Robotic rod benders and related mechanical and motor housings

A motor housing for a robotic rod bender, wherein the motor housing is configured to couple with a mechanical housing, the motor assembly comprising:

• a rod feeding motor configured to drive a rod feeding subassembly of the mechanical housing;
• a brake motor configured to drive a brake subassembly of the mechanical housing;
• a bending motor configured to drive a bending subassembly of the mechanical housing;
• a rod feeding transmission input configured to provide a first self-indexing input coupling with a rod feeding transmission output from the mechanical housing and to couple torque from the rod feeding motor to the rod feeding transmission output;
• a brake transmission input configured to provide a second self-indexing input coupling with a brake transmission output from the mechanical housing and to couple torque from the brake motor to the brake transmission output;
• and
• a bending transmission input configured to provide a third self-indexing input coupling with a bending transmission output from the mechanical housing and to couple torque from the bending motor to the bending transmission output.

A robotic rod bender comprising:

• a motor housing comprising,
• a first and second rod feeding/rotating motors,
• a brake motor,
• a bending motor,
• a first rod feeding/rotating transmission input configured to couple torque from the first rod feeding/rotating motor through a first self-indexing input coupling,
• a second rod feeding/rotating transmission input configured to couple torque from the first rod feeding/rotating motor through a first self-indexing input coupling,
• a brake transmission input configured to couple torque from the brake motor through a third self-indexing input coupling, and
• a bending transmission input configured to couple torque from the bending motor through a fourth self-indexing input coupling;
• and
• a mechanical housing coupled with the motor housing, the mechanical housing comprising,
• a rod feeding/rotating subassembly configured to feed a surgical rod in a longitudinal direction of the surgical rod and/or to rotate the surgical rod,
• a brake subassembly configured to receive the rod from the rod feeding/rotating subassembly and to fix the surgical rod in place,
• a bending subassembly configured to bend the surgical rod while the surgical rod is fixed in place by the brake subassembly,
• a first rod feeding/rotating transmission output providing a first self-indexing output coupling with the first self-indexing input coupling from the motor housing and configured to drive the rod feeding/rotating assembly responsive to torque coupled from the first rod feeding/rotating motor,
• a second rod feeding/rotating transmission output providing a second self-indexing output coupling with the second self-indexing input coupling from the motor housing and configured to drive the rod feeding/rotating assembly responsive to torque coupled from the second rod feeding/rotating motor,
• a brake transmission output providing a third self-indexing output coupling with the third self-indexing input coupling from the motor housing and configured to drive the brake subassembly responsive to torque coupled form the braking motor, and
• a bending transmission output providing a fourth self-indexing output coupling with the fourth self-indexing input coupling from the motor housing and configured to drive the bending subassembly responsive to torque coupled from the bending motor.