Aspect Medical Systems Named Medical Device Manufacturer of the Year by Medical Device and Diagnostic Industry Magazine.

NEWTON, Mass. -- Aspect Medical Systems (NASDAQ: ASPM), a global market leader in brain-monitoring systems, was named the small company Medical Device Manufacturer of the Year by Medical Device and Diagnostic Industry (MD&DI) magazine. The company is featured in MD&DI's November cover story that highlights Aspect's 18 year journey to introduce BIS monitoring to the market. According to the publication, Aspect was selected for the award based on a broad range of achievements, including the company's contributions to advancing patient care, technical product innovations, and established partnerships with leading patient-monitoring companies. The article credits the strategic vision of company management and the ability to persevere through setbacks as key contributors to the company's success.

"Receiving the Medical Device Manufacturer of the Year award is an honor that represents another milestone in an exciting year for Aspect," said Nassib Chamoun, president and chief executive officer of Aspect Medical Systems. "This award would not have been possible without Aspect's talented personnel, a shared belief in the value of our technology in improving the quality and safety of patient care, and a company-wide commitment to reaching our goals. I am extremely proud of what this organization has achieved."

Medical Device and Diagnostic Industry is the nation's leading magazine for manufacturers of medical devices and in vitro diagnostics. To read the full text of the article, visit the publication's Web site at www.devicelink.com/mddi/.

About Aspect Medical Systems, Inc.

Aspect Medical Systems, Inc. (NASDAQ: ASPM) is a global market leader in brain monitoring technology. Aspect's BIS technology directly measures the effects of anesthetics and sedatives on the brain. The technology has been used to assess nearly 10 million patients and has been the subject of approximately 1,700 published articles and abstracts. BIS technology is installed in approximately one third of all domestic operating rooms and is available in more than 160 countries. Aspect Medical Systems has OEM agreements with seven leading manufacturers of patient monitoring systems. For more information, visit Aspect's Web site at http://www.aspectmedical.com.

Safe Harbor Statement

Certain statements in this release are forward-looking and may involve risks and uncertainties. There are a number of important factors that could cause actual results to differ materially from those indicated by these forward-looking statements. These factors include a number of risks facing the Company's business. For example, the Company not be able to achieve widespread market acceptance of its BIS monitoring technology or to compete with new products or alternative techniques that may be developed by others, including third-party anesthesia monitoring products approved by the FDA, and also faces competitive and regulatory risks relating to its ability to successfully develop and introduce enhancements and new products. In addition, the Company may not successfully monitor the risk of awareness with BIS monitoring in all cases. Cases of awareness with recall during monitoring with the BIS system and significant product liability claims are among the factors that could limit market acceptance. There are additional factors that could cause Aspect's actual results to vary from its forward-looking statements, including without limitation those set forth under the heading "Factors Affecting Future Operating Results" in Aspect's Quarterly Report on Form 10-Q for the fiscal quarter ended October 2, 2004, as filed with the Securities and Exchange Commission. In addition, any forward-looking statements represent Aspect's views only as of the date of this press release and should not be relied upon as representing Aspect's views as of any subsequent date. While Aspect may elect to update forward-looking statements in the future, it specifically disclaims any obligation to do so, even if its expectations change. Therefore, you should not rely on these forward-looking statements as representing Aspect's views as of any date subsequent to the date of this press release.

BIS, the BIS logo and Bispectral Index are trademarks of Aspect Medical Systems, Inc. and are registered in the USA, EU and other countries. BISx, Power Link and BIS Ready are trademarks of Aspect Medical Systems, Inc. All other trademarks, service marks and company names are the property of their respective owners.