Medical device with removable motor

1. A medical device, comprising:

a handpiece having a housing;

a drive system arranged at least partially within the housing and adapted to operate a tool configured for contact with human matter of a patient at a treatment site, the drive system comprising a drive shaft having a first gear arranged thereon;

a suction system integrated into the drive system and configured to remove human matter from the treatment site; and

a motor removably attachable to the housing and configured for delivering rotational power to the drive system while avoiding contact with the human matter, the motor comprising a motor shaft and a second gear, wherein the second gear is arranged on a distal end thereof and configured for direct rotational engagement with the first gear when the motor is attached to the housing.

2. The medical device of claim 1 , wherein the suction system is integrated into the drive system by way of a lumen extending through the drive shaft.

3. The medical device of claim 1 , wherein the motor is eccentrically arranged relative to the drive shaft.

4. The medical device of claim 1 , wherein the first gear comprises a bevel pinion gear and the second gear comprises a bevel drive gear.

5. The medical device of claim 4 , wherein the bevel drive gear is concentrically arranged on the drive shaft.

6. The medical device of claim 1 , wherein the motor is a non-cannulated motor.

7. The medical device of claim 1 , wherein the housing comprises a motor-engaging interface having a channel with rails and the motor comprises a protruding element with rails and grooves adapted to slidingly engage the channel.

8. The medical device of claim 7 , wherein the housing comprises a motor latch for securing the motor in position along the motor-engaging interface.

9. The medical device of claim 8 , wherein the motor latch comprises one or more cutouts on a sidewall thereof defining a release button and a living hinge.

10. The medical device of claim 9 , wherein the motor latch further comprises an inwardly extending tab on each of the rails of the channel.

11. The medical device of claim 10 , wherein the grooves of the protruding element of the motor each comprise a notch for engaging respective inwardly extending tabs on the rails of the channel.

12. The medical device of claim 11 , wherein a bottom of the channel comprises a convex surface and a bottom surface of the protruding element comprise a corresponding concave surface.

13. The medical device of claim 12 , further comprising a removable and reusable grip.

14. A debridement device, comprising:

a handpiece having a housing;

a drive system arranged within the housing and adapted to operate a debridement tool configured for contact with human matter of a patient at a debridement site, the drive system comprising a drive shaft having a first gear arranged thereon;

a suction system integrated into the drive system and configured to remove human matter from the debridement site; and

a motor removably attachable to the housing and configured for delivering rotational power to the drive system while avoiding contact with the human matter, the motor comprising a motor shaft and a second gear, wherein the second gear is arranged on a distal end thereof and configured for direct rotational engagement with the first gear when the motor is attached to the housing.

15. The debridement device of claim 14 , wherein the debridement tool is a blade or burr.

16. The debridement device of claim 14 , wherein the debridement tool comprises an outer tube extending distally from the handpiece and the tool is arranged in the outer tube.

17. A method of using a medical device, comprising:

attaching a motor to a handpiece to engage the motor with a drive system of the handpiece, the drive system having a drive shaft with a first gear thereon and the motor comprising motor shaft and a second gear, wherein the second gear is arranged on a distal end thereof and configured for direct rotational engagement with the first gear when the motor is attached to the handpiece;

powering the drive system with the motor to operate a tool in direct contact with human matter of a patient at a treatment site;

removing human matter from the treatment site with a suction system integrated into the drive system; and

removing and reusing the motor without reprocessing the motor.

18. The method of claim 17 , wherein removing the motor from the handpiece comprises pressing a release button on the handpiece and slidingly removing the motor from the handpiece.