Abstract:
A composite interbody device includes superior and inferior endplates with a plastic core molded therebetween. The core includes one or more features for permitting bone growth through the core. Each endplate includes a bone interface side coated with hydroxyapatite, for promoting bone on-growth. Pores in the bone interface sides permit bone in-growth. Core interface sides of the endplates include relatively larger pores for accepting molten material from the core, for example during injection molding, to enhance bonding of the endplates with the core. Each endplate has a central barrier layer for preventing the molten core material from extruding through the core interface pores into the bone interface pores, reserving the bone interface pores for bone in-growth. A method of manufacturing the composite interbody device is also disclosed.
Abstract:
Ein Verbundkörper (2) aus Partikeln einer magnesiumhaltigen Phase (4) und aus Partikeln (3) einer Titanlegierung wird zusammen mit einer Mischung (5) bestehend aus Titanhydrid und einem Binder auf die Oberfläche eines Vollkörper-Implantats (1) aufgebracht und anschliessend unter Vakuum und/oder Schutzgas erhitzt. Dabei kommt es nach Entfernung des Binders sowie nach Dissoziation des Titanhydrids zu Titan an statistischen Kontaktstellen (13) der Partikel untereinander und Kontakten zwischen ihnen und der Oberfläche zu Diffusionsverschweissungen und gleichzeitig an den statistischen Kontaktstellen zu Verschmelzungen oder Verschweissungen der magnesiumhaltigen Partikel untereinander, sodass zwei ineinandergreifende titanhaltige und magnesiumhaltige Phasen entstehen. Nach Implantation und im Kontakt mit Körperflüssigkeit kommt es zu einer Auflösung der magnesiumhaltigen Phase, wobei die Freisetzung von Magnesiumionen zur Ausfällung von Calciumphosphaten führt, welche eine osteoinduktive Wirkung ausüben, wodurch peripheres Knochengewebe in die vorher von der magnesiumhaltigen Phase gefüllten Hohlräume augmentiert.
Abstract:
A biocompatible medical component comprising a hybrid fabric comprising i. at least one type of second fibre, and ii. at least one type of first fibre, and a structural component, wherein the Young's modulus of said second fibre is at least 125% of the Young's modulus of the first fiber.
Abstract:
Prosthetic element comprising a cap (11) made of metal material. At least part of said cap (11) consists of a lattice (12) that makes a plurality of open and intercommunicating cavities (18).
Abstract:
A bone-repair composite includes a core and a sheath. The core is a first primary unit including a combination of a first set of yarns coated with an apatite calcium phosphate mineral layer. The first set of yarns being made from a first group of one ore more polymers. The sheath is a second primary unit which can be either polymer or including a combination of a second set of yarns or one or more polymer coatings. The second set of yarns being made from a second group of one or more polymers, wherein the composite is made by covering the core with the sheath, and the composite is compression molded to allow the sheath to bond to the core. The bone-repair composite has a bending modulus comparable to that of a mammalian bone, such that the ratio of the core to the sheath is provided to maximize the mechanical strength of the bone-repair composite to mimic the mammalian bone. Furthermore, a method for making a bone repair synthetic composite comprising the steps of: treating a polymer fiber with a surface modifying chemical, wherein the polymer fiber is a natural polymer or a synthetic polymer; coating the polymer fiber with a mineral layer; and forming a primary structure with at least one of the mineral coated polymers or at least one of the polymer fibers.
Abstract:
Um bei einer Augmentationskomponente (1) zur Auffüllung von Knochendefekten mit einer metallischen, porösen Struktur einerseits eine hohe Festigkeit der Augmentationskomponente (1) zu erhalten und andererseits das Einwachsen von Knochenmaterial in das gesamte Volumen der Augmentationskomponente (1) zu fördern, wird vorgeschlagen, dass die Augmentationskomponente (1) aus einem dreidimensionalen Gerüst aus miteinander verbundenen Stegen (3) aufgebaut ist, die untereinander verbundene kleinere Hohlräume (4) mit einer Größe im Bereich von 0,5 mm bis 6 mm einerseits, vorzugsweise von 0,5 mm bis 1 mm, und große Hohlräume (6) mit einer Größe im Bereich von 6 mm bis 20 mm andererseits, vorzugsweise von 6 mm bis 10 mm, ausbilden.
Abstract:
A bone-repair composite includes a core and a sheath. The core is a first primary unit including a combination of a first set of yarns coated with an apatite calcium phosphate mineral layer. The first set of yarns being made from a first group of one ore more polymers. The sheath is a second primary unit which can be either polymer or including a combination of a second set of yarns or one or more polymer coatings. The second set of yarns being made from a second group of one or more polymers, wherein the composite is made by covering the core with the sheath, and the composite is compression molded to allow the sheath to bond to the core. The bone-repair composite has a bending modulus comparable to that of a mammalian bone, such that the ratio of the core to the sheath is provided to maximize the mechanical strength of the bone-repair composite to mimic the mammalian bone. Furthermore, a method for making a bone repair synthetic composite comprising the steps of: treating a polymer fiber with a surface modifying chemical, wherein the polymer fiber is a natural polymer or a synthetic polymer; coating the polymer fiber with a mineral layer; and forming a primary structure with at least one of the mineral coated polymers or at least one of the polymer fibers.
Abstract:
The present invention provides an implant for use in fusing adjacent bony structures. The implant comprises a plurality of bone pieces formed into at least one load bearing layer.
Abstract:
Methods and devices are provided for regenerating a meniscus. The devices (20) comprise a layer (22) of toughened naturally occurring extracellular matrix. The devices (20) may, optionally, further comprise a biologic material (60) to provide a framework for meniscus regeneration. The methods comprise the steps of removing a portion of a meniscus to provide a space (16), and inserting a device (20) comprising a layer (22) of toughened naturally occurring extracellular matrix into the space.
Abstract:
A method for the repair of a cartilaginous tissue defect and a cartilage repair device (20, 210) are disclosed. In the method for the repair of a cartilaginous tissue defect (14), a device (20, 210) comprising a synthetic polymer (230) is implanted into a space (16) subsequent to removal of the defect (14), and a biological lubricant is administered at the site of the defect (14). The device (20, 210) comprises a synthetic polymer (230) and a biological lubricant (234).