Multi-layer anatomic discal spacer for lumbar spinal pathology, has upper and lower layers comprising titanium plate at notched surface, superposed intermediate layer made up of elastic material e.g. elastomer plastic material

摘要

#CMT# #/CMT# The spacer (1) has a superposed upper layer (2) comprising a titanium plate at a notched surface, a superposed lower layer (3) with same structure as the layer (2) and a superposed intermediate layer (4) that is made up of a material different from the layers (2, 3) and is rigid. The layer (4) is made up of an elastic material e.g. elastomer plastic material such as polyaddition or condensation polymerization silicon plastic material or polyurethane plastic material. The layer (4) has holes regularly or irregularly distributed in the layer (4). #CMT#USE : #/CMT# Used in a lumbar spinal pathology, for being inserted between two vertebrae by a surgeon during prosthesis. #CMT#ADVANTAGE : #/CMT# The elastic intermediate layer permits to tolerate the imprecision of positioning and is deformed according to the anatomic movements without imposing fixed trajectory or particular kinematics. The upper and lower layers are constituted of the titanium plate at the notched surface so as to ensure long term excellent stability. The holes distributed in the intermediate layer permits to offer a desired dampening effect. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective view of a multi-layer anatomic discal spacer. 1 : Multi-layer anatomic discal spacer 2 : Superposed upper layer 3 : Superposed lower layer 4 : Superposed intermediate layer.