concentration or O2 partial pressure, or for simultaneous measurement of at least two different parameters, e.g., pO2, pCO2 or pH.
-
Citations
16 Claims
- 1. An optical sensing device comprising a thin biocompatible tube having a tube wall and a longitudinal axis, said tube being insertable into human or animal tissue, wherein said biocompatible tube operates as a single light guide and has several areas axially displaced which contain different optically excitable and readable indicating substances, and further comprising means for exciting and reading said indicating substances.
-
2. An optical sensing device comprising a thin biocompatible tube having a tube wall and a longitudinal axis, said tube being insertable into human or animal tissue, wherein said tube is provided with a liquid, gel-like or solid tube filling, wherein the refractive index of said tube wall is lower than the refractive index of said tube filling, so that said tube filling operates as a single light guide and wherein said tube has several areas axially displaced which contain different, optically excitable and readable indicating substances, and further comprising means for exciting and reading said indicating substances.
Specification