Zero-profile expandable intervertebral spacer devices for distraction and spinal fusion and a universal tool for their placement and expansion

US9848993B2 · kind B2 · utility

Assignee

• Nathan C. Moskowitz · US

Inventors

• Ahmnon D. Moskowitz · Rockville, US
• Mosheh T. Moskowitz · Rockville, US
• Pablo A. Valdivia Y. Alvarado · Cambridge, US
• Eric Sugalski · Arlington, US
• Nathan C. Moskowitz · Rockville, US

Key dates

• Filing date: Oct 25, 2013
• Grant date: Dec 26, 2017
• Expiry date: Oct 25, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2250/0007
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A unique, universal Zero-Profile Expandable Intervertebral Spacer (ZP-EIS) device for fusion and distraction throughout the entire spine is provided which can be inserted via anterior, anterolateral, lateral, far lateral or posterior surgical approaches dependent on the need and preference. Multiple ZP-EIS embodiments each with unique mechanisms of calibrated expansion are provided. Two of these embodiments incorporate bi-directional fixating transvertebral (BDFT) screws and five other embodiments do not incorporate BDFT screws. A tool for implantation into the intervertebral device and calibrated device expansion is also disclosed.