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DE2309432A1 - SHAFT-LIKE ANCHORAGE FOR IMPLANT PROSTHESES - Google Patents

SHAFT-LIKE ANCHORAGE FOR IMPLANT PROSTHESES

Info

Publication number
DE2309432A1
DE2309432A1 DE19732309432 DE2309432A DE2309432A1 DE 2309432 A1 DE2309432 A1 DE 2309432A1 DE 19732309432 DE19732309432 DE 19732309432 DE 2309432 A DE2309432 A DE 2309432A DE 2309432 A1 DE2309432 A1 DE 2309432A1
Authority
DE
Germany
Prior art keywords
anchorage
shaft
bone
implant prostheses
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
DE19732309432
Other languages
German (de)
Other versions
DE2309432C3 (en
DE2309432B2 (en
Inventor
Hans Christoph Meuli
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.)
Sulzer AG
Original Assignee
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 Sulzer AG filed Critical Sulzer AG
Publication of DE2309432A1 publication Critical patent/DE2309432A1/en
Publication of DE2309432B2 publication Critical patent/DE2309432B2/en
Application granted granted Critical
Publication of DE2309432C3 publication Critical patent/DE2309432C3/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
    • A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4261—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists
    • 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
    • A61F2/38—Joints for elbows or knees
    • A61F2/3804—Joints for elbows or knees for elbows
    • 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
    • A61F2/40—Joints for shoulders
    • 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
    • A61F2002/30331—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
    • A61F2002/30362—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 with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • 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
    • A61F2002/30362—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 with possibility of relative movement between the protrusion and the recess
    • A61F2002/3037—Translation along the common longitudinal axis, e.g. piston
    • A61F2002/30372—Translation along the common longitudinal axis, e.g. piston with additional means for limiting said translation
    • 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
    • A61F2002/30574—Special structural features of bone or joint prostheses not otherwise provided for with an integral complete or partial collar or flange
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30649—Ball-and-socket joints
    • A61F2002/3065—Details of the ball-shaped head
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
    • A61F2002/30673—Lubricating means, e.g. synovial pocket
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • 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
    • A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30891—Plurality of protrusions
    • 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
    • A61F2/42—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes
    • A61F2/4261—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists
    • A61F2002/4264—Joints for wrists or ankles; for hands, e.g. fingers; for feet, e.g. toes for wrists for radio-carpal joints
    • 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 for implanting artificial joints
    • A61F2002/4631—Special tools for implanting artificial joints the prosthesis being specially adapted for being cemented
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • 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

P. 4 599P. 4,599

2T09A322T09A32

Gebrüder Sulzer, Aktiengescllschaft, Winterthur/SchweizSulzer Brothers, Aktiengescllschaft, Winterthur / Switzerland Sehaftartige Verankerung für Implantat-ProthesenSeam-like anchorage for implant prostheses

Die Erfindung betrifft einen schaftartige Verankerung für Implantat-Prothesen, die in operativ vorbereitete Ausnehmungen eines Knochens eingesetzt und mittels eines Haftmittels gehalten sind. Die Erfindung ist vor allem für kleine und relativ schwächer belastete Gelenke, wie z.B. Hand-, Ellenbogen- und auch Schultergelenke, geeignet.The invention relates to a shaft-like anchorage for implant prostheses, which are inserted into surgically prepared recesses in a bone and held by means of an adhesive. the Invention is mainly for small and relatively less stressed joints, such as wrist, elbow and shoulder joints, suitable.

Bei der Verankerung von Implantat-Prothesen in den relativ dünnen Knochen kleinerer Gelenke ergeben sich mit den bisher üblichen, im allgemeinen zentrisch angeordneten, einschäftigen Verankerungen Schwierigkeiten; diese beruhen darauf, dass für diese Schäfte relativ grosse Ausnehmungen im Knochen erforderlich sind, da die Schäfte zur Vermeidung einer ungewollten Drehung der Prothese im Knochen im allgemeinen eckig, vorwiegend rechteckig, ausgeführt sein und darüberhinaus wegen der mechanischen Festigkeit eine Mindestfläche aufweisen müssen. Aufgabe der Erfindung ist es, diese Unzulänglichkeiten der bisherigen .Verankerungen zu beseitigen. Die Erfindung ist gekennzeichnet durch mindestens zwei, exzentrisch zur Längsachse der Prothese angeordnete, dornartige Ansätze, die plastisch verformbar sind.When anchoring implant prostheses in the relatively thin Bones of smaller joints are produced with the previously common, generally centrally arranged, single-shaft anchors Trouble; these are based on the fact that relatively large recesses in the bone are required for these shafts, since the Shafts are generally angular, predominantly rectangular, to prevent unwanted rotation of the prosthesis in the bone and, in addition, must have a minimum area due to the mechanical strength. The object of the invention is this To eliminate inadequacies of the previous anchorages. the Invention is characterized by at least two, eccentric to the longitudinal axis of the prosthesis, mandrel-like attachments that are plastically deformable.

309848/0357309848/0357

ORIGINALORIGINAL

2309Λ322309-32

Durch die Ausbildung der Verankerung in zwei Ansätze, wird zum ersten eine flächenhafte und nicht eine, zentrische Verankerung erreicht, so dass ungewollte Drehungen der Prothese im Knochen verhindert sind; zum zweiten können die, bevorzugt aus einem Draht hergestellten, Ansätze relativ dünn sein, wofür dann nur relativ enge Bohrungen oder Ausnehmungen in die Knochensubstanz eingebracht werden müssen. Weiterhin ist es auch möglich, z.B. bei einem Hand- oder einem Ellenbogengelenk, die einzelnen Ansätze in verschiedenen Knochen, z.B. in verschiedenen Mittelhandknochen oder in Elle und Speiche, unterzubringen.By designing the anchoring in two approaches, firstly a planar and not a central anchoring is achieved, so that unwanted rotations of the prosthesis in the bone are prevented; Secondly, the approaches, preferably made from a wire, can be relatively thin, for which purpose only relatively narrow bores or recesses have to be made in the bone substance. Furthermore, it is also possible, for example in the case of a wrist or elbow joint, to accommodate the individual attachments in different bones, for example in different metacarpal bones or in ulna and radius.

Ein weiterer Vorteil der Erfindung besteht darin, dass die Ansätze während der Operation in gewissem Umfang gebogen und so an die Besonderheiten der Knochen des gerade behandelten Patienten angepasst werden können.Another advantage of the invention is that the approaches Curved to a certain extent during the operation and thus adapted to the particularities of the bones of the patient being treated can be.

Die Erfindung wird, anhand eines Ausführungsbeispiels im Zusammenhang mit der Zeichnung, deren einzige Figur als Beispiel ein Handg6j.enk /oölgt, nähei* 6 JTxciutürt.The invention is based on an exemplary embodiment in context with the drawing, the only figure of which is a handg6j.enk as an example / oölgt, neari * 6 JTxciutürt.

Die die Handwurzelknochen mindestens teilweise ersetzende Prothese besteht, wie an sich von Hüftgelenkprothesen bekannt, aus einer metallischen Kugelpfanne 1, in die ein aus Kunststoff gefertigter Kugelkopf 2 eingreift. Dieser ist um seine Achse drehbar und in Richtung seiner Achse verschiebbar auf einem Zapfen 3 gelagert. Der Zapfen 3, der mit einer ihn überragenden Platte 4 fest verbunden ist, besteht wiederum aus Metall und ist derart in eine Ausneh-The prosthesis that at least partially replaces the carpal bones consists, as is known per se from hip joint prostheses, of a metallic ball socket 1 into which a made of plastic Ball head 2 engages. This is rotatable about its axis and mounted on a pin 3 so as to be displaceable in the direction of its axis. The pin 3, which is firmly connected to a plate 4 protruding above it, is again made of metal and is thus in a recess

309848/0357309848/0357

raung 7 des Kugelkopfes 2 eingepasst, dass er bei Be- und Entlasten: des Gelenkes in der Art einer Kolbenpumpe wirkt und durch die Bohrung 11 des Kugelkopfes 2 Körperflüssigkeit als Schmiermittel ansaugt. Raung 7 of the ball head 2 fitted so that when loading and unloading : the joint acts in the manner of a piston pump and sucks in body fluid as a lubricant through the bore 11 of the ball head 2.

Beide Prothesenteile besitzen als Verankerungselemente zwei dornartige Ansätze 6j selbstverständlich ist es möglich, statt zwei, auch drei oder mehr, z.B. in einem Dreieck angeordnete, Dorne 6 an jedem Teil vorzusehen. Die aus Metall hergestellten Ansätze 6, die mit der Platte 4 bzw. der Pfanne 1 fest verbunden, z.B. an diese Elemente angeschweisst, sind, besitzen eine langgestreckte, schlanke Form und laufen an ihren freien Enden in abgerundeten Spitzen aus.Both parts of the prosthesis have two spike-like anchoring elements Approaches 6j of course it is possible, instead of two, also to provide three or more, e.g. arranged in a triangle, mandrels 6 on each part. The approaches 6 made of metal, which are firmly connected to the plate 4 or the pan 1, e.g. welded to these elements, have an elongated, slim shape and taper off at their free ends in rounded tips.

Bei dem gezeigten Beispiel ist die den Zapfen 2 tragende Platte in der Speiche 5, also im Unterarm, verankert j ihre Ansätze 6 sitzen in einem Hohlraum, der in den Knochen eingefräst worden ist} sie sind mittels eines Knochenzementes 8, z.B. mittels Methylmet-In the example shown, the plate carrying the pin 2 is anchored in the spoke 5, that is to say in the forearm, j its lugs 6 sit in a cavity that has been milled into the bone} they are by means of a bone cement 8, e.g. by means of methylmetal

A %"* *3 4 r\ r* r* *v\ TJ^V^T ^* *■* * * »\» » η Vt *·* ~\ 4- 4-* »rs A % "* * 3 4 r \ r * r * * v \ TJ ^ V ^ T ^ * * ■ * * *» \ »» η Vt * · * ~ \ 4- 4- * »rs

Die Ansätze 6 der Pfanne ί sind dagegen in zwei verschiedenen Mittelhandknochen 9 und 10, wiederum mit Hilfe von Knochenzement 8, in entsprechend operativ vorbereiteten Hohlräumen verankert.The approaches 6 of the pan ί, however, are in two different metacarpal bones 9 and 10, again with the help of bone cement 8, anchored in correspondingly surgically prepared cavities.

Wie die Fi.gur zeigt, sind die Ansätze 6 an der Pfanne 1, die ebenso wie diejenigen an der Platte 4 ursprünglich geradlinig ausgebildet sind, durch Verbiegen an die Hohlräume in den beiden Mittelhandknochen angepasst worden.As the Fi.gur shows, the lugs 6 on the pan 1, the same as those on the plate 4 are originally straight, by bending to the cavities in the two metacarpal bones has been adjusted.

309848/0357309848/0357

Der" Vollständigkeit halber sei erwähnt, dass bei der als Beispiel gezeigten Handgelenkprothese die Pfanne 1 auch in der Speiche 5 und der den Kugelkopf tragenden Zapfen 3 in den Mittelhandknochen 9 und 10 angeordnet sein könnten.For the sake of completeness it should be mentioned that in the example wrist prosthesis shown the socket 1 also in the spoke 5 and the pin 3 carrying the ball head in the Metacarpal bones 9 and 10 could be arranged.

309848/0357309848/0357

Claims (2)

PatentansprücheClaims (l./ Schaftartige Verankerung für Implantat-Prothesen, die in operativ vorbereitete Ausnehmungen eines Knochens eingesetzt und mittels eines Haftmittels gehalten sind, gekennzeichnet durch mindestens zwei, exzentrisch zur Längsachse der Prothese angeordnete, dornartige Ansätze (6), die plastisch verformbar sind.(l. / Shaft-like anchorage for implant prostheses that are in surgically prepared recesses of a bone are inserted and held by means of an adhesive, marked by at least two spike-like extensions (6) which are arranged eccentrically to the longitudinal axis of the prosthesis and which are plastically deformable are. 2. Verankerung nach Anspruch 1, dadurch gekennzeichnet, dass die Ansätze (6) aus sich gegen das freie Ende konisch verjüngendem Draht bestehen.2. Anchoring according to claim 1, characterized in that the lugs (6) consist of conically tapering towards the free end Wire. 309848/0357309848/0357 LeerseiteBlank page
DE19732309432 1972-05-18 1973-02-24 Shaft-like anchorage for implant prostheses Expired DE2309432C3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH737472 1972-05-18
CH737472A CH551785A (en) 1972-05-18 1972-05-18 ANCHORING TO IMPLANT PROSTHESES.

Publications (3)

Publication Number Publication Date
DE2309432A1 true DE2309432A1 (en) 1973-11-29
DE2309432B2 DE2309432B2 (en) 1976-05-26
DE2309432C3 DE2309432C3 (en) 1977-01-27

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003096A (en) * 1975-06-17 1977-01-18 Sulzer Brothers Limited Wrist joint endoprosthesis
US4040130A (en) * 1976-10-12 1977-08-09 Laure Prosthetics, Inc. Wrist joint prosthesis
US4106128A (en) * 1976-12-06 1978-08-15 Greenwald A Seth Endoprosthetic bone joint
US4206517A (en) * 1977-12-01 1980-06-10 Biomedical Engineering Corp. Floating center prosthetic joint
US4280233A (en) * 1979-02-15 1981-07-28 Raab S Bone connective prosthesis comprising a reinforcement element carrying a polymer layer having a varying modulus of elasticity
EP0454646A1 (en) * 1990-04-26 1991-10-30 Medevelop Ab Joint reconstruction system especially for wrist joints
EP0532440A1 (en) * 1991-09-12 1993-03-17 Tornier Sa Total wrist prosthesis
EP0563502A1 (en) * 1992-04-03 1993-10-06 SULZER Medizinaltechnik AG Metal stem
EP1159939A1 (en) * 2000-05-30 2001-12-05 Biomet Merck France Total wrist prosthesis
WO2015150347A1 (en) * 2014-03-31 2015-10-08 Universiteit Gent Endoprosthesis

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4003096A (en) * 1975-06-17 1977-01-18 Sulzer Brothers Limited Wrist joint endoprosthesis
US4040130A (en) * 1976-10-12 1977-08-09 Laure Prosthetics, Inc. Wrist joint prosthesis
US4106128A (en) * 1976-12-06 1978-08-15 Greenwald A Seth Endoprosthetic bone joint
US4206517A (en) * 1977-12-01 1980-06-10 Biomedical Engineering Corp. Floating center prosthetic joint
US4280233A (en) * 1979-02-15 1981-07-28 Raab S Bone connective prosthesis comprising a reinforcement element carrying a polymer layer having a varying modulus of elasticity
EP0454646A1 (en) * 1990-04-26 1991-10-30 Medevelop Ab Joint reconstruction system especially for wrist joints
EP0532440A1 (en) * 1991-09-12 1993-03-17 Tornier Sa Total wrist prosthesis
FR2681240A1 (en) * 1991-09-12 1993-03-19 Tornier Sa TOTAL WRIST PROSTHESIS.
EP0563502A1 (en) * 1992-04-03 1993-10-06 SULZER Medizinaltechnik AG Metal stem
US5370695A (en) * 1992-04-03 1994-12-06 Sulzer Medizinaltechnik Ag Metal shank
EP1159939A1 (en) * 2000-05-30 2001-12-05 Biomet Merck France Total wrist prosthesis
FR2809612A1 (en) * 2000-05-30 2001-12-07 Biomet Merck France TOTAL WRIST PROSTHESIS
WO2015150347A1 (en) * 2014-03-31 2015-10-08 Universiteit Gent Endoprosthesis

Also Published As

Publication number Publication date
NL7306687A (en) 1973-11-20
BE799663A (en) 1973-11-19
CH551785A (en) 1974-07-31
GB1412376A (en) 1975-11-05
FR2184621B3 (en) 1976-07-23
SE400025B (en) 1978-03-13
JPS4949497A (en) 1974-05-14
AT314069B (en) 1974-03-25
IT1003080B (en) 1976-06-10
FR2184621A1 (en) 1973-12-28
DE2309432B2 (en) 1976-05-26

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C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8339 Ceased/non-payment of the annual fee