Diagnostic specimen collector

Claim 1

A diagnostic specimen collector consisting of: an elongated hollow body open at one end and closed at the opposite end with a single orifice in said closed end; a plunger having sealing means on one end which is slidably inserted into, and in sealing relationship with, said body to vary the interior volume of said body; a closure for said closed end orifice consisting of a onepiece cap having an end wall with a skirt extension exteriorly mounted to encompass said closed end concentrically and rotatable thereabout and a nipple to receive compatible fittings of specimen taking medical devices extending outwardly from the outer surface of said end wall and an orifice in said closure passing axially through said nipple and said end wall, said closure being rotatable from a first position in which both orifices are out of communication and said closed end orifice is in a sealed condition to a second position in which both orifices are in sealed communication for the passage of a specimen upon movement of said plunger and back to said first position after passage of said specimen; and an O-ring seal for said closed end orifice positioned concentrically with reference to said orifice in an annular groove on the outer surface of said closed end, a portion of said O-ring extending above said closed end outer surface to create a friction-free space between said outer surface and the inner surface of said end wall except for a moving area of sealing contact between said ring portion and the inner surface of the end wall, said ring portion providing a bearing surface for said rotation of said closure.