Abstract: Systems and methods are disclosed for maintaining spacing between a superior spinous process and a superior lamina, and an inferior spinous process and an inferior lamina of adjacent vertebrae of a spine. A system may include an implant having a proximal superior surface with a superior concavity shaped to receive the superior spinous process, a proximal inferior surface with an inferior concavity shaped to receive the inferior spinous process, a distal superior surface, distal to the proximal superior surface, that faces the superior lamina, and a distal inferior surface, distal to the proximal inferior surface, that faces the inferior lamina. The implant may further have a threaded member extending along a proximal-distal direction, that rotates to urge the implant to move from a retracted configuration to a deployed configuration by urging the distal superior surface and the distal inferior surface to move apart.

Abstract: An expandable intervertebral implant that includes an upper endplate having: a proximal end with a proximal ramp, and a distal end with a distal ramp. The proximal ramp includes a pair of upper proximal rails and the distal ramp includes a pair of upper distal rails. The expandable intervertebral implant also includes a lower endplate that includes a proximal end, a proximal ramp, a distal end, and a distal ramp. The proximal ramp includes a pair of lower proximal rails and the distal ramp includes a pair of lower distal rails. The at least one of the lower distal rails and the lower proximal rails is closer to a central plane than one or more of the upper distal rails and the upper proximal rails. The central plane divides a left side from a right side of the expandable intervertebral implant.

Abstract: Systems and methods are disclosed for maintaining spacing between a superior spinous process and a superior lamina, and an inferior spinous process and an inferior lamina of adjacent vertebrae of a spine. A system may include an implant having a proximal superior surface with a superior concavity shaped to receive the superior spinous process, a proximal inferior surface with an inferior concavity shaped to receive the inferior spinous process, a distal superior surface, distal to the proximal superior surface, that faces the superior lamina, and a distal inferior surface, distal to the proximal inferior surface, that faces the inferior lamina. The implant may further have a threaded member extending along a proximal-distal direction, that rotates to urge the implant to move from a retracted configuration to a deployed configuration by urging the distal superior surface and the distal inferior surface to move apart.

Abstract: An expandable intervertebral implant that includes an upper endplate having: a proximal end with a proximal ramp, and a distal end with a distal ramp. The proximal ramp includes a pair of upper proximal rails and the distal ramp includes a pair of upper distal rails. The expandable intervertebral implant also includes a lower endplate that includes a proximal end, a proximal ramp, a distal end, and a distal ramp. The proximal ramp includes a pair of lower proximal rails and the distal ramp includes a pair of lower distal rails. The at least one of the lower distal rails and the lower proximal rails is closer to a central plane than one or more of the upper distal rails and the upper proximal rails. The central plane divides a left side from a right side of the expandable intervertebral implant.

Abstract: Systems and methods are disclosed for maintaining spacing between a superior spinous process and a superior lamina, and an inferior spinous process and an inferior lamina of adjacent vertebrae of a spine. A system may include an implant having a proximal superior surface with a superior concavity shaped to receive the superior spinous process, a proximal inferior surface with an inferior concavity shaped to receive the inferior spinous process, a distal superior surface, distal to the proximal superior surface, that faces the superior lamina, and a distal inferior surface, distal to the proximal inferior surface, that faces the inferior lamina. The implant may further have a threaded member extending along a proximal-distal direction, that rotates to urge the implant to move from a retracted configuration to a deployed configuration by urging the distal superior surface and the distal inferior surface to move apart.

Abstract: An implant assembly may include a screw with a head having a head feature and an implant. The implant may be securable to a bone of a patient with the screw. The implant may include a bone plate, a rotatable structure having a top surface and a bottom surface. The bottom surface may include a lock feature. The lock feature may engage the head feature when the rotatable structure is in a locked orientation and disengage the head feature when the rotatable structure is in an unlocked orientation. The rotatable structure may couple to the bone plate such that the rotatable structure is rotatable between the locked orientation and the unlocked orientation. The head feature may be one of a ridge and a radial groove and the lock feature may be the other one of the ridge and the radial groove.

Abstract: An expandable intervertebral implant is disclosed for use in between adjacent vertebral bodies in a spine. An expandable intervertebral implant may include an upper plate having a first upper side and a second upper side, a lower plate having a first lower side, a second lower side, and a first lattice that connects the first upper side to the first lower side. The expandable intervertebral implant may further include a second lattice that connects the second upper side of the upper plate to the second lower side of the lower plate and an opening having a longitudinal axis between the upper plate, lower plate, first lattice, and second lattice. The expandable intervertebral implant may further include an expansion mechanism comprising a driver that expands the upper plate and the lower plate away from each other along a cephalad-caudal axis by deforming the first lattice and the second lattice.

Abstract: Systems and methods are disclosed for maintaining spacing between a superior spinous process and a superior lamina, and an inferior spinous process and an inferior lamina of adjacent vertebrae of a spine. A system may include an implant having a proximal superior surface with a superior concavity shaped to receive the superior spinous process, a proximal inferior surface with an inferior concavity shaped to receive the inferior spinous process, a distal superior surface, distal to the proximal superior surface, that faces the superior lamina, and a distal inferior surface, distal to the proximal inferior surface, that faces the inferior lamina. The implant may further have a threaded member extending along a proximal-distal direction, that rotates to urge the implant to move from a retracted configuration to a deployed configuration by urging the distal superior surface and the distal inferior surface to move apart.

Abstract: A polyaxial bone anchor assembly, comprising: a threaded screw portion comprising an externally threaded head end; a head body selectively disposed concentrically about the externally threaded head end of the threaded screw portion, wherein the head body defines an internally threaded hole in a bottom portion thereof; and an externally threaded compression saddle assembly selectively disposed within an interior portion of the head body and selectively engaging the externally threaded head end of the threaded screw portion; wherein the externally threaded compression saddle assembly and the externally threaded head end of the threaded screw portion are selectively disposed within the interior portion of the head body by engaging and passing through the internally threaded hole in the bottom portion of the head body.

Abstract: A polyaxial bone anchor assembly, comprising: a threaded screw portion comprising a head end; a head body disposed concentrically about the head end of the threaded screw portion; and a saddle assembly disposed within the head body and selectively engaging the head end of the threaded screw portion; wherein, when the saddle assembly is translated within the head body into a first locked position, the head body is coupled to the threaded screw portion such that disengagement of the head body from the threaded screw portion is allowed; and wherein, when the saddle assembly is translated within the head body into a second locked position, the head body is coupled to the threaded screw portion such that disengagement of the head body from the threaded screw portion is prevented.

Abstract: The present invention provides a minimally-invasive surgery pedicle screw and rod assembly, inserter tool, and insertion method for use in spinal stabilization procedures and the like. The screw and rod assembly utilizes a screw head body that has a pair of tab extenders that extend longitudinally from the head body to a point well outside of the skin and musculature of the patient. A rod is coupled to and translated along these tab extenders, ultimately into proximity with the head body. The rod is inserted into, aligned with, and translated along the length of the tab extenders, and then selectively pivoted about an enlarged partial spherical bearing into a configuration that is substantially perpendicular to the tab extenders and the head body. The present invention also provides an inserter tool that is used to dispose the rod concentrically within the tab extenders, translate the rod along the length of the tab extenders, and then pivot the rod with respect to the tab extenders and the head body.

Abstract: The present invention addresses rod rotation and slippage inside the tulip rod channel(s), as well as forcible rod bending as the spine and musculature bias towards a deformity, for example. The present invention provides a stabilization rod that, fundamentally, includes at least one flat surface on at least one side of the construct, this flat surface engaging a corresponding flat surface associated with the head body, set screw, or locking cap. Multiple flat surfaces may, of course, be used. The stabilization rod may also include one or more ridges and/or one or more keyed channels that is/are engaged by the head body, set screw, or locking cap.

Abstract: An interspinous fusion device for holding adjacent spinous processes of a spine of a patient in a fixed configuration, including: a first plate configured to engage one side of the adjacent spinous processes; a second plate configured to engage another side of the adjacent spinous processes opposite the one side of the adjacent spinous processes; and a spacer disposed between and coupling the first plate to the second plate, wherein the spacer allows one or more of the first plate and the second plate to pivot relative to the other plate in a first unlocked configuration and prevents one or more of the first plate and the second plate from pivoting relative to the other plate in a second locked configuration. Each of the first plate and the second plate includes a pair of opposed wing members protruding from a central bore.

Abstract: A bone anchor system utilizing an extended tab tulip having rails which extend from a point above the skin of a patient to a point proximal a bone anchor, and a slide member pivotally coupled to a rod, the slide member having engagement features which align to the rails of the extended tabs such that the coupled rod assembly is easily and efficiently guided to a position more proximate to the bone anchor and the rod is simultaneously pivoted into engagement with an adjacent bone anchor under the skin and musculature of the patient, for example.

Abstract: The present invention provides a minimally-invasive surgery pedicle screw and rod assembly, inserter tool, and insertion method for use in spinal stabilization procedures and the like. The screw and rod assembly utilizes a screw head body that has a pair of tab extenders that extend longitudinally from the head body to a point well outside of the skin and musculature of the patient. A rod is coupled to and translated along these tab extenders, ultimately into proximity with the head body. The rod is inserted into, aligned with, and translated along the length of the tab extenders, and then selectively pivoted about an enlarged partial spherical bearing into a configuration that is substantially perpendicular to the tab extenders and the head body. The present invention also provides an inserter tool that is used to dispose the rod concentrically within the tab extenders, translate the rod along the length of the tab extenders, and then pivot the rod with respect to the tab extenders and the head body.

Abstract: A bone anchor system utilizing an extended tab tulip having rails which extend from a point above the skin of a patient to a point proximal a bone anchor, and a slide member pivotally coupled to a rod, the slide member having engagement features which align to the rails of the extended tabs such that the coupled rod assembly is easily and efficiently guided to a position more proximate to the bone anchor and the rod is simultaneously pivoted into engagement with an adjacent bone anchor under the skin and musculature of the patient, for example.

Abstract: An interspinous fusion device for holding adjacent spinous processes of a spine of a patient in a fixed configuration, including: a first plate configured to engage one side of the adjacent spinous processes; a second plate configured to engage another side of the adjacent spinous processes opposite the one side of the adjacent spinous processes; and a spacer disposed between and coupling the first plate to the second plate, wherein the spacer allows one or more of the first plate and the second plate to pivot relative to the other plate in a first unlocked configuration and prevents one or more of the first plate and the second plate from pivoting relative to the other plate in a second locked configuration. Each of the first plate and the second plate includes a pair of opposed wing members protruding from a central bore.

Abstract: A polyaxial bone anchor assembly, comprising: a threaded screw portion comprising a head end; a head body disposed concentrically about the head end of the threaded screw portion; and a saddle assembly disposed within the head body and selectively engaging the head end of the threaded screw portion; wherein, when the saddle assembly is translated within the head body into a first locked position, the head body is coupled to the threaded screw portion such that disengagement of the head body from the threaded screw portion is allowed; and wherein, when the saddle assembly is translated within the head body into a second locked position, the head body is coupled to the threaded screw portion such that disengagement of the head body from the threaded screw portion is prevented.