Abstract: An orthopedic rotary tool may include a motor, a first clutch, a first drive path, a second drive path, a second clutch, a rotating mass, and an output anvil. The orthopedic rotary tool may drive, by the motor and the first clutch, a first drive path that causes the output anvil to rotate at a speed. The orthopedic rotary tool may selectively enable, by the motor and the second clutch, a second drive path that causes the rotating mass to engage to the output anvil and increase the speed of the output anvil.

Abstract: A rotary impactor for orthopedic surgery includes an output anvil and a hammer that is capable of imparting linear and rotary force on the anvil. The anvil may be moveable on a leadscrew element to alternately generate energy in an energy storage means and to move along the leadscrew element to impact the anvil. A viscoelastic mechanism or a dampening mechanism is used to reduce the reflected force and or torque during operation of the rotary impactor. High frequency linear impacts by the impactor obviate the need for a surgeon to provide an external push force on the impactor in order to perform a successful surgical operation.

Abstract: Intermediaries for a robot and robotic end effector for orthopedic surgery operatively couple a surgical robot to an end effector of such a robot. The intermediaries therefor comprise means to absorb and/or counteract reactionary forces from the end effector (which end effector may, as an example, be a surgical tool) and to reduce forces that would otherwise be imparted on the robot. An intermediary comprises a sleeve of shock-absorbing material that couples the robot and end effector. Another intermediary comprises an isolation connector that provides for an indirect coupling between the robot and the end effector and includes an absorption means for absorption or dispersion of reactionary forces from the end effector.

Abstract: An off-axis rotary tool may include a motor drive and a cutting head having teeth. During an operational cycle of the off-axis rotary tool, the cutting head may simultaneously precess about a precession axis and rotate about a rotation axis.

Abstract: An orthopedic rotary tool may include a motor, a first clutch, a first drive path, a second drive path, a second clutch, a rotating mass, and an output anvil. The orthopedic rotary tool may drive, by the motor and the first clutch, a first drive path that causes the output anvil to rotate at a speed. The orthopedic rotary tool may selectively enable, by the motor and the second clutch, a second drive path that causes the rotating mass to engage to the output anvil and increase the speed of the output anvil.

Abstract: A rotary impactor for orthopedic surgery includes an output anvil and a hammer that is capable of imparting linear and rotary force on the anvil. The anvil may be moveable on a leadscrew element to alternately generate energy in an energy storage means and to move along the leadscrew element to impact the anvil. A viscoelastic mechanism or a dampening mechanism is used to reduce the reflected force and or torque during operation of the rotary impactor. High frequency linear impacts by the impactor obviate the need for a surgeon to provide an external push force on the impactor in order to perform a successful surgical operation.

Abstract: Intermediaries for a robot and robotic end effector for orthopedic surgery operatively couple a surgical robot to an end effector of such a robot. The intermediaries therefor comprise means to absorb and/or counteract reactionary forces from the end effector (which end effector may, as an example, be a surgical tool) and to reduce forces that would otherwise be imparted on the robot. An intermediary comprises a sleeve of shock-absorbing material that couples the robot and end effector. Another intermediary comprises an isolation connector that provides for an indirect coupling between the robot and the end effector and includes an absorption means for absorption or dispersion of reactionary forces from the end effector.

Abstract: An apparatus for mixing bone cement for use in orthopedic surgeries includes a mixing region and an agitator for mix the cement ingredients. A temperature sensing means of apparatus determines when that the cement mix can no longer be used. The apparatus can be operated or acted on by a power tool for the mixing of the bone cement. The power tool and/or mixing apparatus may include a mechanical torque limiter that inhibits the agitator as a result of mixing torque exceeding a threshold value. A timer of the apparatus may be started by a sensor of the apparatus or by the user in response to a mechanical torque value. When the timer is complete, a cue by the apparatus signals to the user that the mixed cement is ready and able to be applied.