A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
73/101
A61B 5/02 (2006.01) A61B 5/022 (2006.01) A61B 7/04 (2006.01)
Patent
CA 1336651
A blood pressure cuff having an internal acoustic pickup cup. In one embodiment, the cup communicates with the interior of the blood pressure cuff bladder through an aper- ture that is sufficiently large to allow pressure equaliza- tion between the interior of the bladder and the cup and sufficiently small to prevent Korotkoff sounds from being coupled from the cup to the interior of the bladder. A single pneumatic tube extends from the cup and through the wall of the bladder to a first enclosure that is coupled to a second enclosure through a conduit. The first enclosure contains a microphone for converting the acoustic signals picked up by the cup into a corresponding electrical signal. The second enclosure contains a pressure transducer for providing an electrical signal indicative of the pressure in the bladder. In a second embodiment, the cup and bladder are isolated from each other and separate tubes extend from the bladder and the cup to separate enclosures. The enclosure communicating through one of the conduits with the cup contains a microphone, while the enclosure communicating through the other tube with the bladder contains a pressure transducer.
593418
Oyen Wiggs Green & Mutala Llp
Spacelabs Medical Inc.
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