摘要:
An implant device used to replace and restore the function of the knee meniscus in a human. The compliant, yet resilient device is comprised of a biocompatible, non-degradable three-dimensional body comprised of at least a central body, a second structure, a third structure, and a coating. The device is concentrically aligned wherein the second structure is adjoined to the central body wherein the third structure is adjoined on the central body opposite of the second structure. The third structure further features a first and a second pulling element which is coupled to the central body and forms the outer periphery and major circumference of the device. The device is comprised of multiple components which provide tensile strength, compressive resilience, and attachment mechanisms for replacing the meniscus. Each structure is comprised of multiple surfaces which are further reinforced, separated, and connected by an individual plurality of vertical elements. The implantable device further features a surface coating on the surface of the central body.
摘要:
A membrane type scaffold for guided bone regeneration (GBR), and a method of manufacturing the same are provided. The membrane type scaffold according to the present invention includes: a first layer disposed to come into contact with bone tissue in a body and including at least one fiber layer arranged in parallel at first intervals; and a second layer laminated on the first layer, disposed to come into contact with soft tissue in the body, and including at least one fiber layer arranged in parallel at second intervals. The first interval is larger than the second interval.
摘要:
Prosthetic intervertebral discs, systems including such prosthetic intervertebral discs, and methods for using the same are described. The subject prosthetic discs include upper and lower endplates separated by a compressible core member. The subject prosthetic discs exhibit stiffness in the vertical direction, torsional stiffness, bending stiffness in the saggital plane, and bending stiffness in the front plane, where the degree of these features can be controlled independently by adjusting the components, construction, and other features of the discs. Different variants are provided of implant comprising exactly two prosthetic intervertebral disc, each comprising two endplates and a compressible core.
摘要:
An implant for use in spinal surgery comprises a resilient element having an inflatable cavity. It is formed of a biologically compatible material and is arranged for placement between end plates of adjacent vertebra. The implant may also include a wound disc replacement element. A method of performing spinal surgery on a patient comprises securely mounting a patient onto a patient support table; imaging a spinal region of the patient; building up a three-dimensional image file of the spinal region of the patient; storing the image file; and utilizing the image file for planning and carrying out computer controlled spinal surgery on the patient utilizing the implant. A computer-controlled surgical implant system comprises a steerable endosurgical implanting assembly operative to install the implant at a desired location in a patient; and a computerized controlled, which operates the steerable endosurgical implanting system.
摘要:
A hip joint prosthesis 10 includes a resilient element (artificial acetabulum) 16 which is positioned between innominate bone and femoral head 12. The resilient element 16 has a generally cup-shaped configuration, with a generally hemispherical convex outer engagement surface 18 for engaging innominate bone and with a generally hemispherical concave inner engagement surface configured as a wear resistant articulation surface for articulation with femoral head 12. The resilient element 16 has a non-linear, half-bell-shaped stress strain relationship.
摘要:
A stem-like bone implant (10) includes longitudinal structural members (16A) and tension cables (31) that provide curvature control, support and rigidity against bending and buckling. The longitudinal structural members (16A) and tension cables (31) may become an integral part of a composite regenerated bone having a substantially increased strength over natural bone. The flexibility of the implant (10) is controlled by specifically varying the structural geometry of certain portions of the implant and by adjusting the tension in the tension cables (31) before, during and after the implantation operation to thereby adjust the stiffness of the implant. The tension cables (31) may be adjusted to produce asymmetric or non-uniform levels of tension in the longitudinal structural members (16A).