US 11,701,148 B2
Bone screw implant for sacroiliac joint fusion
David T. Mehl, Lake in the Hills, IL (US); and Ali H. Mesiwala, Claremont, CA (US)
Assigned to Life Spine, Inc., Huntley, IL (US)
Filed by Life Spine, Inc., Huntley, IL (US)
Filed on Mar. 24, 2021, as Appl. No. 17/210,724.
Application 17/210,724 is a division of application No. 16/447,945, filed on Jun. 20, 2019, granted, now 11,045,238.
Claims priority of provisional application 62/687,339, filed on Jun. 20, 2018.
Prior Publication US 2021/0212733 A1, Jul. 15, 2021
Int. Cl. A61B 17/70 (2006.01); A61B 17/16 (2006.01); A61B 17/86 (2006.01); A61F 2/28 (2006.01); A61F 2/44 (2006.01); A61F 2/30 (2006.01)
CPC A61B 17/7055 (2013.01) [A61B 17/1635 (2013.01); A61B 17/86 (2013.01); A61B 17/863 (2013.01); A61B 17/1671 (2013.01); A61B 17/7001 (2013.01); A61F 2/28 (2013.01); A61F 2/4455 (2013.01); A61F 2002/30622 (2013.01); A61F 2002/30995 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An implant for sacroiliac joint fusion comprising:
a bone screw having a shank with a proximal end and a distal end, the shank defining a longitudinal axis from the proximal end to the distal end with an internal bore extending along the longitudinal axis from the proximal end to the distal end, the proximal end having sleeve engagement geometry comprising first external threading extending from the proximal end along a first distance towards the distal end, a smooth portion on the exterior of the shank extending from the first external threading a second distance towards the distal end, and a circumferential ridge about the smooth portion on the exterior of the shank, the distal end having a tip with self-tapping geometry, and the shank having second external threading extending from the tip to the sleeve engagement geometry, and self-harvesting bone cutting geometry in the second external threading and shank from the tip to the sleeve engagement geometry that gathers and retains bone shavings produced by the bone cutting geometry; and
a cylindrical sleeve having an external surface, a first end, a second end, a cylindrical bore extending from the first end to the second end and defining an internal surface, anti-rotation geometry on the external surface comprising tapered fins, and bone screw engagement geometry on the internal surface including a circumferential groove and internal threading, the circumferential ridge of the sleeve engagement geometry of the bone screw configured to be received in the circumferential groove of the sleeve, and the second external threading of the bone screw configured to be threadedly received by the internal threading of the sleeve.