Cardiovascular Systems Inc. announced that it has forged a merger agreement under which it will merge with Replidyne. Under the terms of the agreement, Replidyne will issue new shares of its common stock to CSI shareholders whereby former CSI shareholders are expected to own 83 percent of the combined company, and Replidyne shareholders are expected to own 17 percent of the combined company. Replidyne was a 2006 Fierce 15. Release