CA2528515A1 - Variable offset spinal fixation system - Google Patents
Variable offset spinal fixation system Download PDFInfo
- Publication number
- CA2528515A1 CA2528515A1 CA002528515A CA2528515A CA2528515A1 CA 2528515 A1 CA2528515 A1 CA 2528515A1 CA 002528515 A CA002528515 A CA 002528515A CA 2528515 A CA2528515 A CA 2528515A CA 2528515 A1 CA2528515 A1 CA 2528515A1
- Authority
- CA
- Canada
- Prior art keywords
- ring
- longitudinal
- aperture
- clamp
- bone anchor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS 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
- A61F2/00—Filters 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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7041—Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7037—Screws 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical 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
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/704—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other the longitudinal element passing through a ball-joint in the screw head
Abstract
A bone fixation system for locking a longitudinal member, such as a spinal rod, to a bone anchor element allowing a variable orientation of the axis of the longitudinal member relative to the axis of the bone anchor. A one-piece body element split along a substantially horizontal plane into upper and lower portions by a slot includes a ball element through which a longitudinal member, such as a spinal rod, may pass. A portion of a bone anchor element passes through an aperture having portions on each of the upper and lower portions of the body element. Tightening a set screw draws the upper and lower portions of the body element together and locks the bone anchor and spinal rod into the desired position.
Description
VARIABLE OFFSET SPINAL FI~iATION SYSTEM
FIELD OF THE INVENTION
The present invention relates generally to medical implants and more particularly to a receiving and locking assembly adapted to connect a longitudinal member such as a rod to a bone anchor.
BACKGROUND OF THE INVENTION
There are numerous known medical implants for the treatment of various bone injuries, deformities and disorders. Among these medical implants are spinal fixation systems implanted during a surgical procedure to treat a variety of problems.
These treatments include correction of congenital spinal deformities, repair of spinal injuries and fusion of vertebrae to stabilize degenerative conditions and alleviate chronic lower back pain. Several techniques and systems have been developed for correcting and/or stabilizing the spine and/or facilitating spinal fusion. In one type of system, a longitudinal member, such as a bendable rod, is disposed along a portion of the vertebral column, and is fixed to two or more vertebrae along the length of the column by way of a number of fixation elements. Such vertebral fixation elements can include hooks, screws or bolts of various types, each of which are configured to engage specific portions of the vertebral body. In one example, a surgeon can first attach the vertebral fixation elements to the spine in appropriate anatomic positions, and then connect each vertebral fixation element to the spinal rod. Some fixation elements include a head adapted to receive a rod or other longitudinal member. In other systems, a receiving and locking assembly is used to rigidly connect a rod to a fixation element.
U.S. Patent No. 5,176,680 discloses a device for fixing a spinal rod to vertebral screws. The spinal rod is passed through a split ring which is positioned between the prongs of a vertebral screw having a forked head. The assembly is locked into the desired position by a locking screw threaded between the prongs which and directly onto the split 3 0 ring.
An assembly for fixing a spinal rod to a bone bolt is shown in U.S. Patent No.
5,938,663. The spinal rod is passed through a split ring which is disposed within a clamp of a locking assembly. The threaded head of the bolt passes through a pair of openings in the locking assembly and a locking nut is threaded onto the bolt. As the locking nut is tightened, the locking assembly is sandwiched at a particular location between the locking nut and a medial flange or head on the bolt.
SUMMARY OF INVENTION
The invention is set forth in the claims below, and the following is not in any way to limit, define or otherwise establish the scope of legal protection. In general terms, the present invention relates to an orthopedic apparatus for locking a longitudinal member to a bone anchor member. One embodiment of the present invention relates to an orthopedic apparatus including a bone anchor member having an anchor portion and a shaft portion, a locking assembly having a body member and a compressible ring, and a set screw. The body member includes a lower portion and an upper portion linked by a connecting portion and separated by a slot. The lower portion and the upper portion each include a first aperture and a second aperture. The first aperture is configured such that the shaft portion of the bone anchor member can be passed there through. The second aperture is configured such that the set screw may be threaded therethrough so as to compress the body member. The body member further includes a cavity within the connecting portion, upper portion and lower portion. The compressible ring includes a central passage to receive the longitudinal member and is housed by the body member cavity.
Compression of the body member by the set screw locks the compressible ring and longitudinal member in the desired position.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of one embodiment of an apparatus according to the present invention.
FIG. 1A is a partial cross-sectional view taken along line 13-13 in FIG. 1, and viewed in the direction of the arrows.
FIG. 2 is an exploded perspective view of the embodiment shown in FIG. 1.
FIG. 3 is a further perspective view of the embodiment shown in FIG. 1.
FIG. 4 is a perspective view of the embodiment of a body member shown in FIG.
1.
FIG. 5 is a top view of the embodiment shown in FIG. 4.
FIELD OF THE INVENTION
The present invention relates generally to medical implants and more particularly to a receiving and locking assembly adapted to connect a longitudinal member such as a rod to a bone anchor.
BACKGROUND OF THE INVENTION
There are numerous known medical implants for the treatment of various bone injuries, deformities and disorders. Among these medical implants are spinal fixation systems implanted during a surgical procedure to treat a variety of problems.
These treatments include correction of congenital spinal deformities, repair of spinal injuries and fusion of vertebrae to stabilize degenerative conditions and alleviate chronic lower back pain. Several techniques and systems have been developed for correcting and/or stabilizing the spine and/or facilitating spinal fusion. In one type of system, a longitudinal member, such as a bendable rod, is disposed along a portion of the vertebral column, and is fixed to two or more vertebrae along the length of the column by way of a number of fixation elements. Such vertebral fixation elements can include hooks, screws or bolts of various types, each of which are configured to engage specific portions of the vertebral body. In one example, a surgeon can first attach the vertebral fixation elements to the spine in appropriate anatomic positions, and then connect each vertebral fixation element to the spinal rod. Some fixation elements include a head adapted to receive a rod or other longitudinal member. In other systems, a receiving and locking assembly is used to rigidly connect a rod to a fixation element.
U.S. Patent No. 5,176,680 discloses a device for fixing a spinal rod to vertebral screws. The spinal rod is passed through a split ring which is positioned between the prongs of a vertebral screw having a forked head. The assembly is locked into the desired position by a locking screw threaded between the prongs which and directly onto the split 3 0 ring.
An assembly for fixing a spinal rod to a bone bolt is shown in U.S. Patent No.
5,938,663. The spinal rod is passed through a split ring which is disposed within a clamp of a locking assembly. The threaded head of the bolt passes through a pair of openings in the locking assembly and a locking nut is threaded onto the bolt. As the locking nut is tightened, the locking assembly is sandwiched at a particular location between the locking nut and a medial flange or head on the bolt.
SUMMARY OF INVENTION
The invention is set forth in the claims below, and the following is not in any way to limit, define or otherwise establish the scope of legal protection. In general terms, the present invention relates to an orthopedic apparatus for locking a longitudinal member to a bone anchor member. One embodiment of the present invention relates to an orthopedic apparatus including a bone anchor member having an anchor portion and a shaft portion, a locking assembly having a body member and a compressible ring, and a set screw. The body member includes a lower portion and an upper portion linked by a connecting portion and separated by a slot. The lower portion and the upper portion each include a first aperture and a second aperture. The first aperture is configured such that the shaft portion of the bone anchor member can be passed there through. The second aperture is configured such that the set screw may be threaded therethrough so as to compress the body member. The body member further includes a cavity within the connecting portion, upper portion and lower portion. The compressible ring includes a central passage to receive the longitudinal member and is housed by the body member cavity.
Compression of the body member by the set screw locks the compressible ring and longitudinal member in the desired position.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of one embodiment of an apparatus according to the present invention.
FIG. 1A is a partial cross-sectional view taken along line 13-13 in FIG. 1, and viewed in the direction of the arrows.
FIG. 2 is an exploded perspective view of the embodiment shown in FIG. 1.
FIG. 3 is a further perspective view of the embodiment shown in FIG. 1.
FIG. 4 is a perspective view of the embodiment of a body member shown in FIG.
1.
FIG. 5 is a top view of the embodiment shown in FIG. 4.
FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. 5, and viewed in the direction of the arrows.
FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 4, and viewed in the direction of the arrows.
FIG. 8 is a perspective view of the embodiment of a compressible ring shown in FIG. 1.
FIG. 9 is an end view of the embodiment shown in FIG. 8.
FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 9, and viewed in the direction of the avows.
FIG. 11 is a perspective view of another embodiment of an apparatus according to the present invention.
FIG. 12 is a perspective view of a portion of yet another embodiment of an apparatus according to the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
For the purposes of promoting understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is hereby intended and alterations and modifications in the illustrated device, and further applications of the principles of the present invention as illustrated herein being contemplated, as would normally occur to one skilled in the art to which the invention relates.
Referring first generally to FIGS. 1-3, there is shovm an orthopedic apparatus according to one embodiment of the present invention. Orthopedic apparatus 20 includes a pedicle screw 22, a spinal rod 24, and a locking assembly 26 comprising a body member 28 and a compressible ring 30. Pedicle screw 22 connects to body member 28 substantially along a first axis, and rod 24 its within ring 30 inside body member 28, allowing rod 24 to extend along any of a number of second axes, as further described below. A set screw 32 is provided for compression of locking assembly 26, also as described below.
Pedicle screw 22 includes a threaded portion 34, adapted for insertion into a vertebral body (not shown), and a shaft portion,36. In the illustrated embodiment, shaft portion 36 is substantially cylindrical (i.e. substantially a constant diameter) along its entire length, and is relatively smooth and free of protrusions, ridges, or other obstructions It will be appreciated that shaft portion 36 could have a cross-section other than the circle of a cylindrical shaft, for example a regular hexagonal or similar cross-section, or a roughened surface. Further, other anchoring portions such as a hook may be used in place of threaded portion 34, or hooked members could be used along with threaded embodiments such as pedicle screw 32. Although the term "pedicle screw" is principally used herein, it will be appreciated that element 32 can be threaded, hooked or otherwise configured to engage a bone, and may be configured for attaclnnent to other bones or bone parts. The illustrated embodiment of pedicle screw 22 also includes an upper portion 3 8 adapted to engage a driving tool to facilitate insertion of pedicle screw 22 into the spine or other bone. In a particular embodiment, upper portion 38 includes an internal hexagonal print 40.
Referring now generally to FIGS. 4-7, there is shown an embodiment of body member 28 of locking assembly 26. In this embodiment, body member 28 is a one-piece member split along a substantially horizontal plane. Body member 28 has an upper portion 42 with an upper surface 44 and a lower portion 46. Portions 42 and 46 are linked by a connecting portion 48 and separated by a medial slot 50. Body member 28 further includes a first side 47 and a second side 49.
A first aperture 52 and a second aperture 54 extend through body member 28 and slot 50. In a particular embodiment, apertures 52 and 54 have axes that are substantially parallel. An upper portion 56 of aperture 52 is within upper portion 42 of body member 28, and a lower portion 58 of aperture 52 is within lower portion 46 of body member 28.
An upper portion 60 of aperture 54 is within upper portion 42 of body member 28, and a lower portion 62 of aperture 54 is within lower portion 46 of body member 28.
Upper aperture portion 56 is coaxial with lower aperture portion 58 (FIG. 7) and upper aperture portion 60 is coaxial with lower aperture portion 62.
Each aperture portion 56, 58, 60 and 62 includes an upper edge, a lower edge and an interior surface. Thus, with respect to aperture 52, upper aperture portion 56 has an upper edge 64, a lower edge 66 and an interior surface 68, and lower aperture portion 58 has an upper edge 70, a lower edge 72 and an interior surface 74. Interior surfaces 68 and 74 are smooth and have a substantially constant diameter in one embodiment, or alternatively may be roughened such as with knurling or other surface types or treatments.
Similarly, with respect to aperture 54, upper aperture portion 60 has an upper edge 76, a lower edge 78 and an interior surface 80, and lower aperture portion 62 has an upper edge 82, a lower edge 84 and an interior surface 86. Interior surface 80 is smooth and has a substantially constant diameter in one embodiment. Upper aperture portion 60 may also include a beveled or rounded portion 88. Where set screw 32 is the member that compresses body member 28 (as described further below), interior surface 86 is threaded.
Body element 28 further includes an interior cavity 90. Cavity 90 is open to sides 47 and 49 of body element 28, forming a pair of coaxial openings 92 and 94 (FIG. 7).
Opening 92 has an outer edge 93 and opening 94 has an outer edge 95. In a specific embodiment, the axis of openings 92 and 94 is substantially perpendicular to the axis of aperture 52 (i.e., upper aperture portion 56 and lower aperture portion 58) and/or the axis of aperture 54 (i.e. upper aperture portion 60 and lower aperture portion 62).
Openings 92 and 94 may have a substantially constant diameter which is greater than rod 24.
Alternatively, the outer edges 93 and 95 of openings 92 and 94 may be chamfered so as to allow increased angular positioning of rod 24 passing therethrough, as will be further described below.
With particular reference to FIG. 7, cavity 90 in one embodiment preferably includes a central portion 98, at least a"part of which is bounded by an arcuate (e.g., concave) wall portion 100, and also includes substantially cylindrical lateral portions 102 and 104 on each side. Lateral portion 102 includes a wall 103 and lateral portion 104 includes a wall 105. Lateral portions 102 and 104 have a smaller radius than central portion 98 and all three portions are coaxial, in this particular embodiment.
Between central portion 98 and each cylindrical lateral portion 102 and 104 are edge surfaces 106 and 108.
FIGS. 8-10 show an embodiment of compressible ring 30. Ring 30 includes a substantially centrally located passage 112, forming coaxial openings 111 and 113, and a longitudinal slot 114. Preferably, ring 30 includes a first protrusion 116 and a second protrusion 118 adjacent to slot 114. Alternatively, ring 30 could include a single protrusion adjacent to slot 114. Central passage 112 is sized so as to allow rod 24 to pass therethrough, and be movable translationally and rotationally with respect to ring 30, when ring 30 is in the uncompressed state. Slot 114 allows compression of ring 30 so as to loclc rod 24 in ring 30 as further described below. Optionally, ring 30 can include a surface groove 120 opposite slot 114, as shown in FIG. 9, to render ring 30 more bendable and improve compression of ring 30. The uncompressed outer diameter 122 of ring 30 is selected such that it is less than interior diameter 91 of uncompressed cavity 90, but greater than the interior diameter 91 of cavity 90 when body element 28 is in the compressed state. This relationship between the uncompressed diameters of ring 30 and cavity 90 allows ring 30 to be rotatably orientable relative to cavity 90 prior to compression. In particular, ring 30 can be manipulated during implantation of orthopedic apparatus 20 when ring 30 is disposed within cavity 90, either directly or indirectly by manipulating rod 24 passing through central passage 112 of ring 30, as described further below.
As seen in the embodiment shown in FIG. 10, central passage 112 includes a central portion 124 of at least one arcuate (e.g., concave) internal wall portion 126, and having lateral substantially cylindrical portions 128 and 130 on each side.
Lateral portion 128 includes a wall 129 and lateral portion 130 includes a wall 131. Lateral portions 128 and 130 have a smaller radius than central portion 124 and all three portions are coaxial in this particular embodiment. Between central portion 124 and respective lateral portions 128 and 130 are edge surfaces 132 and 133.
Rod 24 is preferably an essentially smooth (e.g. shot-peeved) substantially cylindrical member of sufficient diameter and strength to resist the loads and stresses. of the spine. It will be appreciated that rod 24 could be threaded or have a regular hexagonal or other polygonal cross-section in other embodiments. Preferably rod 24 can be bent or configured by the surgeon to conform to the treatment or support of the spine desired by the surgeon.
Set screw 32 includes a screw head 136, adapted to engage a driving tool, such as with an internal hexagonal print 138, and a threaded shaft portion 140.
Preferably, screw head 136 also includes a beveled or rounded portion 142 which accommodates beveled or romided portion 88 of upper aperture 60 of body member 28. Optionally, set screw 32 may also include a break away head feature. Examples of set screws having brealc away portions are shown in U.S. Patent Nos. 6,193,719 and 6,478,795, which are incorporated herein by reference in their entireties. FIG. 12 shows an alternative embodiment of orthopedic apparatus 20 which includes a set screw 146 having a break away head portion 148.
The use of orthopedic apparatus 20 and its various components will now be described by reference to attaching rod 24 to a portion of the spine (not shown) via pedicle screw 22 and locking assembly 26. It will be appreciated by those of skill in the art that alternative structures and methods may be used, and alternative parts of the body may be instrumented, while remaining within the scope and spirit of the invention.
A surgical site proximate to the area of the spine to be instrumented is prepared, and a minimally-invasive, open or other incision is made, so as to access the spine.
Pedicle screw 22 is inserted into a vertebra via the incision to a desired depth. In one example, pedicle screw 22 is inserted so that the entire length of its threaded portion 34 is within the bone. Body member 28 is placed over screw 22 so that shaft portion 36 of pedicle screw 22 is inserted through aperture 52 (i.e., lower aperture portion 58 and upper aperture portion 56) of body member 28 as shown in FIG. 1A. Rod 24 and ring 30 have been removed from this particular view for the sake of clarity. Preferably ring 30 is disposed within cavity 90 of body member 28 prior to insertion of body member 28 into the surgical site and over pedicle screw 22. Alternatively, ring 30 may be inserted into cavity 90 subsequent to positioning of body member 28 on pedicle screw 22.
In this particular example, shaft portion 36 is free of protrusions, ridges, or other obstructions so as to allow body element 28 to be positioned at any point along shaft portion 36 as desired. Preferably, body element 28 is positioned along shaft 36 such that body element 28 does not contact vertebral tissue so as not to damage such tissue. Once body element 28 is positioned on pedicle screw 22, rod 24 is inserted into body member 28 and ring 30 so that rod 24 extends through central passage 112. Rod 24 and ring 30 are manipulated by the surgeon until rod 24 is at the desired angle relative to pedicle screw 22.
This maneuverability provides the opportunity to vary the distance between the nearest points of rod 24 and pedicle screw 22, as well as to vary the angle of rod 24 with respect to body member 28 and pedicle screw 22. Alternatively, rod 24 can be inserted through central passage 112 of ring 30 and cavity 90 of body member 28 prior to insertion of pedicle screw 22 through aperture 52 (i.e., upper aperture portion 56 and lower aperture portion 58) of body member 28.
If present, protrusions 116 and 118 on ring 30 as shown in FIG. 6 keep slot substantially aligned with slot 50, e.g. by limiting rotation of ring 30 about the longitudinal axis of central passage 112. It has been found that said aligmnent can allow more complete or efficient compression of ring 30 than if slot 114 and slot 50 are not aligned.
As shown in FIG. 3, rod 24 passing through ring 30 disposed in cavity 90 can have an angle of up to at least 20° with respect to the axis of cavity 90 in each direction. Such angulation allows the surgeon to adjust the position of rod 24 relative to pedicle screw 22 as desired.
Once assembled and positioned as desired, orthopedic apparatus 20 is locked into position. Set screw 32 is inserted into aperture 54 through upper aperture portion 60 and threaded into lower aperture 62 as indicated in FIG. 6. Tightening set screw 32 draws upper portion 42 and lower portion 46 of body member 28 toward one another so as to compress body member 28.
When body member 28 is compressed through the tightening of set screw 32, edges 64 and 66 of upper aperture 56 and edges 70 and 72 of lower aperture 58 pivot along with upper portion 42 and lower portion 46 of body member 28. Edges 66 and 68 are forced into contact with or impinge on shaft portion 36, locking body element 28 to shaft 36 of pedicle screw 22. As body element 28 is compressed (i.e., upper portion 42 and lower portion 46 are forced together), cavity 90 is also compressed. Ring 110 is compressed by walls 100, 101 and 103 of cavity 90 and locking of ring 70 against rotation and translation is assured by edges 106 and 108. As ring 110 is compressed, central passage 112 is also compressed. Walls 125, 126 and 127 of ring 110 are forced against rod 24 to hold rod 24, and edges 132 and 133 lock of the orientation of rod 24 relative to pedicle screw 22.
Preferably, once the components of orthopedic apparatus 20 are locked into the desired orientation, head 136 of set screw 32 is flush or below upper surface 44 of body member 28 as shown in FIG. 1. As noted above, apparatus 20 can include a set screw 146 (FIG. 11) having a break away head portion 148. Preferably, once break away head portion 148 is removed from set screw 146, the remaining portion 150 of set screw 148 is flush or below the upper surface of body member 144.
Another embodiment of a body member 28' is shown in FIG. 12. Body member 28' is substantially the same as body member 28, described above, with the exception that aperture 52 (for accommodating pedicle screw 22) is positioned further away from the axis of cavity 90. Note in FIG. 12 that a line Ll connecting the axes of apertures 52 and 54 forms an obtuse angle with a line L2 perpendicular to the axis of cavity 90.
Such a change allows increased distance between pedicle screw 22 and rod 24 for larger patients or for cases in which additional room and/or different angles between the components of apparatus 20 are indicated.
The components of the assembly are made of a biocompatible material for surgical implantation such as stainless steel, various titanium alloys, appropriate hard plastics or other knov~nn materials.
While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that all changes, modifications and equivalents that come within the spirit of the inventions disclosed are desired to be protected. For example, rod 24 may be connected to ring 30 and body member 28 prior to placement of body member 28 on pedicle screw 22 in the surgical site. In this case, one or more body members 28, each having a ring 30 inserted therein, can be pre-placed on rod 24. After one or more pedicle screws 22 are inserted into bone, rod 24 with pre-placed body members) 28 and rings) 30 can be placed so that body members) 28 are on pedicle screws) 22, as described above.
The articles "a", "an", "said" and "the" are not limited to a singular element, and include one or more such elements.
FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 4, and viewed in the direction of the arrows.
FIG. 8 is a perspective view of the embodiment of a compressible ring shown in FIG. 1.
FIG. 9 is an end view of the embodiment shown in FIG. 8.
FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 9, and viewed in the direction of the avows.
FIG. 11 is a perspective view of another embodiment of an apparatus according to the present invention.
FIG. 12 is a perspective view of a portion of yet another embodiment of an apparatus according to the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
For the purposes of promoting understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is hereby intended and alterations and modifications in the illustrated device, and further applications of the principles of the present invention as illustrated herein being contemplated, as would normally occur to one skilled in the art to which the invention relates.
Referring first generally to FIGS. 1-3, there is shovm an orthopedic apparatus according to one embodiment of the present invention. Orthopedic apparatus 20 includes a pedicle screw 22, a spinal rod 24, and a locking assembly 26 comprising a body member 28 and a compressible ring 30. Pedicle screw 22 connects to body member 28 substantially along a first axis, and rod 24 its within ring 30 inside body member 28, allowing rod 24 to extend along any of a number of second axes, as further described below. A set screw 32 is provided for compression of locking assembly 26, also as described below.
Pedicle screw 22 includes a threaded portion 34, adapted for insertion into a vertebral body (not shown), and a shaft portion,36. In the illustrated embodiment, shaft portion 36 is substantially cylindrical (i.e. substantially a constant diameter) along its entire length, and is relatively smooth and free of protrusions, ridges, or other obstructions It will be appreciated that shaft portion 36 could have a cross-section other than the circle of a cylindrical shaft, for example a regular hexagonal or similar cross-section, or a roughened surface. Further, other anchoring portions such as a hook may be used in place of threaded portion 34, or hooked members could be used along with threaded embodiments such as pedicle screw 32. Although the term "pedicle screw" is principally used herein, it will be appreciated that element 32 can be threaded, hooked or otherwise configured to engage a bone, and may be configured for attaclnnent to other bones or bone parts. The illustrated embodiment of pedicle screw 22 also includes an upper portion 3 8 adapted to engage a driving tool to facilitate insertion of pedicle screw 22 into the spine or other bone. In a particular embodiment, upper portion 38 includes an internal hexagonal print 40.
Referring now generally to FIGS. 4-7, there is shown an embodiment of body member 28 of locking assembly 26. In this embodiment, body member 28 is a one-piece member split along a substantially horizontal plane. Body member 28 has an upper portion 42 with an upper surface 44 and a lower portion 46. Portions 42 and 46 are linked by a connecting portion 48 and separated by a medial slot 50. Body member 28 further includes a first side 47 and a second side 49.
A first aperture 52 and a second aperture 54 extend through body member 28 and slot 50. In a particular embodiment, apertures 52 and 54 have axes that are substantially parallel. An upper portion 56 of aperture 52 is within upper portion 42 of body member 28, and a lower portion 58 of aperture 52 is within lower portion 46 of body member 28.
An upper portion 60 of aperture 54 is within upper portion 42 of body member 28, and a lower portion 62 of aperture 54 is within lower portion 46 of body member 28.
Upper aperture portion 56 is coaxial with lower aperture portion 58 (FIG. 7) and upper aperture portion 60 is coaxial with lower aperture portion 62.
Each aperture portion 56, 58, 60 and 62 includes an upper edge, a lower edge and an interior surface. Thus, with respect to aperture 52, upper aperture portion 56 has an upper edge 64, a lower edge 66 and an interior surface 68, and lower aperture portion 58 has an upper edge 70, a lower edge 72 and an interior surface 74. Interior surfaces 68 and 74 are smooth and have a substantially constant diameter in one embodiment, or alternatively may be roughened such as with knurling or other surface types or treatments.
Similarly, with respect to aperture 54, upper aperture portion 60 has an upper edge 76, a lower edge 78 and an interior surface 80, and lower aperture portion 62 has an upper edge 82, a lower edge 84 and an interior surface 86. Interior surface 80 is smooth and has a substantially constant diameter in one embodiment. Upper aperture portion 60 may also include a beveled or rounded portion 88. Where set screw 32 is the member that compresses body member 28 (as described further below), interior surface 86 is threaded.
Body element 28 further includes an interior cavity 90. Cavity 90 is open to sides 47 and 49 of body element 28, forming a pair of coaxial openings 92 and 94 (FIG. 7).
Opening 92 has an outer edge 93 and opening 94 has an outer edge 95. In a specific embodiment, the axis of openings 92 and 94 is substantially perpendicular to the axis of aperture 52 (i.e., upper aperture portion 56 and lower aperture portion 58) and/or the axis of aperture 54 (i.e. upper aperture portion 60 and lower aperture portion 62).
Openings 92 and 94 may have a substantially constant diameter which is greater than rod 24.
Alternatively, the outer edges 93 and 95 of openings 92 and 94 may be chamfered so as to allow increased angular positioning of rod 24 passing therethrough, as will be further described below.
With particular reference to FIG. 7, cavity 90 in one embodiment preferably includes a central portion 98, at least a"part of which is bounded by an arcuate (e.g., concave) wall portion 100, and also includes substantially cylindrical lateral portions 102 and 104 on each side. Lateral portion 102 includes a wall 103 and lateral portion 104 includes a wall 105. Lateral portions 102 and 104 have a smaller radius than central portion 98 and all three portions are coaxial, in this particular embodiment.
Between central portion 98 and each cylindrical lateral portion 102 and 104 are edge surfaces 106 and 108.
FIGS. 8-10 show an embodiment of compressible ring 30. Ring 30 includes a substantially centrally located passage 112, forming coaxial openings 111 and 113, and a longitudinal slot 114. Preferably, ring 30 includes a first protrusion 116 and a second protrusion 118 adjacent to slot 114. Alternatively, ring 30 could include a single protrusion adjacent to slot 114. Central passage 112 is sized so as to allow rod 24 to pass therethrough, and be movable translationally and rotationally with respect to ring 30, when ring 30 is in the uncompressed state. Slot 114 allows compression of ring 30 so as to loclc rod 24 in ring 30 as further described below. Optionally, ring 30 can include a surface groove 120 opposite slot 114, as shown in FIG. 9, to render ring 30 more bendable and improve compression of ring 30. The uncompressed outer diameter 122 of ring 30 is selected such that it is less than interior diameter 91 of uncompressed cavity 90, but greater than the interior diameter 91 of cavity 90 when body element 28 is in the compressed state. This relationship between the uncompressed diameters of ring 30 and cavity 90 allows ring 30 to be rotatably orientable relative to cavity 90 prior to compression. In particular, ring 30 can be manipulated during implantation of orthopedic apparatus 20 when ring 30 is disposed within cavity 90, either directly or indirectly by manipulating rod 24 passing through central passage 112 of ring 30, as described further below.
As seen in the embodiment shown in FIG. 10, central passage 112 includes a central portion 124 of at least one arcuate (e.g., concave) internal wall portion 126, and having lateral substantially cylindrical portions 128 and 130 on each side.
Lateral portion 128 includes a wall 129 and lateral portion 130 includes a wall 131. Lateral portions 128 and 130 have a smaller radius than central portion 124 and all three portions are coaxial in this particular embodiment. Between central portion 124 and respective lateral portions 128 and 130 are edge surfaces 132 and 133.
Rod 24 is preferably an essentially smooth (e.g. shot-peeved) substantially cylindrical member of sufficient diameter and strength to resist the loads and stresses. of the spine. It will be appreciated that rod 24 could be threaded or have a regular hexagonal or other polygonal cross-section in other embodiments. Preferably rod 24 can be bent or configured by the surgeon to conform to the treatment or support of the spine desired by the surgeon.
Set screw 32 includes a screw head 136, adapted to engage a driving tool, such as with an internal hexagonal print 138, and a threaded shaft portion 140.
Preferably, screw head 136 also includes a beveled or rounded portion 142 which accommodates beveled or romided portion 88 of upper aperture 60 of body member 28. Optionally, set screw 32 may also include a break away head feature. Examples of set screws having brealc away portions are shown in U.S. Patent Nos. 6,193,719 and 6,478,795, which are incorporated herein by reference in their entireties. FIG. 12 shows an alternative embodiment of orthopedic apparatus 20 which includes a set screw 146 having a break away head portion 148.
The use of orthopedic apparatus 20 and its various components will now be described by reference to attaching rod 24 to a portion of the spine (not shown) via pedicle screw 22 and locking assembly 26. It will be appreciated by those of skill in the art that alternative structures and methods may be used, and alternative parts of the body may be instrumented, while remaining within the scope and spirit of the invention.
A surgical site proximate to the area of the spine to be instrumented is prepared, and a minimally-invasive, open or other incision is made, so as to access the spine.
Pedicle screw 22 is inserted into a vertebra via the incision to a desired depth. In one example, pedicle screw 22 is inserted so that the entire length of its threaded portion 34 is within the bone. Body member 28 is placed over screw 22 so that shaft portion 36 of pedicle screw 22 is inserted through aperture 52 (i.e., lower aperture portion 58 and upper aperture portion 56) of body member 28 as shown in FIG. 1A. Rod 24 and ring 30 have been removed from this particular view for the sake of clarity. Preferably ring 30 is disposed within cavity 90 of body member 28 prior to insertion of body member 28 into the surgical site and over pedicle screw 22. Alternatively, ring 30 may be inserted into cavity 90 subsequent to positioning of body member 28 on pedicle screw 22.
In this particular example, shaft portion 36 is free of protrusions, ridges, or other obstructions so as to allow body element 28 to be positioned at any point along shaft portion 36 as desired. Preferably, body element 28 is positioned along shaft 36 such that body element 28 does not contact vertebral tissue so as not to damage such tissue. Once body element 28 is positioned on pedicle screw 22, rod 24 is inserted into body member 28 and ring 30 so that rod 24 extends through central passage 112. Rod 24 and ring 30 are manipulated by the surgeon until rod 24 is at the desired angle relative to pedicle screw 22.
This maneuverability provides the opportunity to vary the distance between the nearest points of rod 24 and pedicle screw 22, as well as to vary the angle of rod 24 with respect to body member 28 and pedicle screw 22. Alternatively, rod 24 can be inserted through central passage 112 of ring 30 and cavity 90 of body member 28 prior to insertion of pedicle screw 22 through aperture 52 (i.e., upper aperture portion 56 and lower aperture portion 58) of body member 28.
If present, protrusions 116 and 118 on ring 30 as shown in FIG. 6 keep slot substantially aligned with slot 50, e.g. by limiting rotation of ring 30 about the longitudinal axis of central passage 112. It has been found that said aligmnent can allow more complete or efficient compression of ring 30 than if slot 114 and slot 50 are not aligned.
As shown in FIG. 3, rod 24 passing through ring 30 disposed in cavity 90 can have an angle of up to at least 20° with respect to the axis of cavity 90 in each direction. Such angulation allows the surgeon to adjust the position of rod 24 relative to pedicle screw 22 as desired.
Once assembled and positioned as desired, orthopedic apparatus 20 is locked into position. Set screw 32 is inserted into aperture 54 through upper aperture portion 60 and threaded into lower aperture 62 as indicated in FIG. 6. Tightening set screw 32 draws upper portion 42 and lower portion 46 of body member 28 toward one another so as to compress body member 28.
When body member 28 is compressed through the tightening of set screw 32, edges 64 and 66 of upper aperture 56 and edges 70 and 72 of lower aperture 58 pivot along with upper portion 42 and lower portion 46 of body member 28. Edges 66 and 68 are forced into contact with or impinge on shaft portion 36, locking body element 28 to shaft 36 of pedicle screw 22. As body element 28 is compressed (i.e., upper portion 42 and lower portion 46 are forced together), cavity 90 is also compressed. Ring 110 is compressed by walls 100, 101 and 103 of cavity 90 and locking of ring 70 against rotation and translation is assured by edges 106 and 108. As ring 110 is compressed, central passage 112 is also compressed. Walls 125, 126 and 127 of ring 110 are forced against rod 24 to hold rod 24, and edges 132 and 133 lock of the orientation of rod 24 relative to pedicle screw 22.
Preferably, once the components of orthopedic apparatus 20 are locked into the desired orientation, head 136 of set screw 32 is flush or below upper surface 44 of body member 28 as shown in FIG. 1. As noted above, apparatus 20 can include a set screw 146 (FIG. 11) having a break away head portion 148. Preferably, once break away head portion 148 is removed from set screw 146, the remaining portion 150 of set screw 148 is flush or below the upper surface of body member 144.
Another embodiment of a body member 28' is shown in FIG. 12. Body member 28' is substantially the same as body member 28, described above, with the exception that aperture 52 (for accommodating pedicle screw 22) is positioned further away from the axis of cavity 90. Note in FIG. 12 that a line Ll connecting the axes of apertures 52 and 54 forms an obtuse angle with a line L2 perpendicular to the axis of cavity 90.
Such a change allows increased distance between pedicle screw 22 and rod 24 for larger patients or for cases in which additional room and/or different angles between the components of apparatus 20 are indicated.
The components of the assembly are made of a biocompatible material for surgical implantation such as stainless steel, various titanium alloys, appropriate hard plastics or other knov~nn materials.
While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that all changes, modifications and equivalents that come within the spirit of the inventions disclosed are desired to be protected. For example, rod 24 may be connected to ring 30 and body member 28 prior to placement of body member 28 on pedicle screw 22 in the surgical site. In this case, one or more body members 28, each having a ring 30 inserted therein, can be pre-placed on rod 24. After one or more pedicle screws 22 are inserted into bone, rod 24 with pre-placed body members) 28 and rings) 30 can be placed so that body members) 28 are on pedicle screws) 22, as described above.
The articles "a", "an", "said" and "the" are not limited to a singular element, and include one or more such elements.
Claims (18)
1. A orthopedic apparatus comprising:
a bone anchor member having an anchoring portion and a shaft portion;
a longitudinal member;
a locking assembly having a body member and a compressible ring, said assembly connecting said bone anchor member and said longitudinal member; and a set screw connected to said body member;
wherein said body member includes a lower portion and an upper portion linked by a connecting portion and separated by a slot, said lower portion and said upper portion each including a first aperture and a second aperture, said first aperture being configured such that said shaft portion of said bone anchor member can be passed therethrough, said second aperture being configured such that said set screw can be inserted therein so as to compress said body member, said body element further including a cavity for accommodating said ring and a portion of said longitudinal member;
wherein said compressible ring includes a central passage to receive a portion of said longitudinal member, and wherein compression of said body member by said set screw locks said ring and longitudinal member in a desired position relative to said body member, and said bone anchor member relative to said body member.
a bone anchor member having an anchoring portion and a shaft portion;
a longitudinal member;
a locking assembly having a body member and a compressible ring, said assembly connecting said bone anchor member and said longitudinal member; and a set screw connected to said body member;
wherein said body member includes a lower portion and an upper portion linked by a connecting portion and separated by a slot, said lower portion and said upper portion each including a first aperture and a second aperture, said first aperture being configured such that said shaft portion of said bone anchor member can be passed therethrough, said second aperture being configured such that said set screw can be inserted therein so as to compress said body member, said body element further including a cavity for accommodating said ring and a portion of said longitudinal member;
wherein said compressible ring includes a central passage to receive a portion of said longitudinal member, and wherein compression of said body member by said set screw locks said ring and longitudinal member in a desired position relative to said body member, and said bone anchor member relative to said body member.
2. The orthopedic apparatus of claim 1 wherein said first aperture is smooth-walled.
3. The orthopedic apparatus of claim 1 wherein said bone anchor member is a pedicle screw.
4. The orthopedic apparatus of claim 1 wherein said longitudinal member is a spinal rod.
5. The orthopedic apparatus of claim 1 wherein said set screw includes a break-away head portion.
6. The orthopedic apparatus of claim 1 wherein said compressible ring further includes a longitudinal slot.
7. The orthopedic apparatus of claim 6 wherein said compressible ring further includes a groove opposite said longitudinal slot about the axis of said compressible ring.
8. The orthopedic apparatus of claim 6 wherein said compressible ring further includes at least one protrusion adjacent to said longitudinal slot.
9. The orthopedic apparatus of claim 8 wherein said compressible ring further includes two protrusions adjacent to said longitudinal slot.
10. The orthopedic apparatus of claim 6 wherein said central passage further includes a wall portion having at least one edge surface.
11. An orthopedic apparatus, comprising:
a bone anchor member having a shaft portion and a bone connecting portion;
a longitudinal support member;
a clamp having a medial slot, a first aperture for accommodating said bone anchor member, a second aperture, and a cavity transverse to said first aperture, said clamp having an uncompressed state and a compressed state in which said cavity is radially smaller than when said clamp is in said uncompressed state;
a split ring surrounding a portion of said longitudinal support member, said split ring having an uncompressed state and a compressed state, said split ring being within said cavity of said clamp and being rotationally movable with respect to said clamp when said clamp is in said uncompressed state; and a set screw inserted in said second aperture of said clamp, said set screw providing a force resulting in changing said clamp from said uncompressed state to said compressed state, thereby compressing said split ring and securing said split ring and said longitudinal member against movement with respect to each other and with respect to said clamp.
a bone anchor member having a shaft portion and a bone connecting portion;
a longitudinal support member;
a clamp having a medial slot, a first aperture for accommodating said bone anchor member, a second aperture, and a cavity transverse to said first aperture, said clamp having an uncompressed state and a compressed state in which said cavity is radially smaller than when said clamp is in said uncompressed state;
a split ring surrounding a portion of said longitudinal support member, said split ring having an uncompressed state and a compressed state, said split ring being within said cavity of said clamp and being rotationally movable with respect to said clamp when said clamp is in said uncompressed state; and a set screw inserted in said second aperture of said clamp, said set screw providing a force resulting in changing said clamp from said uncompressed state to said compressed state, thereby compressing said split ring and securing said split ring and said longitudinal member against movement with respect to each other and with respect to said clamp.
12 12. The apparatus of claim 11, wherein said clamp in said uncompressed state is movable with respect to said bone anchor member, and said clamp in said compressed state contacts said shaft portion of said bone anchor member to secure said clamp and said bone anchor member with respect to each other.
13. The apparatus of claim 12, wherein said bone connecting portion of said bone anchor member is a threaded portion, and said shaft portion has a top end and a bottom end immediately adjacent said threaded portion, and said shaft portion has a substantially constant diameter.
14. The apparatus of claim 11, wherein said ring includes a substantially longitudinal slot.
15. The apparatus of claim 14, wherein said ring includes a substantially longitudinal groove approximately diametrically opposite said longitudinal slot.
16. The apparatus of claim 14, wherein said ring has a longitudinal axis and includes at least one protrusion adjacent said longitudinal slot, said protrusion limiting rotation of said ring around said longitudinal axis with respect to said clamp.
17. The apparatus of claim 11, wherein said set screw includes a break-away head portion.
18. The apparatus of claim 11, wherein said longitudinal member is a spinal rod.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/459,628 US7270665B2 (en) | 2003-06-11 | 2003-06-11 | Variable offset spinal fixation system |
US10/459,628 | 2003-06-11 | ||
PCT/US2004/018282 WO2004110289A1 (en) | 2003-06-11 | 2004-06-09 | Variable offset spinal fixation system |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2528515A1 true CA2528515A1 (en) | 2004-12-23 |
Family
ID=33510841
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002528515A Abandoned CA2528515A1 (en) | 2003-06-11 | 2004-06-09 | Variable offset spinal fixation system |
Country Status (11)
Country | Link |
---|---|
US (1) | US7270665B2 (en) |
EP (1) | EP1635722B1 (en) |
JP (1) | JP2007500581A (en) |
KR (1) | KR101094547B1 (en) |
CN (1) | CN100462058C (en) |
AT (1) | ATE398972T1 (en) |
AU (1) | AU2004247116B2 (en) |
CA (1) | CA2528515A1 (en) |
DE (1) | DE602004014613D1 (en) |
ES (1) | ES2308210T3 (en) |
WO (1) | WO2004110289A1 (en) |
Families Citing this family (204)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9561110B2 (en) | 2000-07-18 | 2017-02-07 | Encore Medical, L.P. | Elbow prosthesis |
US10231839B2 (en) * | 2000-07-18 | 2019-03-19 | Encore Medical, L.P. | Elbow prosthesis |
US8932362B2 (en) | 2000-07-18 | 2015-01-13 | Biomet Manufacturing, Llc | Elbow prosthesis |
US7247170B2 (en) | 2000-07-18 | 2007-07-24 | Biomet Manufacturing Corp. | Elbow prosthesis |
US8998995B2 (en) | 2000-07-18 | 2015-04-07 | Biomet Manufacturing, Llc | Elbow prosthesis |
US7833250B2 (en) | 2004-11-10 | 2010-11-16 | Jackson Roger P | Polyaxial bone screw with helically wound capture connection |
US10729469B2 (en) | 2006-01-09 | 2020-08-04 | Roger P. Jackson | Flexible spinal stabilization assembly with spacer having off-axis core member |
US8292926B2 (en) | 2005-09-30 | 2012-10-23 | Jackson Roger P | Dynamic stabilization connecting member with elastic core and outer sleeve |
US10258382B2 (en) | 2007-01-18 | 2019-04-16 | Roger P. Jackson | Rod-cord dynamic connection assemblies with slidable bone anchor attachment members along the cord |
US7862587B2 (en) | 2004-02-27 | 2011-01-04 | Jackson Roger P | Dynamic stabilization assemblies, tool set and method |
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 |
FR2835735B1 (en) * | 2002-02-11 | 2004-11-12 | Fixano | VERTEBRAL ARTHRODESIS MATERIAL |
US8876868B2 (en) | 2002-09-06 | 2014-11-04 | Roger P. Jackson | Helical guide and advancement flange with radially loaded lip |
WO2006052796A2 (en) | 2004-11-10 | 2006-05-18 | Jackson Roger P | Helical guide and advancement flange with break-off extensions |
US6716214B1 (en) | 2003-06-18 | 2004-04-06 | Roger P. Jackson | Polyaxial bone screw with spline capture connection |
US7621918B2 (en) | 2004-11-23 | 2009-11-24 | Jackson Roger P | Spinal fixation tool set and method |
US7615068B2 (en) * | 2003-05-02 | 2009-11-10 | Applied Spine Technologies, Inc. | Mounting mechanisms for pedicle screws and related assemblies |
US7377923B2 (en) | 2003-05-22 | 2008-05-27 | Alphatec Spine, Inc. | Variable angle spinal screw assembly |
US8377102B2 (en) | 2003-06-18 | 2013-02-19 | Roger P. Jackson | Polyaxial bone anchor with spline capture connection and lower pressure insert |
US8398682B2 (en) | 2003-06-18 | 2013-03-19 | Roger P. Jackson | Polyaxial bone screw assembly |
US8366753B2 (en) | 2003-06-18 | 2013-02-05 | Jackson Roger P | Polyaxial bone screw assembly with fixed retaining structure |
US8257398B2 (en) | 2003-06-18 | 2012-09-04 | Jackson Roger P | Polyaxial bone screw with cam capture |
US7967850B2 (en) | 2003-06-18 | 2011-06-28 | Jackson Roger P | Polyaxial bone anchor with helical capture connection, insert and dual locking assembly |
US8936623B2 (en) | 2003-06-18 | 2015-01-20 | Roger P. Jackson | Polyaxial bone screw assembly |
US7776067B2 (en) | 2005-05-27 | 2010-08-17 | Jackson Roger P | Polyaxial bone screw with shank articulation pressure insert and method |
US8137386B2 (en) | 2003-08-28 | 2012-03-20 | Jackson Roger P | Polyaxial bone screw apparatus |
US7766915B2 (en) | 2004-02-27 | 2010-08-03 | Jackson Roger P | Dynamic fixation assemblies with inner core and outer coil-like member |
US7618442B2 (en) | 2003-10-21 | 2009-11-17 | Theken Spine, Llc | Implant assembly and method for use in an internal structure stabilization system |
US7588590B2 (en) | 2003-12-10 | 2009-09-15 | Facet Solutions, Inc | Spinal facet implant with spherical implant apposition surface and bone bed and methods of use |
US20050131406A1 (en) * | 2003-12-15 | 2005-06-16 | Archus Orthopedics, Inc. | Polyaxial adjustment of facet joint prostheses |
US7179261B2 (en) | 2003-12-16 | 2007-02-20 | Depuy Spine, Inc. | Percutaneous access devices and bone anchor assemblies |
US11419642B2 (en) | 2003-12-16 | 2022-08-23 | Medos International Sarl | Percutaneous access devices and bone anchor assemblies |
US7527638B2 (en) | 2003-12-16 | 2009-05-05 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal fixation element placement |
US7993373B2 (en) * | 2005-02-22 | 2011-08-09 | Hoy Robert W | Polyaxial orthopedic fastening apparatus |
US8353933B2 (en) | 2007-04-17 | 2013-01-15 | Gmedelaware 2 Llc | Facet joint replacement |
US8562649B2 (en) | 2004-02-17 | 2013-10-22 | Gmedelaware 2 Llc | System and method for multiple level facet joint arthroplasty and fusion |
WO2005092218A1 (en) | 2004-02-27 | 2005-10-06 | Jackson Roger P | Orthopedic implant rod reduction tool set and method |
US8152810B2 (en) | 2004-11-23 | 2012-04-10 | Jackson Roger P | Spinal fixation tool set and method |
US11241261B2 (en) | 2005-09-30 | 2022-02-08 | Roger P Jackson | Apparatus and method for soft spinal stabilization using a tensionable cord and releasable end structure |
US7160300B2 (en) | 2004-02-27 | 2007-01-09 | Jackson Roger P | Orthopedic implant rod reduction tool set and method |
US7214227B2 (en) * | 2004-03-22 | 2007-05-08 | Innovative Spinal Technologies | Closure member for a medical implant device |
US7717939B2 (en) | 2004-03-31 | 2010-05-18 | Depuy Spine, Inc. | Rod attachment for head to head cross connector |
US7507242B2 (en) | 2004-06-02 | 2009-03-24 | Facet Solutions | Surgical measurement and resection framework |
US8021398B2 (en) | 2004-06-09 | 2011-09-20 | Life Spine, Inc. | Spinal fixation system |
US7744635B2 (en) | 2004-06-09 | 2010-06-29 | Spinal Generations, Llc | Spinal fixation system |
US8034082B2 (en) * | 2004-07-08 | 2011-10-11 | Globus Medical, Inc. | Transverse fixation device for spinal fixation systems |
US8114158B2 (en) | 2004-08-03 | 2012-02-14 | Kspine, Inc. | Facet device and method |
US7717938B2 (en) | 2004-08-27 | 2010-05-18 | Depuy Spine, Inc. | Dual rod cross connectors and inserter tools |
US7651502B2 (en) | 2004-09-24 | 2010-01-26 | Jackson Roger P | Spinal fixation tool set and method for rod reduction and fastener insertion |
US7766940B2 (en) | 2004-12-30 | 2010-08-03 | Depuy Spine, Inc. | Posterior stabilization system |
US7896906B2 (en) | 2004-12-30 | 2011-03-01 | Depuy Spine, Inc. | Artificial facet joint |
US20060084976A1 (en) | 2004-09-30 | 2006-04-20 | Depuy Spine, Inc. | Posterior stabilization systems and methods |
US8092496B2 (en) | 2004-09-30 | 2012-01-10 | Depuy Spine, Inc. | Methods and devices for posterior stabilization |
US8926672B2 (en) | 2004-11-10 | 2015-01-06 | Roger P. Jackson | Splay control closure for open bone anchor |
WO2006057837A1 (en) | 2004-11-23 | 2006-06-01 | Jackson Roger P | Spinal fixation tool attachment structure |
US9216041B2 (en) | 2009-06-15 | 2015-12-22 | Roger P. Jackson | Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts |
US7875065B2 (en) | 2004-11-23 | 2011-01-25 | Jackson Roger P | Polyaxial bone screw with multi-part shank retainer and pressure insert |
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 |
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 |
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 |
US9980753B2 (en) | 2009-06-15 | 2018-05-29 | Roger P Jackson | pivotal anchor with snap-in-place insert having rotation blocking extensions |
ATE524121T1 (en) | 2004-11-24 | 2011-09-15 | Abdou Samy | DEVICES FOR PLACING AN ORTHOPEDIC INTERVERTEBRAL IMPLANT |
ES2303038T3 (en) * | 2004-11-30 | 2008-08-01 | Stryker Trauma Sa | INSERTION PIECE FOR A CLAMPING ELEMENT, CLAMPING ELEMENT WITH AN INSERTION PIECE OF THIS TYPE, AND ARTICULATED UNION FORMED IN THIS MODE. |
US10076361B2 (en) | 2005-02-22 | 2018-09-18 | Roger P. Jackson | Polyaxial bone screw with spherical capture, compression and alignment and retention structures |
US7901437B2 (en) | 2007-01-26 | 2011-03-08 | Jackson Roger P | Dynamic stabilization member with molded connection |
US7594924B2 (en) * | 2005-03-03 | 2009-09-29 | Accelerated Innovation, Llc | Spinal stabilization using bone anchor seat and cross coupling with improved locking feature |
US8167913B2 (en) * | 2005-03-03 | 2012-05-01 | Altus Partners, Llc | Spinal stabilization using bone anchor and anchor seat with tangential locking feature |
US20060233597A1 (en) * | 2005-04-18 | 2006-10-19 | Ensign Micheal D | Cam based rod connection system and method |
US9942511B2 (en) | 2005-10-31 | 2018-04-10 | Invention Science Fund I, Llc | Preservation/degradation of video/audio aspects of a data stream |
US8758343B2 (en) * | 2005-04-27 | 2014-06-24 | DePuy Synthes Products, LLC | Bone fixation apparatus |
WO2007022790A1 (en) * | 2005-08-23 | 2007-03-01 | Synthes Gmbh | An osteosynthetic clamp for attaching a bone anchor to a support rod |
US8105368B2 (en) | 2005-09-30 | 2012-01-31 | Jackson Roger P | Dynamic stabilization connecting member with slitted core and outer sleeve |
US7927359B2 (en) * | 2005-10-06 | 2011-04-19 | Paradigm Spine, Llc | Polyaxial screw |
US8100946B2 (en) | 2005-11-21 | 2012-01-24 | Synthes Usa, Llc | Polyaxial bone anchors with increased angulation |
US9744279B2 (en) * | 2005-12-08 | 2017-08-29 | Heartware, Inc. | Implant connector |
US8029546B2 (en) * | 2005-12-15 | 2011-10-04 | Warsaw Orthopedic, Inc. | Variable angle offset spinal connector assembly |
US7704271B2 (en) | 2005-12-19 | 2010-04-27 | Abdou M Samy | Devices and methods for inter-vertebral orthopedic device placement |
EP1971282A2 (en) | 2006-01-10 | 2008-09-24 | Life Spine, Inc. | Pedicle screw constructs and spinal rod attachment assemblies |
US20070191842A1 (en) * | 2006-01-30 | 2007-08-16 | Sdgi Holdings, Inc. | Spinal fixation devices and methods of use |
US20070191844A1 (en) * | 2006-01-31 | 2007-08-16 | Sdgi Holdings, Inc. | In-series, dual locking mechanism device |
US8075604B2 (en) * | 2006-02-16 | 2011-12-13 | Warsaw Orthopedic, Inc. | Multi-thread bone screw and method |
US7585299B2 (en) * | 2006-02-17 | 2009-09-08 | Warsaw Orthopedic, Inc. | Dorsal adjusting spinal connector assembly |
ZA200808411B (en) | 2006-04-11 | 2009-12-30 | Synthes Gmbh | Minimally invasive fixation system |
US20070270859A1 (en) * | 2006-04-28 | 2007-11-22 | Sdgi Holdings, Inc. | Orthopedic screw with break away drive |
WO2008014477A1 (en) * | 2006-07-27 | 2008-01-31 | Synthes U.S.A. Llc A Delaware Limited Liability Company | Outrigger |
US8388660B1 (en) | 2006-08-01 | 2013-03-05 | Samy Abdou | Devices and methods for superior fixation of orthopedic devices onto the vertebral column |
US8167910B2 (en) * | 2006-10-16 | 2012-05-01 | Innovative Delta Technology Llc | Bone screw and associated assembly and methods of use thereof |
US8361117B2 (en) | 2006-11-08 | 2013-01-29 | Depuy Spine, Inc. | Spinal cross connectors |
EP2088945A4 (en) | 2006-12-08 | 2010-02-17 | Roger P Jackson | Tool system for dynamic spinal implants |
US7828824B2 (en) * | 2006-12-15 | 2010-11-09 | Depuy Spine, Inc. | Facet joint prosthesis |
US7744632B2 (en) | 2006-12-20 | 2010-06-29 | Aesculap Implant Systems, Inc. | Rod to rod connector |
US8475498B2 (en) | 2007-01-18 | 2013-07-02 | Roger P. Jackson | Dynamic stabilization connecting member with cord connection |
US8366745B2 (en) | 2007-05-01 | 2013-02-05 | Jackson Roger P | Dynamic stabilization assembly having pre-compressed spacers with differential displacements |
US10792074B2 (en) | 2007-01-22 | 2020-10-06 | Roger P. Jackson | Pivotal bone anchor assemly with twist-in-place friction fit insert |
JP4221033B2 (en) * | 2007-02-14 | 2009-02-12 | 昭和医科工業株式会社 | Vertebral connecting member and nut driver |
JP4221032B2 (en) * | 2007-02-14 | 2009-02-12 | 昭和医科工業株式会社 | connector |
US20080221688A1 (en) * | 2007-03-09 | 2008-09-11 | Warsaw Orthopedic, Inc. | Method of Maintaining Fatigue Performance In A Bone-Engaging Implant |
US20080221681A1 (en) * | 2007-03-09 | 2008-09-11 | Warsaw Orthopedic, Inc. | Methods for Improving Fatigue Performance of Implants With Osteointegrating Coatings |
US10383660B2 (en) | 2007-05-01 | 2019-08-20 | Roger P. Jackson | Soft stabilization assemblies with pretensioned cords |
US8114134B2 (en) | 2007-06-05 | 2012-02-14 | Spartek Medical, Inc. | Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine |
US8083772B2 (en) | 2007-06-05 | 2011-12-27 | Spartek Medical, Inc. | Dynamic spinal rod assembly and method for dynamic stabilization of the spine |
US8048121B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Spine implant with a defelction rod system anchored to a bone anchor and method |
US8092501B2 (en) | 2007-06-05 | 2012-01-10 | Spartek Medical, Inc. | Dynamic spinal rod and method for dynamic stabilization of the spine |
US8048115B2 (en) | 2007-06-05 | 2011-11-01 | Spartek Medical, Inc. | Surgical tool and method for implantation of a dynamic bone anchor |
US8021396B2 (en) | 2007-06-05 | 2011-09-20 | Spartek Medical, Inc. | Configurable dynamic spinal rod and method for dynamic stabilization of the spine |
US8147520B2 (en) | 2007-06-05 | 2012-04-03 | Spartek Medical, Inc. | Horizontally loaded dynamic stabilization and motion preservation spinal implantation system and method |
CA2689965A1 (en) | 2007-06-06 | 2008-12-18 | Kspine, Inc. | Medical device and method to correct deformity |
EP2441401A3 (en) * | 2007-07-19 | 2014-10-01 | Synthes GmbH | Clamps used for interconnecting a bone anchor to a rod |
US9439681B2 (en) | 2007-07-20 | 2016-09-13 | DePuy Synthes Products, Inc. | Polyaxial bone fixation element |
US20100030224A1 (en) | 2008-02-26 | 2010-02-04 | Spartek Medical, Inc. | Surgical tool and method for connecting a dynamic bone anchor and dynamic vertical rod |
US8057515B2 (en) | 2008-02-26 | 2011-11-15 | Spartek Medical, Inc. | Load-sharing anchor having a deflectable post and centering spring and method for dynamic stabilization of the spine |
US8211155B2 (en) | 2008-02-26 | 2012-07-03 | Spartek Medical, Inc. | Load-sharing bone anchor having a durable compliant member and method for dynamic stabilization of the spine |
US8337536B2 (en) | 2008-02-26 | 2012-12-25 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post with a compliant ring and method for stabilization of the spine |
US8083775B2 (en) | 2008-02-26 | 2011-12-27 | Spartek Medical, Inc. | Load-sharing bone anchor having a natural center of rotation and method for dynamic stabilization of the spine |
US8267979B2 (en) | 2008-02-26 | 2012-09-18 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and axial spring and method for dynamic stabilization of the spine |
US8333792B2 (en) | 2008-02-26 | 2012-12-18 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and method for dynamic stabilization of the spine |
US8097024B2 (en) | 2008-02-26 | 2012-01-17 | Spartek Medical, Inc. | Load-sharing bone anchor having a deflectable post and method for stabilization of the spine |
US8016861B2 (en) | 2008-02-26 | 2011-09-13 | Spartek Medical, Inc. | Versatile polyaxial connector assembly and method for dynamic stabilization of the spine |
US20090264931A1 (en) * | 2008-04-18 | 2009-10-22 | Warsaw Orthopedic, Inc. | Implantable Article for Use with an Anchor and a Non-Metal Rod |
US8177811B2 (en) * | 2008-07-25 | 2012-05-15 | Clariance | Joint prosthesis for total lumbar arthroplasty by posterior approach |
CA2739997C (en) | 2008-08-01 | 2013-08-13 | Roger P. Jackson | Longitudinal connecting member with sleeved tensioned cords |
US20100049253A1 (en) * | 2008-08-20 | 2010-02-25 | Warsaw Orthopedic, Inc. | Bottom loading connector for attaching a spinal rod to a vertebral member |
US8147523B2 (en) * | 2008-09-09 | 2012-04-03 | Warsaw Orthopedic, Inc. | Offset vertebral rod connector |
EP2337512B1 (en) | 2008-09-12 | 2012-03-14 | Synthes GmbH | Spinal stabilizing and guiding fixation system |
DE09793113T8 (en) | 2008-09-29 | 2013-04-25 | Synthes Gmbh | POLYAXIAL BOTTOM CHARGE SCREW AND BAR ASSEMBLY |
CA2742399A1 (en) | 2008-11-03 | 2010-06-03 | Dustin M. Harvey | Uni-planar bone fixation assembly |
US8828058B2 (en) | 2008-11-11 | 2014-09-09 | Kspine, Inc. | Growth directed vertebral fixation system with distractible connector(s) and apical control |
US9763697B2 (en) * | 2008-12-16 | 2017-09-19 | DePuy Synthes Products, Inc. | Anti-infective spinal rod with surface features |
EP2410929B1 (en) | 2009-03-24 | 2019-06-26 | Stabiliz Orthopedics, LLC | Orthopedic fixation device with bioresorbable layer |
AU2015230721B2 (en) * | 2009-03-26 | 2017-11-16 | K2M, Inc. | Semi - constrained anchoring system for correcting a spinal deformity |
US8357182B2 (en) | 2009-03-26 | 2013-01-22 | Kspine, Inc. | Alignment system with longitudinal support features |
CN102368967B (en) | 2009-04-15 | 2016-03-02 | 斯恩蒂斯有限公司 | For the revision connector of spinal structure |
KR101767274B1 (en) | 2009-05-20 | 2017-08-10 | 신세스 게엠바하 | Patient-mounted retraction |
CN103826560A (en) | 2009-06-15 | 2014-05-28 | 罗杰.P.杰克逊 | Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet |
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 |
US11229457B2 (en) | 2009-06-15 | 2022-01-25 | Roger P. Jackson | Pivotal bone anchor assembly with insert tool deployment |
US9668771B2 (en) | 2009-06-15 | 2017-06-06 | Roger P Jackson | Soft stabilization assemblies with off-set connector |
EP2442738B1 (en) * | 2009-06-17 | 2014-04-30 | Synthes GmbH | Revision connector for spinal constructs |
US9168071B2 (en) | 2009-09-15 | 2015-10-27 | K2M, Inc. | Growth modulation system |
US9034050B2 (en) | 2009-09-18 | 2015-05-19 | Biomet Manufacturing, Llc | Elbow prosthesis |
WO2011043805A1 (en) | 2009-10-05 | 2011-04-14 | Roger Jackson P | Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit |
CN102695465A (en) | 2009-12-02 | 2012-09-26 | 斯帕泰克医疗股份有限公司 | Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod |
US8764806B2 (en) | 2009-12-07 | 2014-07-01 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US8317837B2 (en) * | 2010-02-05 | 2012-11-27 | Warsaw Orthopedic, Inc. | Connector and method |
US8617216B2 (en) * | 2010-04-05 | 2013-12-31 | David L. Brumfield | Fully-adjustable bone fixation device |
US8535318B2 (en) | 2010-04-23 | 2013-09-17 | DePuy Synthes Products, LLC | Minimally invasive instrument set, devices and related methods |
US20110307015A1 (en) | 2010-06-10 | 2011-12-15 | Spartek Medical, Inc. | Adaptive spinal rod and methods for stabilization of the spine |
JP2013540468A (en) | 2010-09-08 | 2013-11-07 | ロジャー・ピー・ジャクソン | Dynamic fixing member having an elastic part and an inelastic part |
PL2632696T3 (en) | 2010-10-27 | 2021-03-08 | Rize Inc. | Process and apparatus for fabrication of three-dimensional objects |
GB2502449A (en) | 2010-11-02 | 2013-11-27 | Roger P Jackson | Polyaxial bone anchor with pop-on shank and pivotable retainer |
EP2460482A1 (en) | 2010-12-03 | 2012-06-06 | Zimmer Spine | Rod holding device |
US9387013B1 (en) | 2011-03-01 | 2016-07-12 | Nuvasive, Inc. | Posterior cervical fixation system |
US9247964B1 (en) | 2011-03-01 | 2016-02-02 | Nuasive, Inc. | Spinal Cross-connector |
US8992579B1 (en) * | 2011-03-08 | 2015-03-31 | Nuvasive, Inc. | Lateral fixation constructs and related methods |
JP5865479B2 (en) | 2011-03-24 | 2016-02-17 | ロジャー・ピー・ジャクソン | Multiaxial bone anchor with compound joint and pop-mounted shank |
WO2012139130A1 (en) | 2011-04-07 | 2012-10-11 | Blackstone Medical, Inc. | Clamp for spinal cross connecting device |
CN103717159B (en) | 2011-05-27 | 2016-08-17 | 新特斯有限责任公司 | Minimally invasive spine fixed system including vertebrae aligned feature |
CA2838047A1 (en) | 2011-06-03 | 2012-12-06 | Kspine, Inc. | Spinal correction system actuators |
US9005249B2 (en) | 2011-07-11 | 2015-04-14 | Life Spine, Inc. | Spinal rod connector assembly |
US8845728B1 (en) | 2011-09-23 | 2014-09-30 | Samy Abdou | Spinal fixation devices and methods of use |
WO2014172632A2 (en) | 2011-11-16 | 2014-10-23 | Kspine, Inc. | Spinal correction and secondary stabilization |
US9468468B2 (en) | 2011-11-16 | 2016-10-18 | K2M, Inc. | Transverse connector for spinal stabilization system |
US9451987B2 (en) | 2011-11-16 | 2016-09-27 | K2M, Inc. | System and method for spinal correction |
US9468469B2 (en) | 2011-11-16 | 2016-10-18 | K2M, Inc. | Transverse coupler adjuster spinal correction systems and methods |
US8920472B2 (en) | 2011-11-16 | 2014-12-30 | Kspine, Inc. | Spinal correction and secondary stabilization |
US8956361B2 (en) | 2011-12-19 | 2015-02-17 | Amendia, Inc. | Extended tab bone screw system |
US8945186B2 (en) | 2011-12-30 | 2015-02-03 | Blackstone Medical, Inc. | Multi-axial spinal cross connecting device |
US8556942B2 (en) | 2011-12-30 | 2013-10-15 | Blackstone Medical, Inc. | Occipito-cervical fixation assembly and method for constructing same |
US8911479B2 (en) | 2012-01-10 | 2014-12-16 | Roger P. Jackson | Multi-start closures for open implants |
US8430916B1 (en) | 2012-02-07 | 2013-04-30 | Spartek Medical, Inc. | Spinal rod connectors, methods of use, and spinal prosthesis incorporating spinal rod connectors |
US20130226240A1 (en) | 2012-02-22 | 2013-08-29 | Samy Abdou | Spinous process fixation devices and methods of use |
US9060815B1 (en) | 2012-03-08 | 2015-06-23 | Nuvasive, Inc. | Systems and methods for performing spine surgery |
US8771319B2 (en) | 2012-04-16 | 2014-07-08 | Aesculap Implant Systems, Llc | Rod to rod cross connector |
US8828056B2 (en) | 2012-04-16 | 2014-09-09 | Aesculap Implant Systems, Llc | Rod to rod cross connector |
US11213400B2 (en) | 2012-05-07 | 2022-01-04 | Encore Medical, L.P. | Elbow prosthesis |
KR20130127786A (en) * | 2012-05-15 | 2013-11-25 | (주)메디쎄이 | Pedicle screw locking system |
US9198767B2 (en) | 2012-08-28 | 2015-12-01 | Samy Abdou | Devices and methods for spinal stabilization and instrumentation |
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 |
US10058354B2 (en) | 2013-01-28 | 2018-08-28 | Roger P. Jackson | Pivotal bone anchor assembly with frictional shank head seating surfaces |
US8852239B2 (en) | 2013-02-15 | 2014-10-07 | Roger P Jackson | Sagittal angle screw with integral shank and receiver |
US9039779B2 (en) | 2013-03-13 | 2015-05-26 | Biomet Manufacturing, Llc | Adjustable lateral articulating condyle |
US9179941B2 (en) * | 2013-03-14 | 2015-11-10 | Blackstone Medical, Inc. | Surgical cross connector |
US20150073488A1 (en) * | 2013-09-09 | 2015-03-12 | James A. Rinner | Spinal stabilization system |
US9427276B2 (en) | 2013-09-17 | 2016-08-30 | Gary D Fleischer | Method of changing position of bones |
US9468471B2 (en) | 2013-09-17 | 2016-10-18 | K2M, Inc. | Transverse coupler adjuster spinal correction systems and methods |
US9517089B1 (en) | 2013-10-08 | 2016-12-13 | Nuvasive, Inc. | Bone anchor with offset rod connector |
US9566092B2 (en) | 2013-10-29 | 2017-02-14 | Roger P. Jackson | Cervical bone anchor with collet retainer and outer locking sleeve |
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 |
US10064658B2 (en) | 2014-06-04 | 2018-09-04 | Roger P. Jackson | Polyaxial bone anchor with insert guides |
US9597119B2 (en) | 2014-06-04 | 2017-03-21 | Roger P. Jackson | Polyaxial bone anchor with polymer sleeve |
WO2016070191A1 (en) | 2014-11-01 | 2016-05-06 | Numagenesis, Llc (State Of North Carolina) | Compression fixation system |
CN104434290B (en) * | 2014-12-06 | 2016-08-17 | 昆明医科大学第二附属医院 | A kind of low incisura pedicle screw using flexible connection mode |
US10857003B1 (en) | 2015-10-14 | 2020-12-08 | Samy Abdou | Devices and methods for vertebral stabilization |
CN105250017B (en) * | 2015-11-30 | 2018-03-06 | 昆明医科大学第二附属医院 | A kind of orthopedic rod connector that multidirectional offer angle compensation is provided |
US10744000B1 (en) | 2016-10-25 | 2020-08-18 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10973648B1 (en) | 2016-10-25 | 2021-04-13 | Samy Abdou | Devices and methods for vertebral bone realignment |
US11478289B2 (en) | 2018-05-04 | 2022-10-25 | Numagenesis, Llc | Compression fixation system |
US11179248B2 (en) | 2018-10-02 | 2021-11-23 | Samy Abdou | Devices and methods for spinal implantation |
CN110141342A (en) * | 2019-06-08 | 2019-08-20 | 何静 | A kind of anti-explosion filaments rigidly fix formula pedicle nail |
CN112971950B (en) * | 2021-02-04 | 2022-05-20 | 山东威高骨科材料股份有限公司 | Connector assembly and surgical device |
US11877775B1 (en) * | 2022-11-21 | 2024-01-23 | Warsaw Orthopedic, Inc. | Multiaxial receivers with tether |
Family Cites Families (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4569338A (en) * | 1984-02-09 | 1986-02-11 | Edwards Charles C | Sacral fixation device |
SE458417B (en) * | 1985-08-15 | 1989-04-03 | Sven Olerud | FIXING INSTRUMENTS PROVIDED FOR USE IN SPINE OPERATIONS |
CH683963A5 (en) * | 1988-06-10 | 1994-06-30 | Synthes Ag | Internal fixation. |
CA2035348C (en) * | 1990-02-08 | 2000-05-16 | Jean-Louis Vignaud | Adjustable fastening device with spinal osteosynthesis rods |
SE9002569D0 (en) * | 1990-08-03 | 1990-08-03 | Sven Olerud | SPINAL KNUT |
US5254118A (en) * | 1991-12-04 | 1993-10-19 | Srdjian Mirkovic | Three dimensional spine fixation system |
US5261909A (en) * | 1992-02-18 | 1993-11-16 | Danek Medical, Inc. | Variable angle screw for spinal implant system |
US5810817A (en) * | 1992-06-19 | 1998-09-22 | Roussouly; Pierre | Spinal therapy apparatus |
US5527314A (en) * | 1993-01-04 | 1996-06-18 | Danek Medical, Inc. | Spinal fixation system |
US5423818A (en) * | 1993-02-17 | 1995-06-13 | Danek Medical, Inc. | Clamp for attaching a vertebral fixation element to a spinal rod |
US5643259A (en) * | 1994-03-31 | 1997-07-01 | Ricardo C. Sasso | Spine fixation instrumentation |
FR2731344B1 (en) * | 1995-03-06 | 1997-08-22 | Dimso Sa | SPINAL INSTRUMENTATION ESPECIALLY FOR A ROD |
US5688272A (en) * | 1995-03-30 | 1997-11-18 | Danek Medical, Inc. | Top-tightening transverse connector for a spinal fixation system |
US5643263A (en) * | 1995-08-14 | 1997-07-01 | Simonson; Peter Melott | Spinal implant connection assembly |
US5643264A (en) * | 1995-09-13 | 1997-07-01 | Danek Medical, Inc. | Iliac screw |
US5645544A (en) * | 1995-09-13 | 1997-07-08 | Danek Medical, Inc. | Variable angle extension rod |
US5947967A (en) * | 1997-10-22 | 1999-09-07 | Sdgt Holdings, Inc. | Variable angle connector |
US5976135A (en) * | 1997-12-18 | 1999-11-02 | Sdgi Holdings, Inc. | Lateral connector assembly |
US6565569B1 (en) * | 1998-04-29 | 2003-05-20 | Stryker Spine | Backbone osteosynthesis system with clamping means, in particlular for anterior fixing |
US6183473B1 (en) * | 1999-04-21 | 2001-02-06 | Richard B Ashman | Variable angle connection assembly for a spinal implant system |
US6471703B1 (en) * | 1999-04-21 | 2002-10-29 | Sdgi Holdings, Inc. | Variable angle connection assembly for a spinal implant system |
US6210413B1 (en) * | 1999-04-23 | 2001-04-03 | Sdgi Holdings, Inc. | Connecting apparatus using shape-memory technology |
US6562038B1 (en) * | 2000-03-15 | 2003-05-13 | Sdgi Holdings, Inc. | Spinal implant connection assembly |
US6572618B1 (en) * | 2000-03-15 | 2003-06-03 | Sdgi Holdings, Inc. | Spinal implant connection assembly |
US6248107B1 (en) * | 2000-03-15 | 2001-06-19 | Sdgi Holdings, Inc. | System for reducing the displacement of a vertebra |
US6685705B1 (en) * | 2000-10-23 | 2004-02-03 | Sdgi Holdings, Inc. | Six-axis and seven-axis adjustable connector |
US6626906B1 (en) * | 2000-10-23 | 2003-09-30 | Sdgi Holdings, Inc. | Multi-planar adjustable connector |
US6520962B1 (en) * | 2000-10-23 | 2003-02-18 | Sdgi Holdings, Inc. | Taper-locked adjustable connector |
US6454768B1 (en) * | 2000-12-05 | 2002-09-24 | Roger P. Jackson | Removable gripping set screw |
GB2375051B (en) * | 2001-05-02 | 2005-04-06 | Biomet Merck Ltd | Swivel coupling |
US6579292B2 (en) * | 2001-06-18 | 2003-06-17 | Sdgi Holdings, Inc. | Connection assembly for spinal implant systems |
-
2003
- 2003-06-11 US US10/459,628 patent/US7270665B2/en active Active
-
2004
- 2004-06-09 WO PCT/US2004/018282 patent/WO2004110289A1/en active Application Filing
- 2004-06-09 CA CA002528515A patent/CA2528515A1/en not_active Abandoned
- 2004-06-09 CN CNB2004800162091A patent/CN100462058C/en not_active Expired - Fee Related
- 2004-06-09 DE DE602004014613T patent/DE602004014613D1/en not_active Expired - Fee Related
- 2004-06-09 ES ES04754781T patent/ES2308210T3/en active Active
- 2004-06-09 AT AT04754781T patent/ATE398972T1/en not_active IP Right Cessation
- 2004-06-09 AU AU2004247116A patent/AU2004247116B2/en not_active Ceased
- 2004-06-09 EP EP04754781A patent/EP1635722B1/en not_active Not-in-force
- 2004-06-09 JP JP2006533639A patent/JP2007500581A/en active Pending
- 2004-06-09 KR KR1020057023770A patent/KR101094547B1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
AU2004247116B2 (en) | 2009-10-29 |
KR20060012325A (en) | 2006-02-07 |
AU2004247116A1 (en) | 2004-12-23 |
ATE398972T1 (en) | 2008-07-15 |
WO2004110289A1 (en) | 2004-12-23 |
JP2007500581A (en) | 2007-01-18 |
US7270665B2 (en) | 2007-09-18 |
DE602004014613D1 (en) | 2008-08-07 |
ES2308210T3 (en) | 2008-12-01 |
KR101094547B1 (en) | 2011-12-19 |
US20040254574A1 (en) | 2004-12-16 |
CN1832705A (en) | 2006-09-13 |
EP1635722A1 (en) | 2006-03-22 |
EP1635722B1 (en) | 2008-06-25 |
CN100462058C (en) | 2009-02-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7270665B2 (en) | Variable offset spinal fixation system | |
EP1954206B1 (en) | Dorsal adjusting multi-rod connector | |
EP1023873B1 (en) | Spinal fixation system | |
CA2403057C (en) | Multi-axial bone anchor system | |
JP4390709B2 (en) | Variable angle adaptive plate | |
CA2460183C (en) | Connection rod for screw or hook polyaxial system and method of use | |
US7655025B2 (en) | Adjustable rod and connector device and method of use | |
US7763057B2 (en) | Biased angle polyaxial pedicle screw assembly | |
US7608096B2 (en) | Posterior pedicle screw and plate system and methods | |
US20060200128A1 (en) | Bone anchor | |
US7909855B2 (en) | Orthopedic implant assembly | |
US20070123879A1 (en) | Bone plate system | |
JP2009512466A (en) | Multi-axis screw | |
WO2008048923A2 (en) | Central rod connector and t-rod | |
US20160302833A9 (en) | Low profile spinal fixation system | |
KR20080084997A (en) | Side-loading adjustable bone anchor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FZDE | Discontinued |