Irvine-based Masimo, a provider of medical devices for patient monitoring, raised $202M in its IPO on the Nasdaq Wednesday. The firm, which trades under the symbol MASI, jumped more than 18 percent in its debut yesterday. The IPO was underwritten by Piper Jaffray, Deutsche Bank Securities, Citigroup Global Markets, Cowen & Co., and Thomas Weisel Partners. Masimo's products include noninvasive sensors for pulse oximetry.