Measuring and testing – With fluid pressure – Leakage
Reexamination Certificate
2006-07-18
2006-07-18
Cygan, Michael (Department: 2855)
Measuring and testing
With fluid pressure
Leakage
C601S149000
Reexamination Certificate
active
07076993
ABSTRACT:
A method for detecting leakage in a pressurised medical appliance prior to normal operation, the system including an air compressor and an inflatable bag or bladder coupled to the air compressor through the intermediary of a fill valve allowing air to pass to the bladder and a vent valve for venting the system, the fill valve and the vent valve being selectively operable during said normal operation to deliver cyclical pulses of air to inflate and deflate the bladder, the detection method comprising a) opening the fill valve to vent the system to atmospheric pressure, b) closing the vent valve, c) pressurising the system by means of the air compressor to a pre-determined threshold value, d) monitoring the pressure gradient or rise over a period of time to said threshold value and e) comparing the pressure gradient over said period of time or at intervals of time within said period of time with a pre-specified pressure gradient indicative of system integrity whereby to determine the presence or otherwise of air leakage in the system.
REFERENCES:
patent: 3885554 (1975-05-01), Rockwell, Jr.
patent: 4205551 (1980-06-01), Clifford et al.
patent: 4469099 (1984-09-01), McEwen
patent: 4691738 (1987-09-01), McCune
patent: 5307791 (1994-05-01), Senoue et al.
patent: 5935146 (1999-08-01), McEwen et al.
patent: 5951502 (1999-09-01), Peeler et al.
patent: 6051016 (2000-04-01), Mesaros et al.
patent: 6475228 (2002-11-01), Mesaros et al.
patent: 6605103 (2003-08-01), Hovanes et al.
patent: 6029 (1979-12-01), None
patent: 0 992 230 (2000-04-01), None
patent: 2 270 472 (1994-03-01), None
patent: WO 93/12708 (1993-07-01), None
patent: WO 96/06569 (1996-03-01), None
Birch & Stewart Kolasch & Birch, LLP
Cygan Michael
Novamedix Distribution Limited
LandOfFree
Leakage detection method for a pressurised medical appliance does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Leakage detection method for a pressurised medical appliance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Leakage detection method for a pressurised medical appliance will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3597193