A medical manipulator equipped with a distal end working unit on a distal end of a shaft that extends from a handle, the distal end working unit being capable of being tilted with respect to the shaft, the medical manipulator being constituted so as to mechanically transmit an input operation with respect to a tilt operating member provided on the handle to thereby tiltably operate the distal end working unit, and further being equipped with a brake mechanism, wherein the brake mechanism comprises: a brake rotor that rotates in conjunction with rotation of the tilt operating member; and a brake shoe, which is capable of advancing and retracting with respect to the brake rotor, and is capable of contacting an outer circumference of the brake rotor, wherein: based on an elastic force of an elastic member, the brake shoe is pressed against the brake rotor to thereby generate a braking force; a braking action is released by separating the brake shoe away from the brake rotor in opposition to the elastic force; a first gear is disposed along a circumferential direction on the outer circumference of the brake rotor; and a second gear, which is capable of meshing with the first gear, is disposed on a portion of the brake shoe that confronts the outer circumference of the brake rotor;and based on the elastic force of the elastic member, the brake shoe is pressed against the brake rotor, whereby rotation of the brake rotor is prevented, and an angle of the distal end working unit with respect to the shaft is fixed; the brake mechanism further comprising a slide member, which is elastically pressed by the elastic member toward the brake rotor, and is capable of being advanced and retracted with respect to the brake rotor, wherein the brake shoe is a component that is attached to the slide member, characterized in that the second gear extends in an arcuate shape conforming to the outer circumference of the brake rotor; and the brake shoe is mounted on the slide member in a state of being capable of swinging slightly with respect to the slide member. a brake rotor that rotates in conjunction with rotation of the tilt operating member; and a brake shoe, which is capable of advancing and retracting with respect to the brake rotor, and is capable of contacting an outer circumference of the brake rotor, wherein: based on an elastic force of an elastic member, the brake shoe is pressed against the brake rotor to thereby generate a braking force; a braking action is released by separating the brake shoe away from the brake rotor in opposition to the elastic force; a first gear is disposed along a circumferential direction on the outer circumference of the brake rotor; and a second gear, which is capable of meshing with the first gear, is disposed on a portion of the brake shoe that confronts the outer circumference of the brake rotor;and based on the elastic force of the elastic member, the brake shoe is pressed against the brake rotor, whereby rotation of the brake rotor is prevented, and an angle of the distal end working unit with respect to the shaft is fixed; the brake mechanism further comprising a slide member, which is elastically pressed by the elastic member toward the brake rotor, and is capable of being advanced and retracted with respect to the brake rotor, wherein the brake shoe is a component that is attached to the slide member, characterized in that the second gear extends in an arcuate shape conforming to the outer circumference of the brake rotor; and the brake shoe is mounted on the slide member in a state of being capable of swinging slightly with respect to the slide member. based on an elastic force of an elastic member, the brake shoe is pressed against the brake rotor to thereby generate a braking force; a braking action is released by separating the brake shoe away from the brake rotor in opposition to the elastic force; a first gear is disposed along a circumferential direction on the outer circumference of the brake rotor; and a second gear, which is capable of meshing with the first gear, is disposed on a portion of the brake shoe that confronts the outer circumference of the brake rotor;and based on the elastic force of the elastic member, the brake shoe is pressed against the brake rotor, whereby rotation of the brake rotor is prevented, and an angle of the distal end working unit with respect to the shaft is fixed; the brake mechanism further comprising a slide member, which is elastically pressed by the elastic member toward the brake rotor, and is capable of being advanced and retracted with respect to the brake rotor, wherein the brake shoe is a component that is attached to the slide member, characterized in that the second gear extends in an arcuate shape conforming to the outer circumference of the brake rotor; and the brake shoe is mounted on the slide member in a state of being capable of swinging slightly with respect to the slide member.