Shares of Thoratec (THOR +15.6%) extend gains from AH trading off of the firm's Q4 earnings beat...

|About: Thoratec Corporation (THOR)|By:, SA News Editor

Shares of Thoratec (THOR +15.6%) extend gains from AH trading off of the firm's Q4 earnings beat and upward revision to FY12 guidance. The firm's CEO says in an earnings CC that revenue growth was led by the HeartMate and CentiMag product lines.