In-situ formed intervertebral fusion device and method
AssigneeDePuy Synthes Products, Inc.
InventorsHassan Serhan, Thomas M. DiMauro, John Daniel Malone
Life of this patent
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Abstract
An orthopedic device for implanting between adjacent vertebrae comprising: an arcuate balloon and a hardenable material within said balloon. In some embodiments, the balloon has a footprint that substantially corresponds to a perimeter of a vertebral endplate. An inflatable device is inserted through a cannula into an intervertebral space and oriented so that, upon expansion, a natural angle between vertebrae will be at least partially restored. At least one component selected from the group consisting of a load-bearing component and an osteobiologic component is directed into the inflatable device through a fluid communication means.
Claims19
An expandable spinal fusion implant, comprising:
- a) an upper endplate having an upper surface configured to engage bone and a lower surface;
- b) a lower endplate having a lower surface configured to engage bone and an upper surface;
- c) a core having a first mating surface that mates with the upper endplate via a slidable guide-track and a second mating surface that mates with the lower endplate via a slidable guide-track;
- and
- d) an elongate metallic element extending longitudinally through the core;
- wherein the core includes first and second opposed ramped surfaces;
- wherein longitudinal translation of the ramped surfaces increases a height between the upper surface of the upper endplate and the lower surface of the lower endplate;
- wherein the upper and lower endplates and the core are each arcuate in a plane parallel to their length.
An expandable spinal fusion implant, comprising:
- an upper endplate having an upper surface configured to engage bone;
- a lower endplate having a lower surface configured to engage bone;
- and
- a core positionable between the upper and lower endplates, the core including:
- a first surface that includes a guide configured to slide within a track formed in the upper endplate;
- a second surface that extends at an oblique angle with respect to the upper endplate;
- a third surface that includes a guide configured to slide within a track formed in the lower endplate;
- and
- a fourth surface that extends at an oblique angle with respect to the lower endplate;
- wherein a height between the upper surface of the upper endplate and the lower surface of the lower endplate is expandable by ramping action of the second and fourth surfaces;
- wherein the upper and lower endplates and the core are each arcuate in a plane parallel to their length.
An expandable spinal fusion implant, comprising:
- an upper endplate having an upper surface configured to engage bone;
- a lower endplate having a lower surface configured to engage bone;
- a first ramp surface extending at an angle relative to the upper surface of the upper endplate;
- a second ramp surface extending at an angle relative to the lower surface of the lower endplate;
- a first guide surface that mates with the upper endplate via a slidable guide track;
- and
- a second guide surface that mates with the lower endplate via a slidable guide track;
- wherein the first and second ramp surfaces are slidable with respect to one other to expand a height of the implant by longitudinal translating movement.
An expandable spinal implant, comprising:
- a top component having a track formed therein and an upper surface configured to engage a vertebral endplate;
- a bottom component having a track formed therein and a lower surface configured to engage a vertebral endplate;
- a first portion disposed between the top and bottom components, the first portion having a guide slidably-received within the track of the top component;
- a second portion disposed between the top and bottom components, the second portion having a guide slidably-received within the track of the bottom component;
- and
- first and second opposed ramping surfaces longitudinally slidable along one another to expand a height of the implant;
- wherein the implant has a middle portion and opposed end portions, and wherein the middle portion has a greater height than the opposed end portions.
An expandable spinal implant, comprising:
- a top component having a track formed therein and an upper surface configured to engage a vertebral endplate;
- a bottom component having a track formed therein and a lower surface configured to engage a vertebral endplate;
- a first portion disposed between the top and bottom components, the first portion having a guide slidably-received within the track of the top component;
- a second portion disposed between the top and bottom components, the second portion having a guide slidably-received within the track of the bottom component;
- and
- first and second opposed ramping surfaces longitudinally slidable along one another to expand a height of the implant;
- wherein the top and bottom components are arcuate along their respective lengths.
Dependencies are inferred from the claim text.