Magneto-pneumatic intermittent suction device
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United States of America Patent
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Nov 30, 1993
Grant Date -
N/A
app pub date -
Dec 22, 1992
filing date -
Dec 22, 1992
priority date (Note) -
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Abstract
An intermittent suction device for removing fluids from a patient where the duty cycle between the OFF and ON cycles is controlled by a magnetically susceptible diaphragm that switches back and forth between first and second positions, representing ON and OFF positions, by controlling the differential pressure across the diaphragm. The diaphragm is biased toward it first position by a permanent magnet that acts to attract the flexible diaphragm. The device has few moving parts and its duty cycle and overall cycle times are easily adjusted by the user.
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