DE4128259A1 - Socket for hip joint prosthesis - has elongated holes for screws which attach socket to pelvis. - Google Patents

Socket for hip joint prosthesis - has elongated holes for screws which attach socket to pelvis.

Info

Publication number
DE4128259A1
DE4128259A1 DE4128259A DE4128259A DE4128259A1 DE 4128259 A1 DE4128259 A1 DE 4128259A1 DE 4128259 A DE4128259 A DE 4128259A DE 4128259 A DE4128259 A DE 4128259A DE 4128259 A1 DE4128259 A1 DE 4128259A1
Authority
DE
Germany
Prior art keywords
socket
acetabular cup
elongated
holes
elongated holes
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
DE4128259A
Other languages
German (de)
Other versions
DE4128259C2 (en
Inventor
Wilhelm Dipl Ing Bloemer
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.)
Aesculap AG
Original Assignee
Aesculap AG
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 Aesculap AG filed Critical Aesculap AG
Priority to DE4128259A priority Critical patent/DE4128259A1/en
Priority to DE9110508U priority patent/DE9110508U1/en
Publication of DE4128259A1 publication Critical patent/DE4128259A1/en
Application granted granted Critical
Publication of DE4128259C2 publication Critical patent/DE4128259C2/de
Granted 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4609—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of acetabular cups
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—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
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • 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
    • A61F2002/30316—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
    • A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/305—Snap connection
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A61F2002/3403—Polar aperture
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A61F2002/3406—Oblong apertures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3429—Acetabular cups with an integral peripheral collar or flange, e.g. oriented away from the shell centre line
    • A61F2002/3435—Acetabular cups with an integral peripheral collar or flange, e.g. oriented away from the shell centre line peripheral lip, e.g. elastic lip
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
    • A61F2002/3462—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped having a frustoconical external shape, e.g. entirely frustoconical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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
    • A61F2002/3482—Two hemispherical halves having completely different structures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

A socket (1) which receives the ball end of a hip joint prosthesis, is attached to the pelvis by screws which pass through holes (11,12,13) in the socket wall. The socket has a hemispherical outer surface whilst the inner surface is in the form of a frustum of a cone. At least one of the holes (11,12,13) for the fixing screws is elongated. The longitudinal axis of each elongated hole is inclined at an angle of about 30 deg to the radial plane, of the hemispherical outer surface, which passes through the elongated hole. When two such elongated holes are provided these are arranged symmetrically about a common radial plane. USE/ADVANTAGE - Socket for hip joint prosthesis. The elongated fixing holes provide a limited degree of positional adjustment.

Description

Die Erfindung betrifft eine Hüftgelenkpfanne mit einer im wesentlichen kugeligen Außenfläche und mit Öffnungen zur Aufnahme von Knochenschrauben, von denen wenigstens eine als Langloch ausgebildet ist.The invention relates to an acetabular cup with a essentially spherical outer surface and with openings for Inclusion of bone screws, at least one of which is designed as an elongated hole.

Hüftgelenkpfannen dieser Art sind beispielsweise in der DE-OS 33 31 191 und in der DE-OS 39 01 885 beschrieben. Derartige Hüftgelenkpfannen sind nicht als Einschraubpfan­ nen ausgebildet, sondern sie werden in eine halbkugelför­ mige Ausnehmung im Hüftgelenkknochen eingedrückt und in dieser Position durch Knochenschrauben verankert, die durch Öffnungen in der Pfanne von innen her in den angren­ zenden Hüftknochen eingeschraubt werden.Acetabular cups of this type are, for example, in the DE-OS 33 31 191 and described in DE-OS 39 01 885. Such acetabular cups are not a screw-in socket nen trained, but they are in a hemisphere recess in the hip bone and pressed in this position anchored by bone screws that through openings in the pan from the inside in the angren screwed hip bones.

Dabei können die Öffnungen für den Durchtritt der Knochen­ schrauben einen kreisförmigen Querschnitt aufweisen, es sind auch Langlöcher bekannt, die sich parallel zu einem Längengrad der Hüftpfanne erstrecken, also parallel zur Schnittlinie zwischen der Außenfläche der Hüftpfanne und einer vertikalen, radialen Schnittebene. Dadurch sind in gewissem Umfange Positionskorrekturen beim Einsetzen und beim Einschrauben der Knochenschrauben möglich.The openings for the passage of the bones screws have a circular cross section, it oblong holes are also known which are parallel to one another  Longitude of the acetabulum extend, so parallel to Line of intersection between the outer surface of the acetabulum and a vertical, radial cutting plane. This means that To some extent position corrections when inserting and possible when screwing in the bone screws.

Es ist Aufgabe der Erfindung, Hüftgelenkpfannen der be­ kannten Art so weiterzubilden, daß die Positionskorrek­ turmöglichkeiten beim Einsetzen der Hüftpfanne verbessert und daß eine erhöhte Sicherheit der Verankerung durch die Knochenschrauben erreicht werden kann.It is an object of the invention to be acetabular cups known kind so that the position correction Improved door opening options and that increased security of anchorage through the Bone screws can be achieved.

Diese Aufgabe wird bei einer Hüftgelenkpfanne der eingangs beschriebenen Art erfindungsgemäß dadurch gelöst, daß die Längsrichtung des Langloches gegenüber der Schnittlinie einer senkrechten Radialebene und der Oberfläche (Längen­ grad) der Pfanne schräg angeordnet ist.This task is the beginning of an acetabular cup described type according to the invention solved in that the Longitudinal direction of the elongated hole opposite the cutting line a vertical radial plane and the surface (lengths degrees) the pan is arranged at an angle.

Diese schräge Anordnung der Langlöcher ermöglicht eine Korrektur der Position nicht nur parallel zu einem Längen­ grad, sondern auch quer dazu, so daß der Operateur auch nach dem Einschrauben der Knochenschraube in den Knochen die Position der Pfanne in beliebiger Weise korrigieren kann. Ein erheblicher Vorteil der Verwendung eines schräg angeordneten Langloches ist auch darin zu sehen, daß die Knochenschraube bei bereits eingesetzter Hüftpfanne in un­ terschiedliche Bereiche des benachbarten Knochens einge­ schraubt werden kann. Der Operateur hat damit die Möglich­ keit, die Knochenschraube in den Knochenbereich einzuset­ zen, in dem eine besonders gute Verankerung gewährleistet ist. Das umgebende Knochengewebe der Hüftpfanne ist näm­ lich nicht in allen Bereichen geeignet, eine Knochen­ schraube in voller Länge aufzunehmen oder sie wirklich fest zu verankern, eine solche Möglichkeit besteht nur in Teilbereichen des umgebenden Knochens. Damit wird dem Ope­ rateur eine größere Freiheit beim Einschrauben der Kno­ chenschrauben gewährleistet.This oblique arrangement of the elongated holes enables one Correction of the position not only parallel to a length degree, but also across it, so that the surgeon too after screwing the bone screw into the bone correct the position of the pan in any way can. A significant advantage of using an oblique arranged elongated hole can also be seen in that the Bone screw in an already inserted acetabulum different areas of the adjacent bone can be screwed. The surgeon has the possibility ability to insert the bone screw into the bone area zen, in which a particularly good anchorage is guaranteed is. The surrounding bone of the acetabulum is named not suitable in all areas, a bone  screw in full length or really firmly anchored, such a possibility exists only in Partial areas of the surrounding bone. With this the Ope rateur greater freedom when screwing in the kno screws guaranteed.

Beispielsweise kann zwischen der Längsrichtung des Langlo­ ches und dem Längengrad ein Winkel von etwa 30° einge­ schlossen sein.For example, between the longitudinal direction of the Langlo ches and the longitude an angle of about 30 ° be closed.

Besonders vorteilhaft ist es, wenn zwei Langlöcher vorge­ sehen sind, die in Umfangsrichtung gegeneinander versetzt sind und spiegelsymmetrisch zu einem zwischen ihnen ange­ ordneten Längengrad angeordnet sind. Diese spiegelsymme­ trische Anordnung ermöglicht die Verwendung sowohl auf der linken als auch auf der rechten Körperseite, ohne daß da­ für unterschiedliche Pfannenmodelle notwendig wären.It is particularly advantageous if two elongated holes are provided are seen that offset in the circumferential direction against each other are and mirror-symmetrical to one between them ordered longitude are arranged. This mirror symmetry trical arrangement allows use on both left as well as on the right side of the body without there would be necessary for different pan models.

Vorzugsweise sind die beiden Langlöcher in Umfangsrichtung um maximal 60° gegeneinander versetzt, das heißt sie kon­ zentrieren sich auf einen relativ engen Bereich, da auch der die Pfanne umgebende Knochen nur in einem relativ en­ gen Winkelbereich eine optimale Verankerung der Knochen­ schrauben gewährleistet.The two elongated holes are preferably circumferential offset from each other by a maximum of 60 °, that means they con center on a relatively narrow area as well the bone surrounding the pan is only in a relatively large en optimal anchoring of the bones towards the angular range screws guaranteed.

Zwischen den beiden Langlöchern kann ein kreisrundes Loch zur Aufnahme einer weiteren Knochenschraube angeordnet sein, wobei vorzugsweise die Mittelpunkte der Langlöcher und des kreisrunden Lochs im wesentlichen auf derselben Höhe liegen. There can be a circular hole between the two oblong holes arranged to accommodate another bone screw be, preferably the centers of the elongated holes and the circular hole substantially on the same Height.  

Für dieses kreisrunde Loch wird normalerweise eine Veran­ kerungsschraube mit einem kugelkalottenförmigen Kopf ge­ wählt, so daß die Verankerungsschraube nicht nur in exakt radialer Richtung eingeschraubt werden kann, sondern auch abweichend davon, dies gibt dem Operateur die Möglichkeit, die optimale Einschraubrichtung zu wählen, wobei dieses Merkmal zusammen mit den schräg angeordneten Langlöchern eine besonders große Variabilität der Verankerung bietet. Die genannten Öffnungen befinden sich alle in einem rela­ tiv engen Winkelbereich, der im wesentlichen dem ebenfalls engen Winkelbereich des umgebenden Knochens entspricht, der für die Verankerung die besten Voraussetzungen bietet.A veran is usually used for this circular hole tapping screw with a spherical cap-shaped head chooses so that the anchoring screw is not only in exact radial direction can be screwed, but also deviating from this, this gives the surgeon the opportunity to choose the optimal screwing direction, this Characteristic together with the obliquely arranged oblong holes offers a particularly large variability of the anchoring. The openings mentioned are all in a rela tiv narrow angular range, which is essentially the same corresponds to the narrow angular range of the surrounding bone, that offers the best conditions for anchoring.

Die nachfolgende Beschreibung bevorzugter Ausführungsfor­ men der Erfindung dient im Zusammenhang mit der Zeichnung der näheren Erläuterung. Es zeigen:The following description of preferred embodiments Men of the invention is used in connection with the drawing the detailed explanation. Show it:

Fig. 1 eine perspektivische Ansicht einer Hüft­ gelenkpfanne von der Unterseite her und Fig. 1 is a perspective view of an acetabular cup from the bottom and

Fig. 2 eine Schnittansicht längs Linie 2-2 ei­ ner in den Hüftgelenkknochen eingesetz­ ten Hüftgelenkpfanne mit Kunststoffein­ satz. Fig. 2 is a sectional view taken along line 2-2 egg ner in the hip joint bone inserted th acetabular cup with plastic insert.

Die in der Zeichnung dargestellte Hüftgelenkpfanne 1 weist eine im wesentlichen halbkugelförmige Außenfläche 2 auf. Der Innenraum der Hüftgelenkpfanne 1 ist kegelstumpfartig ausgebildet, wobei sich an den kegelstumpfförmigen Teil 3 zur Unterseite ein kreiszylindrischer Bereich 4 an­ schließt. Im Übergang vom kegelstumpfförmigen Teil 3 in den kreiszylinderförmigen Bereich 4 ist eine umlaufende Hinterschneidung 5 angeordnet, die als Rastkante für einen in den Innenraum eingeschobenen Einsatz 6 dient, der so­ wohl den kegelstumpfförmigen Teil 3 als auch den sich dar­ an anschließenden kreiszylinderförmigen Bereich 4 voll ausfüllt und geringfügig nach unten aus der Hüftgelenk­ pfanne 1 hervorsteht.The acetabular cup 1 shown in the drawing has a substantially hemispherical outer surface 2 . The interior of the acetabular cup 1 is shaped like a truncated cone, with a circular cylindrical region 4 joining the truncated cone-shaped part 3 to the underside. In the transition from the frustoconical part 3 to the circular-cylindrical area 4 , a circumferential undercut 5 is arranged, which serves as a locking edge for an insert 6 inserted into the interior, which probably completely fills the frustoconical part 3 and the circular-cylindrical area 4 adjoining it and protrudes slightly downward from the hip joint socket 1 .

Dieser Einsatz 6, der beispielsweise aus Polyethylen be­ stehen kann, weist seinerseits eine im wesentlichen halb­ kugelförmige Lagerfläche 7 für den Gelenkkopf eines natür­ lichen oder künstlichen Femurs auf.This insert 6 , which may be made of polyethylene, for example, in turn has a substantially semi-spherical bearing surface 7 for the joint head of a natural or artificial femur.

Die Hüftgelenkpfanne 1 weist an ihrer höchsten Stelle eine Innengewindebohrung 8 auf, die vor dem Einschnappen des Einsatzes 6 in die Hüftgelenkpfanne 1 von der Innenseite her frei zugänglich ist, so daß darin zum Einsetzen ein Werkzeug eingeschraubt werden kann.The acetabular cup 1 has at its highest point an internally threaded bore 8 which is freely accessible from the inside before the insert 6 snaps into the acetabular cup 1 , so that a tool can be screwed therein for insertion.

Im Mantel 8 der Hüftgelenkpfanne 1 befinden sich drei Schraubenlöcher zur Aufnahme von Knochenschrauben 10, näm­ lich ein erstes Schraubenloch 11 mit kreisförmigem Quer­ schnitt und symmetrisch zur Position dieses Schraubenlo­ ches 11 zu beiden Seiten umfangsmäßig versetzt zwei Lang­ löcher 12 und 13. Beide Langlöcher sind dabei so angeord­ net, daß ihre Längsrichtungen mit einem Längengrad der Hüftgelenkpfanne 1 einen Winkel einschließen, beispiels­ weise einen Winkel von 30°. Unter "Längengrad" wird dabei die Schnittlinie der Außenfläche 2 mit einer senkrechten Radialebene der Hüftgelenkpfanne verstanden.In the jacket 8 of the acetabular cup 1 there are three screw holes for receiving bone screws 10 , namely a first screw hole 11 with a circular cross section and symmetrically offset to the position of this screw hole 11 circumferentially offset on both sides by two elongated holes 12 and 13 . Both slots are net angeord that their longitudinal directions include an angle with a degree of longitude of the acetabular cup 1 , example, an angle of 30 °. “Longitude” is understood to mean the line of intersection of the outer surface 2 with a vertical radial plane of the acetabular cup.

Beide Langlöcher 12 und 13 sind spiegelsymmetrisch zu ei­ nem Längengrad angeordnet, der durch das kreisförmige Schraubenloch hindurchgeht, das heißt auch ihre Neigung ist entgegengesetzt (Fig. 1).Both slots 12 and 13 are arranged mirror-symmetrically to a degree of longitude that passes through the circular screw hole, that is, their inclination is opposite ( Fig. 1).

Dabei befinden sich die drei Schraubenlöcher 11, 12 und 13 etwa auf halber Höhe der Hüftgelenkpfanne 1, und sie sind am Rand derartig von innen nach außen konvergierend ausge­ bildet, daß die Köpfe der Knochenschrauben 10 am vollstän­ digen Hindurchstecken durch die Löcher gehindert sind, aber soweit in die Löcher eindringen, daß sie nicht nach innen über die Innenwand der Hüftgelenkpfanne 1 hervorste­ hen. Die Köpfe werden also vollständig im Wandmaterial der Hüftgelenkpfanne 1 aufgenommen.The three screw holes 11 , 12 and 13 are located approximately halfway up the acetabular cup 1 , and they converge from the inside outwards in such a way that the heads of the bone screws 10 are prevented from being fully inserted through the holes, but penetrate so far into the holes that they do not protrude inwards over the inner wall of the acetabular cup 1 . The heads are thus completely absorbed in the wall material of the acetabular cup 1 .

Umfangsmäßig sind die Langlöcher 12 gegenüber dem kreis­ förmigen Schraubenloch 11 maximal um 30° versetzt, so daß alle drei Löcher 11, 12 und 13 innerhalb eines Winkelbe­ reiches von 60° angeordnet sind. Beim richtigen Einsetzen der Hüftgelenkpfanne ist es dadurch möglich, die Knochen­ schrauben in einem winkelmäßig eng begrenzten, optimalen Hüftgelenksknochenbereich einzuschrauben (Fig. 2).The circumferential slots 12 are offset from the circular screw hole 11 by a maximum of 30 °, so that all three holes 11 , 12 and 13 are arranged within a Winkelbe range of 60 °. When the acetabular cup is inserted correctly, it is possible to screw in the bones in an optimally narrow, optimally limited hip bone area ( Fig. 2).

Claims (6)

1. Hüftgelenkpfanne mit einer im wesentlichen kugeligen Außenfläche und mit Öffnungen zur Aufnahme von Kno­ chenschrauben, von denen wenigstens eine als Lang­ loch ausgebildet ist, dadurch gekennzeichnet, daß die Längsrichtung des Langloches (12, 13) gegenüber der Schnittlinie einer senkrechten Radialebene und der Oberfläche (Längen­ grad) der Pfanne (1) schräg angeordnet ist.1. acetabular cup with a substantially spherical outer surface and with openings for receiving bone screws, at least one of which is designed as an elongated hole, characterized in that the longitudinal direction of the elongated hole ( 12 , 13 ) with respect to the cutting line of a vertical radial plane and the surface (Longitude degrees) of the pan ( 1 ) is arranged obliquely. 2. Hüftgelenkpfanne nach Anspruch 1, dadurch gekenn­ zeichnet, daß zwischen der Längsrichtung des Lang­ loches (12, 13) und dem Längengrad ein Winkel von etwa 30° eingeschlossen ist.2. acetabular cup according to claim 1, characterized in that an angle of about 30 ° is included between the longitudinal direction of the elongated hole ( 12 , 13 ) and the longitude. 3. Hüftgelenkpfanne nach Anspruch 1 oder 2, dadurch ge­ kennzeichnet, daß zwei Langlöcher (12, 13) vorgese­ hen sind, die in Umfangsrichtung gegeneinander ver­ setzt sind und spiegelsymmetrisch zu einem zwischen ihnen angeordneten Längengrad angeordnet sind. 3. acetabular cup according to claim 1 or 2, characterized in that two elongated holes ( 12 , 13 ) are vorgese hen, which are set against each other in the circumferential direction and are arranged mirror-symmetrically to a longitudinal degree arranged between them. 4. Hüftgelenkpfanne nach Anspruch 3, dadurch gekenn­ zeichnet, daß die beiden Langlöcher (12, 13) in Um­ fangsrichtung um maximal 60° gegeneinander versetzt sind.4. acetabular cup according to claim 3, characterized in that the two elongated holes ( 12 , 13 ) are offset from one another in the circumferential direction by a maximum of 60 °. 5. Hüftgelenkpfanne nach einem der Ansprüche 3 oder 4, dadurch gekennzeichnet, daß zwischen den beiden Langlöchern (12, 13) ein kreisrundes Loch (11) zur Aufnahme einer weiteren Knochenschraube (10) ange­ ordnet ist.5. acetabular cup according to one of claims 3 or 4, characterized in that between the two elongated holes ( 12 , 13 ), a circular hole ( 11 ) for receiving a further bone screw ( 10 ) is arranged. 6. Hüftgelenkpfanne nach Anspruch 5, dadurch gekenn­ zeichnet, daß die Mittelpunkte der Langlöcher (12, 13) und des kreisrunden Loches (11) im wesentlichen auf derselben Höhe liegen.6. acetabular cup according to claim 5, characterized in that the centers of the elongated holes ( 12 , 13 ) and the circular hole ( 11 ) are substantially at the same height.
DE4128259A 1991-08-24 1991-08-24 Socket for hip joint prosthesis - has elongated holes for screws which attach socket to pelvis. Granted DE4128259A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4128259A DE4128259A1 (en) 1991-08-24 1991-08-24 Socket for hip joint prosthesis - has elongated holes for screws which attach socket to pelvis.
DE9110508U DE9110508U1 (en) 1991-08-24 1991-08-24 Hip socket

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128259A DE4128259A1 (en) 1991-08-24 1991-08-24 Socket for hip joint prosthesis - has elongated holes for screws which attach socket to pelvis.
DE9110508U DE9110508U1 (en) 1991-08-24 1991-08-24 Hip socket

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DE4128259A1 true DE4128259A1 (en) 1993-03-04
DE4128259C2 DE4128259C2 (en) 1993-06-17

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DE9110508U Expired - Lifetime DE9110508U1 (en) 1991-08-24 1991-08-24 Hip socket
DE4128259A Granted DE4128259A1 (en) 1991-08-24 1991-08-24 Socket for hip joint prosthesis - has elongated holes for screws which attach socket to pelvis.

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DE29516473U1 (en) * 1995-10-17 1995-12-07 KERAMED Medizintechnik GmbH, 07646 Mörsdorf Artificial acetabular cup
FR2725616A1 (en) * 1994-10-12 1996-04-19 Prost Didier Cotyloidal cup prosthesis for hip joint replacement
WO1996022746A1 (en) * 1995-01-27 1996-08-01 Amir Zahedi Modular bone implant with socket and pins
EP1066806A1 (en) * 1999-07-08 2001-01-10 Biomet Merck Deutschland GmbH Cup for a hip joint endoprosthesis
EP1712206A2 (en) * 2005-04-12 2006-10-18 Zimmer Technology, Inc. Acetabular implant with a tapered bearing-locking flange
US7854768B2 (en) 2006-01-20 2010-12-21 Zimmer Technology, Inc. Shoulder arthroplasty system
US8075628B2 (en) 2002-04-25 2011-12-13 Zimmer, Inc. Modular bone implant, tools, and method
US8123815B2 (en) 2008-11-24 2012-02-28 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US8308810B2 (en) 2009-07-14 2012-11-13 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US8608805B2 (en) 2005-09-16 2013-12-17 Zimmer Gmbh Insert and shell of a joint ball receptacle
US8690951B2 (en) 2005-11-18 2014-04-08 Zimmer, Gmbh Base platform for an artificial joint

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DE4142920A1 (en) * 1991-12-24 1993-07-01 Chiropro Gmbh Screwed bush for socket of hip joint prosthesis - has hand of screw thread chosen so that bush tends to tighten in use
DE4205018C1 (en) * 1992-02-19 1993-08-26 Eska Medical Gmbh & Co, 2400 Luebeck, De Artificial hip joint bearing shell - has bottom edge side opening to retain guiding pin, permitting alignment before inserting anchorage screws
FR2701649B1 (en) * 1993-02-17 1997-08-01 Amp Medical Cotyloid prosthesis.
DE4413038A1 (en) * 1994-04-15 1995-10-19 Alphanorm Medizintechnik Gmbh Acetabular prosthesis
DE10113614B4 (en) * 2001-03-20 2004-01-29 Eska Implants Gmbh & Co. Set for creating an implant as a replacement for a destroyed pelvic bone socket
US8679187B2 (en) 2006-03-20 2014-03-25 Smith & Nephew, Inc. Acetabular cup assembly for multiple bearing materials
DE102018101657A1 (en) * 2018-01-25 2019-07-25 Aesculap Ag Medical bone screw and implant system

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DE3331191A1 (en) * 1983-08-30 1985-04-04 Orthoplant Vertriebs-GmbH, 2800 Bremen Hip joint prosthesis
DE3901885A1 (en) * 1989-01-23 1990-08-02 Werner Prof Dr Med Sattel PAN FOR A JOINT OPROTHESIS

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DE3331191A1 (en) * 1983-08-30 1985-04-04 Orthoplant Vertriebs-GmbH, 2800 Bremen Hip joint prosthesis
DE3901885A1 (en) * 1989-01-23 1990-08-02 Werner Prof Dr Med Sattel PAN FOR A JOINT OPROTHESIS

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2725616A1 (en) * 1994-10-12 1996-04-19 Prost Didier Cotyloidal cup prosthesis for hip joint replacement
WO1996022746A1 (en) * 1995-01-27 1996-08-01 Amir Zahedi Modular bone implant with socket and pins
DE29516473U1 (en) * 1995-10-17 1995-12-07 KERAMED Medizintechnik GmbH, 07646 Mörsdorf Artificial acetabular cup
EP1066806A1 (en) * 1999-07-08 2001-01-10 Biomet Merck Deutschland GmbH Cup for a hip joint endoprosthesis
US8075628B2 (en) 2002-04-25 2011-12-13 Zimmer, Inc. Modular bone implant, tools, and method
EP1712206A2 (en) * 2005-04-12 2006-10-18 Zimmer Technology, Inc. Acetabular implant with a tapered bearing-locking flange
EP1712206A3 (en) * 2005-04-12 2006-12-27 Zimmer Technology, Inc. Acetabular implant with a tapered bearing-locking flange
US8608805B2 (en) 2005-09-16 2013-12-17 Zimmer Gmbh Insert and shell of a joint ball receptacle
US8690951B2 (en) 2005-11-18 2014-04-08 Zimmer, Gmbh Base platform for an artificial joint
US8940054B2 (en) 2006-01-20 2015-01-27 Zimmer Technology, Inc. Shoulder arthroplasty system
US7854768B2 (en) 2006-01-20 2010-12-21 Zimmer Technology, Inc. Shoulder arthroplasty system
US9283075B2 (en) 2006-01-20 2016-03-15 Zimmer, Inc. Shoulder arthroplasty system
US9770334B2 (en) 2006-01-20 2017-09-26 Zimmer, Inc. Shoulder arthroplasty system
US10383735B2 (en) 2006-01-20 2019-08-20 Zimmer, Inc. Shoulder arthroplasty system
US11298234B2 (en) 2006-01-20 2022-04-12 Zimmer, Inc. Shoulder arthroplasty system
US8123815B2 (en) 2008-11-24 2012-02-28 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US9445903B2 (en) 2008-11-24 2016-09-20 Biomet Manufacturing, Llc Multi-bearing acetabular prosthesis
US8308810B2 (en) 2009-07-14 2012-11-13 Biomet Manufacturing Corp. Multiple bearing acetabular prosthesis
US9445904B2 (en) 2009-07-14 2016-09-20 Biomet Manufacturing, Llc Multiple bearing acetabular prosthesis

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DE9110508U1 (en) 1991-10-31
DE4128259C2 (en) 1993-06-17

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