DE2314708C3 - Joint socket for an artificial hip joint - Google Patents

Joint socket for an artificial hip joint

Info

Publication number
DE2314708C3
DE2314708C3 DE2314708A DE2314708A DE2314708C3 DE 2314708 C3 DE2314708 C3 DE 2314708C3 DE 2314708 A DE2314708 A DE 2314708A DE 2314708 A DE2314708 A DE 2314708A DE 2314708 C3 DE2314708 C3 DE 2314708C3
Authority
DE
Germany
Prior art keywords
joint socket
outer shell
joint
socket according
support flange
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.)
Expired
Application number
DE2314708A
Other languages
German (de)
Other versions
DE2314708A1 (en
DE2314708B2 (en
Inventor
Joachim Prof. Dr.Med. 6200 Wiesbaden Eichler
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.)
Protek AG
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2314708A priority Critical patent/DE2314708C3/en
Priority to GB1215974A priority patent/GB1460813A/en
Priority to AT239974A priority patent/AT336175B/en
Priority to JP49032432A priority patent/JPS5041379A/ja
Priority to US454680A priority patent/US3918102A/en
Publication of DE2314708A1 publication Critical patent/DE2314708A1/en
Publication of DE2314708B2 publication Critical patent/DE2314708B2/en
Application granted granted Critical
Publication of DE2314708C3 publication Critical patent/DE2314708C3/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
    • A61F2/34—Acetabular cups
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
    • A61B17/8066—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones for pelvic reconstruction
    • 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
    • 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
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30136—Rounded shapes, e.g. with rounded corners undulated or wavy, e.g. serpentine-shaped or zigzag-shaped
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • 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
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    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30153—Convex polygonal shapes rectangular
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30156—Convex polygonal shapes triangular
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30158—Convex polygonal shapes trapezoidal
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
    • 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
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • A61F2002/30784—Plurality of holes
    • A61F2002/30787—Plurality of holes inclined obliquely with respect to each other
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    • 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
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    • 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
    • A61F2002/3429—Acetabular cups with an integral peripheral collar or flange, e.g. oriented away from the shell centre line
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    • 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
    • A61F2002/3479—Cage-like shells, e.g. hemispherical outer shells made of meridian strips or wires connected to an equatorial strip, rim or wire
    • A—HUMAN NECESSITIES
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    • 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
    • A61F2002/348—Additional features
    • A61F2002/3487—Partial acetabular cups, e.g. strips replacing only partially the natural acetabular cartilage
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    • 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
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    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
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    • 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
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    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
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    • A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
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    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A61F2230/0023—Angular shapes triangular
    • 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
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A61F2230/0026—Angular shapes trapezoidal
    • 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

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 Erfindung betrifft eine Gelenkpfanne für ein künstliches Hüftgelenk aus zwei ineinander greifenden einzementierbaren halbkugelförmigen Schalen, von denen die äußere mit Fixierungsmitteln versehen ist und einen sie umgebenden Auflageflansch besitzt.The invention relates to a joint socket for an artificial hip joint consisting of two interlocking ones cementable hemispherical shells, the outer of which is provided with fixation means and has a supporting flange surrounding it.

Aus »Der Chirurg«. Heft 6/1971, Seiten 285 und 286, lind der deutschen Gebrauchsmusterschrift 7104 212 lind zweischaligc halbkügclförmige Gelenkpfannen ohne Auflageflansch bekannt Derartige Gelenkpfannen dringen im Laufe der Zeit, insbesondere bei Patienten mit Protrusio acetabuli vielfach tiefer in das kleine ■ecken ein, da infolge pathologischer Vorgänge am knöchernen Pfannengrund oft nur Weichteilgewebe Vorliegt,From "The Surgeon". Issue 6/1971, pages 285 and 286, lind of the German utility model 7104 212 and two-shell, hemispherical joint sockets Known without a support flange Such joint sockets penetrate over time, especially in patients with protrusio acetabuli often deeper into the small corner, since as a result of pathological processes on the Often only soft tissue is present at the base of the acetabulum,

Aus der DE-OS 20 J9 731 und der FR-PS 1047 640 sind Gelenkpfannen mit einem sie umgebenden Auflageflansch bekannt, welcher sich auf dem knöchernen Pfanneneingang mit erhöhter Stabilität abstützt. In Fig. 3 der FR-PS ist in die äußere Schale mit dem Auflageflansch zur Verminderung der Reibung ein Belag aus einem anderen Kunststoffmaterial als dem des Hüftkopfes eingelegt, und in Fig. 6 der DE-OS besteht die Gelenkpfanne aus zwei ineinandergepaßten Schalen. In beiden Fällen sind die beiden Schalen mit einem Klemmring koaxial aneinander befestigt. Demzufolge weicht beim Einsetzen solcher Gelenkpfannen die Lage des Hüftkopfes bei vielen Patienten von der natürlichen Hüftkopflage ab, was zu Verrenkungen und in Extremfällen zu einem Herausspringen des Hüftkopfes aus der Gelenkpfanne führen kann.From DE-OS 20 J9 731 and FR-PS 1047 640 joint sockets are known with a supporting flange surrounding them, which is located on the bony Supports the socket entrance with increased stability. In Fig. 3 of the FR-PS is in the outer shell with the Support flange to reduce friction a covering made of a different plastic material than that of the The femoral head is inserted, and in Fig. 6 of the DE-OS the joint socket consists of two shells fitted into one another. In both cases, the two shells are fastened to one another coaxially with a clamping ring. As a result When inserting such joint sockets, the position of the femoral head deviates from the natural one in many patients Femoral head position, which leads to dislocations and, in extreme cases, to jumping out of the femoral head can lead out of the joint socket.

Die der Erfindung zugrundeliegende Aufgabe besteht nun darin, eine Gelenkpfanne für künstliche Hüftgelenke zu bekommen, die einerseits ein Tiefereindringen der Gelenkpfanne unter Ausnutzung der erhöhten Stabilität des Backenknochens am Pfanneneingang verhindert und andererseits ein Verrenken des künstlichen Gelenkes vermeidet.The object on which the invention is based now consists in developing a joint socket for artificial hip joints to get, on the one hand, a deeper penetration of the joint socket, taking advantage of the increased stability of the cheekbones at the socket entrance and on the other hand avoids a dislocation of the artificial joint.

Dies wird erfindungsgemäß bei den eingangs genannten Gelenkpfannen dadurch erreicht, daß die Fixierungsmittel der äußeren Schale Dur.-hbrüche sind und die innere Schaie in der äußeren Schale durch Verdrehen einstellbar ist. Der Innendurchmesser der äußeren Schale kann etwas größer sein, vorzugsweise 1—2 mm. als der \ußendurchmesser der äußeren Schale. Ks genügt, wenn die Form der beiden Schalen annähernd halbkugelförmig ist. Der Flansch ist 8—12 mm breit. Auch der Auflageflansch kann mit Durchbrüchen versehen sein. Die Durchbrüche der äußeren Schale können derart ausgebildet sein, daß zwischen ihnen pfeilförmige Krallen liegen, die vom Auflageflansch unter Freilassung einer zentralen Öffnung ausgehen. Zwischen den fifeilförmigen Krallen können auch noch schmale Stege an^rurdnct sein, die im Mittelpunkt zusammentreffen. Stattdessen können die Durchbrüche auch eine Anzahl von schmalen Stegen begrenzen, die im Mittelpunkt zusammentreffen. Die schmalen Stege können an ihren Rändern mit Wellen oder Haken versehen sein.This is achieved according to the invention in the joint sockets mentioned at the outset in that the Fixing means of the outer shell are major and the inner shell in the outer shell is adjustable by twisting. The inside diameter of the outer shell can be slightly larger, preferably 1-2 mm. than the \ outer diameter of the outer Peel. Ks is sufficient if the shape of the two shells is approximately hemispherical. The flange is 8-12 mm wide. The support flange can also be provided with openings. The breakthroughs of the outer shell can be designed such that arrow-shaped claws lie between them, from the Support flange leaving a central opening go out. Between the filiform claws there may also be narrow webs which meet in the center. Instead, the openings can also have a number of narrow webs limit that meet at the center. The narrow webs can have waves on their edges or hooks.

Die Krallen und/' ider die schmalen Stege können mit radialen Sicken versehen sein. Nach einer Ausführungsform sind am Flansch beispielsweise acht Krallen angeordnet, deren Spitzen 20—25 mm vom Auflageflansch entfernt sind. Nach einer anderen Ausführungs· form sind am Flansch beispielsweise drei Stege in gleichen Absländen sternförmig angeordnet, zwischen denen jeweils zwei Krallen ausgebildet sind.The claws and / 'ider the narrow webs can with be provided with radial beads. According to one embodiment, there are, for example, eight claws on the flange arranged, the tips of which are 20-25 mm away from the support flange. According to another execution form, for example, three webs are arranged in a star shape in the same Absländen on the flange, between each of which has two claws.

Zwischen Auflageflansch und Mittelpunkt kann auch ein ringförmiger Verbindungssteg in der äußeren Schale ausgebildet sein, der die Zwischenräume zwischen den radialen Stegen oder den Spitzen der Krallen überbrückt.An annular connecting web can also be located in the outer shell between the support flange and the center point be formed, the spaces between the radial webs or the tips of the claws bridged.

Die äußere Schale besteht gewöhnlich aus einem chemisch beständigen und körperverträglichen starken Metallblech, vorzugsweise aus dem gleichen Material wie der Hüftkopf, Die innere Schale kann aus einem körperverträglichen Kunststoff bestehen. The outer shell usually consists of a chemically resistant and biocompatible strong metal sheet, preferably of the same material as the femoral head. The inner shell can consist of a biocompatible plastic.

In der Zeichnung bedeutetIn the drawing means

F i g. I eine Frontansicht eines Hüftskelctts mit einem künstlichen Hüftgelenk,F i g. I a front view of a hip with an artificial hip joint,

F i g. 2 eine perspektivische Darstellung der Einzelteile des künstlichen Hüftgelenks,F i g. 2 a perspective view of the individual parts of the artificial hip joint,

Pig.3 eine perspektivische Darstellung der beidenPig. 3 a perspective view of the two

ineinander eingesetzten Schalen der Gelenkpfanne,interlocking shells of the joint socket,

Fig.4 eine Ausführungsform der äußeren Schale, teilweise geschnitten, in Seitenansicht,4 shows an embodiment of the outer shell, partially cut, in side view,

Fig. 5 eine Draufsicht auf die äußere Schale gemüB Fig. 4,Fig. 5 is a plan view of the outer shell according to FIG Fig. 4,

Fig.6 eine andere AusfQhrungsform der äußeren Schale, senkrecht geschnitten,6 shows another embodiment of the outer Shell, cut vertically,

Fig. 7 eine Draufsicht auf die äußere Schale gemäß Fig. 6,FIG. 7 is a plan view of the outer shell according to FIG Fig. 6,

Fig.8 noch eine weitere Ausführungsform der äußeren Schale in Seitenansicht,8 still another embodiment of the outer shell in side view,

F i g. 9 eine Draufsicht auf die äußere Schale gemäß Fig. 8,F i g. 9 is a plan view of the outer shell according to FIG. 8;

Fig. 10 eine Draufsicht auf einen Ausschnitt aus der äußeren Schale zur Darstellung eines Details.FIG. 10 is a plan view of a detail from FIG outer shell to represent a detail.

In Fig. 1 ist die Frontansicht eines Beckens mit den Hüftgelenken dargestellt. Auf der linken Seile ist ein künstliches Hüftgelenk zu erkennen. Dieses besteht aus der F.ndoprothese 1, die in den Oberschenkelknochen 4 nach Entfernen des oberen Teils d»eses Knochens eingesetzt ist, und der in die knöcherne Gelenkpfanne des Beckens 5 eingesetzten Gelenkpfanne nach der Erfindung mit einer äußeren Schale 3 und einer inneren Schale 2, die den Sitz der Endoprothese bildet.In Fig. 1 is the front view of a basin with the Hip joints shown. An artificial hip joint can be seen on the left rope. This consists of the endoprosthesis 1, which is in the thigh bone 4 after removal of the upper part of this bone is inserted, and that in the bony socket of the pelvis 5 inserted joint socket according to the invention with an outer shell 3 and an inner one Shell 2, which forms the seat of the endoprosthesis.

Die Endoprothese besteht aus dem Stieltcil 6, dem Halsteil 7 und dem Kopfteil 8. Sie besteht allgemein einstückig aus einem körperverträglichen Metall. Das Kopfteil 8 hat die Form einer Kugel und ist in die innere Schale 9 eingesetzt, die im allgemeinen aus einem körperverträglichen Kunststoff besteht und an ihrer Außenfläche mit verschiedenen Vertiefungen versehen ist, so daß sie sich besser mit Knochenzement verbindetThe endoprosthesis consists of the Stieltcil 6, the Neck part 7 and the head part 8. It is generally made in one piece from a body-compatible metal. That Head part 8 has the shape of a ball and is inserted into the inner shell 9, which generally consists of a Biocompatible plastic is made and provided with various depressions on its outer surface is so that it bonds better with bone cement

Die äußere Schale 3 besteht aus einem in besonderer Form ausgebildeten halbkugelförmigen Abschnitt 10, der von einem Auflageflansch 11 umgeben ist.The outer shell 3 consists of a specially designed hemispherical section 10, which is surrounded by a support flange 11.

Der halbkugelförmige Abschnitt 10 ist mit Durchbrechungen versehen, und eine Ausführungsform ist, wie in den F i g. 2 und 3 dargestellt, derart ausgebildet, daß von dem ringförmigen Auflageflansch 11 pfeilförmige Krallen 13 ausgehen. Die Durchbrechungen sind oberhalb der Spitzen der Krallen 13 vollständig, und unmittelbar oberhalb des Auflageflansches Si sind die einzelnen, zwischen den Krauen 13 verlaufenden Ausläufer der Durchbrechungen verbreitert. Bei einem Innendurchmesser des Kugelabschnitts von beispielsweise etwa 5ttcm und einer Auflagellanschbreite von 8-12 mm sind die Krallen 13 von ihrem Ausgangspunkt am Auflageflansch 11 bis /.ui Spitze 20—25 mm lang.The hemispherical portion 10 is perforated, and one embodiment is as in FIG the F i g. 2 and 3 shown, designed such that of the annular support flange 11 is arrow-shaped Claws 13 go out. The openings are completely above the tips of the claws 13, and directly above the support flange Si are the individual ones running between the ridges 13 Extension of the perforations widened. With an inner diameter of the spherical section of, for example about 5 cm and a support flange width of 8-12 mm are the claws 13 from their starting point on the support flange 11 to /.ui tip 20-25 mm long.

Das Implantieren der Gelenkpfanne geschieht folgendermaßen : Nach Vorbereitung der Knochenpfanne im Becken 5 wird die äußere Schale 3 mit Knochenzement derart in die Knochenpfanne eingesetzt, daß sich der Auflageflansch 11 gegen das den Pfanneneingang am Becken umgebende Knochengewebe allseits fest anlegt, gegebenenfalls unter Zwischenlagerung von · · Knochenzement. Auch zumindest einige Teile des halbkugelformigen Abschnitts der äußeren Schale 3 legen sich, unter Zwischenlagerung von Knochenzement, gegen tragendes Knochengewebe in der Knochenpfanne des Beckens dar Nach dem Einsetzen der ··■ äußeren Schale wird die innere Schale 9 des künstlichen Hüftgelenks in die äußere Schale eingesetzt und kann dann unter Berücksichtigung der Neigung und der sogenannten Anietorsion, d. h. der Achseneinstellung in Sagittal- und Frontalebene, derart eingestellt werden, daß der in die innere Schale 9 eingesetzte künstliche Hüftkopf 8 annähernd denselben Schwenkmitlelpunkt einnimmt, den der natürliche Hüftkopf einnahm. Die innere Schale 9 wird in der ihr gegebenen eingestellten Lage in der äußeren Schale ebenfalls durch Knochenzement fixiert, wobei der Knochenzement durch die Durchbrüche der äußeren Schale hindurchgehtThe joint socket is implanted as follows: After preparing the bone socket in the Basin 5, the outer shell 3 with bone cement is inserted into the bone socket in such a way that the support flange 11 on all sides firmly against the bone tissue surrounding the socket entrance on the pelvis creates, if necessary with intermediate storage of · · bone cement. Also at least some parts of the hemispherical section of the outer shell 3 lie, with the intermediate storage of bone cement, against supporting bone tissue in the bone socket After inserting the outer shell, the inner shell 9 becomes the artificial Hip joint inserted into the outer shell and can then taking into account the inclination and the so-called anti-torsion, d. H. the axis setting in Sagittal and frontal planes are set so that the inserted into the inner shell 9 artificial Femoral head 8 occupies approximately the same pivot center point that occupied the natural femoral head. the inner shell 9 is also provided with bone cement in the set position given to it in the outer shell fixed, the bone cement passing through the openings in the outer shell

Insbesondere aus Fig. 1 ist zu erkennen, daß die Gelenkpfanne nach der Erfindung nicht im Laufe der Zeit tiefer in den Beckenknochen eingedrückt werden kann und daher nicht den Schwenkpunkt des künstlichen Hüftgelenks verlagert Es wird weiterhin verhindert, daß der Abstand zwischen dem kleinen und großen Rollhügel einerseits und der Beckeneingangsebene andererseits kleiner wird. Es kann keiv eingeschränkte Beweglichkeit und kein Verrenken des 'iüfigeienkes mehr auftreten.In particular from Fig. 1 it can be seen that the joint socket according to the invention is not in the course of Time can be pushed deeper into the pelvic bone and therefore not the pivot point of the artificial Hip joint displaced It is further prevented that the distance between the small and large Rolling hill on the one hand and the pool entrance level on the other hand becomes smaller. It cannot be restricted Mobility and no dislocation of the 'iüfigeienkes occur more.

In Fig.4 und 5 ist ein weiteres Ausführungsbeispiel der Gelenkpfanne dargestellt. Der Auflageflansch 11 ist mit Durrhbrüchen 14 in Form von gebohrten oder gestanzten Löchern versehen. Der von dem Auflageflansch ti umgebene halbkugelförmige Abschnitt 10 mit Durchbrüchen besteht aus Krallen 13 in der bereits im Zusammenhang mit dem ersten Ausfülirungsbeispiel beschriebenen Form sowie aus drei Stegen 15, die radial verlaufen und sich im Mittelpunkt treffen. Zwischen zwei Stegen 15 sind jeweils zwei Krallen 13 angeordnet. Die Stege sind in radialer Richtung mit Sicken 16 versehen. Diese Sicken dienen einerseits zur Versteifung der Stege und andererseits der zusätzlichen Halterung der inneren Schale 9 und Verankerung in dem umgebenden KnochenzementIn Fig.4 and 5 is another embodiment the socket shown. The support flange 11 is provided with Durrhbrufen 14 in the form of drilled or punched holes. The one from the support flange ti surrounded hemispherical section 10 with openings consists of claws 13 in the already in Connection with the first exemplary embodiment described shape and of three webs 15, which run radially and meet in the center. Between two webs 15 have two claws 13 each. The webs have beads 16 in the radial direction Mistake. These beads serve on the one hand to stiffen the webs and on the other hand the additional ones Holding the inner shell 9 and anchoring it in the surrounding bone cement

Allgemein ist der Innendurchmesser des halbki gelförmigen Abschnitts 10 mit Durchbrüchen der äußeren Schale 3 um ein bis zwei Millimeter größer als der Außaidurchmesser der inneren Schale 9, so daß zwischen den Krallen 13 oder Stegen 15 und der inneren Schale 9 noch genügend Raum für das Eindrücken von Knochenzement istGenerally, the inside diameter of the hemisphere is gel-shaped Section 10 with openings in the outer shell 3 is one to two millimeters larger than that Outside diameter of the inner shell 9, so that between the claws 13 or webs 15 and the inner Shell 9 still has enough space for the pressing in of bone cement

Eine weitere Ausführungsform nach den F i g. 6 und 7 besitzt lediglich Stege 15, die radial angeordnet sind und sternförmig im Mittelpunkt zusammenlaufen. Diese Stege können ebenfalls mit radialen Sicken 16 versehen sein. Nach einer Weiterbildung dieser Ausfühningsform entsprechend den Fig. 8 und 9 sind die Stege 15 in halber Höhe mit einem ringförmigen Verbindungssteg 17 versehen. Auch dieser kann mit einer Sicke versehen sein, w'i es können nach einer weiteren Abwandlung dieses Ausführungsbeispiels auch die inneren Teile der radialen Stege 15,die zwischen dem Verbindungssteg Ί7 und dem Mittelpunkt liegen, fortgelassen bein. Entsprechend Fig. 10 körnen die Stege 15 an ihren Kanten mit Wellen oder Haken versehen sein, die eine zusätzliche Verbesserung der verankerung im Knochenzement bewirken.Another embodiment according to FIGS. 6 and 7 only has webs 15 which are arranged radially and converge in a star shape in the center. These webs can also be provided with radial beads 16. According to a further development of this embodiment according to FIGS. 8 and 9, the webs 15 are provided with an annular connecting web 17 at half the height. This can also be provided with a bead, such as, according to a further modification of this exemplary embodiment, the inner parts of the radial webs 15, which lie between the connecting web 7 and the center point, can also be omitted. According to FIG. 10, the webs 15 can be provided with corrugations or hooks on their edges, which cause an additional improvement of the anchoring in the bone cement.

Hierzu 2 Blatt ZeichnungenFor this purpose 2 sheets of drawings

Claims (10)

Patentansprüche:Patent claims: 1. Gelenkpfanne für ein künstliches Hüftgelenk, bestehend aus zwei ineinander greifenden einzementierbaren halbkugelförmigen Schalen, von denen die äußere mit Fixierungsmitteln versehen ist und einen sie umgebenden Auflageflansch besitzt, dadurch gekennzeichnet, daß die Fixierungsmitiel der äußeren Schale (3) Durchbrüche sind und die innere Schale (2; 9) in der äußeren Schale (3) durch Verdrehen einstellbar ist.1. Joint socket for an artificial hip joint, consisting of two interlocking cementable hemispherical shells, the outer of which is provided with fixation means and has a supporting flange surrounding it, characterized in that the fixing means the outer shell (3) are openings and the inner shell (2; 9) in the outer shell (3) is adjustable by turning. 2. Gelenkpfanne nach Anspruch I, dadurch gekennzeichnet, daß der Innendurchmesser der äußeren Schale (3) etwas größer ist, vorzugsweise ! —2 mm, als der Außendurchmesser der inneren Schale (2; 9).2. joint socket according to claim I, characterized in that the inner diameter of the outer shell (3) is slightly larger, preferably! —2 mm, as the outer diameter of the inner Shell (2; 9). 3. Gelenkpfanne nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Auflageflansch (11) mit Durchbrüchen (14) versehen ist3. joint socket according to claim 1 or 2, characterized in that the support flange (11) with Breakthroughs (14) is provided 4. Gelenkpfanne nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Durchbrüche der äußeren Schale (3) pfeilförmige Krallen (13) begrenzen, die vom Auflageflansch (11) unter Freilassung einer zentralen Öffnung ausgehen.4. Joint socket according to one of claims 1 to 3, characterized in that the openings of the outer shell (3) arrow-shaped claws (13) limit the support flange (11) below Release a central opening to go out. 5. Gelenkpfanne nach Anspruch 4, dadurch gekennzeichnet, daß zwischen den pfeilförmigen Krallen (13) schmale Stege (15) angeordnet sind, die im Mittelpunkt zusammentreffen.5. joint socket according to claim 4, characterized in that between the arrow-shaped Claws (13) narrow webs (15) are arranged, the meet in the center. 6. Gelenkpfanne nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Durchbrüche der äußeren Schu'e eine Anzahl von schmalen Stegen (15) begrenzen, die im Mittelpunkt zusammentreffen. 6. joint socket according to one of claims 1 to 3, characterized in that the openings of the outer shoe a number of narrow webs (15) that meet at the center. 7. Gelenkpfanne nach Anspruch ό. dadurch gekennzeichnet, daß die schmalen Stege (15) an ihren Rändern mit Weilen oder (laken (18) versehen sind.7. joint socket according to claim ό. through this characterized in that the narrow webs (15) are provided on their edges with waves or (sheets (18) are. 8. Gelenkpfanne nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Krallen (13) und/oder die schmalen Stege (15) mit radialen Sicken (16) versehen sind.8. joint socket according to one of claims 1 to 7, characterized in that the claws (13) and / or the narrow webs (15) are provided with radial beads (16). 9. Gelenkpfanne nach Anspruch b, dadurch gekennzeichnet, daß zwischen Auflageflansch (11) und Mittelpunkt ein ringförmiger Verbindungssteg (17) in der äußeren Schale (3) ausgebildet ist.9. joint socket according to claim b, characterized in that between the support flange (11) and the center of an annular connecting web (17) is formed in the outer shell (3). 10. Gelenkpfanne nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß die Ränder der. Durchbrüche der äußeren Schale (3) und/oder des Auflageflansches (11) ganz oder teilweise nach außen gebogen sind.10. joint socket according to one of claims 1 to 9, characterized in that the edges of the. Breakthroughs in the outer shell (3) and / or in the support flange (11) in whole or in part are bent on the outside.
DE2314708A 1973-03-24 1973-03-24 Joint socket for an artificial hip joint Expired DE2314708C3 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE2314708A DE2314708C3 (en) 1973-03-24 1973-03-24 Joint socket for an artificial hip joint
GB1215974A GB1460813A (en) 1973-03-24 1974-03-19 Artificial hip joint
AT239974A AT336175B (en) 1973-03-24 1974-03-22 ARTIFICIAL HIP JOINT
JP49032432A JPS5041379A (en) 1973-03-24 1974-03-22
US454680A US3918102A (en) 1973-03-24 1974-03-25 Artificial hip joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2314708A DE2314708C3 (en) 1973-03-24 1973-03-24 Joint socket for an artificial hip joint

Publications (3)

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DE2314708A1 DE2314708A1 (en) 1974-10-03
DE2314708B2 DE2314708B2 (en) 1979-08-02
DE2314708C3 true DE2314708C3 (en) 1980-04-10

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DE2314708A Expired DE2314708C3 (en) 1973-03-24 1973-03-24 Joint socket for an artificial hip joint

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US (1) US3918102A (en)
JP (1) JPS5041379A (en)
AT (1) AT336175B (en)
DE (1) DE2314708C3 (en)
GB (1) GB1460813A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE403884B (en) * 1975-04-22 1978-09-11 Branemark Per Ingvar FOR PARTY AT NAMES INTENDED PROTEST SPECIALLY INTENDED NOT TO BE IN AN ARTIFICIAL JOINT
JPS52130183A (en) * 1975-04-22 1977-11-01 Ingubuaru Buranemaruku Peru Method of forming bone setting
DE2611985C3 (en) * 1976-03-20 1981-08-13 Baumann, Friedrich, Prof. Dr.Med., 8858 Neuburg Femoral head endoprosthesis
DE2809556C3 (en) * 1978-03-06 1980-09-25 Paul Prof. Dr. Brinckmann Partial pelvic prosthesis
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US3918102A (en) 1975-11-11
GB1460813A (en) 1977-01-06
JPS5041379A (en) 1975-04-15
AT336175B (en) 1977-04-25
ATA239974A (en) 1976-08-15
DE2314708A1 (en) 1974-10-03
DE2314708B2 (en) 1979-08-02

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