Patent · US Active

Semi-constrained bone screw and insertion instrument

US10426534B2 · kind B2 · utility

0Cited by

5References

22Claims

0Family size

Assignee

K2M, Inc. · US

Inventors

Todd Wallenstein · Ashburn, US
Megan Carnes · Leesburg, US
John Donohoe · Sterling, US

Key dates

Filing date	Oct 24, 2016
Grant date	Oct 1, 2019
Priority date	—
Expiry date	Jan 7, 2037

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2017/564
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A bone screw for attaching a spinal prosthetic or bone plate to bone includes a tubular body having open proximal and distal ends. The open proximal and distal ends define a passageway therethrough. A shaft is insertable into the passageway and includes a distal tip that extends beyond the open distal end. The shaft is insertable through a lumen of a head of the bone screw. A gap is defined between a distal surface of the head and a proximal end of the tubular body. The shaft is rotationally fixed with the tubular body and the head. The head is repositionable with respect to the shaft such that an acute angle is defined between the head and a longitudinal axis of the shaft.

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