In-vitro fixing device

The utility model relates to the technical field of in-vitro fixing devices, in particular to an in-vitro fixing device. The upper body of the human body can be effectively limited, a patient is prevented from turning over, and the structure is scientific and reasonable; comprising a bottom frame, a lying frame installed on the bottom frame and shoulder limiting mechanisms symmetrically installed on the two sides of the lying frame, and each shoulder limiting mechanism comprises a vertical arm installed on the lying frame, a horizontal arm installed on the vertical arm and a shoulder limiting sleeve installed on the horizontal arm; the shoulder limiting sleeve comprises a semicircular frame and a plurality of limiting belts which are arranged in a scissor-shaped mode and connected in a hinged mode. Two leg limiting mechanisms are symmetrically arranged on the lying frame, each leg limiting mechanism comprises a horizontal support and a U-shaped frame fixedly installed on the horizontal support, and an install