Spinal interbody cage comprising a bulk interbody cage, a top face, a bottom face, pillars, and slots

US11324606B2 · kind B2 · utility

Assignee

• Gary A. Zwick · US

Inventors

• George J. Picha · Independence, US
• Grant W. Phillips · Bedford, US
• Rachel Smith · Brecksville, US
• James PRICE · Conroe, US
• Gregory Causey · Broomfield, US

Key dates

• Filing date: Mar 8, 2018
• Grant date: May 10, 2022
• Expiry date: Mar 8, 2038

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/3093
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Spinal interbody cages are provided that include a bulk interbody cage, a top face, a bottom face, pillars, and slots. The pillars are for contacting vertebral bodies. The slots are to be occupied by bone of the vertebral bodies and/or by bone of a bone graft. The spinal interbody cage has a Young's modulus of elasticity of at least 3 GPa, and has a ratio of the sum of (i) the volumes of the slots to (ii) the sum of the volumes of the pillars and the volumes of the slots of 0.40:1 to 0.90:1.