Patents by Inventor John H. Hajjar

John H. Hajjar 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).

  • Laser therapy system and method of cutting and vaporizing a tissue body
    Patent number: 6126653
    Abstract: A laser therapy system and method of cutting and vaporizing a tissue body which includes a fiber optic which is inserted into the lumen of a catheter and operable between an extended position wherein a distal end portion of the fiber optic is positioned to cut and vaporize a tissue body and a retracted position wherein the fiber optic is received within the lumen of the catheter. The catheter incorporates at a distal end portion a means for removing attached tissue fragments and the like from the distal end portion of the fiber optic such that tissue fragments stuck to the distal end portion of the fiber optic can be removed while the catheter and fiber remain at the treatment site. This improved system eliminates the need to completely remove the fiber optic during the cutting and vaporization procedure in order to remove the fragments and debris.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: October 3, 2000
    Inventor: John H. Hajjar
  • Laser therapy system
    Patent number: 5456681
    Abstract: A laser therapy system and method of cutting and vaporizing a tissue body which includes a fiber optic which is inserted into the lumen of a catheter and operable between an extended position wherein a distal end portion of the fiber optic is positioned to cut and vaporize a tissue body and a retracted position wherein the fiber optic is received within the lumen of the catheter. The catheter incorporates at a distal end portion a means for removing attached tissue fragments and the like from the distal end portion of the fiber optic such that tissue fragments stuck to the distal end portion of the fiber optic can be removed while the catheter and fiber remain at the treatment site. This improved system eliminates the need to completely remove the fiber optic during the cutting and vaporization procedure in order to remove the fragments and debris.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: October 10, 1995
    Inventor: John H. Hajjar