Patent ID: 11931079
Assignee: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A bone anchoring device comprising:
a bone anchoring element comprising a shaft and a head;
a receiving part for receiving a rod for coupling the rod to the bone anchoring element, the receiving part comprising:
a receiving part body having a first end, a second end below the first end, a channel at the first end for receiving the rod, an engagement surface for engagement with a separate closure element for locking the rod in the channel, and an accommodation space at the second end for accommodating the head of the bone anchoring element; and
a pressure element positionable at least partially in the accommodation space, the pressure element comprising a rod contacting surface for contacting the rod when the pressure element is in the receiving part, and a head contacting surface for contacting and exerting pressure on the head, wherein the pressure element is insertable upwards from the second end of the receiving part body into the accommodation space;

wherein when the pressure element is in the receiving part body, the head is insertable from the second end of the receiving part body past an expandable portion of the bone anchoring device into the accommodation space, and the pressure element is movable to a pre-locking position where the pressure element is restricted from moving towards the first end of the receiving part body and where the head is clamped by friction between the head contacting surface and the expandable portion to temporarily hold an angular position of the receiving part body relative to the bone anchoring element.