Patent ID: 7201742
Filing Date: 2007-04-10
Classification: A61M

Abstract:
1. A needle assembly adapted to be used with a conventional syringe and including: an elongate needle mount having a forward end and a rearward end spaced along an axis, wherein the rearward end of the needle mount is adapted to be mounted directly onto a forward end of a conventional syringe; a needle extending axially from the forward end of the elongate needle mount; and a sheath mounted on the elongate needle mount for reciprocal axial movement between a forward position whereat the sheath covers the needle and a rearward position whereat the needle is exposed, wherein the sheath is initially in the forward position and is adapted to be moved without rotation to the rearward position whereat it is retained, and wherein rotation of the sheath relative to the elongate needle mount about the axis releases the sheath to return to a final forward position, and wherein the needle mount and the sheath co-operate to define a first path along which the sheath moves from the initial forward position to the rearward position, and wherein the needle mount and the sheath co-operate to define a second path along which the sheath moves from the rearward position to the final forward position, said second path being angularly spaced about said axis relative to said first path.