DE10062330B4 - Conical spherical pressfit cup to replace the acetabular cup - Google Patents

Conical spherical pressfit cup to replace the acetabular cup Download PDF

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Publication number
DE10062330B4
DE10062330B4 DE10062330A DE10062330A DE10062330B4 DE 10062330 B4 DE10062330 B4 DE 10062330B4 DE 10062330 A DE10062330 A DE 10062330A DE 10062330 A DE10062330 A DE 10062330A DE 10062330 B4 DE10062330 B4 DE 10062330B4
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Prior art keywords
pan
cup
pressfit
conical
replace
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Expired - Fee Related
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DE10062330A
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DE10062330A1 (en
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Thomas Siebel
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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
    • A61F2/34—Acetabular cups
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A61F2002/30845—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes with cutting edges
    • 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
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A61F2002/3403—Polar aperture
    • 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
    • A61F2/34—Acetabular cups
    • A61F2002/3412—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface
    • A61F2002/3417—Acetabular cups with pins or protrusions, e.g. non-sharp pins or protrusions projecting from a shell surface the outer shell having protrusions on meridian lines, e.g. equidistant fins or wings around the equatorial zone
    • 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
    • A61F2/34—Acetabular cups
    • A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
    • A61F2002/3462—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped having a frustoconical external shape, e.g. entirely frustoconical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures

Landscapes

  • 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

Konisch-sphärische Pressfit-Pfanne zum Ersatz der natürlichen Hüftgelenkpfanne, dadurch gekennzeichnet, dass die Pressfit-Pfanne zum einen aus einem konischen Ring (1) als Pfannenrand besteht, der eine Kippstabilität der Pfanne gewährleistet, sowie einem sphärischen Boden, der der Anatomie der ursprünglichen natürlichen Hüftgelenkpfanne nahekommt.Conical-spherical pressfit cup to replace the natural acetabular cup, characterized in that the pressfit cup consists on the one hand of a conical ring (1) as the pan rim, which ensures that the pan tilts, and a spherical base that matches the anatomy of the original natural acetabular cup.

Figure 00000001
Figure 00000001

Description

Schraubpfannen und Pressfit-Pfannen als Implantate zum Ersatz der Hüftgelenkpfanne sind in der Prothetik Stand der Technik. Die Krafteinleitung einer Hüftgelenkpfanne erfolgt über den Pfannenrand des Acetabulums und nicht über den Pfannenboden. Der wesentliche Vorteil der bekannten Schraubpfannen besteht in der im Bereich des Pfannenrandes durch Gewindezüge vorhandenen Oberflächenvergrößerung verbunden jedoch mit dem Nachteil, dass die Schraubpfanne nicht in den Knochen einsinken kann.Screw pans and pressfit pans as implants to replace the acetabular cup are state of the art in prosthetics. The force application of a acetabulum takes place via the pan edge of the acetabulum and not over the bottom of the pan. The essential The advantage of the known screw pans is in the area of Pan rim by threading existing surface enlargement connected however with the disadvantage that the screw socket is not in the bone can sink in.

Bekannte Pressfit-Pfannen benötigen Stabilisierungszüge bzw. eine Schraube, um eine Rotationsstabilität zu erzielen. Die exzentrisch angebrachte Schraube verhindert dabei ein Nachsinken der Pfanne, weshalb zwischenzeitlich Pressfit-Pfannen mit Oberflächenbeschichtung auch ohne Stabilisierungsschrauben eingebracht werden.Known pressfit pans require stabilizing cables or a screw to achieve rotational stability. The eccentric attached screw prevents the pan from sinking, which is why in the meantime pressfit pans with surface coating can also be inserted without stabilizing screws.

Der in den Patentansprüchen angegebenen Erfindung liegt das Problem zugrunde, dass zum einen eine Kippstabilität der Pfanne erreicht werden muß, zum anderen die Pfanne der vormaligen natürlichen Hüftgelenkpfanne in der Anatomie sehr nahe kommen muß, schließlich eine Oberflächenvergrößerung im Bereich des Pfannenrandes erzielt werden muß, im Hinblick auf die dortige Krafteinleitung, sodann eine Rotationsstabilität. Die Pfanne muß schließlich nachsinken können, darf nicht fest fixiert sein.The invention specified in the claims the underlying problem is that, on the one hand, the pan tilts must be achieved on the other hand the cup of the former natural acetabular cup in the anatomy must come very close finally a surface enlargement in the Area of the pan edge must be achieved with regard to that Force application, then rotation stability. The pan must finally sink can, must not be fixed in place.

Diese Probleme werden durch die in den Patentansprüchen aufgeführten Merkmale, nämlich die Kombination eines konischen Rings mit einem sphärischen Boden und mit Bestückung des konischen Pfannenrandes mit Stabilisierungsflügeln, die in den Knochen einschneiden, gelöst.These problems are solved by the in the patent claims listed Characteristics, namely the combination of a conical ring with a spherical one Floor and with equipment of the conical pan rim with stabilizing wings, the cut into the bone, loosened.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, dass aufgrund der Kombination eines konischen Rings mit einem sphärischen Boden eine Kippstabilität der Pfanne gewährleistet wird, wobei gleichzeitig diese Prothese aufgrund ihrer Ausformung der Anatomie der ehemaligen Hüftgelenkprothese nahekommt.The advantages achieved with the invention consist in particular that due to the combination of a conical ring with a spherical Bottom a stability the pan ensures at the same time this prosthesis due to its shape the anatomy of the former hip joint prosthesis comes close.

Weiter kommt es zu einer Oberflächenvergrößerung im Bereich des Pfannenrandes durch die Bestückung des konischen Pfannenrandes mit Stabilisierungsflügeln, die in den Knochen einschneiden.There is also an increase in surface area in the Area of the pan edge by equipping the conical pan edge with stabilizing wings, who cut into the bones.

Durch diese Kombination werden eine maximale große Oberfläche im Bereich der Krafteinleitung am Pfannenring, eine Rotationsstabilität, eine Kippstabilität durch die konische Form und die Möglichkeit des Nachsinkens erreicht.This combination makes one maximum size surface in the area of force transmission on the pan ring, a rotational stability, a tilting stability achieved by the conical shape and the possibility of sinking.

Das Metallimplantat kann sodann wahlweise mit einem Polyethylen-Inlay oder einem Keramik-Inlay oder mit sonstigen Inlays bestückt werden. Schließlich ist ein zentrales Loch im Implantatboden für die Spongiosaplastik vorhanden.The metal implant can then optionally with a polyethylene inlay or a ceramic inlay or with others Loaded inlays become. Finally there is a central hole in the implant floor for the cancellous bone plastic.

Nachstehend wird eine bevorzugte Ausführungsform einer erfindungsgemäß ausgebildeten Pressfit-Pfanne anhand der beigefügten Zeichnungen näher erläutert. Es zeigen:Below is a preferred one embodiment a press-fit pan designed according to the invention based on the attached Drawings closer explained. Show it:

1 eine erste erfindungsgemäß ausgebildete Pressfit-Pfanne in Seitenansicht, und 1 a first Pressfit pan designed according to the invention in side view, and

2 ein zweites Ausführungsbeispiel für eine Pressfit-Pfanne nach der Erfindung mit einem Loch im Boden in einer Draufsicht. 2 a second embodiment of a pressfit pan according to the invention with a hole in the bottom in a plan view.

Eine konisch-sphärische Pressfit-Pfanne zum Ersatz der Hüftgelenkpfanne weist einen konischen Ring 1 auf, welcher Kippstabilität der Pfanne gewährleistet.A conical-spherical pressfit cup to replace the acetabular cup has a conical ring 1 on which ensures the tilting stability of the pan.

Der Ring 1 ist mit einem sphärischen Boden 2 verbunden. Der Boden 2 kommt der Anatomie der ursprünglichen natürlichen Hüftgelenkpfanne nahe.The ring 1 is with a spherical bottom 2 connected. The floor 2 comes close to the anatomy of the original natural acetabular cup.

Am konischen, durch den Ring 1 gebildeten Pfannenrand sind Stabilisierungsflügel 3 angebracht, die in den Knochen einschneiden. Durch die Stabilisierungsflügel 3 wer den eine Oberflächenvergrößerung im Bereich des Pfannenrandes, Rotationsstabilität und zusätzliche Kippstabilität der Pfanne erzielt.At the conical, through the ring 1 formed pan edge are stabilizing wings 3 attached that cut into the bone. Through the stabilizing wing 3 who achieves an increase in surface area in the area of the pan edge, rotational stability and additional tilting stability of the pan.

Die Bezugszahl 4 in 2 weist auf ein zentrales Loch für die Spongiosaplastik im Boden 2a des Implantats hin.The reference number 4 in 2 points to a central hole for cancellous bone plastic in the floor 2a of the implant.

Claims (3)

Konisch-sphärische Pressfit-Pfanne zum Ersatz der natürlichen Hüftgelenkpfanne, dadurch gekennzeichnet, dass die Pressfit-Pfanne zum einen aus einem konischen Ring (1) als Pfannenrand besteht, der eine Kippstabilität der Pfanne gewährleistet, sowie einem sphärischen Boden, der der Anatomie der ursprünglichen natürlichen Hüftgelenkpfanne nahekommt.Conical-spherical pressfit cup to replace the natural acetabular cup, characterized in that the pressfit cup consists on the one hand of a conical ring ( 1 ) as the pan rim, which ensures that the pan tilts, and a spherical base that approximates the anatomy of the original natural acetabular cup. Pressfit-Pfanne nach Anspruch 1, dadurch gekennzeichnet, dass der konische Pfannenrand mit Stabilisierungsflügeln (3), die in den Knochen einschneiden, bestückt ist, zur Erzielung einer Oberflächenvergrößerung im Bereich des Pfannenrandes, einer Rotationsstabilität und zusätzlicher Kippstabilität.Pressfit pan according to claim 1, characterized in that the conical pan rim with stabilizing wings ( 3 ), which cut into the bone, is equipped to achieve an increase in surface area in the region of the pan edge, rotation stability and additional tilting stability. Pressfit-Pfanne nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass ein zentrales Loch (4) im Implantatboden für die Spongiosaplastik vorgesehen und das Metallimplantat selbst mit einem Polyethylen-Inlay oder Keramik-Inlay bestückbar ist.Pressfit pan according to claim 1 or 2, characterized in that a central hole ( 4 ) is provided in the implant floor for cancellous plastic surgery and the metal implant itself can be fitted with a polyethylene inlay or ceramic inlay.
DE10062330A 2000-12-15 2000-12-15 Conical spherical pressfit cup to replace the acetabular cup Expired - Fee Related DE10062330B4 (en)

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DE10062330B4 true DE10062330B4 (en) 2004-08-19

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10324184B4 (en) * 2003-05-28 2005-05-19 Martin Imhof Joint socket for hip joint endoprostheses
CN113633439A (en) * 2020-04-27 2021-11-12 萨摩(重庆)医疗器材有限公司 3D prints hip joint replacement false body

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214885A1 (en) * 1985-08-12 1987-03-18 Jean-Alain Epinette Acetabular cup for a hip joint to be implanted without cement
DE3630276A1 (en) * 1986-09-05 1988-03-17 Gernot Dr Med Felmet Cementlessly implantable self-tensioning acetabular cup
FR2641461A1 (en) * 1989-01-11 1990-07-13 Cremascoli Spa G Acetabulum prosthesis which may be used without cement
DE3901885A1 (en) * 1989-01-23 1990-08-02 Werner Prof Dr Med Sattel PAN FOR A JOINT OPROTHESIS
FR2715556A1 (en) * 1994-02-03 1995-08-04 Landanger Landos Reconstruction of acetabulum cavity during hip replacement
DE19701778A1 (en) * 1996-11-21 1998-06-10 Plus Endoprothetik Ag Joint socket for a hip joint endoprosthesis
DE19723620A1 (en) * 1997-06-05 1998-12-10 Laghaollah Dr Med Elhami Easily fitted, secure, artificial hip joint socket requiring no screws

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0214885A1 (en) * 1985-08-12 1987-03-18 Jean-Alain Epinette Acetabular cup for a hip joint to be implanted without cement
DE3630276A1 (en) * 1986-09-05 1988-03-17 Gernot Dr Med Felmet Cementlessly implantable self-tensioning acetabular cup
FR2641461A1 (en) * 1989-01-11 1990-07-13 Cremascoli Spa G Acetabulum prosthesis which may be used without cement
DE3901885A1 (en) * 1989-01-23 1990-08-02 Werner Prof Dr Med Sattel PAN FOR A JOINT OPROTHESIS
FR2715556A1 (en) * 1994-02-03 1995-08-04 Landanger Landos Reconstruction of acetabulum cavity during hip replacement
DE19701778A1 (en) * 1996-11-21 1998-06-10 Plus Endoprothetik Ag Joint socket for a hip joint endoprosthesis
DE19723620A1 (en) * 1997-06-05 1998-12-10 Laghaollah Dr Med Elhami Easily fitted, secure, artificial hip joint socket requiring no screws

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