Dermatome with adjustable width and depth guards

1. A device for harvesting skin, comprising a handle, a battery unit, and a head unit, wherein said head unit comprises:

(a) an axle having a first half and a second half, wherein said axle is connected between a right side wall of said head unit and a left side wall of said head unit;

(b) a blade having a blade edge; and

(c) two blade guard units slidably receiving said axle, wherein each of said two blade guard units is laterally adjustable on said first half and said second half of said axle in real time, wherein said device further comprises a depth adjuster system comprising two stepper motor actuators, wherein said two stepper motor actuators are activatable via a button panel comprising a first button and a second button, wherein said blade is retractable by pushing said first button.

2. The device of claim 1 , wherein each of said two blade guard units comprises a top portion, a middle portion, and a bottom portion.

3. The device of claim 2 , wherein said top portion is arc-shaped.

4. The device of claim 3 , wherein said top portion is operable for gripping.

5. The device of claim 2 , wherein said middle portion extends vertically between said top portion and said bottom portion.

6. The device of claim 2 , wherein said bottom portion prevents a portion of said blade edge of said blade from being exposed at a front end of said head unit.

7. The device of claim 1 , wherein said blade is secured to a blade plate.

8. The device of claim 7 , wherein said blade plate is connected to a bottom of said head unit.

9. The device of claim 1 , further comprising a blade driver in communication with said blade for oscillating said blade.

10. The device of claim 1 , wherein said blade is protractable by pushing said second button.

11. The device of claim 1 , wherein said blade comprises a low friction coating.

12. The device of claim 1 , wherein said blade is adapted to cut 30/1,000 inch of a skin tissue.

13. The device of claim 1 , wherein said head unit and said handle are attached via complementary connectors.

14. The device of claim 1 , wherein said head unit comprises a lever for controlling power to said blade.

15. A method for harvesting skin, wherein said method comprises:

(a) positioning a device for harvesting skin on a skin surface of a subject, wherein said device for harvesting skin comprises a handle, a battery unit, and a head unit, wherein said head unit comprises:

an axle having a first half and a second half, wherein said axle is connected between a right side wall of said head unit and a left side wall of said head unit;

a blade having a blade edge; and

two blade guard units slidably receiving said axle, wherein each of said two blade guard units is laterally adjustable on said first half and said second half of said axle;

(b) moving said device for harvesting skin across said skin surface of said subject, wherein said blade edge cuts a first width of a skin from said skin surface of said subject, wherein said first width of said skin corresponds to a first distance between said two blade guard units;

(c) laterally adjusting said two blade guard units on said first half of said axle in real time, wherein said first distance between said two blade guard units is increased or decreased to yield a second distance; and

(d) moving said device for harvesting skin across said skin surface of said subject, wherein said blade edge cuts a second width of said skin from said skin surface of said subject, wherein said second width of said skin corresponds to said second distance between said two blade guard units.

16. A device for harvesting skin, comprising a handle, a battery unit, and a head unit, wherein said head unit comprises:

(a) an axle positioned between a first side wall and a second side wall;

(b) a blade; and

(c) two blade guard units attached to said axle, wherein said two blade guard units are laterally adjustable on said axle in real time, wherein each of said two blade guard units comprises a top portion, a middle portion, and a bottom portion, wherein said top portion is joined to said middle portion and said middle portion is joined to said bottom portion, wherein said top portion of each of said two blade guard units is arc-shaped and faces said first side wall or said second side wall.

17. The device of claim 16 , wherein said top portions of said two blade guard units face in opposite directions.