US 12,114,902 B2
Instrument for use with a bone anchoring device
Timo Biedermann, Trossingen (DE); Achim Schünemann, VS-Mühlhausen (DE); René Zandomeni, Vohrenbach (DE); and Dimosthenis Dandanopoulos, VS-Schwenningen (DE)
Assigned to BIEDERMANN TECHNOLOGIES GMBH & CO. KG, Donaueschingen (DE)
Filed by BIEDERMANN TECHNOLOGIES GMBH & CO. KG, Donaueschingen (DE)
Filed on Dec. 17, 2020, as Appl. No. 17/124,975.
Claims priority of provisional application 62/949,877, filed on Dec. 18, 2019.
Claims priority of application No. 19217722 (EP), filed on Dec. 18, 2019.
Prior Publication US 2021/0186575 A1, Jun. 24, 2021
Int. Cl. A61B 17/70 (2006.01); A61B 17/56 (2006.01)
CPC A61B 17/7076 (2013.01) [A61B 17/7032 (2013.01); A61B 2017/564 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An instrument for use with a receiving part for connecting a bone anchoring element to a rod, the receiving part comprising two legs that define a recess for receiving the rod, the instrument comprising:
a tube having a first end, a second end, and a longitudinal axis that extends between the first end and the second end, and defining a coaxial internal channel that opens towards the first end and the second end; and
two protruding portions monolithically formed with the tube and positioned diametrically opposite to one another for engagement with the recess of the receiving part to prevent rotational movement of the tube relative to the receiving part, wherein the tube comprises two diametrically opposite intermediate portions at the first end that are positioned circumferentially between the protruding portions in a manner such that the first end of the tube forms a closed ring;
wherein an outer diameter of the first end of the tube at the intermediate portions measured along a first direction that intersects the longitudinal axis is less than an outer diameter of another region of the tube adjacent where the protruding portions connect measured along a direction that intersects the longitudinal axis and that is parallel to the first direction, to facilitate positioning of the intermediate portions in a coaxial central passage of the receiving part when the protruding portions are advanced into the recess of the receiving part;
wherein each of the protruding portions has a first region that extends radially outwardly from an outer surface of the tube at the first end and a second region that extends axially away from the first end in a direction opposite the second end, and wherein an axial length of each of the protruding portions is less than an axial length of a region of the tube between the protruding portions and the second end of the tube.