Patent · US Active

Polyaxial bone anchoring device

US9339302B2 · kind B2 · utility

10Cited by

4References

18Claims

0Family size

Assignee

BIEDERMANN TECHNOLOGIES GMBH & CO. KG · DE

Inventors

Lutz Biedermann · Villingen-Schwenningen, DE
Wilfried Matthis · Kenzingen, DE
Bernd Fischer · Bräunlingen, DE

Key dates

Filing date	May 30, 2013
Grant date	May 17, 2016
Priority date	—
Expiry date	May 30, 2033

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2090/037
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A polyaxial bone anchoring device is provided, comprising a bone anchoring element having a shank, a head, a receiving part for pivotably receiving the head, and a channel for receiving a rod; a pressure member configured to be arranged in the receiving part and to exert pressure onto and lock the head; a locking assembly insertable into the channel, the locking assembly comprising a first locking member having a bore; a second locking member to be provided in the bore, wherein, when the second locking member is rotated, in a first configuration, the first locking member and the second locking member are rotationally fixed relative to each other and the first locking element is advanced to contact the pressure member and in a second configuration, the second locking member is rotatable within the first locking member and the second locking member is advanced to contact the rod.

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