USRE42545E1 - Polyaxial pedicle screw having a threaded and tapered compression locking mechanism - Google Patents

Polyaxial pedicle screw having a threaded and tapered compression locking mechanism Download PDF

Info

Publication number
USRE42545E1
USRE42545E1 US11256914 US25691405A USRE42545E1 US RE42545 E1 USRE42545 E1 US RE42545E1 US 11256914 US11256914 US 11256914 US 25691405 A US25691405 A US 25691405A US RE42545 E1 USRE42545 E1 US RE42545E1
Authority
US
Grant status
Grant
Patent type
Prior art keywords
portion
screw
socket
rod
coupling
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.)
Expired - Lifetime
Application number
US11256914
Inventor
James D. Ralph
Thomas J. Errico
Joseph P. Errico
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Warsaw Orthopedic Inc
Original Assignee
Warsaw Orthopedic Inc
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
Grant date
Family has litigation

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7035Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/7037Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
    • 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
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • 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
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • 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
    • A61F2002/30205Three-dimensional shapes conical
    • A61F2002/3021Three-dimensional shapes conical frustoconical
    • 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
    • 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
    • A61F2002/30331Connections 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
    • A61F2002/30378Spherically-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
    • A61F2002/30476Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30495Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking ring
    • A61F2002/30497Split ring, e.g. circlip
    • 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
    • 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
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • A61F2002/3401Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • 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
    • A61F2230/0063Three-dimensional shapes
    • A61F2230/0067Three-dimensional shapes conical
    • 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
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00017Iron- or Fe-based alloys, e.g. stainless steel
    • 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
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00023Titanium or titanium-based alloys, e.g. Ti-Ni alloys

Abstract

A polyaxial orthopedic device for use with rod implant apparatus includes a screw having a curvate head, a two-piece interlocking coupling element which mounts about the curvate head, and a rod receiving cylindrical body member having a tapered socket into which both the screw and the interlocking coupling element are securely nested. The interlocking coupling element includes a socket portion which is slotted and tapered so that when it is radially compressed by being driven downwardly into the tapered socket in the cylindrical body it crush locks to the screw. The securing of the rod in the body member provides the necessary downward force onto the socket portion through a contact force on the top of the cap portion. Prior to the rod being inserted, therefore, the screw head remains polyaxially free with respect to the coupling element and the body. In a preferred embodiment, the cap portion and the socket portion are formed and coupled in such a way that when the cap portion is compressed toward the socket portion, there is an additional inward radial force applied by the cap portion to the socket portion, thereby enhancing the total locking force onto the head of the screw.

Description

CROSS-REFERENCE TO PRIOR APPLICATION

This application is a continuation of U.S. patent application Ser. No. 09/992,612, filed on Nov. 13, 2001, which is a continuation of U.S. patent application Ser. No. 09/774,915, filed on Jan. 30, 2001, now U.S. Pat. RE 37,665, which is a reissue of U.S. Pat. No. 5,882,350 issued from U.S. patent application Ser. No. 09/002,535 filed on Jan. 2, 1998, which is a continuation-in-part of U.S. patent application Ser. No. 08/843,972 filed on Apr. 17, 1997, now U.S. Pat. No. 5,888,204, which is a continuation-in-part of U.S. patent application Ser. No. 08/632,560 filed on Apr. 15, 1996, now U.S. Pat. No. 5,725,588, which is a continuation-in-part of U.S. patent application Ser. No. 08/421,087 filed Apr. 13, 1995, now U.S. Pat. No. 5,520,690. U.S. patent application Ser. No. 09/002,535 filed on Jan. 2, 1998, now U.S. Pat. No. 5,882,350 is also a continuation of U.S. patent application Ser. No. 08/835,909 filed Apr. 10, 1997, now abandoned, which is a continuation-in-part of prior application U.S. Ser. No. 08/663,383, entitled “A Polyaxial Pedicle Screw”, filed Jun. 13, 1996, now U.S. Pat. No. 5,669,911 which is a continuation-in-part of U.S. patent application Ser. No. 08/559,196 filed Nov. 13, 1995, now abandoned, and which, in turn, was a continuation-in-part of Ser. No. 08/421,087, filed Apr. 13, 1995, now issued U.S. Pat. No. 5,520,690, entitled “An Anterior Spinal Polyaxial Locking Screw Plate Assembly”. The disclosure of each of these prior applications is hereby incorporated by reference in their entirety.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates generally to a polyaxial screw and coupling apparatus for use with orthopedic fixation systems. More particularly, the present invention relates to a screw for insertion into spinal bone, and a coupling element polyaxially mounted thereto, via a two-piece interlocking coupling element having a socket portion and a threaded compression member, for coupling the screw to an orthopedic implantation structure, such as a rod, therein enhancing the efficacy of the implant assembly by providing freedom of angulation among the rod, screw and coupling element.

2. Description of the Prior Art

The bones and connective tissue of an adult human spinal column consists of more than 20 discrete bones coupled sequentially to one another by a tri-joint complex which consist of an anterior disc and the two posterior facet joints, the anterior discs of adjacent bones being cushioned by cartilage spacers referred to as intervertebral discs. These more than 20 bones are anatomically categorized as being members of one of four classifications: cervical, thoracic, lumbar, or sacral. The cervical portion of the spine, which comprises the top of the spine, up to the base of the skull, includes the first 7 vertebrae. The intermediate 12 bones are the thoracic vertebrae, and connect to the lower spine comprising the 5 lumbar vertebrae. The base of the spine is the sacral bones (including the coccyx). The component bones of the cervical spine are generally smaller than those of the thoracic and lumbar spine. For the purposes of this disclosure, however, the word spine shall refer only to the cervical region.

Referring now to FIGS. 1, 2, and 3, top, side, and posterior views of a vertebral body, a pair of adjacent vertebral bodies, and a sequence of vertebral bodies are shown, respectively. The spinal cord is housed in the central canal 10, protected from the posterior side by a shell of bone called the lamina 12. The lamina 12 includes a rearwardly and downwardly extending portion called the spinous process 16, and laterally extending structures which are referred to as the transverse processes 14. The anterior portion of the spine comprises a set of generally cylindrically shaped bones which are stacked one on top of the other. These portions of the vertebrae are referred to as the vertebral bodies 20, and are each separated from the other by the intervertebral discs 22. The pedicles 24 comprise bone bridges which couple the anterior vertebral body 20 to the corresponding lamina 12.

The spinal column of bones is highly complex in that it includes over twenty bones coupled to one another, housing and protecting critical elements of the nervous system having innumerable peripheral nerves and circulatory bodies in close proximity. In spite of these complexities, the spine is a highly flexible structure, capable of a high degree of curvature and twist in nearly every direction. Genetic or developmental irregularities, trauma, chronic stress, tumors, and disease, however, can result in spinal pathologies which either limit this range of motion, or which threaten the critical elements of the nervous system housed within the spinal column. A variety of systems have been disclosed in the art which achieve this immobilization by implanting artificial assemblies in or on the spinal column. These assemblies may be classified as anterior, posterior, or lateral implants. As the classifications suggest, lateral and anterior assemblies are coupled to the anterior portion of the spine, which is the sequence of vertebral bodies. Posterior implants generally comprise pairs of rods, which are aligned along the axis which the bones are to be disposed, and which are then attached to the spinal column by either hooks which couple to the lamina or attach to the transverse processes, or by screws which are inserted through the pedicles.

“Rod assemblies” generally comprise a plurality of such screws which are implanted through the posterior lateral surfaces of the laminae, through the pedicles, and into their respective vertebral bodies. The screws are provided with upper portions which comprise coupling elements, for receiving and securing an elongate rod therethrough. The rod extends along the axis of the spine, coupling to the plurality of screws via their coupling elements. The rigidity of the rod may be utilized to align the spine in conformance with a more desired shape.

It has been identified, however, that a considerable difficulty is associated with inserting screws along a misaligned curvature and simultaneously exactly positioning the coupling elements such that the rod receiving portions thereof are aligned so that the rod can be passed therethrough without distorting the screws. Attempts at achieving proper alignment with fixed screws is understood to require increased operating time, which is known to enhance many complications associated with surgery. Often surgical efforts with such fixed axes devices cannot be achieved, thereby rendering such instrumentation attempts entirely unsucessful.

The art contains a variety of attempts at providing instrumentation which permit a limited freedom with respect to angulation of the screw and the coupling element. These teachings, however, are generally complex, inadequately reliable, and lack long-term durability. These considerable drawbacks associated with prior art systems also include difficulty properly positioned the rod and coupling elements, and the tedious manipulation of the many small parts in the operative environment.

It is, therefore, the principal object of the present invention to provide a pedicle screw and coupling element assembly which provides a polyaxial freedom of implantation angulation with respect to rod reception.

In addition, it is an object of the present invention to provide such an assembly which comprises a reduced number of elements, and which correspondingly provides for expeditious implantation.

Accordingly it is also an object of the present invention to provide an assembly which is reliable, durable, and provides long term fixation support.

Other objects of the present invention not explicitly stated will be set forth and will be more clearly understood in conjunction with the descriptions of the preferred embodiments disclosed hereafter.

SUMMARY OF THE INVENTION

The preceding objects of the invention are achieved by the present invention which is a polyaxial locking screw and coupling element for use with rod stabilization and immobilization systems in the spine. More particularly, the polyaxial screw and coupling element assembly of the present invention comprises a bone screw having a head which is curvate in shape, for example semi-spherical, and a two-piece interlocking coupling element mounted thereto. This combination is mounted inside the bottom of an internal channel of a cylindrical body member.

More specifically, with respect to the cylindrical body member, the tubular body comprises a rod receiving channel formed in the upper portion thereof, with a threading formed on the remaining upper elements so that a rod securing nut and/or set screw may be threaded thereon once a rod has been placed in the channel. The body further includes an axial bore which includes extends from the rod receiving channel through to the bottom of the cylinder. The portion of the axial bore which is below the channel forms a receiving chamber, the upper portion thereof having a constant diameter, and the lower portion of the chamber being inwardly tapered. The inner surface of the upper portion of the chamber and/or the inner surface of the portion of the axial bore which is above the chamber may further include a threading.

The two-piece interlocking coupling element comprises and socket portion and a cap portion. The socket portion is designed with an interior semi-spherical volume, so that it may receive the semi-spherical head of a corresponding bone screw. The interior volume of the socket portion is open at both axial ends thereof. The exterior surface of the socket portion, at the bottom thereof, includes a first set of slots which extend upwardly from the opening so that the interior semi-spherical volume may be expanded or contracted by the application of a radial force. In addition, the exterior surface at the bottom is tapered so that it is narrower at the bottom than at a midpoint. This taper is designed to mate with and nest in the tapered lower portion of the socket portion of the axial bore of the body member.

The upper exterior surface of the socket portion comprises a second set of slots, directed axially along the element to the midpoint, such that the upper opening of the socket element may expand and contract in accordance with the application of a radial force thereon. The exterior surface of this upper section of the socket portion is not tapered and is narrower than the widest taper position of the bottom of the socket portion. The upper section, however, does further include an outwardly extending annular lip at the uppermost axial position. This upper section is designed to be inserted into, and joined with, the cap portion of the coupling element.

The cap portion has a generally cylindrical shape, having an open bottom. The open bottom is inwardly tapered, forming an inwardly extending annular lip, so that as the upper end of the socket portion is inserted, its upper slots are narrowed. Once axially inserted beyond this taper, the upper section of the socket portion expands outward over the inwardly extending annular lip. The inwardly extending annular lip engages the outwardly extending lip of the socket portion so as to prevent disengagement of the two pieces. The socket portion is then permitted to slide into the cap portion, until the larger diameter of the tapered lower portion of the socket contacts the entrance of the cap portion.

The exterior surface of the cap portion may be threaded, so that it may engage a threading of the upper portion of the socket portion and/or the inner surface of the axial bore which is above the socket portion. In addition, the top of the cap includes an opening so that a screw driving tool may directly engage the top of the screw.

The assembly of the entire device begins with the joining of the socket portion to the cap portion of the two-piece interlocking coupling element. This is achieved by the slideable interlocking mating of the two elements. Next, the semi-spherical head of the screw is inserted into the socket portion through the lower expandable opening in the taper portion. Once these parts have been assembled the screw and coupling element should be polyaxially rotateable relative to one another. The screw and coupling element are then inserted through the axial bore of the body (which may require the threading the cap portion of the coupling element along the threading on the inner surface of the axial bore and/or the threading of the cap along the threading of the upper portion of the chamber) until the socket portion nests in the tapered lower portion of the axial bore. If the upper portion of the chamber includes a threading it should not extend beyond the point of the initial nesting of the coupling element in the chamber. This is important because the cap portion must be able to move relative to the socket portion.

In this initial position, the top of the cap portion should rest above the bottom of the rod receiving channel so that a rod, when placed therein, seats directly onto the top of the cap. This direct contact provides the downward force necessary to compress the coupling element into the chamber so that the socket portion is compressed in the tapered portion and locks to the head of the screw.

In a preferred variation of this embodiment, the interior surface of the cap portion includes a slight narrowing taper so that as the cap is compressed downward by the rod, the upper slots of the socket portion are also narrowed, further increasing the crush locking effect on the head of the screw.

The implantation of this screw by a surgeon may proceed first by the assembly of the screw into its initial state. The shaft of the screw is then driven into the vertebral bone at the desired angulation. A rod is then introduced into the rod receiving channel, and the body is angulated into the most ideal position for receiving the rod. A nut and/or set screw is then used to secure the rod in the channel, and simultaneously to provide a sufficient downward translational force to cause the socket portion to be driven into the tapered portion of the chamber in the axial bore, and further to cause the cap portion to drive downwardly also (this further compression locking the screw head in the embodiment wherein the sliding of the cap portion toward the socket portion provides an additional compression on the top of the socket portion and therefore onto the head of the screw).

In a preferred variation, the locking nut comprises a cap nut which has a central post which is designed to provide additional structural support to the inner walls of the element at the top thereof, as well as providing a central seating pressure point for locking the rod in the channel. In either variation, the locking nut seats against the rod and prevents it from moving translationally, axially and rotationally.

Multiple screw assemblies are generally necessary to complete the full array of anchoring sites for the rod immobilization system, however, the screw assembly of the present invention is designed to be compatible with alternative rod systems so that, where necessary, the present invention may be employed to rectify the failures of other systems when the surgery may have already begun.

BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a top view of a human vertebra, which is representative of the type for which the present invention is useful for coupling thereto a rod apparatus;

FIG. 2 is a side view of a pair of adjacent vertebrae of the type shown in FIG. 1;

FIG. 3 is a posterior view of a sequence of vertebrae of the type shown in FIGS. 1 and 2;

FIG. 4 is a side view of a screw having a curvate head which is an aspect of the present invention;

FIG. 5 is a side view of a two-piece interlocking coupling element of present invention;

FIG. 6 is a side view of a two-piece interlocling coupling element of present invention mounted around the head of a screw of the type shown in FIG. 4;

FIG. 7 is a side cross-sectional view of a cylindrical body having a chamber for receiving the two-piece interlocking coupling element and the screw of the present invention;

FIG. 8 is a side cross-sectional view of a top locking nut which is an aspect of the present invention;

FIG. 9 is a side cross-sectional view of an embodiment of the present invention in its fully assembled disposition having a rod securely locked therein; and

FIG. 10 is a side view of an alternative embodiment of the present invention in its fully assembled disposition having a rod securely locked therein.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

While the present invention will be described more fully hereinafter with reference to the accompanying drawings, in which particular embodiments and methods of implantation are shown, it is to be understood at the outset that persons skilled in the art may modify the invention herein described while achieving the functions and results of this invention. Accordingly, the descriptions which follow are to be understood as illustrative and exemplary of specific structures, aspects and features within the broad scope of the present invention and not as limiting of such broad scope.

Referring now to FIG. 4, a side view of the screw portion of the present invention, comprising a curvate head, is shown. The screw 120 comprises a head portion 122, a neck 124, and a shaft 126. In FIG. 4, the shaft 126 is shown as having a tapered shape with a high pitch thread 128. It shall be understood that a variety of shaft designs are interchangeable with the present design. The specific choice of shaft features, such as thread pitch, shaft diameter to thread diameter ratio, and overall shaft shape, should be made be the physician with respect to the conditions of the individual patient's bone, however, this invention is compatible with a wide variety of shaft designs.

The head portion 122 of the screw 120 comprises a semi-spherical shape, which has a recess 130 in it. It is understood that the semi-spherical shape is a section of a sphere, in the embodiment shown the section is greater in extent than a hemisphere, and it correspondingly exhibits an external contour which is equidistant from a center point of the head. In a preferred embodiment, the major cross-section of the semi-spherical head 122 (as shown in the two dimensional illustration of FIG. 4) includes at least 270 degrees of a circle.

The recess 130 defines a receiving locus for the application of a torque for driving the screw 120 into the bone. The specific shape of the recess 122 may be chosen to cooperate with any suitable screw-driving tool. For example, the recess 130 may comprise a slot for a screwdriver, a hexagonally shaped hole for receiving an alien wrench, or most preferably, a threading for a correspondingly threaded post. It is further preferable that the recess 130 be co-axial with the general elongate axis of the screw 120, and most particularly with respect to the shaft 126. Having the axes of the recess 130 and the shaft 126 co-linear facilitates step of inserting the screw 120 into the bone.

The semi-spherical head portion 122 is connected to the shaft 126 at a neck portion 124. While it is preferable that the diameter of the shaft 126 be less than the diameter of the semi-spherical head 122, it is also preferable that the neck 124 of the screw 120 be narrower than the widest portion of the shaft 126. This preferable dimension permits the screw to swing through a variety of angles while still being securely joined to the locking collar (as set forth more fully with respect to FIGS. 5, 8-9).

Referring now to FIG. 5, the two elements which form the two-piece interlocking coupling element of the present invention are shown in a side cross-section view. Phantom lines show the interior structure of the elements along the diametrical cross section. With specific reference to the socket portion 132, the coupling element comprises a roughly cylindrical shape having an interior volume 134 in which the semi-spherical head 122 of the screw 120 is disposed. The interior volume 134 is open at the top 136 of the socket portion 132 and at the bottom thereof 138. The lower section 131 of the socket portion 132 comprises a set of slots 133 which extend vertically from the bottom 138 of the socket portion 132 to a position above the maximum diameter of the semi-spherical interior volume 134. These slots 133 permit the interior volume to expand and contract in accordance with the application of a radial force thereon. The external surface 135 of the lower section 131 of the socket portion 132 is tapered such that the narrowest part of the lower section 131 is at the bottom 138.

The upper section 139 of the socket portion 132 has a generally constant diameter, which is less than the diameter at the uppermost position 137 of the taper of the lower section 131. A second set of vertical slots 141 are provided in this upper section 139 so that it may also expand and contract in accordance with radial forces applied thereto. In addition, the uppermost end of this upper section 139 comprises an outwardly extending annular lip 140.

The cap portion 142 of the coupling element comprises an opening 143 in the bottom thereof, having an inwardly tapered entrance surface conformation 144. As the upper section 139 of the socket portion 132 is inserted into the opening 143 in the cap portion 142, the taper 144 of the opening 143 provides an inwardly directed force which causes the upper section 139 to contract (causes the slots 141 to narrow). This tapered entrance 144 opens to form an annular lip 145 which is useful for engaging and retaining the annular lip 140 of the upper section 139 of the socket portion 132. The interior surface 146 of the cap portion has a constant diameter, therein permitting the inserted upper section 139 of the socket portion 132 to slide and rotate relative to the cap portion 142.

The exterior surface of the cap portion 142 comprises a threading 147 which is designed to engage threadings 211 disposed in the axial bore of the rod receiving body member (see FIG. 7). In addition, the cap portion 142 comprises an axial hole 148 through which a surgeon may insert a screw driving tool to access the head of the screw which is positioned in the interior volume 134 of the socket portion 132.

More particularly, with respect to the disposition of the head 122 of the screw 120 in the socket portion 132, and with reference to FIG. 6, a partially assembled screw 120 and coupling element is shown in a side cross-section view. The top 136 of the socket portion 132 is inserted into the opening in the cap portion 142 until the annular lip 140 of the socket 132 seats into the cap 142. The screw 120 is loosely held within the socket 132, which is, in turn, loosely retained within the cap 142.

Referring now to FIG. 7, the rod receiving body member 200 of the present invention is shown in a side view, wherein critical features of the interior of the element are shown in phantom. The body member 200, which comprises a generally cylindrical tubular body having an axial bore 201 extending therethrough, may be conceptually separated into a chamber portion 202 at the bottom of the axial bore 201, and an upper rod receiving channel portion 204, each of which shall be described more fully hereinbelow.

The upper rod receiving channel portion 204 of the body 200 includes a channel 206 formed therein, having rounded bottom surfaces 207. The channel 206, in turn, divides the walls of the cylindrical body of the upper portion 204 into a pair of upwardly extending members 214a, 214b. As shown in the embodiment illustrated in FIG. 7, the vertical distance from the top 208 of the channel to the curvate bottom 207 thereof, is larger than the diameter of the rod which is to be provided therein. This distance is necessarily larger than the diameter of the rod (see FIGS. 9 and 10) so that the rod may be fully nested in the channel 206. In addition, the depth of the bottom curvate surface 207 of the channel is such that the cap portion 142 of the two-piece interlocking coupling element initially seats above the curvate bottom 207 of the body 200.

The upwardly extending members 214a, 214b further have, disposed thereon, a threading 216 (which may be provided on the inner and/or outer circumferential surfaces, but which is shown in FIGS. 7, 9 and 10 as being on the inner circumferential surface). This threading 216 is ideally suited for receiving a top locking nut (see FIG. 8).

Referring now to the lower portion of the body, the chamber portion 202 can further be subdivided into a lower chamber portion 203 which includes an inwardly tapered surface, and an upper chamber portion 205 which has a constant diameter. The inwardly tapered portion 203 defines a nesting volume into which the socket portion 132 may nest. Prior to its being fully driven into this nesting volume, the socket portion 132 and the screw 120 disposed therein may be angulated relative to one another, and the screw 120 may be angulated relative to the body 200. Once driven fully into the tapered lower chamber portion 203, however, the taper of the axial bore 201 provides the necessary inwardly directed radial force to cause the socket portion 132 to crush lock to the head 122 of the screw 120.

The force which causes the socket portion 132 to be driven downwardly into the tapered lower chamber portion 203 is provided by the cap portion 142. More specifically, as stated above, when the initially assembled screw 120 and coupling element combination 132 and 142 (see FIG. 6) is advanced into the bottom of the axial bore 201 of the body 200, and the socket portion 132 nests in the lower chamber portion 203, the top of the cap portion 142 is positioned to receive the rod (see FIGS. 9 and 10) directly thereon. The locking of the rod in the channel 206 of the body 200 causes the cap portion 142 to be forced downwardly onto the socket portion 132, which in turn drives the socket portion 132 into the tapered lower chamber portion 203 and causes it of compression lock to the head 122 of the screw 120.

Referring now to FIG. 8, a top locking nut 185 is shown in side cross-section view. The nut 185 comprises post portion 186 and a flange portion 187, each of which is rotafionally free, relative to the other. The post portion 186 includes a threading 188 thereon, for engaging and advancing along a threading 216 on the inner surface of the upwardly extending members 214a, 214b of the upper portion 204 of the body 200. The bottom surface 189 of the flange portion 187 (which does not rotate relative to the body as the post portion 186 is rotationally advanced) is intended to seat against the top surface of the rod 250.

Referring now to FIG. 9, in which the fully assembled and body member 200, screw 120, coupling element portions 132 and 142, rod 250 and locking nut 185 are shown in side cross-section views, the implantation of this embodiment is described. First, the screw 120 and the two portions 132 and 142 of the coupling element are assembled into their initial association (see FIG. 6). The combination of the screw 120 and the two coupling element portions 132 and 142 are then advanced down the axial bore 201 of the body 200 until the socket portion 132 nests in the lower chamber 203 and the top of the cap portion 142 seats above the bottom 207 of the channel 206. (This insertion of the subassembly of the screw 120 and coupling element portions 132 and 142 into the axial bore 201 of the body 200 may require the threaded advance of the cap portion 142 along the interior threads 216 of the body.)

The shaft of the screw 120 is then inserted and driven downward into the vertebral bone at the desired angle. Once properly positioned, the body 200 is rotated into the ideal rod receiving position. The rod 250 is then inserted into the channel 206 and the top locling nut 185 is threaded onto the threading 216 and compresses the rod 250 to securely lock it in the channel 206. This downward force of the nut 185 and the rod 250 onto the cap portion 142 causes the cap portion to translate downward thus causing the socket portion 132 to translate downward in the tapered chamber 203 and contract to crush against the head 122 of the screw 120. The assembly is thereby fully locked in position.

Referring to FIG. 10, a variation of the above device is shown in a similar cross-section view. In this embodiment, the inner surface 146′ of the cap portion 142 is tapered inwardly in the vertical direction so that the downward translation of the cap portion 142 causes the annular lip 140 of the socket portion 132 to be compressed inwardly. This causes the slots 141 of the upper section 139 of the socket portion 132 to narrow. This may be utilized to further clamp the interior volume 134 against the head 122 of the screw 120.

While there has been described and illustrated embodiments of a polyaxial screw and coupling element assembly for use with posterior spinal rod implantation apparatus, it will be apparent to those skilled in the art that variations and modifications are possible without deviating from the broad spirit and principle of the present invention. The present invention shall, therefore, be limited solely by the scope of the claims appended hereto.

Claims (31)

1. A polyaxial screw and coupling element assembly for use with orthopedic rod implantation apparatus, comprising:
a screw having a semi-spherical head;
a cylindrical body including an axial bore defining a bottom chamber portion at a bottom end thereof and a rod receiving channel at a top end thereof, said bottom chamber portion further defining a tapered lower portion and a constant diameter upper chamber portion, and said top end having a threading thereon;
a two-piece interlocking coupling element including
a socket portion having a semi-spherical interior volume for receiving therein the head of said screw, upper and lower sections, and vertical slots formed in said upper and lower sections, at least one of said slots rendering said interior volume expandable and contractable, said lower section having a tapered exterior surface for nesting in said tapered lower chamber portion of said cylindrical body such that forceable advancement of socket portion along the tapered lower chamber portion of the axial bore causes the at least one of said slots to narrow such that the semi-spherical interior volume contract, and
a cap portion having an opening in a bottom thereof and an interior chamber extending upwardly therefrom for joining with, and slideably retaining therein, the upper section of said socket portion, said cap portion initially seating with a portion thereof extending into a bottom portion of said rod receiving channel; and
a top locking nut, mateable with said threading, for locking a rod in said channel and for applying therethrough a downward force onto said cap portion,
wherein said semi-spherical head portion is rotationally freely mounted within the semi-spherical interior volume of the socket portion prior to said socket portion being forceably advanced into the tapered lower chamber portion of the axial bore, and
whereby downward compression of a rod in said channel portion of said body member, by said top locking nut, onto the cap portion causes the forceable advancement of the socket portion into the tapered lower chamber portion of the axial bore, and locks the screw, coupling element and body relative to one another.
2. The polyaxial screw as set forth in claim 1, wherein said semi-spherical head of said screw further includes a recess formed therein for receiving therein a screwdriving tool such that said screw may be threadably advanced into a vertebral bone.
3. The polyaxial screw as set forth in claim 1, wherein said threading on said top end is on the interior surface of said channel.
4. The polyaxial screw as set forth in claim 3, wherein said cap portion further includes a threading and wherein said cap portion needs to be threadably advanced along the threading to be seated in the bore into its initial position.
5. The assembly as set forth in claim 1,
wherein said socket portion further comprises a substantially constant diameter upper section having an outwardly annular extending lip at an extreme end thereof,
wherein said opening in the bottom of the cap portion comprises an inwardly directed annular lip, and
wherein at least one of said vertical slots in the upper section of said socket portion renders the upper section thereof to be expandable and contractable such that the upper section of the socket portion may be forceably inserted into the opening in the bottom of the cap portion so that it may be retained in the interior chamber therein by mutual interference engagement of the inwardly directed annular lip of the cap portion and the outwardly extending annular lip of the socket portion.
6. The assembly as set forth in claim 5, wherein the interior chamber of the cap portion comprises a tapered surface such that advancement thereof into the hole causes an inwardly directed force against the upper section of the socket portion, therein causing the at least one of said vertical slots in the upper section to narrow and causes the upper section to contract and further lock the head of the screw within the interior semi-spherical volume of the socket portion.
7. An orthopaedic implant apparatus having a rod and a plurality of screw and coupling element assemblies, comprising:
at least one screw having a semi-spherical head;
at least one cylindrical body including an axial bore defining a bottom chamber portion at a bottom end thereof and a rod receiving channel at a top end thereof, said bottom chamber portion further defining a tapered lower portion and a constant diameter upper chamber portion, and said top end having a threading thereon;
at least one corresponding two-piece interlocking coupling element including
a socket portion having a semi-spherical interior volume for receiving therein the head of said corresponding screw, upper and lower sections, and vertical slots formed in said upper and lower sections, at least one of said slots rendering said interior volume expandable and contractable, said lower section having a tapered exterior surface for nesting in said corresponding tapered lower chamber portion of said cylindrical body such that forceable advancement of socket portion along the tapered lower chamber portion of the axial bore causes the at least one of said slots to narrow such that the semi-spherical interior volume contract, and
a cap portion having an opening in a bottom thereof and an interior chamber extending upwardly therefrom for joining with, and slideably retaining therein, the upper section of said socket portion, said cap portion initially seating with a portion thereof extending into a bottom portion of said rod receiving channel; and
at least one corresponding top locking nut, mateable with said threading, for locking a rod in said channel and for applying therethrough a downward force onto said cap portion,
wherein said semi-spherical head portion is rotationally freely mounted within the semi-spherical interior volume of the socket portion prior to said socket portion being forceably advanced into the tapered lower chamber portion of the axial bore, and
whereby downward compression of a rod in said channel portion of said body member, by said top locking nut, onto the cap portion causes the forceable advancement of the socket portion into the tapered lower chamber portion of the axial bore, and locks the screw, coupling element and body relative to one another.
8. The apparatus as set forth in claim 7, wherein said threading on said top end is on the interior surface of said channel.
9. The apparatus as set forth in claim 8, wherein said cap portion further includes a threading and wherein said cap portion needs to be threadably advanced along the threading to be seated in the bore into its initial position.
10. The apparatus as set forth in claim 7,
wherein said socket portion further comprises a substantially constant diameter upper section having an outwardly annular extending lip at an extreme end thereof,
wherein said opening in the bottom of the cap portion comprises an inwardly directed annular lip, and
wherein at least one of said vertical slots in the upper section of said socket portion renders the upper section thereof to be expandable and contractable such that the upper section of the socket portion may be forceably inserted into the opening in the bottom of the cap portion so that it may be retained in the interior chamber therein by mutual interference engagement of the inwardly directed annular lip of the cap portion and the outwardly extending annular lip of the socket portion.
11. The apparatus as set forth in claim 10, wherein the interior chamber of the cap portion comprises atapered surface such that advancement thereof into the hole causes an inwardly directed force against the upper section of the socket portion, therein causing the at least one of said vertical slots in the upper section to narrow and causes the upper section to contract and further lock the head of the screw within the interior semi-spherical volume of the socket portion.
12. An orthopedic device for securing immobilizing structures to sequences of bones, comprising:
a screw having a semi-spherical head and a threaded shaft;
a coupling element having an axial hole extending therethrough, a portion of the axial hole defining an interior volume for receiving therein the semi-spherical head of the screw such that the threaded shaft may be moved through a variety of angles relative to the axial hole, the coupling element further including at least one slot rendering at least the interior volume deformable, the coupling element further including a tapered exterior surface;
a receiving member including a through hole having an interior wall surface, a portion of the interior wall surface of the through hole being shaped to receive the coupling element and the screw when the semi-spherical head of the screw is mounted within the coupling element; and
wherein advancement of the screw through the through hole relative to the receiving member when the exterior surface of the coupling element engages the interior wall surface of the through hole prevents the coupling element from further advancement through the hole, preventing the semi-spherical head of the screw from advancing further through the through hole, and causing locking of the screw relative to both the coupling element and to the receiving member thereby locking the angle of the screw relative to the axial hole.
13. The assembly as set forth in claim 12, wherein the semi-spherical head of the screw further includes a recess formed therein for receiving therein a screwdriving tool such that the screw may be advanced into a vertebral bone.
14. An orthopedic implant apparatus comprising:
a fixation element having a semi-spherical head and a shaft extending therefrom;
a receiving member including an axial bore defined by an interior surface wall, a portion of the axial bore having a tapered portion;
a socket portion having a semi-spherical interior volume for receiving therein the semi-spherical head, and an exterior surface capable of nesting against the interior surface wall of the tapered portion, the socket portion being located in the axial bore of the receiving member;
wherein the semi-spherical head is rotationally freely mounted within the semi-spherical interior volume of the socket portion prior to the socket portion being forcibly advanced against the interior surface wall of the tapered portion, and whereby advancement of the socket portion causes the fixation element, the socket portion and the receiving member to be locked relative to one another.
15. The assembly as set forth in claim 14, wherein the semi-spherical head of the fixation element further includes a recess formed therein for receiving therein a screwdriving tool such that the fixation element may be advanced into a vertebral bone.
16. A pedicle screw and rod coupling member assembly wherein said rod coupling member and screw are capable of being selectively positioned and locked at a plurality of angles relative to one another, said assembly comprising:
a bone screw having a curvate head;
a locking collar disposed around said curvate head and having a slot; and
a rod coupling member having a bore therethrough for receiving said curvate head and locking collar, said bore having an interior surface and a pair of upwardly extending members forming a rod-receiving U-shaped channel, said upwardly extending members having threads thereon for receiving a locking device,
wherein said pedicle screw and rod coupling member assembly assume a first position such that said rod coupling member and screw are capable of assuming a variety of angles relative to each other and a second position with a rod member disposed in said rod-receiving U-shaped channel and said locking device tightened on said threads such that said locking collar engages said rod coupling member interior surface to lock the angle of the screw relative to the rod coupling member.
17. The orthopedic device as set forth in claim 16, wherein the curvate head of the screw further includes a recess formed therein for receiving therein a screwdriving tool such that the screw may be advanced into a vertebral bone.
18. The orthopedic device as set forth in claim 16, wherein the rod coupling member interior surface includes a lower portion that is inwardly tapered, and which engages said locking collar to crush lock the locking collar to the curvate head of the screw.
19. The orthopedic device as set forth in claim 16, wherein the rod coupling member interior surface includes a lower portion that is inwardly tapered, and the exterior surface of the locking collar is tapered to engage said inwardly tapered surface.
20. An orthopedic implant and bone anchoring member assembly wherein said bone anchoring member is selectively positionable and lockable at any one of a plurality of angles relative to said implant, said assembly comprising:
a bone anchoring member having a curvate head and a threaded shaft;
a rod coupling member having a bore extending therethrough for receiving said curvate head in a lower portion thereof, said bore having an interior surface;
a rod positioned in an upper portion of said bore; and
a locking ring positioned in the lower portion of the bore between said curvate head and said interior surface,
wherein axial translation of said rod relative to said bore urges said curvate head into locking engagement with said locking ring to lock the angle of the screw relative to rod coupling element.
21. The assembly of claim 20, wherein said curvate head is semi-spherical.
22. The assembly of claim 20, wherein said bore includes at least two portions having different diameters.
23. The assembly of claim 22, wherein said locking ring is positioned at least partially within one of said portions having different diameters.
24. The assembly as set forth in claim 20, wherein said locking ring circumferentially retains the curvate head.
25. The assembly as set forth in claim 20, further comprising a locking device for engaging said rod to urge said rod to translate axially relative to said bore.
26. The assembly as set forth in claim 25, wherein said locking device comprises a nut engageable with threads on said orthopedic implant.
27. The assembly of claim 20, wherein the bore includes a tapered portion and the locking ring contacts against the interior surface of the tapered portion.
28. An orthopedic device for securing structures to bone, comprising:
a screw having a curvate head and a threaded shaft;
a coupling element having an axial hole extending therethrough, a portion of the axial hole defining an interior volume for receiving therein the curvate head of the screw such that the threaded shaft may be moved through a variety of angles to the axial hole, the coupling element further including at least one slot rendering at least the interior volume deformable, the coupling element further including a tapered exterior surface;
a receiving member including a through hole having an interior wall surface, a portion of the interior wall surface of the through hole being shaped to receive the coupling element and the screw when the curvate head of the screw is mounted within the coupling element; and
wherein advancement of the screw through the through hole relative to the receiving member when the exterior surface of the coupling element engages the interior wall surface of the through hole prevents the coupling element from further advancement through the hole, and causing locking of the screw relative to both the coupling element and to the receiving member thereby locking the angle of the screw relative to the axial hole.
29. The assembly as set forth in claim 28, wherein the curvate head of the screw further includes a recess formed therein for receiving therein a screwdriving tool such that the screw may be advanced into a vertebral bone.
30. An orthopedic implant apparatus comprising: a fixation element having a curvate head and a shaft extending therefrom;
a receiving member including an axial bore defined by an interior surface wall, a portion of the axial bore having a tapered portion;
a socket portion having a curved interior volume for receiving therein the curvate head, and an exterior surface capable of nesting against the interior surface wall of the tapered portion, the socket portion being located in the axial bore of the receiving member, the socket portion including a slot with the interior volume being deformable when the socket portion moves along the tapered portion;
wherein the curvate head is rotationally freely mounted within the curved interior volume of the socket portion prior to the socket portion being forcibly advanced against the interior surface wall of the tapered portion, and whereby advancement of the socket portion causes the fixation element, the socket portion and the receiving member to be locked relative to one another.
31. The assembly as set forth in claim 30, wherein the curvate head of the fixation element further includes a recess formed therein for receiving therein a screwdriving tool such that the fixation element may be advanced into a vertebral bone.
US11256914 1995-04-13 2005-10-24 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism Expired - Lifetime USRE42545E1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US08421087 US5520690A (en) 1995-04-13 1995-04-13 Anterior spinal polyaxial locking screw plate assembly
US55919695 true 1995-11-13 1995-11-13
US08632560 US5725588A (en) 1995-04-13 1996-04-15 Acetabular cup having polyaxial locking screws
US08663383 US5669911A (en) 1995-04-13 1996-06-13 Polyaxial pedicle screw
US83590997 true 1997-04-10 1997-04-10
US08843972 US5888204A (en) 1996-04-15 1997-04-17 Acetabular cup having capped polyaxial locking screws
US09002535 US5882350A (en) 1995-04-13 1998-01-02 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism
US09774915 USRE37665E1 (en) 1995-04-13 2001-01-30 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism
US09992612 USRE39089E1 (en) 1995-04-13 2001-11-13 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism
US11256914 USRE42545E1 (en) 1995-04-13 2005-10-24 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11256914 USRE42545E1 (en) 1995-04-13 2005-10-24 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US09002535 Reissue US5882350A (en) 1995-04-13 1998-01-02 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

Publications (1)

Publication Number Publication Date
USRE42545E1 true USRE42545E1 (en) 2011-07-12

Family

ID=27357187

Family Applications (4)

Application Number Title Priority Date Filing Date
US09002535 Expired - Lifetime US5882350A (en) 1995-04-13 1998-01-02 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism
US09774915 Expired - Lifetime USRE37665E1 (en) 1995-04-13 2001-01-30 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism
US09992612 Expired - Lifetime USRE39089E1 (en) 1995-04-13 2001-11-13 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism
US11256914 Expired - Lifetime USRE42545E1 (en) 1995-04-13 2005-10-24 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

Family Applications Before (3)

Application Number Title Priority Date Filing Date
US09002535 Expired - Lifetime US5882350A (en) 1995-04-13 1998-01-02 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism
US09774915 Expired - Lifetime USRE37665E1 (en) 1995-04-13 2001-01-30 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism
US09992612 Expired - Lifetime USRE39089E1 (en) 1995-04-13 2001-11-13 Polyaxial pedicle screw having a threaded and tapered compression locking mechanism

Country Status (1)

Country Link
US (4) US5882350A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8444681B2 (en) 2009-06-15 2013-05-21 Roger P. Jackson Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert
US20140135839A1 (en) * 2012-11-09 2014-05-15 Blackstone Medical, Inc. Percutaneous modular head-to-head cross connector
US20140172023A1 (en) * 2006-04-12 2014-06-19 Alphatec Spine, Inc. Pedicle screw assembly
US8911479B2 (en) 2012-01-10 2014-12-16 Roger P. Jackson Multi-start closures for open implants
US8992579B1 (en) 2011-03-08 2015-03-31 Nuvasive, Inc. Lateral fixation constructs and related methods
US8992575B1 (en) 2012-06-22 2015-03-31 Seaspine, Inc. Spinal implants having offsets and hooks
US9060815B1 (en) 2012-03-08 2015-06-23 Nuvasive, Inc. Systems and methods for performing spine surgery
US9168069B2 (en) 2009-06-15 2015-10-27 Roger P. Jackson Polyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer
US9393047B2 (en) 2009-06-15 2016-07-19 Roger P. Jackson Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock
US9451992B2 (en) * 2010-12-01 2016-09-27 Facet-Link Inc. Variable angle bone screw fixation arrangement
US9480517B2 (en) 2009-06-15 2016-11-01 Roger P. Jackson Polyaxial bone anchor with pop-on shank, shank, friction fit retainer, winged insert and low profile edge lock
US9510880B2 (en) 2013-08-13 2016-12-06 Zimmer, Inc. Polyaxial locking mechanism
US9517089B1 (en) 2013-10-08 2016-12-13 Nuvasive, Inc. Bone anchor with offset rod connector
US9603634B1 (en) 2015-11-13 2017-03-28 Amendia, Inc. Percutaneous rod-to-rod cross connector
US9980753B2 (en) 2011-12-29 2018-05-29 Roger P Jackson pivotal anchor with snap-in-place insert having rotation blocking extensions

Families Citing this family (373)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778089B1 (en) * 1998-04-30 2000-07-21 Dimso Sa Spinal osteosynthesis system with flange and lock
US6113601A (en) * 1998-06-12 2000-09-05 Bones Consulting, Llc Polyaxial pedicle screw having a loosely coupled locking cap
US6565565B1 (en) 1998-06-17 2003-05-20 Howmedica Osteonics Corp. Device for securing spinal rods
US6187000B1 (en) 1998-08-20 2001-02-13 Endius Incorporated Cannula for receiving surgical instruments
US6254602B1 (en) * 1999-05-28 2001-07-03 Sdgi Holdings, Inc. Advanced coupling device using shape-memory technology
US6261291B1 (en) * 1999-07-08 2001-07-17 David J. Talaber Orthopedic implant assembly
FR2796545B1 (en) * 1999-07-22 2002-03-15 Dimso Sa poly-axial connection for osteosynthesis system, in particular for the spine
US6280442B1 (en) * 1999-09-01 2001-08-28 Sdgi Holdings, Inc. Multi-axial bone screw assembly
CA2423973A1 (en) * 1999-09-27 2001-04-05 Blackstone Medical, Inc. A surgical screw system and related methods
US6554834B1 (en) * 1999-10-07 2003-04-29 Stryker Spine Slotted head pedicle screw assembly
DE19950252C2 (en) * 1999-10-18 2002-01-17 Schaefer Micomed Gmbh bone plate
DE10005385A1 (en) * 2000-02-07 2001-08-09 Ulrich Gmbh & Co Kg pedicle screw
US6440137B1 (en) * 2000-04-18 2002-08-27 Andres A. Horvath Medical fastener cap system
US6610067B2 (en) * 2000-05-01 2003-08-26 Arthrosurface, Incorporated System and method for joint resurface repair
US7678151B2 (en) 2000-05-01 2010-03-16 Ek Steven W System and method for joint resurface repair
US7618462B2 (en) 2000-05-01 2009-11-17 Arthrosurface Incorporated System and method for joint resurface repair
US8388624B2 (en) 2003-02-24 2013-03-05 Arthrosurface Incorporated Trochlear resurfacing system and method
US6520964B2 (en) * 2000-05-01 2003-02-18 Std Manufacturing, Inc. System and method for joint resurface repair
US8177841B2 (en) 2000-05-01 2012-05-15 Arthrosurface Inc. System and method for joint resurface repair
US20040230315A1 (en) * 2000-05-01 2004-11-18 Ek Steven W. Articular surface implant
US7713305B2 (en) 2000-05-01 2010-05-11 Arthrosurface, Inc. Articular surface implant
EP1174092A3 (en) * 2000-07-22 2003-03-26 Corin Spinal Systems Limited A pedicle attachment assembly
US7985247B2 (en) * 2000-08-01 2011-07-26 Zimmer Spine, Inc. Methods and apparatuses for treating the spine through an access device
US7056321B2 (en) 2000-08-01 2006-06-06 Endius, Incorporated Method of securing vertebrae
DE10055888C1 (en) * 2000-11-10 2002-04-25 Biedermann Motech Gmbh Bone screw, has connector rod receiving part with unsymmetrically arranged end bores
US8377100B2 (en) * 2000-12-08 2013-02-19 Roger P. Jackson Closure for open-headed medical implant
DE10064571C2 (en) * 2000-12-22 2003-07-10 Juergen Harms fixing
US6488681B2 (en) 2001-01-05 2002-12-03 Stryker Spine S.A. Pedicle screw assembly
US6451021B1 (en) * 2001-02-15 2002-09-17 Third Millennium Engineering, Llc Polyaxial pedicle screw having a rotating locking element
US20060064092A1 (en) * 2001-05-17 2006-03-23 Howland Robert S Selective axis serrated rod low profile spinal fixation system
US6770075B2 (en) 2001-05-17 2004-08-03 Robert S. Howland Spinal fixation apparatus with enhanced axial support and methods for use
US20040243128A1 (en) * 2001-05-17 2004-12-02 Howland Robert S. Selective axis posterior lumbar spinal plating fixation apparatus and methods for use
US7314467B2 (en) * 2002-04-24 2008-01-01 Medical Device Advisory Development Group, Llc. Multi selective axis spinal fixation system
CN1255082C (en) * 2001-08-13 2006-05-10 劳伦斯·M·麦金利 Vertebral alignment and fixation assembly
US6520963B1 (en) 2001-08-13 2003-02-18 Mckinley Lawrence M. Vertebral alignment and fixation assembly
US6974460B2 (en) 2001-09-14 2005-12-13 Stryker Spine Biased angulation bone fixation assembly
US6692500B2 (en) * 2001-10-15 2004-02-17 Gary Jack Reed Orthopedic stabilization device and method
US6679883B2 (en) 2001-10-31 2004-01-20 Ortho Development Corporation Cervical plate for stabilizing the human spine
US7766947B2 (en) 2001-10-31 2010-08-03 Ortho Development Corporation Cervical plate for stabilizing the human spine
FR2832308B1 (en) * 2001-11-22 2004-09-24 Guillaume Derouet orthopedic implant is a support structure provided with at least one orifice for the passage of a fastening screw associated with a nut
DE50107716D1 (en) * 2001-12-24 2005-11-17 Synthes Ag Device for osteosynthesis
US6764510B2 (en) * 2002-01-09 2004-07-20 Myocor, Inc. Devices and methods for heart valve treatment
US6641586B2 (en) 2002-02-01 2003-11-04 Depuy Acromed, Inc. Closure system for spinal fixation instrumentation
US7294128B2 (en) * 2002-04-09 2007-11-13 Nas Medical Technologies, Inc. Bone fixation apparatus
US7842073B2 (en) * 2002-04-18 2010-11-30 Aesculap Ii, Inc. Screw and rod fixation assembly and device
US6740086B2 (en) 2002-04-18 2004-05-25 Spinal Innovations, Llc Screw and rod fixation assembly and device
US7799086B2 (en) * 2002-04-25 2010-09-21 Zimmer Technology, Inc. Modular bone implant, tools, and method
DE20207851U1 (en) * 2002-05-21 2002-10-10 Metz Stavenhagen Peter Anchoring element for fastening a rod of a device for adjusting a human or animal spine to a vertebral bone
US7001389B1 (en) 2002-07-05 2006-02-21 Navarro Richard R Fixed and variable locking fixation assembly
US8257402B2 (en) * 2002-09-06 2012-09-04 Jackson Roger P Closure for rod receiving orthopedic implant having left handed thread removal
US8876868B2 (en) * 2002-09-06 2014-11-04 Roger P. Jackson Helical guide and advancement flange with radially loaded lip
US6726689B2 (en) * 2002-09-06 2004-04-27 Roger P. Jackson Helical interlocking mating guide and advancement structure
US20060009773A1 (en) * 2002-09-06 2006-01-12 Jackson Roger P Helical interlocking mating guide and advancement structure
US8926672B2 (en) 2004-11-10 2015-01-06 Roger P. Jackson Splay control closure for open bone anchor
US8282673B2 (en) * 2002-09-06 2012-10-09 Jackson Roger P Anti-splay medical implant closure with multi-surface removal aperture
US7615070B2 (en) * 2002-10-11 2009-11-10 Spineco, Inc. Electro-stimulation and medical delivery device
US20040073221A1 (en) * 2002-10-11 2004-04-15 Spineco, Inc., A Corporation Of Ohio Electro-stimulation and medical delivery device
FR2847152B1 (en) * 2002-11-19 2005-02-18 Eurosurgical An anchoring vertebral and locking device on a polyaxial screw
EP1765201A4 (en) 2004-06-28 2013-01-23 Arthrosurface Inc System for articular surface replacement
US7951163B2 (en) 2003-11-20 2011-05-31 Arthrosurface, Inc. Retrograde excision system and apparatus
US7828853B2 (en) * 2004-11-22 2010-11-09 Arthrosurface, Inc. Articular surface implant and delivery system
US7901408B2 (en) * 2002-12-03 2011-03-08 Arthrosurface, Inc. System and method for retrograde procedure
US7163541B2 (en) * 2002-12-03 2007-01-16 Arthrosurface Incorporated Tibial resurfacing system
EP1845890A4 (en) 2003-11-20 2010-06-09 Arthrosurface Inc System and method for retrograde procedure
US7914561B2 (en) * 2002-12-31 2011-03-29 Depuy Spine, Inc. Resilient bone plate and screw system allowing bi-directional assembly
US7175624B2 (en) 2002-12-31 2007-02-13 Depuy Spine, Inc. Bone plate and screw system allowing bi-directional assembly
US6843791B2 (en) * 2003-01-10 2005-01-18 Depuy Acromed, Inc. Locking cap assembly for spinal fixation instrumentation
US7887539B2 (en) 2003-01-24 2011-02-15 Depuy Spine, Inc. Spinal rod approximators
US7341591B2 (en) * 2003-01-30 2008-03-11 Depuy Spine, Inc. Anterior buttress staple
US7608096B2 (en) 2003-03-10 2009-10-27 Warsaw Orthopedic, Inc. Posterior pedicle screw and plate system and methods
US8540753B2 (en) 2003-04-09 2013-09-24 Roger P. Jackson Polyaxial bone screw with uploaded threaded shank and method of assembly and use
US7615068B2 (en) * 2003-05-02 2009-11-10 Applied Spine Technologies, Inc. Mounting mechanisms for pedicle screws and related assemblies
US20050182400A1 (en) * 2003-05-02 2005-08-18 Jeffrey White Spine stabilization systems, devices and methods
US20050182401A1 (en) * 2003-05-02 2005-08-18 Timm Jens P. Systems and methods for spine stabilization including a dynamic junction
US7377923B2 (en) 2003-05-22 2008-05-27 Alphatec Spine, Inc. Variable angle spinal screw assembly
US6716214B1 (en) * 2003-06-18 2004-04-06 Roger P. Jackson Polyaxial bone screw with spline capture connection
US8814911B2 (en) 2003-06-18 2014-08-26 Roger P. Jackson Polyaxial bone screw with cam connection and lock and release insert
US8366753B2 (en) * 2003-06-18 2013-02-05 Jackson Roger P Polyaxial bone screw assembly with fixed retaining structure
US8377102B2 (en) 2003-06-18 2013-02-19 Roger P. Jackson Polyaxial bone anchor with spline capture connection and lower pressure insert
USRE46431E1 (en) 2003-06-18 2017-06-13 Roger P Jackson Polyaxial bone anchor with helical capture connection, insert and dual locking assembly
US8926670B2 (en) 2003-06-18 2015-01-06 Roger P. Jackson Polyaxial bone screw assembly
US7967850B2 (en) 2003-06-18 2011-06-28 Jackson Roger P Polyaxial bone anchor with helical capture connection, insert and dual locking assembly
US8398682B2 (en) 2003-06-18 2013-03-19 Roger P. Jackson Polyaxial bone screw assembly
US8257398B2 (en) 2003-06-18 2012-09-04 Jackson Roger P Polyaxial bone screw with cam capture
US6945975B2 (en) * 2003-07-07 2005-09-20 Aesculap, Inc. Bone fixation assembly and method of securement
US6945974B2 (en) * 2003-07-07 2005-09-20 Aesculap Inc. Spinal stabilization implant and method of application
WO2005016161A1 (en) * 2003-07-25 2005-02-24 Traiber, S.A. Vertebral fixation device for the treatment of spondylolisthesis
US7316714B2 (en) * 2003-08-05 2008-01-08 Flexuspine, Inc. Artificial functional spinal unit assemblies
US7909869B2 (en) 2003-08-05 2011-03-22 Flexuspine, Inc. Artificial spinal unit assemblies
US7799082B2 (en) 2003-08-05 2010-09-21 Flexuspine, Inc. Artificial functional spinal unit system and method for use
US7204853B2 (en) * 2003-08-05 2007-04-17 Flexuspine, Inc. Artificial functional spinal unit assemblies
US7753958B2 (en) 2003-08-05 2010-07-13 Gordon Charles R Expandable intervertebral implant
US8118869B2 (en) 2006-03-08 2012-02-21 Flexuspine, Inc. Dynamic interbody device
US6981973B2 (en) * 2003-08-11 2006-01-03 Mckinley Laurence M Low profile vertebral alignment and fixation assembly
CA2536336C (en) * 2003-08-20 2012-04-10 Sdgi Holdings, Inc. Multi-axial orthopedic device and system, e.g. for spinal surgery
US7322981B2 (en) * 2003-08-28 2008-01-29 Jackson Roger P Polyaxial bone screw with split retainer ring
US8137386B2 (en) 2003-08-28 2012-03-20 Jackson Roger P Polyaxial bone screw apparatus
CA2538105A1 (en) * 2003-09-08 2005-03-17 Synthes Gmbh Longitudinal support
US8070785B2 (en) 2003-09-16 2011-12-06 Spineco, Inc. Bone anchor prosthesis and system
US7905907B2 (en) 2003-10-21 2011-03-15 Theken Spine, Llc Internal structure stabilization system for spanning three or more structures
US7967826B2 (en) 2003-10-21 2011-06-28 Theken Spine, Llc Connector transfer tool for internal structure stabilization systems
US7588588B2 (en) * 2003-10-21 2009-09-15 Innovative Spinal Technologies System and method for stabilizing of internal structures
US7090674B2 (en) * 2003-11-03 2006-08-15 Spinal, Llc Bone fixation system with low profile fastener
JP2007512108A (en) 2003-11-20 2007-05-17 アースロサーフィス・インコーポレーテッド Degeneracy specific delivery of surface re-forming device
US7179261B2 (en) * 2003-12-16 2007-02-20 Depuy Spine, Inc. Percutaneous access devices and bone anchor assemblies
US7635366B2 (en) * 2003-12-29 2009-12-22 Abdou M Samy Plating system for bone fixation and method of implantation
US20050203515A1 (en) * 2003-12-30 2005-09-15 Thomas Doherty Bone anchor assemblies
EP1699370A4 (en) * 2003-12-30 2008-08-06 Depuy Spine Sarl Bone anchor assemblies and methods of manufacturing bone anchor assemblies
US7678137B2 (en) 2004-01-13 2010-03-16 Life Spine, Inc. Pedicle screw constructs for spine fixation systems
FR2865375B1 (en) * 2004-01-27 2006-12-15 Medicrea International of vertebral osteosynthesis material
US7311712B2 (en) * 2004-02-26 2007-12-25 Aesculap Implant Systems, Inc. Polyaxial locking screw plate assembly
US7862587B2 (en) 2004-02-27 2011-01-04 Jackson Roger P Dynamic stabilization assemblies, tool set and method
US8292926B2 (en) 2005-09-30 2012-10-23 Jackson Roger P Dynamic stabilization connecting member with elastic core and outer sleeve
US9050148B2 (en) 2004-02-27 2015-06-09 Roger P. Jackson Spinal fixation tool attachment structure
US7862594B2 (en) * 2004-02-27 2011-01-04 Custom Spine, Inc. Polyaxial pedicle screw assembly
US8105368B2 (en) 2005-09-30 2012-01-31 Jackson Roger P Dynamic stabilization connecting member with slitted core and outer sleeve
US8353932B2 (en) 2005-09-30 2013-01-15 Jackson Roger P Polyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member
US7819902B2 (en) * 2004-02-27 2010-10-26 Custom Spine, Inc. Medialised rod pedicle screw assembly
CA2701522C (en) 2004-02-27 2012-05-15 Roger P. Jackson Orthopedic implant rod reduction tool set and method
US7163539B2 (en) * 2004-02-27 2007-01-16 Custom Spine, Inc. Biased angle polyaxial pedicle screw assembly
US7892257B2 (en) 2004-02-27 2011-02-22 Custom Spine, Inc. Spring loaded, load sharing polyaxial pedicle screw assembly and method
US8308782B2 (en) 2004-11-23 2012-11-13 Jackson Roger P Bone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation
US7160300B2 (en) 2004-02-27 2007-01-09 Jackson Roger P Orthopedic implant rod reduction tool set and method
US7766915B2 (en) 2004-02-27 2010-08-03 Jackson Roger P Dynamic fixation assemblies with inner core and outer coil-like member
DE102004010380A1 (en) 2004-03-03 2005-09-22 Biedermann Motech Gmbh Anchoring element and the stabilization device for dynamic stabilization of vertebrae or bones with such anchoring element
FR2867375B1 (en) * 2004-03-11 2007-04-06 Medicrea International Bone anchoring element for vertebral osteosynthesis material and process for the manufacture of this anchoring member
JP5580530B2 (en) * 2005-06-07 2014-08-27 グローバス メディカル インコーポレイティッド Polyaxial screw
US7503924B2 (en) * 2004-04-08 2009-03-17 Globus Medical, Inc. Polyaxial screw
US20050228380A1 (en) * 2004-04-09 2005-10-13 Depuy Spine Inc. Instruments and methods for minimally invasive spine surgery
US7618418B2 (en) * 2004-04-16 2009-11-17 Kyphon Sarl Plate system for minimally invasive support of the spine
US7648520B2 (en) * 2004-04-16 2010-01-19 Kyphon Sarl Pedicle screw assembly
US7524323B2 (en) * 2004-04-16 2009-04-28 Kyphon Sarl Subcutaneous support
US7678139B2 (en) * 2004-04-20 2010-03-16 Allez Spine, Llc Pedicle screw assembly
FR2869215B1 (en) * 2004-04-21 2006-10-13 Kotobuki Ika Shoji Company Ltd Device for holding a bar or the like for spinal osteosynthesis
US7935135B2 (en) * 2004-06-09 2011-05-03 Zimmer Spine, Inc. Spinal fixation device
US7559943B2 (en) * 2004-06-09 2009-07-14 Zimmer Spine, Inc. Spinal fixation device with internal drive structure
EP1758511A4 (en) * 2004-06-14 2008-12-03 M S Abdou Occipital fixation system and method of use
US7857834B2 (en) 2004-06-14 2010-12-28 Zimmer Spine, Inc. Spinal implant fixation assembly
CA2573649C (en) * 2004-07-12 2012-04-10 Synthes (U.S.A.) Device for the dynamic fixation of bones
US7766945B2 (en) * 2004-08-10 2010-08-03 Lanx, Inc. Screw and rod fixation system
US7186255B2 (en) * 2004-08-12 2007-03-06 Atlas Spine, Inc. Polyaxial screw
US20060052783A1 (en) * 2004-08-17 2006-03-09 Dant Jack A Polyaxial device for spine stabilization during osteosynthesis
US20060052784A1 (en) * 2004-08-17 2006-03-09 Zimmer Spine, Inc. Polyaxial device for spine stabilization during osteosynthesis
US20060052786A1 (en) * 2004-08-17 2006-03-09 Zimmer Spine, Inc. Polyaxial device for spine stabilization during osteosynthesis
US20060058788A1 (en) * 2004-08-27 2006-03-16 Hammer Michael A Multi-axial connection system
US8951290B2 (en) * 2004-08-27 2015-02-10 Blackstone Medical, Inc. Multi-axial connection system
EP1799134A4 (en) * 2004-09-14 2011-03-09 Spineco Inc Implant device
US7651502B2 (en) 2004-09-24 2010-01-26 Jackson Roger P Spinal fixation tool set and method for rod reduction and fastener insertion
US8366747B2 (en) * 2004-10-20 2013-02-05 Zimmer Spine, Inc. Apparatus for connecting a longitudinal member to a bone portion
US7604655B2 (en) * 2004-10-25 2009-10-20 X-Spine Systems, Inc. Bone fixation system and method for using the same
WO2006047711A3 (en) * 2004-10-25 2006-11-23 Alphaspine Inc Pedicle screw systems and methods
WO2006047707A3 (en) * 2004-10-25 2006-06-22 Alphaspine Inc Pedicle screw systems and methods of assembling/installing the same
EP1811911A4 (en) 2004-11-10 2012-01-11 Roger P Jackson Helical guide and advancement flange with break-off extensions
US7833250B2 (en) 2004-11-10 2010-11-16 Jackson Roger P Polyaxial bone screw with helically wound capture connection
US7572279B2 (en) * 2004-11-10 2009-08-11 Jackson Roger P Polyaxial bone screw with discontinuous helically wound capture connection
US7621918B2 (en) 2004-11-23 2009-11-24 Jackson Roger P Spinal fixation tool set and method
US7875065B2 (en) * 2004-11-23 2011-01-25 Jackson Roger P Polyaxial bone screw with multi-part shank retainer and pressure insert
US8152810B2 (en) 2004-11-23 2012-04-10 Jackson Roger P Spinal fixation tool set and method
US7306606B2 (en) * 2004-12-15 2007-12-11 Orthopaedic Innovations, Inc. Multi-axial bone screw mechanism
US7736380B2 (en) 2004-12-21 2010-06-15 Rhausler, Inc. Cervical plate system
US7811311B2 (en) * 2004-12-30 2010-10-12 Warsaw Orthopedic, Inc. Screw with deployable interlaced dual rods
US7789899B2 (en) * 2004-12-30 2010-09-07 Warsaw Orthopedic, Inc. Bone anchorage screw with built-in hinged plate
US7445627B2 (en) * 2005-01-31 2008-11-04 Alpinespine, Llc Polyaxial pedicle screw assembly
WO2006089292A3 (en) 2005-02-18 2007-12-06 M S Abdou Devices and methods for dynamic fixation of skeletal structure
US7789896B2 (en) 2005-02-22 2010-09-07 Jackson Roger P Polyaxial bone screw assembly
US20130274817A9 (en) 2005-02-22 2013-10-17 Roger P. Jackson Polyaxial bone screw with spherical capture, compression and alignment and retention structures
US7951172B2 (en) * 2005-03-04 2011-05-31 Depuy Spine Sarl Constrained motion bone screw assembly
US7951175B2 (en) 2005-03-04 2011-05-31 Depuy Spine, Inc. Instruments and methods for manipulating a vertebra
EP1861028A2 (en) * 2005-03-07 2007-12-05 Samy M. Abdou Occipital fixation system
US7338491B2 (en) * 2005-03-22 2008-03-04 Spinefrontier Inc Spinal fixation locking mechanism
EP1871302A4 (en) * 2005-03-25 2012-05-02 Blackstone Medical Inc Multi-axial connection system
US7883532B2 (en) * 2005-04-25 2011-02-08 Spineco, Inc. Vertebral pars interarticularis clamp a new spine fixation device, instrumentation, and methodology
US20110178552A1 (en) * 2005-04-25 2011-07-21 Spineco, Inc. Vertebral pars interarticularis clamp a new spine fixation device, instrumentation, and methodology
US7811310B2 (en) * 2005-05-04 2010-10-12 Spinefrontier, Inc Multistage spinal fixation locking mechanism
US7476239B2 (en) * 2005-05-10 2009-01-13 Jackson Roger P Polyaxial bone screw with compound articulation
WO2006127992A8 (en) * 2005-05-25 2008-01-24 Alphaspine Inc Low profile pedicle screw and rod assembly
WO2008137933A1 (en) * 2005-05-25 2008-11-13 Alpinespine Llc Low rider pedicle screw system
US7776067B2 (en) 2005-05-27 2010-08-17 Jackson Roger P Polyaxial bone screw with shank articulation pressure insert and method
CN101252888A (en) * 2005-07-18 2008-08-27 D·M·全;帕特里克·丹尼斯·穆尔 Bi-polar bone screw assembly
US7766946B2 (en) * 2005-07-27 2010-08-03 Frank Emile Bailly Device for securing spinal rods
US7717943B2 (en) 2005-07-29 2010-05-18 X-Spine Systems, Inc. Capless multiaxial screw and spinal fixation assembly and method
CN1907240B (en) * 2005-08-03 2011-03-16 比德曼莫泰赫有限公司 Bone anchoring device
KR100741293B1 (en) * 2005-08-30 2007-07-23 김훈 Spinal Pedicle Screw
US7695497B2 (en) * 2005-09-12 2010-04-13 Seaspine, Inc. Implant system for osteosynthesis
EP1928361B1 (en) * 2005-09-16 2017-10-25 Zimmer GmbH Insert and shell of a joint ball receptacle
US7955358B2 (en) 2005-09-19 2011-06-07 Albert Todd J Bone screw apparatus, system and method
WO2007040553A1 (en) * 2005-09-26 2007-04-12 Dong Jeon Hybrid jointed bone screw system
US8012177B2 (en) 2007-02-12 2011-09-06 Jackson Roger P Dynamic stabilization assembly with frusto-conical connection
US7686835B2 (en) * 2005-10-04 2010-03-30 X-Spine Systems, Inc. Pedicle screw system with provisional locking aspects
US7927359B2 (en) 2005-10-06 2011-04-19 Paradigm Spine, Llc Polyaxial screw
US20080221623A1 (en) * 2005-10-17 2008-09-11 Gooch Hubert L Systems and Methods for the Medical Treatment of Structural Tissue
US20080221624A1 (en) * 2005-10-17 2008-09-11 Gooch Hubert L Systems and Methods for the Medical Treatment of Structural Tissue
US20070118131A1 (en) * 2005-10-17 2007-05-24 Gooch Hubert L Anchor for Augmentation of Screw Purchase and Improvement of Screw Safety in Pedicle Screw Fixation and Bone Fracture Fixation Systems
US8002806B2 (en) * 2005-10-20 2011-08-23 Warsaw Orthopedic, Inc. Bottom loading multi-axial screw assembly
US7722651B2 (en) * 2005-10-21 2010-05-25 Depuy Spine, Inc. Adjustable bone screw assembly
EP1787603A1 (en) * 2005-11-18 2007-05-23 Zimmer GmbH Basis-platform for an artificial joint
US8100946B2 (en) * 2005-11-21 2012-01-24 Synthes Usa, Llc Polyaxial bone anchors with increased angulation
US7704271B2 (en) 2005-12-19 2010-04-27 Abdou M Samy Devices and methods for inter-vertebral orthopedic device placement
US9216041B2 (en) 2009-06-15 2015-12-22 Roger P. Jackson Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts
US9668771B2 (en) 2009-06-15 2017-06-06 Roger P Jackson Soft stabilization assemblies with off-set connector
US8998959B2 (en) 2009-06-15 2015-04-07 Roger P Jackson Polyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert
GB0600662D0 (en) 2006-01-13 2006-02-22 Depuy Int Ltd Spinal support rod kit
US7854768B2 (en) * 2006-01-20 2010-12-21 Zimmer Technology, Inc. Shoulder arthroplasty system
EP1978896B1 (en) * 2006-01-20 2009-07-22 Zimmer GmbH Humeral component
US8348952B2 (en) 2006-01-26 2013-01-08 Depuy International Ltd. System and method for cooling a spinal correction device comprising a shape memory material for corrective spinal surgery
US8057519B2 (en) * 2006-01-27 2011-11-15 Warsaw Orthopedic, Inc. Multi-axial screw assembly
US7722652B2 (en) 2006-01-27 2010-05-25 Warsaw Orthopedic, Inc. Pivoting joints for spinal implants including designed resistance to motion and methods of use
US7833252B2 (en) 2006-01-27 2010-11-16 Warsaw Orthopedic, Inc. Pivoting joints for spinal implants including designed resistance to motion and methods of use
WO2007114834A1 (en) * 2006-04-05 2007-10-11 Dong Myung Jeon Multi-axial, double locking bone screw assembly
WO2007121271A3 (en) * 2006-04-11 2008-03-06 Synthes Usa Minimally invasive fixation system
US7588593B2 (en) * 2006-04-18 2009-09-15 International Spinal Innovations, Llc Pedicle screw with vertical adjustment
US8133262B2 (en) * 2006-04-28 2012-03-13 Depuy Spine, Inc. Large diameter bone anchor assembly
US8361129B2 (en) 2006-04-28 2013-01-29 Depuy Spine, Inc. Large diameter bone anchor assembly
US20080015576A1 (en) * 2006-04-28 2008-01-17 Whipple Dale E Large diameter bone anchor assembly
US20080004626A1 (en) * 2006-05-26 2008-01-03 Glazer Paul A Orthopedic coil screw insert
EP2078506A4 (en) * 2006-06-05 2011-11-09 Traiber S L Device for vertebral attachment and tool for fitting of the said device
DE602007013910D1 (en) * 2006-06-07 2011-05-26 Disc Motion Technologies Inc pedicle screw
US8388660B1 (en) 2006-08-01 2013-03-05 Samy Abdou Devices and methods for superior fixation of orthopedic devices onto the vertebral column
WO2008024373A3 (en) * 2006-08-21 2008-06-19 M Samy Abdou Bone screw systems and methods of use
US7918858B2 (en) 2006-09-26 2011-04-05 Depuy Spine, Inc. Minimally invasive bone anchor extensions
US7674279B2 (en) * 2006-10-13 2010-03-09 Spinal U.S.A. Bone plate
US8167910B2 (en) * 2006-10-16 2012-05-01 Innovative Delta Technology Llc Bone screw and associated assembly and methods of use thereof
US7867258B2 (en) * 2006-10-17 2011-01-11 Warsaw Orthopedic, Inc. Multi-axial bone attachment member
WO2008091266A1 (en) * 2006-12-07 2008-07-31 Dong Myung Jeon Spinal rod transverse connector system
EP2088945A4 (en) 2006-12-08 2010-02-17 Roger P Jackson Tool system for dynamic spinal implants
WO2008073404A3 (en) 2006-12-11 2008-08-21 Arthrosurface Inc Retrograde resection apparatus and method
US20080161853A1 (en) * 2006-12-28 2008-07-03 Depuy Spine, Inc. Spine stabilization system with dynamic screw
US7794478B2 (en) * 2007-01-15 2010-09-14 Innovative Delta Technology, Llc Polyaxial cross connector and methods of use thereof
US9962194B2 (en) 2007-01-15 2018-05-08 Innovative Delta Technology, Llc Polyaxial spinal stabilizer connector and methods of use thereof
US8366745B2 (en) 2007-05-01 2013-02-05 Jackson Roger P Dynamic stabilization assembly having pre-compressed spacers with differential displacements
US8475498B2 (en) 2007-01-18 2013-07-02 Roger P. Jackson Dynamic stabilization connecting member with cord connection
US20080319482A1 (en) * 2007-01-18 2008-12-25 Jackson Roger P Dynamic fixation assemblies with pre-tensioned cord segments
US8092500B2 (en) 2007-05-01 2012-01-10 Jackson Roger P Dynamic stabilization connecting member with floating core, compression spacer and over-mold
US8377098B2 (en) 2007-01-19 2013-02-19 Flexuspine, Inc. Artificial functional spinal unit system and method for use
US8221479B2 (en) 2007-01-19 2012-07-17 Pbj, Llc Orthopedic screw insert
WO2008091112A1 (en) * 2007-01-23 2008-07-31 Bio-Smart Co., Ltd Spacer for use in a surgical operation for spinous process of spine
US7901437B2 (en) 2007-01-26 2011-03-08 Jackson Roger P Dynamic stabilization member with molded connection
WO2008094572A3 (en) * 2007-01-30 2008-10-02 Dong Myung Jeon Anterior cervical plating system
WO2008101097A3 (en) * 2007-02-14 2008-10-16 Arthrosurface Inc Bone cement delivery device
US8926669B2 (en) * 2007-02-27 2015-01-06 The Center For Orthopedic Research And Education, Inc. Modular polyaxial pedicle screw system
US8167912B2 (en) 2007-02-27 2012-05-01 The Center for Orthopedic Research and Education, Inc Modular pedicle screw system
EP2131767B1 (en) * 2007-03-12 2017-11-22 Stout Medical Group, L.P. Expandable attachment device
WO2008119006A1 (en) 2007-03-27 2008-10-02 Alpinespine Llc Pedicle screw system configured to receive a straight or a curved rod
US20080243135A1 (en) * 2007-03-30 2008-10-02 Robinson Randolph C Driver-Fixator System, Method, and Apparatus
WO2008128047A1 (en) * 2007-04-11 2008-10-23 Spinal U.S.A. Recessed plate system
US8197517B1 (en) 2007-05-08 2012-06-12 Theken Spine, Llc Frictional polyaxial screw assembly
US7942911B2 (en) 2007-05-16 2011-05-17 Ortho Innovations, Llc Polyaxial bone screw
US7942910B2 (en) * 2007-05-16 2011-05-17 Ortho Innovations, Llc Polyaxial bone screw
US8197518B2 (en) 2007-05-16 2012-06-12 Ortho Innovations, Llc Thread-thru polyaxial pedicle screw system
US7951173B2 (en) * 2007-05-16 2011-05-31 Ortho Innovations, Llc Pedicle screw implant system
EP2160158A4 (en) 2007-05-31 2013-06-26 Roger P Jackson Dynamic stabilization connecting member with pre-tensioned solid core
JP5085730B2 (en) 2007-06-28 2012-11-28 スピナル エレメンツ,インク. Spine stabilization device
US20090005815A1 (en) * 2007-06-28 2009-01-01 Scott Ely Dynamic stabilization system
US9439681B2 (en) 2007-07-20 2016-09-13 DePuy Synthes Products, Inc. Polyaxial bone fixation element
DE602008004916D1 (en) * 2007-07-20 2011-03-24 Synthes Gmbh Multi-axial bone fixation element
US20100160980A1 (en) * 2007-07-26 2010-06-24 Biotechni America Spine Group, Inc. Spinal fixation assembly
US20090088800A1 (en) * 2007-08-24 2009-04-02 Spinal Elements, Inc. Loop rod spinal stablization device
WO2009029928A1 (en) * 2007-08-31 2009-03-05 University Of South Florida Translational manipulation polyaxial screw head
US20090069852A1 (en) * 2007-09-06 2009-03-12 Warsaw Orthopedic, Inc. Multi-Axial Bone Anchor Assembly
US20090069849A1 (en) * 2007-09-10 2009-03-12 Oh Younghoon Dynamic screw system
US8414588B2 (en) * 2007-10-04 2013-04-09 Depuy Spine, Inc. Methods and devices for minimally invasive spinal connection element delivery
US8162994B2 (en) 2007-10-22 2012-04-24 Flexuspine, Inc. Posterior stabilization system with isolated, 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
US8523912B2 (en) 2007-10-22 2013-09-03 Flexuspine, Inc. Posterior stabilization systems with shared, 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
US8182514B2 (en) 2007-10-22 2012-05-22 Flexuspine, Inc. Dampener system for a posterior stabilization system with a fixed length elongated member
US8267965B2 (en) 2007-10-22 2012-09-18 Flexuspine, Inc. Spinal stabilization systems with dynamic interbody devices
US8911477B2 (en) 2007-10-23 2014-12-16 Roger P. Jackson Dynamic stabilization member with end plate support and cable core extension
WO2009055407A1 (en) * 2007-10-23 2009-04-30 K2M, Inc. Posterior pedicle screw having a taper lock
US20090105756A1 (en) 2007-10-23 2009-04-23 Marc Richelsoph Spinal implant
GB0720762D0 (en) * 2007-10-24 2007-12-05 Depuy Spine Sorl Assembly for orthopaedic surgery
EP2974672A1 (en) * 2007-11-02 2016-01-20 Stout Medical Group, L.P. Expandable attachment device
US7789900B2 (en) 2007-12-04 2010-09-07 Expanding Orthopedics, Inc. Double collet connector assembly for bone anchoring element
US20090171395A1 (en) * 2007-12-28 2009-07-02 Jeon Dong M Dynamic spinal rod system
US20090192548A1 (en) * 2008-01-25 2009-07-30 Jeon Dong M Pedicle-laminar dynamic spinal stabilization device
US20090194206A1 (en) * 2008-01-31 2009-08-06 Jeon Dong M Systems and methods for wrought nickel/titanium alloy flexible spinal rods
US20090198290A1 (en) * 2008-02-06 2009-08-06 Warsaw Orthopedic, Inc. Non-Clamping Fastening Mechanism With Anti-Splay Feature
EP2262448A4 (en) 2008-03-03 2014-03-26 Arthrosurface Inc Bone resurfacing system and method
US8608746B2 (en) * 2008-03-10 2013-12-17 DePuy Synthes Products, LLC Derotation instrument with reduction functionality
US8709015B2 (en) 2008-03-10 2014-04-29 DePuy Synthes Products, LLC Bilateral vertebral body derotation system
US8764754B2 (en) * 2008-03-21 2014-07-01 Life Spine, Inc. Systems and methods for spinal rod insertion and reduction
WO2009117724A3 (en) 2008-03-21 2010-01-07 Life Spine, Inc. Spinal rod guide for a vertebral screw spinal rod connector assembly
US20090254125A1 (en) * 2008-04-03 2009-10-08 Daniel Predick Top Loading Polyaxial Spine Screw Assembly With One Step Lockup
US8123785B2 (en) * 2008-05-08 2012-02-28 Aesculap Implant Systems, Llc Minimally invasive spinal stabilization system
US20090312804A1 (en) * 2008-06-17 2009-12-17 Thomas Gamache Adjustable implant assembly
USD746461S1 (en) 2009-06-19 2015-12-29 Life Spine, Inc. Spinal rod connector
WO2009155523A1 (en) * 2008-06-19 2009-12-23 Life Spine, Inc. Spinal rod connectors configured to retain spinal rods of varying diameters
US8425514B2 (en) * 2008-06-25 2013-04-23 Westmark Medical, Llc. Spinal fixation device
US8157846B2 (en) * 2008-07-24 2012-04-17 Ingenium S.A. Locking mechanism with two-piece washer
EP2355725B1 (en) 2008-09-05 2017-03-08 Synthes GmbH Bone fixation assembly
US9603629B2 (en) 2008-09-09 2017-03-28 Intelligent Implant Systems Llc Polyaxial screw assembly
CA2736616A1 (en) 2008-09-12 2010-03-18 Marcel Mueller Spinal stabilizing and guiding fixation system
US9320546B2 (en) 2008-09-29 2016-04-26 DePuy Synthes Products, Inc. Polyaxial bottom-loading screw and rod assembly
US20100087873A1 (en) * 2008-10-06 2010-04-08 Warsaw Orthopedics, Inc. Surgical Connectors for Attaching an Elongated Member to a Bone
US8506601B2 (en) 2008-10-14 2013-08-13 Pioneer Surgical Technology, Inc. Low profile dual locking fixation system and offset anchor member
US8292934B2 (en) * 2008-10-17 2012-10-23 Warsaw Orthopedic, Inc. Dynamic anchor assembly for connecting elements in spinal surgical procedures
US8080040B2 (en) * 2008-10-29 2011-12-20 Warsaw Orthopedic, Inc. Anchor with two member securing mechanism for attaching an elongated member to a bone
US20100114168A1 (en) * 2008-10-30 2010-05-06 Warsaw Orthopedic, Inc. Anchor with non-threaded securing mechanism to attach an elongated member to a bone
JP2012508038A (en) 2008-11-03 2012-04-05 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 single plane bone fixation assembly
US20090143823A1 (en) * 2008-11-13 2009-06-04 Jeon Dong M Transverse connector system for spinal rods
US7947065B2 (en) 2008-11-14 2011-05-24 Ortho Innovations, Llc Locking polyaxial ball and socket fastener
US8075603B2 (en) 2008-11-14 2011-12-13 Ortho Innovations, Llc Locking polyaxial ball and socket fastener
US20100160978A1 (en) * 2008-12-23 2010-06-24 John Carbone Bone screw assembly with non-uniform material
US20100198262A1 (en) * 2009-01-30 2010-08-05 Mckinley Laurence M Axial offset bone fastener system
US20100198271A1 (en) * 2009-02-02 2010-08-05 Vincent Leone Screw Sheath for Minimally Invasive Spinal Surgery and Method Relating Thereto
US8636778B2 (en) 2009-02-11 2014-01-28 Pioneer Surgical Technology, Inc. Wide angulation coupling members for bone fixation system
US8998961B1 (en) 2009-02-26 2015-04-07 Lanx, Inc. Spinal rod connector and methods
US8241341B2 (en) * 2009-03-20 2012-08-14 Spinal Usa, Inc. Pedicle screws and methods of using the same
EP2419031B1 (en) * 2009-04-15 2016-11-30 Synthes GmbH Revision connector for spinal constructs
WO2010121246A1 (en) 2009-04-17 2010-10-21 Arthrosurface Incorporated Glenoid resurfacing system and method
US9662126B2 (en) 2009-04-17 2017-05-30 Arthrosurface Incorporated Glenoid resurfacing system and method
US9808281B2 (en) * 2009-05-20 2017-11-07 DePuy Synthes Products, Inc. Patient-mounted retraction
CN102458279B (en) 2009-06-17 2014-10-15 斯恩蒂斯有限公司 A connector for correcting spinal structure
US7942909B2 (en) 2009-08-13 2011-05-17 Ortho Innovations, Llc Thread-thru polyaxial pedicle screw system
US9877747B2 (en) 2009-09-02 2018-01-30 Globus Medical, Inc. Spine stabilization system
EP2485654A4 (en) 2009-10-05 2014-07-30 Jackson P Roger Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit
US8361123B2 (en) * 2009-10-16 2013-01-29 Depuy Spine, Inc. Bone anchor assemblies and methods of manufacturing and use thereof
US8449578B2 (en) * 2009-11-09 2013-05-28 Ebi, Llc Multiplanar bone anchor system
US9044272B2 (en) 2009-11-09 2015-06-02 Ebi, Llc Multiplanar bone anchor system
US8986349B1 (en) 2009-11-11 2015-03-24 Nuvasive, Inc. Systems and methods for correcting spinal deformities
US8764806B2 (en) 2009-12-07 2014-07-01 Samy Abdou Devices and methods for minimally invasive spinal stabilization and instrumentation
EP2335625B1 (en) * 2009-12-21 2014-10-22 Biedermann Technologies GmbH & Co. KG Bone anchoring device
US20110196430A1 (en) * 2010-02-10 2011-08-11 Walsh David A Spinal fixation assembly with intermediate element
WO2011127065A1 (en) 2010-04-06 2011-10-13 Seaspine, Inc. System and methods for correcting spinal deformities
US8535318B2 (en) 2010-04-23 2013-09-17 DePuy Synthes Products, LLC Minimally invasive instrument set, devices and related methods
US9084634B1 (en) 2010-07-09 2015-07-21 Theken Spine, Llc Uniplanar screw
US9393049B2 (en) 2010-08-20 2016-07-19 K2M, Inc. Spinal fixation system
WO2012024665A3 (en) 2010-08-20 2012-08-09 K2M, Inc. Spinal fixation system
WO2012030712A1 (en) 2010-08-30 2012-03-08 Zimmer Spine, Inc. Polyaxial pedicle screw
WO2012033532A8 (en) 2010-09-08 2014-03-06 Jackson Roger P Dynamic stabilization members with elastic and inelastic sections
WO2012051576A3 (en) * 2010-10-15 2012-07-19 Phygen, Llc Fixation screw assembly
US9232969B2 (en) * 2010-10-29 2016-01-12 Warsaw Orthopedic, Inc. Directional control for a multi-axial screw assembly
EP2637585A4 (en) 2010-11-10 2017-01-18 Jackson Roger P Polyaxial bone anchors with pop-on shank, friction fit fully restrained retainer, insert and tool receiving features
EP2670321B1 (en) * 2011-02-04 2017-05-10 Spinesave AG Precaution against jamming on open bone screws
US8388687B2 (en) 2011-03-25 2013-03-05 Flexuspine, Inc. Interbody device insertion systems and methods
US9066716B2 (en) 2011-03-30 2015-06-30 Arthrosurface Incorporated Suture coil and suture sheath for tissue repair
US9131962B2 (en) 2011-05-24 2015-09-15 Globus Medical, Inc. Bone screw assembly
CN103717159B (en) 2011-05-27 2016-08-17 新特斯有限责任公司 Including minimally invasive spinal fixation system alignment feature vertebrae
US8845728B1 (en) 2011-09-23 2014-09-30 Samy Abdou Spinal fixation devices and methods of use
US20130085534A1 (en) * 2011-09-30 2013-04-04 Nicolas Hainard Connectors for a secondary bone anchor
US9526627B2 (en) 2011-11-17 2016-12-27 Exactech, Inc. Expandable interbody device system and method
US9427260B2 (en) 2012-03-01 2016-08-30 Globus Medical, Inc. Closed-head polyaxial and monaxial screws
ES2386042B1 (en) * 2012-05-09 2013-06-14 Dentisel, S.L. Dental prosthesis system
ES2563785T3 (en) * 2012-06-01 2016-03-16 Biedermann Technologies Gmbh & Co. Kg Anchoring device polyaxial bone
US8491640B1 (en) 2012-07-02 2013-07-23 James C. Robinson Bone screw coupling assembly
US9510863B2 (en) 2012-07-02 2016-12-06 Spectrum Spine Ip Holdings, Llc Bone screw coupling assembly
EP2682062B1 (en) * 2012-07-03 2015-09-16 Biedermann Technologies GmbH & Co. KG Polyaxial bone anchoring device
US9468448B2 (en) 2012-07-03 2016-10-18 Arthrosurface Incorporated System and method for joint resurfacing and repair
EP2689734B1 (en) * 2012-07-27 2016-09-14 Biedermann Technologies GmbH & Co. KG Polyaxial bone anchoring device with enlarged pivot angle
US9179957B2 (en) 2012-08-09 2015-11-10 Spinecraft, LLC Systems, assemblies and methods for spinal derotation
US9572598B2 (en) 2012-08-09 2017-02-21 Spine Craft, LLC Uniplanar surgical screw assembly
US9320617B2 (en) 2012-10-22 2016-04-26 Cogent Spine, LLC Devices and methods for spinal stabilization and instrumentation
US8911478B2 (en) 2012-11-21 2014-12-16 Roger P. Jackson Splay control closure for open bone anchor
US8852239B2 (en) 2013-02-15 2014-10-07 Roger P Jackson Sagittal angle screw with integral shank and receiver
US8979898B2 (en) 2013-02-20 2015-03-17 K2M, Inc. Iliosacral polyaxial screw
US9492288B2 (en) 2013-02-20 2016-11-15 Flexuspine, Inc. Expandable fusion device for positioning between adjacent vertebral bodies
US9492200B2 (en) 2013-04-16 2016-11-15 Arthrosurface Incorporated Suture system and method
US9453526B2 (en) 2013-04-30 2016-09-27 Degen Medical, Inc. Bottom-loading anchor assembly
US9125694B2 (en) 2013-05-06 2015-09-08 Life Spine, Inc. Systems and methods for spinal rod insertion and reduction
US9044273B2 (en) 2013-10-07 2015-06-02 Intelligent Implant Systems, Llc Polyaxial plate rod system and surgical procedure
US9566092B2 (en) 2013-10-29 2017-02-14 Roger P. Jackson Cervical bone anchor with collet retainer and outer locking sleeve
US9649135B2 (en) 2013-11-27 2017-05-16 Spinal Llc Bottom loading low profile fixation system
US9717533B2 (en) 2013-12-12 2017-08-01 Roger P. Jackson Bone anchor closure pivot-splay control flange form guide and advancement structure
US9451993B2 (en) 2014-01-09 2016-09-27 Roger P. Jackson Bi-radial pop-on cervical bone anchor
US9931219B2 (en) 2014-03-07 2018-04-03 Arthrosurface Incorporated Implant and anchor assembly
US20150282843A1 (en) * 2014-04-02 2015-10-08 FloSpine LLC Polyaxial bone anchor incorporating a threaded bone screw and compression saddle
US9517144B2 (en) 2014-04-24 2016-12-13 Exactech, Inc. Limited profile intervertebral implant with incorporated fastening mechanism
US9597119B2 (en) 2014-06-04 2017-03-21 Roger P. Jackson Polyaxial bone anchor with polymer sleeve
US9649142B2 (en) 2015-03-10 2017-05-16 Spinal Llc Modular head assembly
EP3092963B1 (en) * 2015-05-12 2017-07-12 Biedermann Technologies GmbH & Co. KG Coupling device for coupling a rod to a bone anchoring element and bone anchoring device with such a coupling device
US9968378B1 (en) 2015-07-22 2018-05-15 University Of South Florida Adaptation sphere saddle
US9615862B1 (en) 2015-11-20 2017-04-11 Spinal Llc Modular head inserter
US9763700B1 (en) 2016-12-14 2017-09-19 Spine Wave, Inc. Polyaxial bone screw

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207678B1 (en) *
US5207678A (en) * 1989-07-20 1993-05-04 Prufer Pedicle screw and receiver member therefore
US5443467A (en) * 1993-03-10 1995-08-22 Biedermann Motech Gmbh Bone screw
US5520690A (en) * 1995-04-13 1996-05-28 Errico; Joseph P. Anterior spinal polyaxial locking screw plate assembly
US5669911A (en) * 1995-04-13 1997-09-23 Fastenetix, L.L.C. Polyaxial pedicle screw
US5672176A (en) * 1995-03-15 1997-09-30 Biedermann; Lutz Anchoring member

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5207678B1 (en) *
US5207678A (en) * 1989-07-20 1993-05-04 Prufer Pedicle screw and receiver member therefore
US5443467A (en) * 1993-03-10 1995-08-22 Biedermann Motech Gmbh Bone screw
US5672176A (en) * 1995-03-15 1997-09-30 Biedermann; Lutz Anchoring member
US5520690A (en) * 1995-04-13 1996-05-28 Errico; Joseph P. Anterior spinal polyaxial locking screw plate assembly
US5531746A (en) * 1995-04-13 1996-07-02 Fastenetix, L.L.C. Posterior spinal polyaxial locking lateral mass screw plate assembly
US5607426A (en) * 1995-04-13 1997-03-04 Fastenletix, L.L.C. Threaded polyaxial locking screw plate assembly
US5669911A (en) * 1995-04-13 1997-09-23 Fastenetix, L.L.C. Polyaxial pedicle screw

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140172023A1 (en) * 2006-04-12 2014-06-19 Alphatec Spine, Inc. Pedicle screw assembly
US9168069B2 (en) 2009-06-15 2015-10-27 Roger P. Jackson Polyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer
US9918745B2 (en) 2009-06-15 2018-03-20 Roger P. Jackson Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet
US9504496B2 (en) 2009-06-15 2016-11-29 Roger P. Jackson Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert
US9480517B2 (en) 2009-06-15 2016-11-01 Roger P. Jackson Polyaxial bone anchor with pop-on shank, shank, friction fit retainer, winged insert and low profile edge lock
US8444681B2 (en) 2009-06-15 2013-05-21 Roger P. Jackson Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert
US9393047B2 (en) 2009-06-15 2016-07-19 Roger P. Jackson Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock
US9451992B2 (en) * 2010-12-01 2016-09-27 Facet-Link Inc. Variable angle bone screw fixation arrangement
US8992579B1 (en) 2011-03-08 2015-03-31 Nuvasive, Inc. Lateral fixation constructs and related methods
US9980753B2 (en) 2011-12-29 2018-05-29 Roger P Jackson pivotal anchor with snap-in-place insert having rotation blocking extensions
US8911479B2 (en) 2012-01-10 2014-12-16 Roger P. Jackson Multi-start closures for open implants
US9060815B1 (en) 2012-03-08 2015-06-23 Nuvasive, Inc. Systems and methods for performing spine surgery
US9579131B1 (en) 2012-03-08 2017-02-28 Nuvasive, Inc. Systems and methods for performing spine surgery
US8992575B1 (en) 2012-06-22 2015-03-31 Seaspine, Inc. Spinal implants having offsets and hooks
US20150230830A1 (en) * 2012-11-09 2015-08-20 Neurovent Llc Percutaneous modular head-to-head cross connector
US9023087B2 (en) * 2012-11-09 2015-05-05 Blackstone Medical, Inc. Percutaneous modular head-to-head cross connector
US9439684B2 (en) * 2012-11-09 2016-09-13 Amendia, Inc. Percutaneous modular head-to-head cross connector
US20140135839A1 (en) * 2012-11-09 2014-05-15 Blackstone Medical, Inc. Percutaneous modular head-to-head cross connector
US9867643B2 (en) 2013-08-13 2018-01-16 Zimmer, Inc. Polyaxial locking mechanism
US9510880B2 (en) 2013-08-13 2016-12-06 Zimmer, Inc. Polyaxial locking mechanism
US9517089B1 (en) 2013-10-08 2016-12-13 Nuvasive, Inc. Bone anchor with offset rod connector
US9603634B1 (en) 2015-11-13 2017-03-28 Amendia, Inc. Percutaneous rod-to-rod cross connector

Also Published As

Publication number Publication date Type
USRE37665E1 (en) 2002-04-16 grant
USRE39089E1 (en) 2006-05-02 grant
US5882350A (en) 1999-03-16 grant

Similar Documents

Publication Publication Date Title
US7163538B2 (en) Posterior rod system
US7163539B2 (en) Biased angle polyaxial pedicle screw assembly
US7604656B2 (en) Apparatus for connecting a longitudinal member to a bone portion
US7922748B2 (en) Removable polyaxial housing for a pedicle screw
US7678137B2 (en) Pedicle screw constructs for spine fixation systems
US7662175B2 (en) Upload shank swivel head bone screw spinal implant
US8002806B2 (en) Bottom loading multi-axial screw assembly
US20080312692A1 (en) Multi-level spinal stabilization system
US20040243126A1 (en) Methods for stabilizing bone using spinal fixation devices
US20050192571A1 (en) Polyaxial pedicle screw assembly
US20100030224A1 (en) Surgical tool and method for connecting a dynamic bone anchor and dynamic vertical rod
US20100100137A1 (en) Dynamic Anchor Assembly for Connecting Elements in Spinal Surgical Procedures
US20090005813A1 (en) Apparatus and methods for spinal implants
US8197518B2 (en) Thread-thru polyaxial pedicle screw system
US20100114180A1 (en) Multi-planar, taper lock screw with additional lock
US20040006342A1 (en) Posterior polyaxial plate system for the spine
US8357181B2 (en) Intervertebral prosthetic device for spinal stabilization and method of implanting same
US5863293A (en) Spinal implant fixation assembly
US20070135817A1 (en) Percutaneous screw assembly
US20100030272A1 (en) Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine
US20090012566A1 (en) System and method for facet joint replacement
US7704270B2 (en) Variable offset connectors and bone fixation methods
US20090254125A1 (en) Top Loading Polyaxial Spine Screw Assembly With One Step Lockup
US5891145A (en) Multi-axial screw
US7918876B2 (en) Spinal implant adjustment device

Legal Events

Date Code Title Description
AS Assignment

Owner name: MEDTRONIC SOFAMOR DANEK, INC., TENNESSEE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FASTENETIX, LLC;REEL/FRAME:022732/0435

Effective date: 20080928

AS Assignment

Owner name: WARSAW ORTHOPEDIC, INC., INDIANA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MEDTRONIC SOFAMOR DANEK, INC.;REEL/FRAME:022773/0631

Effective date: 20090529