Intervertebral implant with fixation geometry

US11696837B2 · kind B2 · utility

Assignee

• DePuy Synthes Products, Inc. · US

Inventors

• Dominique Messerli · West Chester, US
• Ryan Walsh · Douglassville, US
• Brandon Randall · Chester Springs, US
• David E. Evans · Linglestown, US
• Jacqueline Myer · Pottstown, US
• David Koch · North Logan, US
• Markus Hunziker · Aarau, CH

Key dates

• Filing date: Dec 18, 2019
• Grant date: Jul 11, 2023
• Expiry date: Jun 15, 2041

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2310/00359
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An intervertebral spacer implant (80) is provided with a retention mechanism (86) to help alleviate expulsion and movement of the implant when placed in the spine while providing an implant that is easier to insert in the spine. In one embodiment the retention mechanism comprises a keel on at least one of the inferior or superior faces of the spacer implant preferably extending in an anterior-posterior direction. In another embodiment the implant comprises a spacer (84) and a plate (82), the plate comprising a supplemental or alternative retention mechanism. In one embodiment the retention mechanism comprises one or more holes (88) in the anterior end of the plate. In yet another embodiment, the retention mechanism comprises one or more blades that are in a first position when inserted and are preferably rotated to a second position that engages the superior and inferior vertebrae.