Patents by Inventor Engstrom Tomas

Engstrom Tomas 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).

  • Miniaturized pressure sensor having means for protection of diaphragm
    Patent number: 5085223
    Abstract: A miniaturized transducer for in vivo measurements of physiological pressure has a transducer unit and an inner tube with a wall opening. A diaphragm covers the wall opening. Distinguishing for the invention is that the diaphragm is protected by an outer tube arranged outside the inner tube, and having a wall opening situated radially opposite the wall opening of the inner tube. An end closure closes off the distal end of the tube and a seal seals the outer tube against the inner tube. The lumen of the inner tube is in communication with the atmospheric pressure.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: February 4, 1992
    Assignee: Radi Medical Systems AB
    Inventors: Tenerz Lars, Hok Bertil, Lonc Roman, Hammarstrom Ola, Engstrom Tomas