A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/00 (2006.01) A61B 5/0215 (2006.01) G01L 9/06 (2006.01) A61B 17/00 (2006.01)
Patent
CA 2159854
An interface circuit for interfacing a semiconductor transducer sensor to a patient vital signs monitor is disclosed. In one embodiment, the interface circuit includes a power supply circuit that receives an excitation power signal generated by the patient monitor, and derives therefrom unregulated and regulated supply voltages for use by the electrical components on the interface circuit. Also generated by the power supply circuit is an appropriate sensor excitation signal for the semiconductor transducer. In another embodiment, the interface circuit further includes receiving circuitry for receiving a sensor output signal generated by the transducer sensor. A scaling circuit then scales that signal into a parameter signal that is proportional to the physiological condition detected by the sensor, and that is also proportional to the excitation power signal generated by the patient monitor. If necessary, the interface circuit further includes isolation circuitry, for electrically isolating the transducer sensor from the patient monitor.
Cette invention concerne un circuit d'interfaçage d'un capteur-transducteur à semiconducteur avec un moniteur de signes vitaux. Dans une variante, le circuit d'interfaçage comprend un circuit d'alimentation, qui reçoit un signal d'excitation généré par le moniteur et qui en tire des tensions d'alimentation régulées et non régulées à être transmises aux composants électriques de l'interface. Ce circuit d'alimentation produit également un signal d'excitation approprié du capteur-transducteur à semiconducteur. Dans une autre variante, le circuit d'interfaçage comprend en outre un circuit de réception des signaux du capteur-transducteur. Un circuit de comptage transforme ces signaux en signal paramétré proportionnel à l'état physiologique détecté et au signal d'excitation généré par le moniteur. Au besoin, le circuit d'interfaçage comprend en outre un circuit d'isolement électrique entre le capteur-transducteur et le moniteur.
Altman Gary
Raynes John W.
Becton Dickinson And Company
Gowling Lafleur Henderson Llp
LandOfFree
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