DE3602081A1 - Hueftgelenkpfannen- implantat mit selbstschneidendem gewinde zur zementlosen verankerung - Google Patents

Hueftgelenkpfannen- implantat mit selbstschneidendem gewinde zur zementlosen verankerung

Info

Publication number
DE3602081A1
DE3602081A1 DE19863602081 DE3602081A DE3602081A1 DE 3602081 A1 DE3602081 A1 DE 3602081A1 DE 19863602081 DE19863602081 DE 19863602081 DE 3602081 A DE3602081 A DE 3602081A DE 3602081 A1 DE3602081 A1 DE 3602081A1
Authority
DE
Germany
Prior art keywords
thread
implant
screw
surface structure
tapping screw
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.)
Ceased
Application number
DE19863602081
Other languages
English (en)
Inventor
Harald Dr.med. 8209 Stephanskirchen Eckhardt
Martin-Wilhelm Dr. Dr.rer.nat. 6072 Dreieich Happel
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.)
Happel martin Wilhelm drdr
Original Assignee
Happel martin Wilhelm drdr
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Happel martin Wilhelm drdr filed Critical Happel martin Wilhelm drdr
Priority to DE19863602081 priority Critical patent/DE3602081A1/de
Priority to DE8601752U priority patent/DE8601752U1/de
Publication of DE3602081A1 publication Critical patent/DE3602081A1/de
Ceased legal-status Critical Current

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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
    • A61F2/32—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
    • 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
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4609—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of 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
    • A61F2/28—Bones
    • A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
    • 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
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30322—The prosthesis having different structural features at different locations within the same prosthesis differing in surface structures
    • 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
    • A61F2002/30495—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking ring
    • 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
    • A61F2002/3082—Grooves
    • A61F2002/30827—Plurality of grooves
    • 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
    • A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
    • 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
    • A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
    • A61F2002/30858—Threads interrupted by grooves or sidewalls, e.g. flat sidewalls
    • 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
    • A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
    • A61F2002/30861—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface having threads of increasing or decreasing height
    • 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
    • A61F2002/3241—Joints for the hip having a ring, e.g. for locking the femoral head into the acetabular cup
    • 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
    • A61F2002/345—Acetabular cups the inner and outer (hemi)spherical surfaces of a shell, e.g. an intermediate shell, having distinct centres of rotation, both located on the centre line of the shell
    • 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
    • A61F2002/4688—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor having operating or control means
    • A61F2002/4696—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor having operating or control means optical
    • 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
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0026—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in surface 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)

Description

  • Beschreibung:
  • Hüftpfannen- Implantate mit Gewinde zur zementlosen Verankerung, auch mit selbstschneidendem Gewinde, haben bislang häufig den Nachteil, daß der Operateur bei solchen Hüftpfannen mit grobem Gewinde eine zu große Kraft aufwenden muß, sodaß auch Frakturen im Becken auftreten können. Bei kleineren Gewindeprofilen, insbesondere bei solchen mit Dreiecks-oder Sägezahnform besteht die Gefahr, daß eine ungenügende Verankerung durch die relativ glatt bearbeiteten Gewindeflächen verursacht wird.
  • Die Lockerung des Implantates ist die Folge.
  • Der Erfindung liegt daher die Aufgabe zugrunde, bei der Verankerung einer zementlosen Hüftgelenkpfanne mit Gewinde, diese Nachteile zu vermeiden. Zu diesem Zweck wird zwar ein Gewinde mit dreieckigem Profil vorgesehen, das aber einen breiten Gewindegrund hat, ähnlich, wie bei einer Spongiosaschraube. Der Gewindegrund wird durch Sandstrahlen, Plasmastrahlen o.ä. mit einer Oberflächenstruktur versehen. Beim Einschrauben setzt sich Blut in die Oberflächenstruktur und wirkt so als Gleitmittel, das die Kraft zum Einschrauben wesentlich reduziert. Nach einiger Zeit wächst dann Knochen in die Oberflächenstruktur und bildet ein solides Implantatlager.Ebenfalls zur Begrenzung der aufzubringenden Kraft beim Einschrauben wird die Anzahl der Gewindegänge so beschränkt, daß diese nur etwa bis zur Hälfte der Höhe des Implantates reichen. Desweiteren ist die äussere Form des Gewindes konisch, sodaß der Einschraubvorgang erleichtert wird. Das schalenartige Hüftgelenkpfannen- Implantat ist zur Aufnahme eines Lagereinsatzes für den mech. Hüftkopf vorgesehen. Der Lagereinsatz wird in bekannter Weise mittels Federring und/ oder Preßsitz im vorgenannten Hüftpfannen- Implantat befestigt, Wenn nach längerem Gebrauch infolge der Abnutzung ein neuer Lagereinsatz erforderlich ist, braucht nur dieser ausgetauscht zu werden, während das Implantatlager erhalten bleibt.
  • Die Erfindung wird in folgendem anhand von Ausführungsbeispielen näher erläutert, aus denen sich weitere wichtige Merkmale ergeben.
  • Es zeigt: Fig.1 Schematisch den Querschnitt des Hüftgelenkpfannen-Implantates (vergrößert) ohne Lagereinsatz für den mechanischen Hüftkopf; Fig.2 die äussere Ansicht des Pfannen- Implantates mit den für das selbstschneidende Gewinde erforderlichen Aussparungen; Fig.3 vergrößert den Gewinde- Querschnitt von Fig.1; Fig.4 schematisch teilweise den Querschnitt des Hüftpfannen- Implantates mit Lagereinsatz und dessen Befestigung.
  • #ig.1und 3 stellen die spiralförmig um die Achse (1) der Hüftpfanne angeordneten Gewindegänge (2) mit Gewindegrund (3) dar, dessen Oberfläche zur Verbesserung des Implantatlagers mit einer Struktur versehen ist. Letztere kann nachträglich oder während des Verformungsvorganges aufgebracht werden. Die Öffnung mit dem Durchmesser D (4) dient dazu, daß der Operateur nach dem Einsetzen der Hüftpfanne in das Becken die M#öglichkeit hat, zwischen der kugelartigen Oberfläche mit dem Radius R1 und dem Knochen Hohlräume zu erkennen und diese mit Knochenspänen auszufüllen.
  • Die äussere Form des Gewindes ist zur Erleichterung des Einschraubvorganges konisch (5) ausgebildet. Zum Einschrauben des Implantates in den Knochen dienen mehrere konzentrisch angeordnete Nuten(6), in die ein Instrument mit entsprechenden Nocken eingreift. Zur Sicherung des Lagiereinsatzes gegen axiale Verschiebung ist eine Ringnut (7) vorgesehen, in die ein federnder Ring einrastet und so den Lagereinsatz axial fixiert, Fig.2 zeigt die Aussparungen (8) für das selbstschneidende Gewinde, in die Knochen einwächst und so zur Verbesserung des Implantatlagers beiträgt.
  • Fig.4 zeigt im Detail den Lagereinsatz (9) an dessen zylindrischem Teil (10) eine Ringnut (7) für den Federring (ii) angeordnet ist.
  • Zum Becken ist der Einsatz kugelförmig mit Radius R2. Der Lagereinsatz ist mit einem Kragen (12) versehen, der eine Beschädigung der Oberfläche des mechanischen Hüftkopfes (13) an den Gewinde -spitzen beim Reponieren verhindert.
  • - Leerseite -

Claims (3)

  1. Patentansprüche 1.) In den Knochen einschraubbare Schalen für eine Hüftgelenkpfanne, dadurch gekennzeichnet, daß das spiralartig um die Längsachse angeordnete Gewinde eine konische äussere Form hat und einen breitflächigen fiewindegrund, der mit einer Oberflächenstruktur versehen ist.
  2. 2.) Schalen nach Anspruch 1, dadurch gekennzeichnet,daß deren äussere Gewindebegrenzung aus verschieden geneigten Konen besteht.
  3. 3.) Schalen nach Anspruch 1 und 2, dadurch gekennzeichnet, daß deren Lagereinsätze mit einem Ring versehen sind, dessen Aussendurch -messer zur Vermeidung von Beschädigungen der Lauffläche des Kopfes durch die Gewindespitzen über den Aussendurchmesser des Gewindes hinausragt.
DE19863602081 1986-01-24 1986-01-24 Hueftgelenkpfannen- implantat mit selbstschneidendem gewinde zur zementlosen verankerung Ceased DE3602081A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19863602081 DE3602081A1 (de) 1986-01-24 1986-01-24 Hueftgelenkpfannen- implantat mit selbstschneidendem gewinde zur zementlosen verankerung
DE8601752U DE8601752U1 (de) 1986-01-24 1986-01-24 Hüftgelenkpfannen-Implantat mit selbstschneidendem Gewinde zur zementlosen Verankerung

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DE19863602081 DE3602081A1 (de) 1986-01-24 1986-01-24 Hueftgelenkpfannen- implantat mit selbstschneidendem gewinde zur zementlosen verankerung
DE8601752U DE8601752U1 (de) 1986-01-24 1986-01-24 Hüftgelenkpfannen-Implantat mit selbstschneidendem Gewinde zur zementlosen Verankerung

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DE8601752U Expired DE8601752U1 (de) 1986-01-24 1986-01-24 Hüftgelenkpfannen-Implantat mit selbstschneidendem Gewinde zur zementlosen Verankerung

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298234A1 (de) * 1987-07-09 1989-01-11 GebràœDer Sulzer Aktiengesellschaft Hüftgelenkspfanne
DE3804310C1 (de) * 1988-02-09 1989-07-06 Mecron Medizinische Produkte Gmbh, 1000 Berlin, De
US4944759A (en) * 1986-01-21 1990-07-31 Joint Medical Products Corporation Porous-coated artificial joints
FR2668923A1 (fr) * 1990-11-13 1992-05-15 Tech Avancees Sarl Cupule pour implantation cotylouidienne et prothese de hanche la comportant.
US5358532A (en) * 1992-06-16 1994-10-25 Smith & Nephew Richards Inc. Cementless acetabular cup
EP0640325A1 (de) * 1993-08-30 1995-03-01 SULZER Medizinaltechnik AG Mehrteilige künstliche Gelenkpfanne und Hüftgelenkprothese mit einer derartigen Gelenkpfanne
DE4336551C1 (de) * 1993-10-27 1995-03-23 Eska Medical Gmbh & Co Gelenkpfanne für ein künstliches Hüftgelenk
FR2733409A1 (fr) * 1995-04-27 1996-10-31 Howmedica France Cotyle pour prothese de hanche
DE19520468C1 (de) * 1995-06-03 1996-11-28 Werner Scholz Künstliche Hüftgelenkpfanne
FR2735355A1 (fr) * 1995-04-05 1996-12-20 Lefoll Gerard Implant cotyloidien a centre de rotation optimise
US5702473A (en) * 1993-12-23 1997-12-30 Astra Aktiebolag Cup
EP1053723A1 (de) * 1999-05-19 2000-11-22 Olivier Himmer Versetztes Hüftgelenkpfannenimplantat mit beweglichem Einsatz
WO2006050708A2 (de) * 2004-11-09 2006-05-18 Hoermansdoerfer Gerd Selbstschneidender einschraubkörper
US8679187B2 (en) 2006-03-20 2014-03-25 Smith & Nephew, Inc. Acetabular cup assembly for multiple bearing materials
US8864837B2 (en) 2004-11-09 2014-10-21 Gerd Hörmansdörfer Screw-in element having changing thread profile and method for its production

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19514455C1 (de) * 1995-04-19 1996-11-14 Werner Scholz Endoprothese, insbesondere künstliche Hüftgelenkpfanne
DE19612648C2 (de) * 1996-03-29 2001-12-06 Dietmar A Kumm Halterungssysteme für Hüftpfannen-Endoprothesen
DE19654106A1 (de) * 1996-12-23 1998-07-02 Man Ceramics Gmbh Mehrteiliges Implantat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129174A1 (de) * 1981-07-21 1983-02-03 Mecron Med Prod Gmbh "hueftgelenkpfannen-prothese"
DE3325448A1 (de) * 1983-07-14 1985-01-24 Link Waldemar Gmbh Co Hueftpfannen-endoprothese

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3129174A1 (de) * 1981-07-21 1983-02-03 Mecron Med Prod Gmbh "hueftgelenkpfannen-prothese"
DE3325448A1 (de) * 1983-07-14 1985-01-24 Link Waldemar Gmbh Co Hueftpfannen-endoprothese

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944759A (en) * 1986-01-21 1990-07-31 Joint Medical Products Corporation Porous-coated artificial joints
CH672587A5 (de) * 1987-07-09 1989-12-15 Sulzer Ag
US4908033A (en) * 1987-07-09 1990-03-13 Sulzer Brothers Limited Hip joint acetabulum
EP0298234A1 (de) * 1987-07-09 1989-01-11 GebràœDer Sulzer Aktiengesellschaft Hüftgelenkspfanne
DE3804310C1 (de) * 1988-02-09 1989-07-06 Mecron Medizinische Produkte Gmbh, 1000 Berlin, De
FR2668923A1 (fr) * 1990-11-13 1992-05-15 Tech Avancees Sarl Cupule pour implantation cotylouidienne et prothese de hanche la comportant.
US5358532A (en) * 1992-06-16 1994-10-25 Smith & Nephew Richards Inc. Cementless acetabular cup
EP0640325A1 (de) * 1993-08-30 1995-03-01 SULZER Medizinaltechnik AG Mehrteilige künstliche Gelenkpfanne und Hüftgelenkprothese mit einer derartigen Gelenkpfanne
US5549695A (en) * 1993-08-30 1996-08-27 Sulzer Medizinaltechnic Ag Composite artificial socket and hip joint prosthesis
DE4336551C1 (de) * 1993-10-27 1995-03-23 Eska Medical Gmbh & Co Gelenkpfanne für ein künstliches Hüftgelenk
US5702473A (en) * 1993-12-23 1997-12-30 Astra Aktiebolag Cup
FR2735355A1 (fr) * 1995-04-05 1996-12-20 Lefoll Gerard Implant cotyloidien a centre de rotation optimise
FR2733409A1 (fr) * 1995-04-27 1996-10-31 Howmedica France Cotyle pour prothese de hanche
EP0743050A1 (de) * 1995-04-27 1996-11-20 Howmedica France Gelenkpfanne für Hüftprothese
DE19520468C1 (de) * 1995-06-03 1996-11-28 Werner Scholz Künstliche Hüftgelenkpfanne
EP1053723A1 (de) * 1999-05-19 2000-11-22 Olivier Himmer Versetztes Hüftgelenkpfannenimplantat mit beweglichem Einsatz
FR2793674A1 (fr) * 1999-05-19 2000-11-24 Olivier Himmer Implant cotyloidien medialise et a noyau mobile
WO2006050708A2 (de) * 2004-11-09 2006-05-18 Hoermansdoerfer Gerd Selbstschneidender einschraubkörper
WO2006050708A3 (de) * 2004-11-09 2007-02-22 Gerd Hoermansdoerfer Selbstschneidender einschraubkörper
AU2005304158B2 (en) * 2004-11-09 2008-11-20 Gerd Hormansdorfer Self-tapping screw-in body
US8206454B2 (en) 2004-11-09 2012-06-26 Hoermansdoerfer Gerd Self-cutting screw-in element
US8864837B2 (en) 2004-11-09 2014-10-21 Gerd Hörmansdörfer Screw-in element having changing thread profile and method for its production
US8679187B2 (en) 2006-03-20 2014-03-25 Smith & Nephew, Inc. Acetabular cup assembly for multiple bearing materials

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