Xconomy -- Calypso Medical Technologies, the Seattle-based maker of a system to pinpoint radiation therapy for prostate cancer patients, has taken in another $6.4 million through an offering of debt, options, and other securities, according to a regulatory filing. The company last raised $50 million in venture capital in September 2009. Xconomy last wrote about Calypso in August, when CEO Eric Meier left the company, about 15 percent of the workforce was cut, and its U.S. sales force was reorganized.
