Patent ID: 7435238

Claim:
A medical device, comprising: a base member having first and second ends, a longitudinal axis, and a channel extending along the longitudinal axis; a needle assembly coupled to a first end of the base member, the needle assembly including a needle extending from an elongate member; a retractor mechanism coupled to the elongate member enabling rotation of the needle and coupled to the base member enabling retraction of a protruding needle in a use position, in which the needle is unparallel to the longitudinal axis, into the base member as the retractor mechanism slides in the channel to a non-use position in which the needle is at least partly captured in the base member, wherein retraction of the protruding needle is produced by a first force on the base member along the longitudinal axis and a second force on the retractor mechanism that is counter to the first force; and at least one stop mechanism to prevent rotation of the needle assembly with respect to the base member, wherein the at least one stop mechanism includes a protrusion on the elongate member that is insertable into a corresponding aperture in the retractor mechanism to prevent rotation of the needle.