Orthopedic surgery systems and devices for impacting implements in bones

An orthopedic impactor, comprising:

• a motor operatively coupled to a driveshaft, wherein the driveshaft is configured to be driven in a first direction and a second direction;
• an anvil configured to be operatively coupled to an implement handle;
• and
• an impaction cam operatively coupled to the driveshaft, wherein:
• the impaction cam, when in an impaction position, is configured to strike the anvil when driven by the driveshaft in the first direction to drive the anvil in an impaction direction,
• the impaction cam is configured to be retarded when a minimum force is sustained by the anvil,
• the impaction cam is configured to be forced back into the impaction position in a second axial direction when the impaction cam rotates past the anvil, and
• retarding the impaction cam is configured to force the impaction cam out of contact with the anvil in a first axial direction along a longitudinal axis of the driveshaft, wherein the impaction direction is in a radial direction to the first axial direction.

An orthopedic impactor, comprising:

• a motor operatively coupled to a driveshaft, wherein the driveshaft is configured to be driven in a first direction in a first mode for impaction and a second direction in a second mode for retraction;
• an anvil configured to be operatively coupled to an implement handle;
• an impaction cam operatively coupled to the driveshaft, wherein:
• the impaction cam, when in an impaction position, is configured to strike the anvil when driven by the driveshaft in the first direction to drive the anvil in an impaction direction,
• the impaction cam is configured to be retarded when a minimum force is sustained by the anvil, when retarded, the impaction cam is configured to be forced out of contact with the anvil in a first axial direction along a longitudinal axis of the driveshaft, and
• the impaction cam is configured to be forced back into the impaction position in a second axial direction when the impaction cam rotates past the anvil;
• the impaction cam including a plurality of sockets to interface with the driveshaft;
• a retraction cam operatively coupled the driveshaft, wherein the retraction cam is configured to be driven to spin by the driveshaft in the second direction;
• and
• a retractor configured to be driven by the retraction cam in the second direction, wherein the retractor is configured to strike the anvil to drive the anvil in a retraction direction.