DE20112123U1 - Facet joint implant - Google Patents

Facet joint implant

Info

Publication number
DE20112123U1
DE20112123U1 DE20112123U DE20112123U DE20112123U1 DE 20112123 U1 DE20112123 U1 DE 20112123U1 DE 20112123 U DE20112123 U DE 20112123U DE 20112123 U DE20112123 U DE 20112123U DE 20112123 U1 DE20112123 U1 DE 20112123U1
Authority
DE
Germany
Prior art keywords
implant according
implant
fixing element
legs
facet
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.)
Expired - Lifetime
Application number
DE20112123U
Other languages
German (de)
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.)
Aesculap AG
Original Assignee
Aesculap AG
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Filing date
Publication date
Application filed by Aesculap AG filed Critical Aesculap AG
Priority to DE10135771A priority Critical patent/DE10135771B4/en
Priority to DE20112123U priority patent/DE20112123U1/en
Publication of DE20112123U1 publication Critical patent/DE20112123U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • A61B17/7064—Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
    • 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
    • A61F2/4405—Joints for the spine, e.g. vertebrae, spinal discs for apophyseal or facet joints, i.e. between adjacent spinous or transverse processes
    • 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
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30172—T-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30179—X-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30785—Plurality of holes parallel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/0052—T-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/0058—X-shaped

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (32)

1. Facettengelenkimplantat zur Arthrodese eines ei­ nen Gelenkspalt und zwei Facetten umfassenden Fa­ cettengelenks, wobei die zwei Facetten jeweils eine der anderen zugewandte Facettenoberfläche aufweisen, mit mindestens einem Fixierelement, dadurch gekennzeichnet, daß das mindestens eine Fixierelement (130; 230; 330; 430; 530; 666, 667; 785; 885) mindestens eine erste und eine zweite Oberfläche (144, 145; 244, 245; 344, 345; 458, 459; 558, 559; 658, 659; 758, 759; 858, 859) auf­ weist und daß die erste und die zweite Oberfläche (144, 145; 244, 245; 344, 345; 458, 459; 558, 559; 658, 659; 758, 759; 858, 859) mit mindestens einer Facette (116, 118; 216, 218; 316, 318; 416, 418; 516, 518; 616, 618; 716, 718; 816, 818) flä­ chig in Kontakt bringbar sind.1. Facet joint implant for arthrodesis of a joint space and two facets comprising facet joint, the two facets each having a facet surface facing the other, with at least one fixing element, characterized in that the at least one fixing element ( 130 ; 230 ; 330 ; 430 ; 530 ; 666 , 667 ; 785 ; 885 ) at least a first and a second surface ( 144 , 145 ; 244 , 245 ; 344 , 345 ; 458 , 459 ; 558 , 559 ; 658 , 659 ; 758 , 759 ; 858 , 859 ) and that the first and second surfaces ( 144 , 145 ; 244 , 245 ; 344 , 345 ; 458 , 459 ; 558 , 559 ; 658 , 659 ; 758 , 759 ; 858 , 859 ) with at least one facet ( 116 , 118 ; 216 , 218 ; 316 , 318 ; 416 , 418 ; 516 , 518 ; 616 , 618 ; 716 , 718 ; 816 , 818 ) can be brought into surface contact. 2. Implantat nach Anspruch 1, dadurch gekennzeich­ net, daß zwei Fixierelemente (530, 566, 567) vor­ gesehen sind und daß das eine (566, 567) der zwei Fixierelemente (530, 566, 567) das andere Fixier­ element (530) in einer Querrichtung durchdringt.2. Implant according to claim 1, characterized in that two fixing elements ( 530 , 566 , 567 ) are seen before and that one ( 566 , 567 ) of the two fixing elements ( 530 , 566 , 567 ) the other fixing element ( 530 ) penetrates in a transverse direction. 3. Implantat nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, daß das mindestens eine Fixierelement (130; 230; 330; 430; 530; 885) im wesentlichen parallel zu den Facettenoberflächen orientierte Oberflächen (144, 145; 244, 245; 344, 345; 458, 459; 558, 559; 858, 859) aufweist und zwischen die Facettenoberflächen einbringbar ist.3. Implant according to claim 1 or 2, characterized in that the at least one fixing element ( 130 ; 230 ; 330 ; 430 ; 530 ; 885 ) surfaces ( 144 , 145 ; 244 , 245 ; 344 ) oriented essentially parallel to the facet surfaces, 345 ; 458 , 459 ; 558 , 559 ; 858 , 859 ) and can be inserted between the facet surfaces. 4. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das mindestens eine Fixierelement (666, 667; 785; 885) an einer im wesentlichen U-förmigen Klammer (670; 770; 870) angeordnet ist und daß die Klammer (670; 770; 870) zwei Schenkel (672, 673; 772, 773; 872, 873) und einen die zwei Schenkel (672, 673; 772, 773; 872, 873) verbindenden Quersteg (674; 774; 874) umfaßt.4. Implant according to one of the preceding claims, characterized in that the at least one fixing element ( 666 , 667 ; 785 ; 885 ) is arranged on a substantially U-shaped bracket ( 670 ; 770 ; 870 ) and that the bracket ( 670 ; 770 ; 870 ) comprises two legs ( 672 , 673 ; 772 , 773 ; 872 , 873 ) and a crossbar ( 674 ; 774 ; 874 ) connecting the two legs ( 672 , 673 ; 772 , 773 ; 872 , 873 ). 5. Implantat nach Anspruch 4, dadurch gekennzeich­ net, daß das mindestens eine Fixierelement (785; 885) am Quersteg (774; 874) angeordnet ist.5. Implant according to claim 4, characterized in that the at least one fixing element ( 785 ; 885 ) is arranged on the crossbar ( 774 ; 874 ). 6. Implantat nach einem der Ansprüche 4 oder 5, da­ durch gekennzeichnet, daß das mindestens eine Fi­ xierelement (666, 667) an mindestens einem der zwei Schenkel (672, 673) angeordnet ist.6. Implant according to one of claims 4 or 5, characterized in that the at least one fi xierelement ( 666 , 667 ) is arranged on at least one of the two legs ( 672 , 673 ). 7. Implantat nach einem der Ansprüche 4 bis 6, da­ durch gekennzeichnet, daß das mindestens eine Fi­ xierelement (666, 667; 785) im wesentlichen parallel zu einer von den Schenkeln (672, 673; 772, 773) und dem Quersteg (674; 774) definierten Ebe­ ne an der Klammer (670; 770) angeordnet ist.7. Implant according to one of claims 4 to 6, characterized in that the at least one fi xierelement ( 666 , 667 ; 785 ) substantially parallel to one of the legs ( 672 , 673 ; 772 , 773 ) and the crossbar ( 674 ; 774 ) defined level ne on the bracket ( 670 ; 770 ) is arranged. 8. Implantat nach einem der Ansprüche 4 bis 7, da­ durch gekennzeichnet, daß das mindestens eine Fi­ xierelement (885) im wesentlichen quer zu einer von den Schenkeln (872, 873) und dem Quersteg (874) definierten Ebene an der Klammer (870) an­ geordnet ist.8. Implant according to one of claims 4 to 7, characterized in that the at least one fi xierelement ( 885 ) substantially transversely to a plane defined by the legs ( 872 , 873 ) and the transverse web ( 874 ) on the bracket ( 870 ) is arranged on. 9. Implantat nach einem der Ansprüche 4 bis 8, da­ durch gekennzeichnet, daß mindestens einer der beiden Schenkel (672, 673; 772, 773; 872, 873) eine in einer Schenkeloberfläche angeordnete Ver­ tiefung (680, 681; 780, 781; 880, 881) umfaßt.9. Implant according to one of claims 4 to 8, characterized in that at least one of the two legs ( 672 , 673 ; 772 , 773 ; 872 , 873 ) has a recess ( 680 , 681 ; 780 , 781 ; 880 , 881 ). 10. Implantat nach Anspruch 9, dadurch gekennzeich­ net, daß die Vertiefung eine in Längsrichtung von mindestens einem der beiden Schenkel (672, 673; 772, 773; 872, 873) verlaufende Nut (680, 681; 780, 781; 880, 881) umfaßt.10. The implant according to claim 9, characterized in that the recess is a in the longitudinal direction of at least one of the two legs ( 672 , 673 ; 772 , 773 ; 872 , 873 ) extending groove ( 680 , 681 ; 780 , 781 ; 880 , 881 ) includes. 11. Implantat nach einem der Ansprüche 4 bis 10, da­ durch gekennzeichnet, daß die beiden Schenkel (672, 673; 772, 773; 872, 873) freie Enden (678, 679; 778, 779; 878, 879) aufweisen und daß an den freien Enden (678, 679; 778, 779; 878, 879) Schneiden vorgesehen sind.11. Implant according to one of claims 4 to 10, characterized in that the two legs ( 672 , 673 ; 772 , 773 ; 872 , 873 ) have free ends ( 678 , 679 ; 778 , 779 ; 878 , 879 ) and that cutting edges are provided at the free ends ( 678 , 679 ; 778 , 779 ; 878 , 879 ). 12. Implantat nach einem der Ansprüche 4 bis 11, da­ durch gekennzeichnet, daß an mindestens einem der beiden Schenkel (672, 673; 772, 773; 872, 873) in Richtung auf die Facetten (616, 618; 716, 718; 816, 818) abstehende Verankerungselemente (676, 677; 776, 777; 876, 877) vorgesehen sind.12. Implant according to one of claims 4 to 11, characterized in that on at least one of the two legs ( 672 , 673 ; 772 , 773 ; 872 , 873 ) in the direction of the facets ( 616 , 618 ; 716 , 718 ; 816 , 818 ) projecting anchoring elements ( 676 , 677 ; 776 , 777 ; 876 , 877 ) are provided. 13. Implantat nach einem der Ansprüche 4 bis 12, da­ durch gekennzeichnet, daß der Quersteg (674; 774; 874) und/oder mindestens einer der beiden Schen­ kel (672, 673; 772, 773; 872, 873) einen im we­ sentlichen rechteckigen Querschnitt aufweisen.13. Implant according to one of claims 4 to 12, characterized in that the cross bar ( 674 ; 774 ; 874 ) and / or at least one of the two legs ( 672 , 673 ; 772 , 773 ; 872 , 873 ) one in we have a substantial rectangular cross-section. 14. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das Implantat (600; 700; 800) eine Werkzeugaufnahme (682, 683; 782, 783; 882, 883) zum Verbinden mit einem Ein­ setzwerkzeug umfaßt.14. Implant according to one of the preceding claims, characterized in that the implant ( 600 ; 700 ; 800 ) comprises a tool holder ( 682 , 683 ; 782 , 783 ; 882 , 883 ) for connection to an insertion tool. 15. Implantat nach Anspruch 14 und einem der Ansprü­ che 4 bis 13, dadurch gekennzeichnet, daß die Werkzeugaufnahme (682, 683; 782, 783; 882, 883) an der Klammer (670; 770; 870) angeordnet ist. 15. Implant according to claim 14 and one of claims 4 to 13, characterized in that the tool holder ( 682 , 683 ; 782 , 783 ; 882 , 883 ) is arranged on the bracket ( 670 ; 770 ; 870 ). 16. Implantat nach einem der Ansprüche 14 oder 15, dadurch gekennzeichnet, daß die Werkzeugaufnahme mindestens einen vom Implantat (600; 700; 800) weg weisenden, abgewinkelten Vorsprung (682, 683; 782, 783; 882, 883) umfaßt.16. Implant according to one of claims 14 or 15, characterized in that the tool holder comprises at least one angled projection ( 682 , 683 ; 782 , 783 ; 882 , 883 ) pointing away from the implant ( 600 ; 700 ; 800 ). 17. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß die erste und die zweite mit mindestens einer Facette (416, 418; 516, 518; 816, 818) in Kontakt stehende Oberfläche (458, 459; 558, 559, 858, 859) des mindestens einen Fixierelements (430; 530; 885) in Richtung auf die zugeordnete Facettenoberflä­ che konkav gekrümmt sind.17. Implant according to one of the preceding claims, characterized in that the first and the second with at least one facet ( 416 , 418 ; 516 , 518 ; 816 , 818 ) are in contact with the surface ( 458 , 459 ; 558 , 559 , 858 , 859 ) of the at least one fixing element ( 430 ; 530 ; 885 ) are concavely curved in the direction of the associated facet surface. 18. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das mindestens eine Fixierelement (566, 567; 666, 667; 785) eine planparallele Platte umfaßt.18. Implant according to one of the preceding claims, characterized in that the at least one fixing element ( 566 , 567 ; 666 , 667 ; 785 ) comprises a plane-parallel plate. 19. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das mindestens eine Fixierelement (130; 230; 330) eine Keilform aufweist. 19. Implant according to one of the preceding claims, characterized in that the at least one fixing element ( 130 ; 230 ; 330 ) has a wedge shape. 20. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das mindestens eine Fixierelement (130; 230; 330) konisch oder mehrfach konisch ausgebildet ist.20. Implant according to one of the preceding claims, characterized in that the at least one fixing element ( 130 ; 230 ; 330 ) is conical or has multiple cones. 21. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das mindestens eine Fixierelement (130; 230; 430; 530; 885) eine an mindestens eine der beiden Facetten (118; 218; 416, 418; 516, 518; 816, 818) angepaßte Krümmung aufweist.21. Implant according to one of the preceding claims, characterized in that the at least one fixing element ( 130 ; 230 ; 430 ; 530 ; 885 ) is attached to at least one of the two facets ( 118 ; 218 ; 416 , 418 ; 516 , 518 ; 816 , 818 ) has an adapted curvature. 22. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß an dem Implantat (300; 500; 600; 700; 800) in Richtung auf die Fa­ cetten abstehende Verankerungselemente (352, 353; 566, 567; 672, 673; 772, 773; 872, 873) vorgese­ hen sind.22. Implant according to one of the preceding claims, characterized in that on the implant ( 300 ; 500 ; 600 ; 700 ; 800 ) anchoring elements ( 352 , 353 ; 566 , 567 ; 672 , 673 ; 772 ) projecting in the direction of the facets , 773 ; 872 , 873 ) are provided. 23. Implantat nach Anspruch 22, dadurch gekennzeich­ net, daß die Verankerungselemente in Form von Schneiden (672, 673; 772, 773; 872, 873), Zähnen (352, 353) oder Rippen (566, 567) ausgebildet sind.23. Implant according to claim 22, characterized in that the anchoring elements are in the form of cutting edges ( 672 , 673 ; 772 , 773 ; 872 , 873 ), teeth ( 352 , 353 ) or ribs ( 566 , 567 ). 24. Implantat nach Anspruch 23, dadurch gekennzeich­ net, daß das mindestens eine Fixierelement (130; 530) zwei im wesentlichen quer zu einer von dem mindestens einen Fixierelement (130; 530) defi­ nierten Ebene seitlich abstehende Rippen (140, 141; 566, 567) trägt.24. Implant according to claim 23, characterized in that the at least one fixing element ( 130 ; 530 ) two ribs ( 140 , 141 ; 566 , laterally protruding substantially transversely to a plane defined by the at least one fixing element ( 130 ; 530 ), 567 ). 25. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das mindestens eine Fixierelement (130; 230; 430) mit Durchbre­ chungen (132; 232, 233; 464) versehen ist.25. Implant according to one of the preceding claims, characterized in that the at least one fixing element ( 130 ; 230 ; 430 ) is provided with openings ( 132 ; 232 , 233 ; 464 ). 26. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß an dem Implantat (100; 200; 400) mindestens eine Befestigungsele­ mentaufnahme (132; 232, 233; 464) vorgesehen ist.26. Implant according to one of the preceding claims, characterized in that at least one fastening element ( 132 ; 232 , 233 ; 464 ) is provided on the implant ( 100 ; 200 ; 400 ). 27. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß am Implantat (100; 200; 300; 500; 600; 700; 800) mindestens ein Stabilisierungsanschlag (140, 141; 250; 350; 566, 567; 674; 774; 874) zum Stabilisieren des Fixierelements (130; 230; 330; 530; 666, 667; 785; 885) im Gelenkspalt vorgesehen ist.27. Implant according to one of the preceding claims, characterized in that at least one stabilizing stop ( 140 , 141 ; 250 ; 350 ; 566 , 567 ; 674 ; 774. ) On the implant ( 100 ; 200 ; 300 ; 500 ; 600 ; 700 ; 800 ) ; 874 ) for stabilizing the fixing element ( 130 ; 230 ; 330 ; 530 ; 666 , 667 ; 785 ; 885 ) is provided in the joint gap. 28. Implantat nach Anspruch 27, dadurch gekennzeich­ net, daß der Stabilisierungsanschlag zwei an Stirnflächen (136, 137) des Fixierelements (130) angeordnete, in dieselbe Richtung abstehende Vor­ sprünge (140, 141) umfaßt.28. Implant according to claim 27, characterized in that the stabilization stop comprises two on end faces ( 136 , 137 ) of the fixing element ( 130 ) arranged in the same direction projecting projections ( 140 , 141 ). 29. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das Implantat (100; 200; 300; 400; 500; 600; 700; 800) einstüc­ kig geformt ist.29. Implant according to one of the preceding claims, characterized in that the implant ( 100 ; 200 ; 300 ; 400 ; 500 ; 600 ; 700 ; 800 ) is formed in one piece. 30. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das Implantat (100; 200; 300; 400; 500; 600; 700; 800) eine mit einer Mikrostrukturierung und/oder einer bioakti­ ven Beschichtung versehene Oberfläche aufweist.30. Implant according to one of the preceding claims, characterized in that the implant ( 100 ; 200 ; 300 ; 400 ; 500 ; 600 ; 700 ; 800 ) has a surface provided with a microstructuring and / or a bioactive coating. 31. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das Implantat (100; 200; 300; 400; 500; 600; 700; 800) aus ei­ nem röntgentransparenten Material hergestellt ist.31. Implant according to one of the preceding claims, characterized in that the implant ( 100 ; 200 ; 300 ; 400 ; 500 ; 600 ; 700 ; 800 ) is made from an X-ray transparent material. 32. Implantat nach einem der voranstehenden Ansprü­ che, dadurch gekennzeichnet, daß das Implantat (100; 200; 300; 400; 500; 600; 700; 800) aus TiAl6V4 oder NiTiNol hergestellt ist.32. Implant according to one of the preceding claims, characterized in that the implant ( 100 ; 200 ; 300 ; 400 ; 500 ; 600 ; 700 ; 800 ) is made of TiAl6V4 or NiTiNol.
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