NEW YORK (AP): A U.S. district judge has ordering Zimmer Holdings Inc. to pay Stryker Corp. about $228 million in a patent-infringement case.
 
  Judge Robert Jonker of the U.S. District Court for Michigan's Western District threw out Zimmer's challenge of a jury verdict in Stryker's favor.
 
  The jury had awarded Stryker $70 million and Jonker tripled that amount to $210 million because Warsaw-based Zimmer willfully infringed on three patents held by Stryker. Jonker also said Stryker is entitled to $18  million in additional damages and interest.
 
  Stryker sued Zimmer in 2010, saying Zimmer's line of Pulsavac Plus devices infringed on its patents. They are hand-held, battery-powered, disposable devices used to clean wounds and remove dead tissue during surgery.
 
  Zimmer says it's disappointed and plans to appeal