DE2628284C2 - Endoprothese zum Einsatz in einen Knochenschaft - Google Patents
Endoprothese zum Einsatz in einen KnochenschaftInfo
- Publication number
- DE2628284C2 DE2628284C2 DE2628284A DE2628284A DE2628284C2 DE 2628284 C2 DE2628284 C2 DE 2628284C2 DE 2628284 A DE2628284 A DE 2628284A DE 2628284 A DE2628284 A DE 2628284A DE 2628284 C2 DE2628284 C2 DE 2628284C2
- Authority
- DE
- Germany
- Prior art keywords
- bone
- metal
- endoprosthesis
- shaft
- metal shaft
- 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
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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30907—Nets or sleeves applied to surface of prostheses or in cement
-
- 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
-
- 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
- A61F2/3094—Designing or manufacturing processes
-
- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/367—Proximal or metaphyseal parts of shafts
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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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/3676—Distal or diaphyseal parts of shafts
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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
- A61F2/28—Bones
- A61F2002/2835—Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
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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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30062—(bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
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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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30062—(bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
- A61F2002/30064—Coating or prosthesis-covering structure made of biodegradable material
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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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30084—Materials having a crystalline structure
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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
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30138—Convex polygonal shapes
- A61F2002/30154—Convex polygonal shapes square
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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
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30138—Convex polygonal shapes
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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
- A61F2002/30108—Shapes
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- A61F2002/30179—X-shaped
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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
- A61F2002/30108—Shapes
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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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- A61F2002/30316—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
- A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
-
- A—HUMAN NECESSITIES
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- 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
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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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- 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
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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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- 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
- A61F2/30—Joints
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- A61F2002/3678—Geometrical features
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-
- 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
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- A61F2210/0004—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof bioabsorbable
-
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- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- A—HUMAN NECESSITIES
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- 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
- A61F2220/0058—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0017—Angular shapes
- A61F2230/0021—Angular shapes square
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0017—Angular shapes
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-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/0058—X-shaped
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
- A61F2230/006—Y-shaped
-
- 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
-
- 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
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of 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)
- Materials For Medical Uses (AREA)
- Prostheses (AREA)
Description
Die Erfindung bezieht sich auf eine Endoprothese gemaß
dem Oberbegriff des Patentanspruchs, die Ober einen Metallschaft in einem Knochenschaft befestigt werden
soll.
In der US-PS 37 40 769 ist ein Metallschaft zum Einsatz in den Oberschenkelhalsknochen für eine Hüftprothese
beschrieben, der einen kreuzförmigen Querschnitt aufweist und somit vier in Längsrichtung verlaufende
Vertiefungen besitzt, die mit mit Hilfe von dehydratisiertem Knochenpulver verklebten Knochenstückchen
gefüllt werden, die sich mit dem verbliebenen Knochengewebe fest verbinden sollen und auf diese Weise für
eine einwandfreie Befestigung des Metallschafts im Oberschenkelhalsknochen sorgen sollen. Man erreicht
mit dieser Anordnung jedoch nicht an allen Stellen, an denen das Knochenmaterial mit dem Metallschaft in
Berührung steht, eine zufriedenstellende Befestigung; außerdem entsteht hierbei eine kompakte Struktur, die
keine für die Durchdringung mit Blutgefäßen zur Blutversorgung des sich bildenden Knochengewebes notwendige
Lücken aufweist so daß die nachwachsenden Knochenzellen wegen der schlechten Blutversorgung
relativ kurzlebig sind und sich an manchen Stellen im Kontakt mit dem Metallschaft ein Bindegewebe bildet,
das keine ausreichende Haftung des Schafts im Knochen gewährleistet Man kann auf diese Weise also keine
sehr stabile und starre Befestigung des Metallschafts im Knochen erreichen. Wenn sich aber der Metallschaft
geringfügig im Knochengewebe bewegen kann, dann führen diese Bewegungen zu einer erneuten Zerstörung
von Knochengewebe, so daß nach einer gewissen Zeit der Metallschaft seine feste Bindung mit dem Knochen
verliert Der Patient muß sich daraufhin erneut operieren lassen, damit der Metallschaft wieder im Knochen
befestigt wird.
Aus der DE-OS 24 04 214 ist eine Endoprothese nach dem Oberbegriff des Patentanspruchs bekannt, bei der
das Gitter auf dem Metallschaft aufliegt. Aufgrund der mit dem Gitter erzielten Erhöhten Oberflächenrauhigkeit
soll die Verankerung des Schaftes im Knochen verbessert werden. Da das Gitter aber nur auf konvex gekrümmten
Oberflächen sauber aufliegt, bedeutet der Verzicht auf konkave Bereiche eine Verringerung der
Drehfestigkeit.
Aus der DE-OS 20 08 010 ist eine Endoprothese bekannt, die aus einem Metallkern und einem Hydroxylapatit-Überzug
besteht, der ein Anwachsen von Knochen an der Prothese erleichtern soll.
12 93 396, daß bestimmte Polymere, insbesondere PoIyglykolsäure,
bioresorbierbare Eigenschaften besitzen und als bioresobierbare chirurgische Erzeugnisse verwendet
werden können. Dort ist insbesondere an Nahtmaterial,
aber auch an ganze Endoprothcsen in Form von Stäben, Platten, Schrauben oder Ringen zum Ersatz
und zur Stütze menschlicher Organe gedacht.
Aufgabe der Erfindung ist es ausgehend von dem aus der DE-OS 24 04 214 entnehmbaren Stand der Technik.
eine Endoprothese nach dem Oberbegriff des Patentanspruchs anzugeben, die eine höhere Drehfestigkeil ergibt
als die aus der soeben genannten DE-OS bekannte Endoprothese, und die andererseits das Nachwachsen
von Knochenzellen auf der Prothesenoberflächc auch dann ermöglicht wenn, wie in der US-PS 37 40 769 gezeigt
der Metallschaft der Prothese mit die Drehfestigkeit fördernden Längsrillen versehen ist
Diese Aufgabe wird durch die im kennzeichnenden Teil des Patentanspruchs angegebenen Merkmale gelöst
Das Metallgitter hat in der erfindungsgemäßen Endoprothese also nicht die Funktion, die Rauhigkeit und
damit die Haftungsfähigkeit der Schaftoberfläche zu erhöhen, sondern soll in erster Linie resorbierbares Material
während der Resorptionsphase des Heilungsprozesses in den Vertiefungen festhalten.
Nachfolgend wird ein Ausführungsbeispie! der Erfindung unter Bezugnahme auf die Figuren näher erläutert
F i g. la zeigt in Seitenansicht eine erfindungsgemäße
Endoprothese mit einem Metallschaft der von einem Metallgitter umgeben ist wobei letzteres teilweise entfernt
dargestellt ist
Fig. Ib zeigt einen Schnitt durch die Endoprothese
ausFig. la.
F i g. 2 zeigt den Y-förmigen Querschnitt einer weiteren erfindungsgemäßen Endoprothese.
Die Endoprothese gemäß Fig. la und Ib besteht aus
einem Metallschaft 1, der in einen Oberschenkelhalsknochen eingesetzt werden soll, und einem Gelenkkugelkopf
2, der mit dem Metallschaft 1 über einen Hals 3A verbunden ist Dieser ist mit einem Verbindungsteil
3ß versehen, das im Inneren des Gelenkkugelkopfes 2 durch ein geeignetes Mittel, beispielsweise durch Einschrauben
in ein auf der Innenseite des Gelenkkugelkopfes 2 um ein in diesen Gelenkkugelkopf 2 eingearbeitetes
Sackloch herum geschweißtes Metalleinsatzteil, befestigt ist Der Metallschaft selbst weist einen
kreuzförmigen Querschnitt auf und besitzt vier Rippen 4,5,6,7, die zwischen sich Vertiefungen 8,9,10 und 11
aufweisen. Auf die Rippen 4,5,6,7 ist ein Metallgitter 12
aufgeschweißt beispielsweise durch Elektronenschweißen. Dieses Metallgitter hat Löcher 15, deren Durchmesser
mindestens 03 mm beträgt und die für den Blutkreislauf den Weg in die Vertiefungen 8, 9, 10 und U
freigeben. Die Vertiefungen sind mit einem Material gefüllt, das das Nachwachsen von Knochenzellen begünstigt
beispielsweise mit einem biologisch abbaubaren organischen Stoff, der in die Vertiefungen 8,9,10,11
eingegossen wird; bei diesem organischen Stoff kann es sich beispielsweise um Polymilchsäure oder Polyglykolsäure,
um ein Polyaktid der allgemeinen Formel
CH3
CH3
—C—C—O—C—C-O—
H O
H Ö
oder um ein Polyglykolid nach der allgemeinen Formel
Il Il
ο ο
handeln. Dieses Material kann aber auch aus Trikalziumphosphat
oder mono- oder polykristallinen Fasern, insbesondere Kohlenstoffasern, bestehen.
Der in F i g. 2 dargestellte Metallschaft 20 weist einen Y-förmigen Querschnitt mit einer verdickten Basis und
zwei Rippen 21 und 22 auf. Die länglichen Vertiefungen 24,25,26 sind mit einem am Stab angeschweißten Metallgitter
23 versehen. Vor dem Befestigen des Metallgitters 23 kann auf den Metallschaft 20 eine Aiuminiumoxidbeschichtung
durch Plasmabeschuß aufgebracht werden. Das Metallgitter 23 kann mit einem biologisch
abbaubaren, das Knochenzellenwachstum begünstigenden organischen Stoff imprägniert sein.
Die erfindungsgemäße Endoprothese i >t nicht nur auf
H Oftprothesen anwendbar, sondern auch auf Endoprothese für die Schulter, den Oberarm, den Oberschenkelhalsknochen
und den Schienbeinknochen.
Hierzu 1 Blatt Zeichnungen
25
30
35
40
45
50
55
60
Claims (1)
- Patentanspruch:Endoprothese zum Einsatz in einem Knochenschaft, bestehend aus einem Metallschaft und einem Metallgitter, das den Metallschaft umgibt und dessen Lochdurchmesser mindestens 03 nun beträgt, dadurch gekennzeichnet, daß der Metallschaft (1,20) mindestens zwei in Längsrichtung verlaufende Vertiefungen (8, 9, 10,11; 24, 25, 26) aufweist. Ober die das Metallgitter (12; 23) gespannt ist und mit deren Rändern das Metallgitter (12; 23) verbunden ist, und daß die Vertiefungen (8,9,10,11; 24, 25, 26) mit einem biologisch abbaubaren Material gefüllt sind
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7520676A FR2315902A1 (fr) | 1975-07-01 | 1975-07-01 | Tige metallique d'insertion dans un os long pour prothese |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2628284A1 DE2628284A1 (de) | 1977-01-27 |
DE2628284C2 true DE2628284C2 (de) | 1985-12-05 |
Family
ID=9157349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2628284A Expired DE2628284C2 (de) | 1975-07-01 | 1976-06-24 | Endoprothese zum Einsatz in einen Knochenschaft |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE876682Q (de) |
DE (1) | DE2628284C2 (de) |
FR (1) | FR2315902A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3704089A1 (de) * | 1987-02-10 | 1988-08-25 | Claus Fahrer | Heterologes implantat |
DE3804239A1 (de) * | 1988-02-11 | 1989-08-24 | Karl Heinrich Prof Dr Taeger | Gelenkpfannenteil fuer eine gelenkprothese |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2383656A1 (fr) * | 1977-03-16 | 1978-10-13 | Ceraver | Tige metallique en titane ou alliage de titane pour fixation sans ciment dans un os long pour prothese articulaire et materiel de reparation osseuse |
SE408013B (sv) * | 1977-09-27 | 1979-05-14 | Branemark Per Ingvar | I ett benurtag, insettbart berarelement for upptagande av en protes |
FR2429589A1 (fr) * | 1978-06-29 | 1980-01-25 | Ceraver | Tige en titane ou alliage de titane pour fixation sans ciment dans un os long pour prothese |
DE2862446D1 (en) * | 1978-06-29 | 1984-11-15 | Osteo Ag | Carbon fiber reinforced bone cement |
DE2842847C2 (de) * | 1978-10-02 | 1983-12-01 | Adolf Dr.Med. 6250 Limburg Voorhoeve | Prothesenverankerungselement |
EP0012146A1 (de) * | 1978-11-23 | 1980-06-25 | Osteo Ag | Zementfrei implantierbare, mit Tragrippen versehene Prothese zum Ersatz eines Gelenkes und Verfahren zur Herstellung dieser Prothesen |
SU848004A1 (ru) * | 1979-01-04 | 1981-07-23 | Всесоюзный Научно-Исследовательскийи Испытательный Институт Медицинскойтехники | Соединительный элемент дл фиксацииКОСТНОй ТКАНи |
DE3061944D1 (en) * | 1979-03-15 | 1983-03-24 | Sulzer Ag | Hose-like lining for the anchoring shank of an endoprosthesis |
CH645265A5 (de) * | 1980-04-29 | 1984-09-28 | Sulzer Ag | Verankerungselement eines knochenimplantates. |
ATE23945T1 (de) * | 1981-07-30 | 1986-12-15 | Ceraver | Protheseschaft aus titan oder titanlegierung fuer zementfreie befestigung in einem langen knochen. |
US4990161A (en) * | 1984-03-16 | 1991-02-05 | Kampner Stanley L | Implant with resorbable stem |
DE3423667A1 (de) * | 1984-05-08 | 1985-11-28 | Rüdiger Dipl.-Ing. 5204 Lohmar Scheunemann | Implantat fuer knochen- und zahnwurzelersatz mit spezieller uebergangsstruktur zwischen knochen und implantatkern und knochenseitig ganz oder teilweise resorbierbarer matrix |
FR2569978B1 (fr) * | 1984-09-10 | 1989-02-24 | Fournier Jacques Andre | Implant pour prothese coxo-femorale |
DE3533369A1 (de) * | 1985-09-19 | 1987-03-19 | Alois Prof Dr Med Bloemer | Antibioticahaltiges mittel und seine verwendung als chirurgisches kunststoffmaterial |
DE8600970U1 (de) * | 1986-01-16 | 1986-02-20 | Waldemar Link GmbH & Co, 22339 Hamburg | Knochenimplantat |
DE3629813A1 (de) * | 1986-09-02 | 1988-03-10 | Friedrichsfeld Gmbh | Implantat aus titan mit drahtfoermigen oberflaechenkonstrukturen |
US5201771A (en) * | 1989-09-15 | 1993-04-13 | Belykh Sergei I | Endoprosthesis of the hip joint |
EP0466638A1 (de) * | 1990-07-11 | 1992-01-15 | Gebrüder Sulzer Aktiengesellschaft | Femurkopfprothese |
US5571193A (en) * | 1992-03-12 | 1996-11-05 | Kampner; Stanley L. | Implant with reinforced resorbable stem |
EP0603976A3 (de) * | 1992-12-21 | 1995-01-25 | Bristol Myers Squibb Co | Zum Teil resorbierbares Implantat. |
CH688539A5 (de) * | 1994-04-19 | 1997-11-14 | Werner Hermann | Femurprothese. |
FR2739276B1 (fr) * | 1995-09-29 | 1998-01-16 | Hy Xavier | Prothese totale de hanche |
US6132469A (en) * | 1997-11-07 | 2000-10-17 | Biomet, Inc. | Acetabular liner extractor |
DE19928791A1 (de) | 1999-04-13 | 2000-11-02 | Plus Endoprothetik Ag Rotkreuz | Blattartiger Schaft einer Hüftgelenkprothese für die Verankerung im Femur |
US7494510B2 (en) | 2000-04-13 | 2009-02-24 | Smith And Nephew Orthopaedics Ag | Leaflike shaft of a hip-joint prosthesis for anchoring in the femur |
FR2855396B1 (fr) * | 2003-06-02 | 2006-10-06 | Nikola Despot | Tige femorale autostable pour prothese de la hanche pour l'homme ou tous autres autres animaux, en particulier le chien |
US8187336B2 (en) | 2003-06-16 | 2012-05-29 | Jamali Amir A | Device and method for reconstruction of osseous skeletal defects |
US20050010304A1 (en) * | 2003-06-16 | 2005-01-13 | Jamali Amir Ali | Device and method for reconstruction of osseous skeletal defects |
US20130304228A1 (en) * | 2012-05-08 | 2013-11-14 | Zimmer, Inc. | Bone joint prosthesis and method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1293396C2 (de) * | 1963-10-31 | 1978-06-22 | American Cyanamid Company, Wayne, N.J. (V.St.A.) | Resorbierbares chirurgisches material |
DE2008010C3 (de) * | 1970-02-20 | 1980-07-10 | Schneider Gmbh & Co, 5020 Frechen | Verfahren zur Herstellung von Dentalimplantaten |
US3707006A (en) * | 1970-08-26 | 1972-12-26 | Gulf Oil Corp | Orthopedic device for repair or replacement of bone |
US3740769A (en) * | 1971-02-11 | 1973-06-26 | E Haboush | Prosthesis for hip joints |
FR2215927B1 (de) * | 1973-01-31 | 1976-05-14 | Louyot Comptoir Lyon Alemand |
-
1975
- 1975-07-01 FR FR7520676A patent/FR2315902A1/fr active Granted
-
1976
- 1976-06-24 DE DE2628284A patent/DE2628284C2/de not_active Expired
-
1979
- 1979-05-31 BE BE1/9410A patent/BE876682Q/xx not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3704089A1 (de) * | 1987-02-10 | 1988-08-25 | Claus Fahrer | Heterologes implantat |
DE3804239A1 (de) * | 1988-02-11 | 1989-08-24 | Karl Heinrich Prof Dr Taeger | Gelenkpfannenteil fuer eine gelenkprothese |
DE3903832A1 (de) * | 1988-02-11 | 1990-08-16 | Karl Heinrich Prof Dr Taeger | Gelenkpfannenteil fuer eine gelenkprothese |
Also Published As
Publication number | Publication date |
---|---|
FR2315902A1 (fr) | 1977-01-28 |
BE876682Q (fr) | 1979-09-17 |
DE2628284A1 (de) | 1977-01-27 |
FR2315902B1 (de) | 1978-05-19 |
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