Back to results
US 8,221,501 B2Granted
Expandable intervertebral implant
AssigneeWarsaw Orthopedic, Inc.
InventorsLukas Eisermann, Paul Geibel, Jeffrey Zhang
Life of this patent
Estimating the term…
Abstract
An expandable intervertebral implant including a body having a longitudinal axis and including first and second axial walls spaced apart along a transverse axis, and first and second transverse end walls extending between and interconnecting the first and second axial walls. The intervertebral implant includes an expansion member co-acting with the axial walls to expand the body along the transverse axis.
Claims20
An expandable intervertebral implant, comprising:
- a body having a longitudinal axis and including first and second axial walls spaced apart along a transverse axis to define an inner chamber, said first axial wall including a first pair of opposite end portions, said second axial wall including a second pair of opposite end portions, said first pair of end portions interconnected with said second pair of end portions;
- and
- an expansion member comprising an elongate pin having a length extending substantially entirely across a width of said inner chamber, the expansion member being slidably engaged with said first and second axial walls at a location intermediate said first and second pairs of opposite end portions and extending transversely between central portions of said first and second axial walls to expand said body along said transverse axis.
An expandable intervertebral implant, comprising:
- a body having an implant length extending along a longitudinal axis and an implant width, said body including first and second axial walls extending generally along said longitudinal axis and spaced apart along a transverse axis to define an inner chamber, said body including first and second transverse end walls extending between and interconnecting opposing end portions of said first and second axial walls;
- and
- an expansion member comprising an elongate pin having a length extending substantially entirely across a width of said inner chamber, the expansion member being slidably engaged with said first and second axial walls to expand said body along said transverse axis such that said first and second axial walls are outwardly deformed to define a convex outer curvature extending along said implant length.
An expandable intervertebral implant, comprising:
- a body having a longitudinal axis and including first and second axial walls spaced apart along a transverse axis to define an inner chamber, said body including first and second transverse end walls extending between and interconnecting opposing end portions of said first and second axial walls;
- and
- an expansion member comprising an elongate pin having a length extending substantially entirely across a width of said inner chamber, the expansion member being slidably engaged with said first and second axial walls at a location intermediate said first and second transverse end walls and extending transversely between central portions of said first and second axial walls to transition said body from an initial configuration to an expanded configuration wherein said first and second axial walls are outwardly deformed away from one another along said transverse axis.
A surgical method, comprising:
- providing an expandable intervertebral implant having a longitudinal axis and including first and second axial walls spaced apart along a transverse axis to define an inner chamber, the body including first and second transverse end walls extending between and interconnecting opposing end portions of the first and second axial walls;
- inserting the intervertebral implant within an intervertebral space with the first and second axial walls positioned adjacent respective first and second vertebral bodies;
- positioning an expansion member comprising an elongate pin having a length extending substantially entirely across a width of said inner chamber, between the first and second axial walls;
- and
- expanding the intervertebral implant along the transverse axis by slidably engaging the expansion member with the first and second axial walls at a location intermediate the first and second transverse end walls with the expansion member extending transversely between mid-portions of the first and second axial walls to engage the first and second axial walls against the respective first and second vertebral bodies.
2 more elements
Dependencies are inferred from the claim text.