Patents by Inventor Dan Neu

Dan Neu 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).

  • Cryosurgical instrument and system and method of cryosurgery
    Patent number: 5674218
    Abstract: An improved cryosurgical system includes means for cooling the cryoprobe instrument to temperatures below the normal boiling point of liquid nitrogen as well as means for recovering the sub-cooled liquid coolant. A unique cryoprobe instrument of simplified construction uses an active vacuum for thermal insulation. Means are provided for controllably adjusting the length of the freezing zone of the cryoprobe to allow the freezing zone to be adjusted for different sizes and shapes of tumors which may be "observed" before surgery by ultrasound imaging. Multiple, disposable cryoprobe instruments can be individually controlled for both operating temperature and freeze zone length. A preferred refrigeration system for sub-cooling liquid nitrogen refrigerant or other cryogenic liquid refrigerant is based on the principles of evaporative cooling.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: October 7, 1997
    Assignee: Cryomedical Sciences, Inc.
    Inventors: Boris Rubinsky, Gary Onik, J. J. Finkelstein, Dan Neu, Steve Jones
  • Cryosurgical system for destroying tumors by freezing
    Patent number: 5334181
    Abstract: An improved cryosurgical system includes means for cooling the cryoprobe instrument to temperatures below the normal boiling point of liquid nitrogen as well as means for recovering the sub-cooled liquid coolant. A unique cryoprobe instrument of simplified construction uses an active vacuum for thermal insulation. Means are provided for controllably adjusting the length of the freezing zone of the cryoprobe to allow the freezing zone to be adjusted for different sizes and shapes of tumors which may be "observed" before surgery by ultrasound imaging. Multiple, disposable cryoprobe instruments can be individually controlled for both operating temperature and freeze zone length. A preferred refrigeration system for sub-cooling liquid nitrogen refrigerant or other cryogenic liquid refrigerant is based on the principles of evaporative cooling.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: August 2, 1994
    Assignee: Cryomedical Sciences, Inc.
    Inventors: Boris Rubinsky, Gary Onik, J. J. Finkelstein, Dan Neu, Steve Jones