This case is a shoulder knife holder,The utility model comprises a bracket having a longitudinal outer tube,The bottom of the outer tube is horizontally connected with a shaft rod；A waist plate fixedly connected to the outer tube and the front of the shaft rod,A shoulder board above the waistboard,The shoulder plate can be horizontally moved to the left or right side in the front direction of the outer tube for positioning；A fast combining mechanism with a pair of first clamping seats,The inner side of the first clamping seat is respectively longitudinally provided with a support frame,The top surface of each support frame is concave with a rod groove for the end of the shaft rod to span,And a safety buckle is pivoted around each rod groove, which can make the shaft rod in each rod groove buckle and lock or break away from the unlocking；A driving mechanism with a driving rod,The upper end of the driving rod is pivoted with the outer tube,The lower end is pivoted to a second clamping seat,The driving rod can form a support with respect to the outer tubePosition and adjust the tilt angle.本案係一種肩開刀架，其包括具有一縱向外管之支架，該外管底部橫向連接一軸桿；一固接於該外管及該軸桿前方之腰板，一位於該腰板上方之肩板，該肩板能在該外管前方向左側或向右側橫移至定位；一具有一對第一夾座之快速結合機構，該對第一夾座內側各自縱向裝設一支承架，各支承架頂面凹設一供該軸桿端部跨置的桿槽，且各桿槽周圍樞接一能對各桿槽內的該軸桿形成扣接上鎖或脫離解鎖的安全扣；一具有一驅動桿之驅動機構，該驅動桿上端部樞設該外管，而下端部則樞接於一第二夾座，使得該驅動桿相對該外管能形成支撐、定位與調整傾斜角度作用。
