Patent ID: 8070728

Claim:
A cannula kit for injecting implant material into a bone, the kit comprising: a first rigid cannula having a first proximal end and a first tube extending from the first proximal end along a longitudinal axis, the first tube defining a first longitudinal conduit and including a first distal end with at least two first distal openings defined therein in communication with the first conduit, the first proximal end including a first proximal axial port in communication with the first conduit and coaxial therewith, a first connection member adjacent the first proximal port, and at least one proximal side port in communication with the first conduit and located distally of the first connection member, the at least one proximal side port having a central axis different from the longitudinal axis; and a second rigid cannula having a second proximal end and a second tube extending from the second proximal end, the second tube defining a second longitudinal conduit and including a second distal end with at least one second distal opening defined therein in communication with the second conduit, the second tube having an outer diameter smaller than an inner diameter of the first tube, the second tube being insertable in the first tube through the first proximal axial port such that a peripheral conduit is defined between the first and second tubes, the second proximal end including a connector having a second connection member complementary to the first connection member, the complementary connection members together defining a detachable connection between the first and second cannulas; wherein with the second tube inserted in the first tube and the complementary connection members interconnected, each proximal side port is in communication with the peripheral conduit, at least one of the first distal openings provides communication between the peripheral conduit and an environment outside of the first tube, and each second distal opening provides communication between the central conduit and the environment outside of the first tube through at least one other of the first distal openings.