Patent ID: 7621730

Claim:
A modular surgical motor ( 51 ) for powering surgical tools comprising a first module ( 52 ) supporting a vane motor ( 55 ) and a second module ( 50 ) supporting a chuck ( 28 ), said first module ( 52 ) including an outer housing ( 3 ) defining a handle for the surgeon, an insert housing ( 2 ) supported in said outer housing ( 3 ) and radially spaced therefrom defining with said outer housing an annular dead-ended space ( 54 ) adjacent to said handle and said space ( 54 ) being filled with air to dampen vibrations and to insulate said handle from heat, said insert housing ( 2 ) includes a motor adapter ( 13 ) disposed on the aft end of said insert housing ( 2 ) for enclosing the end thereof, a center bore ( 57 ) formed therein for receiving pressurized air, a passageway ( 59 ) in said motor adapter ( 13 ) in fluid communication with said center bore ( 57 ) for leading the pressurized air toward the outer periphery of said insert housing ( 2 ) and another bore ( 61 ) formed in the peripheral portion of said motor adapter for leading discharge air out of said insert motor.