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DE3306171A1 - Ball head for a hip prosthesis - Google Patents

Ball head for a hip prosthesis

Info

Publication number
DE3306171A1
DE3306171A1 DE19833306171 DE3306171A DE3306171A1 DE 3306171 A1 DE3306171 A1 DE 3306171A1 DE 19833306171 DE19833306171 DE 19833306171 DE 3306171 A DE3306171 A DE 3306171A DE 3306171 A1 DE3306171 A1 DE 3306171A1
Authority
DE
Germany
Prior art keywords
ball head
prosthesis
depressions
neck
hip prosthesis
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
DE19833306171
Other languages
German (de)
Other versions
DE3306171C2 (en
Inventor
Des Erfinders Auf Nen Verzicht
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
Sulzer AG
Original Assignee
Protek AG
Sulzer AG
Gebrueder Sulzer 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 Protek AG, Sulzer AG, Gebrueder Sulzer AG filed Critical Protek AG
Publication of DE3306171A1 publication Critical patent/DE3306171A1/en
Application granted granted Critical
Publication of DE3306171C2 publication Critical patent/DE3306171C2/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
    • A61F2/36—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
    • 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
    • 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
    • A61F2002/30795—Blind bores, e.g. of circular cross-section
    • A61F2002/30807—Plurality of blind bores
    • A61F2002/3081—Plurality of blind bores 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
    • A61F2/36—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
    • A61F2002/3625—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
    • A61F2002/3625—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
    • 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

Depressions (4) are provided in the hemisphere of the ball head (1) facing the prosthesis neck (2) for deposition of undegraded, solid residues. <IMAGE>

Description

Kugelkopf für eine HüftqelenkprotheseBall head for a hip joint prosthesis

Die Erfindung betrifft einen Kugelkopf für eine Htiftgelenk prothese, dessen Oberfläche in einen Prothesenhals übergeht.The invention relates to a ball head for a hip joint prosthesis, the surface of which merges into a prosthetic neck.

Es ist bekannt, dass sich in der GelenkflUssigkeit innerhalb der narbengewebeartigen Gelenkkapsel von implantier ten, knstilichn Gelenken, insbesondere von Hiiftgelenken, im Laufe der Zeit immer mehr nicht abgebaute Rückstände ansammeln. Diese bestehen z.B. aus abgestorbenen Zellen, Knochenaufbaumaterial und Abriebspartikeln der Prothesematerialien oder des für deren Verankerung benutzten Knochenzementes. Diese festen Rückstände können als reibende "Sandkörner" zwischen die Gleitflächen der Gelenkprothese gelangen und Schäden an diesen Gleitflächen verursachen.It is known that in the joint fluid within the scar tissue-like Joint capsule of implanted, artificial joints, especially hip joints, accumulate more and more undegraded residues over time. These exist e.g. from dead cells, bone building material and abrasion particles from the prosthesis materials or the bone cement used for their anchoring. These solid residues can get between the sliding surfaces of the joint prosthesis as abrasive "grains of sand" and cause damage to these sliding surfaces.

Aufgabe der Erfindung ist es, für diese Rückstände eine Möglichkeit zu schaffen, wo sie von und aus der Flüssigkeit abgelagert werden können, ohne die Funktion des Gelenkes zu beeinträchtigen; als Nebenbedingung wird dabei gefordert, dass einmal abgelagerte Partikel nach Möglichkeit nicht wieder in die Flüssigkeitsströmung gelangen sollen.The object of the invention is to find a way for these residues to create where they can be deposited in and out of the liquid without the Impair the function of the joint; as a secondary condition is required that once deposited particles do not re-enter the liquid flow as far as possible should arrive.

Gemäss der vorliegenden Erfindung wird diese Aufgabe für den Kugelkopf einer Hüftgelenkprothese dadurch gelöst, dass im Bereich der dem Prothesenhals zugewandten Oberfläche des Kugelkopfes eine Anzahl in den Kugel körper eingelassener Vertiefungen verteilt sind, deren Tiefe ein Mehrfaches ihrer grössten, linearen Querschnittsabmessung ist.According to the present invention, this object is achieved for the ball head a hip joint prosthesis solved in that in the area of the prosthesis neck facing Surface of the ball head a number of recesses in the spherical body are distributed, the depth of which is a multiple of their largest, linear cross-sectional dimension is.

Die auf der #RUck1,-Seite des Kugelkopfes anqeordntn Vertiefungen, die vorteilhafterweise aus einem Kranz von unter einem Winkel zur Prothesenhalsachse verlaufenden Bohrungen bestehen, sind ebenso wie die ganze Gelenkkapsel mit GelenkflUssighit gefüllt; dabei wird die in ihnen befindliche Flüssigkeit durch Strömungs- und Diffusionsvorgänge im Laufe der Zeit dauernd erneuert, wobei jeweils mindestens ein Teil der RUckstandspartikel aufgrund der relativ grossen Tiefe - sie beträgt mit Vorteil mindestens das Dreifache der grössten, linearen Querschnittsabmessung - in den Vertiefungen zurUckgeh#ten werden. Unter Umständen ist es vorteilhaft, wenn die Vertiefungen in einem Kunststoffköcher vorgesehen sind, der seinerseits in den Kugelkopf eingesetzt ist; diese Ausführung hat den Vorteil der Gewichtseinsparung.The indentations on the # RUck1, side of the ball head, which advantageously consists of a wreath at an angle to the axis of the prosthesis neck running bores exist, as well as the whole joint capsule with joint fluid filled; the liquid in them is thereby caused by flow and diffusion processes Constantly renewed over time, with at least some of the residue particles due to the relatively large depth - it is advantageously at least three times that the largest, linear cross-sectional dimension - in the depressions will. It may be advantageous if the depressions are in a plastic case are provided, which in turn is inserted into the ball head; this execution has the advantage of saving weight.

Im folgenden wird die Erfindung anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung näher erläutert.In the following the invention is based on embodiments in Connection with the drawing explained in more detail.

Fig. 1 zeigt ein Ausfhrungsbeispiel eines unmittelbar mit einem Schaft verbundenen Kugelkopfes im Schnitt; Fig. 2 ist ein Schnitt durch einen auf einen Schaftzapfen aufsteckbaren Kugelkopf, während Fig. 3 eine Ansicht von Fig. 2 von links darstellt; Fig. 4 zeigt in gleicher Darstellung wie Fig. 2 eine weitere Ausführungsform der Erfindung.Fig. 1 shows an embodiment of a directly with a shaft connected ball head in section; Fig. 2 is a section through one to one Shank pin attachable ball head, while FIG. 3 is a view of FIG left represents; FIG. 4 shows the same representation as FIG. 2 another embodiment of the invention.

Dcr Kugelkopf 1 (F'ig. 1) ist fest mit einem Prothesenhals 2 verbunden, dessen Achse mit 3 bezeichnet ist. Der Prothesenhals 2 geht nach unten in einen nur teilweise dargestellen Verankerungsschaft 5 über, mit dem die Prothese im Femurknochen fixiert wird.The ball head 1 (Fig. 1) is firmly connected to a prosthetic neck 2, whose axis is denoted by 3. The prosthesis neck 2 goes down into one only partially shown anchoring shaft 5 with which the prosthesis in the femur bone is fixed.

Erfindunqsgmcs sind in einem Kranz um die Prothesenhalsachse 3 herum Vertiefungen z in der dem Prothesenhals 2 zugewandten Oberfläche des Kugelkopfes 1 vorgesehen. Diese Vertiefungen 4, die schräg zur Prothesenhalsachse 3 verlaufen, sind Bohrungen relativ geringen Durchmessers; ihre Tiefe t beträgt ein Vielfaches dieses Durchmessers d. Der Verlauf der Vertiefungen 4 schräg zur Prothesenhalsachse 3 ermöglicht deren Tiefe zu vergrössern.Inventions are in a wreath around the prosthesis neck axis 3 Depressions z in the surface of the ball head facing the prosthesis neck 2 1 provided. These depressions 4, which run obliquely to the prosthesis neck axis 3, are holes of relatively small diameter; its depth t is a multiple this diameter d. The course of the depressions 4 obliquely to the axis of the prosthesis neck 3 enables its depth to be increased.

Während der Kugelkopf 1 nach (Fig. 1) mit seiner Kugelfläche unmittelbar in den Prothesenhals 2 Ubergeht, ist der Kugelkopf 7 nach Fig. 2 an seiner 'Rück"-Seite stufenförmig abgesetzt, so dass er etwa kugelkalottenförmig ausgebildet ist. Neben den Vertiefungen 4 enthalt er eine in Richtung der Prothesenhalsachse 3 verlaufende, zentrale Bohrung 6, die sich konisch verjüngt. Sie dient in bekannter Weise zum Einstecken eines nicht dargestellten Zapfens, der am Ende des Prothesenhalses des in Fig. 2 und 3 nicht gezeigten Verankerungsschaftes sitzt.While the ball head 1 according to (Fig. 1) with its spherical surface immediately In the prosthesis neck 2 passes over, the ball head 7 of Fig. 2 is on its 'rear' side stepped off, so that it is approximately spherical cap-shaped. Next to the wells 4 it contains a extending in the direction of the prosthesis neck axis 3, central bore 6 which tapers conically. It is used in a known manner to Insertion of a pin, not shown, which is at the end of the prosthetic neck of the in Fig. 2 and 3 not shown anchoring shaft sits.

Beim dritten Ausführungsbeispiel ist der eigentliche Kugelkopf 9 schirm- oder pilzartig ausgebildet, d.h. zwischen seinem Stamm 10, in dem wiederum eine zentrale Bohrung 6 fÜr die Aufnahme eines Zapfens vorgesehen ist, und einer die Gelenkfläche bildenden Haube 11 ist ein Ringraum vorhandeln. In diesen ist über ein Gewinde 13 ein als Ringkörper gestalteter Kunststoffköcher 8 eingeschraubt; die Vertiefungen 4 sind dann in diesem Köcher 8, der vorteilhafterweise aus Polyaethylen besteht, angeordnet.In the third embodiment, the actual ball head 9 is shield- or mushroom-like, i.e. between its trunk 10, in which in turn a central bore 6 is provided for receiving a pin, and one the The joint surface-forming hood 11 is provided with an annular space. In these is over a thread 13 screwed in a plastic sleeve 8 designed as an annular body; the wells 4 are then in this quiver 8, which is advantageously made of polyethylene consists, arranged.

Selbstverständlich ist es auch möglich, jede Bohrung nach Fig. 2 zunächst mit einem Kunststoffkörper auszukleiden, in dem dann die Vertiefungen 4 vorhanden sind.Of course, it is also possible to initially drill each hole according to FIG to be lined with a plastic body in which the depressions 4 are then present are.

Als Materialien für den Kugelkopf 1, 7 bzw. 9 sind alle in der Implantattechnik für derartige Kugelköpfe verwendeten Werkstoffe geeignet, insbesondere jedoch Metalle, Metalllegierungen und biokeramische Materialien.The materials for the ball head 1, 7 and 9 are all used in implant technology materials used for such ball heads are suitable, but in particular metals, Metal alloys and bio-ceramic materials.

LeerseiteBlank page

Claims (4)

Patentansprilche 1. Kugelkopf für eine HUftgelenkprothese, der mit einem Prothesenhals verbunden ist, dadurch g e k e n n z e i c h -n e t , dass im Bereich der dem Prothesenhals (2) zugewandten Oberfläche des Kugelkopfes (1, 7, 9) eine Anzahl in den Kugelkörper eingelassener Vertiefungen (4) verteilt sind, deren Tiefe (t) ein Mehrfaches ihrer grössten, linearen Querschnittsabmessung (d) ist.Claims 1. Ball head for a hip joint prosthesis with is connected to a prosthetic neck, thereby g e k e n n n z e i c h -n e t that im Area of the surface of the ball head (1, 7, 9) a number of recesses (4) embedded in the spherical body are distributed, whose depth (t) is a multiple of its largest, linear cross-sectional dimension (d) is. 2. Kugelkopf nach Anspruch 1, dadurch gekennzeichnet, dass die Vertiefungen (4) aus einem Kranz von unter einem Winkel zur Prothesenhalsachse (3) verlaufenden Bohrungen bestehen.2. Ball head according to claim 1, characterized in that the depressions (4) from a wreath of at an angle to the prosthesis neck axis (3) Holes exist. 3. Kugelkopf nach Anspruch 1, dadurch gekennzeichnet, dass die Tiefe (t) der Vertiefungen (4) mindestens das Dreifache ihrer grössten, linearen Querschnittsabmessung (d) beträgt.3. Ball head according to claim 1, characterized in that the depth (t) of the depressions (4) at least three times their largest, linear cross-sectional dimension (d) is. 4. Kugelkopf nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, dass die Vertiefungen (4) in einem Kunststoffkocher (8) vorgesehen sind, der seinerseits in den Kugelkopf (9) eingesetzt ist.4. Ball head according to one of claims 1 - 3, characterized in that that the recesses (4) are provided in a plastic cooker (8), which in turn is inserted into the ball head (9).
DE19833306171 1982-05-28 1983-02-23 Ball head for a hip joint prosthesis Expired DE3306171C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH330182 1982-05-28

Publications (2)

Publication Number Publication Date
DE3306171A1 true DE3306171A1 (en) 1983-12-08
DE3306171C2 DE3306171C2 (en) 1984-07-12

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Family Applications (1)

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DE19833306171 Expired DE3306171C2 (en) 1982-05-28 1983-02-23 Ball head for a hip joint prosthesis

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685193A1 (en) * 1991-12-20 1993-06-25 Medic Instr Hip prosthesis with extractable femoral head and extraction tool
US5571195A (en) * 1995-05-30 1996-11-05 Johnson; Lanny L. Prothesis for an artificial joint having a wear particle collection capability
EP1356795A1 (en) * 2002-04-23 2003-10-29 ESKA Implants GmbH & Co. Set for constructing a modular implant
WO2010146400A1 (en) * 2009-06-19 2010-12-23 Finsbury (Development) Limited Prosthesis

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3023354A1 (en) * 1979-10-04 1981-04-09 Gebrüder Sulzer AG, 8401 Winterthur JOINT HEAD FOR A BALL JOINT PROSTHESIS

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3023354A1 (en) * 1979-10-04 1981-04-09 Gebrüder Sulzer AG, 8401 Winterthur JOINT HEAD FOR A BALL JOINT PROSTHESIS

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685193A1 (en) * 1991-12-20 1993-06-25 Medic Instr Hip prosthesis with extractable femoral head and extraction tool
US5571195A (en) * 1995-05-30 1996-11-05 Johnson; Lanny L. Prothesis for an artificial joint having a wear particle collection capability
EP1356795A1 (en) * 2002-04-23 2003-10-29 ESKA Implants GmbH & Co. Set for constructing a modular implant
WO2010146400A1 (en) * 2009-06-19 2010-12-23 Finsbury (Development) Limited Prosthesis

Also Published As

Publication number Publication date
DE3306171C2 (en) 1984-07-12

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