DE202004012594U1 - Set for creating a joint head cap implant for an artificial hip joint - Google Patents

Set for creating a joint head cap implant for an artificial hip joint Download PDF

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Publication number
DE202004012594U1
DE202004012594U1 DE200420012594 DE202004012594U DE202004012594U1 DE 202004012594 U1 DE202004012594 U1 DE 202004012594U1 DE 200420012594 DE200420012594 DE 200420012594 DE 202004012594 U DE202004012594 U DE 202004012594U DE 202004012594 U1 DE202004012594 U1 DE 202004012594U1
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Prior art keywords
cap
joint
guide pin
creating
implant
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Expired - Lifetime
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DE200420012594
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German (de)
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ORTHODYNAMICS GMBH, DE
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Eska Implants GmbH and Co KG
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Priority to DE200420012594 priority Critical patent/DE202004012594U1/en
Publication of DE202004012594U1 publication Critical patent/DE202004012594U1/en
Priority to PCT/EP2005/004296 priority patent/WO2006015630A1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
    • A61F2/3603—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices implanted without ablation of the whole natural femoral head
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
    • 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
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30224—Three-dimensional shapes cylindrical
    • 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
    • A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • 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
    • 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
    • A61F2002/30795—Blind bores, e.g. of circular cross-section
    • A61F2002/30797—Blind bores, e.g. of circular cross-section internally-threaded
    • 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
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • 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
    • A61F2/30907—Nets or sleeves applied to surface of prostheses or in cement
    • A61F2002/30909—Nets
    • 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
    • A61F2002/3092—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth having an open-celled or open-pored structure
    • 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
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
    • 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
    • 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
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0069—Three-dimensional shapes cylindrical

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (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

Set zur Erstellung eines Gelenkkopf-Kappenimplantates für ein künstliches Hüftgelenk, aufweisend wenigstens eine der Form der natürlichen Gelenkkugel nachgebildeten Kappe (1), die auf einen teilresezierten Schenkelkopfhals setzbar ist, sowie einen proximal im Polbereich der Kappe (1) exakt mittig mit dieser verbindbaren Führungsstift (2).set to create a joint head cap implant for an artificial one Hip joint, showing at least one of the natural form Articulated ball replica cap (1) on a partially resected Femoral head neck can be placed, as well as a proximal in the pole area the cap (1) exactly in the middle with this connectable guide pin (2).

Figure 00000001
Figure 00000001

Description

Die vorliegende Erfindung betrifft ein Set zur Erstellung eines Gelenckopf-Kappenimplantates für ein künstliches Hüftgelenk.The The present invention relates to a set for creating a gel head cap implant for a artificial Hip joint.

In jüngster Zeit kommen verstärkt so genannte Kappenimplantate zur Anwendung, welche über den präparierten natürlichen Restgelenkkopf bzw. über den resezierten Schenkelkopfhals gesetzt werden und in dieser Lage dann fixiert werden. Voraussetzung für eine stabile Sekundärfixation ist stabiles Knochenmaterial des Restknochens. So wird gemäß der DE-A-102 18 801 vorgeschlagen, an die Gelenkkopfkappe einen Zapfen anzukoppeln, der in eine entsprechende Ausfräsung im Schenkelhals gesetzt wird. Dieser Zapfen weist eine Oberfläche auf, welche mit einer dreidimensionalen offenmaschigen Raumnetzstruktur versehen ist, in welche und durch welche hindurch Knochentrapekel des umliegenden Knochenmaterials wachsen und für die stabile Sekundärfixation sorgen.In recently, Time is coming so-called cap implants for use, which over the groomed natural Remaining joint head or over the resected femoral head neck are placed in this position then be fixed. Prerequisite for a stable secondary fixation is stable bone material of the remaining bone. So according to DE-A-102 18 801 proposed coupling a pin to the joint head cap, in a corresponding cutout is placed in the neck of the femur. This peg has a surface which provided with a three-dimensional open-mesh spatial network structure is in and through which bone trapezoids of the surrounding bone material grow and for the stable secondary fixation to care.

Der Zapfen hat eine tragende und fixierende Funktion.The Tenon has a load-bearing and fixing function.

Es gibt Indikationen, bei denen man noch davon absehen kann, den Schenkelhalskopf auszufräsen, um so Platz für den Zapfen zu schaffen. Problematisch ist dann aber die achsgerechte Positionierung der Kappe auf dem präparierten Restgelenkkopf. Eine Fehlstellung kann später dann zu weitreichenden Konsequenzen führen.It there are indications for which the femoral neck head can still be disregarded ream, so space for to create the cone. But then the problem is that the axis is correct Position the cap on the prepared residual joint head. A Malposition can occur later then lead to far-reaching consequences.

Vor diesem Hintergrund ist es die Aufgabe der vorliegenden Erfindung ein eingangs erwähntes Set vorzuschlagen, bei dem das daraus erstellte Gelenkkopf-Kappenimplantat achsgerecht auf dem Restgelenkkopf positioniert werden kann.In front Against this background, it is the object of the present invention a set mentioned at the beginning to propose, in which the joint head cap implant created from it can be positioned on the residual joint head in line with the axis.

Gelöst wird diese Aufgabe durch ein Set mit den Merkmalen des Anspruchs 1. Weitere vorteilhafte Ausführungsformen ergeben sich aus den Unteransprüchen.Is solved this task through a set with the features of claim 1. Further advantageous embodiments result from the subclaims.

Demnach weist das Set wenigstens eine der Form der natürlichen Gelenkkugel nachgebildeten Kappe, die auf einen teilresezierten Schenkelkopfhals setzbar ist, sowie einen proximal im Polbereich der Kappe exakt mittig mit dieser verbindbaren Führungsstift oder -draht auf.Therefore the set has at least one cap modeled on the shape of the natural joint ball, which can be placed on a partially resected femoral head neck, and one proximally in the pole area of the cap, which can be connected to it exactly in the middle guide pin or wire on.

Bei der Implantation wird entlang der Achse des Schenkelhalses eine Bohrung in den Knochen eingebracht mit einem Durchmesser, der dem Durchmesser des Führungsstiftes entspricht oder geringfügig größer ist. Sodann wird das aus dem Set erstellte Gelenkkopf-Kappenimplantat zuerst mit dem Führungsstift in die erwähnte Bohrung gesetzt und schließlich auf den Schenkelkopfhals geschoben. Hierbei übt der Führungsstift seine Funktion aus. Wenn das Implantat auf dem Schenkelkopfhals positioniert ist, hat der Führungsstift oder -draht keine weitere Funktion mehr, insbesondere keine ablastende oder fixierende Funktion.at the implantation becomes one along the axis of the femoral neck Drilled hole in the bone with a diameter that corresponds to the Diameter of the guide pin corresponds or slightly is bigger. Then the joint head cap implant created from the set first with the guide pin in the mentioned Hole set and finally pushed onto the femoral head neck. Here the guide pin performs its function out. When the implant is positioned on the femoral head neck, has the guide pin or wire no more function, especially no relieving or fixing function.

Gemäß einer besonders bevorzugten Ausführungsform ist der Führungsstift mit der Kappe verschraubbar. Im Polbereich der Kappe ist dann eine sich nach Innen öffnende Gewindebohrung vorgesehen, welche als Gegenstück auf das Führungsstiftende in Form eines Gewindes trifft.According to one particularly preferred embodiment is the guide pin screwable with the cap. Then there is one in the pole area of the cap inward opening Threaded bore provided, which acts as a counterpart to the guide pin end in the form of a thread.

Bevorzugt umfasst das Set mehrere Führungsstifte unterschiedlicher Länge. Dies erlaubt es, die Führung der Kappe beim Aufsetzen auf den Restgelenkkopf patientenindividuell zu gestalten.Prefers the set includes several guide pins of different lengths. This allows leadership the cap when placing it on the residual joint head for each patient to design.

Die Langzeitfixation der Kappe auf dem Restgelenkkopf übernimmt vorzugsweise eine Strukturierung aller mit dem Schenkelkopfhals in Berührung kommenden Gelenkflächen. Die Strukturierung ist bevorzugt so ausgebildet, dass sich eine offenmaschige, dreidimensionale Raumnetzstruktur ausbildet, in die und durch die hindurch Knochentrapekel wachsen können und so für eine stabile Langzeitfixation sorgen.The Long-term fixation of the cap on the residual joint head takes over preferably structuring all with the femoral head neck in touch coming articular surfaces. The structuring is preferably designed such that a forms open-mesh, three-dimensional network structure into which and through which bone trapezoids can grow and thus for a stable Provide long-term fixation.

Die Erfindung wird beispielhaft anhand der Zeichnungsfiguren erläutert. Hierbei zeigt:The The invention is explained by way of example with reference to the drawing figures. in this connection shows:

1 das Set mit der Kappe und dem Führungsstift, und 1 the set with the cap and the guide pin, and

2 das aus dem Set erstellte Gelenkkopf-Kappenimplantat. 2 the rod end cap implant created from the set.

Das Set besteht aus mindestens einer der Form der natürlichen Gelenkkugel nachgebildeten Kappe 1 sowie aus wenigstens einem Führungsstift 2, der proximal im Polbereich der Kappe 1 exakt mittig mit dieser verbindbar ist. Die Verbindung erfolgt im gezeigten Ausführungsbeispiel durch eine Verschraubung. Zu diesem Zweck weist die Kappe 1 in ihrem Polbereich eine Bohrung mit Innengewinde 4 und der Führungsstift ein Außengewinde 5 auf.The set consists of at least one cap modeled on the shape of the natural joint ball 1 and at least one guide pin 2 , the proximal in the pole area of the cap 1 can be connected exactly in the middle. The connection is made in the embodiment shown by a screw. For this purpose the cap points 1 a bore with an internal thread in its pole area 4 and the guide pin has an external thread 5 on.

Sämtliche Innenflächen der Kappe 1, welche nach der Implantation mit dem knöchernen Schenkelkopfhals in Kontakt kommen, sind im dargestellten Ausführungsbeispiel mit einer offenmaschigen, dreidimensionalen Raumnetzstruktur 3 strukturiert, derart, dass Knochentrapekel vom Schenkelkopfhals in die Struktur und durch diese hindurch wachsen können, wodurch für eine stabile Längzeitfixation des Implantates gesorgt ist. In Abweichung von dieser bevorzugten Ausführungsform ist es auch möglich, dass die Kontaktflächen nicht strukturiert sind, sondern die Kappe 1 mittels Knochenzement auf dem Schenkelkopfhals gehalten wird.All inner surfaces of the cap 1 Which come into contact with the bony femoral head neck after the implantation are in the illustrated embodiment with an open-mesh, three-dimensional network structure 3 structured in such a way that bone trapezoids can grow from and into the structure of the femoral head neck, thereby ensuring a stable long-term fixation of the implant. In deviation from this preferred embodiment, it is also possible that the contact surfaces are not structured, but the cap 1 is held on the femoral head neck by means of bone cement.

2 zeigt das Gelenkkopf-Kappenimplantat nach Verschraubung des Führungsstiftes 2 mit der Kappe 1. 2 shows the joint head cap implant after screwing the guide pin 2 with the cap 1 ,

Claims (4)

Set zur Erstellung eines Gelenkkopf-Kappenimplantates für ein künstliches Hüftgelenk, aufweisend wenigstens eine der Form der natürlichen Gelenkkugel nachgebildeten Kappe (1), die auf einen teilresezierten Schenkelkopfhals setzbar ist, sowie einen proximal im Polbereich der Kappe (1) exakt mittig mit dieser verbindbaren Führungsstift (2).Set for creating a joint head cap implant for an artificial hip joint, comprising at least one cap that mimics the shape of the natural joint ball ( 1 ), which can be placed on a partially resected femoral head neck and a proximal in the pole area of the cap ( 1 ) exactly in the middle with this connectable guide pin ( 2 ). Set nach Anspruch 1, bei dem der Führungsstift (2) mit der Kappe (1) verschraubbar ist.Set according to claim 1, wherein the guide pin ( 2 ) with the cap ( 1 ) is screwable. Set nach Anspruch 1 oder 2, bei dem mehrere Führungsstifte (2) unterschiedlicher Länge vorgesehen sind.Set according to claim 1 or 2, in which a plurality of guide pins ( 2 ) of different lengths are provided. Set nach einem der Ansprüche 1 bis 3, bei dem die Kontaktflächen mit dem Schenkelkopfhals strukturiert sind mit einer offenmaschigen, dreidimensionalen Raumnetzstruktur (3).Set according to one of Claims 1 to 3, in which the contact surfaces with the femoral head neck are structured with an open-mesh, three-dimensional network structure ( 3 ).
DE200420012594 2004-08-09 2004-08-09 Set for creating a joint head cap implant for an artificial hip joint Expired - Lifetime DE202004012594U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE200420012594 DE202004012594U1 (en) 2004-08-09 2004-08-09 Set for creating a joint head cap implant for an artificial hip joint
PCT/EP2005/004296 WO2006015630A1 (en) 2004-08-09 2005-04-21 Set for producing a condyle cap implant for an artificial hip joint

Applications Claiming Priority (1)

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DE200420012594 DE202004012594U1 (en) 2004-08-09 2004-08-09 Set for creating a joint head cap implant for an artificial hip joint

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DE202004012594U1 true DE202004012594U1 (en) 2004-10-14

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005006023B3 (en) * 2005-02-08 2006-08-03 Eska Implants Gmbh & Co. Artificial implant cap for hip joint has internal packing material filling void to natural bone
WO2007057680A2 (en) * 2005-11-18 2007-05-24 Corin Limited Resurfacing femoral head component
GB2434749A (en) * 2006-02-06 2007-08-08 Hip Dynamics Ltd Hip prosthesis
WO2008037978A1 (en) * 2006-09-26 2008-04-03 Smith & Nephew Plc Medical implant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4976740A (en) * 1989-07-14 1990-12-11 Kleiner Jeffrey B Anchored femoral dome
IT1273952B (en) * 1995-02-22 1997-07-11 Francesco Caracciolo TOTAL ANATOMICAL PROSTHESIS OF THE HIP
DE10021387C2 (en) * 2000-05-03 2002-09-12 Giorgio E Curradini Cap to be placed on the femoral femoral head
DE10218801B3 (en) * 2002-04-23 2004-01-15 Eska Implants Gmbh & Co. Set for creating a reinforcement implant

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005006023B3 (en) * 2005-02-08 2006-08-03 Eska Implants Gmbh & Co. Artificial implant cap for hip joint has internal packing material filling void to natural bone
WO2006084493A2 (en) * 2005-02-08 2006-08-17 Eska Implants Gmbh & Co. Condyle cap implant for an artificial hip joint
WO2006084493A3 (en) * 2005-02-08 2006-11-16 Eska Implants Gmbh & Co Condyle cap implant for an artificial hip joint
GB2430375A (en) * 2005-02-08 2007-03-28 Eska Implants Gmbh & Co Condyle cap implant for an artificial hip joint
GB2430375B (en) * 2005-02-08 2009-05-13 Eska Implants Gmbh & Co Femoral head cap implant for an artifical hip joint
WO2007057680A2 (en) * 2005-11-18 2007-05-24 Corin Limited Resurfacing femoral head component
WO2007057680A3 (en) * 2005-11-18 2007-07-12 Corin Ltd Resurfacing femoral head component
GB2434749A (en) * 2006-02-06 2007-08-08 Hip Dynamics Ltd Hip prosthesis
WO2008037978A1 (en) * 2006-09-26 2008-04-03 Smith & Nephew Plc Medical implant

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