Patent ID: 8313148

Claim:
A guide sleeve, comprising a tube having an axial passage; and an radial flange at an upper end of the tube; wherein the flange includes a flange recess perpendicular to an axis of the said axial passage; and a continuous borehole configured to be aligned with the axial passage; a slider configured to be guided in sliding manner in the flange recess, the slider includes an external grip; a locking segment; and spring elements biasing the slider inward or outward of the recess, wherein the spring elements are constituted by a resilient, integral segment of the slider, said segment resting against a wall portion of the recess; the slider further comprises a protrusion at a underside thereof; and the flange further comprises an elongated slot at a lower wall of the recess, the protrusion is configured to be engaged with the slot, and the slot is configured to limit outward displacement of the slider imparted by a spring bias of the springs.