Reference electrode catheter
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United States of America Patent
Stats
-
Feb 21, 1984
Grant Date -
N/A
app pub date -
Nov 27, 1981
filing date -
Nov 27, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A reference electrode catheter for use for in vivo measurement of body fluids. The catheter includes a small diameter cylindrical tube having a reference electrode assembly disposed on the distal end thereof. The reference electrode assembly includes a hollow cylindrical housing and an electrode element positioned within the housing mounted on and supported by a retainer member. The electrode element is connected to an electrical conductor which extends out of the housing and through the passageway of the tubing to the proximal end of the tubing. An electrolytic material, such as gelled Ringer's solution, is disposed within the housing, and a membrane formed of hydrogel is positioned across an aperture in the housing so as to form an ion diffusion barrier between the body fluids to be measured and the electrolytic material within the housing.
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