Patent · US Active

Spinal screw assembly

US8690924B2 · kind B2 · utility

10Cited by

3References

20Claims

0Family size

Assignee

SPINEFRONTIER, INC · US

Inventors

Kingsley R. Chin · Fort Lauderdale, US
Craig Henshaw · Boston, US
Matthew Ibarra · Lakewood, US
Todd Sheppard Saunders · Boston, US

Key dates

Filing date	Jan 27, 2011
Grant date	Apr 8, 2014
Priority date	—
Expiry date	Mar 16, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49826
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A spinal screw assembly includes a bone-anchoring member, a washer, and a seat. The bone-anchoring member includes a main shaft, a washer head, and a spherical head. The spherical head extends upward from the top end of the main shaft and the washer head extends laterally from a location of the main shaft between the main shaft's top end and bottom end. The washer is polyaxially rotatable and positionable around the washer head and is configured to be placed at a first angle relative to the main shaft. The seat is polyaxially rotatable and positionable around the spherical head independent from the washer and is configured to be placed at a second angle relative to the main shaft, wherein the second angle is independent from the first angle.

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