Abstract: A surgical retractor assembly is provided having a frame that releasably couples two retractor blades. The retractor blades are coupled to the frame via a pair of mobile carriages that engage a track on the frame. A third retractor blade is configured to be independent of the frame with the first two retractor blades. The independent blade may be fixably positionable in the patient by a direct coupling to a rigid table mount. The retractor assembly may be utilized for creating anterior access to spinal target site while the patient is oriented in the lateral decubitus position.

Abstract: An arthrodesis nail and nail adapter system having multiple coupling positions includes a bent arthrodesis nail and a nail adapter. The nail has multiple evenly spaced notches. The nail adapter has multiple evenly spaced protrusions corresponding to the notches. An arthrodesis nail adapter and target arm system having multiple coupling positions includes a nail adapter and a target arm. The nail adapter has a predetermined coupling orientation with a bent arthrodesis nail. The target arm has multiple coupling positions with the nail adapter. The arthrodesis nail and nail adapter system allows rotation of the bent nail for reduction of ankle deformity.

Abstract: An evacuation adapter for use with a surgical access device includes a distal section selectively engageable with a proximal section. The distal section and the proximal section each include a base, an outer ring, and an inner ring. Each base defines a central opening. Each outer ring defines at least one opening. Each inner ring defines at least one opening. The outer ring of the proximal section includes a port. The proximal section is rotatable relative to the distal section between a first position where fluid is able to flow from the central opening of the distal section through the port, and a second position where fluid is blocked from flowing from the central opening of the distal section through the port.

Abstract: A system configured to increase height of a vertebral body. An implant includes plates each defining a bearing surface configured to be moved away from one another to expand the implant within the vertebral body. Supports are each coupled to one of the plates and include a reduced thickness portion defining a material web configured to plastically deform during expansion of the implant. The system includes an implant carrier with which an end element of the implant is removably coupled, and a rod configured to be translated relative to the implant carrier to cause expansion of the implant. An opposed portion may be coupled to the supports and configured to receive a longitudinal force to be moved relative to the end element. Second supports may be each coupled to the end element and one of the plates. Each of the second supports may plastically deform during expansion of the implant.

Abstract: Disclosed herein are systems and methods for manipulating the orientation of a plurality of bone fragments with respect to one another. A bone transport frame including first and second rings, a plurality of elongate struts, and a plurality of ring transport assemblies for orienting a first bone segment with respect to a second bone segment is disclosed. A third ring may be included in the bone transport frame for orienting a third bone segment with respect to the first and second bone segments. Manipulation of an adjustable member of the bone transport frame can transport a ring in either a proximal or distal direction with respect to other rings of the frame. Manipulation of another adjustable member of the bone transport frame can translate a central axis of one of the rings either toward or away from the central axes of the plurality of elongate struts.

Abstract: A surgical system for adjusting a segment of a spine is disclosed. The system may include a rack arm extending in a longitudinal direction from a first end to a second end, and a sliding body portion including a ratcheting mechanism selectively engageable with a spline portion of the rack arm. The system may include a first actuator for translating the sliding body along the rack arm in the longitudinal direction. The system may include a first and second connection tower extending along a first and second axis, respectively, that are each transverse to the longitudinal direction. The system may further include a second actuator including a threaded screw for adjusting the first connection tower along a first axis. In some embodiments, the second actuator is configured to raise and lower the first connection tower in a sagittal plane.

Abstract: Attachment devices and methods of using the same are disclosed. The attachment devices can be fenestrated. The fenestrations can control the flow of fluid out of and/or into the device.

Abstract: The present disclosure relates to polyaxial bone screws and methods that enable the positioning of the polyaxial bone screws to be reliably determined using a surgical navigation system including a navigation probe. In an embodiment, a polyaxial bone screw comprises a threaded shaft inserted in bone and a head connected to the shaft, the head being rotatable relative to the shaft about a centre of rotation of the head of the bone screw. The position of a navigation probe is monitored using a navigation device. A first mating surface of the head of the bone screw is engaged with a second mating surface of the navigation probe; and the location of the centre of rotation of the head of the bone screw is determined based on the monitored position of the navigation probe when the first mating surface and the second mating surface are engaged.

Abstract: A pivotal bone anchor assembly includes a receiver having central bore with a partially spherical engagement surface adjacent a lower opening, and a shank having a capture portion at a proximal end that is uploadable into the central bore of the receiver through the lower opening. The assembly also includes a retainer comprising a compressible, open ring-shaped body having at least a slit or missing section, a center opening, and an outer partially spherical surface configured for pivotal engagement with the partially spherical engagement surface of the receiver. The assembly further includes an insert comprising a center aperture configured to provide access to the internal drive socket for the drive tool, an upper surface configured to engage the fixation rod, and a lower surface configured to transfer the downwardly-directed force toward the capture portion of the shank to lock the assembly.

Abstract: The present invention presents various embodiments showing combination of a body, rods, platforms and pin (or wire) clamps for the relative fixation of separated bone segment. In some embodiments there is an overall linear arrangement of the assemblies. The rods are threaded and extend lengthwise throughout a substantial portion of the length of the body. Engaged with the threaded rods are one or more moveable platforms, with each moveable platform engaging one or more pin clamps. Preferably each moveable platform includes at least one tapped (generally threaded) hole and at least one smooth through-hole in each moveable platform, so that each moveable platform engages with one threaded rod via the tapped hole but can pass freely along the other threaded rod. Each body also typically bears at least one stationary platform, generally at or near one end of the device.

Abstract: A spinal facet fusion implant comprising: an elongated body having a distal end, a proximal end and a longitudinal axis extending between the distal end and the proximal end, the elongated body being characterized by a superior body surface and an inferior body surface; a superior stabilizer extending outwardly from the superior body surface, the superior stabilizer being characterized by a superior stabilizer surface; and an inferior stabilizer extending outwardly from the inferior body surface, the inferior stabilizer being characterized by an inferior stabilizer surface; wherein (i) the superior body surface and the inferior body surface are tapered relative to one another, and/or (ii) the superior stabilizer surface and the inferior stabilizer surface are tapered relative to one another.

Abstract: An expandable bi-dimensional intervertebral implant for an intervertebral fusion is provided. The implant includes a first hinge arm, a second hinge arm connected to the first hinge arm, and a translation member movable relative to the first hinge arm and the second hinge arm between an initial position and an engaged position. The second hinge arm is movable between a primary position and a secondary position relative to the first hinge arm. In the engaged position, the translation member biases the first hinge arm to move from a first position to a second position and biases the second hinge arm to move between a first position and a second position.

Abstract: An otoscope that utilizes ambient light is disclosed. The otoscope includes a fiberoptic cable(s), as opposed to batteries, to illuminate the inspection area. The otoscope made of non-metallic and/or non-ferrous materials to permit its safe use in highly flammable oxygen or magnetic environments. The otoscope includes a handle, a head coupled to the handle, and a specula coupled to the head. An eye piece coupled to the head opposite the specula. A reflective lens is positioned within the head. A fiber optic cable is positioned within the handle. The handle includes a first end positioned opposite a second end. The head is coupled to the first end. The fiber optic cable provides light to the reflective lens. The fiber optic cable extends from the front end to the second end. The reflective lens is oriented to reflect light to the specula.

Abstract: Retraction systems, assemblies, and devices for retracting an end unit are provided. A retraction assembly may be configured to move the end unit of a robot between a first state and a second state. A first signal may be received indicating a working condition. A first instruction may be generated to move the end unit from the second state to the first state. The retraction assembly may be caused to move the end unit from the second state to the first state based on receiving the first signal and the first instruction. The end unit may be held in the first state when the first signal is being received and the retraction assembly may move the end unit from the first state to the second state when the first signal is not received.

Abstract: A modular surgical retractor including a handle and a blade. The handle includes a base and a neck. The neck projects from an end of the base to a tail region. The blade includes a head section and a blade member. The head section includes opposing side walls and a floor combining to define a slot sized to receive the neck. The blade member projects from the head section. The blade is removably attached to the handle. In some embodiments, a light source, such as an LED, is disposed within the neck and arranged to emit light along a face of the blade member. Two or more additional blades are provided, each additional blade including the head section and a differently configured blade member.

Abstract: A surgical retractor assembly is provided that can assume both open and closed positions, and is easily convertible from one position to the other. The retractor assembly involves an arcuate frame member that can be engaged to an arcuate connector, which together form a generally circular or elliptical retractor frame assembly. The frame member has a groove for the insertion of one or more mobile carriages that hold retractor blade posts and allow the posts to move in multiple directions. The carriages may be locked to prevent movement in one or more directions, as well.

Abstract: An expandable interbody device for implantation within an intervertebral space is provided, together with methods and tools for use therewith. The interbody devices of the present invention include upper and lower bearing members configured to expand via an expansion mechanism configured to allow the insertion of osteoconductive materials and other structures into the interior of the interbody device before and after implantation, and before and after expansion of the interbody device. The insertion tool is configured expand the interbody device and to allow insertion of materials into the interbody device through a protected pathway.

Abstract: The present subject disclosure provides a novel design for devices and methods for straightening a curved spine by using a reduction tool to move the spine with respect to an attached bone plate.

Abstract: Described herein is an orthopedic fixation device for use in spinal surgery. The orthopedic device is a pivoting device that comprises one or more hinges. Fixation of multiple vertebrae is accomplished by fixation at the vertebral facet joints. Multiple devices may be further fixed at multiple vertebral levels with the use of a multi-level rod.

Abstract: Problem to be Solved A traverse that is percutaneously provided and a surgical instrument for percutaneously providing the transverse are provided. Solution A rod 10 is placed in each of two rod openings 113, 123 and a transverse bar 130 is inserted in two bar holes 111, 121. Set screws 140, 150 are screwed in screw holes 114, 124. The set screws 140, 150 press the transverse bar 130, thereby restraining the transverse bar 130 in the longitudinal direction. Since portions of the bar holes 111, 121 adjoin the rod openings 113, 123, the pressed transverse bar 130 contacts the rods 10 and pushes the rods 10 against the rod openings 113, 123. A protrusion 127 engages with the rods 10 to restrain hooks 110, 120 in the longitudinal direction and circumferential direction of the rods 10.