Patent ID: 9675398
Date: 2017-06-13
CPC Classifications: A61B

Claim:
1. An implant for kyphoplasty, the implant comprising: two endpieces disposed coaxially with respect to a central longitudinal axis and at an axial distance from each other; and a cage connecting said endpieces and concentrically surrounding the central longitudinal axis, said cage containing a plurality of webs connecting said two endpieces, said webs each having two ends, in an initial state of the implant, being offset from each other by an equal initial angle in a circumferential direction with respect to the central longitudinal axis, the implant being brought to an expansion state by rotation of said two endpieces in opposite directions about the central longitudinal axis, during which rotation circumferential positions of said two ends of each of said webs move toward each other, in the expansion state said webs being plastically deformed and the implant remains mechanically stable in the expansion state and does not spring back.