Patent ID: 7615070

Claim:
A bone implant and a sleeve, said bone implant formed of a screw, nail or post, said sleeve designed for at least partial insertion into a bone or cartilage of a spinal column, said sleeve including a top opening and a cavity that are designed to at least partially receive said bone implant and to releasably secure an outer surface of said bone implant to an inner surface of said cavity, said sleeve designed to be inserted into bone or cartilage so that an outer surface of said sleeve is secured to an interior portion of said bone or cartilage, said cavity of said sleeve designed to at least partially receive said bone implant after said sleeve is at least partially inserted into the interior portion of said bone or cartilage so that when said bone implant is at least partially inserted into said sleeve said bone implant is then also at least partially inserted into said bone or cartilage, said inner surface of said cavity including a connector designed to releasably connect to said outer surface of said bone implant, at least portion of said connector in said cavity designed to be positioned in said interior portion of said bone or cartilage when said sleeve is at least partially positioned in the interior of said bone or cartilage; said bone implant comprising a head, a lower portion connected to the head and a mechanical mechanism; said head and said lower portion including an outer surface region, at least a portion of said outer surface region of said lower portion designed to perform one or more functions selected from the group consisting of i) discharge an electrical current and ii) discharge a medical substance; said mechanical mechanism at least partially positioned in or on said screw, nail or post; said mechanical mechanism designed to at least partially discharge at least one medical substance from a medical substance reservoir to at least a portion of said outer surface region; said mechanical mechanism including a pump and a controller, said controller designed to at least partially control a rate at which said pump causes said medical substance to discharge from said outer surface region.