Surgery – Truss – Pad
Patent
1981-10-02
1984-01-17
Cohen, Lee S.
Surgery
Truss
Pad
204415, A61B 500
Patent
active
044259182
ABSTRACT:
Disclosed herein is a retainer arrangement for applying a membrane to a physiological sensing unit for the transcutaneous determination of the magnitude of physiological quantitites, particularly for measuring the partial pressure of gases in blood or the like. The arrangement constitutes a preassembly of a membrane, with a clamping ring accommodating the membrane and having an annular recess receiving the rim of the membrane. The clamping ring has a lip in the form of an inwardly protruding annular edge for removably securing the clamping ring together with the membrane to the sensing unit by virtue of the lip resiliently snapping into a peripheral groove of the sensing unit, the lip defining the periphery of the annular recess. In accordance with the invention, an auxiliary retainer element, is provided for temporarily and removably assembling the membrane with the clamping ring prior to assembly with the sensing unit. The auxiliary retainer element includes a retainer ring fitted loosely into the annular recess of the clamping ring, to maintain the outer rim of the membrane within the annular recess.
REFERENCES:
patent: 4005700 (1977-02-01), Parker
patent: 4175028 (1979-11-01), Payton
patent: 4273134 (1981-06-01), Ricciardelli
patent: 4303076 (1981-12-01), Danek
Leist Helmut J.
Moll Hermann
Pomorin Karl-Heinz
Ullrich Georg J.
Cohen Lee S.
Hellige GmbH
Seldon Robert A.
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