BONE ANCHOR WITH A PLUG UNIT FOR PREVENTING LEAKAGE OF A BONE CEMENT AND A TOOL FOR INSERTING THE PLUG UNIT INTO THE BONE ANCHOR

摘要

PURPOSE: A bone anchor with a plug unit and a tool for inserting the bone cement into the bone anchor are provided to prevent a vascular structure from being damaged by preventing the leakage of the bone cement from a free end of the bone anchor.;CONSTITUTION: A bone anchor includes a shaft(7), a channel(11,12), and a plug unit(30). The shaft has a first end and a second end. The channel is extended from the first end to the second end of the shaft. The plug unit is inserted into the channel from the first end of the shaft and closes the channel in the second end of the shaft. The plug unit has a ball shape. A stop(13) is adjacent to the second end of the shaft to prevent the insertion of the plug unit.;COPYRIGHT KIPO 2010