Abstract:
An apparatus is provided for fusing bones of the human body. The apparatus comprises a bone plate which generally is a member having one or more fixation apertures, configured to receive fasteners, and an insert aperture. The bone plate comprises a semi-rigid material, such as a biocompatible metal or Polyetheretherketone (PEEK), possessing a tensile strength suitable for immobilizing bones. A convertible insert is configured to be retained within the insert aperture. The convertible insert is configured to optimally direct a fastener towards a chosen point of purchase for fixating or compressing bones. In some embodiments, the insert is configured to direct a fastener at an oblique angle relative to a plane of the fusion plate. In some embodiments, the insert is configured to direct a fastener at a substantially right angle relative to the fusion plate.
Abstract:
Bone compression systems for internal fixation of bone portions include one or more spring washers having ultra high load capacity and ultra low displacement to close diminution gaps that develop in a discontinuity between the bone portions after fixation. The spring washers, individually or in stacks of up to four, provide installation loads between 1500 N and 4000 N. After closing diminution gaps, the spring washers or stacks provide sustained loads between 1000 N and 3000 N which stabilize the bone portions sufficiently to permit early load bearing. The sustained loads correspond to sustained average local bone stress just below the bone growth trigger threshold stress. The additional loads of early load bearing will create average local bone stress above the bone growth trigger threshold. By bone stress repeatedly passing through the bone growth trigger threshold stress, bone healing is optimized.
Abstract:
Die vorliegende Erfindung betrifft eine Fixierungsvorrichtung für Knochenfrakturen mit wenigstens zwei Spannelementen (1, 1', 1"), wenigstens zwei Befestigungsmitteln (7), sowie wenigstens zwei Hülsenelementen (5). Ein jedes der Spannelemente (1, 1', 1") hat einen Konturkörper (6) und weist, an in Längsrichtung voneinander beabstandeten Enden, Aufnahmen (2) auf, die Hülsenelemente (5) und/oder Befestigungselemente (7) umschließen, so dass durch eine Verknüpfung mehrerer Spannelemente (1, 1', 1"), Hülsenelemente (5) und/oder Befestigungsmittel (7) diese zu einer Kette oder dergleichen angeordnet werden können. Ein jedes Spannelement (1, 1', 1") ist spiegelsymmetrisch zur Längsrichtung ausgebildet, wobei sich die Aufnahmen (2) ausgehend von einer gedachten Mittellinie eines jeden Spannelements (1, 1', 1") in Längsrichtung (L) jeweils nach oben oder unten zur Außenkante des Konturkörpers (6) des Spannelements (1, 1', 1") in Höhenrichtung (H) erstrecken und an ihrer der gedachten Mittellinie zugewandten Kontaktfläche eine Verzahnung (3) aufweisen, wobei bei der Verbindung einzelner Spannelemente (1, 1', 1") miteinander diese, durch das miteinander in Eingriff bringen der an den einander zugewandten Kontaktflächen der Aufnahmen (2) ausgebildeten Verzahnung (3), in eine vorbestimmte Winkellage zueinander ausrichtbar sind.
Abstract:
A modular bone fixation linkage includes a plurality of interconnected links that can angulate with respect to an adjacent one of the links about at least one axis, such as three axes. The links can further include fixation holes that are configured to receive bone anchors that secure the links to an underlying anatomical structure.
Abstract:
The present disclosure relates to an insert sleeve (19) designed for being inserted into a through hole (17) of an implant (11), comprising a body (21) with a through hole (23) defining an axial direction (29) for receiving a bone anchoring element (25), in particular a bone screw, said body (21) being made of a material having a first modulus of elasticity and including multiple recesses (27) arranged in circumferential direction around said through hole (23) of said insert sleeve (19) for reducing a stiffness of said insert sleeve (19) in a direction transverse (31, 33) to said axial direction (29). At least one of said recesses (27) is filled with a filler material (41) having a second modulus of elasticity different from said first modulus of elasticity.
Abstract:
The present invention relates to stable fixation of spine segments, allowing for fusion in, e.g., skeletally mature patients. More particularly, the invention relates to a bone fixation device that can be affixed to vertebrae of a spine to provide reduction (or enlargement) capabilities and allow for fixation in the treatment of various conditions, including, e..g., spondyloslisthesis, degenerative disc disease, fracture, dislocation, spinal tumor, failed previous fusion, and the like, in the spine. The invention also relates to a method for delivering and implanting the bone fixation device.
Abstract:
Plate-based fixation system having dual anchors. The plate can include cams. The plates can have a banana-shape. The plates can be adapted to receive a polyaxial bone screw. The plates can be jointed so as to be height-adjustable.
Abstract:
Eine Befestigungsvorrichtung für chirurgische Haltesysteme weist ein Halteelement (1) und ein Befestigungselement (2) mit einem Kugelgelenk auf, welches durch Verdrehen eines Exzenterringes (12) im Halteelement (1) verriegelt werden kann. Es definieren die Gelenkpfanne (8) eine Gelenkinnenfläche (15) des Kugelgelenkes und der Gelenkkopf (3) eine Gelenkaussenffäche (9) des Kugelgelenkes. Wenn der Exzenter-Ring (12) den Gelenkkopf (3) bezüglich der Gelenkpfanne (8) verklemmt, ist durch die Form von mindestens einem der drei Elemente Gelenkpfanne (8), Gelenkkopf (3) und Exzenter-Ring ( 12) die Lage von drei Kontaktstellen des Kugelgelenkes, weiche das Kugelgelenk arretieren, eindeutig definiert.
Abstract:
An orthopedic plate comprising, a frame portion and a bearing rotatably coupled with the frame portion, wherein the bearing defines an opening configured to receive a fastener for fastening the orthopedic plate to a body, wherein the bearing includes an outer surface that is eccentric to the opening such that a position of the opening with respect to the frame portion is adjustable as the bearing rotates.
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.