Patents by Inventor Hal Kirshner

Hal Kirshner 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).

  • Apparatus for holding and driving a surgical cutting device using stereotactic mammography guidance
    Patent number: 5830219
    Abstract: An apparatus for holding and driving a rotary cutting surgical instrument with a needle guiding stage of a stereotactic mammography biopsy system is disclosed. The system includes a rotary cutting surgical instrument having a housing with a mechanism for securing the housing to a needle guiding stage of the stereotactic mammography biopsy system. The apparatus further includes a position encoder and controller for determining the resistance experienced by the rotary cutting instrument and for controlling the rotation of the instrument in response to the resistance.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: November 3, 1998
    Assignee: Trex Medical Corporation
    Inventors: Richard R. Bird, Kenneth F. DeFrietas, Roman R. Janer, Hal Kirshner, Samson L. Pennatto