CA2531144A1 - Intervertebral disk prosthesis - Google Patents
Intervertebral disk prosthesis Download PDFInfo
- Publication number
- CA2531144A1 CA2531144A1 CA002531144A CA2531144A CA2531144A1 CA 2531144 A1 CA2531144 A1 CA 2531144A1 CA 002531144 A CA002531144 A CA 002531144A CA 2531144 A CA2531144 A CA 2531144A CA 2531144 A1 CA2531144 A1 CA 2531144A1
- Authority
- CA
- Canada
- Prior art keywords
- prosthesis
- profile
- intervertebral disk
- angle
- cover plate
- 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
Links
- 230000000295 complement effect Effects 0.000 claims abstract description 4
- -1 polyethylene Polymers 0.000 description 3
- 206010052804 Drug tolerance Diseases 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
- A61F2002/30387—Dovetail connection
-
- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30517—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking plate
-
- 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
- A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
- A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
-
- 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
- A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed
-
- 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
- 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
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
The invention relates to an intervertebral disk prosthesis comprising two cover plates and a prosthesis core that is joined to one of the cover plates (1) by means of connecting profiles (8, 8', 14, 14') which are undercut in a complementary manner. Said connecting profiles (8, 8', 14, 14') are provided with at least one couple of profiled sections (9, 16) that are symmetric in relation to the anterior-posterior direction (10) and are disposed at an angle from each other.
Description
Cervitech, Inc.
D/so Intervertebral disk prosthesis A known type of intervertebral disk prosthesis (WO
01/01893) has two metal cover plates and a polyethylene prosthesis core which forms a pair of slide surfaces with one of the two cover plates and is fixed on the other cover plate. For this fixing, the cover plate is provided with edge ridges whose undercut connection profile cooperates with a complementary connection profile on the underside of the prosthesis core. On the right and left lateral edges of the cover plate and of the prosthesis core, such connection profiles are provided parallel to one another. In addition, there is one such profile running in a straight line on the dorsal edge of the cover plate and of the prosthesis core.
There is no such profile on the ventral edge, with the re-sult that the prosthesis core can be pushed into the con-nection profiles of the cover plate from the ventral direc-tion. The prosthesis core is secured in the assembled posi-tion by a pair of locking elements provided on the ventral edge. Although the connection profiles are produced almost free of play, an important concern in prosthesis production is to ensure that, even in the case of production toler-ances, it is possible to rule out any movement of the pros-thesis core relative to the cover plate holding it. In par-ticular, rotation movements of the prosthesis core relative to the cover plate holding it must be ruled out.
The prior art gives no indications as to how this problem could be solved. FR-A-2718635 discloses connection profiles only on parallel, lateral edges of the cover plate. They are absent in all the nonlateral and nonparallel edge ar-eas. For knee prostheses, FR-A-2632516 discloses the fixing of a polyethylene part in a retaining profile by means of horseshoe-shaped connection profiles, but this does not af-ford any guarantee that the nonparallel sections of the connection profiles will also remain in engagement with one another. For a shoulder prosthesis, FR-A-2780635 discloses the fixing of a polyethylene part on a retaining part by means of connection profiles extending exclusively at an angle with respect to one another. This cannot be adapted the shape requirements of an intervertebral disk prosthe-sis.
The invention has recognized that the problem with in-tervertebral disk prostheses can be solved by the special arrangement of the connection profiles given in claim 1.
Accordingly, provision is made that the connection profiles include at least one pair of connection profile sections which are symmetrical with respect to the AP direction and are arranged at an angle to one another. AP direction sig-nifies the anteroposterior direction. The profile sections arranged at an angle to one another according to the inven-tion create a triangular configuration which counteracts twisting of the prosthesis core relative to the cover plate if play exists between the connection profiles of the cover plate and of the prosthesis core. The connection profiles can basically be made up exclusively of such profile sec-tions arranged at an angle to one another. However, these can also be provided additionally to connection profiles arranged in parallel on the lateral edges of the cover plate and of the prosthesis core. They are intended to run in a substantially straight line and are preferably ar-ranged at least on the dorsal side. The angle between the profile sections arranged at an angle to one another should not be greater than 150°. The limit preferably lies for ex-ample at 140°.
D/so Intervertebral disk prosthesis A known type of intervertebral disk prosthesis (WO
01/01893) has two metal cover plates and a polyethylene prosthesis core which forms a pair of slide surfaces with one of the two cover plates and is fixed on the other cover plate. For this fixing, the cover plate is provided with edge ridges whose undercut connection profile cooperates with a complementary connection profile on the underside of the prosthesis core. On the right and left lateral edges of the cover plate and of the prosthesis core, such connection profiles are provided parallel to one another. In addition, there is one such profile running in a straight line on the dorsal edge of the cover plate and of the prosthesis core.
There is no such profile on the ventral edge, with the re-sult that the prosthesis core can be pushed into the con-nection profiles of the cover plate from the ventral direc-tion. The prosthesis core is secured in the assembled posi-tion by a pair of locking elements provided on the ventral edge. Although the connection profiles are produced almost free of play, an important concern in prosthesis production is to ensure that, even in the case of production toler-ances, it is possible to rule out any movement of the pros-thesis core relative to the cover plate holding it. In par-ticular, rotation movements of the prosthesis core relative to the cover plate holding it must be ruled out.
The prior art gives no indications as to how this problem could be solved. FR-A-2718635 discloses connection profiles only on parallel, lateral edges of the cover plate. They are absent in all the nonlateral and nonparallel edge ar-eas. For knee prostheses, FR-A-2632516 discloses the fixing of a polyethylene part in a retaining profile by means of horseshoe-shaped connection profiles, but this does not af-ford any guarantee that the nonparallel sections of the connection profiles will also remain in engagement with one another. For a shoulder prosthesis, FR-A-2780635 discloses the fixing of a polyethylene part on a retaining part by means of connection profiles extending exclusively at an angle with respect to one another. This cannot be adapted the shape requirements of an intervertebral disk prosthe-sis.
The invention has recognized that the problem with in-tervertebral disk prostheses can be solved by the special arrangement of the connection profiles given in claim 1.
Accordingly, provision is made that the connection profiles include at least one pair of connection profile sections which are symmetrical with respect to the AP direction and are arranged at an angle to one another. AP direction sig-nifies the anteroposterior direction. The profile sections arranged at an angle to one another according to the inven-tion create a triangular configuration which counteracts twisting of the prosthesis core relative to the cover plate if play exists between the connection profiles of the cover plate and of the prosthesis core. The connection profiles can basically be made up exclusively of such profile sec-tions arranged at an angle to one another. However, these can also be provided additionally to connection profiles arranged in parallel on the lateral edges of the cover plate and of the prosthesis core. They are intended to run in a substantially straight line and are preferably ar-ranged at least on the dorsal side. The angle between the profile sections arranged at an angle to one another should not be greater than 150°. The limit preferably lies for ex-ample at 140°.
The invention is explained in more detail below with refer-ence to the drawing which depicts an advantageous illustra-tive embodiment and in which:
Fig. 1 shows a perspective view of the end plate with the prosthesis core secured on it, Figs 2 to 4 show different views of the same end plate without prosthesis core, and Figs 5 and 6 show perspective views of the prosthesis core.
The end plate 1, which is normally used as the lower end plate, has an approximately oval contour and comprises a toothed fastening surface 2 for bearing on the vertebral body and a flange 3 which comes to lie on the ventral side of the vertebral body and can be screwed to the latter via screw holes 4. On that side opposite the fastening surface 2, the one normally lying to the top, the cover plate 1 forms a support for the prosthesis core 5. This support consists of a plane surface 6 and, surrounding the latter, an edge 7 which is composed of two parallel sections 7' on the lateral sides of the plate and of a dorsal edge 7 " .
The outer contour of the edge 7 corresponds to the oval contour of the cover plate. On its side facing toward the surface 6, the edge is provided with a profile ridge 8 and, below the latter, with an undercut 8'. The connection pro-file thereby formed on the inner side of the edge 7 runs in a straight line in the lateral sections 7' and parallel on both sides. In the dorsal section 7 " , the connection pro-file is composed of two sections 9. In each of these sec-tions, the connection profile runs in a straight line. The profiles of both sections are arranged symmetrically with respect to the AP axis 10 of the implant and enclose an an-gle a which, in the example shown, is 140°.
The top of the edge 7 forms a plane surface 6' which runs parallel to the support surface 6 and likewise forms a sup-port surface for the prosthesis core.
The flange 3 of the cover plate has a slit 11 which runs perpendicular to the connection profile 6 and whose func-tion is explained later.
On its top 12, the prosthesis core 5 forms a slide surface which cooperates with the second cover plate (not shown) to form a hinge. The contour of the prosthesis core is identi-cal to that of the cover plate 1. On its underside, it has a plane surface 13 which is intended to bear on the support surface 6 of the end plate 1 and has substantially the same contour shape. It is limited by a connection profile which is formed by a profile ridge 14 and an undercut 14'. This connection profile corresponds in a complementary manner to the connection profile 8, 9 of the edge ridge 7 of the cover plate 1. In particular, the connection profile is composed of two lateral sections 15 and two dorsal sections 16 which correspond respectively to the lateral and dorsal sections of the edge 7 of the cover plate 1 and can cooper-ate with these in a form-fitting manner.
Outside the connection profile 14, 14', on the underside of the prosthesis core 5 there is a plane surface 17 which corresponds to the support surface 6' on the top of the edge 7 of the cover plate 1 and cooperates with this when the prosthesis core is mounted on the cover plate 1.
The prosthesis is assembled by means of the prosthesis core being pushed with its connection profile 14, 14' into the corresponding connection profiles 8, 8' from the direction of the open ventral side. When the prosthesis core has been pushed in fully, its profile ridge 14 fits, not only in the area of the lateral sections 7' but also in the area of the dorsal section 7 " , into the undercut 8' of the edge 7 of the cover plate, the connection profiles lying on one an-other with substantially full-surface contact.
At the location where the slit 11 is situated in the gap 3, the prosthesis core has a groove 18 which is flush with the gap 11 when the prosthesis core has reached its end posi-tion in which the dorsal connection profiles abut one an-other. A plate (not shown) is pushed into the gap 11 and the groove 18 and secures the prosthesis core in this posi-tion relative to the cover plate 1. The plate is in turn secured by means of also having a bore at the location of the screw hole shown on the left in Fig. 3, through which bore a fastening screw extends.
By virtue of the fact that the connection profiles of the prosthesis core and of the cover plate are equipped, re-spectively, with the sections 9 and 16 which each form a triangle, it is possible, in comparison with known prosthe-ses, to obtain increased stability of the position of the prosthesis core relative to the cover plate 1. In particu-lar, its stability with respect to relative movements in the sense of rotation is thereby increased.
Fig. 1 shows a perspective view of the end plate with the prosthesis core secured on it, Figs 2 to 4 show different views of the same end plate without prosthesis core, and Figs 5 and 6 show perspective views of the prosthesis core.
The end plate 1, which is normally used as the lower end plate, has an approximately oval contour and comprises a toothed fastening surface 2 for bearing on the vertebral body and a flange 3 which comes to lie on the ventral side of the vertebral body and can be screwed to the latter via screw holes 4. On that side opposite the fastening surface 2, the one normally lying to the top, the cover plate 1 forms a support for the prosthesis core 5. This support consists of a plane surface 6 and, surrounding the latter, an edge 7 which is composed of two parallel sections 7' on the lateral sides of the plate and of a dorsal edge 7 " .
The outer contour of the edge 7 corresponds to the oval contour of the cover plate. On its side facing toward the surface 6, the edge is provided with a profile ridge 8 and, below the latter, with an undercut 8'. The connection pro-file thereby formed on the inner side of the edge 7 runs in a straight line in the lateral sections 7' and parallel on both sides. In the dorsal section 7 " , the connection pro-file is composed of two sections 9. In each of these sec-tions, the connection profile runs in a straight line. The profiles of both sections are arranged symmetrically with respect to the AP axis 10 of the implant and enclose an an-gle a which, in the example shown, is 140°.
The top of the edge 7 forms a plane surface 6' which runs parallel to the support surface 6 and likewise forms a sup-port surface for the prosthesis core.
The flange 3 of the cover plate has a slit 11 which runs perpendicular to the connection profile 6 and whose func-tion is explained later.
On its top 12, the prosthesis core 5 forms a slide surface which cooperates with the second cover plate (not shown) to form a hinge. The contour of the prosthesis core is identi-cal to that of the cover plate 1. On its underside, it has a plane surface 13 which is intended to bear on the support surface 6 of the end plate 1 and has substantially the same contour shape. It is limited by a connection profile which is formed by a profile ridge 14 and an undercut 14'. This connection profile corresponds in a complementary manner to the connection profile 8, 9 of the edge ridge 7 of the cover plate 1. In particular, the connection profile is composed of two lateral sections 15 and two dorsal sections 16 which correspond respectively to the lateral and dorsal sections of the edge 7 of the cover plate 1 and can cooper-ate with these in a form-fitting manner.
Outside the connection profile 14, 14', on the underside of the prosthesis core 5 there is a plane surface 17 which corresponds to the support surface 6' on the top of the edge 7 of the cover plate 1 and cooperates with this when the prosthesis core is mounted on the cover plate 1.
The prosthesis is assembled by means of the prosthesis core being pushed with its connection profile 14, 14' into the corresponding connection profiles 8, 8' from the direction of the open ventral side. When the prosthesis core has been pushed in fully, its profile ridge 14 fits, not only in the area of the lateral sections 7' but also in the area of the dorsal section 7 " , into the undercut 8' of the edge 7 of the cover plate, the connection profiles lying on one an-other with substantially full-surface contact.
At the location where the slit 11 is situated in the gap 3, the prosthesis core has a groove 18 which is flush with the gap 11 when the prosthesis core has reached its end posi-tion in which the dorsal connection profiles abut one an-other. A plate (not shown) is pushed into the gap 11 and the groove 18 and secures the prosthesis core in this posi-tion relative to the cover plate 1. The plate is in turn secured by means of also having a bore at the location of the screw hole shown on the left in Fig. 3, through which bore a fastening screw extends.
By virtue of the fact that the connection profiles of the prosthesis core and of the cover plate are equipped, re-spectively, with the sections 9 and 16 which each form a triangle, it is possible, in comparison with known prosthe-ses, to obtain increased stability of the position of the prosthesis core relative to the cover plate 1. In particu-lar, its stability with respect to relative movements in the sense of rotation is thereby increased.
Claims (5)
1. An intervertebral disk prosthesis with two cover plates and a prosthesis core (5) which is con-nected to one of the cover plates (1) by means of connection profiles (8, 8', 14, 14') which are un-dercut in a complementary manner, characterized in that the connection profiles (8, 8', 14, 14') in-clude at least one pair of profile sections (9, 16) which are symmetrical with respect to the AP
direction (10) and are arranged at an angle to one another.
direction (10) and are arranged at an angle to one another.
2. The intervertebral disk prosthesis as claimed in claim 1, characterized in that the profile sec-tions (9, 16) arranged at an angle to one another run in a substantially straight line.
3. The intervertebral disk prosthesis as claimed in claim 1 or 2, characterized in that the profile sections (9, 16) arranged at an angle to one an-other are arranged on the dorsal side and are held in engagement by means (11, 18) arranged on the ventral side.
4. The intervertebral disk prosthesis as claimed in claim 3, characterized in that the profile sec-tions (9, 16) arranged on the dorsal side are pro-vided in addition to a pair of laterally arranged profile sections (7').
5. The intervertebral disk prosthesis as claimed in claim 1 or 2, characterized in that the angle (a) between the profile sections (9, 16) arranged at an angle to one another is not greater than 150°.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03016441.2 | 2003-07-21 | ||
| EP03016441A EP1512384A1 (en) | 2003-07-21 | 2003-07-21 | Intervertebral disc prosthesis |
| PCT/EP2004/006484 WO2005018508A1 (en) | 2003-07-21 | 2004-06-16 | Intervertebral disk prosthesis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2531144A1 true CA2531144A1 (en) | 2005-03-03 |
Family
ID=34130027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002531144A Abandoned CA2531144A1 (en) | 2003-07-21 | 2004-06-16 | Intervertebral disk prosthesis |
Country Status (17)
| Country | Link |
|---|---|
| EP (2) | EP1512384A1 (en) |
| JP (1) | JP2007533335A (en) |
| KR (1) | KR20060056337A (en) |
| CN (1) | CN100563603C (en) |
| AR (1) | AR048854A1 (en) |
| AT (1) | ATE389375T1 (en) |
| AU (1) | AU2004266431B2 (en) |
| BR (1) | BRPI0412782A (en) |
| CA (1) | CA2531144A1 (en) |
| DE (1) | DE502004006595D1 (en) |
| ES (1) | ES2302000T3 (en) |
| IL (1) | IL172608A0 (en) |
| MX (1) | MXPA06000747A (en) |
| PL (1) | PL1646337T3 (en) |
| RU (1) | RU2340312C2 (en) |
| WO (1) | WO2005018508A1 (en) |
| ZA (1) | ZA200601352B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5198117B2 (en) * | 2008-03-28 | 2013-05-15 | 富士フイルム株式会社 | Curable composition for nanoimprint, fine pattern and method for producing the same, color filter, display device, and method for producing treated substrate |
| BE1024357B1 (en) * | 2016-07-08 | 2018-02-06 | Tfc Medical Sa | Modular implant for corporectomy |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2632516B1 (en) * | 1988-06-10 | 1991-02-01 | Guy Esteve | MONOCOMPARTIMENTAL KNEE PROSTHESIS COMPRISING A TIBIAL TRAY WITH A METAL SEAT |
| FR2718635B1 (en) * | 1994-04-15 | 1996-07-05 | Axcyl Medical | Cervical prosthesis. |
| FR2780635B1 (en) * | 1998-07-06 | 2000-10-20 | Tornier Sa | DEVICE FOR FIXING A PLASTIC INSERT |
| DE29911422U1 (en) * | 1999-07-02 | 1999-08-12 | Aesculap Ag & Co Kg | Intervertebral implant |
-
2003
- 2003-07-21 EP EP03016441A patent/EP1512384A1/en not_active Withdrawn
-
2004
- 2004-06-16 ES ES04739950T patent/ES2302000T3/en not_active Expired - Lifetime
- 2004-06-16 CA CA002531144A patent/CA2531144A1/en not_active Abandoned
- 2004-06-16 AU AU2004266431A patent/AU2004266431B2/en not_active Ceased
- 2004-06-16 WO PCT/EP2004/006484 patent/WO2005018508A1/en active IP Right Grant
- 2004-06-16 PL PL04739950T patent/PL1646337T3/en unknown
- 2004-06-16 CN CNB2004800209191A patent/CN100563603C/en not_active Expired - Fee Related
- 2004-06-16 KR KR1020067001333A patent/KR20060056337A/en not_active Application Discontinuation
- 2004-06-16 EP EP04739950A patent/EP1646337B1/en not_active Expired - Lifetime
- 2004-06-16 MX MXPA06000747A patent/MXPA06000747A/en unknown
- 2004-06-16 BR BRPI0412782-0A patent/BRPI0412782A/en not_active IP Right Cessation
- 2004-06-16 JP JP2006520687A patent/JP2007533335A/en active Pending
- 2004-06-16 RU RU2006105201/14A patent/RU2340312C2/en not_active IP Right Cessation
- 2004-06-16 AT AT04739950T patent/ATE389375T1/en not_active IP Right Cessation
- 2004-06-16 DE DE502004006595T patent/DE502004006595D1/en not_active Expired - Lifetime
- 2004-07-20 AR ARP040102562A patent/AR048854A1/en active IP Right Grant
-
2005
- 2005-12-15 IL IL172608A patent/IL172608A0/en active IP Right Grant
-
2006
- 2006-02-15 ZA ZA200601352A patent/ZA200601352B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP1646337B1 (en) | 2008-03-19 |
| AU2004266431B2 (en) | 2009-06-11 |
| IL172608A0 (en) | 2006-04-10 |
| CN1826091A (en) | 2006-08-30 |
| WO2005018508A1 (en) | 2005-03-03 |
| KR20060056337A (en) | 2006-05-24 |
| RU2006105201A (en) | 2006-06-10 |
| EP1646337A1 (en) | 2006-04-19 |
| MXPA06000747A (en) | 2006-03-30 |
| PL1646337T3 (en) | 2008-08-29 |
| JP2007533335A (en) | 2007-11-22 |
| EP1512384A1 (en) | 2005-03-09 |
| AU2004266431A1 (en) | 2005-03-03 |
| RU2340312C2 (en) | 2008-12-10 |
| BRPI0412782A (en) | 2006-09-26 |
| ATE389375T1 (en) | 2008-04-15 |
| AR048854A1 (en) | 2006-06-07 |
| ES2302000T3 (en) | 2008-07-01 |
| ZA200601352B (en) | 2006-09-27 |
| DE502004006595D1 (en) | 2008-04-30 |
| CN100563603C (en) | 2009-12-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |