| http://www.w3.org/ns/prov#value | - 20120004621Medical Device with Retractable Needle and Moveable Plunger Seal - A medical device having a barrel, a retractable needle, a needle retraction assembly and a plunger, the needle retraction assembly including and being held inside the barrel prior to retraction at least in part by a retainer member contacting the barrel, the plunger comprising a plunger seal with an body having at least
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