SALT LAKE CITY--(BUSINESS WIRE)--Coherex Medical, Inc. today announced that it will host a lunch symposium titled “In-Tunnel PFO Closure: Treating the Tunnel Using the Coherex FlatStent™ EF PFO Closure System” on Tuesday, September 22, 2009 during TCT 2009 (the Transcatheter Cardiovascular Therapeutics conference).