EXHIBIT 99.1 May 17, 2001 Securities and Exchange Commission 450 Fifth St., NW Washington DC 20549 Re: Trimedyne, Inc. Dear Sir/Madam: On January 29, 2001 we filed our Proxy Statement. Such Proxy has not been mailed to shareholders. We request that this Proxy Statement be withdrawn. Thank you. Very Truly Yours, /s/ SHANE H. TRAVELLER - ---------------------- Shane H. Traveller Chief Financial Officer 1