DE1182415B - Lightweight flexible rod made of plastic - Google Patents

Lightweight flexible rod made of plastic

Info

Publication number
DE1182415B
DE1182415B DEK29039A DEK0029039A DE1182415B DE 1182415 B DE1182415 B DE 1182415B DE K29039 A DEK29039 A DE K29039A DE K0029039 A DEK0029039 A DE K0029039A DE 1182415 B DE1182415 B DE 1182415B
Authority
DE
Germany
Prior art keywords
plastic
metal
metal inserts
lightweight flexible
rod
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.)
Pending
Application number
DEK29039A
Other languages
German (de)
Inventor
Dipl-Ing Rudolf Kellermann
Hans-Christof Klein
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.)
RUDOLF KELLERMANN DIPL ING
Original Assignee
RUDOLF KELLERMANN DIPL ING
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 RUDOLF KELLERMANN DIPL ING filed Critical RUDOLF KELLERMANN DIPL ING
Priority to DEK29039A priority Critical patent/DE1182415B/en
Publication of DE1182415B publication Critical patent/DE1182415B/en
Pending 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
    • A61F2/36—Femoral heads ; Femoral endoprostheses

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)

Description

Leichtbau-Biegestab aus Kunststoff Die Erfindung betrifft einen Leichtbau-Biegestab aus Kunststoff mit Armierung aus Metallegierungen.Lightweight flexible rod made of plastic The invention relates to a lightweight flexible rod Made of plastic with armoring made of metal alloys.

Es ist bekannt, Stäbe und Stifte aus Kunstharz, z. B. für Hüftgelenkprothesen mit korrosionsbeständigen Stahllegierungen zu armieren. Diese Einlagen sind in der Mitte des Kunststoffkörpers eingebettet, so daß die Achse der Einlage mit der des Kunststoffkörpers zusammenfällt. It is known to use synthetic resin rods and pins, e.g. B. for hip joint prostheses to be reinforced with corrosion-resistant steel alloys. These deposits are in the Embedded in the middle of the plastic body, so that the axis of the insert with that of the Plastic body collapses.

Nähere Untersuchungen haben ergeben, daß bei Armierung mit dünnen Einlagen in der bisher üblichen Form mittig zum Kunststoffkörper kaum Tragfähigkeitssteigerungen gegenüber Stiften ohne Armierung auftreten. Würde man dagegen solche dünnen Einlagen von der Mitte weg in Richtung auf den Rand des Körpers zu anordnen, wobei ein gewisser Abstand zwischen der Achse der Armierung und der des Stabkörpers gebildet wird, so wird die Tragfähigkeit des Kunststoffstabes bedeutend verbessert. Closer investigations have shown that with reinforcement with thin Inserts in the usual form in the middle of the plastic body hardly increase the load-bearing capacity occur compared to pins without reinforcement. If you would, on the other hand, such thin deposits arrange away from the center towards the edge of the body, being a certain The distance between the axis of the reinforcement and that of the rod body is formed, so the load-bearing capacity of the plastic rod is significantly improved.

Zur Verwirklichung dieses Lösungsprinzips wird erfindungsgemäß ein solcher Leichtbau-Biegestab aus Kunststoff vorgeschlagen, dessen Armierung aus zwei oder mehreren geraden drahtförmigen Metalleinlagen besteht, die an ihren Enden durch Metallstücke fest miteinander verbunden sowie parallel und konzentrisch zur Stab achse, aber nicht mit ihr zusammenfallend angeordnet sind. Die auf verschiedenen konzentrisch zur Stabachse verlaufenden Kreisen symmetrisch angeordneten Metalleinlagen können mit verschiedenen Querschnitten versehen sein. According to the invention, a proposed such a lightweight flexible rod made of plastic, the reinforcement of two or several straight wire-shaped metal inserts, which through at their ends Metal pieces firmly connected to each other and parallel and concentric to the rod axis, but not coincident with it. The on different Circles arranged concentrically to the rod axis and symmetrically arranged metal inserts can be provided with different cross-sections.

Eine erhebliche Verbesserung der Festigkeit des neuen Biegestabes und damit auch seiner Verwendbarkeit wird erreicht, wenn scine Metalleinlagen aus Titan oder Titanlegierungen bestehen. Da Titan einen bedeutend geringeren Elastizitätsmodul besitzt als Stahl, passen sich dieses Metall und auch seine Legierungen dem Kunststoff vorteilhaft an. A significant improvement in the strength of the new flexible bar and thus also its usability is achieved when scine metal inserts Titanium or titanium alloys exist. Because titanium has a significantly lower modulus of elasticity possesses than steel, this metal and its alloys adapt to the plastic advantageous.

Die Metalleinlagen können aus Drähten mit einer Zugfestigkeit bis zu 220 kg/mm2 bestehen. The metal inserts can be made from wires with a tensile strength of up to to 220 kg / mm2.

Der neue Leichtbau-Biegestab verbessert nicht nur die Haltbarkeit von stabförmigen Kunststoffkörperr für orthopädische Zwecke, sondern er ermöglicht eine weitgehende Verwendung. Die neuen Leichtbau Biegestäbe aus Kunststoff mit Armierungen aus Metallegierungen können für Geräte und an Maschinen der verschiedensten Anlagen gebraucht werden. Sie vereinigen eine überaus hohe Biege festigkeit mit sehr geringem Materialbedarf. The new lightweight flexible rod not only improves durability of rod-shaped plastic bodies for orthopedic purposes, but it allows a widespread use. The new lightweight flexible rods made of plastic with reinforcements from metal alloys can be used for devices and machines of the most diverse systems to be needed. They combine extremely high flexural strength with very little Material requirements.

Claims (4)

Patentansprüche: 1. Leichtbau-Biegestab aus Kunststoff mit Armierung aus Metallegierungen, d a du r c h gekennzeichnet, daß die Armierung aus zwei oder mehreren geraden drahtförmigen Metalleinlagen besteht, die an ihren Enden durch Metallstücke fest miteinander verbunden sowie parallel und konzentrisch zur Stabachse, aber nicht mit ihr zusammenfallend angeordnet sind. Claims: 1. Lightweight flexible rod made of plastic with reinforcement made of metal alloys, d a du r c h marked that the reinforcement consists of two or consists of several straight wire-shaped metal inserts, which through at their ends Metal pieces firmly connected to each other and parallel and concentric to the rod axis, but are not arranged to coincide with it. 2. Biegestab nach Anspruch 1, dadurch ge kennzeichnet, daß die auf verschiedenen konzentrisch zur Stabachse verlaufendea Kreisen symmetrisch angeordneten Metalleinlagen mit verschiedenen Querschnitten versehen sind. 2. bending rod according to claim 1, characterized in that the on various circles that run concentrically to the rod axis and are symmetrically arranged Metal inserts are provided with different cross-sections. 3. Biegestab nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Metalleinlagen aus Titan oder Titanlegierungen bestehen. 3. bending rod according to claim 1 or 2, characterized in that the metal inserts consist of titanium or titanium alloys. 4. Biegestab nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Metalleinlagen aus Drähten mit einer Zugfestigkeit bis zu 220 kg/mm2 bestehen. 4. bending rod according to one of claims 1 to 3, characterized in that that the metal inserts consist of wires with a tensile strength of up to 220 kg / mm2. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 818 390, 872 979, 876739. Considered publications: German Patent Specifications No. 818 390, 872 979, 876739.
DEK29039A 1956-06-06 1956-06-06 Lightweight flexible rod made of plastic Pending DE1182415B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK29039A DE1182415B (en) 1956-06-06 1956-06-06 Lightweight flexible rod made of plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK29039A DE1182415B (en) 1956-06-06 1956-06-06 Lightweight flexible rod made of plastic

Publications (1)

Publication Number Publication Date
DE1182415B true DE1182415B (en) 1964-11-26

Family

ID=7218384

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK29039A Pending DE1182415B (en) 1956-06-06 1956-06-06 Lightweight flexible rod made of plastic

Country Status (1)

Country Link
DE (1) DE1182415B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255008B (en) * 1965-02-19 1967-11-23 Scholten & Teubert O H G Air-operated spray guns, in particular paint spray guns
FR2438468A1 (en) * 1978-10-11 1980-05-09 Tornier Sa Ets IMPROVEMENTS ON HIP PROSTHESES

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE818390C (en) * 1949-12-21 1951-10-25 Herbert Czech Tooth prosthesis
DE872979C (en) * 1951-10-30 1953-04-13 Franz Heimbuerger Fixatives for dentures
DE876739C (en) * 1949-10-07 1953-05-18 Franz Donatus Dr Me Timmermans Hip joint prosthesis

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE876739C (en) * 1949-10-07 1953-05-18 Franz Donatus Dr Me Timmermans Hip joint prosthesis
DE818390C (en) * 1949-12-21 1951-10-25 Herbert Czech Tooth prosthesis
DE872979C (en) * 1951-10-30 1953-04-13 Franz Heimbuerger Fixatives for dentures

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1255008B (en) * 1965-02-19 1967-11-23 Scholten & Teubert O H G Air-operated spray guns, in particular paint spray guns
FR2438468A1 (en) * 1978-10-11 1980-05-09 Tornier Sa Ets IMPROVEMENTS ON HIP PROSTHESES

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