A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
A61F 2/44 (2006.01) A61F 2/30 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01)
Patent
CA 2515773
An expandable intervertebral implant (10) having an external member (12) and an internal member (14). The implant includes a locking arrangement (50) having a first interlocking teeth structure (56) formed on the external member and a second interlocking teeth structure (58) formed on the internal member. The interlocking teeth structures of the external and internal members have engagement surfaces (76, 86) arranged in a non-perpendicular orientation relative to the direction of implant expansion. The locking arrangement is configured such that walls of the internal member are pulled or flexed toward the walls of the external member when compressive forces are applied to the implant.
Cette invention concerne un implant intervertébral extensible comprenant un élément externe (12) et un élément interne (14). L'implant est doté d'un dispositif de blocage (50) qui comporte une première structure dentée de verrouillage (56) sur l'élément externe et une seconde structure dentée de verrouillage (58) sur l'élément interne. Les structures dentées de verrouillage des éléments interne et externe présentent des surfaces d'engagement (76, 86) orientées de façon non perpendiculaire à la direction d'extension de l'implant. Le dispositif de blocage est conçu de sorte que les parois de l'élément interne soit tirées ou fléchies en direction des parois de l'élément externe lorsque des l'implant est soumis à des forces de compression.
Bentley Ishmael
Mujwid James R.
Goudreau Gage Dubuc
Zimmer Spine Inc.
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