US20080294259A1 - Intervertebral prosthesis - Google Patents

Intervertebral prosthesis Download PDF

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Publication number
US20080294259A1
US20080294259A1 US11/982,420 US98242007A US2008294259A1 US 20080294259 A1 US20080294259 A1 US 20080294259A1 US 98242007 A US98242007 A US 98242007A US 2008294259 A1 US2008294259 A1 US 2008294259A1
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US
United States
Prior art keywords
plates
core
prosthesis
upper
lower
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
Application number
US11/982,420
Inventor
Malan de Villiers
Ulrich R. Hahnle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Simplify Medical Pty Ltd
Original Assignee
Simplify Medical Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to ZA2002/7517 priority Critical
Priority to ZA200207517 priority
Priority to PCT/IB2003/001529 priority patent/WO2004026187A1/en
Priority to US11/084,224 priority patent/US7531001B2/en
Application filed by Simplify Medical Inc filed Critical Simplify Medical Inc
Priority to US11/982,420 priority patent/US20080294259A1/en
Publication of US20080294259A1 publication Critical patent/US20080294259A1/en
Assigned to SIMPLIFY MEDICAL, INC. reassignment SIMPLIFY MEDICAL, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SPINALMOTION, INC.
Assigned to SIMPLIFY MEDICAL PTY LTD reassignment SIMPLIFY MEDICAL PTY LTD ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SIMPLIFY MEDICAL, INC.
Application status is Abandoned legal-status Critical

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    • AHUMAN NECESSITIES
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    • A61F2/4603Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
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    • A61F2002/30362Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
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    • A61F2002/30369Limited lateral translation of the protrusion within a larger recess
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063Three-dimensional shapes
    • A61F2230/0065Three-dimensional shapes toroidal, e.g. ring-shaped, doughnut-shaped
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/0096Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
    • A61F2250/0098Markers 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00017Iron- or Fe-based alloys, e.g. stainless steel
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00011Metals or alloys
    • A61F2310/00029Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005The prosthesis being constructed from a particular material
    • A61F2310/00179Ceramics or ceramic-like structures
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00389The prosthesis being coated or covered with a particular material
    • A61F2310/00592Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
    • A61F2310/00856Coating or prosthesis-covering structure made of compounds based on metal nitrides
    • A61F2310/0088Coating made of titanium nitride

Abstract

An intervertebral prosthesis for insertion between adjacent vertebrae includes upper and lower prosthesis plates locatable against respective vertebrae and having opposing, concavely curved recesses therein, and a core located between the plates. The core has opposed, convexly curved surfaces received in the recesses of the plates to allow the plates to slide in articulated manner over the core. The opposed surfaces of the core and the recesses of the plates have cooperating spherical curvatures. The recess of each plate surrounds a locating peg projecting centrally from the base of the recess and is bounded by an annular rim, such that the annular rims of the plates are arranged to contact one another at a predetermined limit of sliding movement of the plates over the core. The peg locates loosely in an opening located centrally in a curved surface of the core, whereby the plates can slide over the core in all directions while the peg holds the core captive.

Description

    CROSS-REFERENCES TO RELATED APPLICATIONS
  • The present application is a continuation of Ser. No. 11/084,224 (Attorney Docket No. 022031-001710US) filed Mar. 18, 2005, which is a continuation-in-part of PCT/IB2003/001529 (Attorney Docket No. 022031-001700PC) filed on Apr. 24, 2003, designating the United States, which claimed priority from South African application 2002/7517 filed on Sep. 19, 2002, the full disclosures of which are incorporated herein by reference.
  • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • This invention relates to an intervertebral prosthesis.
  • In the event of damage to a spinal disc it is known practice to implant an intervertebral prosthesis surgically to replace the damaged organ. Several types of prosthesis for this purpose are known and in common use.
  • One type of known intervertebral prosthesis is sold by Waldemar Link GmbH & Co under the trade mark LINK® SB Charité. This prosthesis includes upper and lower prosthesis plates which locate against and engage the adjacent vertebral bodies, and a low friction core between the plates. The core has upper and lower convexly curved surfaces and the plates have corresponding, concavely curved recesses which cooperate with the curved surfaces of the core. This allows the plates to slide over the core to allow required spinal movements to take place. The curved recesses in the plates are surrounded by annular ridges which locate, at the limit of sliding movement of the plates over the core, in opposing peripheral channels surrounding the curved surfaces of the core.
  • This type of configuration is also described in EP 0 560 140 and EP 0 560 141 (both Waldemar Link GmbH & Co). However a drawback of such configurations is that the provision of the peripheral ribs and channels limits the areas available for bearing and sliding contact between the plates and core, and accordingly the loads which can be transmitted by the prosthesis. As a result of the relatively small bearing areas, it is believed that at least the core will be subject to rapid wear and have a relatively short life-span.
  • EP 0 560 141 also describes one alternative arrangement in which the curved surfaces of the core carry opposing, elongate keys that locate in elongate grooves in the plates and another alternative arrangement in which the plates have opposing elongate keys that locate in elongate grooves in the opposite curved surfaces of the core. These key and groove arrangements allow the plates to slide freely over the core, within the limits of the length of the grooves, in one plane only. Although allowance is made for some lateral play of the keys in the grooves, very little sliding movement of the plates over the core can take place in the orthogonal vertical plane, and this is considered to be a serious drawback of this design.
  • 2. Description of the Background Art
  • European Patent Publications EP 0 560 140 and EO 0 560 141 have been discussed above. U.S. Patent Publications US2002/0035400 and US2002/0128715 describe intervertebral prostheses with center-posts received in passages in a core. The core possesses an annular flange structure engaged by extensions on the plates.
  • BRIEF SUMMARY OF THE INVENTION
  • According to the invention there is provided an intervertebral prosthesis for insertion between adjacent vertebrae, the prosthesis comprising upper and lower prosthesis plates locatable against the respective vertebrae and having opposing, concavely curved recesses therein and a core located between the plates, the core having opposed, convexly curved surfaces received in the recesses of the plates to allow the plates to slide in articulated manner over the core, characterized in that:
  • the opposed surfaces of the core and the recesses of the plates have cooperating spherical curvatures,
  • the recess of a plate surrounds a locating peg projecting centrally from the base of the recess, and
  • the peg locates loosely in an opening located centrally in a curved surface of the core, whereby the plates can slide over the core in all directions while the peg holds the core captive.
  • In some embodiments, only one of the plates, typically the operatively lower plate, includes a peg. In other embodiments, both plates include pegs, the pegs opposing one another and locating loosely in respective openings located centrally in the opposed curved surfaces of the core. In each embodiment it is preferred that each peg and the opening in which it locates are conical in shape.
  • According to another aspect of the invention there is provided a prosthesis plate for use in a prosthesis as summarized above, the prosthesis plate having a coarse surface locatable against a vertebra, an oppositely facing concavely curved surface which is complemental in shape to a convexly curved surface of a core of the prosthesis, characterized in the concavely curved surface of the plate has a spherical curvature and in that the plate includes a conical locating peg extending centrally from the concavely curved surface, the peg being locatable loosely in a central opening in the convexly curved surface of the core.
  • According to yet another aspect of the invention there is provided a core for use in the prosthesis, the core comprising a one piece plastics body having operatively upper and lower curved surfaces, characterized in that the curved surfaces of the body are spherically curved and at least one of the surfaces has a central, conical opening therein dimensioned to receive a conical locating peg of a prosthesis plate loosely.
  • Other features of the invention are set forth in the appended claims.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • The invention will now be described in more detail, by way of example only, with reference to the accompanying drawings in which:
  • FIG. 1 shows a cross-sectional view of a prosthesis plate used in a prosthesis according to the invention;
  • FIG. 2 shows a plan view of the prosthesis plate seen in FIG. 1;
  • FIG. 3 shows a cross-sectional view of a core used in a prosthesis according to the invention;
  • FIG. 4 shows a plan view of the core seen in FIG. 3;
  • FIG. 5 shows a cross-sectional view of an intervertebral prosthesis according to a first embodiment of the invention in a neutral condition before articulation has taken place;
  • FIG. 6 shows the prosthesis of FIG. 5 articulated to a limit position; and
  • FIG. 7 shows a cross-sectional view of an intervertebral prosthesis according to a second embodiment of the invention.
  • DETAILED DESCRIPTION OF THE INVENTION
  • The prosthesis plate 10 seen in FIGS. 1 and 2 may be formed from titanium, typically being formed in one piece of grade 5 titanium. Other suitable materials include titanium nitrides, cobalt chrome alloys, and ceramics. The prosthesis plate includes a major surface 12 which is machined to a coarse, serrated finish 14. Projecting from the surface 12 is an elongate fin 16 pierced by transverse holes 18. The opposite surface of the plate 10 is formed with a recess 20 surrounding a projecting conical peg 22 of round cross-section at the centre of the recess. The recess is bounded by an annular rim 24. The surface 26 of the recess is concavely, spherically curved and has a titanium nitride finish.
  • A first embodiment of prosthesis of the invention, indicated generally. by the numeral 28 in FIGS. 5 and 6, includes a pair of identical prosthesis plates 10 arranged in opposition to one another. The prosthesis 28 also includes a core 30 illustrated in FIGS. 3 and 4. The core is made in one piece of a low friction plastics material, in this case a polyethylene known as Orthosol, but a variety of other high molecular weight polyethylenes might also find use. Alternatively, the core could be composed of a metal, such as cobalt chrome, or of a ceramic. The core is generally in the form of a circular, doughnut-shaped toroid and has identical upper and lower surfaces 32 which are convexly, spherically curved. The upper and lower surfaces 32 are formed centrally with conical openings 34, in this case forming the opposite ends of a circular cross-section passage 36 passing axially and centrally through the body of the core.
  • The core surfaces 32 and recess surface 26 have the same radius of curvature which is, in this case, 18 mm.
  • In the assembled prosthesis 28, the plates 10 are arranged in opposition to one another with the core 30 located between them. The pegs 22 of the plates locate in the openings 34, i.e. in the ends of the passage 36. The combined length of the pegs is less than the length of the passage 36, so the inner ends of the pegs are spaced apart from one another by a short distance 38, as shown in FIG. 5. The transverse dimension of each peg is, at all points along the length of the peg, considerably less than the diameter of the passage 36 at the corresponding point along the length of the passage.
  • The cooperating spherical surfaces 26 and 32 and the relative dimensions of the pegs 22 and the passage 36 allow the plates 10 to slide or articulate over the core through a fairly large range of angles and in all directions or degrees of freedom, including rotation about the central axis.
  • At a predetermined limit of articulated movement of the plates relative to the core, the rims 24 of the plates contact with one another as indicated by the numeral 40 in FIG. 6. Further articulation of the prosthesis 28 beyond this point is not possible. At the limit of articulation, the pegs 22 also come into abutment with the side of the passage 36, as also illustrated in FIG. 6.
  • It will also be noted in FIG. 6 that the openings 34 at the ends of the passage 36 are defined by similar cone angles to the pegs 22, so that contact between the pegs and the sides of the openings takes place complementally over virtually the entire length of each peg.
  • Throughout the range of possible articulation, the pegs 22 remain in the passage 36 and prevent the core from separating laterally from the plates 10. In other words, the core is held captive by the pegs during all possible articulations which can take place. In the illustrated embodiment, the plates 10 are limited to 12° of articulation before the rims 24 abut one another, i.e. 12° is the maximum articulation which can take place.
  • In the prosthesis 28 described above, the pegs 22 locate in a passage 32 which passes right through the core 30. It will however be understood that in other embodiments, the pegs could merely locate in blind recesses or openings in the opposite surfaces of the core without such openings actually being joined to one another to form a continuous passage.
  • FIG. 7 illustrates a prosthesis according to a second embodiment of the invention in a view similar to that of FIG. 5. In FIG. 7, components corresponding to components illustrated in the earlier Figures are indicated by the same reference numerals.
  • The lower prosthesis plate 10 in FIG. 7 is identical to the prosthesis plates of the first embodiment. However, the upper prosthesis plate, designated 10.1, has no central peg. Instead, the surface 26 is continuously, spherically curved. In all other respects the plate 10.1 is identical to the plate 10.
  • In the assembled prosthesis 50, the core is held captive by the action of the single peg 22 carried by the lower prosthesis plate 10. The core 30 is identical to the core described previously but once again it will be appreciated that core could have a blind recess in its downwardly facing, curved surface 32 only to receive the single peg 22.
  • The prosthesis 28, 50 is surgically implanted between adjacent spinal vertebrae in place of a damaged disc. Those skilled in the art will understand that the adjacent vertebrae are forcibly separated from one another to provide the necessary space for insertion. The plates 10, 10.1 are slipped laterally into place between the vertebrae with their fins 16 entering slots cut in the opposing vertebral surfaces to receive them.
  • After insertion of the core between the opposing plates, the vertebra are allowed to move together to hold the assembled prosthesis in place.
  • The surfaces 12 of the plates 10, 10.1 locate against the opposing vertebrae and, with passage of time, firm connection between the plates and the vertebrae will be achieved as bone tissue grows over the serrated finish. Bone tissue growth will also take place about the fins 16 and through the holes 18 therein, further enhancing the connection which is achieved.
  • Referring to FIGS. 3 and 4, the core 30 used in the embodiments described above is formed with narrow, angularly spaced, blind passages which accommodate titanium pins 42. The core itself is transparent to X-radiation and so would normally be invisible in a post-operative X-ray examination. The pins 42 serve as radiographic markers and enable the position of the core 30 to be ascertained during such examination.
  • Annular grooves 44 are provided in the plates 10, 10.1 to facilitate holding and manipulation of the prosthesis by appropriate instruments during placement into the intervertebral disc space.
  • Compared to known prostheses, the prostheses 28, 50 described above have a number of advantages, as follows:
  • 1. The peg or pegs 22 hold the core captive and prevent it from slipping out sideways.
  • 2. At a predetermined maximum limit of articulation, the rims 24 contact one another to prevent further articulation. At the same time, the peg or pegs 22 contact the sides of the openings 34, also preventing further articulation.
  • 3. An acceptable bearing area of the plates on the core is obtained with the central peg/central opening configurations described above. This is particularly advantageous compared to prior art prostheses where the core has peripheral channels on its upper and lower surfaces to receive peripheral rims on the plates at the limit of articulation.
  • In practice, it may happen that there is imperfect alignment of the prosthesis plates. In the case of very poor alignment, the dual peg configuration of FIGS. 5 and 6 gives rise to the possibility that the pegs 22 are laterally offset from one another by a substantial distance. This can in turn lead to the undesirable consequence that the range of articulation which can be accommodated is unduly limited, and attempts to articulate past the limit could result in damage to the core by the misaligned pegs. In the embodiment of FIG. 7 the single peg can be received centrally by the core, thereby avoiding this potential problem.
  • The principles of the invention are applicable to prosthetic disc implants for lumbar vertebrae as well as cervical vertebrae. In the latter case, the fins 16 will typically be omitted.

Claims (8)

1.-17. (canceled)
18. A method for implanting an intervertebral prosthesis between adjacent vertebrae, the method comprising:
providing a prosthesis comprising,
upper and lower prosthesis plates having at least one upstanding elongate fin, at least one of the upper and lower prosthesis plates having a concavely curved, spherical bearing surface therein,
a movable core having at least one convexly curved, spherical surface configured to cooperate with the concavely curved surface of the upper or lower plate, and
a protrusion on at least one of the plates and corresponding opening on the core which hold the core captive and prevent the core from slipping out sideways from between the plates;
placing the upper and lower plates into place between adjacent vertebrae with the at least one fin entering a slot cut in an associated vertebral surface; and
inserting the movable core between the plates, wherein the upper and lower plates are able to both translate and rotate with respect to each other and with respect to the core.
19. A method according to claim 18, wherein a maximum articulation between the upper and lower plates after implantation is 12 degrees.
20. A method according to claim 18, wherein the protrusion and the corresponding opening are located at a center of the movable core and the at least one plate.
21. A method according to claim 18, wherein the at least one upstanding elongate fin includes a plurality of holes formed transversely through the fins.
22. A method according to claim 18, wherein the plates have coarse surfaces adjacent to the fin, the coarse surfaces comprising machined serrated finishes.
23. A method according to claim 18, wherein the plates each have a concavely curved, spherical bearing surfaces therein which are opposed to one another.
24. A method according to claim 18, wherein a radius of curvature of the bearing surface is about 18 mm.
US11/982,420 2002-09-16 2007-10-31 Intervertebral prosthesis Abandoned US20080294259A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ZA2002/7517 2002-09-19
ZA200207517 2002-09-19
PCT/IB2003/001529 WO2004026187A1 (en) 2002-09-19 2003-04-24 Intervertebral prosthesis
US11/084,224 US7531001B2 (en) 2002-09-19 2005-03-18 Intervertebral prosthesis
US11/982,420 US20080294259A1 (en) 2002-09-16 2007-10-31 Intervertebral prosthesis

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US11/982,420 US20080294259A1 (en) 2002-09-16 2007-10-31 Intervertebral prosthesis
US15/284,344 US9839525B2 (en) 2002-09-19 2016-10-03 Intervertebral prosthesis
US15/458,913 US10166113B2 (en) 2002-09-19 2017-03-14 Intervertebral prosthesis
US15/812,209 US20180071112A1 (en) 2002-09-19 2017-11-14 Intervertebral prothesis
US16/108,773 US20180360618A1 (en) 2002-09-19 2018-08-22 Intervertebral prosthesis
US16/189,802 US20190076264A1 (en) 2002-09-19 2018-11-13 Intervertebral prosthesis

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US11/084,224 Continuation US7531001B2 (en) 2002-09-19 2005-03-18 Intervertebral prosthesis

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/284,344 Continuation US9839525B2 (en) 2002-09-16 2016-10-03 Intervertebral prosthesis

Publications (1)

Publication Number Publication Date
US20080294259A1 true US20080294259A1 (en) 2008-11-27

Family

ID=32031274

Family Applications (12)

Application Number Title Priority Date Filing Date
US11/084,224 Active - Reinstated US7531001B2 (en) 2002-09-19 2005-03-18 Intervertebral prosthesis
US11/468,618 Active 2023-06-07 US7731754B2 (en) 2002-09-19 2006-08-30 Intervertebral prosthesis
US11/468,601 Abandoned US20060293754A1 (en) 2002-09-19 2006-08-30 Intervertebral Prosthesis
US11/982,431 Abandoned US20080228277A1 (en) 2002-09-19 2007-10-31 Intervertebral prosthesis
US11/982,420 Abandoned US20080294259A1 (en) 2002-09-16 2007-10-31 Intervertebral prosthesis
US12/129,868 Active 2023-10-12 US8262732B2 (en) 2002-09-19 2008-05-30 Intervertebral prosthesis
US12/731,993 Abandoned US20100179419A1 (en) 2002-09-19 2010-03-25 Intervertebral Prosthesis
US15/284,344 Active US9839525B2 (en) 2002-09-16 2016-10-03 Intervertebral prosthesis
US15/458,913 Active US10166113B2 (en) 2002-09-16 2017-03-14 Intervertebral prosthesis
US15/812,209 Pending US20180071112A1 (en) 2002-09-16 2017-11-14 Intervertebral prothesis
US16/108,773 Pending US20180360618A1 (en) 2002-09-16 2018-08-22 Intervertebral prosthesis
US16/189,802 Pending US20190076264A1 (en) 2002-09-16 2018-11-13 Intervertebral prosthesis

Family Applications Before (4)

Application Number Title Priority Date Filing Date
US11/084,224 Active - Reinstated US7531001B2 (en) 2002-09-19 2005-03-18 Intervertebral prosthesis
US11/468,618 Active 2023-06-07 US7731754B2 (en) 2002-09-19 2006-08-30 Intervertebral prosthesis
US11/468,601 Abandoned US20060293754A1 (en) 2002-09-19 2006-08-30 Intervertebral Prosthesis
US11/982,431 Abandoned US20080228277A1 (en) 2002-09-19 2007-10-31 Intervertebral prosthesis

Family Applications After (7)

Application Number Title Priority Date Filing Date
US12/129,868 Active 2023-10-12 US8262732B2 (en) 2002-09-19 2008-05-30 Intervertebral prosthesis
US12/731,993 Abandoned US20100179419A1 (en) 2002-09-19 2010-03-25 Intervertebral Prosthesis
US15/284,344 Active US9839525B2 (en) 2002-09-16 2016-10-03 Intervertebral prosthesis
US15/458,913 Active US10166113B2 (en) 2002-09-16 2017-03-14 Intervertebral prosthesis
US15/812,209 Pending US20180071112A1 (en) 2002-09-16 2017-11-14 Intervertebral prothesis
US16/108,773 Pending US20180360618A1 (en) 2002-09-16 2018-08-22 Intervertebral prosthesis
US16/189,802 Pending US20190076264A1 (en) 2002-09-16 2018-11-13 Intervertebral prosthesis

Country Status (7)

Country Link
US (12) US7531001B2 (en)
EP (2) EP1549260B1 (en)
JP (1) JP4429909B2 (en)
AT (1) AT455518T (en)
AU (1) AU2003226586A1 (en)
DE (1) DE60331089D1 (en)
WO (1) WO2004026187A1 (en)

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US20080228274A1 (en) 2008-09-18
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US20180360618A1 (en) 2018-12-20
US20100179419A1 (en) 2010-07-15

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