Surgery – Instruments – Orthopedic instrumentation
Patent
1995-03-02
1997-09-16
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
606 96, 606170, A61B 1732, A61B 1716
Patent
active
056675097
ABSTRACT:
A bone drill enclosed by a retractable sheath, the sheath having bevel points at its distal end for engaging the bone and a spring at its proximal end for resiliently urging the distal end against the surface of the bone while allowing the sheath to be retracted as the drill penetrates the bone. The sheath telescopically shields the bone drill to protect the adjacent tissue from the rotating bone drill. Indicia on the sheath provide a visual indication of the depth to which the drill bit has penetrated into the bone by the degree to which the sheath has been retracted as the bone drill penetrates into the bone. The bone drill is configured with a hollow, tubular shaft having an orifice adjacent the drill bit. Suction is applied to the lumen of the bone drill to remove debris generated by the drilling action, the debris being drawn through the orifice.
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Buiz Michael
Woo Julian W.
Young J. Winslow
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