Patent ID: 8034054
Filing Date: 2011-10-11
Classification: A61B

Abstract:
1. An intramedullary bone device comprising a distal outer member having at least one opening in a wall thereof, a proximal outer member for positioning in substantial axial alignment with the distal outer member, the proximal outer member having at least one opening in a wall thereof, said distal outer member having a passage therein, said proximal outer member having a passage therein, a distal inner member sized to be slideably received within the passage of the distal outer member, a proximal inner member sized to be slideably received within the passage of the proximal outer member, extension/retraction means being selectively operable to selectively alter the relative longitudinal positioning between the distal inner member and the proximal inner member, and pins movable between a retracted position and extended position, wherein the pins extend through the at least one opening in the distal and proximal outer members to fix the device to a bone during use, wherein rotation of the extension/retraction means in a first direction causes shortening of the device and rotation of the extension/retraction means in a second direction causes lengthening of the device and wherein at least one of the pins extends across a passage extending through the proximal inner member when the at least one pin is in the retracted position to prevent insertion of a tool through the passage of the proximal inner member and when the at least one pin is moved to the extended postion, the at least one pin no longer extends across the passage in the proximal inner member, thereby allowing a tool to be inserted along the passage to operate the extension/retraction means.