04200110 is referenced by 288 patents and cites 10 patents.

A fiber optic pH probe suitable to be implanted in tissue for physiological studies is disclosed. The probe includes an ion permeable membrane envelope which encloses the ends of a pair of optical fibers. A pH sensitive dye indicator composition is present within the envelope. The probe operates on the concept of optically detecting the change in color of a pH sensitive dye.

Title
Fiber optic pH probe
Application Number
5/855384
Publication Number
4200110
Application Date
November 28, 1977
Publication Date
April 29, 1980
Inventor
Seth R Goldstein
Bethesda
MD, US
John I Peterson
Falls Church
VA, US
Agent
Holman & Stern
Assignee
United States of America
DC, US
IPC
G01N 21/00
A61B 5/00
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