US 12,076,053 B2
Polyaxial bone anchoring device with enlarged pivot angle
Lutz Biedermann, VS-Villingen (DE); and Wilfried Matthis, Weisweil (DE)
Assigned to BIEDERMANN TECHNOLOGIES GMBH & CO. KG, Donaueschingen (DE)
Filed by BIEDERMANN TECHNOLOGIES GMBH & CO. KG, Donaueschingen (DE)
Filed on Sep. 29, 2021, as Appl. No. 17/488,786.
Application 17/488,786 is a continuation of application No. 16/924,897, filed on Jul. 9, 2020, granted, now 11,154,334.
Application 16/924,897 is a continuation of application No. 16/107,387, filed on Aug. 21, 2018, granted, now 10,722,272, issued on Jul. 28, 2020.
Application 16/107,387 is a continuation of application No. 15/008,273, filed on Jan. 27, 2016, granted, now 10,064,659, issued on Sep. 4, 2018.
Application 15/008,273 is a continuation of application No. 13/948,700, filed on Jul. 23, 2013, granted, now 9,277,942, issued on Mar. 8, 2016.
Claims priority of provisional application 61/676,485, filed on Jul. 27, 2012.
Claims priority of application No. 12178289 (EP), filed on Jul. 27, 2012.
Prior Publication US 2022/0087720 A1, Mar. 24, 2022
Int. Cl. A61B 17/70 (2006.01); A61B 17/86 (2006.01)
CPC A61B 17/7037 (2013.01) [A61B 17/7032 (2013.01); A61B 17/7035 (2013.01); A61B 17/7038 (2013.01); A61B 17/8605 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A polyaxial bone anchoring device comprising:
a receiving part for coupling a rod to a bone anchoring element, the receiving part comprising a top end, a bottom end, a longitudinal axis that opens that extends from the top end toward the bottom end, two arms defining a channel open to the top end for receiving the rod, an opening at the bottom end through which the longitudinal axis extends for accommodating at least part of the bone anchoring element, an inner surface, and an internal groove that is formed in and recessed from respective portions of the inner surface above and below the internal groove; and
an inner member positionable at least partially in the internal groove, the inner member configured to maintain a connection between the receiving part and the bone anchoring element;
wherein the internal groove extends circumferentially around a central axis that is oriented at a first angle oblique to the longitudinal axis, and wherein a central axis of the inner member is configured to be oriented at a second angle oblique to the longitudinal axis that is smaller than a maximum angle of angulation between the receiving part and a connected bone anchoring element.