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WO2006114091A1 - Hüftendoprothesenschaft - Google Patents

Hüftendoprothesenschaft Download PDF

Info

Publication number
WO2006114091A1
WO2006114091A1 PCT/DE2006/000730 DE2006000730W WO2006114091A1 WO 2006114091 A1 WO2006114091 A1 WO 2006114091A1 DE 2006000730 W DE2006000730 W DE 2006000730W WO 2006114091 A1 WO2006114091 A1 WO 2006114091A1
Authority
WO
WIPO (PCT)
Prior art keywords
bone
struts
hip
hip endoprosthesis
threaded screw
Prior art date
Application number
PCT/DE2006/000730
Other languages
English (en)
French (fr)
Inventor
Walter Didzun
Original Assignee
Walter Didzun
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Walter Didzun filed Critical Walter Didzun
Publication of WO2006114091A1 publication Critical patent/WO2006114091A1/de

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • 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
    • A61F2/30721—Accessories
    • A61F2/30724—Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving cavity
    • 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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    • 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
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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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    • A61F2002/30378—Spherically-shaped protrusion and recess
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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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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
    • 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
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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
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
    • A—HUMAN NECESSITIES
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
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    • A61F2/02—Prostheses implantable into the body
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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
    • 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
    • A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws

Definitions

  • the invention relates to a HFD-endoprothesenschaft for implantation in humans, with an upper, a cone for receiving an artificial femoral head bearing part and a plurality of permanently elastic struts that can be deformed so that they press from the inside against the bone and thus an elastic anchoring of the Cause hip prosthesis stem in the bone.
  • Such a hip endoprosthesis shaft is known from DE 31 13 898 Al.
  • this known hip prosthesis stem adjustment of the force with which the struts press from the inside against the bone is not possible.
  • a hip joint head prosthesis in which a plurality of internally pressed against the bone elements are provided, which are fixable by a threaded axially through the elements threaded rod.
  • the invention is based on the object to provide a H-endoprothesenschaft of the aforementioned type, in which an adjustment of the force with which the struts is pressed against the bone, is adjustable.
  • the hip endoprosthesis shaft is permanently elastic fixed in the medullary space of the human femur, where he can follow the natural movements of the femur and therefore can follow without premature loosening and bone loss and thus without painful discomfort.
  • the training allows adaptation to the different anatomy of different patients, as well as the easy correctability in case of incorrect insertion.
  • the procedure is easy to learn, special computer-aided systems are not required.
  • the hip endoprosthesis shaft according to the invention grows in the upper soft cancellous bone fractions of the femur, in the middle solid cortical bone portion it is elastic and in the lower part it is free to move to tolerate the movements resulting bending, length and torsional movements, so that no loosening and stress pain are caused.
  • the hip endoprosthesis shaft consists of an upper part 1, a lower part 5 and a plurality of extending between the parts 1, 2 struts 4 made of a permanently elastic material.
  • the upper part is provided with a bore, the lower part 5 with a threaded hole.
  • a threaded screw 2 passes through the first part 1 and screws with the tapping in the lower part 5.
  • the upper part 1 and the lower part 2 are provided with hemispherical depressions, the upper and the lower, correspondingly hemispherical ends of the struts record, so that a torsion of the struts in the two parts is possible.
  • the lower part 1 is provided with axially extending ribs 6, which abut against the bone and serve as anti-rotation.
  • a locking screw 3 which is guided by the first part 1, acts against the threaded screw 2 and prevents unwanted loosening.
  • the modulus of elasticity of the struts should correspond to that of the femur, so that during movements no frictions between struts and bone occur.

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

Hüftendoprothesenschaft zur Implantation beim Menschen, mit einem oberen, einen Konus zur Aufnahme eines künstlichen Hüftkopfes tragenden Teil (1) und einer Mehrzahl von dauerelastischen Streben (4), die derart verformt werden können, dass sie von innen gegen den Knochen drücken und somit eine elastische Verankerung des Hüftprothesenschafts im Knochen bewirken, bei der gekennzeichnet, dass der obere Teil (1) mit einer Bohrung versehen ist, dein mit einem Innengewinde versehener unterer Teil vorgesehen ist, wobei sich die Streben (4) zwischen dem oberen und dem unteren Teil (1, 5) erstrecken, und eine Gewindeschraube (2) vorgesehen ist, die durch die Bohrung in dem oberen Teil geführt ist und deren freies Ende in dem unteren Teil (5) schraubt, so dass die Kraft, mit der die Streben (4) gegen den Knochen drücken, durch das ein Anziehen der Gewindeschraube (2) eingestellt werden kann.

Description

Hüftendoprothesenschaft
Die Erfindung betrifft einen Hüftendoprothesenschaft zur Implantation beim Menschen, mit einem oberen, einen Konus zur Aufnahme eines künstlichen Hüftkopfes tragenden Teil und einer Mehrzahl von dauerelastischen Streben, die derart verformt werden können, dass sie von innen gegen den Knochen drücken und somit eine elastische Verankerung des Hüftprothesen- schafts im Knochen bewirken.
Ein derartiger Hüftendoprothesenschaft ist aus der DE 31 13 898 Al bekannt. Bei diesem bekannten Hüftendoprothesenschaft ist eine Einstellung der Kraft, mit der die Streben von innen gegen den Knochen drücken, nicht möglich.
Aus der DE 72 35 643 U ist eine Hüftgelenkkopfprothese bekannt, bei der eine Mehrzahl von innen gegen den Knochen gedrückten Elementen vorgesehen sind, die durch eine axial durch die Elemente durchgeführte Gewindestange fixierbar sind.
Der Erfindung liegt die Aufgabe zu Grunde, einen Hüftendoprothesenschaft der eingangs genannten Art zu schaffen, bei dem eine Einstellung der Kraft, mit der die Streben gegen den Knochen gedrückt wird, einstellbar ist.
Erfindungsgemäß wird diese Aufgabe durch die Merkmale des Anspruchs 1 gelöst, die Unteransprüche geben vorteilhafte Ausgestaltungen der Erfindung an.
Durch die Erfindung wird erreicht, dass der Hüftendoprothesenschaft dauerelastisch im Markraum des menschlichen Oberschenkelknochens fixiert ist, wobei er den natürlichen Bewegungen des Oberschenkelknochens folgen kann und daher ohne vorzeitige Lockerungen und Knochenverlust und damit ohne schmerzhafte Beschwerden folgen kann.
Die Ausbildung erlaubt eine Anpassung an die unterschiedliche Anatomie unterschiedlicher Patienten, sowie die leichte Korrigierbarkeit bei ggf. fehlerhaften Einbringung. Der Eingriff ist leicht erlernbar, besondere computergestützte Systeme sind nicht erforderlich.
Der Hütendoprothesenschaft kann bei auftretenden Lockerungen nachgezogen werden, aufwendige Wechseloperationen werden vermieden.
Der Hüftendoprothesenschaft nach der Erfindung wächst in den oberen weichen spongiösen Knochenanteilen des Oberschenkelknochens ein, im mittleren festen kortikalen Knochenanteil liegt er elastisch an und im unteren Bereich ist er frei beweglich, um die bei Bewegungen entstehenden Biege-, Längen- und Torsionsbewegungen zu tolerieren, so dass keine Lockerungen und Belastungsschmerzen verursacht werden.
Die Erfindung wird im Folgenden anhand einer Zeichnung erläutert, die einen derartigen, in einen Oberschenkelknochen eingebrachten Hüftendoprothesenabschnitt zeigt. Der Hüftendoprothesenschaft besteht aus einem oberen Teil 1, einem unteren Teil 5 und einer Mehrzahl von sich zwischen den Teilen 1, 2 erstreckenden Streben 4 aus einem dauerelastischen Material. Der obere Teil ist mit einer Bohrung versehen, der untere Teil 5 mit einer Gewindebohrung. Eine Gewindeschraube 2 verläuft durch das erste Teil 1 und schraubt mit der Gewindebohrang in dem unterem Teil 5. Bei einem Anziehen der Gewindeschraube 2 werden die Streben 4 sich nach außen wölben und gegen den Knochen drücken, wobei die Andruckkraft durch das Ausmaß des Anziehens der Gewindeschraube 2 bestimmt wird.
Der obere Teil 1 und der untere Teil 2 sind mit halbkugelförmigen Vertiefungen versehen, die oberen bzw. die unteren, entsprechend halbkugelförmig ausgebildeten Enden der Streben aufnehmen, so dass eine Torsion der Streben in den beiden Teilen möglich ist.
Der untere Teil 1 ist mit axial verlaufenden Rippen 6 versehen, die gegen den Knochen anliegen und als Verdrehsicherung dienen.
Eine Sicherungsschraube 3, die durch das erste Teil 1 geführt ist, wirkt gegen die Gewindeschraube 2 und hindert die an einer unerwünschten Lockerung.
Der Elastizitätsmodul der Streben sollten dem des Oberschenkelknochens entsprechen, damit bei Bewegungen keine Friktionen zwischen Streben und Knochen auftreten.

Claims

Patentansprüche
1. Hüftendoprothesenschaft zur Implantation beim Menschen, mit einem oberen, einen Konus zur Aufnahme eines künstlichen Hüftkopfes tragenden Teil (1) und einer Mehrzahl von dauerelastischen Streben (4), die derart verformt werden können, dass sie von innen gegen den Knochen drücken und somit eine elastische Verankerung des Hüftprothesenschafts im Knochen bewirken, dadurch gekennzeichnet, dass der obere Teil (1) mit einer Bohrung versehen ist, dass ein mit einem Innengewinde versehener unterer Teil vorgesehen ist, wobei sich die Streben (4) zwischen dem oberen und dem unteren Teil (1, 5) erstrecken, und dass eine Gewindeschraube (2) vorgesehen ist, die durch die Bohrung in dem oberen Teil geführt ist und deren freies Ende in dem unteren Teil (5) schraubt, so dass die Kraft, mit der die Streben (4) gegen den Knochen drücken, durch das ein Anziehen der Gewindeschraube (2) eingestellt werden kann.
2. Hüftendoprothesenschaft nach Anspruch 1, dadurch gekennzeichnet, dass der obere Teil (1) und der untere Teil (5) mit die oberen bzw. die unteren halbkugelförmigen Enden der Streben (4) aufnehmenden halbkugelförmigen Vertiefungen versehen sind.
3. Hüftendoprothesenschaft nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der untere Teil (5) mit einer gegen den Knochen wirkenden Verdrehsicherung (6) versehen ist.
4. Hüftendoprothesenschaft nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine durch den oberen Teil (1) geführte, auf die Gewindeschraube (7) wirkende Sicherungsschraube (3).
5. Hüftendoprothesenschaft nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Elastizitätsmodul der Streben (4) dem des menschlichen Knochens entspricht.
PCT/DE2006/000730 2005-04-26 2006-04-25 Hüftendoprothesenschaft WO2006114091A1 (de)

Applications Claiming Priority (2)

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DE102005019546A DE102005019546A1 (de) 2005-04-26 2005-04-26 Haltbarer Hüftendoprothesenschaft zur Implantation beim Menschen
DE102005019546.6 2005-04-26

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
WO2011005191A1 (en) * 2009-07-10 2011-01-13 Milux Holding S.A. Hip joint device and method
US20160310281A1 (en) * 2015-04-21 2016-10-27 Paonan Biotech Co., Ltd. Bufferable Femoral Implant
US20170079798A1 (en) * 2009-07-10 2017-03-23 Forsell Peter Hip joint device
RU2745794C2 (ru) * 2009-07-10 2021-04-01 Имплантика Патент Лтд. Протез тазобедренного сустава для закрепления в бедренной кости пациента
EP4079262A4 (de) * 2019-12-23 2023-02-01 Hongwen Zhu Biegsamer hüftgelenkschaft und hüftgelenkprothese damit

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DE102009043311A1 (de) * 2009-09-29 2011-03-31 Riehl, Ottmar Implantatelement für Gelenkendoprothesen

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US4681590A (en) * 1986-06-18 1987-07-21 John Tansey Femoral stem prosthesis
US4878917A (en) * 1986-04-25 1989-11-07 Mecron Medizinische Produkte Gmbh Modular assembly for a shaft prosthesis
US5116378A (en) * 1990-01-23 1992-05-26 Orthovations, Inc. Method and apparatus for expanding a shaft for use in prosthesis
US5580247A (en) * 1992-08-04 1996-12-03 Gittleman; Neal Clamping means for securing surgical implant
EP0982011A1 (de) * 1998-08-20 2000-03-01 Johnson & Johnson Professional, Inc. Prothese mit Greifsystem im Knochen

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DE3113898A1 (de) * 1981-04-07 1982-10-21 Happel, Martin Wilhelm, Dr. Dr., 6072 Dreieich Schaft und verankerung einer endoprothese in oder an einem knochen

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US4878917A (en) * 1986-04-25 1989-11-07 Mecron Medizinische Produkte Gmbh Modular assembly for a shaft prosthesis
US4681590A (en) * 1986-06-18 1987-07-21 John Tansey Femoral stem prosthesis
US5116378A (en) * 1990-01-23 1992-05-26 Orthovations, Inc. Method and apparatus for expanding a shaft for use in prosthesis
US5580247A (en) * 1992-08-04 1996-12-03 Gittleman; Neal Clamping means for securing surgical implant
EP0982011A1 (de) * 1998-08-20 2000-03-01 Johnson & Johnson Professional, Inc. Prothese mit Greifsystem im Knochen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011005191A1 (en) * 2009-07-10 2011-01-13 Milux Holding S.A. Hip joint device and method
US9180014B2 (en) 2009-07-10 2015-11-10 Peter Forsell Hip joint device and method
US20170079798A1 (en) * 2009-07-10 2017-03-23 Forsell Peter Hip joint device
RU2745794C2 (ru) * 2009-07-10 2021-04-01 Имплантика Патент Лтд. Протез тазобедренного сустава для закрепления в бедренной кости пациента
US11304813B2 (en) * 2009-07-10 2022-04-19 Forsell Peter Hip joint device
US20160310281A1 (en) * 2015-04-21 2016-10-27 Paonan Biotech Co., Ltd. Bufferable Femoral Implant
US10166108B2 (en) * 2015-04-21 2019-01-01 Paonan Biotech Co., Ltd. Bufferable femoral implant
EP4079262A4 (de) * 2019-12-23 2023-02-01 Hongwen Zhu Biegsamer hüftgelenkschaft und hüftgelenkprothese damit

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