US 12,082,829 B2
Geared instrument for minimally invasive surgery
Erin Muller, Fort Wayne, IN (US); Joseph Ryan Woodard, Memphis, TN (US); and Terrance W. Strohkirch, Memphis, TN (US)
Assigned to WRIGHT MEDICAL TECHNOLOGY, INC., Memphis, TN (US)
Appl. No. 17/603,527
Filed by WRIGHT MEDICAL TECHNOLOGY, INC., Memphis, TN (US)
PCT Filed Mar. 20, 2020, PCT No. PCT/US2020/023775
§ 371(c)(1), (2) Date Oct. 13, 2021,
PCT Pub. No. WO2020/242561, PCT Pub. Date Dec. 3, 2020.
Claims priority of provisional application 62/854,073, filed on May 29, 2019.
Prior Publication US 2022/0211396 A1, Jul. 7, 2022
Int. Cl. A61B 17/17 (2006.01); A61B 17/02 (2006.01); A61B 17/16 (2006.01)
CPC A61B 17/1775 (2016.11) [A61B 17/025 (2013.01); A61B 17/1642 (2013.01); A61B 17/1682 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
an instrument, comprising:
a shaft extending from a first end to a second end and defining a first axis between the first end and the second end;
a first gear coupled to the first end of the shaft such that rotation of the shaft about the first axis causes rotation of the first gear about the first axis;
a second gear enmeshed with the first gear;
a reamer coupled to the second gear; and
a third gear enmeshed with the first gear and a second reamer coupled to the third gear;
wherein rotation of the shaft about the first axis causes rotation of the reamer about a second axis that is non-parallel with the first axis such that, with the instrument at least partially disposed in a joint space between a first bone and a second bone, rotation of the reamer removes material from the joint space such that the second reamer extends in a different direction than the reamer such that, when the instrument is at least partially disposed in the joint space, the reamer faces the first bone and the second reamer faces the second bone; and
a distractor, comprising:
a first arm defining a first passage configured to receive a first pin inserted in the first bone;
a second arm defining a second passage configured to receive a second pin inserted in the second bone; and
a retainer extending from the first arm, wherein the retainer is configured to engage the instrument to retain the instrument in position;
wherein the distance between the first passage and the second passage is adjustable.