Source: https://patents.google.com/patent/US8623087B2/en
Timestamp: 2019-10-18 02:54:29
Document Index: 9575674

Matched Legal Cases: ['§371', 'arts 3', 'arts 3', 'art 5', 'art 6', 'arts 5', 'arts 3', 'arts 5', 'art 5', 'art 4', 'art 4', 'arts 5']

US8623087B2 - Intersomatic cage with unified grafts - Google Patents
Intersomatic cage with unified grafts Download PDF
US8623087B2
US8623087B2 US11/767,386 US76738607A US8623087B2 US 8623087 B2 US8623087 B2 US 8623087B2 US 76738607 A US76738607 A US 76738607A US 8623087 B2 US8623087 B2 US 8623087B2
US11/767,386
US20080021562A1 (en
2000-05-18 Priority to FR0006351 priority Critical
2000-05-18 Priority to FR0006351A priority patent/FR2808995B1/en
2001-05-18 Priority to US10/276,712 priority patent/US7291170B2/en
2001-05-18 Priority to PCT/FR2001/001545 priority patent/WO2001087194A1/en
2007-06-22 Priority to US11/767,386 priority patent/US8623087B2/en
2007-06-22 Application filed by LDR Medical filed Critical LDR Medical
2008-01-24 Publication of US20080021562A1 publication Critical patent/US20080021562A1/en
2008-06-26 Assigned to LDR MEDICAL reassignment LDR MEDICAL ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUPPERT, JEAN
2014-01-07 Publication of US8623087B2 publication Critical patent/US8623087B2/en
The present application is a continuation of U.S. patent application Ser. No. 10/276,712, filed Mar. 26, 2003, now U.S. Pat. No. 7,291,170 B2 issued Nov. 6, 2007, which is a 35 U.S.C. §371 application of PCT/FR01/01545 filed May 18, 2001, which claims pr to FR 00/06351 filed May 18, 2000. All of the foregoing are hereby incorporated by reference.
According to the invention, the intervertebral cage is composed of a thin main wall prolongd by two return parts, the thin main wall having an approximately constant thickness and each return part being extended by an end part, the end parts facing each other with a gap between them, the wall, the return parts and the end part delimiting an inner cavity, the extension of the clear gap parallel to the straight wall being between 50% and 100% of the largest dimension of the cavity parallel to the wall, and preferably between 70% and 90%.
Thus, according to the invention, the intervertebral cage comprises only three walls, namely the straight main wall and the two return parts prolonged by the end parts, such that the graft was compacted on the inside of each cage before the cage was placed (in the case of posterior placement in which two cages are used arranged side by side and at a spacing from each other), and the graft that is made to grow between the two cages are all three in mutual contact, such that there is actually only a single graft which will therefore grow homogeneously to obtain an optimum contact between the vertebral plate—graft—vertebral plate, in other words a good homogeneous and stable contact, also making the cage more resistant even though it only has one straight main wall and a large gap between the end parts.
According to one advantageous embodiment, the end part that projects from the largest return part is provided with at least one hole, and preferably two holes on the front face facing the other end part, and the other return part comprises a threaded hole on its part external to the cage, these holes being designed to cooperate with pins associated with placement instrumentation for placement of the implant or the intervertebral cage in the intervertebral space.
FIG. 2 is a longitudinal sectional view from the top of the intervertebral cage of FIG. 1;
FIG. 3 is a side view of the intervertebral cage in FIG 1;
FIG. 7 is a perspective view of the intervertebral cage of FIG. 1 showing an attachment structure; and
FIG. 1 shows in intervertebral cage 1 according to the invention. The intervertebral cage comprises a main wall 2 from which two return parts 3 and 4 project. The two return parts 3 and 4 are prolonged by a first end part 5 and a second end part 6 respectively. The two end parts 5 and 6 are approximately parallel to the main wall 2. The wall 2, the return parts 3 and 4 and the end parts 5, 6 delimit an inner cavity 30 in the cage, by prolonging the two end parts towards each other.
The upper edge 9 and the lower edge 10 of the cage forming the intervertebral cage have a toothed shape 11. These teeth or notches give good anchorage of the cage in the vertebral plates.
Two holes 12 are formed in face 8, facing the end part 5. A tapped hole 13 is formed in the outside edge of the return part 4. These holes 12 and 13 are designed to cooperate, respectively, with the pins 20 and the threaded end 21 of the rod 15 of an instrument 14 for the placement of an intervertebral cage between the two vertebrae, particularly by posterior placement. In particular, this instrumentation 14 is shown in FIGS. 4 to 6.
On its edge opposite the rod 15, the plate or wall 19 comprises two pins 20 designed to cooperate with holes formed in the face 8 of the intervertebral cage 1. The instrumentation 14 also comprises a threaded end 21 (FIG. 6) of the rod 15 that will cooperate with the tapped hole 13 (FIG. 7) formed in the outside part of the return part 4 of the intervertebral cage. This threaded end 21 extends inside the rod 15 and opens up at the end of 16 of this rod 15, at the surface 18 through a hole formed in it. The user screws and unscrews the threaded rod using the maneuvering handle 22. Screwing the rod in firstly blocks the rod and the cage in rotation, and secondly fixes the rod to the cage.
The length of the plate 29 is approximately equivalent to the length of the main wall 2 of the intervertebral case, such that when the threaded end 21 is screwed into the tapped hole 13, pins 20 (FIG. 7) penetrate into the holes 12. It is thus possible to insert the intervertebral cage between two vertebrae and then to remove the instrumentation. The two sides 7 and 8 facing the end parts 5 and 6 are offset from each other by a dimension corresponding to the thickness of the plate 19.
an upper surface configured for contact with the upper vertebra, the upper surface comprising teeth arranged in a substantially planar array and at least portions of the main wall, the first return part, the second return part, the first end part, and the second end part;
a lower surface configured for contact with the lower vertebra, the lower surface comprising teeth arranged in a substantially planar array and at least portions of the main wall, the first return part, the second return part, the first end part, and the second end part; and
a cavity delimited by the main wall, the first return part, the second return part, the first end part, and the second end part, the cavity open along the upper surface and the lower surface, with the intervertebral cage having an opening to the cavity along a gap;
the gap formed between the first end face and the second end face and having a width that corresponds to between 100% and about 50% of the largest dimension of the cavity parallel to the main wall, which width extends fully along the opening between the first end face and the second end face, with the gap open at the upper surface and the lower surface and extending therebetween so that the first end part and the second end part are connected only through the first return part, the second return part, and the main wall; and
a coupler for a placement instrument disposed in the first or second return part or the first or second end part and adapted to place the cage between the upper and lower vertebrae.
3. The intervertebral cage of claim 2 in which the main wall has a thickness defined by the distance between an exterior wall extending from the upper surface to the lower surface and an interior wall extending from the upper surface to the lower surface, the thickness being substantially constant between the upper surface and the lower surfaces.
6. The intervertebral cage of claim 1 wherein the gap extends substantially parallel to the main wall.
10. A combination comprising the intervertebral cage of claim 1 and further comprising a placement instrument for inserting the cage between the upper and lower vertebrae, the coupler of the intervertebral cage further comprising an attachment for a rod of the instrument, and the instrument comprising a rod attachable to the coupler and an instrument wall adapted to extend at least partially into the gap and to close the gap between the first and second end faces.
13. The intervertebral cage and instrument of claim 10 wherein the coupler includes a hole disposed in the cage adapted to receive a portion of the rod.
14. The intervertebral cage and instrument of claim 13 further comprising a blocking structure integral with the coupler, wherein the hole disposed in the cage is tapped and the portion of the rod received in the hole is threaded.
15. An intervertebral cage configured for insertion between an upper vertebra and a lower vertebra, comprising:
a substantially straight main wall comprising a top adapted for contact with the upper vertebra and a bottom adapted for contact with the lower vertebra, and having first and second ends each extending from the top to the bottom of the main wall;
a first return part extending away from the first end of the main wall, the first return part having a top adapted for contact with the upper vertebra, a bottom adapted for contact with the lower vertebra, and a first end part having a top adapted for contact with the upper vertebra and a bottom adapted for contact with the lower vertebra;
a second return part extending away from the second end of the main wall, the second return part having a top adapted for contact with the upper vertebra, a bottom adapted for contact with the lower vertebra, and a second end part having a top adapted for contact with the upper vertebra and a bottom adapted for contact with the lower vertebra, the first end part extending from the first return part toward the second end part and the second end part extending from the second return part toward the first end part so that the first and second end parts face each other to form a gap therebetween;
a cavity defined by the main wall, the first and second return parts and the first and second end parts that opens from the cage at the gap, the gap extending substantially parallel to the main wall a distance that is between 100% and about 50% of a largest dimension of the cavity parallel to the wall; and
a coupler for a placement instrument disposed in the first or second return part or the first or second end part and adapted to place the cage between the upper and lower vertebrae;
with the main wall having a thickness defined by the distance between an exterior surface extending from the top to the bottom of the main wall and an interior surface extending from the top to the bottom of the main wall, the thickness being substantially constant between the top and the bottom of the main wall.
16. An intervertebral cage configured for insertion in a space between an upper vertebra and a lower vertebra, the intervertebral space having a medial horizontal plane, the cage comprising:
a substantially straight main wall having two ends;
first and second return parts each projecting from one of the two main wall ends;
a first end part extending toward the second return part from an end of the first return part distal from the main wall;
a second end part extending toward the first return part from an end of the second return part distal from the main wall;
a gap between the first and second end parts;
an inner cavity defined by the main wall, the first and second return parts, the first and second end parts, and the gap, with the gap extending substantially parallel to the main wall along a distance between 100% and about 50% of the largest dimension of the inner cavity parallel to the main wall;
a top surface comprising notches arranged in a substantially planar array and adapted to confront the upper vertebra;
a bottom surface comprising notches arranged in a substantially planar array and adapted to confront the lower vertebra;
a cross-sectional shape along the top and the bottom surfaces of the cage that approximates the shape of a letter “C” having a substantially straight back; and
17. The intervertebral cage of claim 16 in which the cage has a lateral width and at least one of the notches of the top and bottom surfaces extends across the lateral width.
18. An intervertebral cage combination comprising a first intervertebral cage according to claim 16 and a second intervertebral cage according to claim 16, wherein the first intervertebral cage and the second intervertebral cage are configured with mirror-image symmetry and adapted for disposition with the gap of the first intervertebral cage facing the gap of the second intervertebral cage.
19. The intervertebral cage of claim 16, further comprising
a first wall surface extending along a first side of the substantially straight main wall, a first side of the first return part, and a first side of the second return part and
a second wall surface extending along a second side of the substantially straight main wall, a second side of the first return part, and a second side of the second return part;
with the top surface and the bottom surface each extending contiguously from the first wall surface to the second wall surface.
US11/767,386 2000-05-18 2007-06-22 Intersomatic cage with unified grafts Active 2024-08-12 US8623087B2 (en)
FR0006351 2000-05-18
US10/276,712 US7291170B2 (en) 2000-05-18 2001-05-18 Intersomatic cage with unified grafts
US11/767,386 US8623087B2 (en) 2000-05-18 2007-06-22 Intersomatic cage with unified grafts
US14/149,357 US9532882B2 (en) 2000-05-18 2014-01-07 Intersomatic cage with unified grafts
US10276712 Continuation
US10276712 Continuation 2001-05-18
PCT/FR2001/001545 Continuation WO2001087194A1 (en) 2000-05-18 2001-05-18 Intersomatic cage with unified grafts
US10/276,712 Continuation US7291170B2 (en) 2000-05-18 2001-05-18 Intersomatic cage with unified grafts
US14/149,357 Continuation US9532882B2 (en) 2000-05-18 2014-01-07 Intersomatic cage with unified grafts
US20080021562A1 US20080021562A1 (en) 2008-01-24
US8623087B2 true US8623087B2 (en) 2014-01-07
US10/276,712 Active US7291170B2 (en) 2000-05-18 2001-05-18 Intersomatic cage with unified grafts
US11/767,386 Active 2024-08-12 US8623087B2 (en) 2000-05-18 2007-06-22 Intersomatic cage with unified grafts
US14/149,357 Active 2021-07-13 US9532882B2 (en) 2000-05-18 2014-01-07 Intersomatic cage with unified grafts
AT (1) AT365519T (en)
AU (1) AU6246801A (en)
DE (1) DE60129129T2 (en)
PT (1) PT1284689E (en)
2000-05-18 FR FR0006351A patent/FR2808995B1/en not_active Expired - Fee Related
2001-05-18 DE DE60129129T patent/DE60129129T2/en active Active
2001-05-18 US US10/276,712 patent/US7291170B2/en active Active
2001-05-18 ES ES01936592T patent/ES2288956T3/en active Active
2001-05-18 KR KR1020027015414A patent/KR100865367B1/en active IP Right Grant
2001-05-18 AU AU6246801A patent/AU6246801A/en active Pending
2001-05-18 WO PCT/FR2001/001545 patent/WO2001087194A1/en active IP Right Grant
2001-05-18 PT PT01936592T patent/PT1284689E/en unknown
2001-05-18 AT AT01936592T patent/AT365519T/en unknown
2001-05-18 JP JP2001583665A patent/JP4938955B2/en active Active
2001-05-18 EP EP01936592A patent/EP1284689B1/en active Active
2007-06-22 US US11/767,386 patent/US8623087B2/en active Active
2014-01-07 US US14/149,357 patent/US9532882B2/en active Active
Mc+Le choix de l'ancrage, Website: http://www.ldrmedical.fr/mcplus.htm, Sep. 19, 2004.
EP1284689B1 (en) 2007-06-27
PT1284689E (en) 2007-10-10
DE60129129D1 (en) 2007-08-09
US20080021562A1 (en) 2008-01-24
EP1284689A1 (en) 2003-02-26
JP4938955B2 (en) 2012-05-23
WO2001087194A1 (en) 2001-11-22
JP2004500922A (en) 2004-01-15
US20140121778A1 (en) 2014-05-01
FR2808995A1 (en) 2001-11-23
ES2288956T3 (en) 2008-02-01
US7291170B2 (en) 2007-11-06
US20030195626A1 (en) 2003-10-16
FR2808995B1 (en) 2003-02-21
KR100865367B1 (en) 2008-10-24
AT365519T (en) 2007-07-15
AU6246801A (en) 2001-11-26
KR20030017973A (en) 2003-03-04
US9532882B2 (en) 2017-01-03
DE60129129T2 (en) 2008-03-06
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUPPERT, JEAN;REEL/FRAME:021153/0865