Connect public, paid and private patent data with Google Patents Public Datasets

Expandable interbody fusion cage

Download PDF

Info

Publication number
US20020045945A1
US20020045945A1 US09949516 US94951601A US20020045945A1 US 20020045945 A1 US20020045945 A1 US 20020045945A1 US 09949516 US09949516 US 09949516 US 94951601 A US94951601 A US 94951601A US 20020045945 A1 US20020045945 A1 US 20020045945A1
Authority
US
Grant status
Application
Patent type
Prior art keywords
expandable
cage
expansion
end
fig
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US09949516
Inventor
Mingyan Liu
Loic Josse
Original Assignee
Mingyan Liu
Loic Josse
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/4455Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • A61F2/446Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30721Accessories
    • A61F2/30744End caps, e.g. for closing an endoprosthetic cavity
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442Intervertebral or spinal discs, e.g. resilient
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/28Bones
    • A61F2002/2817Bone stimulation by chemical reactions or by osteogenic or biological products for enhancing ossification, e.g. by bone morphogenetic or morphogenic proteins [BMP] or by transforming growth factors [TGF]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/28Bones
    • A61F2002/2835Bone graft implants for filling a bony defect or an endoprosthesis cavity
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/3011Cross-sections or two-dimensional shapes
    • A61F2002/30138Convex polygonal shapes
    • A61F2002/30143Convex polygonal shapes hexagonal
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/30199Three-dimensional shapes
    • A61F2002/302Three-dimensional shapes toroidal, e.g. rings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108Shapes
    • A61F2002/30199Three-dimensional shapes
    • A61F2002/30224Three-dimensional shapes cylindrical
    • A61F2002/30235Three-dimensional shapes cylindrical tubular, e.g. sleeves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30332Conically- or frustoconically-shaped protrusion and recess
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30405Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30405Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • A61F2002/30408Conical threadings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30537Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/30538Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30579Special structural features of bone or joint prostheses not otherwise provided for with mechanically expandable devices, e.g. fixation devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30594Special structural features of bone or joint prostheses not otherwise provided for slotted
    • A61F2002/30596Special structural features of bone or joint prostheses not otherwise provided for slotted slots ending in apertures, e.g. for avoiding stress concentration at the ends of the slots
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves
    • A61F2002/30772Apertures or holes, e.g. of circular cross section
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves
    • A61F2002/30772Apertures or holes, e.g. of circular cross section
    • A61F2002/30774Apertures or holes, e.g. of circular cross section internally-threaded
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves
    • A61F2002/30772Apertures or holes, e.g. of circular cross section
    • A61F2002/30777Oblong apertures
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves
    • A61F2002/30772Apertures or holes, e.g. of circular cross section
    • A61F2002/30784Plurality of holes
    • A61F2002/30785Plurality of holes parallel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves
    • A61F2002/30772Apertures or holes, e.g. of circular cross section
    • A61F2002/30784Plurality of holes
    • A61F2002/30787Plurality of holes inclined obliquely with respect to each other
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves
    • A61F2002/3085Special external and/or bone-contacting surfaces, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes, grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/44Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2002/4475Joints for the spine, e.g. vertebrae, spinal discs hollow
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4623Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof having a handle portion, e.g. integral with the implanting tool
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2002/4625Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use
    • A61F2002/4627Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4637Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • A61F2002/4638Tools for performing screwing, e.g. nut or screwdrivers, or particular adaptations therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017Angular shapes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063Three-dimensional shapes
    • A61F2230/0065Three-dimensional shapes toroidal, e.g. ring-shaped, doughnut-shaped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063Three-dimensional shapes
    • A61F2230/0069Three-dimensional shapes cylindrical
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0004Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
    • A61F2250/0006Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting angular orientation

Abstract

An expandable interbody fusion device in one embodiment includes a cylindrical body (10) defining a hollow interior (17) for receiving bone graft or bone substitute material. The body (10) is divided into a number of branches (24, 26, 40 and 41) connected to one another at a fixed end (20) and separated at an expandable end (18). The expandable cage may be inserted in its substantially cylindrical form and may be expanded by movement of an expansion member (50) to establish lordosis of the spine. The present invention provides an expansion member (50) that interacts with the interior surfaces of the device to maintain the cage in the expanded condition and provide a large internal chamber (17) for receiving bone in-growth material. Methods for insertion of the fusion device are also disclosed.

Description

    BACKGROUND OF THE INVENTION
  • [0001]
    The present invention relates to an implantable device for promoting fusion between two adjacent bony structures and a method of inserting the same. More particularly, the invention relates to an expandable fusion cage that may be inserted, in a reduced size configuration, into an intervertebral space and expanded after insertion to provide a desired size. While the device according to the present invention may have application in other areas of the body, the present invention is preferably utilized for vertebral interbody fusion.
  • [0002]
    There have been an extensive number of attempts to develop an exceptional intradiscal implant that could be used to replace a damaged disc and yet maintain the stability of the disc interspace between adjacent vertebra, at least until complete arthrodesis is achieved. These “interbody fusion devices” have taken many forms. For example, one of the more prevalent designs takes the form of a cylindrical implant. These types of implants are presented by the patents to Bagby, U.S. Pat. No. 4,501,269; Brantigan, U.S. Pat. No. 4,878,915; Ray, U.S. Pat. Nos. 4,961,740 and 5,055,104; and Michelson, U.S. Pat. No. 5,015,247. In the cylindrical implants, the exterior portion of the cylinder can be threaded to facilitate insertion of the interbody fusion device, as represented by the Ray, Brantigan and Michelson patents. In the alternative, some of the fusion implants are designed to be pounded into the intradiscal space. This type of device is represented by the patent to Brantigan.
  • [0003]
    Interbody fusion devices can be generally divided into two basic categories, namely solid implants and implants that are designed to permit bone in-growth. Solid implants are represented by U.S. Pat. Nos. 4,879,915; 4,743,256; 4,349,921; and 4,714,469. The remaining patents discussed above include some aspect that allows bone to grow across the implant. It has been found that the devices that promote natural bone in-growth achieve a more rapid and stable arthrodesis. The device depicted in the Michelson patent is representative of this type of hollow implant which is typically filled with a bone growth inducing substance to promote bone growth into and through the device. This implant includes a plurality of circular apertures which communicate with the hollow interior of the implant, thereby providing a path for tissue growth between the vertebral end plates and the bone growth material within the implant. In preparing the intradiscal space, the end plates are preferably reduced to bleeding bone to facilitate the tissue in-growth. During fusion, the metal structure provided by the Michelson implant helps maintain the patency and stability of the motion segment to be fused. In addition, once arthrodesis occurs, the implant itself serves as a sort of anchor for the solid bony mass.
  • [0004]
    One problem that is not addressed by the above prior devices concerns maintaining and restoring the normal anatomy of the fused spinal segment. Naturally, once the disc is removed, the normal lordotic or kyphotic curvature of the spine is eliminated. With the prior devices, the need to restore this curvature is neglected. For example, adjacent vertebral bodies may be reamed with a cylindrical reamer that fits the particularly implant. In some cases, the normal curvature is established prior to reaming and then the implant inserted. However, this over-reaming of the posterior portion is generally not well accepted because of the removal of load bearing bone of the vertebrae and because it is typically difficult to ream through the posterior portion of the lower lumbar segment where the lordosis is the greatest. In most cases using implants of this type, no effort is made to restore the lordotic curvature so that the cylindrical implant is likely to cause a kyphotic deformity as the vertebrae settles around the implant. This phenomena can often lead to revision surgeries because the spine becomes imbalanced.
  • [0005]
    In each of the above-listed patents, the transverse cross-section of the implant is substantially constant throughout its length and is typically in the form of a right circular cylinder. Other implants have been developed for interbody fusion that do not have a constant cross-section. For instance, the patent to McKenna, U.S. Pat. No. 4,714,469 shows a hemispherical implant with elongated protruberances that project into the vertebral end plate. Further, U.S. Pat. No. 5,669,909 to Zdeblick et al., shows a truncated conical implant adapted to be threadedly received in the intervertebral space. However, these devices require an opening at least as large as the largest segment of the device. The requirement for such a relatively large opening may limit the use of such devices, particularly where access to the spine is limited due to obstructing vessels and neurological structures.
  • [0006]
    Still further implants have been developed that provide the ability to adjust the size of the implant after insertion. U.S. Pat. Nos. 5,665,122 to Kambin, 5,554,191 to LaHille et al., and 5,653,763 to Errico et al., disclose implants which provide at least some degree of adjustability of the height of the implant to restore lordosis. However, these implants do not allow the device to be easily and securely inserted into a disc space and the internal expansion mechanism limits the ability to pack the interior with a large amount of bone in-growth material.
  • [0007]
    In view of the limitations of the prior devices, there remains a need for an interbody fusion cage capable of stabilizing the spine in a manner comparable to interbody implant designs presently in use, and at the same time providing a mechanism for restoring normal lordosis of the spine. After expansion, the implant should have an internal cavity adapted to receive bone graft or bone substitute to encourage bone growth through the expanded implant.
  • SUMMARY OF THE INVENTION
  • [0008]
    In response to the needs still left unresolved by the prior devices, the present invention contemplates an expandable fusion cage adapted to be inserted between a pair of vertebral bodies to restore the normal angular relation between adjacent vertebrae. In particular, a device according to the present invention comprises a body having an outer bone engaging surface and an inner surface defining an internal chamber and a retaining mechanism. The body has a fixed portion and an expandable portion. The expandable portion is divided into at least a first branch and a second branch, interconnected at the fixed portion. The first branch is moveable with respect to the second branch in the expandable portion to expand the overall size of the fusion cage. An expansion member is sized to be at least partially received within the internal chamber and has an outer surface adapted to engage the retaining mechanism. Movement of the expansion member within the internal chamber urges the first branch to move with respect to the second branch thereby expanding the expandable portion. The expansion member is retained in position by engagement with the retaining mechanism of the body.
  • [0009]
    In another aspect of the invention, an expandable intersomatic cage has a tubular body having an outer bone engaging surface and an inner surface defining an interior chamber. The inner surface further defines an inclined surface and a retaining mechanism. The body defines a fixed portion and a moveable portion, the inclined surface is disposed adjacent the moveable portion. In this aspect of the invention, an expansion member is included having an outer surface configured to engage the inclined surface and the retaining portion. Movement of the expansion member against the inclined surface moves the moveable portion to expand the cage. The expansion member is retained in position by engagement with the retaining mechanism.
  • [0010]
    In another embodiment, the invention contemplates an insertion tool cooperable with an expandable fusion implant. The insertion tool is operable to insert the implant and move the expansion member to expand the cage. A cage according to the present invention is utilized with an insertion tool having an outer sleeve adapted to engage the body of the cage to transmit compressive force to the cage. The insertion tool further includes an inner shaft moveably disposed within the outer sleeve. The inner shaft is sized to be inserted into at least a portion of the interior chamber of the cage. The inner shaft has a distal end configured to removably engage the expansion member, whereby movement of the inner shaft with respect to the outer sleeve moves the expansion member in relation to the cage.
  • [0011]
    In another aspect of the invention, methods are provided for insertion of an expandable intersomatic device. In one aspect a device according to the present invention is inserted into the disc space. The moveable portion of the device is positioned adjacent a portion of the vertebra requiring additional spacing. The expansion member is then moved within the internal chamber and against the moveable portion to expand the cage to the desired height. The expansion member may be engaged with the retaining mechanism to limit movement of the expansion member.
  • [0012]
    One object of the present invention is to provide an implant that has a reduced size insertion configuration and is expandable from the insertion configuration to a larger configuration.
  • [0013]
    Another object of the present invention is to provide an expandable implant that has a substantially unobstructed interior chamber to receive bone growth promoting material.
  • [0014]
    Still another object of the present invention is to provide a fusion cage configured for easy insertion and expandable to a larger size to establish lordosis.
  • [0015]
    Yet a further object of the present invention is to provide an improved method for inserting a fusion cage and restoring lordosis.
  • [0016]
    Related objects and advantages of the present invention will be apparent from the following description.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0017]
    [0017]FIG. 1 is a top view of an expandable cage according to one embodiment of the present invention.
  • [0018]
    [0018]FIG. 2a is a side cross-sectional view of the device of FIG. 1.
  • [0019]
    [0019]FIG. 2b is the device of FIG. 2a with the inclusion of an expansion wedge according to one embodiment of the present invention.
  • [0020]
    [0020]FIG. 3 is a partial cross-sectional perspective view of the expandable cage of FIG. 1 without an external thread pattern.
  • [0021]
    [0021]FIG. 4 is a perspective view of the expansion wedge of FIG. 2b.
  • [0022]
    [0022]FIG. 5 is an end view of the expansion wedge of FIG. 4.
  • [0023]
    [0023]FIG. 6 is an elevational view of an insertion tool according to one embodiment of the present invention.
  • [0024]
    [0024]FIG. 7a is a sagittal plane view showing a partial cross-sectional side view of the expandable cage of FIG. 2b inserted between two adjacent vertebrae in an insertion configuration according to one embodiment of the present invention.
  • [0025]
    [0025]FIG. 7b is the cage of FIG. 7a shown in an expanded position according to one embodiment of the present invention.
  • [0026]
    [0026]FIG. 8 is a top view of an alternative embodiment of the expandable cage of FIG. 1.
  • [0027]
    [0027]FIG. 9 is a side cross-sectional view of the expandable cage of FIG. 8.
  • [0028]
    [0028]FIG. 10 is a partial cross-sectional perspective view of the expandable cage of FIG. 8 without an external thread pattern.
  • [0029]
    [0029]FIG. 11 is a top view of a further embodiment of an expandable cage according to the present invention.
  • [0030]
    [0030]FIG. 12 is a side partial cross-sectional view of the expandable cage of FIG. 11.
  • [0031]
    [0031]FIG. 13 is a partial cross-sectional perspective view of the expandable cage of FIG. 11, without an external thread pattern.
  • [0032]
    [0032]FIG. 14 is a side partial cross-sectional view of a further embodiment of the present invention.
  • [0033]
    [0033]FIG. 15 is a side partial cross-sectional side view of yet a further embodiment of the present invention.
  • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • [0034]
    For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended, such alterations and further modifications in the illustrated devices, and such further applications of the principles of the invention as illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
  • [0035]
    Referring now to FIGS. 1 through 3, there is shown a first embodiment of an expandable cage 10 in accordance with the present invention. In this embodiment of the invention, expandable cage 10 has a cylindrical outer surface 11 defining an external thread pattern 12 (not shown in FIG. 3) adapted to engage two adjacent vertebra (see FIGS. 7a and 7 b) and to advance the cage into the disk space as cage 10 is rotated about longitudinal axis 13. As shown most clearly in FIG. 3, expandable cage 10 is substantially hollow with inner surface 21 defining an internal cavity 17. Expandable cage 10 includes a bone in-growth window 16 formed through expandable branch 24 and an identical bone in-growth window 19 formed through expandable branch 26. These in-growth windows are adapted to permit communication between the vertebral bodies (FIG. 7) and internal chamber 17. In most application, bone growth promoting material will be placed within internal chamber 17 of expandable cage 10 to encourage bone to grow into and through fusion device 10.
  • [0036]
    As shown in the accompanying drawings, expandable cage 10 is preferably composed of four separate branches, each separated at expandable end 18 by a channel extending longitudinally from expandable end 18 toward fixed end 20. Referring now to FIG. 2a, first expandable branch 24 is separated from first fixed branch 40 by channel 14. In a similar manner, second expandable branch 26 is separated from first fixed branch 40 by channel 22. Each of channels 14 and 22 extends from expandable end 18 towards fixed end 20. The channels terminate in a slightly larger diameter radiused opening which preferably acts as a hinge during expansion of the device to concentrate stress and deformation adjacent fixed end 20. In a similar fashion, as shown in FIG. 3, second fixed branch 41 is separated from first expandable branch 24 by channel 15 and from second expandable branch 26 by a similar channel (not shown) Thus, expandable cage 10 is formed by four branches, each separated from the other at expandable end 18 by channels extending from outer surface 11 to internal chamber 17. The branches are connected at fixed end 20 by linking area 44 such that each of the branches may move substantially independent from each other at expandable end 18 while remaining connected to the device by linking area 44. Although the present embodiment utilizes integrally formed branches, it is contemplated that separate components may be joined to form the expandable cage without deviating from the invention.
  • [0037]
    While four separate branches are shown in a preferred embodiment, it is contemplated that more or less branches could be utilized without deviating from the spirit or scope of the invention. Moreover, although in a preferred embodiment the channels extend from outer surface 11 to internal chamber 17, it is contemplated that the channels may not extend to the interior chamber. Such a channel may be formed by an overlapping interface between two adjacent branches without creating an opening for bone in-growth into internal chamber 17. Further, although channels are shown as being preformed in the expandable cage, it is contemplated that the channels may be formed as the implanted is expanded. By way of example, and without limitation, this could occur by rupturing a frangible portion between adjacent branches or by deforming material disposed between adjacent branches.
  • [0038]
    In one aspect of the invention, internal chamber 17 comprises the majority of the volume of the entire cage 10. Specifically referring to FIG. 2a, external surface 11 defines a diameter 63, excluding threads 12. Internal chamber 17 has a diameter of at least 64, that is diameter 63 less twice the branch thickness 62.
  • [0039]
    In a preferred embodiment, branch thickness 62 is selected such that the volume of internal chamber 17, particularly with the inclusion of voids created by in-growth windows 16 and 19 and the various channels occupies the majority of the entire volume of cage 10. Thus, the present invention provides space for a large volume of bone growth promoting material to be inserted into the device to promote bone in-growth.
  • [0040]
    Adjacent expansion end 18, as shown in FIG. 2a with respect to branches 24, 40 and 26, each of the branches includes inclined surfaces 28, 34 and 30, respectively. Adjacent the internal termination of each of the inclined surfaces 28, 34 and 30, is formed an internal shoulder 36, 42 and 38, respectively. Referring to FIG. 3, branch 41 includes a similar inclined surface 35 and internal shoulder 43. As shown in FIG. 2a, arcuate inclined surfaces 28 and 30 are inclined at angle 32 with respect to each other. In a preferred embodiment, this angle is approximately 96°, although it is understood that a variety of angles could be utilized depending on the amount of expansion desired, and the distance an expansion member will need to travel to create the expansion.
  • [0041]
    Referring now to FIG. 2b, cage 10 is shown with the inclusion of expansion wedge 50 disposed adjacent expandable end 18. Expansion wedge 50 is further illustrated in FIGS. 4 and 5. Expansion wedge 50 includes first and second opposed expansion wedge inclines 52 and 54, which have a tapering arcuate surface that mates with and corresponds to inclined surfaces 28 and 30 of branches 24 and 26, respectively. Wedge 50 includes side walls 58 and 60 with substantially planar surfaces adapted to engage inclined surfaces 34 and 35 of fixed branches 40 and 41, respectively. Further, expansion wedge 50 includes a central opening 56 which is adapted to receive a driving tool. In a preferred embodiment, central opening 56 is threaded to receive a correspondingly threaded end of a driving tool.
  • [0042]
    It will be understood that as wedge 50 is advanced toward fixed end 20, inclined surfaces 52 and 54 act upon inclined surfaces 28 and 30, respectively, to urge branches 24 and 26 apart from each other at expandable end 18. As expansion wedge 50 is inserted along inclined surfaces 28 and 30, branches 24 and 26 will tend to expand at expansion end 18 as deformation occurs adjacent fixed end 20. Substantially continuous linking material 44 links all of the branches and does not permit their expansion at fixed end 20. As wedge 50 is further advanced toward fixed end 20, the wedge is pushed beyond shoulders 36 and 38, such that wedge 50 is captured within cage 10. As a result of the engagement of back surface 55 of the wedge against shoulders 36 and 38, expansion wedge 50 is prevented from being expelled from the cage, and the cage is maintained in an expanded condition with the wedge securely held in position. It will be understood that the engagement of planar surfaces 58 and 60 on fixed branches 40 and 41, respectively, tends to deformably expand these branches little, if any, and therefore they remain substantially fixed in their original positions. Further, fixed branches 40 and 41 each include shoulders 42 and 43 which engage the back surface 55 of wedge 50 once it has passed beyond the shoulders. Thus, fixed branches 40 and 41 also tend to hold the wedge in place and prevent its expulsion from internal chamber 17.
  • [0043]
    Referring now to FIGS. 8 through 10, there is shown an alternative embodiment of the expandable cage of the present invention. In this embodiment, expandable cage 310 has an outer surface 311 and an external thread pattern 312 (not shown in FIG. 10). As with the embodiment of FIG. 1, expandable cage 310 includes two opposed expandable branches 324 and 324, and two opposed fixed branches 340 and 341 joined at fixed end 320. Each of these branches define inclined surfaces and interior shoulders adjacent expandable end 318 adapted to engage and receive expansion wedge 350. In contrast to the embodiment of FIG. 1, expandable branch 324 includes two bone in-growth windows 316 and 317, separated by rib 330. In a similar manner, expandable branch 326 includes two bone in-growth windows 322 and 323 separated by rib 332. The use of a plurality of bone in-growth windows in the expandable branches increases the overall strength of the branch which may be necessary for longer cages or cages constructed of relatively weak materials. While this embodiment has been shown with two windows per each expandable branch, it is contemplated that more than two bone in-growth windows may be utilized without deviating from the spirit and scope of the invention.
  • [0044]
    Referring now to FIG. 6, there is shown an insertion tool 70 suitable for use with an expandable cage according to the present invention. Insertion tool 70 includes an outer sleeve 72 having a driving projection 73 adapted to engage driving groove 46 of expandable cage 10. While insertion tool 70 is illustrated with only projection 73, it will be understood that the device includes an opposing projection (not shown) for mating with a driving groove (not shown) disposed opposite driving groove 46 on cage 10. Insertion tool 70 further includes handle 71 adapted to transmit rotational force to outer sleeve 72 to rotationally insert cage 10. Outer sleeve 72 includes an internal chamber, which is occupied by insertion tool inner shaft 75. On the distal end 77, insertion tool inner shaft 75 includes an externally threaded area adapted to engage the correspondingly internally threaded central opening 56 of expansion member 50. At the proximal end of inner shaft 75 there is a handle 76 for providing rotational force to inner shaft 75. A series of external threads 78 are formed on inner shaft 75 adjacent handle 76. A internally threaded nut 79 is disposed about inner shaft 75 and is adapted to engage threads 78 to move inner shaft 75 with respect to outer sleeve 72.
  • [0045]
    In operation, insertion tool 70 is engaged with expandable cage 10 such as shown in FIG. 7a. Driving projection 73 of outer tube 72 engages driving groove 46 of expandable cage 10 and threaded distal end 77 of inner shaft 75 threadedly engages threaded opening 56 of expansion wedge 50. In this manner, expansion wedge 50 is securely held in position adjacent the expansion end 18 while the threaded cylindrical cage is inserted into the intervertebral space. In a preferred embodiment, this device is utilized from a posterior approach to the spine with the expansion wedge 50 being positioned at the leading end of the device.
  • [0046]
    Referring to FIG. 7a, expandable cage 10 is threaded into intervertebral space 92 with thread pattern 12 engaging vertebra 80 and 82 to advance the cage into the disc space and securely hold it in position once it has reached a final position as shown in FIG. 7a. Since the expandable cage is preferably a cylinder having a uniform diameter, it may be inserted through an insertion tube having a diameter substantially equal to the thread diameter of the cage 10. As shown in FIG. 7a, the surface 88 of vertebrae 80 is in contact with outer surface 11 of cage 10. It will be understood that in many applications, a portion of the vertebral end plate will have been removed prior to cage insertion such that cage 10 engages the cancellous bone of the vertebrae. In a similar manner, the surface 90 of vertebrae 82 is in contact with the outer surface 11 of cage 10. In its initial insertion position, the alignment 84 of vertebrae 80 and the alignment 86 of vertebrae 82 are in substantial parallel alignment with longitudinal axis 13 and expandable branches 24 and 26 of cage 10.
  • [0047]
    Referring now to FIG. 7b, with threaded end 77 of the insertion device firmly engaged in threaded opening 56 of expansion wedge 50 and driving projection 73 engaged in driving groove 46, internally threaded nut 79 is rotated about external thread 78 to draw shaft 75 within outer tube 72 (FIG. 6), thereby advancing expansion wedge 50 toward fixed end 20. As expansion wedge 50 is advanced toward fixed end 20, the inclined surfaces of expansion wedge 50 force expandable branches 24 and 26 apart adjacent expandable end 18. In a similar manner, vertebra 80 and 82 are forced apart adjacent expandable end 18 such that the alignment 84 and 86 remain substantially parallel to the expandable branches 24 and 26, respectively, and not with longitudinal axis 13 of cage 10. In this manner, the lordotic curve of the spine may be established and maintained during the healing process. Moreover, the engagement of expansion wedge 50 with the previously described shoulders of each of the branches prevents the expansion wedge from being expelled from cage 10. The insertion tool may be removed and the substantially unobstructed area within interior chamber 17 may be filled with bone in-growth material to encourage bone growth through the device. Such bone in-growth material may include autograft, allograft, bone morphogenic proteins in a carrier, or other known bone growth promoting materials. Insertion and expansion of the alternative embodiment shown in FIGS. 8 through 10 is accomplished in substantially the same manner.
  • [0048]
    Referring now to FIGS. 11 through 13, there is shown a further embodiment of an expandable cage according to the present invention. As with the above-described embodiments of the invention, cage 110 is a substantially cylindrical device having an outer surface 111 defining an external thread pattern 112. Cage 110 defines a substantially cylindrical internal chamber 117. Cage 110 includes a pair of opposing expandable branches 152 and 154 separated by a pair of opposing fixed branches 148 and 150. Fixed branch 148 is separated from expandable branches 152 and 154 by channels 144 and 146, respectively. Fixed branch 150 is separated from expandable branches 154 and 152 by channel 147 and a similar channel (not shown), respectively. Cage 110 further includes bone in-growth windows 129 and 120 formed through expandable branch 152, and an identical pair of bone in-growth windows 119 and 121 formed through expandable branch 154. Each of the bone in-growth windows extend from outer surface 111 to internal chamber 117. As with the above-described embodiments, cage 110 includes a large unobstructed internal chamber 117 extending along the longitudinal axis 113 from adjacent the expandable end 118 toward the fixed end 114. In the embodiment shown in FIGS. 11 through 13, windows 120 and 121 each include a notch 122 and 123 adjacent expandable end 118, respectively.
  • [0049]
    Expander 130 is sized to be received within internal chamber 117. Expander 130 includes a first portion 125 having a projection 126 which extends into notch 122, and an opposite second portion 127 having projection 128 which extends into notch 123. Projections 126 and 128 work in conjunction with externally threaded plug 124 in maintaining the position of expander 130 within cage 110. Expander 130 further includes a bend 132. While a bend may be utilized in the preferred embodiment, it will be understood that expander 130 may include a fold or a hinge between portions 125 and 127, that allows adaptation into the reduced sized configuration shown in FIG. 12. First portion 125 includes a longitudinal axis 72 and second portion 127 includes a longitudinal axis 70. In the reduced size insertion configuration shown in FIG. 12, longitudinal axis 70 forms an angle 162 with respect to longitudinal axis 72. In a preferred embodiment, angle 162 is approximately 90°, although other angles are contemplated. In an expanded configuration (not shown), the angle between longitudinal axes 70 and 72 may approach 180°, with a 180° angle providing the maximum expansion of the device.
  • [0050]
    The internal chamber 117 is defined by the four previously described branches 148, 150, 152, and 154, each defining a portion of thread pattern 160 (only partially shown in FIG. 12). Plug 124 includes a corresponding external thread adapted to engage thread pattern 160. In a preferred embodiment, a connecting portion 149 extends between fixed branches 148 and 150 to limit splaying of the fixed branches as threaded plug 124 is advanced toward expandable end 118. Threaded plug 124 further includes a central opening 136 adapted to engage an insertion tool extension. In a preferred embodiment, central opening 136 is formed in a hexagonal pattern to accept a similar hexagonally shaped insertion tool (not shown). Cage 110 further includes a driving groove 142 adjacent fixed end 114, adapted for engagement with a driving tool projection to permit insertion of cage 110 between two adjacent bony structures. The driving tool of FIG. 6 may be utilized with cage 110 with the exception that the driving tool inner shaft 75 would include a hexagonally shaped portion at distal end 77. It will be understood that as threaded plug 124 is threadedly advanced towards expandable end 118, it urges expander 130 into an expanded condition, thereby forcing branches 152 and 154 apart. As shown in FIG. 13, the expansion mechanism of the present invention provides a large internal cavity to receive bone growth promoting material.
  • [0051]
    A further embodiment according to the present invention is shown in FIG. 14. Cage 180 is fashioned in a similar manner to cage 110 with the exception that it includes a plurality of smaller bone in-growth windows rather than two large windows in expandable branches 192 and 194. Variations of the number, size, shape and location of bone in-growth windows as may be dependent on the bone in-growth characteristics desired and the material properties of the cage is contemplated by the present invention. Further, the mechanism for expansion differs in that expander 184 is a substantially planar device, i.e. no bends or hinge, having a longitudinal axis 198. Expander 184 is substantially planar and has a first end 188 engaged in corner 186 formed between expandable branch 194 and end wall 199. The opposite end 190 engages and moves along inner surface 193 of expandable branch 192. Threaded plug 182 threadedly engages internal thread pattern 196 formed along the internal surfaces of the branches. It will be understood that in the unexpanded condition, axis 198 is skewed with respect to longitudinal axis 197 of cage 180. However, as threaded plug 182 advances towards expandable end 181, expander 184 moves towards an upright position with axis 198 moving towards a perpendicular arrangement with axis 197. The movement of expander 184 towards an upright position expands cage 180. In the expanded position, there is a large unobstructed internal chamber 189 extending from plug 182 to opening 187 adjacent fixed end 195. Thus, the large internal chamber 189 may be packed with bone in-growth material to promote fusion between adjacent vertebra.
  • [0052]
    Referring now to FIG. 15, there is shown still a further embodiment of the present invention. Cage 210 includes an outer surface 211 having a thread pattern 212 defined thereon. Cage 210 includes a driving groove 246 adapted to receive a driving tool such as that previously disclosed herein. Cage 210 further includes a plurality of windows 214 communicating from exterior surface 211 to interior chamber 217. Internal chamber 217 is defined by inclined surfaces 216 and 215 (shown in dash), sloping from the expandable end 222 towards the fixed end 224. The slope of inclined surfaces 216 and 215 could also be reversed to allow expansion by movement of the plug 218 in an opposite direction. Plug member 218 includes an external thread pattern adapted to engage with thread pattern 220 of surfaces 216 and 215. It will be understood that as plug member 218 is threadedly advanced toward fixed end 224, branches 230 and 231 are spread apart from one another. As shown in FIG. 15, branch 230 includes an area of reduced width 225, adapted to deform as plug member 218 is advanced. As shown, plug member 218 includes a central opening 237 adapted to receive an insertion tool extension to provide rotational force. Further, while driving groove 246 is shown formed on expandable end 222, it will be understood that for some insertion techniques, it will be desirable to have insertion tool groove 246 formed on fixed end 224. Moreover, a central aperture may be formed through fixed end 224 for passage of an insertion tool extension for engagement with plug 218.
  • [0053]
    While plugs 124 of the embodiment of FIG. 11, plug 182 of the embodiment of FIG. 14 and plug 218 of the embodiment of FIG. 15 have been shown and described as having a series of external threads for engagement with a corresponding thread pattern defined on the branches of the device, it will be understood that all the branches, or only the fixed branches of each of the devices, may be formed to define a series of ratchets. With a ratchet configuration, each of the plugs 124, 182, and 218 may be defined as having an outer surface adapted to advance over the ratchets to expand the device while having a trailing portion adapted to engage the ratchets to prevent expulsion. In this manner, the plugs may be advanced without threading. When utilizing this technique, the insertion tool may be adapted to securely hold the outer cage to prevent its further advancement as a result of the pushing or pulling force exerted on the plug members. In addition to modifications to the plug, the cage itself may be configured for push-in insertion and can be in shapes other than cylinders.
  • [0054]
    Cages according to the present invention are preferably formed of a biocompatible material having sufficient strength to withstand the loads that will be placed upon them for a given application. Additionally, in the preferred embodiments the material should have sufficient flexibility to undergo at least a small amount of deformation as a result of the expansion process. Alternatively, for some devices, it may be desirable to provide hinge points rather than permit the material to undergo a deformation. Most preferably, the material utilized to form the cages of the present invention is a medical grade titanium alloy. However, the devices could be formed of stainless steel, various types of plastic, various composites including carbon fiber devices, and bone or bone substitutes.
  • [0055]
    While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.

Claims (19)

What is claimed is:
1. An expandable fusion cage adapted to be inserted between a pair of vertebral bodies, comprising:
a body having an outer bone engaging surface and an inner surface defining an internal chamber and a retaining mechanism, said body defining at least a first branch, said branch having a fixed portion connected to said body and an expandable portion movable with respect to said body, said body defining at least a second branch connected to said body; and
an expansion mechanism sized to be at least partially received within said internal chamber and to engage said expandable portion, said expansion mechanism having an outer surface adapted to engage said retaining mechanism, whereby movement of said expansion mechanism within said internal chamber urges said first branch expandable portion to move with respect to said body thereby expanding said body, said expansion mechanism moving said first branch expandable portion at a greater rate than said second branch, said expansion mechanism retained in position by engagement with said retaining mechanism of the body.
2. The device of claim 1, wherein said bone engaging surface is an external thread.
3. The device of claim 1, wherein said retaining mechanism is a thread pattern defined on said inner surface and said expansion mechanism includes an externally threaded plug configured for engagement with said thread pattern.
4. The device of claim 1, wherein said retaining mechanism is an internal shoulder and said expansion mechanism is a wedge adapted to engage said shoulder.
5. The device of claim 1 wherein said body defines a third branch opposing said first branch, said third branch having a fixed portion connected to said body and an expandable portion, whereby movement of said expansion mechanism within said internal chamber urges both said first and third branches apart.
6. An expandable cage adapted to be inserted between a pair of vertebral bodies, comprising:
a tubular body having an outer bone engaging surface and an inner surface defining an interior chamber and a retaining mechanism, said body includes a fixed end and an expandable end and further including four longitudinal channels extending between said outer surface and said inner surface and from said expandable end toward said fixed end, said channels defining an opposing first and second branches separated by opposing third and fourth branches; and
an expansion mechanism having an outer surface configured to engage said inner surface and said retaining portion, whereby said expansion mechanism is moved against said inner surface to move said expandable end to expand said body, said expansion mechanism expanding said opposing first and second branches at a substantially greater rate than said opposing third and fourth branches, and said expansion mechanism retained in position by engagement with said retaining mechanism.
7. The device of claim 6, wherein said retaining mechanism includes at least one flange defined adjacent said inner surface and said expansion member includes a shoulder cooperable with said flange to maintain the position of said expansion member.
8. The device of claim 6, wherein said retaining mechanism is a thread pattern and said expansion member includes a corresponding external thread pattern.
9. The device of claim 6, wherein said bone engaging surface is an external thread.
10. An expandable cage adapted to be inserted between a pair of vertebral bodies, comprising:
a tubular body having an outer bone engaging surface and an inner surface defining an interior chamber having a threaded inclined surface, said body defining a fixed portion and a moveable portion, said inclined surface disposed adjacent at least said moveable portion; and
an expansion member having a threaded outer surface configured to engage said threaded inclined surface, whereby said expansion member is threadedly advanced along said threaded inclined surface to move said moveable portion to expand said body and said expansion member is retained in position by engagement with said threaded inclined surface.
11. The device of claims 6 or 10, wherein said body further defines bone in-growth openings between said inner surface and said outer surface.
12. The device of claims 6 or 10, wherein said interior chamber comprises at least 50% of the volume of the device, thereby allowing a substantial amount of bone growth promoting matter to be inserted into the interior chamber.
13. The device of claims 6 or 10, wherein said expansion member defines a central opening providing communication with said interior chamber.
14. An interbody fusion apparatus, comprising:
a hollow body having an outer bone engaging surface and an inner surface defining an internal chamber and a retaining mechanism, said body having a fixed portion and an expandable portion and defining at least a first branch and a second branch, said first branch and said second branch interconnected at said fixed portion, and said first branch moveable with respect to said second branch at said expandable portion;
an expansion member sized to be at least partially received within said internal chamber and having an outer surface adapted to engage said retaining mechanism, whereby movement of said expansion member within said internal chamber urges said first branch to move with respect to said second branch thereby expanding said expandable portion, said expansion member retained in position by engagement with said retaining mechanism of the body; and
an insertion tool having an outer sleeve adapted to engage said body to transmit compressive force and an inner shaft moveably disposed within said outer sleeve and sized to be inserted into at least a portion of said interior chamber, said inner shaft having a proximal end and a distal end, said distal end configured to removably engage said expansion member, whereby movement of said inner shaft with respect to said outer sleeve moves said expansion member in relation to said body.
15. The apparatus of claim 14, wherein said expansion member includes a central opening having a thread pattern and said distal end of said inner shaft includes a corresponding external thread pattern.
16. The apparatus of claim 14, wherein said expansion member includes a central hexagonal opening and said distal end of said inner shaft includes a corresponding external hexagonal shape.
17. The apparatus of claim 14, wherein said body further defines a driving groove and said outer sleeve defines a corresponding mating driving projection.
18. A method for insertion of an expandable interbody fusion device between a pair of vertebral bodies, comprising:
providing an expandable fusion cage having an external bone engaging surface, a movable portion and an internal cavity defining a retaining mechanism, and an expansion member sized to be at least partially received within the internal chamber and configured for engagement with the retaining mechanism and the movable portion;
inserting the expandable cage between two adjacent vertebrae;
positioning the moveable portion adjacent a vertebra;
moving the expansion member within the internal chamber and against the moveable portion to expand the cage; and
engaging the expansion member with the retaining mechanism to limit movement of the expansion member.
19. The method of claim 18, further including packing the internal cavity with material to promote gone in-growth.
US09949516 1998-08-28 2001-09-07 Expandable interbody fusion cage Abandoned US20020045945A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR9810832A FR2782632B1 (en) 1998-08-28 1998-08-28 Expandable interbody fusion cage
FRFR98/10832 1998-08-28
IBPCT/IB99/01478 1999-08-26
US09763073 US6436140B1 (en) 1998-08-28 1999-08-26 Expandable interbody fusion cage and method for insertion
PCT/IB1999/001478 WO2000012033A1 (en) 1998-08-28 1999-08-26 Expandable interbody fusion cage
US09949516 US20020045945A1 (en) 1998-08-28 2001-09-07 Expandable interbody fusion cage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09949516 US20020045945A1 (en) 1998-08-28 2001-09-07 Expandable interbody fusion cage
US10890640 US7431735B2 (en) 1998-08-28 2004-07-14 Expandable interbody fusion cage

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US09763073 Continuation US6436140B1 (en) 1998-08-28 1999-08-26 Expandable interbody fusion cage and method for insertion

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10890640 Continuation US7431735B2 (en) 1998-08-28 2004-07-14 Expandable interbody fusion cage

Publications (1)

Publication Number Publication Date
US20020045945A1 true true US20020045945A1 (en) 2002-04-18

Family

ID=9529966

Family Applications (3)

Application Number Title Priority Date Filing Date
US09763073 Expired - Fee Related US6436140B1 (en) 1998-08-28 1999-08-26 Expandable interbody fusion cage and method for insertion
US09949516 Abandoned US20020045945A1 (en) 1998-08-28 2001-09-07 Expandable interbody fusion cage
US10890640 Active 2022-10-09 US7431735B2 (en) 1998-08-28 2004-07-14 Expandable interbody fusion cage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US09763073 Expired - Fee Related US6436140B1 (en) 1998-08-28 1999-08-26 Expandable interbody fusion cage and method for insertion

Family Applications After (1)

Application Number Title Priority Date Filing Date
US10890640 Active 2022-10-09 US7431735B2 (en) 1998-08-28 2004-07-14 Expandable interbody fusion cage

Country Status (7)

Country Link
US (3) US6436140B1 (en)
JP (1) JP4204200B2 (en)
DE (2) DE69921485T2 (en)
EP (1) EP1107711B1 (en)
ES (1) ES2230879T3 (en)
FR (1) FR2782632B1 (en)
WO (1) WO2000012033A1 (en)

Cited By (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040249466A1 (en) * 1998-08-28 2004-12-09 Mingyan Liu Expandable interbody fusion cage
US20050113916A1 (en) * 2003-11-21 2005-05-26 Branch Charles L.Jr. Expandable spinal implant
US20050283244A1 (en) * 2003-08-05 2005-12-22 Gordon Charles R Method of insertion of an expandable intervertebral implant
US20060030943A1 (en) * 2004-07-23 2006-02-09 Marc Peterman Expandable spinal implant having interlocking geometry for structural support
EP1658830A1 (en) * 2004-10-05 2006-05-24 Li Kung-Chia Distractable body augmeter capable of being planted through a pedicle for vertebral body reconstruction
US20060247635A1 (en) * 2003-08-05 2006-11-02 Gordon Charles R Dynamic posterior stabilization systems and methods of use
US20100057208A1 (en) * 2005-01-20 2010-03-04 Dryer Randall F Expandable spinal fusion cage and associated instrumentation
US20100064045A1 (en) * 2007-05-10 2010-03-11 Teliasonera Ab Handing a request relating to a service
US7828849B2 (en) 2003-02-03 2010-11-09 Warsaw Orthopedic, Inc. Expanding interbody implant and articulating inserter and method
US7887595B1 (en) * 2005-12-05 2011-02-15 Nuvasive, Inc. Methods and apparatus for spinal fusion
US20110093074A1 (en) * 2009-10-15 2011-04-21 Chad Glerum Expandable Fusion Device and Method of Installation Thereof
US20110238184A1 (en) * 1995-03-27 2011-09-29 Thomas Zdeblick Methods and instruments for interbody fusion
US8118869B2 (en) 2006-03-08 2012-02-21 Flexuspine, Inc. Dynamic interbody device
US8157844B2 (en) 2007-10-22 2012-04-17 Flexuspine, Inc. Dampener system for a posterior stabilization system with a variable length elongated member
US8162994B2 (en) 2007-10-22 2012-04-24 Flexuspine, Inc. Posterior stabilization system with isolated, dual dampener systems
US8182514B2 (en) 2007-10-22 2012-05-22 Flexuspine, Inc. Dampener system for a posterior stabilization system with a fixed length elongated member
US8187330B2 (en) 2007-10-22 2012-05-29 Flexuspine, Inc. Dampener system for a posterior stabilization system with a variable length elongated member
US8267965B2 (en) 2007-10-22 2012-09-18 Flexuspine, Inc. Spinal stabilization systems with dynamic interbody devices
US8377098B2 (en) 2007-01-19 2013-02-19 Flexuspine, Inc. Artificial functional spinal unit system and method for use
US8518120B2 (en) 2009-10-15 2013-08-27 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8523912B2 (en) 2007-10-22 2013-09-03 Flexuspine, Inc. Posterior stabilization systems with shared, dual dampener systems
US8556979B2 (en) 2009-10-15 2013-10-15 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8641769B2 (en) 2010-07-15 2014-02-04 Spine Wave, Inc. Plastically deformable inter-osseous device
US8685098B2 (en) 2010-06-25 2014-04-01 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8709086B2 (en) 2009-10-15 2014-04-29 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8771277B2 (en) 2012-05-08 2014-07-08 Globus Medical, Inc Device and a method for implanting a spinous process fixation device
US8845728B1 (en) 2011-09-23 2014-09-30 Samy Abdou Spinal fixation devices and methods of use
US8845731B2 (en) 2010-09-03 2014-09-30 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8845734B2 (en) 2010-09-03 2014-09-30 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8852279B2 (en) 2010-09-03 2014-10-07 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8864833B2 (en) 2011-09-30 2014-10-21 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8876866B2 (en) 2010-12-13 2014-11-04 Globus Medical, Inc. Spinous process fusion devices and methods thereof
US8940051B2 (en) 2011-03-25 2015-01-27 Flexuspine, Inc. Interbody device insertion systems and methods
US8998992B2 (en) 2008-08-29 2015-04-07 Globus Medical, Inc. Devices and methods for treating bone
US20150100128A1 (en) * 2009-10-15 2015-04-09 Globus Medical, Inc. Expandable Fusion Device and Method of Installation Thereof
US9011493B2 (en) 2012-12-31 2015-04-21 Globus Medical, Inc. Spinous process fixation system and methods thereof
US9034045B2 (en) 2013-03-15 2015-05-19 Globus Medical, Inc Expandable intervertebral implant
US9125757B2 (en) 2010-09-03 2015-09-08 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9149367B2 (en) 2013-03-15 2015-10-06 Globus Medical Inc Expandable intervertebral implant
US9155628B2 (en) 2009-10-15 2015-10-13 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9186258B2 (en) 2013-03-15 2015-11-17 Globus Medical, Inc. Expandable intervertebral implant
US9198772B2 (en) 2013-03-01 2015-12-01 Globus Medical, Inc. Articulating expandable intervertebral implant
US9198697B2 (en) 2013-03-13 2015-12-01 Globus Medical, Inc. Spinous process fixation system and methods thereof
US9204972B2 (en) 2013-03-01 2015-12-08 Globus Medical, Inc. Articulating expandable intervertebral implant
US9216096B2 (en) 2010-03-16 2015-12-22 Pinnacle Spine Group, Llc Intervertebral implants and related tools
US9216095B2 (en) 2009-10-15 2015-12-22 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9233009B2 (en) 2013-03-15 2016-01-12 Globus Medical, Inc. Expandable intervertebral implant
US9351848B2 (en) 2010-09-03 2016-05-31 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9358129B2 (en) 2010-09-03 2016-06-07 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9370434B2 (en) 2010-09-03 2016-06-21 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9380932B1 (en) 2011-11-02 2016-07-05 Pinnacle Spine Group, Llc Retractor devices for minimally invasive access to the spine
US9402739B2 (en) 2014-02-07 2016-08-02 Globus Medical, Inc. Variable lordosis spacer and related methods of use
US9402738B2 (en) 2013-02-14 2016-08-02 Globus Medical, Inc. Devices and methods for correcting vertebral misalignment
US9456906B2 (en) 2013-03-15 2016-10-04 Globus Medical, Inc. Expandable intervertebral implant
US9474625B2 (en) 2010-09-03 2016-10-25 Globus Medical, Inc Expandable fusion device and method of installation thereof
US9486251B2 (en) 2012-12-31 2016-11-08 Globus Medical, Inc. Spinous process fixation system and methods thereof
US9492288B2 (en) 2013-02-20 2016-11-15 Flexuspine, Inc. Expandable fusion device for positioning between adjacent vertebral bodies
US9492283B2 (en) 2010-01-12 2016-11-15 Globus Medical, Inc. Expandable spacer and method of use thereof
US9517144B2 (en) 2014-04-24 2016-12-13 Exactech, Inc. Limited profile intervertebral implant with incorporated fastening mechanism
US9526627B2 (en) 2011-11-17 2016-12-27 Exactech, Inc. Expandable interbody device system and method
US9554918B2 (en) 2013-03-01 2017-01-31 Globus Medical, Inc. Articulating expandable intervertebral implant
US9566168B2 (en) 2010-09-03 2017-02-14 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9585765B2 (en) 2013-02-14 2017-03-07 Globus Medical, Inc Devices and methods for correcting vertebral misalignment
US9597200B2 (en) 2010-06-25 2017-03-21 Globus Medical, Inc Expandable fusion device and method of installation thereof
US9622878B2 (en) * 2014-11-12 2017-04-18 Robert Thomas Grotz Universally expanding cage
US9662224B2 (en) 2014-02-07 2017-05-30 Globus Medical, Inc. Variable lordosis spacer and related methods of use
US9770343B2 (en) 2013-03-01 2017-09-26 Globus Medical Inc. Articulating expandable intervertebral implant
US9782265B2 (en) 2013-02-15 2017-10-10 Globus Medical, Inc Articulating and expandable vertebral implant
US9788971B1 (en) 2013-05-22 2017-10-17 Nuvasive, Inc. Expandable fusion implant and related methods
US9801734B1 (en) 2013-08-09 2017-10-31 Nuvasive, Inc. Lordotic expandable interbody implant
US9839528B2 (en) 2014-02-07 2017-12-12 Globus Medical, Inc. Variable lordosis spacer and related methods of use
US9848996B2 (en) 2015-06-17 2017-12-26 Globus Medical, Inc. Variable lordotic interbody spacer
US9855151B2 (en) 2010-09-03 2018-01-02 Globus Medical, Inc Expandable fusion device and method of installation thereof

Families Citing this family (222)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753368B1 (en) 1996-09-13 1999-01-08 Chauvin Jean Luc Cage expansive osteosynthesis
US6068630A (en) 1997-01-02 2000-05-30 St. Francis Medical Technologies, Inc. Spine distraction implant
US20080086212A1 (en) 1997-01-02 2008-04-10 St. Francis Medical Technologies, Inc. Spine distraction implant
US20080215058A1 (en) 1997-01-02 2008-09-04 Zucherman James F Spine distraction implant and method
US6117174A (en) * 1998-09-16 2000-09-12 Nolan; Wesley A. Spinal implant device
US6520991B2 (en) * 1999-05-11 2003-02-18 Donald R. Huene Expandable implant for inter-vertebral stabilization, and a method of stabilizing vertebrae
US6419705B1 (en) 1999-06-23 2002-07-16 Sulzer Spine-Tech Inc. Expandable fusion device and method
US6709458B2 (en) 2000-02-04 2004-03-23 Gary Karlin Michelson Expandable push-in arcuate interbody spinal fusion implant with tapered configuration during insertion
US6716247B2 (en) 2000-02-04 2004-04-06 Gary K. Michelson Expandable push-in interbody spinal fusion implant
EP1645248B8 (en) * 2000-02-04 2010-06-16 Warsaw Orthopedic, Inc. Expandable interbody spinal fusion implant having pivotally attached blocker
US6808537B2 (en) 2000-07-07 2004-10-26 Gary Karlin Michelson Expandable implant with interlocking walls
US6814756B1 (en) 2000-02-04 2004-11-09 Gary K. Michelson Expandable threaded arcuate interbody spinal fusion implant with lordotic configuration during insertion
US6558390B2 (en) 2000-02-16 2003-05-06 Axiamed, Inc. Methods and apparatus for performing therapeutic procedures in the spine
US6790210B1 (en) 2000-02-16 2004-09-14 Trans1, Inc. Methods and apparatus for forming curved axial bores through spinal vertebrae
DE60321720D1 (en) 2000-02-16 2008-07-31 Trans1 Inc Apparatus for wirbelsäulendistraktion and fusion
US7727263B2 (en) 2000-02-16 2010-06-01 Trans1, Inc. Articulating spinal implant
DE50109876D1 (en) * 2000-03-31 2006-06-29 Koenigsee Implantate & Instr The height-adjustable vertebral body implant and betätigungsinstrumentenset for
US6821298B1 (en) * 2000-04-18 2004-11-23 Roger P. Jackson Anterior expandable spinal fusion cage system
US6500205B1 (en) * 2000-04-19 2002-12-31 Gary K. Michelson Expandable threaded arcuate interbody spinal fusion implant with cylindrical configuration during insertion
US6723128B2 (en) * 2000-10-17 2004-04-20 Chang Jong Uk Prosthetic device for correcting deformity of spine
FR2816201B1 (en) * 2000-11-07 2003-08-01 Medicrea Intervertebral cage and instrument set-up of this cage between two vertebrae
US6666891B2 (en) 2000-11-13 2003-12-23 Frank H. Boehm, Jr. Device and method for lumbar interbody fusion
US6773460B2 (en) * 2000-12-05 2004-08-10 Roger P. Jackson Anterior variable expandable fusion cage
US20020169507A1 (en) 2000-12-14 2002-11-14 David Malone Interbody spine fusion cage
EP1272130B1 (en) 2001-02-04 2004-11-17 MICHELSON, Gary Karlin Instrumentation for inserting and deploying an expandable interbody spinal fusion implant
US6849093B2 (en) * 2001-03-09 2005-02-01 Gary K. Michelson Expansion constraining member adapted for use with an expandable interbody spinal fusion implant and method for use thereof
US7128760B2 (en) 2001-03-27 2006-10-31 Warsaw Orthopedic, Inc. Radially expanding interbody spinal fusion implants, instrumentation, and methods of insertion
CA2443001A1 (en) 2001-04-04 2002-10-17 Lawrence G. Rapp Interbody spinal fusion device
FR2824261B1 (en) 2001-05-04 2004-05-28 Ldr Medical intervertebral disc prosthesis and method and implementation tools
FR2827156B1 (en) 2001-07-13 2003-11-14 Ldr Medical A spinal cage modular fixture with
ES2211253B1 (en) * 2001-08-16 2005-11-01 Industrias Quirurgicas De Levante, S.L. intersomatic cage for posterior fusion surgery of the lumbar spine.
US6648917B2 (en) * 2001-10-17 2003-11-18 Medicinelodge, Inc. Adjustable bone fusion implant and method
US6923830B2 (en) * 2002-02-02 2005-08-02 Gary K. Michelson Spinal fusion implant having deployable bone engaging projections
US20040010315A1 (en) * 2002-03-29 2004-01-15 Song John K. Self-expanding intervertebral device
US8388684B2 (en) 2002-05-23 2013-03-05 Pioneer Signal Technology, Inc. Artificial disc device
US7001433B2 (en) 2002-05-23 2006-02-21 Pioneer Laboratories, Inc. Artificial intervertebral disc device
US20080021468A1 (en) 2002-10-29 2008-01-24 Zucherman James F Interspinous process implants and methods of use
FR2846550B1 (en) 2002-11-05 2006-01-13 Ldr Medical Prothese of intervertebral disc
CA2505468A1 (en) * 2002-11-21 2004-06-10 Sdgi Holdings, Inc. Systems and techniques for interbody spinal stablization with expandable devices
WO2004047689A1 (en) * 2002-11-21 2004-06-10 Sdgi Holdings, Inc. Systems and techniques for intravertebral spinal stablization with expandable devices
DE602004018903D1 (en) 2003-02-14 2009-02-26 Depuy Spine Inc intervertebral fusion device prepared in situ
US8012212B2 (en) * 2003-04-07 2011-09-06 Nuvasive, Inc. Cervical intervertebral disk prosthesis
DE502004000169D1 (en) 2003-05-14 2006-01-12 Kilian Kraus Height adjustable implant for use between vertebral bodies and handling tool
US8048117B2 (en) 2003-05-22 2011-11-01 Kyphon Sarl Interspinous process implant and method of implantation
US7549999B2 (en) * 2003-05-22 2009-06-23 Kyphon Sarl Interspinous process distraction implant and method of implantation
US8007474B2 (en) * 2003-06-16 2011-08-30 Ethicon Endo-Surgery, Inc. Implantable medical device with reversible attachment mechanism and method
US7909869B2 (en) * 2003-08-05 2011-03-22 Flexuspine, Inc. Artificial spinal unit assemblies
WO2005041793A3 (en) 2003-10-23 2005-11-10 Steven D Ainsworth Spinal mobility preservation apparatus and method
JP2007516738A (en) 2003-10-23 2007-06-28 トランスワン インコーポレイティッド Tools and tool kits for performing minimal intrusion process to the spine
US7837732B2 (en) 2003-11-20 2010-11-23 Warsaw Orthopedic, Inc. Intervertebral body fusion cage with keels and implantation methods
US7691146B2 (en) 2003-11-21 2010-04-06 Kyphon Sarl Method of laterally inserting an artificial vertebral disk replacement implant with curved spacer
US6955691B2 (en) * 2003-11-21 2005-10-18 Kyungwon Medical Co., Ltd. Expandable interfusion cage
US7569074B2 (en) 2003-12-11 2009-08-04 Warsaw Orthopedic, Inc. Expandable intervertebral implant
DE10357926B3 (en) 2003-12-11 2005-09-01 Deltacor Gmbh Length-adjustable spinal implant
FR2865629B1 (en) 2004-02-04 2007-01-26 Ldr Medical Prothese of intervertebral disc
ES2357270T3 (en) 2004-02-13 2011-04-20 Jun. Franz Copf spondylodesis intervertebral implant for the lumbar spine.
FR2866229B1 (en) * 2004-02-17 2006-05-19 Kiscomedica Adjustable lumbar cage posteriorly
FR2869528B1 (en) 2004-04-28 2007-02-02 Ldr Medical Prothese of intervertebral disc
EP1748739A1 (en) * 2004-05-19 2007-02-07 Sintea Biotech S.p.A. Intravertebral widening device, injection device , and kit and method for kyphoplasty
US7621952B2 (en) * 2004-06-07 2009-11-24 Dfine, Inc. Implants and methods for treating bone
FR2871366A1 (en) * 2004-06-09 2005-12-16 Ceravic Soc Par Actions Simpli expandable prosthetic bone implant
US7297162B2 (en) * 2004-06-09 2007-11-20 Zimmer Spine, Inc. Expandable helical cage
US7905920B2 (en) * 2004-08-19 2011-03-15 Foster-Miller, Inc. Support system for intervertebral fusion
US7799081B2 (en) 2004-09-14 2010-09-21 Aeolin, Llc System and method for spinal fusion
WO2006034436A3 (en) 2004-09-21 2006-10-19 Stout Medical Group Lp Expandable support device and method of use
US20060129244A1 (en) * 2004-10-25 2006-06-15 Alphaspine, Inc. Expandable intervertebral spacer method and apparatus
US20060095136A1 (en) * 2004-11-03 2006-05-04 Mcluen Design, Inc. Bone fusion device
US8597360B2 (en) 2004-11-03 2013-12-03 Neuropro Technologies, Inc. Bone fusion device
US8048083B2 (en) 2004-11-05 2011-11-01 Dfine, Inc. Bone treatment systems and methods
FR2879436B1 (en) 2004-12-22 2007-03-09 Ldr Medical Prothese of intervertebral disc
US8057513B2 (en) 2005-02-17 2011-11-15 Kyphon Sarl Percutaneous spinal implants and methods
US8038698B2 (en) 2005-02-17 2011-10-18 Kphon Sarl Percutaneous spinal implants and methods
US8096994B2 (en) 2005-02-17 2012-01-17 Kyphon Sarl Percutaneous spinal implants and methods
US7988709B2 (en) 2005-02-17 2011-08-02 Kyphon Sarl Percutaneous spinal implants and methods
US20060184248A1 (en) * 2005-02-17 2006-08-17 Edidin Avram A Percutaneous spinal implants and methods
US8029567B2 (en) 2005-02-17 2011-10-04 Kyphon Sarl Percutaneous spinal implants and methods
US20070276493A1 (en) 2005-02-17 2007-11-29 Malandain Hugues F Percutaneous spinal implants and methods
US8097018B2 (en) 2005-02-17 2012-01-17 Kyphon Sarl Percutaneous spinal implants and methods
US8100943B2 (en) 2005-02-17 2012-01-24 Kyphon Sarl Percutaneous spinal implants and methods
US8034080B2 (en) 2005-02-17 2011-10-11 Kyphon Sarl Percutaneous spinal implants and methods
US8096995B2 (en) * 2005-02-17 2012-01-17 Kyphon Sarl Percutaneous spinal implants and methods
US8007521B2 (en) 2005-02-17 2011-08-30 Kyphon Sarl Percutaneous spinal implants and methods
US8157841B2 (en) 2005-02-17 2012-04-17 Kyphon Sarl Percutaneous spinal implants and methods
US7998174B2 (en) 2005-02-17 2011-08-16 Kyphon Sarl Percutaneous spinal implants and methods
US7591853B2 (en) 2005-03-09 2009-09-22 Vertebral Technologies, Inc. Rail-based modular disc nucleus prosthesis
US7749252B2 (en) 2005-03-21 2010-07-06 Kyphon Sarl Interspinous process implant having deployable wing and method of implantation
US8147548B2 (en) 2005-03-21 2012-04-03 Kyphon Sarl Interspinous process implant having a thread-shaped wing and method of implantation
US8034079B2 (en) 2005-04-12 2011-10-11 Warsaw Orthopedic, Inc. Implants and methods for posterior dynamic stabilization of a spinal motion segment
US7959652B2 (en) * 2005-04-18 2011-06-14 Kyphon Sarl Interspinous process implant having deployable wings and method of implantation
US7674296B2 (en) 2005-04-21 2010-03-09 Globus Medical, Inc. Expandable vertebral prosthesis
US7749270B2 (en) 2005-04-29 2010-07-06 Warsaw Orthopedic, Inc. Expandable intervertebral implant and associated instrumentation
US7727233B2 (en) 2005-04-29 2010-06-01 Warsaw Orthopedic, Inc. Spinous process stabilization devices and methods
US8147547B2 (en) * 2005-04-29 2012-04-03 Warsaw Orthopedic, Inc. Spinal implant
US7951199B2 (en) 2005-06-15 2011-05-31 Miller Jimmy D Lateral expandable interbody fusion cage
WO2007009107A3 (en) 2005-07-14 2008-08-07 Scott E Greenhalgh Expandable support device and method of use
USD741488S1 (en) 2006-07-17 2015-10-20 Nuvasive, Inc. Spinal fusion implant
US8623088B1 (en) 2005-07-15 2014-01-07 Nuvasive, Inc. Spinal fusion implant and related methods
US7722674B1 (en) * 2005-08-12 2010-05-25 Innvotec Surgical Inc. Linearly expanding spine cage for enhanced spinal fusion
US7785368B2 (en) 2005-08-16 2010-08-31 Benvenue Medical, Inc. Spinal tissue distraction devices
US8366773B2 (en) 2005-08-16 2013-02-05 Benvenue Medical, Inc. Apparatus and method for treating bone
FR2891135B1 (en) 2005-09-23 2008-09-12 Ldr Medical Sarl Prothese of intervertebral disc
FR2893838B1 (en) 2005-11-30 2008-08-08 Ldr Medical Soc Par Actions Si intervertebral disk prosthesis and instrumentation for inserting the prosthesis between the vertebrae
US20070162127A1 (en) * 2005-12-08 2007-07-12 Sdgi Holdings, Inc. Instruments and techniques for delivering non-rigid implant members in surgical procedures
US20070135921A1 (en) * 2005-12-09 2007-06-14 Park Kee B Surgical implant
US8083795B2 (en) 2006-01-18 2011-12-27 Warsaw Orthopedic, Inc. Intervertebral prosthetic device for spinal stabilization and method of manufacturing same
US20070233250A1 (en) * 2006-02-07 2007-10-04 Shadduck John H Systems for treating bone
FR2897259B1 (en) 2006-02-15 2008-05-09 Ldr Medical Soc Par Actions Si Transforaminal interbody fusion cage has intervetebrale graft and implanting tool of the cage
US8262698B2 (en) 2006-03-16 2012-09-11 Warsaw Orthopedic, Inc. Expandable device for insertion between anatomical structures and a procedure utilizing same
US20070270863A1 (en) * 2006-04-20 2007-11-22 Sdgi Holdings, Inc. Devices and methods for contouring an intervertebral space between vertebral members
US20070270960A1 (en) * 2006-04-24 2007-11-22 Sdgi Holdings, Inc. Extendable anchor in a vertebral implant and methods of use
US8657882B2 (en) * 2006-04-24 2014-02-25 Warsaw Orthopedic, Inc. Expandable intervertebral devices and methods of use
US8118844B2 (en) 2006-04-24 2012-02-21 Warsaw Orthopedic, Inc. Expandable device for insertion between anatomical structures and a procedure utilizing same
US8048118B2 (en) 2006-04-28 2011-11-01 Warsaw Orthopedic, Inc. Adjustable interspinous process brace
US8048119B2 (en) 2006-07-20 2011-11-01 Warsaw Orthopedic, Inc. Apparatus for insertion between anatomical structures and a procedure utilizing same
US8034110B2 (en) 2006-07-31 2011-10-11 Depuy Spine, Inc. Spinal fusion implant
US9526525B2 (en) 2006-08-22 2016-12-27 Neuropro Technologies, Inc. Percutaneous system for dynamic spinal stabilization
US8167619B2 (en) * 2006-09-03 2012-05-01 Dentack Implants Ltd. Expandable dental implants of high surface area and methods of expanding the same
US20080086115A1 (en) 2006-09-07 2008-04-10 Warsaw Orthopedic, Inc. Intercostal spacer device and method for use in correcting a spinal deformity
US8506636B2 (en) 2006-09-08 2013-08-13 Theken Spine, Llc Offset radius lordosis
WO2008033457A3 (en) * 2006-09-14 2008-09-04 Ashok Biyani Variable height vertebral body replacement implant
WO2008034135A3 (en) 2006-09-15 2008-07-24 Pioneer Surgical Tech Inc Joint arthroplasty devices having articulating members
US8715350B2 (en) 2006-09-15 2014-05-06 Pioneer Surgical Technology, Inc. Systems and methods for securing an implant in intervertebral space
US8097019B2 (en) 2006-10-24 2012-01-17 Kyphon Sarl Systems and methods for in situ assembly of an interspinous process distraction implant
FR2908035B1 (en) 2006-11-08 2009-05-01 Jean Taylor interspinous implant
US9737414B2 (en) 2006-11-21 2017-08-22 Vertebral Technologies, Inc. Methods and apparatus for minimally invasive modular interbody fusion devices
US7955392B2 (en) 2006-12-14 2011-06-07 Warsaw Orthopedic, Inc. Interspinous process devices and methods
US7972382B2 (en) 2006-12-26 2011-07-05 Warsaw Orthopedic, Inc. Minimally invasive spinal distraction devices and methods
US8465546B2 (en) 2007-02-16 2013-06-18 Ldr Medical Intervertebral disc prosthesis insertion assemblies
EP2124777A4 (en) 2007-02-21 2013-06-05 Benvenue Medical Inc Devices for treating the spine
EP2124778A4 (en) 2007-02-21 2013-03-20 Benvenue Medical Inc Devices for treating the spine
FR2914180B1 (en) * 2007-03-28 2010-02-12 David Attia Expansive cage for spinal surgery.
US8241358B2 (en) * 2007-03-29 2012-08-14 Life Spine, Inc. Radially expandable spinal interbody device and implantation tool
US9138328B2 (en) 2007-03-29 2015-09-22 Life Spine, Inc. Radially expandable spinal interbody device and implantation tool
US9610172B2 (en) 2007-03-29 2017-04-04 Life Spine, Inc. Radially expandable spinal interbody device and implantation tool
FR2916956B1 (en) 2007-06-08 2012-12-14 Ldr Medical The intersomatic cage, intervertebral prosthesis, the anchoring device and implant instrumentation
US8900307B2 (en) 2007-06-26 2014-12-02 DePuy Synthes Products, LLC Highly lordosed fusion cage
US7985231B2 (en) 2007-12-31 2011-07-26 Kyphon Sarl Bone fusion device and methods
US7799056B2 (en) 2007-12-31 2010-09-21 Warsaw Orthopedic, Inc. Bone fusion device and methods
JP5441922B2 (en) 2008-01-17 2014-03-12 ジンテス ゲゼルシャフト ミット ベシュレンクテル ハフツング A process for producing the same implants and related inter-inflatable vertebral
US20090198245A1 (en) * 2008-02-04 2009-08-06 Phan Christopher U Tools and methods for insertion and removal of medical implants
US20090198338A1 (en) 2008-02-04 2009-08-06 Phan Christopher U Medical implants and methods
US8267939B2 (en) 2008-02-28 2012-09-18 Stryker Spine Tool for implanting expandable intervertebral implant
US8114136B2 (en) 2008-03-18 2012-02-14 Warsaw Orthopedic, Inc. Implants and methods for inter-spinous process dynamic stabilization of a spinal motion segment
US8795365B2 (en) * 2008-03-24 2014-08-05 Warsaw Orthopedic, Inc Expandable devices for emplacement in body parts and methods associated therewith
WO2009124269A1 (en) 2008-04-05 2009-10-08 Synthes Usa, Llc Expandable intervertebral implant
WO2009125242A1 (en) 2008-04-08 2009-10-15 Vexim Apparatus for restoration of the spine and methods of use thereof
ES2361099B1 (en) * 2008-05-26 2012-05-08 Rudolf Morgenstern Lopez "Intervertebral prosthesis"
US20090299478A1 (en) * 2008-06-03 2009-12-03 Warsaw Orthopedic, Inc. Lordotic Implant for Posterior Approach
US8110004B2 (en) * 2008-08-21 2012-02-07 The Trustees Of The Stevens Institute Of Technology Expandable interbody fusion cage with rotational insert
US8114131B2 (en) 2008-11-05 2012-02-14 Kyphon Sarl Extension limiting devices and methods of use for the spine
US20100161057A1 (en) * 2008-12-19 2010-06-24 Amicus, Llc Interbody Vertebral Prosthetic Device With Self-Deploying Screws
US8721723B2 (en) 2009-01-12 2014-05-13 Globus Medical, Inc. Expandable vertebral prosthesis
US8968405B2 (en) * 2009-01-20 2015-03-03 Incite Innovation Llc Interbody fusion device and method of operation
US20100262245A1 (en) * 2009-02-18 2010-10-14 Alfaro Arthur A Intervertebral spacer
US8535327B2 (en) 2009-03-17 2013-09-17 Benvenue Medical, Inc. Delivery apparatus for use with implantable medical devices
US8628577B1 (en) 2009-03-19 2014-01-14 Ex Technology, Llc Stable device for intervertebral distraction and fusion
US9526620B2 (en) 2009-03-30 2016-12-27 DePuy Synthes Products, Inc. Zero profile spinal fusion cage
US20100286777A1 (en) * 2009-05-08 2010-11-11 Stryker Spine Stand alone anterior cage
US8372117B2 (en) 2009-06-05 2013-02-12 Kyphon Sarl Multi-level interspinous implants and methods of use
US8157842B2 (en) 2009-06-12 2012-04-17 Kyphon Sarl Interspinous implant and methods of use
US8906060B2 (en) * 2009-06-24 2014-12-09 Karl Storz Gmbh & Co. Kg Method and apparatus for soft tissue fixation to bone
US8974508B2 (en) 2009-07-06 2015-03-10 DePuy Synthes Products, LLC Expandable fixation assemblies
CN102596109B (en) 2009-09-17 2015-10-21 Ldr控股公司 Intervertebral implant having a bone fixation member extendable
USD731063S1 (en) 2009-10-13 2015-06-02 Nuvasive, Inc. Spinal fusion implant
US8764806B2 (en) 2009-12-07 2014-07-01 Samy Abdou Devices and methods for minimally invasive spinal stabilization and instrumentation
US9168138B2 (en) 2009-12-09 2015-10-27 DePuy Synthes Products, Inc. Aspirating implants and method of bony regeneration
RU2573945C2 (en) 2009-12-31 2016-01-27 Лдр Медикал Fastening device, intervertebral implant and device for implantation
US8317831B2 (en) 2010-01-13 2012-11-27 Kyphon Sarl Interspinous process spacer diagnostic balloon catheter and methods of use
US8114132B2 (en) 2010-01-13 2012-02-14 Kyphon Sarl Dynamic interspinous process device
US8147526B2 (en) 2010-02-26 2012-04-03 Kyphon Sarl Interspinous process spacer diagnostic parallel balloon catheter and methods of use
US8282683B2 (en) 2010-04-12 2012-10-09 Globus Medical, Inc. Expandable vertebral implant
US8591585B2 (en) 2010-04-12 2013-11-26 Globus Medical, Inc. Expandable vertebral implant
US20110269103A1 (en) * 2010-04-30 2011-11-03 Warsaw Orthopedic, Inc. Expandable implant
US8535380B2 (en) 2010-05-13 2013-09-17 Stout Medical Group, L.P. Fixation device and method
US8979860B2 (en) 2010-06-24 2015-03-17 DePuy Synthes Products. LLC Enhanced cage insertion device
JP5850930B2 (en) 2010-06-29 2016-02-03 ジンテス ゲゼルシャフト ミット ベシュレンクテル ハフツング Away from the intervertebral implant
US9241810B1 (en) * 2010-07-12 2016-01-26 Spinesmith Partners, L.P. Fusion device and associated methods
EP2593043A2 (en) 2010-07-15 2013-05-22 NLT Spine Ltd. Surgical systems for implanting expandable implants
US8778025B2 (en) * 2010-08-02 2014-07-15 Ashraf A. Ragab Rotatable cam lift for an expandable bone cage
US8496706B2 (en) * 2010-08-02 2013-07-30 Ashraf A. Ragab Bone cage with components for controlled expansion
US9149286B1 (en) 2010-11-12 2015-10-06 Flexmedex, LLC Guidance tool and method for use
US9358122B2 (en) 2011-01-07 2016-06-07 K2M, Inc. Interbody spacer
US8591548B2 (en) 2011-03-31 2013-11-26 Warsaw Orthopedic, Inc. Spinous process fusion plate assembly
JP5847289B2 (en) 2011-04-07 2016-01-20 ヴェクシム ソシエテアノニム Expandable orthopedic equipment
US8591549B2 (en) 2011-04-08 2013-11-26 Warsaw Orthopedic, Inc. Variable durometer lumbar-sacral implant
US8685095B2 (en) 2011-04-19 2014-04-01 Warsaw Orthopedic, Inc. Expandable implant system and methods of use
US8814873B2 (en) 2011-06-24 2014-08-26 Benvenue Medical, Inc. Devices and methods for treating bone tissue
US9358123B2 (en) 2011-08-09 2016-06-07 Neuropro Spinal Jaxx, Inc. Bone fusion device, apparatus and method
JP6047571B2 (en) 2011-08-16 2016-12-21 ストライカー・スピン Expandable graft
EP2747682A4 (en) 2011-08-23 2015-01-21 Flexmedex Llc Tissue removal device and method
US8460388B2 (en) 2011-10-28 2013-06-11 Incite Innovation Llc Spinal interbody device
US9138220B2 (en) * 2011-12-19 2015-09-22 Medos International Sarl Knotless suture anchor
US8628578B2 (en) 2011-12-19 2014-01-14 Warsaw Orthopedic, Inc. Expandable interbody implant and methods of use
US9445919B2 (en) 2011-12-19 2016-09-20 Warsaw Orthopedic, Inc. Expandable interbody implant and methods of use
US9198769B2 (en) 2011-12-23 2015-12-01 Pioneer Surgical Technology, Inc. Bone anchor assembly, bone plate system, and method
FR2987256B1 (en) 2012-02-24 2014-08-08 Ldr Medical An anchoring device for intervertebral implant, intervertebral implant and implant instrumentation
US9510953B2 (en) 2012-03-16 2016-12-06 Vertebral Technologies, Inc. Modular segmented disc nucleus implant
US9566165B2 (en) 2012-03-19 2017-02-14 Amicus Design Group, Llc Interbody vertebral prosthetic and orthopedic fusion device with self-deploying anchors
JP5913727B2 (en) 2012-03-19 2016-04-27 アミカス デザイン グループ、エルエルシー Interbody spinal prosthetic shaping fixing device using a self-extracting anchor
US9693876B1 (en) 2012-03-30 2017-07-04 Ali H. MESIWALA Spinal fusion implant and related methods
US9532883B2 (en) 2012-04-13 2017-01-03 Neuropro Technologies, Inc. Bone fusion device
US9622876B1 (en) 2012-04-25 2017-04-18 Theken Spine, Llc Expandable support device and method of use
CN104582639A (en) 2012-05-29 2015-04-29 Nlt-脊椎有限公司 Laterally deflectable implant
WO2014018098A1 (en) 2012-07-26 2014-01-30 DePuy Synthes Products, LLC Expandable implant
KR20150048150A (en) 2012-08-08 2015-05-06 제임스 씨 로빈슨 Expandable intervertebral cage assemblies and methods
US20140067069A1 (en) 2012-08-30 2014-03-06 Interventional Spine, Inc. Artificial disc
US9445918B1 (en) 2012-10-22 2016-09-20 Nuvasive, Inc. Expandable spinal fusion implants and related instruments and methods
EP2919718A4 (en) * 2012-11-16 2016-09-07 Lanx Inc Oblique expanding fusion cage device and method
US9717601B2 (en) 2013-02-28 2017-08-01 DePuy Synthes Products, Inc. Expandable intervertebral implant, system, kit and method
WO2014134614A9 (en) 2013-03-01 2014-12-04 Bones And Spine Surgery Inc. Minimally invasive method and surgical tools for trans-psoas approach
US9522070B2 (en) 2013-03-07 2016-12-20 Interventional Spine, Inc. Intervertebral implant
US20140257486A1 (en) * 2013-03-11 2014-09-11 Stryker Spine Expandable implant
WO2014159225A3 (en) 2013-03-14 2014-11-27 Baxano Surgical, Inc. Spinal implants and implantation system
CA2906531A1 (en) 2013-03-15 2014-09-25 Neuropro Technologies, Inc. Bodiless bone fusion device, apparatus and method
US20150018951A1 (en) 2013-07-09 2015-01-15 Nlt Spine Ltd. Orthopedic Implant with Adjustable Angle between Tissue Contact Surfaces
US9101489B2 (en) 2013-10-07 2015-08-11 Spine Wave, Inc. Expandable anterior lumbar interbody fusion device
US9820865B2 (en) 2013-10-31 2017-11-21 Nlt Spine Ltd. Adjustable implant
EP3079637A1 (en) 2013-12-11 2016-10-19 NLT Spine Ltd. Worm-gear actuated orthopedic implants&methods
FR3016793A1 (en) 2014-01-30 2015-07-31 Ldr Medical An anchoring device for spinal implant, spinal implant and implant instrumentation
US9486328B2 (en) * 2014-04-01 2016-11-08 Ex Technology, Llc Expandable intervertebral cage
EP3151788A4 (en) 2014-06-04 2018-01-17 Wenzel Spine Inc Bilaterally expanding intervertebral body fusion device
US9498347B2 (en) 2014-06-25 2016-11-22 Spine Wave, Inc. Expandable interbody fusion device with nested correction surface

Family Cites Families (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501269A (en) 1981-12-11 1985-02-26 Washington State University Research Foundation, Inc. Process for fusing bone joints
US4879915A (en) 1987-03-17 1989-11-14 Spencer R Wilson Sample injection means
US4743256A (en) 1985-10-04 1988-05-10 Brantigan John W Surgical prosthetic implant facilitating vertebral interbody fusion and method
US4834757A (en) 1987-01-22 1989-05-30 Brantigan John W Prosthetic implant
GB8620937D0 (en) 1986-08-29 1986-10-08 Shepperd J A N Spinal implant
DE3637314C2 (en) * 1986-11-03 1988-08-18 Lutz 7730 Villingen-Schwenningen De Biedermann
US4714469A (en) 1987-02-26 1987-12-22 Pfizer Hospital Products Group, Inc. Spinal implant
GB8718627D0 (en) * 1987-08-06 1987-09-09 Showell A W Sugicraft Ltd Spinal implants
US5015247A (en) 1988-06-13 1991-05-14 Michelson Gary K Threaded spinal implant
US5593409A (en) * 1988-06-13 1997-01-14 Sofamor Danek Group, Inc. Interbody spinal fusion implants
US5609635A (en) 1988-06-28 1997-03-11 Michelson; Gary K. Lordotic interbody spinal fusion implants
CA1333209C (en) 1988-06-28 1994-11-29 Gary Karlin Michelson Artificial spinal fusion implants
US4961740B1 (en) 1988-10-17 1997-01-14 Surgical Dynamics Inc V-thread fusion cage and method of fusing a bone joint
US5458638A (en) * 1989-07-06 1995-10-17 Spine-Tech, Inc. Non-threaded spinal implant
US5055104A (en) 1989-11-06 1991-10-08 Surgical Dynamics, Inc. Surgically implanting threaded fusion cages between adjacent low-back vertebrae by an anterior approach
US5059193A (en) 1989-11-20 1991-10-22 Spine-Tech, Inc. Expandable spinal implant and surgical method
US5236460A (en) 1990-02-12 1993-08-17 Midas Rex Pneumatic Tools, Inc. Vertebral body prosthesis
US5087199A (en) * 1990-07-27 1992-02-11 Sargon Lazarof Dental implant and method of using same
US5171278A (en) 1991-02-22 1992-12-15 Madhavan Pisharodi Middle expandable intervertebral disk implants
US5390683A (en) 1991-02-22 1995-02-21 Pisharodi; Madhavan Spinal implantation methods utilizing a middle expandable implant
DE69209494D1 (en) * 1991-02-22 1996-05-02 Pisharodi Madhavan Implant made of an expandable intervertebral disc
JPH06503155A (en) * 1991-06-25 1994-04-07
US5263953A (en) * 1991-12-31 1993-11-23 Spine-Tech, Inc. Apparatus and system for fusing bone joints
US5534031A (en) * 1992-01-28 1996-07-09 Asahi Kogaku Kogyo Kabushiki Kaisha Prosthesis for spanning a space formed upon removal of an intervertebral disk
EP0560249B1 (en) * 1992-03-09 1997-07-30 HOWMEDICA INTERNATIONAL Div.ne PFIZER ITALIANA S.p.A. Prosthesis for the correction of flatfoot
US5306309A (en) * 1992-05-04 1994-04-26 Calcitek, Inc. Spinal disk implant and implantation kit
EP0683651B1 (en) * 1993-02-10 1999-09-29 Sulzer Spine-Tech Inc. Spinal stabilization surgical tool set
US5423817A (en) * 1993-07-29 1995-06-13 Lin; Chih-I Intervertebral fusing device
FR2708461B1 (en) * 1993-08-06 1995-09-29 Advanced Technical Fabrication intersomatic implant for spine.
US5425772A (en) * 1993-09-20 1995-06-20 Brantigan; John W. Prosthetic implant for intervertebral spinal fusion
CN1156255C (en) * 1993-10-01 2004-07-07 美商-艾克罗米德公司 Spinal implant
US5443514A (en) * 1993-10-01 1995-08-22 Acromed Corporation Method for using spinal implants
US5397364A (en) * 1993-10-12 1995-03-14 Danek Medical, Inc. Anterior interbody fusion device
FR2715293B1 (en) 1994-01-26 1996-03-22 Biomat Vertebral intersomatic cage.
DE9407806U1 (en) 1994-05-11 1994-07-14 Aesculap Ag Intervertebral implant
US5489210A (en) * 1994-05-13 1996-02-06 Hanosh; Frederick N. Expanding dental implant and method for its use
JP3509103B2 (en) * 1994-05-23 2004-03-22 スルザー スパイン−テック インコーポレイテッド Implant for an intervertebral fusion
US5980522A (en) 1994-07-22 1999-11-09 Koros; Tibor Expandable spinal implants
US5665122A (en) 1995-01-31 1997-09-09 Kambin; Parviz Expandable intervertebral cage and surgical method
FR2730158B1 (en) 1995-02-06 1999-11-26 Jbs Sa Device for holding a normal spacing between the vertebrae and for the replacement of missing vertebrae
US5658335A (en) 1995-03-09 1997-08-19 Cohort Medical Products Group, Inc. Spinal fixator
US5782919A (en) * 1995-03-27 1998-07-21 Sdgi Holdings, Inc. Interbody fusion device and method for restoration of normal spinal anatomy
US5702391A (en) 1995-05-16 1997-12-30 Lin; Chih-I Intervertebral fusion device
WO1997000054A1 (en) * 1995-06-19 1997-01-03 Sven Olerud An adjustable spacing device and a method of adjusting the distance between two vertebrae with the aid of said spacing device in spinal surgical operations
DE19549426C2 (en) 1995-08-11 1997-10-09 Bernhard Zientek Intervertebral implant and instrument for this
US5683394A (en) * 1995-09-29 1997-11-04 Advanced Spine Fixation Systems, Inc. Fusion mass constrainer
US5709683A (en) * 1995-12-19 1998-01-20 Spine-Tech, Inc. Interbody bone implant having conjoining stabilization features for bony fusion
US5681167A (en) * 1996-01-05 1997-10-28 Lazarof; Sargon Dental assembly and process for preparing a tooth prosthesis
US5766253A (en) * 1996-01-16 1998-06-16 Surgical Dynamics, Inc. Spinal fusion device
US5702397A (en) * 1996-02-20 1997-12-30 Medicinelodge, Inc. Ligament bone anchor and method for its use
US5653763A (en) 1996-03-29 1997-08-05 Fastenetix, L.L.C. Intervertebral space shape conforming cage device
US5702455A (en) * 1996-07-03 1997-12-30 Saggar; Rahul Expandable prosthesis for spinal fusion
FR2753368B1 (en) 1996-09-13 1999-01-08 Chauvin Jean Luc Cage expansive osteosynthesis
US5782832A (en) 1996-10-01 1998-07-21 Surgical Dynamics, Inc. Spinal fusion implant and method of insertion thereof
US6190414B1 (en) * 1996-10-31 2001-02-20 Surgical Dynamics Inc. Apparatus for fusion of adjacent bone structures
ES2297898T3 (en) 1997-10-27 2008-05-01 St. Francis Medical Technologies, Inc. Distraccion vertebral implant.
US5713904A (en) 1997-02-12 1998-02-03 Third Millennium Engineering, Llc Selectively expandable sacral fixation screw-sleeve device
US6039761A (en) * 1997-02-12 2000-03-21 Li Medical Technologies, Inc. Intervertebral spacer and tool and method for emplacement thereof
KR100553297B1 (en) * 1997-04-25 2006-02-20 스뜨리케르 프랑스 Two-Part Intersomatic Implant
US6045579A (en) 1997-05-01 2000-04-04 Spinal Concepts, Inc. Adjustable height fusion device
US6126689A (en) * 1998-06-15 2000-10-03 Expanding Concepts, L.L.C. Collapsible and expandable interbody fusion device
US5865848A (en) * 1997-09-12 1999-02-02 Artifex, Ltd. Dynamic intervertebral spacer and method of use
DE19753685C1 (en) 1997-12-03 1999-09-16 Biedermann Motech Gmbh Intravertebral surgical implant
DE19807236C2 (en) 1998-02-20 2000-06-21 Biedermann Motech Gmbh Intervertebral implant
US5928284A (en) 1998-07-09 1999-07-27 Mehdizadeh; Hamid M. Disc replacement prosthesis
DE29813139U1 (en) 1998-07-23 1998-12-03 Howmedica Gmbh Vertebral reconstruction system
FR2782632B1 (en) * 1998-08-28 2000-12-29 Materiel Orthopedique En Abreg Expandable interbody fusion cage
US6117174A (en) 1998-09-16 2000-09-12 Nolan; Wesley A. Spinal implant device
US6090143A (en) 1998-09-21 2000-07-18 Meriwether; Michael W. Box cage for intervertebral body fusion
US6193757B1 (en) 1998-10-29 2001-02-27 Sdgi Holdings, Inc. Expandable intervertebral spacers
US6102950A (en) 1999-01-19 2000-08-15 Vaccaro; Alex Intervertebral body fusion device
US6113638A (en) 1999-02-26 2000-09-05 Williams; Lytton A. Method and apparatus for intervertebral implant anchorage
US6214050B1 (en) 1999-05-11 2001-04-10 Donald R. Huene Expandable implant for inter-bone stabilization and adapted to extrude osteogenic material, and a method of stabilizing bones while extruding osteogenic material
US6419705B1 (en) * 1999-06-23 2002-07-16 Sulzer Spine-Tech Inc. Expandable fusion device and method
US6443989B1 (en) * 2000-12-04 2002-09-03 Roger P. Jackson Posterior expandable fusion cage

Cited By (131)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110238184A1 (en) * 1995-03-27 2011-09-29 Thomas Zdeblick Methods and instruments for interbody fusion
US7431735B2 (en) * 1998-08-28 2008-10-07 Sofamor S.N.C. Expandable interbody fusion cage
US20040249466A1 (en) * 1998-08-28 2004-12-09 Mingyan Liu Expandable interbody fusion cage
US8986389B2 (en) 2003-02-03 2015-03-24 Warsaw, Orthopedic, Inc. Expanding interbody implant and articulating inserter and method
US7828849B2 (en) 2003-02-03 2010-11-09 Warsaw Orthopedic, Inc. Expanding interbody implant and articulating inserter and method
US9750617B2 (en) 2003-02-03 2017-09-05 Warsaw Orthopedic, Inc. Expanding interbody implant and articulating inserter and method
US9271846B2 (en) 2003-02-03 2016-03-01 Warsaw Orthopedic, Inc. Expanding interbody implant and articulating inserter and method
US8579981B2 (en) 2003-02-03 2013-11-12 Warsaw Orthopedic, Inc. Expanding interbody implant and articulating inserter and method
US8257440B2 (en) * 2003-08-05 2012-09-04 Gordon Charles R Method of insertion of an expandable intervertebral implant
US9579124B2 (en) 2003-08-05 2017-02-28 Flexuspine, Inc. Expandable articulating intervertebral implant with limited articulation
US20060247635A1 (en) * 2003-08-05 2006-11-02 Gordon Charles R Dynamic posterior stabilization systems and methods of use
US8172903B2 (en) 2003-08-05 2012-05-08 Gordon Charles R Expandable intervertebral implant with spacer
US8147550B2 (en) 2003-08-05 2012-04-03 Flexuspine, Inc. Expandable articulating intervertebral implant with limited articulation
US8603168B2 (en) 2003-08-05 2013-12-10 Flexuspine, Inc. Artificial functional spinal unit system and method for use
US8123810B2 (en) 2003-08-05 2012-02-28 Gordon Charles R Expandable intervertebral implant with wedged expansion member
US8118871B2 (en) 2003-08-05 2012-02-21 Flexuspine, Inc. Expandable articulating intervertebral implant
US20050283244A1 (en) * 2003-08-05 2005-12-22 Gordon Charles R Method of insertion of an expandable intervertebral implant
US8647386B2 (en) 2003-08-05 2014-02-11 Charles R. Gordon Expandable intervertebral implant system and method
US8052723B2 (en) 2003-08-05 2011-11-08 Flexuspine Inc. Dynamic posterior stabilization systems and methods of use
US8118870B2 (en) 2003-08-05 2012-02-21 Flexuspine, Inc. Expandable articulating intervertebral implant with spacer
US8753398B2 (en) 2003-08-05 2014-06-17 Charles R. Gordon Method of inserting an expandable intervertebral implant without overdistraction
US20050113916A1 (en) * 2003-11-21 2005-05-26 Branch Charles L.Jr. Expandable spinal implant
US20070191951A1 (en) * 2003-11-21 2007-08-16 Branch Charles L Jr Expandable spinal implant
US8221502B2 (en) 2003-11-21 2012-07-17 Wasaw Orthopedic, Inc. Expandable spinal implant
US7217293B2 (en) * 2003-11-21 2007-05-15 Warsaw Orthopedic, Inc. Expandable spinal implant
US7678148B2 (en) 2004-07-23 2010-03-16 Warsaw Orthopedic, Inc. Expandable spinal implant having interlocking geometry for structural support
US20060030943A1 (en) * 2004-07-23 2006-02-09 Marc Peterman Expandable spinal implant having interlocking geometry for structural support
US20100121453A1 (en) * 2004-07-23 2010-05-13 Marc Peterman Expandable spinal implant having interlocking geometry for structural support
US8303658B2 (en) 2004-07-23 2012-11-06 Warsaw Orthopedic, Inc. Expandable spinal implant having interlocking geometry for structural support
EP1658830A1 (en) * 2004-10-05 2006-05-24 Li Kung-Chia Distractable body augmeter capable of being planted through a pedicle for vertebral body reconstruction
US20100057208A1 (en) * 2005-01-20 2010-03-04 Dryer Randall F Expandable spinal fusion cage and associated instrumentation
US20100286780A1 (en) * 2005-01-20 2010-11-11 Dryer Randall F Expandable spinal fusion cage and associated instrumentation
US8403990B2 (en) 2005-01-20 2013-03-26 Warsaw Orthopedic, Inc. Expandable spinal fusion cage and associated instrumentation
US7887595B1 (en) * 2005-12-05 2011-02-15 Nuvasive, Inc. Methods and apparatus for spinal fusion
US8118869B2 (en) 2006-03-08 2012-02-21 Flexuspine, Inc. Dynamic interbody device
US8377098B2 (en) 2007-01-19 2013-02-19 Flexuspine, Inc. Artificial functional spinal unit system and method for use
US8597358B2 (en) 2007-01-19 2013-12-03 Flexuspine, Inc. Dynamic interbody devices
US9066811B2 (en) 2007-01-19 2015-06-30 Flexuspine, Inc. Artificial functional spinal unit system and method for use
US8940022B2 (en) 2007-01-19 2015-01-27 Flexuspine, Inc. Artificial functional spinal unit system and method for use
US20100064045A1 (en) * 2007-05-10 2010-03-11 Teliasonera Ab Handing a request relating to a service
US9034040B2 (en) 2007-08-31 2015-05-19 Globus Medical Inc. Devices and methods for treating bone
US8182514B2 (en) 2007-10-22 2012-05-22 Flexuspine, Inc. Dampener system for a posterior stabilization system with a fixed length elongated member
US8162994B2 (en) 2007-10-22 2012-04-24 Flexuspine, Inc. Posterior stabilization system with isolated, dual dampener systems
US8157844B2 (en) 2007-10-22 2012-04-17 Flexuspine, Inc. Dampener system for a posterior stabilization system with a variable length elongated member
US8523912B2 (en) 2007-10-22 2013-09-03 Flexuspine, Inc. Posterior stabilization systems with shared, dual dampener systems
US8187330B2 (en) 2007-10-22 2012-05-29 Flexuspine, Inc. Dampener system for a posterior stabilization system with a variable length elongated member
US8267965B2 (en) 2007-10-22 2012-09-18 Flexuspine, Inc. Spinal stabilization systems with dynamic interbody devices
US8998992B2 (en) 2008-08-29 2015-04-07 Globus Medical, Inc. Devices and methods for treating bone
US9445856B2 (en) 2008-08-29 2016-09-20 Globus Medical, Inc. Devices and methods for treating bone
US9452063B2 (en) 2009-10-15 2016-09-27 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US20110093074A1 (en) * 2009-10-15 2011-04-21 Chad Glerum Expandable Fusion Device and Method of Installation Thereof
US8062375B2 (en) 2009-10-15 2011-11-22 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9226836B2 (en) 2009-10-15 2016-01-05 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9358128B2 (en) 2009-10-15 2016-06-07 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9510954B2 (en) 2009-10-15 2016-12-06 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9358126B2 (en) 2009-10-15 2016-06-07 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9155628B2 (en) 2009-10-15 2015-10-13 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8709086B2 (en) 2009-10-15 2014-04-29 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9119730B2 (en) 2009-10-15 2015-09-01 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9216095B2 (en) 2009-10-15 2015-12-22 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US20150100128A1 (en) * 2009-10-15 2015-04-09 Globus Medical, Inc. Expandable Fusion Device and Method of Installation Thereof
US9204974B2 (en) 2009-10-15 2015-12-08 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9492287B2 (en) 2009-10-15 2016-11-15 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8556979B2 (en) 2009-10-15 2013-10-15 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9039771B2 (en) 2009-10-15 2015-05-26 Globus Medical, Inc Expandable fusion device and method of installation thereof
US8518120B2 (en) 2009-10-15 2013-08-27 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9211196B2 (en) 2009-10-15 2015-12-15 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9492283B2 (en) 2010-01-12 2016-11-15 Globus Medical, Inc. Expandable spacer and method of use thereof
US9649203B2 (en) 2010-03-16 2017-05-16 Pinnacle Spine Group, Llc Methods of post-filling an intervertebral implant
US9788973B2 (en) 2010-03-16 2017-10-17 Pinnacle Spine Group, Llc Spinal implant
US9216096B2 (en) 2010-03-16 2015-12-22 Pinnacle Spine Group, Llc Intervertebral implants and related tools
US9597200B2 (en) 2010-06-25 2017-03-21 Globus Medical, Inc Expandable fusion device and method of installation thereof
US8685098B2 (en) 2010-06-25 2014-04-01 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8679183B2 (en) 2010-06-25 2014-03-25 Globus Medical Expandable fusion device and method of installation thereof
US8920507B2 (en) 2010-07-15 2014-12-30 Spine Wave, Inc. Plastically deformable inter-osseous device
US9101488B2 (en) 2010-07-15 2015-08-11 Spine Wave, Inc. Apparatus for use in spinal surgery
US8641769B2 (en) 2010-07-15 2014-02-04 Spine Wave, Inc. Plastically deformable inter-osseous device
US9398961B2 (en) 2010-07-15 2016-07-26 Spine Wave, Inc. Plastically deformable inter-osseous device
US9370434B2 (en) 2010-09-03 2016-06-21 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9125757B2 (en) 2010-09-03 2015-09-08 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9855151B2 (en) 2010-09-03 2018-01-02 Globus Medical, Inc Expandable fusion device and method of installation thereof
US8845731B2 (en) 2010-09-03 2014-09-30 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8852279B2 (en) 2010-09-03 2014-10-07 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9351848B2 (en) 2010-09-03 2016-05-31 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9358129B2 (en) 2010-09-03 2016-06-07 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9561116B2 (en) 2010-09-03 2017-02-07 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8845734B2 (en) 2010-09-03 2014-09-30 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9474625B2 (en) 2010-09-03 2016-10-25 Globus Medical, Inc Expandable fusion device and method of installation thereof
US9566168B2 (en) 2010-09-03 2017-02-14 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8876866B2 (en) 2010-12-13 2014-11-04 Globus Medical, Inc. Spinous process fusion devices and methods thereof
US8940051B2 (en) 2011-03-25 2015-01-27 Flexuspine, Inc. Interbody device insertion systems and methods
US9314350B1 (en) 2011-09-23 2016-04-19 Samy Abdou Spinal fixation devices and methods of use
US8845728B1 (en) 2011-09-23 2014-09-30 Samy Abdou Spinal fixation devices and methods of use
US9867714B1 (en) 2011-09-23 2018-01-16 Samy Abdou Spinal fixation devices and methods of use
US9610176B1 (en) 2011-09-23 2017-04-04 Samy Abdou Spinal fixation devices and methods of use
US9539108B2 (en) 2011-09-30 2017-01-10 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US8864833B2 (en) 2011-09-30 2014-10-21 Globus Medical, Inc. Expandable fusion device and method of installation thereof
US9380932B1 (en) 2011-11-02 2016-07-05 Pinnacle Spine Group, Llc Retractor devices for minimally invasive access to the spine
US9526627B2 (en) 2011-11-17 2016-12-27 Exactech, Inc. Expandable interbody device system and method
US9486254B2 (en) 2012-05-08 2016-11-08 Globus Medical, Inc. Device and method for implanting a spinous process fixation device
US8771277B2 (en) 2012-05-08 2014-07-08 Globus Medical, Inc Device and a method for implanting a spinous process fixation device
US9486251B2 (en) 2012-12-31 2016-11-08 Globus Medical, Inc. Spinous process fixation system and methods thereof
US9011493B2 (en) 2012-12-31 2015-04-21 Globus Medical, Inc. Spinous process fixation system and methods thereof
US9402738B2 (en) 2013-02-14 2016-08-02 Globus Medical, Inc. Devices and methods for correcting vertebral misalignment
US9585765B2 (en) 2013-02-14 2017-03-07 Globus Medical, Inc Devices and methods for correcting vertebral misalignment
US9782265B2 (en) 2013-02-15 2017-10-10 Globus Medical, Inc Articulating and expandable vertebral implant
US9492288B2 (en) 2013-02-20 2016-11-15 Flexuspine, Inc. Expandable fusion device for positioning between adjacent vertebral bodies
US9554918B2 (en) 2013-03-01 2017-01-31 Globus Medical, Inc. Articulating expandable intervertebral implant
US9198772B2 (en) 2013-03-01 2015-12-01 Globus Medical, Inc. Articulating expandable intervertebral implant
US9770343B2 (en) 2013-03-01 2017-09-26 Globus Medical Inc. Articulating expandable intervertebral implant
US9204972B2 (en) 2013-03-01 2015-12-08 Globus Medical, Inc. Articulating expandable intervertebral implant
US9198697B2 (en) 2013-03-13 2015-12-01 Globus Medical, Inc. Spinous process fixation system and methods thereof
US9034045B2 (en) 2013-03-15 2015-05-19 Globus Medical, Inc Expandable intervertebral implant
US9186258B2 (en) 2013-03-15 2015-11-17 Globus Medical, Inc. Expandable intervertebral implant
US9486325B2 (en) 2013-03-15 2016-11-08 Globus Medical, Inc. Expandable intervertebral implant
US9480579B2 (en) 2013-03-15 2016-11-01 Globus Medical, Inc. Expandable intervertebral implant
US9149367B2 (en) 2013-03-15 2015-10-06 Globus Medical Inc Expandable intervertebral implant
US9707092B2 (en) 2013-03-15 2017-07-18 Globus Medical, Inc. Expandable intervertebral implant
US9833336B2 (en) 2013-03-15 2017-12-05 Globus Medical, Inc. Expandable intervertebral implant
US9456906B2 (en) 2013-03-15 2016-10-04 Globus Medical, Inc. Expandable intervertebral implant
US9233009B2 (en) 2013-03-15 2016-01-12 Globus Medical, Inc. Expandable intervertebral implant
US9788971B1 (en) 2013-05-22 2017-10-17 Nuvasive, Inc. Expandable fusion implant and related methods
US9801734B1 (en) 2013-08-09 2017-10-31 Nuvasive, Inc. Lordotic expandable interbody implant
US9662224B2 (en) 2014-02-07 2017-05-30 Globus Medical, Inc. Variable lordosis spacer and related methods of use
US9839528B2 (en) 2014-02-07 2017-12-12 Globus Medical, Inc. Variable lordosis spacer and related methods of use
US9402739B2 (en) 2014-02-07 2016-08-02 Globus Medical, Inc. Variable lordosis spacer and related methods of use
US9517144B2 (en) 2014-04-24 2016-12-13 Exactech, Inc. Limited profile intervertebral implant with incorporated fastening mechanism
US9622878B2 (en) * 2014-11-12 2017-04-18 Robert Thomas Grotz Universally expanding cage
US9861494B2 (en) * 2014-11-12 2018-01-09 Iorthopedics, Inc. Universally expanding cage
US9872778B2 (en) 2014-11-12 2018-01-23 Iorthopedics, Inc. Universally expanding cage
US9848996B2 (en) 2015-06-17 2017-12-26 Globus Medical, Inc. Variable lordotic interbody spacer

Also Published As

Publication number Publication date Type
US20040249466A1 (en) 2004-12-09 application
DE69921485T2 (en) 2005-10-27 grant
JP4204200B2 (en) 2009-01-07 grant
JP2002523179A (en) 2002-07-30 application
US6436140B1 (en) 2002-08-20 grant
FR2782632A1 (en) 2000-03-03 application
ES2230879T3 (en) 2005-05-01 grant
DE69921485D1 (en) 2004-12-02 grant
EP1107711A1 (en) 2001-06-20 application
US7431735B2 (en) 2008-10-07 grant
EP1107711B1 (en) 2004-10-27 grant
WO2000012033A1 (en) 2000-03-09 application
FR2782632B1 (en) 2000-12-29 grant

Similar Documents

Publication Publication Date Title
US6558423B1 (en) Interbody spinal fusion implants with multi-lock for locking opposed screws
US7137997B2 (en) Spinal fusion implant
US6648885B1 (en) Device for the osteosynthesis of a spinal segment
US6179873B1 (en) Intervertebral implant, process for widening and instruments for implanting an intervertebral implant
US6033405A (en) Apparatus and method for implant insertion
US6923810B1 (en) Frusto-conical interbody spinal fusion implants
US6663638B2 (en) Femoral ring loader
US8187334B2 (en) System and methods for spinal fusion
US6083225A (en) Method and instrumentation for implant insertion
US7125425B2 (en) Systems and techniques for restoring and maintaining intervertebral anatomy
US5989289A (en) Bone grafts
US6066174A (en) Implant insertion device
US6129763A (en) Expandable osteosynthesis cage
US7749270B2 (en) Expandable intervertebral implant and associated instrumentation
US6610089B1 (en) Spinal implant and cutting tool preparation accessory for mounting the implant
US20090143859A1 (en) Maximum support tlif implant
US5693100A (en) Middle expandable intervertebral disk implant
US5059193A (en) Expandable spinal implant and surgical method
US5653761A (en) Method of lumbar intervertebral disk stabilization
US20060276899A1 (en) Minimally invasive apparatus to manipulate and revitalize spinal column disc
US6830589B2 (en) Expandable fusion device and method
US6033438A (en) Open intervertebral spacer
US6719760B2 (en) Devices and methods for implanting fusion cages
US7479160B2 (en) Interbody fusion grafts and instrumentation
US20010020186A1 (en) Keyed intervertebral dowel