Concentric Medical Launches Next Generation Family of Neurovascular Retrievers

Monday, July 28, 2008 General News
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MOUNTAIN VIEW, Calif., July 28 Concentric Medical, Inc.,the global leader in devices for clot removal in ischemic stroke patients,today announced the U.S. launch of its "V" series of Merci Retrievers. Thesenew Retrievers, available in multiple configurations and sizes to matchpatient anatomy, join Concentric Medical's existing Merci Retrievers alreadyon the market, and provide physicians with additional options for restoringblood flow in patients who have suffered ischemic strokes.

The V series Retrievers have been designed to be the most efficient MerciRetrievers yet and are the culmination of Concentric Medical's many years ofexperience providing neurovascular retrievers for ischemic stroke patients.The distal end of the latest Retriever is tightly coiled, which resistsstretching and assists in dislodging clots. The proximal end of the V seriesRetrievers is more loosely coiled, which facilitates wrapping and holding adislodged clot. Similar to Concentric Medical's L family of Retrievers, the Vseries of Merci Retrievers incorporate filaments that provide an additionalmechanism for securing blood clots during retrieval from the brain. The Vseries of Merci Retrievers will be available in diameters of 2.0, 2.5 and 3.0millimeters.

"The Merci Retrieval System(TM) is the most widely used clot retrievalsystem for ischemic stroke, and we continue to incorporate the knowledgegained from our experience, as well as input from many clinicians, intoimproved devices," said Maria Sainz, President and CEO of Concentric Medical."These next generation Retrievers are further evidence of our leadership inbringing exciting and new life-saving options to stroke patients."

The Merci Retriever(R) is made with a flexible, shaped Nitinol wire thatallows delivery of the Retriever in linear form using standard catheterizationtechniques. A neurointerventionalist makes a small puncture in the groin tointroduce the Merci Retriever into an artery leading to the brain. The MerciRetriever returns to its original shape when deployed in and around the bloodclot in the brain.

About Concentric Medical

Concentric Medical is located in Mountain View, California, and wasfounded in August 1999. The company manufactures and markets the MerciRetrieval System, which is a minimally invasive device that is delivered by aneurointerventionalist into the brain to restore blood flow by engaging,capturing and removing blood clots that cause ischemic stroke. The MerciRetrieval System is available in over 250 leading stroke centers around theworld, and has been the subject of two successful clinical trials, MERCI andMulti MERCI. Concentric Medical estimates that over 8,000 patients have beentreated with its devices. For more information about Concentric Medical,please visit

Media Contact: Andrew Gordon

1 650-810-1701

SOURCE Concentric Medical, Inc.

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