Patents Assigned to Haemonetics, Inc.
  • Reservoir volume sensing systems for autologous blood recovery
    Patent number: 5458566
    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.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: October 17, 1995
    Assignee: Haemonetics, Inc.
    Inventors: Russell L. Herrig, Joseph R. Plante, Frank J. Anderson, Paul M. Volpini, Norbert J. Comeau