Surgery – Blood drawn and replaced or treated and returned to body
Patent
1993-03-24
1995-10-17
Green, Randall L.
Surgery
Blood drawn and replaced or treated and returned to body
73862634, 128DIG13, 604 29, 604 31, A61M 3700
Patent
active
054585660
ABSTRACT:
A volume sensor is described for automating an extracorporeal system used for the recovery and concentration of salvaged blood. The system includes a disposable plastic reservoir in which blood is collected from the surgical site and stored for processing. Volume is sensed in one embodiment by a strain gage device which is sensitive to vertical forces. In another embodiment volume is sensed by measuring the transit time of an ultrasonic pulse-echo signal generated by piezoelectric transducer.
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Anderson Frank J.
Comeau Norbert J.
Herrig Russell L.
Plante Joseph R.
Volpini Paul M.
Clarke Rob
Green Randall L.
Haemonetics, Inc.
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