摘要:
Method for the production of a temporomandibular joint endoprosthesis, skull prosthesis or body part prosthesis, in which, as first step, an image of the prosthesis to be produced is created, subsequently by a computerized machining process, a size-adapted prosthetic blank is made from a ceramic blank, using said image and in a downstream thermal treatment the prosthetic blank is transformed into the intended temporomandibular joint endoprosthesis, skull prosthesis or body part prosthesis and temporomandibular joint endoprosthesis.
摘要:
Orthopedic implants produced by additive manufacture, followed by refinement of exterior and interior surfaces trough mechanical erosion, chemical erosion, or a combination of mechanical and chemical erosion. Surface refinement removes debris, and also produces bone-growth enhancing micro-scale and nano-scale structures.
摘要:
Prosthetic element for bone extremities such as fingers or toes, or teeth, comprising a trabecular part (20, 40, 120) and two end parts or stumps (12, 34, 112; 15, 39, 115).
摘要:
A hip prosthesis includes an acetabular cup and a femoral component comprising a head and a stem, wherein the stem comprises a truss structure, the truss structure comprising a space truss comprising a plurality of planar truss units having a plurality of struts joined at nodes, wherein the web structure is configured to interface with bone tissue.
摘要:
An implant or endoprosthesis suitable to be implanted in human or animal tissue includes two (or more than two) parts to be joined in situ. Each one of the parts includes a joining location, the two joining locations facing each other when the device parts are positioned for being joined together, wherein one of the joining locations includes a material which is liquefiable by mechanical vibration and the other one of the joining locations includes a material which is not liquefiable by mechanical vibration and a structure (e.g. undercut cavities or protrusions) suitable for forming a positive fit connection with the liquefiable material. The joining process is effected by pressing the two device parts against each other and by applying ultrasonic vibration to one of the device parts when the two parts are positioned relative to each other such that the two joining locations are in contact with each other.
摘要:
A joint prosthesis system is suitable for cementless fixation. The system has two metal implant components and a bearing. One of the metal implant components has an articulation surface for articulation with the bearing. The other metal implant component has a mounting surface for supporting the bearing. One of the metal implant components includes a solid metal portion and a porous metal portion. The porous metal portion has surfaces with different characteristics, such as roughness, to improve bone fixation, ease removal of the implant component in a revision surgery, reduce soft tissue irritation, improve the strength of a sintered bond between the solid and porous metal portions, or reduce or eliminate the possibility of blood traveling through the porous metal portion into the joint space. A method of making the joint prosthesis is also disclosed. The invention may also be applied to discrete porous metal implant components, such as augment.
摘要:
An implant or endoprosthesis suitable to be implanted in human or animal tissue includes two (or more than two) parts to be joined in situ. Each one of the parts includes a joining location, the two joining locations facing each other when the device parts are positioned for being joined together, wherein one of the joining locations includes a material which is liquefiable by mechanical vibration and the other one of the joining locations includes a material which is not liquefiable by mechanical vibration and a structure (e.g. undercut cavities or protrusions) suitable for forming a positive fit connection with the liquefiable material. The joining process is effected by pressing the two device parts against each other and by applying ultrasonic vibration to one of the device parts when the two parts are positioned relative to each other such that the two joining locations are in contact with each other.
摘要:
Devices and methods are provided for immobilizing facet joints of the vertebral column. Embodiments of the invention provide an implant that is inserted in a facet joint from which cartilage has been removed, and which retains the approximate original spacing of the facets in the joint. A retaining arrangement, such as an adhesive, a threaded fastener, or a screw is then used to secure the implant in the joint.
摘要:
An implant includes a body having a cylindrical portion extending from a first end to a second end, a first nub extending from the first end, and a second nub extending from the second end. The body includes an inner layer, a middle layer, and an outer layer. The inner layer has a first length extending from a tip of the first nub to a tip of the second nub, and has a first central axis collinear with a central longitudinal axis of the implant. The outer layer has a second length extending from the first end to the second end, has a second central axis collinear with the central longitudinal axis, and provides an outer surface of the implant. The middle layer comprises a porous material disposed between the inner layer and the outer layer. The inner layer and at least one portion of the middle layer provide the two nubs.
摘要:
A prosthetic joint includes: (a) a first member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant first contact surface having a protruding rim; (b) a second member comprising rigid material and having a perimeter flange defined by an undercut groove, the flange defining a wear-resistant, second contact surface having a protruding rim; and (c) a third member comprising rigid material positioned between the first and second members, the third member defining opposed wear-resistant third and fourth contact surfaces; (d) wherein the first and second contact surfaces bear against the third and fourth contact surfaces, to transfer loads through the member, while allowing pivoting motion between the first and second members; (e) wherein the flanges can deform elastically such that the first and second contact surfaces conform to the third and fourth contact surfaces.