The invention provides a distal movement center mechanism for surgery.It is mainly composed of a horizontal mechanism unit and a vertical mechanism unit.To create a unique design,The distal motion center mechanism for the operation of the invention is only provided with an X-axis.The craniotomy can be completed by generating a cone shape motion space at the distal center of three degrees of freedom generated by the intersection of Y-axis and z-axis.The ring cutting path and cutting depth can be controlled separately.To achieve the effect of motion decoupling,Compared with the existing complex craniotomy mechanism,The control difficulty of the invention is relatively low；In addition, the invention can provide the craniotomy tool to keep vertical when moving along the skull surface.And the invention has two sets of horizontal planes with single degree of freedom.Vertical plane parallel connecting rod group,It can provide better mechanism rigidity.本發明係提供一種手術用之遠端運動中心機構，主要係藉由一水平機構單元及一垂直機構單元所構成；藉此創新獨特設計，使本發明手術用之遠端運動中心機構僅以X軸、Y軸及Z軸相交所產生之三自由度之遠端運動中心點產生一圓錐體形態之運動空間即可完成開顱手術，且環狀切削路徑與切削深度可分開控制，達到運動解耦之效，相較於現有複雜的開顱機構，本發明控制難度相對較低；此外本創作除可提供開顱刀具沿著顱骨表面運動時保持垂直，且本發明具有二組單自由度之水平面、垂直面平行連桿組，可提供較佳的機構剛性者。
