Patents by Inventor Donald R. Greene

Donald R. Greene 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).

  • Extensible passive fixation mechanism for lead assembly of an implantable cardiac stimulator
    Patent number: 4913164
    Abstract: An implantable lead for a cardiac stimulator has an electrode at its distal end, and resilient, non-penetrating, tissue-contacting elements integral with the lead in the vicinity of the electrode. The resilient elements are movable from a first unextended position for ease of insertion or withdrawal of the lead through the vein of a patient to a second extended position for contacting tissue to retain the electrode in a selected location in the heart of the patient. A device operable along the lead serves to selectively move the resilient elements from the unextended to the extended position or vice versa.
    Type: Grant
    Filed: September 27, 1988
    Date of Patent: April 3, 1990
    Assignee: Intermedics, Inc.
    Inventors: Donald R. Greene, James I. Bradshaw