Abstract: The invention encompasses a bone screw for use in the human body including a shaft having a threaded region along at least a portion of its length and a screw head including a locking mechanism to secure the screw, for example to a bone plate. In certain embodiments, the thread has an outer diameter dimensioned to pass through the screw hole in the implant. The screw head is configured to cooperatively engage at least a portion of the screw hole of the implant so as to prevent the screw from coming out of the implant and avoided soft tissue damage and other complications associated with unintended screw removal.

Abstract: Described herein is an anti-skid surgical instrument for use in preparing holes in bone tissue. The disclosed surgical instrument provides the ability to prepare a precise hole in bone tissue during surgery (e.g., spinal surgeries and pedicle screw placement, intramedullary screw placement). The disclosed surgical instrument accomplishes precise hole placement regardless of whether the angle between the drill axis and surface of the bone tissue is perpendicular. The disclosed technology includes a flat drilling surface which is perpendicular to the surface of the body of the surgical instrument. This reduces the likelihood of the surgical instrument skidding on the surface of the bone tissue and thereby increases the precision of the hole.

Abstract: The disclosure relates to medical devices and methods of manufacturing medical devices. An orthopedic screw includes a shaft having a proximal end, a distal end, a body extending between the proximal end and the distal end, and a longitudinal axis. A distal thread on an external surface of the shaft extends around the longitudinal axis. A head portion includes a series of cutting teeth that lie on a plane that is perpendicular to the longitudinal axis of the shaft. A distal tip portion defines a cutting edge.

Abstract: An intervertebral implant comprising a body formed as an open truss structure, the body having a generally annular shape with a superior surface, an inferior surface, and a perimeter surface extending around an outer periphery of the body. The body has a central portion and a peripheral portion, the peripheral portion extending inward from the perimeter surface toward the central portion. The peripheral portion includes a first set of trusses having a first density of trusses, and the central portion includes a second set of trusses having a second density of trusses. The first density of trusses in the peripheral portion is greater than the second density of trusses in the central portion. The first set of trusses includes a first strut and a first node, and the second set of trusses includes a second strut, wherein the first node connects the first strut with the second strut.

Abstract: A minimally invasive bone fracture positioning device includes a sleeve, a movable unit, and a support. The sleeve includes an alignment portion located on a longitudinal axis of the sleeve. The movable unit includes a positioning portion. The positioning portion is located on the longitudinal axis and is spaced from the alignment portion. The movable unit is mounted in a radial direction of the sleeve. The movable unit is slideable relative to the sleeve along the longitudinal axis. A support is coupled to the sleeve and the movable unit. The movable unit is spaced from the sleeve by the support.

Abstract: The tool and surgical kit are configured to facilitate in-situ reattachment of a screw extender to screw is provided. The surgical kit includes a screw extender, a screw assembly and a tool. The screw extender has a channel extending from a proximal end to a distal end of the screw extender. The screw assembly includes a screw and a set screw. The screw includes a threaded shaft and a head having a pair of sidewalls spaced apart from each. The interior surface of the sidewalls is threaded. The tool includes a first and a second removable shaft, the distal ends of which are configured to respectively engage the screw and the set screw. The tool includes a main shaft, a handle and a hollow housing. The main shaft is configured to fit through the channel, and the hollow housing is configured to receive the screw extender housing.

Abstract: A bone fusion implant for fusing a first bone region to a second bone region of a mammalian bone includes a first fixing region having multiple securing means receiving holes for attaching to the first bone and a second fixing region which is connected to the first fixing region and has multiple securing means receiving holes for attaching to the second bone region, wherein a cutting tool guiding contour which specifies a severing line is formed between the first and the second fixing region. A method for the individualized production of such a bone fusion implant includes recording an actual 3D model of the mammalian bone implant in a first data set, drafting a target 3D model, and producing the bone fusion implant by way of the target 3D model.

Abstract: Systems and methods for positioning a cut guide using navigation-based techniques are discussed. For example, a system for use in an orthopedic surgery on a target bone can comprise a cut guide adjustably positionable onto the target bone via two or more coupling receptacles created on the target bone. The coupling receptacles can include one or more guide members and a plurality of landing members. The system also includes an input interface that can receive a target bone representation, and a model receiver module that can receive a generic post-coupling bone model. The target bone representation can include a data set representing two or more landing sites of the target bone, and the generic post-coupling bone model can include a data set representing a bone having two or more coupling receptacles each sized, shaped or otherwise configured to receive and secure the respective coupling feature of the landing members.

Abstract: The present invention relates to a coupler assembly for a tibial cutting guide, the assembly including an aligning coupler having a first side coupled to an aligning member by sliding and a second side slid in an adaptor groove of the tibial cutting guide, and a handle slidably coupled to the aligning coupler. More particularly, the present invention relates to a coupler assembly for a tibial cutting guide, the assembly enabling an aligner and a cutting guide to be easily coupled and decoupled through an adaptor without specific operation because when the handle is slid to the cutting guide, the handle is fixed to the cutting guide, and the cutting guide and the adaptor are locked, and when the handle is slid in the opposite direction from the cutting guide, the handle is separated from the cutting guide, and the cutting guide and the adaptor are unlocked.

Abstract: Provided is a semi-cylindrical osteotomy device including: a guide portion where a tibia accommodating space in which a tibia is accommodated is formed; a cutter portion moving in the tibia accommodating space and cutting the tibia while moving along an inner circumferential surface of the guide portion; and a driving unit driving the cutter portion. According to the semi-cylindrical osteotomy device, stability of a surgery is increased by inserting the guide portion by approaching a side surface of the tibia to minimize an exposed portion of a bone. Also, a wire saw moves along a slit of the guide portion, and thus a cut bone surface of a semi-cylindrical shape is easily and quickly formed.

Abstract: A system for stabilizing a bone structure. The system includes a guide device and an overlying delivery tube. A distal portion of the guide device is positionable within the bone structure and operable in a straight configuration and a curved configuration relative to a longitudinal axis. The overlying delivery tube comprises flexible polymeric material. The flexible polymeric material facilitates the delivery tube assuming a curve within the bone structure relative to the longitudinal axis when the guide device is in the curved configuration. The flexible polymeric material maintains a patent lumen along the curve when the guide device is withdrawn. The system may include an access cannula configured to penetrate the bone structure, and/or an expandable member insertable through the patent lumen along the curve. A delivery device may deliver curable material through the patent lumen along the curve to a target site within the bone structure.

Abstract: Modular extractor device for removing bone cement from a bone cavity (C), including an elongated body with an axis of symmetry (X-X), a proximal end, arranged during use at the opening of the bone cavity (C), and a distal end, arranged during use at the innermost part of the bone cavity (C). The elongated body is partially hollow and is adapted to be inserted in said bone cavity (C) filled with bone cement. The elongated body includes a plurality of rigid elements coaxial to the axis (X-X) of said elongated body, partially hollow and anchored together. At least two adjacent rigid elements include a first main section, a second main section and a flange. A main section of at least one rigid element is inserted and held in position in a main section of the other rigid element of the at least two rigid elements.

Abstract: In one embodiment, a cutting guide is disclosed for use in a surgical procedure to removed damaged tissue from a patient and form a recipient site configured and dimensioned to receive a donor graft. The cutting guide includes a first arm that abuts a section of the damaged tissue to be removed, and a second arm including a hole and a slot that receives a cutting implement, the first arm and the slot defining a distance therebetween corresponding to a desired dimension of the recipient site. In another embodiment, a cutting guide is disclosed for use in forming a donor graft from donor tissue. The cutting guide includes a body that receives the donor tissue, and a shaping member that is rotatably secured to the body. The shaping member includes at least one vane that shapes the donor tissue so as to form the donor graft.

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 patella fracture fixation system includes a peripheral rim bone plate that is configured to be implanted along a parapatellar lateral approach. The bone plate can configured to minimize disruption of blood supply to the patella. The bone plate can be augmented with a Krackow suture pattern to assist in stabilization of a comminuted inferior pole.

Abstract: A receiving part for receiving a rod for coupling the rod to a bone anchoring element, the receiving part including: a receiving part body having a channel for receiving a rod and defining an accommodation space for accommodating a head of a bone anchoring element, the accommodation space having an opening for inserting the head; and a pressure element at least partially in the accommodation space, the pressure element including a first portion having a recess to receive the rod, and a second portion having a flexible portion to clamp the head, wherein the pressure element is moveable along a longitudinal axis of the receiving part body from an inserting position to insert the head, to a pre-locking position to clamp the head in the receiving part by a pre-stress exerted by the pressure element, to a locking position to lock the head in the receiving part.

Abstract: A modular bone plate includes a first plate member including a first connection portion having a first hole and a second plate member including a second connection portion having a second hole. The first plate member is connectable to the second plate member when the first plate member and the second plate member are arranged such that the first hole and the second hole overlap. The modular bone plate also includes a connector member that is insertable into the first hole and the second hole when the first hole and the second hole overlap such as to connect the first plate member and the second plate member. The connector member includes a passage that is configured to accommodate a portion of a bone anchor therein.

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.