Patents Assigned to Societe PSI
  • Intervertebral stabilization device incorporating dampers
    Patent number: 5540688
    Abstract: An intervertebral stabilization device is disclosed, made in the form of a damper adapted to resist elastically, on the one hand, an elongation and, on the other hand, an axial compression without buckling, as well as of at least two implants anchored on two adjacent vertebrae.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: July 30, 1996
    Assignee: Societe "PSI"
    Inventor: Fernand Navas
  • Application of an improved damper to an intervertebral stabilization device
    Patent number: 5375823
    Abstract: An improved damper, of the type comprising elements for progressively resisting, in exponential manner, the advance of a piston under the effect of a force of axial compression, which functions as a stop opposing any displacement of the piston beyond a predetermined value, in an intervertebral stabilization device.
    Type: Grant
    Filed: June 9, 1993
    Date of Patent: December 27, 1994
    Assignee: Societe PSI
    Inventor: Fernand Navas