• American Medical Alert (Oceanside, New York) reports the promotions of Frederic Siegel to executive VP, and Randi Baldwin to senior VP, marketing and development. Siegel joined the company in 1994 as sales executive, and Baldwin joined in 1999 as director of marketing. American Medical Alert provides support services to the healthcare community.

• Lloyd Diamond has joined Avantis Medical Systems (Sunnyvale, California) as VP, marketing and sales. Avantis Medical Systems makes catheter-based endoscopic devices.

• Jan Keltjens was named president/CEO of CryoCath Technologies (Montreal). CryoCath is a medical technology company that makes cryotherapy products to treat cardiovascular disease.

• M.S. Koly has resigned as chairman of the board of directors of Delcath Systems (Stamford, Connecticut). The board will discuss the board vacancy and the appointment of a new chairman at its next scheduled meeting on Feb. 1, 2007. Delcath Systems is a developer of isolated perfusion technology for organ or region-specific delivery of therapeutic agents.

Dean Linden was named investor relations director of Inviro Medical Devices (Atlanta). Prior to joining Inviro, Linden served in a similar role for ID Biomedical. Inviro makes safe medication delivery systems.