Patent · US Active

Spinal fixation system

US8882817B2 · kind B2 · utility

56Cited by

44References

28Claims

0Family size

Assignee

K2M, Inc. · US

Inventors

Scott A. Jones · Carmel, US
Oheneba Boachie-Adjei · Ossining, US
Larry McClintock · Gore, US
Kevin R. Strauss · Columbia, US
John Carbone · Timonium, US

Key dates

Filing date	Aug 22, 2011
Grant date	Nov 11, 2014
Priority date	—
Expiry date	Sep 23, 2032

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B17/7032
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A polyaxial pedicle screw includes a housing, a bone screw member, and an anvil. The bone screw member includes a head and a threaded shaft extending from the head. The head is selectively securable within the housing. The anvil is positionable within the housing adjacent to the head of the bone screw member when the anvil and the head of the bone screw member are positioned within the housing. The anvil may define one or more grooves in an outer surface of the anvil. The groove defines a flap that is flexibly attached to the anvil to enable the anvil to flex an amount sufficient to maintain the head of the bone screw in constant contact with the anvil when the bone screw member is moved relative to the anvil.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.