DE10045678C1 - Hip joint prosthesis has a shaft with conical recess at proximal end and ball head with conical recess and has connecting part with conical pin to fit in ball head and has projection to fit in shaft - Google Patents
Hip joint prosthesis has a shaft with conical recess at proximal end and ball head with conical recess and has connecting part with conical pin to fit in ball head and has projection to fit in shaftInfo
- Publication number
- DE10045678C1 DE10045678C1 DE10045678A DE10045678A DE10045678C1 DE 10045678 C1 DE10045678 C1 DE 10045678C1 DE 10045678 A DE10045678 A DE 10045678A DE 10045678 A DE10045678 A DE 10045678A DE 10045678 C1 DE10045678 C1 DE 10045678C1
- Authority
- DE
- Germany
- Prior art keywords
- shaft
- ring
- conical recess
- conical
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/367—Proximal or metaphyseal parts of shafts
-
- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/302—Three-dimensional shapes toroidal, e.g. rings
-
- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30205—Three-dimensional shapes conical
- A61F2002/30207—Double convex cones, i.e. element having two convex cones, one at each of its opposite ends
-
- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—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
- A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
- A61F2002/30327—The prosthesis having different structural features at different locations within the same prosthesis differing in diameter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- 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
-
- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—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
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—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
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- 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
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- 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
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
- A61F2002/3054—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
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- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/36—Femoral heads ; Femoral endoprostheses
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0067—Three-dimensional shapes conical
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/0006—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting angular orientation
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0039—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter
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
Description
Die Erfindung betrifft eine Hüftgelenk-Endoprothe se der im Oberbegriff des Anspruchs 1 genannten Art.The invention relates to a hip joint endoprosthesis se of the type mentioned in the preamble of claim 1.
Durch DE 36 00 804 C1 ist eine Hüftgelenk-Endo prothese der im Oberbegriff des Anspruchs 1 genannten Art bekannt, bei der das Verbindungsteil am kopfseiti gen Ende einen Steckkonus aufweist, der in einer Konus bohrung im Kopf verankerbar ist, wobei sich die Längs achse eines in die konusförmige Ausnehmung in dem pro ximalen Ende des Schaftes einsetzbaren Konus und die Längsachse des in die Konusbohrung im Kopf einsetzbaren Konus in einem vorgegebenen Winkel von 0 < β ≦ 50° schneiden. Durch Vorratshaltung von Verbindungsteilen mit unterschiedlichen Winkeln zwischen den Konuszapfen kann jeweils ein Verbindungsteil ausgewählt werden, dessen Winkel zwischen den Konuszapfen den individuelen Verhältnissen des Patienten am besten entspricht. Ein Nachteil dieser bekannten Hüftgelenk-Endoprothese be steht darin, daß die Lagerhaltung und der dafür erfor derliche Kostenaufwand verhältnismäßig groß sind, und um diese nicht zu groß werden zu lassen, ist nur eine verhältnismäßig grobe Abstufung der Winkel möglich.DE 36 00 804 C1 is a hip joint endo prosthesis mentioned in the preamble of claim 1 Kind known, in which the connecting part on the Kopfseiti towards the end has a plug-in cone in a cone Hole is anchored in the head, the longitudinal axis one in the conical recess in the pro ximal end of the shaft insertable cone and the Longitudinal axis of the insertable in the conical bore in the head Cone at a given angle of 0 <β ≦ 50 ° to cut. By stocking connecting parts with different angles between the cone pins one connecting part can be selected, whose angle between the cone pins the individual Best corresponds to the patient's circumstances. On Disadvantage of this known hip joint endoprosthesis be is that the warehousing and the necessary for it the costs are relatively large, and in order not to let it get too big, is only one relatively rough gradation of the angles possible.
Der Erfindung liegt die Aufgabe zugrunde, diese Nachteile zu vermeiden und eine Hüftgelenk-Endoprothese zu schaffen, bei der der Umfang der Lagerhaltung für die Verbindungsteile verringert und eine feinere An passung des Winkels zwischen den beiden Konuszapfen des Verbindungsteils möglich ist.The invention is based on the object Avoid disadvantages and a hip joint endoprosthesis to create the scope of warehousing for the connecting parts are reduced and a finer type Fit the angle between the two taper pins of the Connecting part is possible.
Die der Erfindung zugrundeliegende Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Lehre gelöst.The object underlying the invention will by the specified in the characterizing part of claim 1 Doctrine solved.
Der Grundgedanke dieser Lehre besteht darin, den in die konusförmige Ausnehmung in dem proximalen Ende des Schaftes einzusetzenden Fortsatz nicht durch einen wirklichen Konus zu bilden, sondern durch zwei im Ab stand voneinander angeordnete Kugelflächen, die klem mend in die konusförmige Ausnehmung in dem proximalen Ende des Schaftes einsetzbar sind. Die erfindungsgemäße Besonderheit besteht darin, daß die am Ende des in die Ausnehmung in dem proximalen Endes des Schaftes ragen den Fortsatzes angeordnete Kugelfläche auf der Außen fläche eines Ringes gebildet ist, der eine exzentrische Ausnehmung aufweist, in die ein am Ende des Fortsatzes angeordneter Zapfen eingreift. Durch Verdrehen des so exzentrisch gehaltenen Ringes läßt sich die Ausrichtung des Zapfens zu der kugelförmigen Außenfläche dieses Ringes verändern und damit praktisch der Winkel, mit dem der Fortsatz in die konusförmige Ausnehmung in dem proximalen Ende des Schaftes ragt. Da der in die konus förmige Ausnehmung in dem Kugelkopf ragende und ein zusetzende Konuszapfen des Verbindungsteils fest mit dem in die Ausnehmung in dem proximalen Ende des Schaf tes ragenden Fortsatz verbunden ist, läßt sich somit auch dessen Ausrichtung in bezug zu dem Schaft durch Verdrehen des Ringes mit der kugelförmigen Außenwandung verändern und den anatomischen Verhältnissen des Pa tienten anpassen.The basic idea of this teaching is that into the conical recess in the proximal end of the stem to be inserted not by a real cone, but by two in the Ab stood mutually arranged spherical surfaces, the jam mend in the conical recess in the proximal End of the shaft can be used. The invention Peculiarity is that at the end of the in the Project recess in the proximal end of the shaft the spherical surface arranged on the outside surface of a ring is formed, which is an eccentric Has recess in which one at the end of the extension arranged pin engages. By twisting the like eccentrically held ring can be the alignment of the pin to the spherical outer surface of this Change ring and thus practically the angle with which the extension in the conical recess in the proximal end of the shaft protrudes. Since the in the cone shaped recess in the ball head protruding and a additional conical pins of the connecting part into the recess in the proximal end of the sheep tes protruding extension is connected also its alignment with respect to the shaft Twisting the ring with the spherical outer wall change and the anatomical conditions of the Pa adjust clients.
In äquivalenter Weise kann auch die Verdickung durch eine exzentrisch gehaltenen Ring mit einer kugelförmigen Außenfläche gebildet sein. Es ist sogar mög lich, daß beide Kugelflächen an den Außenflächen von exzentrisch gehaltenen verdrehbaren Ringen gebildet sind, wodurch die maximal einstellbare Winkellage des den Kugelkopf haltenden Konuszapfens vergrößerbar ist.Equally, the thickening can by an eccentrically held ring with a spherical Be formed outer surface. It is even possible Lich that both spherical surfaces on the outer surfaces of eccentrically held rotatable rings are, whereby the maximum adjustable angular position of the the cone pin holding the ball head can be enlarged.
Nach dem Einsetzen des Fortsatzes in die konusför mige Ausnehmung in dem proximalen Ende des Schaftes klemmt die Verdickung mit ihrer kugelförmigen Außen fläche fest und ist damit nicht nur spielfrei festge halten, sondern auch gegen Verdrehung gesichert. In gleicher Weise klemmt auch die kugelförmige Außenfläche des Ringes in der konusförmigen Ausnehmung in dem pro ximalen Ende des Schaftes, so daß er sich nicht auf dem ihn haltenden Zapfen drehen kann, so daß auch die ra diale Ausrichtung des Zapfens am Ende des Fortsatzes und als Folge davon auch die Winkellage des Fortsatzes in bezug zu der konusförmigen Ausnehmung in dem proxi malen Ende des Schaftes fixiert ist.After inserting the extension into the cone-shaped recess in the proximal end of the shaft clamps the thickening with its spherical exterior surface and is therefore not only fixed without play hold, but also secured against rotation. In the spherical outer surface also clamps of the ring in the conical recess in the pro ximal end of the shaft so that it is not on the can turn him holding pin, so that the ra diale alignment of the pin at the end of the extension and as a result the angular position of the extension with respect to the conical recess in the proxi paint end of the shaft is fixed.
Zusätzlich sieht eine Weiterbildung der Erfindung vor, daß Umfangsrastmittel vorgesehen sind zur Einra stung der Drehlage des Ringes in bezug zu dem Zapfen und/oder zu dem Fortsatz. Diese Umfangsrastmittel bie ten eine zusätzliche Sicherheit in eingesetztem Zustand und können außerdem eine Verdrehung des Ringes vor dem Einsetzen verhindern.In addition, a further development of the invention provides before that circumferential locking means are provided for engaging the rotational position of the ring in relation to the pin and / or to the extension. This circumferential locking means bie additional security when in use and can also twist the ring before Prevent insertion.
Die Umfangsrastmittel können zweckmäßigerweise durch eine gezahnte Außenfläche des Zapfens und eine komplementär gezahnte Innenfläche in dem Ring gebildet sein. Eine andere zweckmäßige Form der Umfangsrastmit tel besteht gemäß einer Weiterbildung der Erfindung darin, daß ein dem Ring axial gegenüberliegender axia ler Zahnkranz und an dem Ring wenigstens ein axialer Fortsatz zum axialen Eingriff in den Zahnkranz vorgese hen sind. The circumferential locking means can expediently by a toothed outer surface of the pin and a complementary toothed inner surface formed in the ring his. Another expedient form of the circumferential catch tel exists according to a development of the invention in that an axia axially opposite the ring ler ring gear and at least one axial on the ring Extension for axial engagement in the ring gear hen are.
Um den Ring vor dem Einsetzen insbesondere nach Ineingriffbringen der Umfangsrastmittel an seinem Zap fen in axialer Lage zu halten, sind gemäß einer Aus führungsform der Erfindung axiale Rastmittel zur axia len Rastverbindung des Ringes mit dem Zapfen vorgese hen.To insert the ring in particular after Engaging the circumferential locking means on its zap fen in an axial position are according to an off leadership form of the invention axial locking means for axia len snap connection of the ring with the spigot hen.
Anhand der Zeichnung soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden.Based on the drawing, the invention is intended to Embodiment will be explained in more detail.
Fig. 1 zeigt teilweise im Schnitt ein Ausfüh rungsbeispiel der Erfindung, Fig. 1 shows partially in section an Ausfüh approximately example of the invention,
Fig. 2 zeigt vergrößert in Einzeldarstellung das aus Fig. 1 ersichtliche Verbindungs teil vor dem Einsetzen, Fig. 2 shows an enlarged detail view in which seen in FIG. 1 connection part prior to insertion,
Fig. 3 zeigt das Verbindungsteil gemäß Fig. 2 nach dem Einsetzen in Verbindung mit dem zugehörigen Konusteil in einer ersten Winkellage, und FIG. 3 shows the connecting part according to FIG. 2 after insertion in connection with the associated conical part in a first angular position, and
Fig. 4 entspricht Fig. 3 und zeigt das Verbin dungsteil in einer zweiten Winkellage. Fig. 4 corresponds to Fig. 3 and shows the connec tion part in a second angular position.
Fig. 1 zeigt den oberen Teil eines Schaftes 2 ei ner Hüftgelenk-Endoprothese sowie einen Kugelkopf 4, der über ein Verbindungsteil 6 mit dem Schaft 2 verbun den ist. Das Verbindungsteil 6 weist einen Konuszapfen 8 zum Einsetzen in eine konusförmige Ausnehmung 10 in dem Kugelkopf 4 sowie an seinem anderen Ende einen Fortsatz 12 auf, an dem sich eine Verdickung 14 mit einer kugelförmigen Außenfläche 16 befindet, deren Durchmesser etwas kleiner ist als der größte Durchmes ser einer konusförmigen Ausnehmung 18 in einem ge schnitten gezeigten Konusteil 20, das in das proximale Ende des Schaftes 2 eingebettet ist. Fig. 1 shows the upper part of a shaft 2 egg ner hip joint endoprosthesis and a ball head 4 , the verbun via a connecting part 6 with the shaft 2 is the. The connecting part 6 has a conical pin 8 for insertion into a conical recess 10 in the ball head 4 and at its other end an extension 12 on which there is a thickening 14 with a spherical outer surface 16 , the diameter of which is slightly smaller than the largest diameter ser a conical recess 18 in a cut section shown GE 20 , which is embedded in the proximal end of the shaft 2 .
Der Fortsatz 12 weist an seinem Ende einen Zapfen 22 auf, auf dem ein Ring 24 mit einer exzentrischen Bohrung 26 sitzt und durch Rastmittel 28 axial gehalten ist. Der Ring 24 weist eine kugelförmige Außenfläche 30 auf, mit der er in der konusförmigen Ausnehmung 18 klemmt. Somit ist insgesamt das Verbindungsteil 6 durch die in der konusförmigen Ausnehmung 18 klemmenden ku gelförmigen Außenflächen 16 und 30 eingeklemmt und ge halten.The extension 12 has at its end a pin 22 on which a ring 24 with an eccentric bore 26 is seated and is held axially by locking means 28 . The ring 24 has a spherical outer surface 30 with which it clamps in the conical recess 18 . Thus, overall the connecting part 6 is clamped and held by the conical recess 18 in the conical outer surface 16 and 30 .
Fig. 2 zeigt das Verbindungsteil aus Fig. 1 in vergrößerter Darstellung, so daß besser die Rastmittel 28 und darüber hinaus ein Zahnkranz 32 an dem Fortsatz 12 erkennbar ist, mit dem in verschiedenen Drehlagen des Ringes 24 ein an diesem angeordneter Fortsatz 34 axial in Eingriff bringbar ist. In der Darstellung in Fig. 2 ist der Ring 24 etwas entfernt von dem Zahnkranz 32 dargestellt, so daß der Ring 24 auf dem Zapfen 22 drehbar und in einer gewünschten Drehlage durch axiales Verschieben in den Zahnkranz einrastbar ist. Im einge rasteten Zustand kommen auch die Rastmittel 28 zum Ein rasten und halten somit in axialer Lage den Ring 24 auf seinem Zapfen 22. Fig. 2 shows the connecting part of Fig. 1 in an enlarged view, so that the locking means 28 and moreover a ring gear 32 on the extension 12 can be seen, with which in different rotational positions of the ring 24 an extension 34 arranged thereon axially engaged is feasible. In the illustration in Fig. 2, the ring 24 is shown somewhat distant from the ring gear 32 , so that the ring 24 is rotatable on the pin 22 and can be locked in a desired rotational position by axial displacement in the ring gear. In the engaged state, the locking means 28 come to a stop and thus hold the ring 24 in its axial position on its pin 22 .
Fig. 3 zeigt in gleicher Vergrößerung das Verbin dungsteil 6 zusammen mit dem Konusteil 20, wobei jedoch der Ring 24 axial eingerastet ist und somit der Fort satz 34 mit dem Zahnkranz 32 in Eingriff steht, so daß der Ring 24 in Umfangsrichtung gesichert ist. Fig. 3 shows the same enlargement the connec tion part 6 together with the cone part 20 , but the ring 24 is axially engaged and thus the extension 34 is in engagement with the ring gear 32 so that the ring 24 is secured in the circumferential direction.
Aus Fig. 3 ist ersichtlich, daß aufgrund der ex zentrischen Anordnung der Bohrung 26 der Fortsatz 12 in der Zeichnung nach unten geneigt ist, so daß der Ko nuszapfen 8 eine axiale Ausrichtung in bezug zu der konusförmigen Ausnehmung 18 hat.From Fig. 3 it can be seen that due to the ex-centric arrangement of the bore 26 of the extension 12 in the drawing is inclined downward, so that the Ko nuszapfen 8 has an axial orientation with respect to the conical recess 18 .
Fig. 4 entspricht Fig. 3, unterscheidet sich je doch von dieser dadurch, daß der Ring 24 um 180° ge dreht ist, so daß der Fortsatz 12 in der Zeichnung nach oben geneigt ist mit der Folge, daß der Konuszapfen 8 nach unten geneigt ist, im dargestellten Fall um 15°. Fig. 4 corresponds to Fig. 3, but differs from this in that the ring 24 is rotated by 180 ° GE, so that the extension 12 is inclined upwards in the drawing, with the result that the conical pin 8 is inclined downwards is, in the case shown by 15 °.
Bei Verwendung der in den Fig. 1 bis 4 dargestell ten Hüftgelenk-Endoprothese wird nach Implantation des Schaftes 2 das Verbindungsteil 6 in gewünschter Um fangsrastlage des Ringes 24 in die konusförmige Aus nehmung 18 des Konusteils 20 in dem proximalen Ende des Schaftes 2 eingesetzt und die gewünschte Drehlage des Fortsatzes 12 in der konusförmigen Ausnehmung 18 her gestellt. Ist diese erreicht, so wird beispielsweise durch einen Schlag auf den Konuszapfen 8 eine Verklem mung zwischen den kugelförmigen Flächen 16 und 30 und der konischen Innenfläche des Konusteils 20 her gestellt, so wie das bei einem üblichen Konus ge schieht. Danach wird der Kugelkopf 4 auf den Konuszap fen 8 aufgesetzt und verklemmt.When using the dargestell th in FIGS. 1 to 4 hip endoprosthesis of the shaft 2, the connecting portion 6 in the desired order to catch latching position of the ring 24 in the conical From recess 18 after implantation of the cone portion inserted into the proximal end of the shaft 2 20 and the Desired rotational position of the extension 12 in the conical recess 18 ago ago. If this is achieved, a jamming between the spherical surfaces 16 and 30 and the conical inner surface of the conical part 20 is made here, for example by a blow to the conical pin 8 , as happens with a conventional cone. Then the ball head 4 is placed on the Konuszap fen 8 and jammed.
Claims (5)
mit einem Schaft,
mit einer konusförmigen Ausnehmung im proxi malen Ende des Schaftes,
mit einem Kugelkopf,
mit einer konusförmigen Ausnehmung in dem Ku gelkopf und
mit einem Verbindungsteil, das einen zu der konusförmigen Ausnehmung in dem Kugelkopf komplementären Konuszapfen zum Einsetzen in die konusförmige Ausnehmung in dem Kugelkopf und einen Fortsatz zum Einsetzen in die ko nusförmige Ausnehmung in dem proximalen Ende des Schaftes aufweist,
dadurch gekennzeichnet,
daß der Fortsatz (12) entfernt von seinem Ende eine Verdickung (14) mit einer kugelför migen Außenfläche (16) aufweist, deren Durch messer kleiner ist als der größte Durchmesser der konusförmigen Ausnehmung (18) in dem pro ximalen Ende des Schaftes (2),
daß der Fortsatz (12)an seinem Ende einen Zapfen (22) aufweist, der in eine komplemen täre exzentrische Ausnehmung (26) in einem Ring (24) eingreift, dessen Außenfläche (30) kugelförmig ist und einen Durchmesser hat, der größer ist als der kleinste Durchmesser der konusförmigen Ausnehmung (18) in dem proximalen Ende des Schaftes (2), jedoch kleiner als der Durchmesser der kugelförmigen Außenfläche (16) der Verdickung (14), und
daß die Durchmesser der kugelförmigen Außen flächen (16, 30) der Verdickung (14) und des Ringes (24) und deren Abstand zueinander so bemessen ist, daß bei in die konusförmige Ausnehmung (18) in dem proximalen Ende des Schaftes (2) eingesetztem Fortsatz (12) beide kugelförmigen Außenflächen (16, 30) in der konusförmigen Ausnehmung (18) in dem proxima len Ende des Schaftes (2) fest klemmen.1. hip joint endoprosthesis,
with a shaft,
with a conical recess in the proximal end of the shaft,
with a ball head,
with a conical recess in the Ku gelkopf and
with a connecting part which has a conical pin which is complementary to the conical recess in the spherical head for insertion into the conical recess in the spherical head and an extension for insertion into the conical recess in the proximal end of the shaft,
characterized by
that the extension ( 12 ) from its end has a thickening ( 14 ) with a kugelför shaped outer surface ( 16 ) whose diameter is smaller than the largest diameter of the conical recess ( 18 ) in the pro ximal end of the shaft ( 2 ) .
that the extension ( 12 ) has at its end a pin ( 22 ) which engages in a complementary eccentric recess ( 26 ) in a ring ( 24 ) whose outer surface ( 30 ) is spherical and has a diameter which is greater than the smallest diameter of the conical recess ( 18 ) in the proximal end of the shaft ( 2 ), but smaller than the diameter of the spherical outer surface ( 16 ) of the thickened portion ( 14 ), and
that the diameter of the spherical outer surfaces ( 16 , 30 ) of the thickening ( 14 ) and the ring ( 24 ) and their distance from one another is such that when inserted into the conical recess ( 18 ) in the proximal end of the shaft ( 2 ) Extension ( 12 ) firmly clamp both spherical outer surfaces ( 16 , 30 ) in the conical recess ( 18 ) in the proximal end of the shaft ( 2 ).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10045678A DE10045678C1 (en) | 2000-09-15 | 2000-09-15 | Hip joint prosthesis has a shaft with conical recess at proximal end and ball head with conical recess and has connecting part with conical pin to fit in ball head and has projection to fit in shaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10045678A DE10045678C1 (en) | 2000-09-15 | 2000-09-15 | Hip joint prosthesis has a shaft with conical recess at proximal end and ball head with conical recess and has connecting part with conical pin to fit in ball head and has projection to fit in shaft |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10045678C1 true DE10045678C1 (en) | 2002-02-14 |
Family
ID=7656321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10045678A Expired - Fee Related DE10045678C1 (en) | 2000-09-15 | 2000-09-15 | Hip joint prosthesis has a shaft with conical recess at proximal end and ball head with conical recess and has connecting part with conical pin to fit in ball head and has projection to fit in shaft |
Country Status (1)
Country | Link |
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DE (1) | DE10045678C1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1364630A2 (en) * | 2002-05-22 | 2003-11-26 | ESKA Implants GmbH & Co. | Positioning aid for prosthetic joint |
WO2005082290A3 (en) * | 2004-02-19 | 2005-12-22 | Mathys Ag | Femur component of a hip joint endoprosthesis comprising a non-circular or eccentric abutment region |
DE102004038281B3 (en) * | 2004-08-03 | 2006-05-11 | Endoplant Gmbh | Femoral neck prosthesis for an artificial hip joint comprises an implantable shaft which is curved and has a proximal region with a polygonal cross-section and a distal region with a round cross-section |
WO2014070616A1 (en) * | 2012-10-30 | 2014-05-08 | Meulink Steven L | Orthopedic connections |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0201407A1 (en) * | 1985-04-24 | 1986-11-12 | Patrick Montagne | Set of parts for forming a femoral prosthesis |
DE3600804C1 (en) * | 1986-01-14 | 1987-08-13 | Orthoplant Endoprothetik | Hip joint prosthesis with condyle connector |
EP0457222A1 (en) * | 1990-05-18 | 1991-11-21 | Intraplant AG | Hip prosthesis |
EP0797964A1 (en) * | 1996-03-26 | 1997-10-01 | Groupe Lepine | Assembly of elements for the formation of a total hip prosthesis |
DE69514621T2 (en) * | 1994-10-12 | 2000-08-03 | Didier Prost | Femoral shaft for hip prosthesis |
-
2000
- 2000-09-15 DE DE10045678A patent/DE10045678C1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0201407A1 (en) * | 1985-04-24 | 1986-11-12 | Patrick Montagne | Set of parts for forming a femoral prosthesis |
DE3600804C1 (en) * | 1986-01-14 | 1987-08-13 | Orthoplant Endoprothetik | Hip joint prosthesis with condyle connector |
EP0457222A1 (en) * | 1990-05-18 | 1991-11-21 | Intraplant AG | Hip prosthesis |
DE69514621T2 (en) * | 1994-10-12 | 2000-08-03 | Didier Prost | Femoral shaft for hip prosthesis |
EP0797964A1 (en) * | 1996-03-26 | 1997-10-01 | Groupe Lepine | Assembly of elements for the formation of a total hip prosthesis |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1364630A2 (en) * | 2002-05-22 | 2003-11-26 | ESKA Implants GmbH & Co. | Positioning aid for prosthetic joint |
EP1364630A3 (en) * | 2002-05-22 | 2006-03-15 | ESKA Implants GmbH & Co. | Positioning aid for prosthetic joint |
WO2005082290A3 (en) * | 2004-02-19 | 2005-12-22 | Mathys Ag | Femur component of a hip joint endoprosthesis comprising a non-circular or eccentric abutment region |
DE102004038281B3 (en) * | 2004-08-03 | 2006-05-11 | Endoplant Gmbh | Femoral neck prosthesis for an artificial hip joint comprises an implantable shaft which is curved and has a proximal region with a polygonal cross-section and a distal region with a round cross-section |
WO2014070616A1 (en) * | 2012-10-30 | 2014-05-08 | Meulink Steven L | Orthopedic connections |
US10136933B2 (en) | 2012-10-30 | 2018-11-27 | Zimmer, Inc. | Orthopedic connections |
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