PLC Plc Systems,

On Wednesday, July 27, 2005 before the market opens, PLC Systems Inc. (AMEX: PLC) expects to release to the news wire its results for the quarter ended June 30, 2005. The company will host a conference call to discuss the results at 11:00 a.m. ET on July 27. The call may be joined via telephone by dialing (888) 396-2369 or (617) 847-8710 (for international participants) at least 5 minutes prior to the start of the call. The conference ID code is: 87288014. Please note that a live webcast of the conference call will be available on the PLC Web site - www.plcmed.com. For 72 hours following the call, an audio replay can be accessed by dialing (888) 286-8010 or (617) 801-6888 (for international participants) and using passcode 66116924. Also, the call will be archived on the Web site listed above. About PLC PLC Systems is a medical technology company specializing in innovative technologies for the cardiac and vascular markets. Currently, the company is focused on two unique cardiac laser therapies. Headquartered in Franklin, Mass., PLC pioneered the CO2 Heart Laser System that cardiac surgeons use to perform CO2 transmyocardial revascularization (TMR) to alleviate symptoms of severe angina. Edwards Lifesciences (NYSE:EW) markets and distributes PLC's patent protected CO2 Heart Lasers. Additional company information can be found at www.plcmed.com.