US 11,701,145 B2
Spinal fixation device
Michael Barrus, Redondo Beach, CA (US)
Assigned to K2M, Inc., Leesburg, VA (US)
Filed by K2M, Inc., Leesburg, VA (US)
Filed on Jun. 19, 2020, as Appl. No. 16/906,215.
Application 16/172,084 is a division of application No. 14/185,193, filed on Feb. 20, 2014, abandoned.
Application 16/906,215 is a continuation of application No. 16/172,084, filed on Oct. 26, 2018, granted, now 10,722,271.
Prior Publication US 2020/0390473 A1, Dec. 17, 2020
Int. Cl. A61B 17/70 (2006.01)
CPC A61B 17/7032 (2013.01) [A61B 17/705 (2013.01); A61B 17/7056 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A spinal fixation device, comprising:
a body portion including a stud portion projecting from a bottom portion along a stud axis, the stud portion defining an opening extending into the stud portion along a radial direction with respect to the stud axis, and the bottom portion configured to be affixed with respect to a spinal bone;
an outer housing having a bore extending through the outer housing along a bore axis, the outer housing positionable on the stud portion; and
an inner housing having an opening therein passing completely through a wall of the inner housing along the radial direction from an outer surface of the inner housing to an inner surface of the inner housing, the inner housing positionable in a received position extending through the bore of the outer housing with the inner housing being between the outer housing and the stud portion, such that the outer surface of the inner housing abuts the outer housing within the bore and the inner surface of the inner housing abuts the stud portion; wherein, in the received position, the inner housing receives the stud portion so as to constrain movement between the body portion and the inner housing to rotation about the stud axis and so as to preclude pivoting between the inner housing and the stud portion about any axis other than the stud axis, and the opening of the stud portion is alignable with the opening defined in the inner housing such that a pin between can be passed via the opening of the inner housing through the wall of the inner housing along the radial direction and into the opening of the stud portion.