Membrane support structure for electrochemical sensing probe
First Claim
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1. An electrolyte housing for an electrochemical sensing probe that has a membrane held against an electrode support, whereby the improvement comprises:
- a retaining member having a protruding annular section which uniformly presses the membrane against the electrode support;
said electrode support having a surface roughened to a given depth; and
a lateral channel in the electrode support'"'"'s end surface that is substantially deeper than the roughened surface, which channel extends laterally across the protruding annular section to prevent the blocking seal to occur between the protruding annular section and the membrane.
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Abstract
A probe for monitoring gas concentration, such as oxygen, in an anesthesia respiratory therapy circuit which includes an improved membrane support structure. This structure includes an electrode supporting post having a roughened end and also interconnecting grooves and channels to insure electrolyte contact with the electrode. Also, there is a retaining member having an upstanding annular rib which uniformly presses the membrane against the electrode support.
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Citations
6 Claims
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1. An electrolyte housing for an electrochemical sensing probe that has a membrane held against an electrode support, whereby the improvement comprises:
- a retaining member having a protruding annular section which uniformly presses the membrane against the electrode support;
said electrode support having a surface roughened to a given depth; and
a lateral channel in the electrode support'"'"'s end surface that is substantially deeper than the roughened surface, which channel extends laterally across the protruding annular section to prevent the blocking seal to occur between the protruding annular section and the membrane. - View Dependent Claims (2, 3, 4, 5, 6)
- a retaining member having a protruding annular section which uniformly presses the membrane against the electrode support;
Specification