CHELMSFORD, Mass.--(BUSINESS WIRE)--ZOLL Medical Corporation (Nasdaq GS: ZOLL), a manufacturer of resuscitation devices and related software solutions, today announced that revenues for the third quarter of fiscal 2011 increased 22% to $136.2 million, compared to revenues in the third quarter of last year of $111.3 million. Net income increased 65% to $9.5 million for the quarter, compared to $5.7 million in the prior year. Diluted earnings per share grew 62% to $0.42, compared to $0.26 in the prior year. Backlog at the end of the third quarter was approximately $32 million, as compared to $29 million at the end of Q2 2011 and $14 million at the end of Q3 2010.