Micrus Endovascular Announces Launch of Innovative DeltaPaq Microcoil System

Micrus Endovascular Corporation (Nasdaq:MEND) today announced the initiation of its launch of Cerecyte(R) and stretch resistant versions of its DeltaPaq(TM) microcoil system for the treatment of cerebral aneurysms. The novel DeltaPaq system is designed to achieve 10% to 20% greater intra-aneurysmal packing density than conventional microcoils.

“We are excited about the launch of the DeltaPaq microcoil, designed to enable physicians to achieve greater packing density, which we believe may result in improved outcomes,” commented John Kilcoyne, Chairman and CEO of Micrus Endovascular. “Greater packing density could reduce the rate of recanalization and, therefore, re-treatment. We believe the DeltaPaq microcoil system supplements our framing and finishing coils by materially improving our competitive position in the filling segment of the coil market.”

About Micrus Endovascular Corporation

Micrus develops, manufactures and markets implantable and disposable medical devices for use in the treatment of cerebral vascular diseases. Micrus products are used by interventional neuroradiologists, interventional neurologists and neurosurgeons to treat both cerebral aneurysms responsible for hemorrhagic stroke and intracranial atherosclerosis, which may lead to ischemic stroke. Hemorrhagic and ischemic stroke are both significant causes of death and disability worldwide. The Micrus product line enables physicians to gain access to the brain in a minimally invasive manner through the vessels of the circulatory system. Micrus’ proprietary, three-dimensional microcoils automatically deploy within the aneurysm, forming a scaffold that conforms to a wide diversity of aneurysm shapes and sizes. Micrus also sells accessory devices and products used in conjunction with its microcoils. For more information, visit www.micruscorp.com.

Forward-Looking Statements

Micrus, from time to time, may discuss forward-looking information, including estimated fiscal 2009 revenues. Except for the historical information contained in this release, all forward-looking statements are predictions by the Company’s management and are subject to various risks and uncertainties that may cause results to differ from management’s current expectations. Such factors include the risk of inconclusive or unfavorable clinical trial results, the Company’s ability to obtain, and the timing of, regulatory approvals and clearances for its products, product enhancements or future products, and other risks affecting the Company, including the Company’s involvement in patent litigation with Boston Scientific Corporation, the Company’s limited operating history and history of significant operating losses, fluctuations in quarterly operating results, which are difficult to predict, the Company’s dependence on developing new products or product enhancements, challenges associated with complying with applicable state, federal and international regulations related to sales of medical devices and governing Micrus’ relationships with physicians and other consultants, the Company’s ability to compete with large, well-established medical device manufacturers with significant resources and other risks as detailed from time to time in risk factors and other disclosures in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2008, and other filings with the Securities and Exchange Commission. All forward-looking statements in this release represent the Company’s judgment as of the date of this release. The Company disclaims, however, any intention or obligation to update forward-looking statements.