DE10131085A1 - Hüftprothesen-Gelenkpfanne - Google Patents

Hüftprothesen-Gelenkpfanne

Info

Publication number
DE10131085A1
DE10131085A1 DE10131085A DE10131085A DE10131085A1 DE 10131085 A1 DE10131085 A1 DE 10131085A1 DE 10131085 A DE10131085 A DE 10131085A DE 10131085 A DE10131085 A DE 10131085A DE 10131085 A1 DE10131085 A1 DE 10131085A1
Authority
DE
Germany
Prior art keywords
shell
cup
spring element
metal alloy
aided
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.)
Withdrawn
Application number
DE10131085A
Other languages
English (en)
Inventor
Karl Engels
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE10131085A priority Critical patent/DE10131085A1/de
Publication of DE10131085A1 publication Critical patent/DE10131085A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
    • 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
    • A61F2/30721—Accessories
    • A61F2/30744—End caps, e.g. for closing an endoprosthetic cavity
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30166—H-shaped or I-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
    • 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
    • A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
    • 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
    • A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
    • 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
    • A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
    • A61F2002/30571—Leaf springs
    • 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
    • A61F2002/30589—Sealing means
    • 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
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • 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
    • A61F2/34—Acetabular cups
    • A61F2002/3445—Acetabular cups having a number of shells different from two
    • A61F2002/3448—Multiple cups made of three or more concentric shells fitted or nested into one another
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

Die Erfindung betrifft eine Hüftprothesen-Gelenkpfanne, die Teile der aus der natürlichen Alltagsbelastung entstehenden Stoß-, Druck-, Schub- und Verdrehungskräfte noch vor der Übertragung auf die Verbundzone zwischen Prothesenschaft und Knochen des Oberschenkels abbaut; durch ein eingebrachtes Federelement zwischen Pfannen-Schale und Pfannen-Inlay. Das Federelement verbraucht einen Teil der Belastungskräfte als Verformungsenergie, entlastet so den Gelenkschaftsitz an der Grenzfläche zum Knochen und verlängert damit die medizinische Anwendbarkeitsdauer der Prothese. Dieser Puffereffekt schont ebenso die tragende Gelenkstruktur des ganzen Körpers.

Description

Die heute eingesetzten Hüftendoprothesen haben eine weitgehend starre Verbindung durch Pass- (Rechner-gestützte Fräsung), reinen Press- oder zementierten Sitz des Gelenkschaftes im Röhrenknochen des Oberschenkels, was eine langjährige Befestigung des künstlichen Gelenkes gewährleisten soll.
Gegen diese Verbindung wirken Stoss-, Druck-, Schub- und Verdrehungskräfte aus der natürlichen Alltagsbelastung, die über Gelenkpfanne und Prothesenschaft auf die Grenzfläche der Verbind­ ung mit dem Knochen (Kontaktzone) übertragen werden und dort häufig eine vorzeitige Lockerung des Prothesensitzes bewirken.
Dieses Problem wird durch das im Patentanspruch aufgeführte Merkmal verringert, weil Teile, vor allem die Spitzen der Belastungskräfte, sich als Verformungsenergie im Federelement verbrauchen.
Die mit der Erfindung erzielten Vorteile bestehen insbesondere in der Verlängerung der medizinischen Anwendbarkeitsdauer, die sich aus der verminderten Beanspruchung des Prothesensitzes logisch ergibt.
Darüberhinaus wird durch das Federelement ein Stossdämpfereffekt, wie im gesunden Gelenk zuvor durch Knorpel, erzielt. Das wiederum wirkt sich auf die Funktion der tragenden, symmetrischen Gelenke­ struktur des ganzen Körpers entlastend aus; vornehmlich auf das häufig durch die erkrankungsbedingte Fehlhaltung geschädigte Knie des betroffenen Beines.
Zwei Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und werden im folgenden näher beschrieben.
Die Zeichnung zeigt zwei Hüftgelenkpfannen mit der Schale und dem Inlay .
Diese Teile können weiterhin aus heute schon verwendeten Mate­ rialien mit allgemein bewährtem Design und erprobter Architektur hergestellt sein.
In Fig. I besteht das Federelement aus einem elastischen, Lastwechsel festem Material, der Puffereinlage .
Ein Dichtring aus körperverträglichem Material (z. B. Silikon) schützt vor Abwehrreaktionen, wenn die Puffereinlage wegen physikalisch besserer Eignung aus aggressiverem Material hergestellt sein muß.
In Fig. II besteht das Federelement aus einer Tellerfeder-Schale (aus z. B. Metalllegierung oder Kunststoff), die auf einer Gleitscheibe sitzt (aus z. B. Hartmetall, Kunststoff, Elfenbein oder Keramik), und der Füll- und Puffermasse , einem Breitbandring aus elastischem Material (z. B. Silikon oder Hydrogel).
Die Tellerfeder-Schale kann in die Puffereinlage oder in die Füll- und Puffermasse eingearbeitet sein.

Claims (1)

  1. Hüftprothesen-Gelenkpfanne, die Teile der aus der natürlichen Alltagsbelastung entstehenden Stoss-, Druck-, Schub- und Verdrehungskräfte noch vor der Übertragung auf den Prothesensitz, also auf die Grenzfläche zwischen Prothesenschaft und Knochen des Oberschenkels abbaut, dadurch gekennzeichnet, dass zwischen der Pfannenschale und dem Inlay ein Federelement eingebracht ist.
DE10131085A 2001-06-27 2001-06-27 Hüftprothesen-Gelenkpfanne Withdrawn DE10131085A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10131085A DE10131085A1 (de) 2001-06-27 2001-06-27 Hüftprothesen-Gelenkpfanne

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10131085A DE10131085A1 (de) 2001-06-27 2001-06-27 Hüftprothesen-Gelenkpfanne

Publications (1)

Publication Number Publication Date
DE10131085A1 true DE10131085A1 (de) 2002-04-25

Family

ID=7689697

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10131085A Withdrawn DE10131085A1 (de) 2001-06-27 2001-06-27 Hüftprothesen-Gelenkpfanne

Country Status (1)

Country Link
DE (1) DE10131085A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098193A2 (de) * 2008-02-28 2009-09-09 Finsbury (Development) Limited Prothese

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2098193A2 (de) * 2008-02-28 2009-09-09 Finsbury (Development) Limited Prothese
EP2098193A3 (de) * 2008-02-28 2009-10-14 Finsbury (Development) Limited Prothese

Similar Documents

Publication Publication Date Title
US4204284A (en) Joint prosthesis with contoured pin
US5545234A (en) Lower extremity prosthetic device
Charnley Surgery of the Hip-joint
US4655778A (en) Joint prosthesis
EP1737397B1 (de) Vakuumpumpe mit stossdämpfung und kontrollierter drehung für prothesenvorrichtungen
US6482238B1 (en) Upper leg stump endoprosthesis for an exoprosthetic provision
JPH07508190A (ja) 人工構成部及びその製造方法
US9408706B2 (en) Trapeziometacarpal joint implant and associated methods
EP0815809A3 (de) Prothese mit veränderbarer Passungs- und Spannungsverteilung
Tang et al. Let them walk! Current prosthesis options for leg and foot amputees
Kotzar et al. Torsional loads in the early postoperative period following total hip replacement
KN et al. Evolution of different designs and wear studies in total hip prosthesis using finite element analysis: A review
JP2003033377A (ja) 体外補装具のトーションデバイス
Xu et al. Finite element analysis of bone stress and strain around a distal osseointegrated implant for prosthetic limb attachment
Biegler et al. Effect of porous coating and loading conditions on total hip femoral stem stability
US20220023058A1 (en) Interposition implants for the hand
Tensi et al. Non-linear three-dimensional finite element analysis of a cementless hip endoprosthesis
DE10131085A1 (de) Hüftprothesen-Gelenkpfanne
JP2018504224A (ja) セラミックオンセラミック摩擦継手をなす可動セラミックプレートを有する全人工膝関節
CN113397767B (zh) 一种方便置换的仿生型表面髋关节假体
Joyce et al. NeuFlex metacarpophalangeal prostheses tested in vitro
Kowal et al. Biomechanical Parameters of Gait after Unilateral Above-knee Amputation. Current State of Research
DE10029859A1 (de) Prothesenschaft für künstliche Gelenke
EP0083155A1 (de) Stossdämpfender Anschlag für prothetische Vorrichtungen
Christel et al. Role of stem design and material on stress distributions in cemented total hip replacement

Legal Events

Date Code Title Description
OAV Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1
8139 Disposal/non-payment of the annual fee