Patent ID: 9585696
Date: 2017-03-07
CPC Classifications: A61B

Claim:
1. A bone anchoring device comprising a bone anchoring element having a head and a shank, a rod, a receiving part for connecting the bone anchoring element to the rod, and a securing element, the receiving part comprising: a first end, a second end, and a central axis extending between the first end and the second end, a recess having a substantially U-shaped cross section extending transversely to the central axis through the entire receiving part, wherein the recess is open at the first end of the receiving part and extends from the first end in a direction of the second end, wherein the recess forms two legs that come together to form a bottom of the recess, and wherein the recess defines a channel to receive the rod, and an outer surface that does not have a spherical profile extending continuously from the first end of the receiving part to the second end of the receiving part, wherein the two legs are configured to receive the securing element to secure the rod, and wherein the securing element is rotatable to engage the two legs, wherein the receiving part is polyaxially connectable to the bone anchoring element, wherein for at least one vertical cross-sectional plane that includes the central axis and that extends through the legs, the resulting cross-section of the receiving part has an outer profile with a first section, wherein an entire axial length of the first section has a maximum horizontal width measured in a direction perpendicular to the central axis that is greater than every other horizontal width of the outer profile, and wherein at least part of the first section is above the bottom of the recess, wherein the axial length of the first section is shorter than an axial distance between the first end of the receiving part and the first section, and wherein the maximum horizontal width of the first section is greater than every other horizontal width of the entire portion of the receiving part between the first end of the receiving part and the first section.