Patent ID: 7527611
Filing Date: 2009-05-05
Classification: A61B

Abstract:
1. A system for delivering a substance to a bone, the system comprising: (a) a bone screw comprising two ends connected by a shaft, wherein the shaft is threaded along at least a portion of its exterior and cannulated along at least a portion of its length, and further wherein the bone-screw is threaded along at least a portion of its interior; (b) one or more bone-screw fenestrations disposed along the cannulated portion of the bone-screw shaft; (c) an insert disposed inside the bone-screw cannulation, wherein the insert is cannulated along at least a portion of its length, and further wherein the insert is threaded along at least a portion of its exterior and configured to interlock with the threaded portion of the bone-screw cannulation; and (d) one or more insert fenestrations disposed along the cannulated portion of the insert.