DE19932388C1 - Oberschenkelstumpf-Endoprothese - Google Patents

Oberschenkelstumpf-Endoprothese

Info

Publication number
DE19932388C1
DE19932388C1 DE1999132388 DE19932388A DE19932388C1 DE 19932388 C1 DE19932388 C1 DE 19932388C1 DE 1999132388 DE1999132388 DE 1999132388 DE 19932388 A DE19932388 A DE 19932388A DE 19932388 C1 DE19932388 C1 DE 19932388C1
Authority
DE
Germany
Prior art keywords
thigh
stump
endoprosthesis
stem part
housed
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
Application number
DE1999132388
Other languages
English (en)
Inventor
Hans Grundei
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.)
ORTHODYNAMICS GMBH, DE
Original Assignee
Eska Implants GmbH and Co KG
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
Priority claimed from DE19857907A external-priority patent/DE19857907C1/de
Application filed by Eska Implants GmbH and Co KG filed Critical Eska Implants GmbH and Co KG
Priority to DE1999132388 priority Critical patent/DE19932388C1/de
Priority to AT00936758T priority patent/ATE229775T1/de
Priority to PCT/EP2000/004552 priority patent/WO2001005335A1/de
Priority to EP00936758A priority patent/EP1119319B1/de
Priority to JP2001510395A priority patent/JP2003504153A/ja
Priority to ES00936758T priority patent/ES2186650T3/es
Priority to US09/913,036 priority patent/US6709466B1/en
Priority to DE50000961T priority patent/DE50000961D1/de
Publication of DE19932388C1 publication Critical patent/DE19932388C1/de
Application granted granted Critical
Priority to HK02100810.6A priority patent/HK1039741B/zh
Anticipated expiration legal-status Critical
Expired - Fee Related 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
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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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    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/72—Intramedullary pins, nails or other devices
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    • A61F2002/3006—Properties of materials and coating materials
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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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    • 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
    • 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
    • A61F2230/0069—Three-dimensional shapes cylindrical

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  • Engineering & Computer Science (AREA)
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  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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  • Orthopedic Medicine & Surgery (AREA)
  • Prostheses (AREA)

Abstract

Es wird eine Oberschenkelknochenstumpf-Endoprothese für eine exoprothetische Versorgung eines im Oberschenkelbereich beinamputierten Patienten beschrieben, wobei der Oberschenkelstumpf in einen Schaft ziehbar ist, der sich die Nachbildung eines Unterschenkel- und Fußteils der Prothese anschließt. DOLLAR A Sie weist ein proximales Stielteil (4) auf, das in einen Femurstumpf (5) setzbar ist, wobei das Stielteil zumindest teilweise mit einer offenmaschigen dreidimensionalen Raumnetzstruktur (6) bedeckt ist und an seinem distalen Ende einen konischen Adapter (7) aufweist, mittels dessen Kondylenersatz (8), der die Form (11) natürlicher Kondylen eines Kniegelenks nachempfindet, an das Stielteil (4) koppelbar ist, nach der deutschen Patentanmeldung 19857907.1-35. DOLLAR A Mit dem Kondylenersatz (8) ist eine keilförmige Unterlage (16) mit einem Keilwinkel alpha verbindbar, der die natürliche Valgität des Beines wiederherstellt.

Description

Die vorliegende Erfindung bezieht sich auf eine Oberschenkelstumpf- Endoprothese für eine exoprothetische Versorgung eines im Oberschenkelbereich beinamputierten Patienten. Dabei ist der Oberschenkelstumpf in einen Schaft ziehbar, dem sich die Nachbildung eines Knie-, Unter- und Fußteils der Prothese anschließt. Die Endoprothese weist ein proximales Stielteil auf, das in einen Femurstumpf setzbar ist, wobei das Stielteil zumindest teilweise mit einer offenmaschigen, dreidimensionalen Raumnetzstruktur bedeckt ist und an seinem distalen Ende einen konischen Adapter aufweist, mittels dessen ein Kondylenersatz, der der Form natürlicher Kondylen eines Kniegelenks nachgebildet ist, an das Stielteil gekoppelt ist. Eine derartige Oberschenkelstumpf- Endoprothese ist beschrieben in dem Patent 198 57 907, zu welchem das vorliegende Patent in einem Zusatzverhältnis steht.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, das Wahrnehmungsgefühl des Patienten noch weiterhin zu steigern. Diese Aufgabe wird mit dem Gegenstand des Anspruchs 1 gelöst.
Erfindungsgemäß ist mit dem Kondylenersatz eine keilförmige Unterlage verbunden, welche die natürliche Valgität, d. h. also die Winkelstellung des Femurstumpfes in Richtung medial, wiederherstellt. Hierdurch werden die Kräfteverteilungen den entsprechenden Verteilungen in einem gesunden Bein nachempfunden. Dies bedeutet, daß mit dem Keil eine Parallelität zwischen der Unterseite des Keiles und den Gleitflächen eines künstlichen Kniegelenkes hergestellt werden kann unter weitgehender Beibehaltung des natürlichen CCD- Winkels. Eine Vergleichmäßigung der Belastung entlang der Prothesenachse wird hierdurch erzielt.
Aus dem Bereich der Chirurgie ist ein Implantat bekannt (US 5,766,251), welches als keilförmiges Ausgleichsstück ausgebildet ist, welches Korrekturen beispielsweise hinsichtlich des Valgitätswinkels gestattet. Der Einsatz des keilförmigen Implantates findet unter anderem statt im Gelenkbereich der Tibia, womit das Tibiaplateau dem Neigungswinkel des keilförmigen Implantates entsprechend einseitig angehoben wird. Einen Hinweis auf die Verwendung dieses Implantates bei der Versorgung eines beinamputierten Patienten ist dieser Druckschrift nicht zu entnehmen.
Gemäß einer bevorzugten Ausführungsform liegt der Keilwinkel in einem Bereich zwischen 5 und 9°. Die 5° werden vorzugsweise bei männlichen Patienten, die 9° maximal bei weiblichen Patienten zur Anwendung kommen.
Bevorzugt ist die Unterlage mit der stoßdämpfenden Schicht der Oberschenkelstumpf-Endoprothese verbunden.
Besonders bevorzugt wird die Ausbildung der Unterlage aus einem stoßdämpfenden Kissen, so daß Belastungen nicht direkt in den Femurstumpf eingeleitet werden.
Zu diesem Zwecke ist die Unterlage bevorzugt aus Silikon hergestellt, ebenso wie die optional vorhandene stoßdämpfende Schicht in der Oberschenkelstumpf- Endoprothese gemäß Hauptpatent.
Die Erfindung wird anhand eines Ausführungsbeispiels gemäß der einzigen Zeichnungsfigur beispielhaft näher erläutert.
Die einzige Zeichnungsfigur zeigt schematisch einen Oberschenkelstumpf 1 mit einer in dem Femurstumpf 5 implantierten Oberschenkelstumpf-Endoprothese, wie er im wesentlichen auch im Hauptpatent dargestellt ist. Vorliegend werden dieselben Bezugszeichen verwendet wie im Hauptpatent.
Ein intramedulärer Stiel 4 bildet das proximale Stielteil, welches in den Markraum des Femurstumpfes gesetzt ist. Die Oberfläche des Stielteils 4 ist mit einer offenmaschigen, dreidimensionalen Raumnetzstruktur 6 belegt, durch welche hindurch Knochentrabekel wachsen können, so daß das Stielteil 4 nach einer gewissen Einheilphase, was den Substratfluß betrifft, quasi Bestandteil des natürlichen Knochens geworden ist.
Dem Stielteil 4 schließt sich distalseitig ein konischer Adapter 7 an. Mittels dieses konischen Adapters 7 ist distalseitig der Kondylenersatz 11 mit dem Stielteil 4 gekoppelt.
Das Kondylenersatzteil 8 ist der Form 11 natürlicher Kondylen eines Kniegelenks nachgebildet.
Der Kondylenersatz 8 ist vorliegend mit einer stoßdämpfenden Schicht 10 aus Silikon beschichtet.
Mit dem Kondylenersatz 8 bzw. mit der deckenden stoßdämpfenden Schicht verbunden ist die Unterlage 16. Die Unterlage 16 ist keilförmig ausgebildet und weist einen Keilwinkel zur Horizontalen im Bereich von 5° < α < 9° auf.
Die Unterlage 16 besteht vorliegend aus einem dämpfenden Kissen und unterstützt somit im gezeigten Ausführungsbeispiel die Abdämpfung von Stoßbelastungen auf die Knie-, Unterschenkel- und Fußteile 3. Der Keilwinkel α der Unterlage 16 wird patientenindividuell bestimmt, so, daß die Unterseite 17 der Unterlage 16 im wesentlichen parallel verläuft zu der Ebene der Gleitbahnen der künstlichen Kondylen eines angekoppelten künstlichen Kniegelenks.
Hierdurch wird ein hohes Maß an einer Gleichverteilung der Belastungen in der Gesamtprothese erreicht.

Claims (5)

1. Oberschenkelstumpf-Endoprothese für eine exoprothetische Versorgung eines im Oberschenkelbereich beinamputierten Patienten, wobei der Oberschenkelstumpf (1) in einen Schaft (2) ziehbar ist, dem sich die Nachbildung eines Knie-, Unterschenkel- und Fußteils (3) der Prothese anschließt, aufweisend ein proximales Stielteil (4), das in einen Femurstumpf (5) setzbar ist, wobei das Stielteil (4) zumindest teilweise mit einer offenmaschigen, dreidimensionalen Raumnetzstruktur (6) bedeckt ist und an seinem distalen Ende einen konischen Adapter (7) aufweist, mittels dessen ein Kondylenersatz (8), der der Form (11) natürlicher Kondylen eines Kniegelenks nachgebildet ist, an das Stielteil (4) gekoppelt ist, nach dem Patent 198 57 907, mit einer keilförmigen Unterlage (16), die mit dem Kondylenersatz (8) verbunden ist.
2. Oberschenkelstumpf-Endoprothese nach Anspruch 1, bei der der Keilwinkel α der Unterlage (16) im Bereich 5° < α < 9° liegt.
3. Oberschenkelstumpf-Endoprothese nach Anspruch 1 oder 2, bei der die Unterlage (16) mit der stoßdämpfenden Schicht (10) verbunden ist.
4. Oberschenkelstumpf-Endoprothese nach einem der Ansprüche 1 bis 3, bei der die Unterlage (16) aus einem stoßdämpfenden Kissen besteht.
5. Oberschenkelstumpf-Endoprothese nach Anspruch 4, bei der die Unterlage aus Silikon besteht.
DE1999132388 1998-12-16 1999-07-14 Oberschenkelstumpf-Endoprothese Expired - Fee Related DE19932388C1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
DE1999132388 DE19932388C1 (de) 1998-12-16 1999-07-14 Oberschenkelstumpf-Endoprothese
JP2001510395A JP2003504153A (ja) 1999-07-14 2000-05-20 エキソプロテーゼ用の大腿断端エンドプロテーゼ
PCT/EP2000/004552 WO2001005335A1 (de) 1999-07-14 2000-05-20 Oberschenkelstumpf-endoprothese für eine exoprothetische versorgung
EP00936758A EP1119319B1 (de) 1999-07-14 2000-05-20 Oberschenkelstumpfendoprothese für eine exoprothetische versorgung
AT00936758T ATE229775T1 (de) 1999-07-14 2000-05-20 Oberschenkelstumpfendoprothese für eine exoprothetische versorgung
ES00936758T ES2186650T3 (es) 1999-07-14 2000-05-20 Endoprotesis de muñon de muslo para una aplicacion exoprotesica.
US09/913,036 US6709466B1 (en) 1999-07-14 2000-05-20 Thigh stump endoprosthesis for an exoprosthetic treatment
DE50000961T DE50000961D1 (de) 1999-07-14 2000-05-20 Oberschenkelstumpfendoprothese für eine exoprothetische versorgung
HK02100810.6A HK1039741B (zh) 1999-07-14 2002-02-01 用於外部修復治療的大腿根部內部修復術

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DE19857907A DE19857907C1 (de) 1998-12-16 1998-12-16 Oberschenkelstumpf-Endoprothese für eine exoprothetische Versorgung
DE1999132388 DE19932388C1 (de) 1998-12-16 1999-07-14 Oberschenkelstumpf-Endoprothese

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10339209A1 (de) * 2003-08-20 2005-03-31 Eska Implants Gmbh & Co. Übergangsadapter
WO2005087145A1 (en) * 2004-03-12 2005-09-22 University College London Prosthetic limb attachment
EP2759281A1 (de) * 2013-01-29 2014-07-30 Les Hôpitaux Universitaires de Genève Implantat für die Amputation einer unteren Gliedmaße
DE102014115676B3 (de) * 2014-10-28 2015-11-05 Dieter Föllmer Prothesensystem

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Publication number Priority date Publication date Assignee Title
DE3125268C2 (de) * 1981-06-24 1984-04-12 C. Nicolai GmbH & Co KG, 3000 Hannover Implantat
DE4208247C1 (de) * 1992-03-14 1993-10-14 Eska Medical Gmbh & Co Implantat als Knochenersatz
DE4338746A1 (de) * 1993-11-12 1995-05-18 Otmar Dr Behr Amputationsstumpf-Endoprothese
US5766251A (en) * 1992-03-13 1998-06-16 Tomihisa Koshino Wedge-shaped spacer for correction of deformed extremities
DE19857907C1 (de) * 1998-12-16 2000-04-13 Eska Implants Gmbh & Co Oberschenkelstumpf-Endoprothese für eine exoprothetische Versorgung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125268C2 (de) * 1981-06-24 1984-04-12 C. Nicolai GmbH & Co KG, 3000 Hannover Implantat
US5766251A (en) * 1992-03-13 1998-06-16 Tomihisa Koshino Wedge-shaped spacer for correction of deformed extremities
DE4208247C1 (de) * 1992-03-14 1993-10-14 Eska Medical Gmbh & Co Implantat als Knochenersatz
DE4338746A1 (de) * 1993-11-12 1995-05-18 Otmar Dr Behr Amputationsstumpf-Endoprothese
DE19857907C1 (de) * 1998-12-16 2000-04-13 Eska Implants Gmbh & Co Oberschenkelstumpf-Endoprothese für eine exoprothetische Versorgung

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10339209A1 (de) * 2003-08-20 2005-03-31 Eska Implants Gmbh & Co. Übergangsadapter
DE10339209B4 (de) * 2003-08-20 2006-04-20 Eska Implants Gmbh & Co. Übergangsadapter
WO2005087145A1 (en) * 2004-03-12 2005-09-22 University College London Prosthetic limb attachment
US8268011B2 (en) 2004-03-12 2012-09-18 University College London Prosthetic limb attachment
EP2759281A1 (de) * 2013-01-29 2014-07-30 Les Hôpitaux Universitaires de Genève Implantat für die Amputation einer unteren Gliedmaße
WO2014118701A1 (en) * 2013-01-29 2014-08-07 Les Hopitaux Universitaires De Geneve Implant for lower limb amputation
US9724212B2 (en) 2013-01-29 2017-08-08 Les Hopitaux Universitaires De Geneve Implant for lower limb amputation
AU2014210770B2 (en) * 2013-01-29 2018-02-01 Les Hopitaux Universitaires De Geneve Implant for lower limb amputation
DE102014115676B3 (de) * 2014-10-28 2015-11-05 Dieter Föllmer Prothesensystem
US10828163B2 (en) 2014-10-28 2020-11-10 Sven Zarling Prosthesis system

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