DE1912630B2 - HIP PROSTHESIS - Google Patents

HIP PROSTHESIS

Info

Publication number
DE1912630B2
DE1912630B2 DE19691912630 DE1912630A DE1912630B2 DE 1912630 B2 DE1912630 B2 DE 1912630B2 DE 19691912630 DE19691912630 DE 19691912630 DE 1912630 A DE1912630 A DE 1912630A DE 1912630 B2 DE1912630 B2 DE 1912630B2
Authority
DE
Germany
Prior art keywords
pin
head
joint
cavity
joint head
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.)
Granted
Application number
DE19691912630
Other languages
German (de)
Other versions
DE1912630C3 (en
DE1912630A1 (en
Inventor
Die Anmelder Sind
Original Assignee
Huggler, Arnold Heinrich, Dr med , Chur, Weber, Bernhard Georg, Dr med, St Gallen, (Schweiz)
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 Huggler, Arnold Heinrich, Dr med , Chur, Weber, Bernhard Georg, Dr med, St Gallen, (Schweiz) filed Critical Huggler, Arnold Heinrich, Dr med , Chur, Weber, Bernhard Georg, Dr med, St Gallen, (Schweiz)
Publication of DE1912630A1 publication Critical patent/DE1912630A1/en
Publication of DE1912630B2 publication Critical patent/DE1912630B2/en
Application granted granted Critical
Publication of DE1912630C3 publication Critical patent/DE1912630C3/en
Expired legal-status Critical Current

Links

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
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • 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
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • 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
    • A61F2002/30235—Three-dimensional shapes cylindrical tubular, e.g. sleeves
    • 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
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
    • 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
    • A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/30673—Lubricating means, e.g. synovial pocket
    • 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
    • A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3611—Heads or epiphyseal parts of femur
    • A61F2002/3621—Heads or epiphyseal parts of femur pierced with a longitudinal bore
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/365—Connections of heads to necks
    • 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
    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3652—Connections of necks to shafts
    • 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
    • A61F2/3662—Femoral shafts
    • A61F2002/3678—Geometrical features
    • A61F2002/368—Geometrical features with lateral apertures, bores, holes or openings, e.g. for reducing the mass, for receiving fixation screws or for communicating with the inside of a hollow shaft
    • 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
    • A61F2002/4619—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 for extraction
    • 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
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • 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
    • 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
    • A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

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

Die Hi'ftgelenk-Prothese besteht aus der Kugel-The hip joint prosthesis consists of the ball

s5 pfanne 1, die beispielsweise mit Methylmethacrylat in den Beckenknochen einzementiert ν rd, dem Kugel-s5 pan 1, for example with methyl methacrylate in cemented the pelvic bone ν rd, the spherical

Die Erfindung betrifft eine Hüftgelenk-Prothese, gelenkkopf 5 und dem Prothesenschaft 9. DieThe invention relates to a hip joint prosthesis, joint head 5 and the prosthesis shaft 9. The

bei der ein im Oberschenkelknochen zu befestigender Pfanne 1 hat die Form einer dünnen, durch Rippen 2in which a socket 1 to be fastened in the thigh bone has the shape of a thin, ribbed 2

Schaft einen zylindrischen Zapfen trägt, auf den ein versteiften, nahezu halbkugelförmigen Kalotte. DieShaft carries a cylindrical pin on which a stiffened, almost hemispherical dome. the

mit einem hohlzylindrischen Ausatz versehener ku- 30 Rippen 2 dienen zusammen mit dem randartigtn An-ku- 30 ribs 2 provided with a hollow cylindrical recess, together with the edge-like an

gelförmiger Gelenkkopf aufgeschoben ist, wobei der satz 3 dazu, die mechanische Stabilität ihrer sphän-gel-shaped joint head is pushed on, with sentence 3 to the mechanical stability of their spherical

Gelenkkopf in Achsrichtung verschiebbar und um sehen Innenfläche 4 gegen Verziehen und elastischeArticulated head displaceable in the axial direction and around see inner surface 4 against warping and elastic

dessen Achse drehbar gelagert ist, wobei ferner der Verformung zu erhöhen und eine solide Verankerungwhose axis is rotatably mounted, further increasing the deformation and a solid anchoring

Zapfen, der Schaft und eine gegebenenfalls im Bek- im Kunststoffzement zu gewährleisten. Ihre Innen-To ensure tenons, the shaft and, if necessary, in the plastic cement. Your interior

kenknochen befestigte Kugelpfanne aus einer Metall- 35 fläche 4 nimmt den kugelförmigen Gelenkkopf 5 auf,Ball socket attached to the bone and made of a metal surface 4 accommodates the spherical joint head 5,

legierung bestehen, während der Geleckkopf aus der in dem gezeigten Beispiel mit einem hohlzylindri-alloy, while the Geleckkopf consists of the in the example shown with a hollow cylindrical

Kunststoff gefertigt ist. sehen Ansatz 6 aus einem Stück besteht und einenPlastic is made. see approach 6 consists of one piece and one

Eines der wesentlichen Probleme bei der Anwen- etwa 0,1 bis 0,3 mm kleineren Radius als die Innendung von Hüftgelenk-Prothesen besteht darin, zwi- fläche 4 besitzt.One of the main problems with the application- about 0.1 to 0.3 mm smaller radius than the inner end of hip joint prostheses is to have two areas.

sehen relativ zueinander bewegten Flächen derartiger 40 In dem Ansatz 6 und dem Gelenkkopf 5 ist eine Prothesen — also in erster Linie zwischen den Ge- zylindrische Ausnehmung 7 ausgebohrt, die den Zaplenkkopf und die Gelenkpfanne, insbesondere wenn fen 8 des im Oberschenkel zu befestigenden Schafdiese ebenfalls prothetisch, d.h. aus Metall oder tes9 aufnimmt. Die Tiefe α der Ausnehmung? und Kunststoff, gefertigt ist — in ausreichendem Maße die Länge b des Zapfens 8 sind so aufeinander abge-Körperflüssigkeit als Schmiermittel zu bringen. Aus 45 stimmt, daß im unbelasteten, zusammengebauten Zudem britischen Patent 1071450 ist eine Hüftgelenk- stand (Fig.2) und auch bei normalen Belastungen Prothese der genannten Art bekannt. Bei derartigen ein geringes Spiel 10 von einigen hundertstel Milli-Prothesen mit beweglich gelagertem Gelenkkopf ist metern zwischen der ringartigen Endfläche 16 des Andas Problem der Schmierung im besonderen Maße satzes 6 und einer entsprechenden Gegenfläche 17 gegeben, da sie gegenüber der anderen Konstruktio- 50 des Schaftes 9, die den Zapfen 8 randartig umgibt, nen mit auf dem Schaft fest angebrachtem Gelenk- bleibt. Der Kugelkopf 5 ruht daher normalerweise kopf zusätzlich relativ zueinander bewegte Flächen nur auf der Stirnfläche 11 der Ausnehmung? und zwischen dem Zapfen des Schaftes und der Ausneh- der entsprechenden Stirnfläche 12 des Zapfens 8. Bei mung des Kugelkopfes zxdweisen. Der Erfindung extremen Stoßbelastungen wird das Spiel 10 durch liegt daher die Aufgabe zugrunde, bei Hüftgelenk- 55 die Elastizität des Kugelkopfes 5 überwunden, und Prothesen der genannten Art eine verbesserte der Gelenkkopf 5 und sein Ansatz 6 stützen sich zu-Schmierung zwischen relativ zueinander bewegten sätzlich auf der Gegenfläche 17 des Schaftes 9 ab.
Flächen zu erreichen, d. h. die Schmierung sowohl In Achsrichtung der Ausnehmung 7 ist der Kugelzwischen dem Gelenkkopf und der zugehörigen Ge- kopf 5 erfindungsgemäß bis zu seiner als Gleitfläche lcnkpfanne als auch zwischen dem Gelenkkopf und 60 dienenden Oberfläche 13 durchbohrt. Der so entstedem ihn tragenden Zapfen zu verbessern. hende Kanal 14 dient als Ansaugkanal für den in dersee relatively moving surfaces of such 40. In the extension 6 and the joint head 5 is a prosthesis - so primarily drilled out between the cylindrical recess 7, which also the joint head and the socket, especially if fen 8 of the sheep to be fastened in the thigh prosthetic, ie made of metal or tes9. The depth α of the recess? and plastic, is made - to a sufficient extent the length b of the pin 8 are to be brought together as a lubricant body fluid. From 45 it is true that in the unloaded, assembled British patent 1071450, a hip joint stand (FIG. 2) and a prosthesis of the type mentioned are known even under normal loads. With such a small play 10 of a few hundredths of a milli-prosthesis with a movably mounted joint head, meters between the ring-like end surface 16 of the Andas problem of lubrication in particular set 6 and a corresponding counter surface 17 is given, since it is opposite to the other construction 50 of the shaft 9, which surrounds the pin 8 like an edge, remains with the joint firmly attached to the shaft. The spherical head 5 therefore normally rests head only on the end face 11 of the recess? and between the pin of the shaft and the recess of the corresponding end face 12 of the pin 8. In the case of the ball head zxd point. The invention undergoes extreme shock loads through the game 10 is therefore based on the task of overcoming the elasticity of the ball head 5 in the hip joint 55, and prostheses of the type mentioned provide an improved joint head 5 and its attachment 6 are additionally based on lubrication between relatively moving ones on the opposite surface 17 of the shaft 9.
To achieve surfaces, ie the lubrication both in the axial direction of the recess 7, the ball between the joint head and the associated head 5 is pierced according to the invention up to its surface 13 serving as a sliding surface and between the joint head and 60. To improve the tenon bearing it. Current channel 14 serves as an intake channel for the in the

Diese Aufgabe wird erfindungsgemäß dadurch ge- beschriebenen Art als Kolbenpumpe wirkenden Zap-According to the invention, this object is achieved by the type of piston acting as a piston pump

lösl, daß der kugelförmige Gelenkkopf eine in den fen 8. Durch diesen Kanal 14 saugt der Zapfen 8 beiLösl that the spherical joint head is one in the fen 8. Through this channel 14, the pin 8 sucks

Hohlraum für den Zapfen führende Bohrung besitzt. Entlastung des Gelenkes Körperflüssigkeit zwischenHas cavity for the pin leading hole. Relief of the joint body fluid between

Die Wirkung der erfindungsgemäßen Maßnahme be- 65 die Flächen 4 und 13 hindurch in die Ausnehmung 7The effect of the measure according to the invention moves 65 through the surfaces 4 and 13 into the recess 7

ruht darauf, daß beim Gleiten des Zapfens im Ge- hinein. Dadurch wird eine sehr gute Benetzung derrests on the fact that when the tenon slides into it. This ensures a very good wetting of the

lenkkopf infolge der wechselnden Ent- und BeIa- aufeinandergleitcnden Flächen 4, 13 bzw. 11, 12 er-Steering head as a result of the alternating disengagement and when surfaces 4, 13 and 11, 12 slide on one another

stungen Pumpenwirkungen entstehen, da der Zapfen reicht und eine gute Schmierung gewährleistet.Stungen pump effects arise because the pin is sufficient and ensures good lubrication.

Die spiralartige Rinne 15 in den seitlichen Flanken der Ausnehmung? dient eier Schmierung der Mantelfläche des zylindrischen Zapfens 8. Die als Schmiermittel wirkende Körperflüssigkeit kann dabei beim Belastungshub des Zapfens 8 aus dem Hohlraum der Ausnehmung? oder auch durch den Spalt 10 in die Spirale 15 eindringen. Um dea Zugang der Körperflüssigkeit zu der Spirale 15 von der Unterseite her zu erleichtern, können entweder die Endfläche 16 des Ansatzes 6 oder die Gegenfläche des Schaftes 9 mit kleineren radialen Nuten versehen werden, was nicht besonders dargestellt ist. Diese Nuten sind besonders vorteilhaft, wenn aus bestimmten Gründen sich der Kugelkopf 5 auch bei normaler Belastung nicht auf den Stirnflächen 11 und 12, sondern auf den Randflächen 16 und 17 abstützt.The spiral-like groove 15 in the side flanks of the recess? is used for lubrication of the The outer surface of the cylindrical pin 8. The body fluid acting as a lubricant can thereby during the loading stroke of the pin 8 from the cavity of the recess? or through the gap 10 penetrate into the spiral 15. To allow the body fluid to access the coil 15 from the bottom To facilitate forth, either the end surface 16 of the projection 6 or the opposite surface of the Shank 9 are provided with smaller radial grooves, which is not particularly shown. These Grooves are particularly advantageous if, for certain reasons, the ball head 5 also with normal Load is not supported on the end faces 11 and 12, but on the edge surfaces 16 and 17.

Von der Randfläche 17 aus verläuft der Schaft 9 in leicht gebogener Form, sich allseitig verjüngend, in einem säbelförmigen Stiel aus, der in den Oberschenkelknochen eingeführt und dort mit Methylmethacrylat einzementiert oder verkittet wird. Um einen guten Sitz des Stieles im Knochen zu gewährleisten, soll der Stiel möglichst bis zu dem kragenartigen Ansatz 18, der auf seiner dem Knochen abgewandten Seite die Gegenfläche 17 bildet, in den Knochen eingeführt werden.The shaft 9 extends from the edge surface 17 in a slightly curved shape, tapering on all sides, in a saber-shaped stem that extends into the thigh bone introduced and cemented or cemented there with methyl methacrylate. To one To ensure a good fit of the stem in the bone, the stem should as far as possible up to the collar-like attachment 18, which forms the mating surface 17 on its side facing away from the bone, is introduced into the bone will.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (2)

1 2 und der zugehörige Hohlraum eine Art Kolben-Patentansprüche: pumpe darstellen. Auf diese Weise saugt der Zapfen beim Entlasten Körperflüssigkeit durch den Spalt1 2 and the associated cavity a kind of piston patent claims: represent a pump. In this way, the pin sucks body fluid through the gap when relieving the load 1. Hüftgelenk-Prothese, bei der ein im Ober- zwischen Gelenkpfanne und Gelenkkopf hindurch schenkelknochen zu befestigender Schaft einen zy- 5 bis in den Hohlraum ein und preßt sie bei der anlindrischen Zapfen trägt, auf den ein mit einem schließenden Belastung wieder zwischen die sphärihohlzylindrischen Ansatz versehener, kugelförmi- sehen Gleitflächen zwischen Pfanne und Kugel, ger Gelenkkopf aufgeschoben ist, wobei der Ge- Gleichzeitig wird Körperflüssigkeit bei der Belastung lenkkopf in Achsrichtung des Zapfens verschieb- zwischen die zylindrische Mantelfläche des Hohlraubar und um dessen Achse drehbar gelagert ist, io mes und den Zapfen eingesaugt. Darüber hinaus läßt wobei ferner der Zapfen, der Schaft und eine ge- sich die Schmierung der Mantelfläche des Zapfens gebenenfalls im Beckenknochen befestigte Kugel- gegenüber dem Hohlraum verbessern, wenn in die pfanne aus einer Metallegierung bestehen, wäh- den Zapfen umgebende Innenfläche des Gelenkkopfrend der Gelenkkopf aus Kunststoff gefertigt ist, körpers eine Spirale eingeschnitten ist.
dadurch gekennzeichnet, daß der ku- 15 Die Erfindung wird in nachstehender Beschreigelförmige Gelenkkopf (S) eine in den Hohlraum bung eines Auführungsbeispiels im Zusammenhang für den Zapfen (8) führende Bohrung (14) be- mit der Zeichnung näher erläutert. Γη der Zeichnung sitzt. zeigt1. Hip joint prosthesis, in which a shaft to be fastened in the upper between the joint socket and the joint head through the thigh bone carries a cylindrical 5 into the cavity and presses it in the anlindrischen pin, on the one with a closing load again between the spherical hollow cylindrical Approach provided, spherical sliding surfaces between the socket and ball, ger joint head is pushed on, whereby the body fluid is at the same time body fluid is displaced under the load steering head in the axial direction of the pin between the cylindrical surface of the hollow screw and rotatably mounted about its axis, io mes and sucked in the peg. In addition, the pin, the shaft and a ball, which may be fastened in the pelvic bone, can improve the lubrication of the lateral surface of the pin compared to the cavity if the socket is made of a metal alloy, while the pin surrounding the inner surface of the articulated head end of the The joint head is made of plastic and has a spiral cut into its body.
characterized in that the joint head (S) below describes a bore (14) leading into the cavity of an embodiment in connection with the pin (8) in connection with the drawing. Γη of the drawing sits. shows 2. Prothese nach Anspruch 1, dadurch gekenn- F i g. 1 die erfindungsgemäße Prothese, wobei die zeichnet, daß in die den Zapfen (8) umgebende ao zugehörigen Teile auseinandergezogen und zum Teil Innenfläche des Gelenkkopfkörpers (5,6) eine im Schnitt dargestellt sind und2. Prosthesis according to claim 1, characterized in that F i g. 1 the prosthesis according to the invention, the draws that in the pin (8) surrounding ao associated parts pulled apart and in part Inner surface of the joint head body (5,6) are shown in section and Spirale (15) eingeschnitten ist. F i g. 2 die gleiche Prothese im zusammengesetzten Zustand.Spiral (15) is incised. F i g. 2 the same prosthesis in the assembled State.
DE1912630A 1968-04-25 1969-03-13 Hip joint prosthesis Expired DE1912630C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH619768A CH490077A (en) 1968-04-25 1968-04-25 Hip joint prosthesis

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DE1912630B2 true DE1912630B2 (en) 1973-03-08
DE1912630C3 DE1912630C3 (en) 1973-10-04

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US (1) US3658056A (en)
AT (1) AT284329B (en)
CH (1) CH490077A (en)
DE (1) DE1912630C3 (en)
ES (1) ES359759A1 (en)
FR (1) FR2006925A1 (en)
GB (1) GB1264857A (en)
SE (1) SE363233B (en)

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DE2742464A1 (en) * 1977-09-21 1979-03-22 Pfaudler Werke Ag Internal body joint prosthesis - has socket sliding on ball on circular line of socket of larger radius
DE3046553A1 (en) * 1980-12-10 1982-07-15 Feldmühle AG, 4000 Düsseldorf Hip joint socket
DE3343863A1 (en) * 1983-12-03 1985-06-13 Jürgen Prof. Dr.med. 3000 Hannover Frölich Joint endoprosthesis

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DE2627569A1 (en) * 1976-06-19 1977-12-22 Friedrichsfeld Gmbh Prosthesis for head of femur - has ridge at shoulder and groove reaching to lower end
DE2742464A1 (en) * 1977-09-21 1979-03-22 Pfaudler Werke Ag Internal body joint prosthesis - has socket sliding on ball on circular line of socket of larger radius
DE3046553A1 (en) * 1980-12-10 1982-07-15 Feldmühle AG, 4000 Düsseldorf Hip joint socket
DE3343863A1 (en) * 1983-12-03 1985-06-13 Jürgen Prof. Dr.med. 3000 Hannover Frölich Joint endoprosthesis

Also Published As

Publication number Publication date
AT284329B (en) 1970-09-10
DE1912630C3 (en) 1973-10-04
DE1912630A1 (en) 1969-10-30
FR2006925A1 (en) 1970-01-02
US3658056A (en) 1972-04-25
ES359759A1 (en) 1970-07-01
CH490077A (en) 1970-05-15
GB1264857A (en) 1972-02-23
SE363233B (en) 1974-01-14

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