Patent ID: 8062270

Claim:
A system for implantation within a bone comprising: an insert comprising: a first end; a second end; a shaft connecting the first and second ends, wherein the shaft defines a cannulation extending along at least a portion of the length of the shaft; and a seal coupled to the insert shaft, the seal having an inner surface facing the cannulation of the insert shaft, wherein the seal is configured to provide access to the cannulation following implantation of the system within the bone, and wherein the seal is configured to self-seal after access is provided to the cannulation; an opening located through the first end of the insert shaft, wherein the seal comprises an end cap including an outer surface contacting a surface of the insert to directly couple the end cap to the insert shaft such that the end cap seals the opening; and a fenestration disposed along the cannulated portion of the insert shaft, wherein the cannulation provides a delivery pathway for a substance between the opening and the fenestration; and a bone screw comprising two ends connected by a shaft, wherein the insert is received by the bone screw, wherein the bone screw shaft is cannulated, wherein the insert is received within the bone screw cannulation and the insert is movable between: a first position wherein a surface of the bone screw blocks the insert fenestration preventing the substance from exiting the cannulated portion of the insert via the insert fenestration; and a second position wherein the insert provides a delivery pathway for the substance between at least one end of the insert and a portion of the bone.