US 11,980,399 B2
Implants for spinal fixation or fusion
Ali H. Mesiwala, Claremont, CA (US); Mark A. Reiley, Delray Beach, FL (US); Paul Sand, Redwood City, CA (US); Bret W. Schneider, San Jose, CA (US); and Scott A. Yerby, Montara, CA (US)
Assigned to SI-Bone Inc., Santa Clara, CA (US)
Filed by SI-Bone Inc., Santa Clara, CA (US)
Filed on Mar. 30, 2021, as Appl. No. 17/217,794.
Application 15/903,410 is a division of application No. 14/216,863, filed on Mar. 17, 2014, granted, now 9,936,983, issued on Apr. 10, 2018.
Application 17/217,794 is a continuation of application No. 15/903,410, filed on Feb. 23, 2018, granted, now 10,959,758.
Claims priority of provisional application 61/793,803, filed on Mar. 15, 2013.
Prior Publication US 2021/0212734 A1, Jul. 15, 2021
Int. Cl. A61B 17/70 (2006.01); A61B 17/84 (2006.01)
CPC A61B 17/7055 (2013.01) [A61B 17/70 (2013.01); A61B 17/846 (2013.01)] 3 Claims
OG exemplary drawing
 
1. An implant for spinal fixation or fusion, the implant comprising:
an outer stem portion, a linear longitudinal axis, and an inner shank with a length such that it extends through the outer stem portion and distally from the outer stem portion, the outer stem portion having a triangular outer profile in a cross-section transverse to the linear longitudinal axis, the triangular outer profile defined by first, second and third apices, and first, second and third flat faces each between adjacent apices of the first, second and third apices,
the inner shank having one or more external interface features that are shaped to interface with corresponding one or more internal interface features on the outer stem portion to resist axial motion between the one or more external interface features and the corresponding one or more internal interface features,
the implant having a length and a configuration such that the outer stem extends in a sacrum and across a sacroiliac joint and the inner shank extends in an ilium when the implant is implanted within the sacrum, across the sacroiliac joint, and into the ilium.