Abstract: Kerrison-style rod reducers, inline-style rod reducers, and related methods of using the disclosed rod reducers for holding a spinal implant and seating a fixation rod in a rod-receiving portion of the spinal implant are provided for herein. The disclosed rod reducers can also be configured for applying a set screw or other closure mechanism to secure the rod within the rod-receiving portion of the spinal implant. The disclosed embodiments can be easy to use, not require significant force to operate, and be efficient, thereby reducing the time and expense necessary to perform spinal surgery. The disclosed rod reducers can be readily dissembled, thereby making these surgical instruments easy to clean and sterilize.

Abstract: A spinal construct is disclosed. The spinal construct may include a connector having a body including a first implant cavity and a second implant cavity. The first implant cavity being defined, at least partly, by at least two threaded arm portions. The first implant cavity may include a first receiving cavity configured to adjustably orient a first rod in a plane substantially perpendicular to the first axis. The second implant cavity may include a second receiving cavity configured to orient a second rod. In some embodiments, the threaded arm portions may be configured to receive a first set screw such that when the first set screw is fully tightened along the first axis the first rod is fixed relative to the body in a direction extending substantially parallel with the plane. In some embodiments, the body may further include a threaded opening communicating with the second receiving cavity.

Abstract: An instrument set for connecting vertebral bodies, comprising a screw which can be screwed into a pedicle, a head piece which can be connected polyaxially to the screw for coupling to a rod system and which has a sleeve-shaped tulip having an opening for insertion of the screw head in an insertion direction, and a tool, is developed. The head piece has a saddle in the tulip, with a receiving region for receiving the screw head in a first end region that faces the opening and a coupling region that can be coupled to the tool in a second end region opposite the receiving region. The saddle can be moved between a released position and a locked position. In the locked position, the screw head cannot be disengaged from the receiving region, and the saddle can be fixed in a released position.

Abstract: In some embodiments, a method includes disposing a flexible band through an aperture of a support member, the support member having a fixation portion configured to secure the support member to a first bone portion. The method includes advancing a portion of the flexible band through an attachment portion of the flexible band until the flexible band is secured to a second bone portion. The method includes advancing a portion of the fixation portion of the support member into the first bone portion until the support member is secured to the first bone portion.

Abstract: Various embodiments of intervertebral implants, anchoring devices for intervertebral implants, and implantation instrumentation are provided, along with various embodiments of methods for using one or more of the devices. Some embodiments of an anchoring device have a body comprising at least one curve and a rigid plate elongated along a longitudinal axis so that its front end enters at least one vertebra while its rear end remains in the passage of an implant. In some embodiments, the plate comprises at least one longitudinal slot separating at least one posterior portion of the plate into two branches, with at least one branch comprising at least one withdrawal stop configured to retain the device in the implant.

Abstract: A bone anchoring device for anchoring a rod to a bone or vertebra includes a receiving part having two legs defining a channel for the rod, and a rod receiving member positionable in the channel, the rod receiving member including an upper surface and a lower surface defining a longitudinally extending passage for receiving the rod and respectively configured to restrict upward and downward movement of a rod received in the passage. The rod receiving member is adjustable from a first configuration where the passage is unobstructed and the rod is movable longitudinally through the passage, to a second configuration where an engagement surface attached to other portions of the rod receiving member is advanced axially into the passage to engage the rod while a rotational orientation of the engagement surface remains constant to restrict movement of the rod in the passage.

Abstract: An occipital fixation assembly is provided. The occipital fixation assembly includes a first mounting plate configured for placement within a sinus cavity adjacent a rear portion of a skull of a patient. A threaded post extends from the first mounting plate. A coupling member includes an aperture configured to receive the threaded post therethrough. The coupling member includes an offset extension configured to support a surgical rod thereon. A fixation nut configured to threadably engage the threaded post of the first mounting plate is rotatable about the threaded post and translatable therealong. The fixation nut is rotatable with respect to the first mounting plate and the coupling member such that rotation of the fixation nut in a predetermined direction brings the first mounting plate and the coupling member toward one another and into secured engagement with the skull of a patient.

Abstract: A system is provided for inserting and securing, through a suprapatellar region of a leg, a nail into a medullary canal of a bone. The system can include a flexible sleeve configured to be partially inserted in the leg. The flexible sleeve can define a leading end and a trailing end spaced apart from the leading end along a first axis. The flexible sleeve can define a first cannulation that extends along the first axis between the leading and trailing ends. The first cannulation can be sized to receive therethrough at least the intramedullary nail. The system can further include a retaining member configured support at least a portion of the flexible sleeve. The retaining member can be configured to position the flexible sleeve through the suprapatellar region of the leg such that the flexible sleeve leading end is aligned with the proximal end of the bone. The intramedullary nail can be insertable through the flexible sleeve and into the medullary canal.

Abstract: An introducer sheath system including an outer layer, an inner layer, and a dilator is disclosed. The outer layer is circumferentially extending between a first longitudinal edge and a second longitudinal edge. An expandable gap is defined between the first and second longitudinal edges. The inner layer is disposed within the outer layer. The inner layer is configured to be continuously circumferentially expandable. The inner layer includes a non-extended state having a circumferential portion extending circumferentially inside the outer layer and a fold portion extending into an interior cavity of the inner layer. The inner layer includes an extended state wherein the fold portion extends at least partially circumferentially between the first and second longitudinal edges. The dilator is extendable longitudinally within the inner layer. The dilator includes a recess configured to accommodate the fold portion of the inner layer.

Abstract: An anchor assembly can be couplable to a bone and can include an anchor and a housing. The anchor can include a shank securable to bone and a head coupled to a proximal portion of the shank. The housing can include a proximal portion including an anchor bore and a distal portion including a secondary bore configured to engage the anchor to limit angulation of the anchor relative to the housing.

Abstract: The description relates to an expandable intervertebral spacer configured to engage an intervertebral disk. An example expandable spacer includes a main body, a first endplate, a second endplate, a driving member, a plurality of pins, and an actuation member. The expandable spacer is configured to transition from a first configuration to a second configuration by various structures (e.g., steps, faceted surfaces, curved surfaces, multi-faceted portions) defined on the first endplate, the second endplate, and the driving member.

Abstract: Disclosed herein are systems and methods for intervertebral body fusion that provide more robust support within the disc space. Intervertebral body fusion devices can have a unitary monolithic body including a plurality of body segments interconnected with each other by flexure members. Devices be configured to be inserted through an opening in a compressed configuration and then expanded within the disc space to an expanded configuration. In the expanded configuration, devices can have a greater mediolateral or transverse to the disc space footprint. This wider footprint provides greater support for the vertebrae relative to the size of the opening through which the device is inserted.

Abstract: A spinal implant for insertion into a disc space between an upper vertebral body and a lower vertebral body is provided. The spinal implant includes an upper first end plate portion and a lower second end plate portion each extending from at least adjacent a proximal end to a distal end of the spinal implant. The spinal implant is configured to facilitate insertion into the disc space and inhibit withdrawal from the disc space. To the end, the leading end of the spinal implant can be configured to facilitate ease of insertion into the disc space, and an upper surface and a lower surface of the upper first end plant portion and the lower second end plate portion, respectively, can be provided with depressions or dimples forming ridges and points therebetween to inhibit withdrawal from the disc space.

Abstract: A fixation system includes an elongated rod, a fastener, a yoke, and an insert. The fastener includes a head with a truncated top portion. The yoke receives the rod and includes a yoke opening and a yoke cavity. The yoke cavity supports the head allowing for angular movement of the fastener. The insert is inserted into the yoke above the fastener and includes an insert base and a plurality of prongs. The insert base defines a base cavity that provides clearance for the head. The prongs extend away from the insert base and contact the head of the fastener below the truncated top portion. At least one set of the prongs has a length such that when the fastener is moved to a position of maximum angular movement within the yoke, at least one of the prongs is out of contact with the head of the fastener.

Abstract: The present disclosure discloses a device for surgery to stabilize bone segments, which includes a screw assembly, a supporting member, an extending member, and a fastening member. The supporting member is connected with an arm of a receiver of the screw assembly. The extending member includes a connecting portion and an extending portion. The connecting portion is located at one end of the extending member opposite to the receiver. The extending portion is connected to the arm with the supporting member passing through a through hole of the extending portion, and a portion of the supporting member protrudes out of the extending portion to the connecting portion. The fastening member is sleeved on the connecting portion and has a pressing groove. The supporting member is located between the connecting portion and the pressing groove. The pressing groove includes a release position and a pressing position for the supporting member.

Abstract: A polyaxial bone screw assembly includes a receiver having an axial bore with a pair of opposed downward-facing shoulder surfaces pre-formed therein between a discontinuous guide and advancement structure and a bottom opening, a shank having a capture portion configured for positioning into the axial bore with the shank extending downward through the bottom opening, and a pressure insert having upward-facing contact surfaces. The pressure insert is configured for positioning into the axial bore of the receiver into a first position and for subsequent rotation about a longitudinal axis by a tool into a second position that locates the upward-facing contact surfaces at least partially under the downward-facing shoulder surfaces to inhibit the pressure insert from moving upwardly within the axial bore.

Abstract: Retractor assemblies and methods of using them to retract tissue. A retractor assembly as described herein may include first and second arms pivotally coupled and each arm formed of a plurality of stacked and separated plates, spaced to define a gap therebeween, providing strength while affording a reduction in weight of the retractor assembly. The retractor assembly may also include a ratcheting locking mechanism.

Abstract: An external fixation system for the correction of long bone deformities includes an elongate beam element having an engagement feature along a longitudinal edge of the elongate beam element, a connector element secured to the elongate beam and structurally configured to support a first bone anchor extending from the external fixation system, and a movable carriage engaged with the engagement feature along the longitudinal edge of the elongate beam element and selectively movable along the engagement feature of the elongate beam element. The movable carriage is selectively lockable into a position along the elongate beam element. The movable carriage is structurally configured to support a second bone anchor extending from the external fixation system.

Abstract: The present invention relates to a connector for simultaneously fixing a screw head and a rod, wherein the connector can be firmly fixed to a screw head and a rod, which have been surgically inserted, without requiring disassembly of the screw head and the rod, thus minimizing damage to the affected region. The connector may comprise: a connecting block in which a head accommodation hole portion is formed on one side thereof to be able to accommodate at least a portion of a screw head installed in a vertebral body, and a rod accommodation groove portion is formed on the other side thereof to be able to accommodate at least a portion of a rod that extends from the screw head; a connecting rod formed in a shape extending from the connecting block; and a fixing device that fixes the connecting block to the screw head.

Abstract: In certain embodiments, an illuminating endoprobe system includes one or more light sources, a housing, a vitreous visualization fiber, and a general illumination fiber. The light sources generate a visualization light and an illumination light. The housing receives the visualization and illumination light, and has a probe tip with a probe axis. The vitreous visualization fiber transmits the visualization light through the probe tip. The visualization light has a visualization axis and a visualization beam angle at the probe tip. The general illumination fiber transmits the illumination light through the probe tip. The illumination light has an illumination axis and an illumination beam angle at the probe tip. The illumination beam angle is greater than the visualization beam angle, and the illumination axis is at an offset angle relative to the visualization axis, where the offset angle greater than 5 degrees.