Laminoplasty methods using hinge device

US8435265B2 · kind B2 · utility

Assignee

• DePuy Spine, Inc. · US

Inventors

• David D. Konieczynski · Needham, US
• John Riley Hawkins · Raynham, US
• Michael Andrew Slivka · Taunton, US
• Ed Zalenski · Lakeville, US
• Jayson S. Page · Attleboro, US
• Michael Mazzuca · North Easton, US
• Michael Jacene · Northbridge, US

Key dates

• Filing date: Mar 18, 2009
• Grant date: May 7, 2013
• Expiry date: Jun 28, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/037
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A vertebra implant is provided that includes an elongate body with a first end configured to mate the first end to a first location on a vertebra, and a second end having at least one fastener configured to mate the second end to a second location on a vertebra. The elongate body also includes a deformable portion extending between the first and second ends that has an unexpanded configuration in which the deformable portion is configured to allow a tool to cut bone extending between the first and second ends when the first and second ends are mated to first and second locations on a vertebra, and an expanded configuration in which the deformable portion is deformed to increase a distance between the first and second ends such that a gap is created in the cut bone. The deformable portion is configured to maintain the first and second ends at a fixed distance apart when the deformable portion is in the expanded configuration. A vertebral implant is also provided that includes an elongate member configured to extend into a vertebra and form a hinge therein using a breakage point located along a length of the elongate member.