WO1999004733A1 - An interbody fusion device having partial circular section cross-sectional segments - Google Patents
An interbody fusion device having partial circular section cross-sectional segments Download PDFInfo
- Publication number
- WO1999004733A1 WO1999004733A1 PCT/US1998/014744 US9814744W WO9904733A1 WO 1999004733 A1 WO1999004733 A1 WO 1999004733A1 US 9814744 W US9814744 W US 9814744W WO 9904733 A1 WO9904733 A1 WO 9904733A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- interbody fusion
- set forth
- fusion implant
- implant device
- tubular body
- Prior art date
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
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
- A61F2/446—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones
-
- 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
- A61F2/28—Bones
- A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The 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
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
- A61F2002/30785—Plurality of holes parallel
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
- A61F2002/30845—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes with cutting edges
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30879—Ribs
-
- 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
- A61F2002/448—Joints for the spine, e.g. vertebrae, spinal discs comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
Definitions
- the upper and lower surfaces include a plurality of stabilization ridges which extend perpendicularly to the overall axis of the device.
- the upper and lower surfaces further include a plurality of through holes disposed between the stabilization ridges.
- a number of the through holes extend from points along the central axis of the flat exterior surface of the device (upper or lower surface) into the central axial bore.
- Other through holes extend from lateral positions on the flat exterior surfaces to holes in the concave exterior surface of the corresponding side wall.
- the side walls of the device are tapered along the axial extent of the device such that the upper and lower surfaces are not parallel, and more particularly, have a convergence angle which permits proper lordosis to be maintained.
- the side walls also include a plurality of through holes (in addition to the ones which communicate directly with the through holes formed at the lateral positions of the upper and lower surfaces, as set forth more fully above) formed therein for direct bone growth communication with the interior of the axial bore.
- through holes in addition to the ones which communicate directly with the through holes formed at the lateral positions of the upper and lower surfaces, as set forth more fully above
- the particular shape of the holes i.e., circular, elliptical, polygonal, etc., is of little consequence with respect to the overall functionality of the implant, provided only that the through holes be large enough to permit bone matrix growth therethrough, and are not so large as to detrimentally weaken the overall structural integrity of the device.
- a second device is then similarly implanted at the opposite laterally offset position.
- the space between the devices i.e., between the opposing concave side walls of the adjacent devices, should be ideally suited for additional allograft material, which is in communication with the exposed bone faces directly and through the lateral through holes of the upper and lower flat faces of the devices.
- Figure 3 is an end view of a one embodiment of the present invention.
- Figure 6 is a side cross-sectional view of the embodiment of the present invention illustrated in Figures 3-5;
- Figure 7 is a side perspective view of an alternative embodiment of the present invention.
- Figure 8 is a side cross-sectional view of the alternative embodiment illustrated in Figure 7;
- the upper and lower flat external surfaces 104,106 each include ridges 114 and 116 which extend outwardly from the surfaces 104,106, respectively, perpendicular to the surfaces and to the overall axis of the body (i.e., the axis of the bore 112).
- the ridges 114,116 it is preferable that the ridges be curvate, as arc sections, rising from the lateral edges 120,122 of the upper or lower surfaces to a maximum height above (or below) the midpoint of the corresponding surface 104,106. It is further desirable that the ridges form blades, which may, most preferably have a serration 124. This serrated blade is ideally suited for cutting through bone, and is therefore ideally suited for positioning of the device as shall be more fully set forth hereinbelow with respect to procedural use. Referring now also to Figures 4 and 5, top and side perspective views of the first embodiment 100 of the present invention is further provided.
- the width of the device is preferably less than its height
- subsequent rotation of the device by 90 degrees about its elongate axis the ridges 114 of the upper and lower flat 104,106 surfaces cut into the exposed faces 210,212 of the adjacent bones, therein securely fixing itself into the space.
- the first device is positioned in the intervertebral space at a laterally offset position.
- a second device is then similarly implanted at the opposite laterally offset position.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU84918/98A AU748364B2 (en) | 1997-07-24 | 1998-07-23 | An interbody fusion device having partial circular section cross-sectional segments |
CA002297674A CA2297674C (en) | 1997-07-24 | 1998-07-23 | An interbody fusion device having partial circular section cross-sectional segments |
KR1020007000777A KR100589752B1 (en) | 1997-07-24 | 1998-07-23 | An interbody fusion device having partial circular section cross-sectional segments |
EP98935734A EP1023010B1 (en) | 1997-07-24 | 1998-07-23 | An interbody fusion device having partial circular section cross-sectional segments |
JP2000503796A JP4176954B2 (en) | 1997-07-24 | 1998-07-23 | Interbody fusion device with partial circle-shaped section, cross-sectional segment |
DE69837998T DE69837998T2 (en) | 1997-07-24 | 1998-07-23 | SWIVELING FUSION DEVICE WITH A PARTICULARLY CIRCULAR SECTION SHAPING CROSS SECTION SEGMENTS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/899,851 | 1997-07-24 | ||
US08/899,851 US5904719A (en) | 1997-07-24 | 1997-07-24 | Interbody fusion device having partial circular section cross-sectional segments |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999004733A1 true WO1999004733A1 (en) | 1999-02-04 |
Family
ID=25411650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/014744 WO1999004733A1 (en) | 1997-07-24 | 1998-07-23 | An interbody fusion device having partial circular section cross-sectional segments |
Country Status (10)
Country | Link |
---|---|
US (1) | US5904719A (en) |
EP (2) | EP1818026A3 (en) |
JP (1) | JP4176954B2 (en) |
KR (1) | KR100589752B1 (en) |
AT (1) | ATE365518T1 (en) |
AU (1) | AU748364B2 (en) |
CA (1) | CA2297674C (en) |
DE (1) | DE69837998T2 (en) |
ES (1) | ES2289789T3 (en) |
WO (1) | WO1999004733A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US6096080A (en) * | 1998-05-06 | 2000-08-01 | Cortek, Inc. | Apparatus for spinal fusion using implanted devices |
WO2008102021A1 (en) * | 2007-02-22 | 2008-08-28 | Vortek Gestora De Patrimonios, S.R.L. | Improvements in a intervertebral disc prothesis |
ES2340832A1 (en) * | 2007-02-22 | 2010-06-09 | Vortek Gestora De Patrimonios, S.R.L. | Improvements in a intervertebral disc prothesis |
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US6206922B1 (en) * | 1995-03-27 | 2001-03-27 | Sdgi Holdings, Inc. | Methods and instruments for interbody fusion |
US6033438A (en) * | 1997-06-03 | 2000-03-07 | Sdgi Holdings, Inc. | Open intervertebral spacer |
US6086595A (en) * | 1997-08-29 | 2000-07-11 | Sulzer Spine-Tech Inc. | Apparatus and method for spinal stabilization |
USRE38614E1 (en) | 1998-01-30 | 2004-10-05 | Synthes (U.S.A.) | Intervertebral allograft spacer |
US6986788B2 (en) * | 1998-01-30 | 2006-01-17 | Synthes (U.S.A.) | Intervertebral allograft spacer |
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Also Published As
Publication number | Publication date |
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ES2289789T3 (en) | 2008-02-01 |
JP4176954B2 (en) | 2008-11-05 |
EP1023010A4 (en) | 2004-12-22 |
KR100589752B1 (en) | 2006-06-15 |
AU748364B2 (en) | 2002-06-06 |
JP2001510708A (en) | 2001-08-07 |
US5904719A (en) | 1999-05-18 |
EP1023010A1 (en) | 2000-08-02 |
DE69837998D1 (en) | 2007-08-09 |
EP1818026A3 (en) | 2008-04-02 |
CA2297674C (en) | 2007-01-09 |
EP1818026A2 (en) | 2007-08-15 |
CA2297674A1 (en) | 1999-02-04 |
DE69837998T2 (en) | 2008-02-28 |
AU8491898A (en) | 1999-02-16 |
EP1023010B1 (en) | 2007-06-27 |
KR20010022205A (en) | 2001-03-15 |
ATE365518T1 (en) | 2007-07-15 |
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