DE8601752U1 - Hüftgelenkpfannen-Implantat mit selbstschneidendem Gewinde zur zementlosen Verankerung - Google Patents

Hüftgelenkpfannen-Implantat mit selbstschneidendem Gewinde zur zementlosen Verankerung

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Publication number
DE8601752U1
DE8601752U1 DE8601752U DE8601752U DE8601752U1 DE 8601752 U1 DE8601752 U1 DE 8601752U1 DE 8601752 U DE8601752 U DE 8601752U DE 8601752 U DE8601752 U DE 8601752U DE 8601752 U1 DE8601752 U1 DE 8601752U1
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Germany
Prior art keywords
thread
self
implant
acetabular cup
tapping thread
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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
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DE8601752U
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English (en)
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HAPPEL MARTIN WILHELM DR DR 6072 DREIEICH DE
Original Assignee
HAPPEL MARTIN WILHELM DR DR 6072 DREIEICH DE
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Application filed by HAPPEL MARTIN WILHELM DR DR 6072 DREIEICH DE filed Critical HAPPEL MARTIN WILHELM DR DR 6072 DREIEICH DE
Priority to DE8601752U priority Critical patent/DE8601752U1/de
Priority to DE19863602081 priority patent/DE3602081A1/de
Publication of DE8601752U1 publication Critical patent/DE8601752U1/de
Expired legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603Special 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
    • A61F2/4609Special 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/28Bones
    • A61F2002/2835Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The 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
    • A61F2002/30317The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30322The prosthesis having different structural features at different locations within the same prosthesis differing in surface structures
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The 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
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30495Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking ring
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3082Grooves
    • A61F2002/30827Plurality of grooves
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3085Special 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3085Special 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
    • A61F2002/30858Threads interrupted by grooves or sidewalls, e.g. flat sidewalls
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/30767Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3085Special 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
    • A61F2002/30861Special 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2002/3241Joints for the hip having a ring, e.g. for locking the femoral head into the acetabular cup
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • A61F2002/3401Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A61F2002/3403Polar aperture
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/32Joints for the hip
    • A61F2/34Acetabular cups
    • A61F2002/345Acetabular 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/46Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2002/4688Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor having operating or control means
    • A61F2002/4696Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor having operating or control means optical
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2250/00Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0014Special 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
    • A61F2250/0026Special 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

Happel, Martin Wilhelm, Dr. Dr., 6072 Dreieich
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 Huftgelenkpfarme mit Gewinde, diese Nachteile zu vermeiden. Zu diesem Zweck vird 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.a. 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 Huftgelenkpfannen- 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 t Wenn nach längerem Gebrauch infolge der Abnutzung ein neuer Lagereinsatz erforderlich ist, braucht nur dieser ausgetauscht zu werden, während das Implaritatlager erhalten bleibt.
Die Erfindung wird in folgendem anhand von Ausführungsbeispielen näher erläutert, aus denen sich weitere wichtige Merkmale ergeben.
&igr; · · &igr;
I · I
T<
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 I
vergrößert den Gewinde- Querschnitt von Fig.1; Fig.4
schematisch teilweise den Querschnitt des Hüftpfannen- Implantates mit Lagereinsatz und dessen Befestigung.
Fig.iund 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 Möglichkeit 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 Einschraub- \ Vorganges 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 Lagereinsatzes 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 dasE. selbstschneidende Gewinde, in die Knochen einwächs'C 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 (11) 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.

Claims (1)

  1. In den Knochen einschraubbare Schalen für eine Hüftgelenkpfarne, dadurch gekennzeichnet, daß das spiralartig um die Längsachse angeordnete Gewinde eine konische äussere Form hat und einen breitflächigen ßewindegrund, der mit einer Oberflächenstruktur versehen ist.
    Schalen .uach Anspruch 1, dadurch gekennzeichnet,daß deren äussere Gewindebegrenzung aus verschieden geneigten Konen besteht.
    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 d±e Gewindespitzen über den Aussendurchmesser des Gewindes hinausragt.
DE8601752U 1986-01-24 1986-01-24 Hüftgelenkpfannen-Implantat mit selbstschneidendem Gewinde zur zementlosen Verankerung Expired DE8601752U1 (de)

Priority Applications (2)

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

Applications Claiming Priority (2)

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

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DE8601752U1 true DE8601752U1 (de) 1987-10-08

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

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DE19863602081 Ceased DE3602081A1 (de) 1986-01-24 1986-01-24 Hueftgelenkpfannen- implantat mit selbstschneidendem gewinde zur zementlosen verankerung

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Cited By (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
DE19654106A1 (de) * 1996-12-23 1998-07-02 Man Ceramics Gmbh Mehrteiliges Implantat
DE19612648C2 (de) * 1996-03-29 2001-12-06 Dietmar A Kumm Halterungssysteme für Hüftpfannen-Endoprothesen

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CA1290099C (en) * 1986-01-21 1991-10-08 Thomas H. Mallory Porous-coated artificial joints
CH672587A5 (de) * 1987-07-09 1989-12-15 Sulzer Ag
DE3804310C1 (de) * 1988-02-09 1989-07-06 Mecron Medizinische Produkte Gmbh, 1000 Berlin, De
FR2668923B1 (fr) * 1990-11-13 1997-11-21 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
EP0640325B1 (de) * 1993-08-30 1998-07-15 Sulzer Orthopädie 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
SE9304281D0 (sv) * 1993-12-23 1993-12-23 Astra Ab Cup
FR2735355B1 (fr) * 1995-04-05 1997-12-19 Lefoll Gerard Implant cotyloidien a centre de rotation optimise
FR2733409B1 (fr) * 1995-04-27 1997-10-24 Howmedica France Cotyle pour prothese de hanche
DE19520468C1 (de) * 1995-06-03 1996-11-28 Werner Scholz Künstliche Hüftgelenkpfanne
FR2793674B1 (fr) * 1999-05-19 2001-10-19 Olivier Himmer Implant cotyloidien medialise et a noyau mobile
DE102004057709A1 (de) * 2004-11-09 2006-06-08 Hörmansdörfer, Gerd Selbstschneidender Einschraubkörper
DE102004053944A1 (de) 2004-11-09 2006-05-11 Hörmansdörfer, Gerd Einschraubkörper mit sich änderndem Gewindeprofil und Verfahren zu dessen Herstellung
CN103202736B (zh) 2006-03-20 2016-06-15 史密夫和内修有限公司 用于多种支承材料的髋臼杯组件

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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 (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

Also Published As

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