Patent ID: 6241730
Filing Date: 2001-06-05
Classification: A61B,Y10T

Abstract:
An intervertebral link device comprising at least one damper element comprising a cage and a pin having a collar, a free end and a securable end, the securable end of the pin designed to be connected to bone anchor elements, the free end of the pin being engaged in a housing of the cage and being fitted with two elastically deformable members operating in opposition to an applied traction force or compression force,wherein the damper element comprises:the pin which is mounted inside the cage by a joint allowing multidirectional relative pivoting between the pin and the cage at least about axes contained in a plane perpendicular to the pin; andan angular abutment device having a first angular abutment between the housing and the collar of the pin, enabling the multidirectional relative pivoting to be limited in amplitude to a determined value of about 4.degree., the angular abutment device further comprising a second angular abutment at the free end of the pin and the housing against which the free end of pin comes into abutment, the pin and the housing having predetermined radial clearance to allow relative pivoting of the determined value.