Patent ID: 8328850
Filing Date: 2012-12-11
Classification: A61B

Abstract:
1. An immobilization device, comprising: an osseous anchoring element provided with a head having two vertical walls delimiting a central U-shaped opening whose bottom has a part cylindrical profile, each vertical wall being separated from the bottom of the central opening by a vertical slot giving elasticity to each vertical wall, said vertical walls including respectively at each end a profile in the form of a hooking blade disposed facing each other and on opposite sides of the central opening, said hooking blades including respectively in their upper portion snap-in teeth, and a blocking element including a seat, a screw-threaded bore opening within the seat, a tightening screw coacting with the screw-threaded bore and lugs which coact respectively with said teeth, the blocking element having a lower surface including a seat having part cylindrical profile, and an upper surface including a screw-threaded bore opening within the seat and in which coacts a tightening screw, and lateral surfaces parallel two by two and of which at least two of the lateral surfaces are secured respectively to the lugs.