摘要:
An nucleus prosthesis is disclosed having a plurality of linked segments configured to form, in a closed position, a disc shape. A method includes inserting a plurality of linked segments into an annulus fibrosus and closing the prosthesis so that a first segment inserted into the annulus fibrosus and a last segment inserted into the annulus fibrosus are substantially abutted. Another method includes inserting a plurality of linked segments into an intervertebral disc space and closing the prosthesis so that a first segment inserted into the intervertebral disc space and a last segment inserted into the intervertebral disc space are substantially abutted.
摘要:
A method of manufacturing a composite interbody device is provided, comprising: assembling superior and inferior endplates: wherein the surface features increase surface area of the bone interface layer, to optimize contact with bone at an implant site; and forming a porous core interface layer on the central barrier layer opposite the bone interface layer; diffusion bonding under heat and pressure the core interface layer with the central barrier layer and the bone interface layer coating the bone interface side with hydroxyapatite; placing the inferior and superior endplates in a mold, on each side of a core cavity, with the core interface layers facing the core cavity and the bone interface sides facing away from the cavity; and injection-molding molten plastic into the core cavity, to form a plastic core between the endplates and bonded with core interface sides of the core interface layers; wherein molten plastic extrudes into pores of the core interface layers, to bond with the endplates.
摘要:
An intervertebral implant (1) comprises first and second implant bodies (3, 5) which extend along a longitudinal direction of the implant and said bodies include first and second proximal and distal ends (3A/3B and 5A/5B) forming opposite ends in longitudinal direction, where the first and second implant bodies (3, 5) are connected and being movable relative to each; a threaded member (7) rotatable seated in the first implant body and having a proximal end (11) that is accessible from the outside the implant, the proximal end of the threaded member comprises a first interface (17) and allows the transmission of a rotary motion about the rotary axis to the threaded member by use of a rotatable tool; and a thread (15) located in the second implant body, and is arranged to cooperate with the treaded member seated in the first implant body and imparts a longitudinal movement to the second implant body relative to the first implant body by rotation of the threaded member about its rotary axis; the proximal end of the threaded member further comprises securing means (23).
摘要:
Devices and methods for orthopedic support are disclosed. The device can have a first rigid section hingedly attached to a second rigid section. The device can be curved or rotated around obstructions along an access path to a target site. The device can be delivered to an intervertebral location in a patient.
摘要:
A method of manufacturing a composite interbody device is provided, comprising: assembling superior and inferior endplates: wherein the surface features increase surface area of the bone interface layer, to optimize contact with bone at an implant site; and forming a porous core interface layer on the central barrier layer opposite the bone interface layer; diffusion bonding under heat and pressure the core interface layer with the central barrier layer and the bone interface layer coating the bone interface side with hydroxyapatite; placing the inferior and superior endplates in a mold, on each side of a core cavity, with the core interface layers facing the core cavity and the bone interface sides facing away from the cavity; and injection-molding molten plastic into the core cavity, to form a plastic core between the endplates and bonded with core interface sides of the core interface layers; wherein molten plastic extrudes into pores of the core interface layers, to bond with the endplates.
摘要:
Described is a medical device in the form of a thin sheet having granules of a calcium-containing, osteoconductive material interconnected by a thin web of polymeric material. The device includes a first face and a second face, wherein at least the first face is populated with proturbances presenting exposed regions of the calcium-containing, osteoconductive material provided by underlying granules. Methods of making and using such devices are also described, as are methods.
摘要:
A modular prosthetic foot characterized by an ankle component; a forefoot component having a circular part with a rounded top surface and at least one flat side surface, said circular part being connected to a rear part of the forefoot component; a forefoot cushion bumper positioned around the circular part; and a heel component.