Bone plate system

US8900277B2 · kind B2 · utility

Assignee

• Pioneer Surgical Technology, Inc. · US

Inventors

• Scott J. Perrow · Saginaw, US
• Joseph Mohar · Marquette, US
• Lawrence Mosca · Marquette, US
• Matthew P. Gephart · Marquette, US
• Brian Patrick Janowski · Marquette, US
• Brad Fredin · Negaunee, US
• Francis J. Korhonen · Negaunee, US
• Matthew N. Songer · Marquette, US

Key dates

• Filing date: Mar 22, 2011
• Grant date: Dec 2, 2014
• Expiry date: Feb 25, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B17/8033
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A bone plate system having a retainer for resisting back-out of a bone anchor from a throughbore of a bone plate is provided. In one aspect, a bone plate system having a resilient retainer disposed in a bone plate throughbore with a pair of elongate arm portions of the resilient retainer extending along opposite sides of the throughbore. In another aspect, a bone plate system having a resilient retainer with a pair of elongate interference portions completely exposed in the throughbore and spaced from each other across the throughbore to retain a head of a bone anchor received in the throughbore. In addition, a bone plate system having a resilient retainer with a pair of opposite end portions disposed within a groove of a throughbore wall such that a bone anchor may be inserted into the throughbore without contacting either of the opposite end portions of the retainer.