Abstract: Medical devices for accessing the central nervous system, as well as making and using medical devices, are disclosed. An example medical device may include an expandable access port. The expandable access port may include a housing having a plurality of tines coupled thereto. A thrust washer may be disposed along the housing. An actuation member may be coupled to the housing. The actuation member may be designed to shift the plurality of tines between a first configuration and an expanded configuration.

Abstract: A subperiosteal securement kit is provided including a subperiosteal dental implant device and a drilling guide attachable thereto. The subperiosteal dental implant device has a frame engageable with the jawbone of a patient and a Fixation bore sized and shaped to receive therein a bone screw. The drilling guide has an elongated guiding channel sized shaped to receive a drill bit therein and is removably attachable to the frame of the subperiosteal dental implant device, with the guiding channel being in communication with the fixation bore when the drilling guide is attached to the frame of the subperiosteal dental implant device. A method subperiosteal dental implant device is provided to be secured to a jawbone of a patient and being engageable with a drilling guide having a threaded section.

Abstract: A method is disclosed for introducing a spinal disc implant into an intervertebral space of a subject. The subject is placed in a lateral position, and the anterior face of the spinal disc intervertebral space is accessed, between the L5 and S1 vertebrae, from an anterior and lateral retroperitoneal approach. An operative corridor to the anterior face of the spinal disc space is established by introducing a retractor instrument anterolaterally to the spinal disc space between the anterior superior iliac spine and the anterior inferior iliac spine. The damaged spinal disc contents are removed from the intervertebral space through the operative corridor, and the implant is advanced into the intervertebral space at an oblique angle and pivoted to position the implant substantially laterally within the intervertebral space. Elongated retractor and insertion instruments, as well as a modified disc implant, are also disclosed for carrying out the method.

Abstract: The present application provides external bone fixation systems. The systems include one or more pairs of bone fixation platforms in the form of rings or partial rings. The platforms may be coupled to corresponding bone segments. The pair of platforms are configured to accept a plurality of struts extending therebetween. The struts are configured to attach to the platforms via joints that provide three degrees of rotation. The struts are also configured such that their longitudinal length extending between the joints/platforms can be incrementally adjusted while attached to the platforms. The struts are further configured such that their total range of length adjustment can be increased by coupling at least one add-on component to the struts in situ. The lengths of each of the plurality of struts may be adjusted to arrange the platforms, and thereby the bone segment coupled thereto, in particular relative positions and orientations.

Abstract: An anchor can be coupleable to a bone, where the anchor includes a head, a shank, a first extension, and a second extension. The head can include a distal head portion and a proximal head portion, where the proximal head portion can be open at a proximal end of the head. The shank can extend distally from the distal head portion, where the shank including a threaded portion configured to engage the bone. The second extension can be opposing the first extension, and the second extension can include a second proximal support coupled to a second end of a first elongate portion, where a first proximal support can extend transverse to the longitudinal axis, and the first proximal support portion and the second proximal support portion can be separated in a first condition and can be engaged to transfer forces there between in a second.

Abstract: An intramedullary lengthening device includes a housing and a distraction shaft. The intramedullary lengthening device is placed within a cavity of two bone sections (either already separated or purposely separated for insertion of the device). The distraction shaft of the intramedullary lengthening device is attached to the one of the bone sections using, for example, one or more attachment screws. The housing of the intramedullary lengthening device is attached to the second bone section using, for instance, one or more attachment screws. Over the treatment period, the bone is continually distracted, creating a new separation into which osteogenesis can occur. In one embodiment, the intramedullary lengthening device includes an actuator and an extension rod, which can be attached to one other.

Abstract: A spinal construct includes a coupling member including a first mating surface engageable with an existing fastener implant. The existing fastener implant defines a cavity configured for disposal of an existing spinal rod implant. A connector is engageable with the existing fastener implant and has a rod extending therefrom. A locking member is engageable with a second mating surface of the coupling member. Systems, surgical instruments, implants and methods are disclosed.

Abstract: A polyaxial bone anchoring device includes: an anchoring element having a shaft for anchoring in a bone and a head, the head having a spherically-shaped outer surface portion; a receiving part configured to be pivotably connected to the head, the receiving part having a top end and a bottom end, a longitudinal axis extending through the top end and the bottom end, a channel transverse to the longitudinal axis for receiving a rod, and an accommodation space for accommodating the head, the accommodation space having a lower opening at the bottom end, a sleeve-like insert piece configured to be positioned around a portion of the head and to pivot in the receiving part, the insert piece having a spherically-shaped outer surface portion, wherein a lower edge of the insert piece extends past the lower opening in a direction away from the receiving part when the insert piece is seated in the receiving part in a position in which a central axis of the insert piece is coaxial with the longitudinal axis, and wherein th

Abstract: A tissue guard includes an elongated body having a proximal end and a distal end and defining a lumen therethrough. A plurality of torsion springs is included, each torsion spring having a first leg and a second leg and a spring defined therebetween. The first leg of each torsion spring is operably engaged to the distal end of the elongated body. Two or more petals extend from the distal end of the elongated body, each petal is operably engaged to the second leg of one of the torsion springs. The petals are movable between a first, compressed configuration wherein the petals are compressed relative to one another against the bias of the plurality of torsion springs to facilitate insertion of the tissue guard within an access device or natural orifice and a second, expanded configuration to facilitate engagement of the petals beneath the access device or within the natural orifical to secure the tissue guard therein.

Abstract: A root canal irrigant needle for use with a dental syringe for use in a dental procedure such as a root canal is provided. The root canal irrigant needle has a non-circular shape and has multiple irrigant outlets located along the length of the root canal irrigant needle. The location and angular orientation of the multiple irrigant outlets allow for an efficient removal of debris from the root canal.

Abstract: A transverse connector includes a cross member assembly, a first connector assembly, and a second connector assembly. The cross member assembly includes a cross member, a first ring, and a second ring. The cross member has a first end portion and a second end portion. The first ring is receivable on the first end portion of the cross member and the second ring is receivable on the second end portion of the cross member. The first and second connector assemblies are coupled to the first and second rings of the cross member assembly, respectively, to support the cross member between the first and second connector assemblies. The first and second connector assemblies are configured to selectively and releasably secure to bone anchors.

Abstract: A medical dental grinding apparatus comprises an apparatus body, wherein an air pipeline, a clamping mechanism, and a grinding mechanism are provided in the apparatus body; the air pipeline includes an air inlet pipeline, an air outlet pipeline, and a U-shaped connection pipeline; a silencer is connected to an upper port of the air outlet pipeline; a plane where the air pipeline is located is perpendicular to a plane where the clamping mechanism is located, and the grinding mechanism is provided below the air pipeline; the grinding mechanism is driven by high-pressure air in the air pipeline to operate, so that a hidden danger of electric leakage caused by using an electric apparatus in a fragile oral environment is avoided; and a steel wire is fixed by the clamping mechanism, so that the grinding safety is ensured.

Abstract: A process of bone creation between adjacent vertebrae uses an intervertebral stabilizing screw, which includes a main body with an axial through hole, a distal thread and at least one fill hole. A hollow proximal secondary body of the screw includes an external thread a travel stop. The process includes inserting the main body until the distal thread is secured to an upper vertebrae of the adjacent vertebrae such that the at least one fill hole is in inside of the disk, inserting the proximal body until reaching to the limit stop such that the proximal body is threaded inside of a pedicle and secured to a lower vertebrae of the adjacent vertebrae, and injecting a bone remodeling composition into inside of the disk through the axial hole and the at least one fill hole.

Abstract: The surgical robotic access system provides access for robotic instruments and/or actuators including the introduction, operation and withdrawal of such robotic manipulators into a body cavity without permitting the escape of pressurized fluid or gas. The surgical robotic access system also provides a multi-faceted range of movement without touching or effecting pressure on the opening in the patient's body cavity.

Abstract: Surgical instrumentation may be used to insert a spinal implant into an intradiscal space while in a non-deployed condition and then deploy the spinal implant within the intradiscal space.

Abstract: Pedicle-based intradiscal fixation devices, systems, instruments, and methods thereof. An implant for stabilizing an inferior vertebra and a superior vertebra may include a first member and a second member moveably connected to the first member. The implant may have a first, initial insertion orientation and a second, final implantation orientation different from the first, initial insertion orientation. The first member may be configured to be inserted through a pedicle of the inferior vertebra and the second member may be configured to engage bone of the superior vertebra in the second, final implantation orientation.

Abstract: A facet fusion tube assembly includes an elongated tube that defines a working channel to accept tools, instruments or materials for conducting a facet fusion. The tube includes a clip on its outer circumference that is configured to engage the outer surface of an adjacent tool or instrument used to access and engage the pedicle. A centering cap can be mounted at the proximal end of the elongated tube to align and center a working tool, such as a burring tool. An inner removable rod can extend through the tube to prevent soft tissue migration into the tube during insertion, and can be used for bone graft packing once the facet joint or other area of the spine is prepared for fusion. In use, the tube is clipped onto an adjacent instrument or tool to anchor the facet fusion tube assembly in a proper orientation relative to the facet joint.

Abstract: A device configured to provide a faster and more accurate measurement of depths of holes for placement of bone screws and fastener for bone implant fixation procedures. The device includes a combination of a bone probe for physical examination of a hole drilled in a bone and a depth gauge member for determining a depth of the hole and providing digital measurement of the depth via a display on the instrument and/or via a wireless exchange of measurement data to a remote computing device, such as a tablet or smartphone.

Abstract: The present invention provides an expandable fusion device capable of being installed inside an intervertebral disc space to maintain normal disc spacing and restore spinal stability, thereby facilitating an intervertebral fusion. In an exemplary embodiment, the present invention provides an intervertebral implant. The intervertebral implant may be configured to transition from a collapsed configuration having a first height and a first width to an expanded configuration having a second height and a second width.

Abstract: This disclosure relates generally to surgical instruments used to deliver locking or set screws to secure a rod or spinal fixation element relative to an implanted bone anchor or other spinal fixation construct during spine surgery. In one embodiment, the inserter instrument can include an inner driver shaft, a ratcheted outer sleeve, and a handle configured to receive the shafts therein. The inner driver shaft can receive a plurality of set screws on a distal end thereof. A side latch, pawl, or button can engage with the ratcheted outer sleeve to facilitate step-wise advancement of the sleeve relative to the driver shaft for set screw delivery. Step-wise advancement can be controlled using another button that causes movement of the side latch.