EP1389982A1 - Systeme de protheses de disques intervertebraux - Google Patents

Systeme de protheses de disques intervertebraux

Info

Publication number
EP1389982A1
EP1389982A1 EP02735149A EP02735149A EP1389982A1 EP 1389982 A1 EP1389982 A1 EP 1389982A1 EP 02735149 A EP02735149 A EP 02735149A EP 02735149 A EP02735149 A EP 02735149A EP 1389982 A1 EP1389982 A1 EP 1389982A1
Authority
EP
European Patent Office
Prior art keywords
correction
prostheses
standard
prosthesis
core
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.)
Withdrawn
Application number
EP02735149A
Other languages
German (de)
English (en)
Inventor
Arnold Keller
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.)
Link Spine Group Inc
Original Assignee
Link Spine Group 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
Application filed by Link Spine Group Inc filed Critical Link Spine Group Inc
Priority to EP02735149A priority Critical patent/EP1389982A1/fr
Publication of EP1389982A1 publication Critical patent/EP1389982A1/fr
Withdrawn legal-status Critical Current

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
    • A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • 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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30649—Ball-and-socket joints
    • A61F2002/30662—Ball-and-socket joints with rotation-limiting means
    • 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
    • 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
    • A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
    • A61F2002/443—Intervertebral or spinal discs, e.g. resilient made of articulated components having two transversal endplates and at least one intermediate component
    • 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
    • A61F2310/00179—Ceramics or ceramic-like structures

Definitions

  • prostheses which consist of two cover plates each to be connected to an adjacent vertebral body and a prosthesis core, the prosthesis core interacting with one or both cover plates via spherical, complementary articular surfaces (EP-B 298 233).
  • the cover plates have connection surfaces, by means of which they are connected to the adjacent vertebral bodies. It is desirable that the joint center of the prostheses is arranged in such a way that the movement conditions made possible by the prosthesis are as close as possible to the natural ones and a uniformly distributed force transmission can take place between the vertebral bodies and the prosthesis.
  • the desired spatial relationship to the vertebral bodies is only achieved if the anatomical conditions correspond to the standard conditions required in the construction of the prosthesis.
  • the prosthesis in question or a cover plate of this prosthesis must be used in a manner different from the normal spatial relationship with the vertebral body, which is difficult and risky.
  • the object of the invention is therefore to make the insertion of the prosthesis easier and safer for these cases. This is achieved through the features of claim 1 and preferably the features of the subclaims.
  • a system of intervertebral disc prostheses is required, which includes standard and correction prostheses.
  • the standard prosthesis Sen are the same in every size class. There are usually several size classes; however, this is not absolutely necessary.
  • the prostheses consist of a prosthesis core and at least one cover plate.
  • the prosthesis core interacts with at least one cover plate via articular surfaces.
  • the prosthesis core preferably has two articular surfaces on opposite sides, via which it interacts with complementary articular surfaces of two cover plates. However, it is also possible for one of the cover plates to interact with the prosthesis core via holding surfaces in a non-rigid manner.
  • the cover surfaces have a connection surface for connection to a vertebral body.
  • the correction prostheses have at least one correction cover plate, the core mating surface of which is offset in the ventro-dorsal direction in comparison with the standard prostheses with respect to the connection surface.
  • the prosthesis is offset from the vertebral body on whose side the correction cover plate is inserted, compared to the standard prostheses in the ventro-dorsal direction.
  • the displacement can be ventral or dorsal, depending on the type and direction of installation of the cover plate. If the connection surfaces of the correction cover plates are symmetrical with respect to their medio-lateral center line, they can be used optionally with a center offset to the ventral or dorsal. Since an offset to the dorsal is predominantly an important embodiment of the correction plate according to the invention is characterized in that the Joint center is displaced dorsally, provided that the dorsal side can be seen on the cover plate.
  • the intervertebral disc prosthesis tends to undesired misalignment due to strong spinal curvature or due to high ventro-dorsal forces acting between the affected vertebrae.
  • the cover plates are able to translationally shift a little against each other under lateral relative forces, with the prosthesis core being skewed.
  • the application of the invention is particularly advantageous because the correction plates enable the articulation center of one cover plate to be arranged relatively displaced relative to the articulation center of the other cover plate, thereby compensating for the offset mentioned.
  • the diameter of the articular surfaces is chosen to be as large as possible within the limits of the cover plate
  • the joint surface formed on the cover surface has only a slightly smaller ventro-dorsal extension than the cover plate itself.
  • the offset of the joint surface from the connection surface can only take place on the condition that a smaller diameter is selected for the joint surface. If the radius of curvature of the articular surface is left unchanged, the diameter reduction reduces the depth of the articulated surface provided in the cover plate and thus its ability to transmit lateral forces (parallel to the plane of the cover plate). This may be acceptable in some cases, so this execution the invention is not excluded.
  • the diameter and radius of curvature of the articulation surface of the correction cover plate are selected in accordance with the articulation surfaces which belong to a different, smaller size class.
  • the smaller size class not only is the diameter of the articular surfaces smaller, but also the radius of curvature.
  • the depth of these smaller articular surfaces is therefore greater than the depth of an articular surface of the larger size class in which only the diameter, but not the radius of curvature, has been reduced.
  • the correction cover plate is used together with prosthesis parts that belong to the same size class.
  • prosthesis parts belonging to the lower size class based on the model of which the articular surface of the correction cover plate was chosen, can be used instead.
  • the prosthesis core is expediently a standard prosthesis core in all cases.
  • the second cover plate belonging to the prosthesis is also expediently a standard cover plate.
  • the second cover plate can also be a correction cover plate, which is used, however, rotated by 180 ° with respect to the first, so that the offset amounts of both plates add up.
  • corrective cover plates are used on both sides in the same orientation.
  • the offset arrangement of the core mating surface results in a distance between the mating surface on one side of the core mating surface and the edge of the plate. If this part of the area is not required to provide the largest possible connection area, the plate can be shortened on this side.
  • the connection surface is then as wide in the mediolateral direction as the standard cover plates of the same size class, but their dimension in the ventro-dorsal direction is smaller and can correspond to the smaller size class. This can result in adaptation advantages in cases where the vertebral bodies are wider than normal in the medio-lateral direction and narrower in the ventro-dorsal direction.
  • FIG. 1 a median section through a standard prosthesis of a first size class
  • FIG. 2 shows a view of the inside of a cover plate of a standard prosthesis of the first size class
  • FIG. 3 a median section through a standard prosthesis of a second size class
  • FIG. 4 shows a view of the inside of a cover plate of the standard prosthesis according to FIG. 3,
  • FIG. 5 shows a first embodiment of a correction prosthesis in the median section
  • FIG. 6 is a view of the inside of the associated Correction cover plate
  • FIG. 7 shows a second embodiment of the correction prosthesis in the median section
  • FIG. 8 and 9 median sections through standard prostheses of different size classes of a modified one
  • FIG. 10 and 11 two correction prostheses for the modified embodiment.
  • the standard prostheses according to FIG. 1 to 4 consist of a lower cover plate 1, an upper cover plate 2 and a prosthesis core 3.
  • the cover plates form spherical, concave joint surfaces 4 and the prosthesis core 3 two opposite, identical, convex, spherical joint surfaces 5, which those of the cover plates are complementary. All dimensions of the first size class (FIG. 1 and 2) are larger than those of the second size class (FIG. 3 and 4). In addition to the two size classes shown, there may be other size classes within the system.
  • the components of the prosthesis can consist of materials which have proven themselves for endoprostheses, for example metal, ceramic, polyethylene, the cover plates 1, 2 preferably being made of rigid material (for example metal) and the prosthesis core made of polyethylene.
  • the cover plates 1, 2 have a connection surface 7 which is intended for connection to the end surface of a vertebral body. It can be equipped with means, not shown, for a firm connection to the bone, for example teeth. It is more extensive in the ML direction, which is indicated by line 10 in FIG. 2, than in the VD direction 11. In the standard prostheses, the diameter 12 of the articular surface 4 is chosen to be as large as the dimension of the cover plate in the direction 11 permits.
  • such prostheses are suitable for transmitting the forces running in the direction of the spine and, to a certain extent, also transverse forces from vertebra to vertebra and at the same time allowing pivoting movements. If they are used between vertebrae, between which strong transverse forces act or a strong change in direction takes place, as is often the case, for example, between the last lumbar vertebra and the sacrum, the cover plates and the vertebrae may shift. This can be compensated for by using a correction prosthesis 14. For example, it is constructed as shown in FIG. 5 or in FIG.
  • the correction prosthesis has an upper cover plate 15, which is designed as a correction cover plate.
  • the outer dimensions of their connecting surface 7 and thus the total surface dimensions are the same as those of the standard cover plate 2 of the first size class.
  • the center 16 of the joint surface 4 'provided on its inside is displaced dorsally by an amount 17 with respect to the center line 10. If the articulation surface 4 of the standard cover plate were used for this, it would assume the position 4 ′′ shown in dashed lines in FIG. 2. Since this partly extends beyond the edge of the standard prosthesis, this would have to be provided with a projection or a widening or the articular surface would have to be shortened according to the standard edge course is possible within the scope of the invention, but is generally not expedient.
  • the embodiment according to FIG. 6 is therefore preferred, in which that of the second size class is used for the joint surface 4 ', the diameter 12' of which is correspondingly smaller and can therefore be accommodated within the margin of the standard format of the correction cover plate 15.
  • the correction cover plate 15 is combined with a prosthesis core 3' and a lower cover plate 1 'of the second size class, as shown in FIG. If one compares the position of the joint center line 16 with the position of the connecting surface 7 of the correction cover plate 15 in this correction prosthesis, it is found that these do not coincide as in the case of the standard prostheses, but are shifted by an amount 17 from one another.
  • a correction cover plate 15 can also be used in the correction prosthesis as the lower cover plate rotated by 180 ° (FIG. 7).
  • the offset 17 achieved on the lower cover plate is added to the offset 17 found on the upper cover plate, so that the correction prosthesis according to FIG. 7 provides twice the offset compared to that according to FIG. 5.
  • the invention is particularly suitable for the type of prosthesis shown in FIGS. 1 to 7, in which the prosthesis core 3 has two mutually opposite articular surfaces 5.
  • the invention can also be applied to prostheses of the prosthesis type shown in FIGS. 8 to 11.
  • FIGS. 8 and 9 show median sections of prostheses of different size classes. They consist of a lower deck plate 21, 21 ', an upper cover plate 22 or 22' and a prosthesis core 23 or 23 '.
  • the upper cover plate 22, 22 'and the upper side of the prosthesis core 23, 23' are the same as those of the previously explained exemplary embodiment. They provide an articulated possibility of movement along the pair of articular surfaces 24, 25.
  • the underside of the prosthesis core 23 is flat.
  • the lower cover plate 21, 21 'or its core mating surface 26 with edge 27 is only designed to hold the prosthesis core 23, 23'.
  • the upper cover plate 20 is designed as a correction cover plate in accordance with the explanations for FIGS. 5 and 6. It belongs to the first, larger size class. It is composed of a prosthesis core 23 'and a lower cover plate 21' of the second, smaller size class.
  • the lower cover plate 29 belongs to the first size class and is composed of a prosthesis core 23 'and an upper cover plate 22' of the second size class. In the examples explained above, this results in an offset 17 of the joint center relative to the connection surface of the correction cover plate.
  • the offset was related to the center of the connecting surface, which in the case of standard prostheses coincides with the joint center of the prosthesis. It goes without saying, however, that one can refer to any point on the connection surface when determining the offset, the position of which relative to the center of the joint being comparable on the one hand with a standard cover plate and on the other hand when using a correction cover plate.
  • the edge strip 30 of the correction cover plate 15 is not required to accommodate the articular surface (4 '). If it is not required with regard to a desired size of the connection area 7, it can be omitted.
  • the cover plate 15 and its connection surface 7 is then limited, for example, according to the dash-dotted line 31.

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

L'invention concerne un système de prothèses de disques intervertébraux qui comprend des prothèses standards et des prothèses de correction. Les prothèses de correction servent à compenser un décalage ventro-dorsal. Elles se caractérisent en ce que, au niveau de leurs plaques de couverture (15), la face (4') par l'intermédiaire de laquelle elles coopèrent de façon ajustée avec le noyau de prothèse (3') présente un décalage ventro-dorsal par rapport à la face de raccordement (7), si l'on compare avec les prothèses standards.
EP02735149A 2001-04-05 2002-03-20 Systeme de protheses de disques intervertebraux Withdrawn EP1389982A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02735149A EP1389982A1 (fr) 2001-04-05 2002-03-20 Systeme de protheses de disques intervertebraux

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP01108607A EP1250898A1 (fr) 2001-04-05 2001-04-05 Système de prothèse de disque intervertébral
EP01108607 2001-04-05
PCT/EP2002/003132 WO2002080818A1 (fr) 2001-04-05 2002-03-20 Systeme de protheses de disques intervertebraux
EP02735149A EP1389982A1 (fr) 2001-04-05 2002-03-20 Systeme de protheses de disques intervertebraux

Publications (1)

Publication Number Publication Date
EP1389982A1 true EP1389982A1 (fr) 2004-02-25

Family

ID=8177058

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01108607A Withdrawn EP1250898A1 (fr) 2001-04-05 2001-04-05 Système de prothèse de disque intervertébral
EP02735149A Withdrawn EP1389982A1 (fr) 2001-04-05 2002-03-20 Systeme de protheses de disques intervertebraux

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP01108607A Withdrawn EP1250898A1 (fr) 2001-04-05 2001-04-05 Système de prothèse de disque intervertébral

Country Status (6)

Country Link
US (2) US20040153157A1 (fr)
EP (2) EP1250898A1 (fr)
JP (1) JP2004538045A (fr)
AR (1) AR033694A1 (fr)
TW (1) TW553739B (fr)
WO (1) WO2002080818A1 (fr)

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FR2824261B1 (fr) 2001-05-04 2004-05-28 Ldr Medical Prothese de disque intervertebral et procede et outils de mise en place
FR2831048B1 (fr) 2001-10-18 2004-09-17 Ldr Medical Dispositif d'osteosynthese a approche progressive et procede de premontage
FR2831049B1 (fr) 2001-10-18 2004-08-13 Ldr Medical Plaque pour dispositif d'osteosynthese et procede de premontage
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US7833246B2 (en) 2002-10-29 2010-11-16 Kyphon SÀRL Interspinous process and sacrum implant and method
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JP4398975B2 (ja) 2003-01-31 2010-01-13 スパイナルモーション， インコーポレイテッド 脊髄中線指示器
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ATE480203T1 (de) 2003-05-27 2010-09-15 Spinalmotion Inc Bandscheibenprothese für die intervertebrale einführung
US10052211B2 (en) 2003-05-27 2018-08-21 Simplify Medical Pty Ltd. Prosthetic disc for intervertebral insertion
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US20040153157A1 (en) 2004-08-05
EP1250898A1 (fr) 2002-10-23
US8303661B2 (en) 2012-11-06
AR033694A1 (es) 2004-01-07
TW553739B (en) 2003-09-21
JP2004538045A (ja) 2004-12-24
US20090228108A1 (en) 2009-09-10

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