Company Press Release

CardioMEMS, Inc. Announces First Patient Implant of Wireless Pressure Sensor for Heart Failure Monitoring in the United States

Atlanta – December 21, 2006. CardioMEMS, Inc. today announced that its wireless pressure sensor for heart failure (HF) monitoring was successfully implanted in two patients at Oklahoma Heart Hospital, Oklahoma City, Oklahoma under the direction of Philip Adamson, MD, Director of the Heart Failure Institute. The wireless HF sensor is a proprietary miniature device developed by CardioMEMS which is delivered to the patient’s pulmonary artery using a simple, catheter based procedure. The pulmonary artery pressure is then measured and displayed using the CardioMEMS proprietary electronic monitoring system.

Following the procedure, measurements of the patients’ pulmonary artery pressure and cardiac output were taken and the pressure data was immediately transmitted wirelessly to a secure database and became available for review on the CardioMEMS proprietary website.  In addition, the pressure waveform can be automatically sent and displayed on a PDA for remote viewing. 

According to Dr. Adamson “I was impressed by the ease of implantation of the sensor and use of the system.  Heart failure is the primary cause of hospitalization in the US and I am hopeful that the information derived from the CardioMEMS system can help reduce the number of hospitalizations and improve the quality of life of these patients.”

This is the first implant in the CardioMEMS US feasibility study for which Dr. Adamson is the co-Principal Investigator along with William Abraham, MD, Director of the Division of Cardiovascular Medicine at The Ohio State University Medical Center.  It follows the recent expansion of the clinical trials being performed outside the United States which includes Dante Pazzanese Hospital in Sao Paolo, Brazil under the leadership of Alex Abizaid, MD and the Cardiovascular Center Frankfurt, Sankt Katharinen under the direction of Horst Sievert, MD.

“We believe that this is the first wireless sensor implant for heart failure in the United States,” commented Jay Yadav, MD, Chairman and CEO of CardioMEMS, Inc. “We are very pleased to collaborate with Dr. Adamson and the Oklahoma Heart Hospital in the initiation of the US study of this transformational technology. Over the next several weeks, we expect to rapidly expand the number of hospitals that are part of the feasibility trial. This data will be used to support the CardioMEMS larger scale pivotal trial in 2007 and to support our CE mark application.”

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About CardioMEMS, Inc.

CardioMEMS is a medical device company that has developed and is commercializing a proprietary wireless sensing and communication technology for the human body. The CardioMEMS technology platform is designed to improve the management of severe chronic cardiovascular diseases such as aneurysms, heart failure, and hypertension. The CardioMEMS miniature wireless sensors can be implanted using minimally-invasive techniques and transmit cardiac output, blood pressure and heart rate data which are critical to the management of patients.

CardioMEMS, Inc. is located in Atlanta, GA and is privately held. More information about CardioMEMS, Inc. can be found at www.cardiomems.com

Contact: Bud Ingalls, CFO, 404-920-6700

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Statements made in this press release that look forward in time or that express beliefs, expectations or hopes regarding future occurrences or anticipated outcomes or benefits are forward-looking statements. A number of risks and uncertainties such as risks associated with product development and commercialization efforts, results of clinical trials, ultimate clinical outcome and benefit of the Company’s products to patients, market and physician acceptance of the products, intellectual property protection,and competitive offerings could cause actual events to adversely differ from the expectations indicated in these forward looking statements.

CardioMEMS, CardioMEMS logos, and EndoSure are trademarks of CardioMEMS, Inc.

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