Patent classifications
A61B17/1725
Internal ankle fixation systems, foot securement and jig devices, and related methods
Embodiments described herein provide an implant for rigid intramedullary fixation of the hindfoot complex with the midfoot and/or forefoot and methods of implanting the same. Embodiments described herein can allow for the implant to be adapted to the patient based upon the extent of bone loss and instability. Embodiments herein also provide a jig system to facilitate the shaping of the foot and/or the implantation of the described internal fixation systems.
Technique for providing user guidance in surgical navigation
A technique of providing user guidance for surgical navigation is provided. A method implementation of the technique includes obtaining a predetermined spatial relationship between an optical tracking pattern and a through-hole extending through an implant, obtaining image data of the optical tracking pattern acquired by an imaging unit attached to a surgical instrument, obtaining a spatial relationship between the surgical instrument and the imaging unit at a point in time when the image data have been acquired, determining a spatial relationship between the surgical instrument and the through-hole, obtaining a plurality of predefined spatial relationships between the surgical instrument and the through-hole, and triggering simultaneous display of an indication of the plurality of predefined spatial relationships and an indication of the spatial relationship between the surgical instrument and the through-hole.
Aiming device for intramedullary nails, and related systems and methods
A device for implanting an intramedullary nail includes a base member and an adjustable member coupled together and translatable relative to each other along a direction. The device includes an insertion handle configured to carry the nail and mount to the adjustable member. A drill guide is attachable to the base member and configured to carry one or more guide sleeves for alignment with locking holes of the intramedullary nail. A first reference member extends from the base or adjustable member and has a first contact portion configured to contact an exterior location of a patient's limb. A second reference member extends from the other of the base and adjustable members and has a second contact portion configured to contact another exterior location of the limb. At least one of the first and second reference members is positionally adjustable relative to the base or adjustable member from which it extends.
DETERMINING RELATIVE 3D POSITIONS AND ORIENTATIONS BETWEEN OBJECTS IN 2D MEDICAL IMAGES
Systems and methods are provided for processing X-ray images, wherein the methods are implemented as a software program product executable on a processing unit of the systems. Generally, an X-ray image is received by the system, the X-ray image being a projection image of a first object and a second object. The first and second objects are classified and a respective 3D model of the objects is received. At the first object, a geometrical aspect like an axis or a line is determined, and at the second object, another geometrical aspect like a point is determined. Finally, a spatial relation between the first object and the second object is determined based on a 3D model of the first object, a 3D model of the second object, and the information that the point of the second object is located on the geometrical aspect of the first object.
SURGICAL INSTRUMENT CONNECTORS AND RELATED METHODS
Connectors for connecting or linking one instrument or object to one or more other instruments or objects are disclosed herein. In some embodiments, a connector can include a first arm with a first attachment feature for attaching to a first object, such as a surgical access device, and a second arm with a second attachment feature for attaching to a second object, such as a support. The connector can have an unlocked state, in which the position and orientation of the access device can be adjusted relative to the support, and a locked state in which movement of the access device relative to the support is prevented or limited. Locking the connector can also be effective to clamp or otherwise attach the connector to the access device and the support, or said attachment can be independent of the locking of the connector.
ORTHOPEDIC BONE TAP AND METHODS INCORPORATING THE SAME
An orthopedic bone tap is provided, including a rod comprising a proximal end, a medial portion, and a distal end. The orthopedic bone tap also includes a plurality of cutting threads on the distal end of the rod. The orthopedic bone tap also includes an axial compression member engaged with at least one of the proximal end and the medial portion of the rod. The axial compression member is adapted and configured to exert compression that draws a bone fragment engaged with the plurality of cutting threads distally and against another bone fragment.
BONE FIXATION SYSTEMS AND NAIL HAVING COMPRESSIVE THREADING
A nail for compressing two bone parts to treat bone fractures or osteotomies is provided. The nail has an elongate smooth portion and an elongate threaded portion that is constructed for generating axial compression along a length of the elongate threaded portion between two bone parts. The nail may also have one or more apertures for installing one or more crossing screws through the nail. An installation instrument particularly constructed to install the provided nail is provided. A first and second portion of the provided nail installation instrument may rotate relative to one another when a locking mechanism is disengaged, but are locked in position relative to one another when the locking mechanism is engaged, which enables installation of the provided nail.
Intramedullary rod with intrabody outrigger interface
Intramedullary rods, targeting devices, intramedullary rod systems, intramedullary rod kits, and methods of placing an intramedullary rod in a bone are described. An intramedullary rod comprises a head member having a first end, a second end, and a body extending between the first end of the head member and the second end of the head member. The head member is formed of a first material and defines a circumferential flange and a circumferential shoulder. The circumferential flange extends radially outwardly from the head member and the circumferential shoulder is disposed between the first end of the head member and the circumferential flange. A shaft member extends from the head member and a head extension is partially disposed over the head, member. The head extension is formed of a second material that is different than the first material and has an end contacting the circumferential shoulder of the head member.
BONE FIXATION DEVICES, SYSTEMS, AND METHODS
A femur fixation system includes an intramedullary nail that includes a first bending stiffness and a bone plate that includes a second bending stiffness and a second torsional stiffness. In the femur fixation system either at least one of the second torsional stiffness compensates for the first torsional stiffness and the first torsional stiffness is insufficient to enable the intramedullary nail to stabilize the bone fracture independently of the bone plate or the first bending stiffness compensates for the second bending stiffness and the second bending stiffness is insufficient to enable the bone plate to stabilize the bone fracture independently of the intramedullary nail.
Femoral nail and instrumentation system
An instrumentation system (100) and an intramedullary femoral nail system (1) for antegrade or retrograde implantation with laterally inserted bone screws, the system comprising a nail stem (2) having a multi-featured proximal end (3), a distal end and a central conduit (22) configured to accommodate a fastener (4), wherein the multi-featured proximal end (3) comprises a plurality of holes (20) configured to accommodate at least two bone screws (50, 52), wherein the first bone screw (50) is at an angle that is horizontal relative to the central conduit (22) and is on a coronal plane, and the second bone screw (52) is at an angle of between 120° to 130° relative to the central conduit (22).