Gas separation: apparatus – Apparatus for selective diffusion of gases – Plural separate barriers
Reexamination Certificate
2007-02-13
2007-02-13
Lawrence, Frank M. (Department: 1724)
Gas separation: apparatus
Apparatus for selective diffusion of gases
Plural separate barriers
C055S511000
Reexamination Certificate
active
10804147
ABSTRACT:
A device for protecting medical apparatus from contamination by infectious agents comprises a containment body having an inlet destined to be set in fluid communication with an extracorporeal circuit of blood, and an outlet destined to be connected to a fluid line operatively connected to a pressure gauge of a medical apparatus. The inlet is in gas communication with the outlet across an internal cavity of the containment body. Two hydrophobic membranes are predisposed in the containment body between the inlet and the outlet. The membranes each define an anticontamination barrier which is gas-permeable. The device transmits the pressure of the extracorporeal circuit to the pressure gauge, with no relevant loss of head, while at the same time protecting, with a high degree of security, the medical apparatus from risks of contamination by pathogens originating in the extracorporeal circuit.
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International Preliminary Report on Patentability for International Application No. PCT/IB2004/000763.
International Search Report for International Application No. PCT/IB2004/000763.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Gambro Lundia AB
Lawrence Frank M.
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