US 11,717,329 B2
Coupling device for coupling a rod to a bone anchoring element and method of manufacturing the same
Timo Biedermann, Trossingen (DE); Bernd Fischer, Bräunlingen (DE); and Tobias Hägle, Donaueschingen (DE)
Assigned to BIEDERMANN TECHNOLOGIES GMBH & CO. KG, Donaueschingen (DE)
Filed by BIEDERMANN TECHNOLOGIES GMBH & CO. KG, Donaueschingen (DE)
Filed on Aug. 2, 2022, as Appl. No. 17/879,685.
Claims priority of provisional application 63/229,231, filed on Aug. 4, 2021.
Claims priority of application No. 21189722 (EP), filed on Aug. 4, 2021.
Prior Publication US 2023/0039136 A1, Feb. 9, 2023
Int. Cl. A61B 17/70 (2006.01); A61B 17/00 (2006.01); A61B 17/56 (2006.01)
CPC A61B 17/7037 (2013.01) [A61B 17/7032 (2013.01); A61B 2017/00526 (2013.01); A61B 2017/564 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coupling device for coupling a rod to a bone anchoring element, the coupling device comprising:
a receiving part having a first end and a second end below the first end, and comprising a head receiving portion defining an accommodation space for receiving a head of the bone anchoring element, a rod receiving portion defining a recess for receiving the rod, a downwardly facing surface, and an upwardly facing surface below and monolithically formed with the downwardly facing surface; and
a locking member movable relative to the receiving part from a first position where the head is insertable into the head receiving portion to a second position where a maximum size of an opening at the second end of the receiving part is reduced to prevent the head from being removed from the head receiving portion;
wherein at least part of the locking member is held to the receiving part between the downwardly and upwardly facing surfaces, and wherein the receiving part and the locking member are only separable from one another by permanently deforming or damaging at least one of the receiving part or the locking member.