Method and apparatus for transmyocardial revascularization using a laser

Abstract From the Canadian patent

A surgical carbon dioxide laser is disclosed which includes a handpiece for directing a laser beam to a desired location. Mounted on the forward end of the handpiece is a hollow needle precisely aligned along the laser path. This permits the laser to be used in surgical applications where the needle perforates a portion of tissue to provide the laser beam direct access to distal tissue. The needle is mounted to the handpiece in a manner which provides for forward and lateral adjustment of the needle relative to the laser beam path which insures co-axiality between the laser beam and the needle lumen. This is crucial for the safe use of the laser. The needle is adjusted such that the focal …