US 12,232,950 B2
Bone anchor insertion system having inserter coupling and decoupling
Brandon Wedam, North Plains, OR (US); Travis Cox, North Plains, OR (US); Steven P. Horst, Dayton, OR (US); and Tristan Sommers, Beaverton, OR (US)
Assigned to Acumed LLC, Hillsboro, OR (US)
Filed by Acumed LLC, Hillsboro, OR (US)
Filed on Nov. 1, 2021, as Appl. No. 17/516,205.
Claims priority of provisional application 63/108,672, filed on Nov. 2, 2020.
Prior Publication US 2022/0133466 A1, May 5, 2022
Int. Cl. A61F 2/08 (2006.01)
CPC A61F 2/0811 (2013.01) [A61F 2/0805 (2013.01); A61F 2002/0852 (2013.01); A61F 2002/0882 (2013.01); A61F 2210/0014 (2013.01); A61F 2220/0033 (2013.01); A61F 2230/0093 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A bone anchor insertion system comprising:
an inserter including a rod having an insertion tip and a first recess and a second recess adjacent to the insertion tip, wherein the insertion tip has a width greater than at least a portion of the rod; and
a bone anchor including:
a planar base portion comprising a distal end ending in a tip, a proximal end, and a transverse opening sized and configured to receive a suture therein,
first and second elongated wings extending from the base portion, wherein the first and second elongated wings are configured to bend towards and away from a central axis of the base portion, wherein the first and second elongated wings, the base portion, and the central axis are all in the same plane, and
a suture positioned through the opening of the base portion such that the suture is coupled to the bone anchor,
wherein the bone anchor is constructed of a shape memory material,
wherein each of the first and second elongated wings includes a protrusion directed at least partially towards the central axis, and wherein a distance between the protrusion of each wing increases when the first and second elongated wings are bent away from the central axis,
wherein the first wing comprises:
a first free end disposed at a distal most end of the first wing; and
a first fixed end opposite the first free end, wherein the first fixed end is disposed at a proximal most end of the first wing and connected to the proximal end of the base portion,
wherein the second wing comprises:
a second free end disposed at a distal most end of the second wing; and
a second fixed end opposite the second free end, wherein the second fixed end is disposed at a proximal most end of the second wing and connected to the proximal end of the base portion,
wherein the protrusions of the first and second wings are disposed at proximal portions of the first and second wings, respectively,
wherein the first free end of first wing and the second free end of the second wing are splayed away from the central axis of the base portion at a rest position,
wherein the bone anchor is configured such that the respective protrusions of the first and second elongated wings couple the insertion tip to the bone anchor,
wherein the protrusion of each wing is configured to engage the first recess and the second recess of the inserter, respectively, when the bone anchor is at rest to prevent translation of the inserter away from the bone anchor along the central axis,
wherein bending the first and second elongated wings towards the central axis increases a coupling strength of the bone anchor to the inserter,
wherein the bone anchor is configured such that bending the wings away from the central axis a threshold amount enables the insertion tip to decouple from the bone anchor.