Patents by Inventor Joseph B. de Groot

Joseph B. de Groot 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 performing a biopsy
    Patent number: 4893635
    Abstract: A cell or tissue retrieving instrument is slidably mounted within the needle of a conventional "Skinny Needle" and is connected to the needle syringe piston. In use, the needle with the instrument enclosed therein is inserted inwardly into the patient's organ. The instrument is held fixed and the needle is moved outwardly to expose the instrument within the organ. The instrument retrieves cell or tissue from the organ while being pulled into the needle and the needle with the enclosed instrument is removed from the patient.A device is also disclosed for manipulating the "Skinny Needle" and tissue retrieving instrument in the method of performing the biopsy.
    Type: Grant
    Filed: June 1, 1988
    Date of Patent: January 16, 1990
    Inventors: William J. de Groot, Theodore J. de Groot, Joseph B. de Groot
  • Apparatus and method for performing a biopsy and a device for manipulating same
    Patent number: 4766907
    Abstract: A cell or tissue retrieving instrument is slidably mounted within the needle of a conventional "Skinny Needle" and is connected to the needle syringe piston. In use, the needle with the instrument enclosed therein is inserted inwardly into the patient's organ. The instrument is held fixed and the needle is moved outwardly to expose the instrument within the organ. The instrument retrieves cell or tissue from the organ while being pulled into the needle and the needle with the enclosed instrument is removed from the patient.A device is also disclosed for manipulating the "Skinny Needle" and tissue retrieving instrument in the method of performing the biopsy.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: August 30, 1988
    Inventors: William J. de Groot, Theodore J. de Groot, Joseph B. de Groot