Patents by Inventor A. Boyd Hansen

A. Boyd Hansen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Anticoagulant delivery means for aspiration wand
    Patent number: 4002170
    Abstract: An anticoagulant delivery device forming part of an aspiration wand for use in connection with autologous blood transfusion wherein an anticoagulant is delivered along essentially the entire internal periphery of the aspiration wand in the vicinity of the aspiration tip and intimately mixed with aspirated blood.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: January 11, 1977
    Assignee: Sorenson Research Co., Inc.
    Inventors: A. Boyd Hansen, Gordon S. Reynolds
  • Antiocoagulant metering device and method
    Patent number: 3964484
    Abstract: An aspiration wand assembly having an associated metering valve for metering liquid anticoagulant to blood aspirated by the wand. The metering valve includes a flexible diaphragm normally obstructing conduit which transmits anticoagulant from a remote source to the tip of the aspiration wand. An orifice communicates the diaphragm with the interior of the aspiration wand so that various negative pressures in the wand correspondingly draw the diaphragm into any one of a plurality of positions away from the obstructing position.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: June 22, 1976
    Assignee: Sorenson Research Co., Inc.
    Inventors: Gordon S. Reynolds, A. Boyd Hansen
  • Anticoagulant delivery device and method
    Patent number: 3955573
    Abstract: An anticoagulant delivery device forming part of an aspiration wand and method for use in connection with autologous blood transfusion wherein an anticoagulant is delivered to and intimately mixed with aspirated blood in the vicinity of the aspiration tip of the wand.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: May 11, 1976
    Assignee: Sorenson Research Co., Inc.
    Inventors: A. Boyd Hansen, Gordon S. Reynolds