SURGICAL DRILL HAVING A BRAKE THAT, UPON THE DRILL BIT PENETRATING THROUGH BONE, PREVENTS FURTHER INSERTION OF THE DRILL

摘要

A surgical drill for use with a drill bit. The drill includes a handpiece with a motor and a brake mechanism. The brake mechanism is a sliding rack adjacent a first end and a second end with a stop adjacent the drill bit. An actuator is mounted to the handpiece and a plunger is coupled to the actuator. A sensor asserts a signal when the drill bit penetrates bone. When the sensor asserts the signal indicting the drill bit penetrated bone, the actuator moves the plunger into engagement with the rack to prevent further insertion of the drill bit.

主权项

1. A surgical drill comprising:
a handpiece with a motor, a chuck attached to the motor for releasably holding a drill bit to the motor so the drill bit can be rotated by the motor; a telescoping rod having opposed proximal and distal ends, the proximal section of the rod moveably mounted to the handpiece to allow the rod to move proximally and distally along the handpiece and a stop attached to the distal end of the rod so as to be located a distal end of the drill by and abut tissue adjacent the tissue into which the drill bit bores; a brake assembly is attached to said handpiece, said brake assembly including a member against having:
a brake that is moveable attached to said handpiece to move between an engage and disengaged positions with the telescoping rod, wherein when the member is in the engaged with the telescoping rod, said member stops movement of the telescoping rod; and an actuator, that in response to a command signal, selectively moves said brake from the disengaged position to the engaged position.