Patents Assigned to Northstar Research Institute, Ltd.
  • Patent number: 4979509
    Abstract: A continuous process for monitoring blood glucose level includes the steps of segregating a clear liquid component of blood from the protein and cells of the blood, wherein the clear liquid component includes the glucose to be monitored; continuously passing the clear liquid in a predetermined path between a light-emitting and a light-detecting device; detecting an optical property of the clear liquid component of the blood and employing the optical property to determine the glucose level in the blood. The invention also relates to the system for carrying out the continuous glucose monitoring process, and to a device for automatically controlling the pressure level in the system as a function of the breathing pattern of a patient in which the system is implanted.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: December 25, 1990
    Assignee: Northstar Research Institute, Ltd.
    Inventor: Said I. Hakky
  • Patent number: 4890621
    Abstract: A continuous process for monitoring blood glucose level includes the steps of segregating a clear liquid component of blood from the protein and cells of the blood, wherein the clear liquid component includes the glucose to be monitored; continuously passing the clear liquid in a predetermined path between a light-emitting and a light-detecting device; detecting an optical property of the clear liquid component of the blood and employing the optical property to determine the glucose level in the blood. The invention also relates to the system for carrying out the continuous glucose monitoring process, and to a device for automatically controlling the pressure level in the system as a function of the breathing pattern of a patient in which the system is implanted.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: January 2, 1990
    Assignee: Northstar Research Institute, Ltd.
    Inventor: Said I. Hakky
  • Patent number: 4773423
    Abstract: Apparatus and method for measuring blood loss by collecting a blood sample from a patient prior to a surgical procedure, measuring the level of hemoglobin in that blood sample, collecting blood and pathological fluid removed from the patient during the surgical procedure; measuring the level of hemoglobin in the blood collected from the surgical procedure; comparing the level of hemoglobin in the blood collected prior to the surgical procedure with the level of hemoglobin in the blood after the surgical procedure and employing that comparison to determine the volume of blood lost during the surgical procedure.
    Type: Grant
    Filed: April 17, 1987
    Date of Patent: September 27, 1988
    Assignee: Northstar Research Institute, Ltd.
    Inventor: Said I. Hakky