Back to results
US 2019/0336175 A1Published application
Bone anchoring device
AssigneeBiedermann Technologies GmbH & Co. KG
InventorsWilfried Matthis, Martin Meer, Lutz Biedermann
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeBiedermann Technologies GmbH & Co. KG
InventorsWilfried Matthis, Martin Meer, Lutz Biedermann
Estimating the term…
A polyaxial bone anchoring device includes a bone anchoring element having a head and a shaft, a receiving part having a head receiving portion, a rod receiving portion, and a bore having a bore axis, and a pressure member movable in the bore and having a first surface for engaging the head, wherein the pressure member is movable to a first position where friction between the first surface and the head generates a preload on the head to maintain the shaft at a temporary angular position relative to the receiving part, and wherein the pressure member is configured to engage the receiving part to generate a holding force for holding the pressure member at the first position without a positive lock, and wherein the pressure member is movable in and out of the first position by applying an axial force on the pressure member greater than the holding force.
A polyaxial bone anchoring device comprising:
2-6. (canceled)
10-11. (canceled)
A method of manufacturing a polyaxial bone anchoring device comprising a bone anchoring element having a head and a shaft for anchoring to a bone, a receiving part for coupling the bone anchoring element to a rod, the receiving part having a head receiving portion with an accommodation space for accommodating the head, and a rod receiving portion with a bore in communication with the accommodation space, and a pressure member comprising a first surface for engaging the head and a second surface for engaging a rod, wherein when the bone anchoring element and the pressure member are in the receiving part, the pressure member is movable to a position where the head is locked relative to the receiving part, the method comprising:
13-16. (canceled)
A method for coupling a rod to a bone via a polyaxial bone anchoring device comprising a bone anchoring element having a head and a shaft for anchoring to a bone, a receiving part for coupling the bone anchoring element to a rod, the receiving part having a head receiving portion with an accommodation space for accommodating the head, and a rod receiving portion with a bore in communication with the accommodation space, and a pressure member movable in the bore and comprising a first surface for engaging the head and a second surface for engaging a rod, and a fixation element, the method comprising:
19-20. (canceled)
Dependencies are inferred from the claim text.