CA2445387A1 - Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure - Google Patents
Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure Download PDFInfo
- Publication number
- CA2445387A1 CA2445387A1 CA002445387A CA2445387A CA2445387A1 CA 2445387 A1 CA2445387 A1 CA 2445387A1 CA 002445387 A CA002445387 A CA 002445387A CA 2445387 A CA2445387 A CA 2445387A CA 2445387 A1 CA2445387 A1 CA 2445387A1
- Authority
- CA
- Canada
- Prior art keywords
- implant
- curved
- faces
- posterior
- anterior
- 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.)
- Granted
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
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- A61F2/4465—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 kidney shaped cross-section substantially perpendicular to the axis of the spine
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- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0015—Kidney-shaped, e.g. bean-shaped
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/0006—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting angular orientation
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00017—Iron- or Fe-based alloys, e.g. stainless steel
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00359—Bone or bony tissue
Abstract
An intervertebral implant for fusing vertebrae is disclosed. The implant has a body with curved, substantially parallel posterior and anterior faces separated by two narrow implant ends, superior and inferior faces having a plurality of undulating surfaces for contacting upper and lower vertebral endplates, and at least one depression at a first end for engagement by an insertion tool. The arcuate implant configuration facilitates insertion of the implant from a transforaminal approach into a symmetric position about the midline of the spine so that a single implant provides balanced support to the spinal column. The implant may be formed of a plurality of interconnecting bodies assembled to form a single unit. An implantation kit and method are also disclosed.
Claims (27)
1. An intervertebral implant comprising:
a body having a curved, concave posterior face and a curved, convex anterior face, both curved posterior and anterior faces extending along a longitudinal axis of the implant body;
a pair of convex narrow ends separating the posterior and anterior faces;
superior and inferior faces for contacting upper and lower vertebral endplates, the superior and inferior surfaces defining a thickness of the implant;
and first and second non-threaded, horizontal channels configured and adapted for engagement by an implant insertion tool, the first channel disposed along at least a portion of the curved posterior face and the second channel disposed along at least a portion of the curved anterior face;
wherein the curved posterior and anterior faces form an arcuate implant configuration that facilitates insertion of the implant via a transforaminal window.
a body having a curved, concave posterior face and a curved, convex anterior face, both curved posterior and anterior faces extending along a longitudinal axis of the implant body;
a pair of convex narrow ends separating the posterior and anterior faces;
superior and inferior faces for contacting upper and lower vertebral endplates, the superior and inferior surfaces defining a thickness of the implant;
and first and second non-threaded, horizontal channels configured and adapted for engagement by an implant insertion tool, the first channel disposed along at least a portion of the curved posterior face and the second channel disposed along at least a portion of the curved anterior face;
wherein the curved posterior and anterior faces form an arcuate implant configuration that facilitates insertion of the implant via a transforaminal window.
2. The implant of claim 1, further comprising a plurality of undulating surfaces on the superior and inferior faces.
3. The implant of claim 1, wherein the first and second non-threaded, horizontal channels are configured and adapted to mate with curved, implant engaging portions of an implant insertion tool.
4. The implant of claim 2, wherein the superior and inferior faces are convex.
5. The implant of claim 4, wherein the thickness of the implant between the superior and inferior faces is greatest at a mid-section between the narrow ends of the implant and the thickness tapers toward the narrow ends.
6. The implant of claim 5, wherein at least one of the narrow ends is rounded.
7. The implant of claim 5, wherein at least one of the narrow ends is substantially straight.
8. The implant of claim 5, wherein the undulating surfaces are teeth.
9. The implant of claim 4, wherein the implant body is substantially solid and formed of allogenic bone.
10. The implant of claim 1, wherein the implant is formed of a plurality of interconnecting bodies assembled to form a single unit.
11. The implant of claim 10, further comprising at least one pin extending through an opening in the plurality of bodies to hold the bodies together as a single unit.
12. The implant of claim 11, wherein the plurality of bodies have mating interlocking surfaces that aid in holding the bodies together as a single unit.
13. A kit for implanting an intervertebral implant into an affected disc space of a patient via a transforaminal window comprising:
an implant having a body with a curved, concave posterior face and a curved, convex anterior face, both curved posterior and anterior faces extending along a longitudinal axis of the implant body, a pair of convex narrow ends separating the posterior and anterior faces, superior and inferior faces having a plurality of undulating, vertebra-engaging surfaces for contacting upper and lower vertebral endplates, and first and second non-threaded, horizontal channels configured and adapted for engagement by an insertion tool, the first channel disposed along at least a portion of the curved posterior face and the second channel disposed along at least a portion of the curved anterior face; and an insertion tool for holding the implant during insertion, wherein the curved posterior and anterior faces form an arcuate implant configuration that facilitates insertion of the implant via the transforaminal window.
an implant having a body with a curved, concave posterior face and a curved, convex anterior face, both curved posterior and anterior faces extending along a longitudinal axis of the implant body, a pair of convex narrow ends separating the posterior and anterior faces, superior and inferior faces having a plurality of undulating, vertebra-engaging surfaces for contacting upper and lower vertebral endplates, and first and second non-threaded, horizontal channels configured and adapted for engagement by an insertion tool, the first channel disposed along at least a portion of the curved posterior face and the second channel disposed along at least a portion of the curved anterior face; and an insertion tool for holding the implant during insertion, wherein the curved posterior and anterior faces form an arcuate implant configuration that facilitates insertion of the implant via the transforaminal window.
14. The kit of claim 13, further comprising an angled impactor for properly positioning the implant within the affected disc space.
15. The kit of claim 13, wherein the insertion tool further comprises angled implant engaging portions that mate with the first and second non-threaded, horizontal channels on the implant to facilitate proper positioning of the implant within the affected disc space.
16. The kit of claim 13, further comprising at least one angled curette for removing disc material from the affected disc space.
17. The kit of claim 13, further comprising at least one trial-fit spacer for estimating the size of the implant to be inserted into the affected disc space.
18. The kit of claim 13, further comprising a guide to assist in positioning the implant behind the data wherein the guide has a curved arm designed and configured to cooperate with the curved anterior face of the implant to facilitate proper positioning of the implant about the midline of the spine behind the data.
19. A method fox implanting an intervertebral implant into an affected disc space of a patient comprising:
creating a transforaminal window from the posterior side of the spine;
inserting bone graft material into the affected disc space;
providing an implant having a substantially solid body with curved, substantially parallel posterior and anterior faces extending along a longitudinal axis of the implant body, a pair of convex narrow ends separating the posterior and anterior faces, superior and inferior faces having a plurality of undulating, vertebra-engaging surfaces for contacting upper and lower vertebral endplates, and first and second non-threaded, horizontal channels configured and adapted for engagement by an insertion tool, the first channel disposed along at least a portion of the curved posterior face and the second channel disposed along at least a portion of the curved anterior face;
inserting the implant into the affected disc space via the transforaminal window with an insertion tool;
guiding the implant around the data through the transforaminal window using the insertion tool.
creating a transforaminal window from the posterior side of the spine;
inserting bone graft material into the affected disc space;
providing an implant having a substantially solid body with curved, substantially parallel posterior and anterior faces extending along a longitudinal axis of the implant body, a pair of convex narrow ends separating the posterior and anterior faces, superior and inferior faces having a plurality of undulating, vertebra-engaging surfaces for contacting upper and lower vertebral endplates, and first and second non-threaded, horizontal channels configured and adapted for engagement by an insertion tool, the first channel disposed along at least a portion of the curved posterior face and the second channel disposed along at least a portion of the curved anterior face;
inserting the implant into the affected disc space via the transforaminal window with an insertion tool;
guiding the implant around the data through the transforaminal window using the insertion tool.
20. The method of claim 19, further comprising positioning the implant symmetrically about the midline of the spine.
21. The method of claim 19, wherein the insertion tool further comprises angled implant engaging portions that mate with the first and second non-threaded, horizontal channels on the implant to facilitate insertion of the implant via the transforaminal window.
22. The method of claim 21, further comprising impacting the implant with an impactor tool to properly position the implant within the affected disc space.
23. The method of claim 22, wherein the impactor tool is angled to facilitate proper positioning of the implant within the affected disc space.
24. The method of claim of 19, further comprising using a curved guide to assist in locating the implant in the affected disc space behind the dara.
25. The method of claim 19, wherein the inserting and guiding steps comprise first inserting one convex narrow end of the implant into the transforaminal window, rotating the implant so that the anterior face of the implant faces anteriorly and moving the implant around the dara.
26. An intervertebral implant for maintaining a desired space between vertebral bodies comprising:
a solid body having a convex anterior face, the anterior face shaped to match the shape of the anterior perimeter of the vertebrae;
a concave posterior face;
arcuate convex end faces connected between the posterior and anterior faces, the posterior and anterior faces being at least double the length of the end faces;
first and second non-threaded, horizontal channels configured and adapted for engagement by an implant insertion tool, the first channel disposed along at least a portion of the concave posterior face and the second channel disposed along at least a portion of the convex anterior face, and the first and second channels extending from one of the end faces toward the other end face; and convex superior and inferior faces for contacting upper and lower vertebral end plates, the superior and inferior faces having vertebra-engaging teeth, wherein the implant is configured and adapted to be inserted into the disc space through a transforaminal window formed in the posterior of the spinal column and positioned behind the dura between vertebral end plates to maintain balanced support about the midline of the spine.
a solid body having a convex anterior face, the anterior face shaped to match the shape of the anterior perimeter of the vertebrae;
a concave posterior face;
arcuate convex end faces connected between the posterior and anterior faces, the posterior and anterior faces being at least double the length of the end faces;
first and second non-threaded, horizontal channels configured and adapted for engagement by an implant insertion tool, the first channel disposed along at least a portion of the concave posterior face and the second channel disposed along at least a portion of the convex anterior face, and the first and second channels extending from one of the end faces toward the other end face; and convex superior and inferior faces for contacting upper and lower vertebral end plates, the superior and inferior faces having vertebra-engaging teeth, wherein the implant is configured and adapted to be inserted into the disc space through a transforaminal window formed in the posterior of the spinal column and positioned behind the dura between vertebral end plates to maintain balanced support about the midline of the spine.
27. The implant of claim 26, wherein the implant body is formed of allogenic bone.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US09/848,178 | 2001-05-03 | ||
US09/848,178 US6719794B2 (en) | 2001-05-03 | 2001-05-03 | Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure |
PCT/US2002/014086 WO2002089712A1 (en) | 2001-05-03 | 2002-05-01 | Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure |
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CA2445387A1 true CA2445387A1 (en) | 2002-11-14 |
CA2445387C CA2445387C (en) | 2010-10-12 |
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CA2445387A Expired - Fee Related CA2445387C (en) | 2001-05-03 | 2002-05-01 | Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure |
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EP (1) | EP1383449B1 (en) |
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NZ (1) | NZ528469A (en) |
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-
2001
- 2001-05-03 US US09/848,178 patent/US6719794B2/en not_active Expired - Lifetime
-
2002
- 2002-05-01 AT AT02736647T patent/ATE448757T1/en not_active IP Right Cessation
- 2002-05-01 ES ES02736647T patent/ES2333778T3/en not_active Expired - Lifetime
- 2002-05-01 EP EP02736647A patent/EP1383449B1/en not_active Expired - Lifetime
- 2002-05-01 CA CA2445387A patent/CA2445387C/en not_active Expired - Fee Related
- 2002-05-01 JP JP2002586853A patent/JP2004532075A/en active Pending
- 2002-05-01 MX MXPA03010045A patent/MXPA03010045A/en unknown
- 2002-05-01 NZ NZ528469A patent/NZ528469A/en unknown
- 2002-05-01 DE DE60234432T patent/DE60234432D1/en not_active Expired - Lifetime
- 2002-05-01 AU AU2002309636A patent/AU2002309636B2/en not_active Ceased
- 2002-05-01 WO PCT/US2002/014086 patent/WO2002089712A1/en active IP Right Grant
- 2002-05-01 BR BR0209428-2A patent/BR0209428A/en active Search and Examination
- 2002-05-02 AR ARP020101618A patent/AR033311A1/en unknown
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2003
- 2003-10-22 ZA ZA200308214A patent/ZA200308214B/en unknown
- 2003-10-31 NO NO20034868A patent/NO20034868L/en unknown
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2004
- 2004-02-26 US US10/788,015 patent/US7226483B2/en not_active Expired - Lifetime
- 2004-02-26 US US10/787,984 patent/US20040172133A1/en not_active Abandoned
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US20040167538A1 (en) | 2004-08-26 |
CA2445387C (en) | 2010-10-12 |
EP1383449A2 (en) | 2004-01-28 |
MXPA03010045A (en) | 2004-05-05 |
ES2333778T3 (en) | 2010-03-01 |
WO2002089712A3 (en) | 2003-01-30 |
JP2004532075A (en) | 2004-10-21 |
NO20034868D0 (en) | 2003-10-31 |
ZA200308214B (en) | 2004-07-07 |
AR033311A1 (en) | 2003-12-10 |
WO2002089712A8 (en) | 2002-12-12 |
AU2002309636B2 (en) | 2005-06-09 |
US7226483B2 (en) | 2007-06-05 |
US6719794B2 (en) | 2004-04-13 |
US20040172133A1 (en) | 2004-09-02 |
NO20034868L (en) | 2004-01-02 |
US20020165612A1 (en) | 2002-11-07 |
DE60234432D1 (en) | 2009-12-31 |
WO2002089712A1 (en) | 2002-11-14 |
NZ528469A (en) | 2005-08-26 |
ATE448757T1 (en) | 2009-12-15 |
EP1383449B1 (en) | 2009-11-18 |
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