The incident occurred in late November 2010, when Gallagher visited the club on Castor Avenue near Balfour Street with friends to celebrate his impending marriage, said his attorney, Neil T. Murray.
His friends bought him the bachelor's package, and the dancers brought him onstage, directing him to lie flat on his back beneath the pole, Murray said.
One dancer shimmied up the pole, and "from a great height, she launched herself down onto his abdomen," Murray said.
The boom left the groom in such severe pain that he and his friends left. By the next morning, Gallagher was suffering so much he went to the hospital, where doctors diagnosed a ruptured bladder that required surgery to repair, Murray said. Murray said Gallagher also suffered nerve damage in his back and hip.
The lawsuit accuses the club of negligence and seeks at least $50,000 for medical costs, pain, humiliation and mental anguish.
A club manager referred comment to the owner, who couldn't be reached.
Court records show Gallagher's lawsuit is one of several filed in recent years against the club. The other lawsuits allege a beating by bouncers, a slip-and-fall injury, overserving of alcohol and the unauthorized use of a woman's photographs in club advertisements.
The club also caught headlines last November, when police arrested seven dancers and a manager on prostitution charges.
Contact Dana DiFilippo at firstname.lastname@example.org or 215-854-5934. Follow her on Twitter @DanaDiFilippo. Read her blog at phillyconfidential.com.