AntriCure, Inc.

[Guest guest]

April 20, 2005

AtriCure, Inc. Files Registration Statement for Initial

Public Offering

WEST CHESTER, Ohio--(BUSINESS WIRE)--April 20,

2005--AtriCure, Inc. announced today that it has filed a registration statement

relating to the proposed initial public offering of its common stock with the

U.S. Securities and Exchange Commission. UBS Investment Bank and Piper Jaffray &

Co. are acting as joint book-running managers of the offering, and Weisel

Partners LLC and A.G. are acting as co-managers of the offering.

AtriCure, Inc. is a medical device company focused on

developing, manufacturing and selling innovative surgical devices designed to

safely, rapidly and reliably create precise lesions, or scars, in soft tissues.

Leading cardiothoracic surgeons have adopted the AtriCure bipolar ablation

system as a standard treatment alternative to create lesions in cardiac, or

heart, tissue to block the abnormal electrical impulses that cause atrial

fibrillation, or AF, a rapid, irregular quivering of the upper chambers of the

heart.

The offering is made only by means of a prospectus. When

available, copies of the preliminary prospectus can be obtained from UBS

Investment Bank, Attention: Prospectus Dept., 299 Park Avenue, New York, NY

10171, or from Piper Jaffray & Co., 800 Nicollet Mall, Suite 800, Attention:

Equity Capital Markets, Minneapolis, MN 55402.

A registration statement relating to these securities

has been filed with the Securities and Exchange Commission, but has not yet

become effective. These securities may not be sold, nor may offers to buy be

accepted, prior to the time that the registration statement becomes effective.

This press release shall not constitute an offer to sell or the solicitation of

any offer to buy, nor shall there be any sale of these securities in any state

or jurisdiction in which such offer, solicitation or sale would be unlawful

prior to registration or qualification under the securities laws of any such

state or jurisdiction.

Contacts

AtriCure, Inc.

J. Drachman,

ddrachman@...

--------------------------------------------------------------------------