Patent ID: 8100919

Claim:
A surgery equipment holding device, comprising: means for holding surgery equipment, capable of changing the direction of surgery equipment being held; means for maintaining the fixation force of the means for holding at a predetermined value; means for disengaging the fixation force of the means for maintaining; and means for changing the fixation force of the means for maintaining over time, based on instructions from the means for disengaging, wherein the means for changing controls the amount of change of the fixation force per time increment in the fixation disengaging operation of the means for maintaining to be smaller than the amount of change of the fixation force per time increment in the fixation operation of the means for maintaining, so that the disengaging operation of the surgery equipment holding device is performed gradually, and the fixing operation of the surgery equipment holding device is performed speedily, wherein the means for maintaining comprises electromagnetic brakes for fixing by pressing with a member, and lowering the pressing force of the member by increasing a voltage to the electromagnetic brakes; and wherein the means for changing comprises a control circuit for controlling sequentially the driving electrical current output to the electromagnetic brakes.