Patent · US Active

Locking and lagging bone screws

US9060821B2 · kind B2 · utility

2Cited by

12References

27Claims

0Family size

Assignee

DePuy Synthes Products, Inc. · US

Inventors

Daniel Vennard · Clayton, US
William Miller · North Middleboro, US

Key dates

Filing date	Nov 16, 2012
Grant date	Jun 23, 2015
Priority date	—
Expiry date	Apr 17, 2033

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B17/863
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A locking and lagging bone screw. The screw includes a head having an outer surface which is at least partially threaded and a shaft which is at least partially threaded having a first end coupled to the head and a second end adapted to be fastened to bone. The head of the screw is able to rotate independently of the shaft. Thus, the head of the screw can be locked to a bone plate by using a first driver (e.g., a torx driver) and the plate can be lagged to the bone by using a second driver (e.g., a hex driver).

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