Alan S Kujawski

US Patent:

20020107510, Aug 8, 2002

Filed:

Feb 5, 2001

Appl. No.:

09/777915

Inventors:

Robert Andrews - Norfolk MA, US
Lawrence Brodsky - Tolland CT, US
Richard Yeomans - Medway MA, US
Italo Desantis - Medway MA, US
Roger Dowd - Franklin MA, US
Alan Kujawski - Webster MA, US
Richard Morrell - Milford MA, US
Charles Negus - Taunton MA, US
Robert Rudko - Holliston MA, US

International Classification:

A61B018/18

US Classification:

606/010000, 606/011000, 372/009000, 372/015000, 372/029013

Abstract:

Cardiac laser surgery apparatus including a COslab laser, and a laser delivery system for delivering laser pulses from the laser to a patient's heart. Also isclosed are mirror adjustment devices for remotely adjusting mirrors sealed inside a laser housing; an RF power supply used to both preionize the laser gas, and to fire the laser by providing RF voltage pulses of longer duration than the preionizing RF voltage pulses; attaching laser optics to an integral fin along extruded laser housing; optical elements receiving a rectangular laser beam and converting it to a square laser beam of the desired dimensions; nonconductive spacers each connecting one electrode to the other in the laser chamber; barbed inserts in the electrodes that connect inductors to the electrodes; a plurality of resilient contact elements extending along a bottom of an electrode and supported on an internal ledge structure of the housing to provide good electrical connection between the electrode and the housing; isolation mounts between the housing and a frame; an air source including a compressor and an air filter, and a tube connected to the laser delivery system to deliver purge air from the source to the hand piece to clear smoke from the inside of the hand piece; and an upwardly extending lip around an output window at the bottom of the laser housing to limit collection of particles on the window.