Abstract: A bone plate system includes a plate member, a disk, and a cover member. The plate member having a through-hole extending through top and bottom sides of the plate member. The disk is receivable in the through-hole to be rotatably supported in the plate member about an axis of rotation extending from the top side to the bottom side. The disk includes a slot configured to receive a bone anchor therethrough. The slot has a non-circular shape when viewed along the axis of rotation to allow a guided displacement of the bone plate in a plane perpendicular to the axis of rotation. The cover member is configured to cover the bone anchor and the disk when the disk is received in the through-hole of the plate member.

Abstract: A sheath for producing a fully sealed access to the interior of a vessel of an animal or human body comprises a base sheath having a tubular body defining a pass-through channel. The base sheath is adapted to be inserted into the vessel through a vessel aperture. A wall of the tubular body of the base sheath has a through channel. This channel extends in the wall from the distal end towards the proximal end. The channel can be present separately from the pass-through channel of the base sheath or can form a sideways extension of the pass-through channel, at least at the distal end. Such through channel is adapted to conduct blood from the vessel to the proximal end of the sheath when the sheath has been inserted into a vessel.

Abstract: An expandable interbody device for use in the spine is configured to fit through Kambin's Triangle. The expandable interbody device can include a body defining a front end, a rear end and a plurality of sidewalls spanning between the front and rear ends, an expandable member pivotally attached to the body such that the expandable member pivots outwardly from one of the plurality of sidewalls and a screw threaded into the body through the rear end thereof. The expandable member defines an actuator flange that projects into the body. The screw abuts the actuator flange such that contracting the screw into the body causes the expandable member to pivot outwardly from the body.

Abstract: A fixation device is disclosed for the fixation of proximal humerus fractures includes an implantable humerus plate having a proximal portion adapted to be positioned at a head and medial calcar of the humerus, a distal portion adapted to be positioned along a shaft of the humerus, and a plurality of calcar openings provided through the proximal portion adapted to receive calcar fasteners that extend into the medial calcar. The calcar fasteners are grouped into a rafted configuration and the tips of each fastener are positioned into the calcar region so that torsional forces bearing upon the calcar regions are distributed into the rafted fastener support, thereby avoiding varus collapse of the humerus head after fixation of the fracture.

Abstract: A medical positioning bracket is described that provides users with the ability to attach and secure multiple bone tunnel drill guides into a single working unit. Users can manipulate each drill guide independently and lock the drill guides at desired locations relative to one another to achieve precise bone tunnel angles and locations.

Abstract: An intervertebral implant for being implanted between adjacent vertebrae is provided. The implant includes a generally elongate implant body having a length extending between opposite longitudinal ends thereof, a superior face and an inferior face. The superior face and inferior face include cortical teeth adjacent to the implant body longitudinal ends. Additionally, the superior and inferior faces include longitudinally central teeth intermediate the cortical teeth and have bone engaging ends. The central teeth have a sharper configuration than that of the cortical teeth bone engaging ends for biting into the softer central bone material of the vertebrae. The cortical teeth are arranged in a first density per unit area and the central teeth are arranged in a second density per unit area that is less than the first density.

Abstract: Disclosed herein is an implant for bone fixation comprising an elongated member configured to be wound around bone parts that are to be fixed, an engagement member coupled to the elongated member and configured to engage a portion of the elongated member so as to secure the implant in a loop around the bone parts, and a fastening member arranged between and coupled to the elongated member and the engagement member. The fastening member comprises at least two separate pieces each comprising one opening for receiving a bone fastener, wherein the separate pieces are coupled to each other by a material having a lower material strength than a material from which the separate pieces are made.

Abstract: Instruments and surgical techniques may be used to correct a bone deformity, such as a bunion in which a metatarsal is misaligned with respect to a medial cuneiform. In some examples, a bone cutting guide is utilized to cut an end of the metatarsal and/or an end of the medial cuneiform to facilitate realignment of the bones. The cutting guide can have a pivotable cut guide surface along which a cutting instrument is translated to provide a precise bone cut. In some applications, after suitably preparing and aligning the bones, the bones are compressed together using a fixation pin. The fixation pin can be driven through one of the bones, into the second bone, and then further driven to compress the bones together.

Abstract: An operating instrument includes a housing, a chassis, a first and second drive shaft, a gear assembly, a switch assembly, and a bearing lock assembly. The first and second drive shafts each has a first portion supported by the chassis in the housing and a second portion extending out of the housing. The gear assembly includes a first gear member fixedly received on the first portion of the first drive shaft and a second gear member slidably received on the first portion of the second drive shaft.

Abstract: A prosthetic implant for engagement between first and second vertebrae. The implant includes a first plate configured for attachment to the first vertebrae and defining a first interbody connection member and a second plate configured for attachment to the second vertebrae and defining a second interbody connection member. An interbody component includes a body with a first end defining a first plate connection member configured for connection to the first interbody connection member and a second end defining a second plate connection member configured for connection to the second interbody connection member. A method of inserting the implant is also provided.

Abstract: A load sharing bone plate has a plurality of directional apertures configured to effectively support and share the load with a fractured bone to promote healing. A load sharing bone plate may have a body portion that is thinner and be configured to be secured with smaller fasteners than conventional bone plates. A load sharing bone plate has a plurality of directional apertures, configured to direct a fastener is a specific orientation, such as in an oblique angle to the length and/or in an oblique angle to the width of the bone plate. A load sharing bone plate may be configured with a load sharing extension on at least one end that is configured to reduce stress concentration at the end of the bone plate. A load sharing extension may have a tapered thickness and/or width from the body portion to the extended end.

Abstract: A surgical tool with a housing, and a cutter support shaft operably connected to a motor to effect rotation of the shaft with a drive transmission configured between the motor and the shaft to effect oscillating rotary movement of the shaft and cutter is disclosed.

Abstract: Devices and methods for locking one or more bone screws to a fixation plate. A cam-style locking feature may be disposed in the fixation plate such that, when the locking feature is in a first position, the bone screw is able to traverse an opening in the fixation plate and engage adjacent bone; and when the locking feature is rotated into a second position, an interference between the locking feature and bone screw causes the bone screw to be firmly secured to the fixation plate.

Abstract: A system for compressing a fracture can include a first bone plate having a first proximal end and a first distal end, and a second bone plate having a second proximal end and a second distal end. The second bone plate can be spaced apart from the first bone plate. The system can include an expansion member coupled to the second proximal end of the second bone plate. The movement of the expansion member relative to the second bone plate can cause the first distal end of the first bone plate and the second distal end of the second bone plate to move toward each other to compress the fracture.

Abstract: An inflatable and implantable balloon for treatment of degenerative disc disease, bones, lesions, spinal deformities and spinal motion segment instabilities. The balloon is comprised of adjustable and expandable volumes. Further disclosed are methods of forming, inserting, expanding, and implanting the multi-volume balloon for proper placement and stabilization of the spinal lesion or disease. Still further disclosed are kits for aligning and stabilizing elements of the spine.

Abstract: A bone plate having at least one variable angle locking hole is described. The variable angle locking hole allows a bone anchor having a threaded head to be driven into underlying bone while oriented at an angle with respect to a central hole axis of the hole that is within a range of angles at which the head is configured to threadedly mate with the at least one thread of the bone plate. Accordingly, the bone anchor can be driven into the underlying bone until the threaded head threadedly purchases with the bone plate inside the variable angle locking hole.

Abstract: A debris collection device includes first and second members that are moveable relative to each other between first and second configurations. In the second configuration, the first and second members interface with each other and define a restraint opening that is configured to receive an elongate element, such as a spinal rod. The first and second members while in the second configuration define a guide opening that intersects the restraint opening. Such guide opening is configured to receive a cutting tool, such as a conical burr, drill bit, mill or saw. The first and second members have walls that, when in the second configuration, collectively define an interior space that has a volume sufficient to collect debris created by cutting the elongate element through the guide opening. Methods of utilizing the debris collection device allow for cutting of a spinal rod or the like in situ while capture debris caused by the cutting procedure.

Abstract: A surgical adaptor comprises a first member is attachable to a first surgical instrument having a projection that defines an axis. A second member is attachable to a second surgical instrument such that the second surgical instrument is movable in at least two degrees of freedom relative to the axis. Surgical systems, instruments and methods are disclosed.

Abstract: A technique for accessing extra articular lesions or abnormalities or intra osseous lesions or abnormalities or bone marrow lesions or all has the step of positioning the localizing pinning member onto cartilage or subchondral bone to define a virtual pathway through the cartilage or subchondral bone towards or into or through the lesion or abnormality or a desired target to create the virtual pathway utilizing an intra articular localizing pinning member to determine a location of the lesion or abnormality wherein the utilization of the localizing pinning member includes the step to locate or stabilize or both and thereafter using the virtual pathway to create an entry access.

Abstract: An element with a shank (1) and a holding element (2) connected to it for connecting to a rod (100) is provided, wherein the holding element (2) has a recess (3) having a U-shaped cross-section for receiving the rod (100) with two legs (4, 5) open at one end (6) and an inner thread (7) on the open legs (4, 5) and a locking element (9) with an outer thread (8) which cooperates with the inner thread of the legs, wherein the inner thread (7) of the legs and the outer thread (8) of the locking element are constructed with a flat thread in which the two flanks (7a, 7b; 8a, 8b)) enclose an angle of 90° in each case with the screw axis (S, M). This prevents splaying of the open legs when the locking element is screwed in. The flat thread is easy to produce.