DE102007010048A1 - Facing cutter, especially for preparation of femur condyle, has cutting edges of cutting elements with radially inner ends arranged in groups at different distances from rotational center of end face - Google Patents
Facing cutter, especially for preparation of femur condyle, has cutting edges of cutting elements with radially inner ends arranged in groups at different distances from rotational center of end face Download PDFInfo
- Publication number
- DE102007010048A1 DE102007010048A1 DE200710010048 DE102007010048A DE102007010048A1 DE 102007010048 A1 DE102007010048 A1 DE 102007010048A1 DE 200710010048 DE200710010048 DE 200710010048 DE 102007010048 A DE102007010048 A DE 102007010048A DE 102007010048 A1 DE102007010048 A1 DE 102007010048A1
- Authority
- DE
- Germany
- Prior art keywords
- face
- cutting
- cutting edges
- rotation
- milling
- 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.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1675—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the knee
Abstract
Description
Bei der monokondylären Knieendoprothesenversorgung sind Prothesenteile an den Knochen anzupassen und mit dem Knochen, z. B. dem Femur, zu verbinden. Dazu ist der Femurkondylus, z. B. der mediale, in geeigneter Weise für die Aufnahme eines Prothesenteils zu präparieren. Dies kann dadurch geschehen, dass mit einem Fräswerkzeug eine Ausnehmung in den Kondylus eingebracht wird, in welche das Prothesenteil eingepasst werden kann.at the monocondylar Knee endoprosthesis prosthesis parts are adapted to the bone and with the bone, z. B. the femur to connect. This is the Femoral condyle, e.g. As the medial, in a suitable way for the recording to prepare a prosthetic part. This can be done by using a milling tool a recess in the condyle is inserted, into which the prosthesis part fits can be.
Hierbei kommt es im Hinblick auf Qualität und Nachhaltigkeit der Prothesenversorgung auf sehr präzises Arbeiten an. Benötigt wird deshalb ein Fräswerkzeug, das es gestattet, während des Fräsvorgangs die Frästiefe gut zu kontrollieren und die gefräste Ausnehmung mit einem genau eingehaltenen Durchmesser und einem mit hoher Genauigkeit planen Ausnehmungsboden zu fertigen.in this connection it comes with regard to quality and Sustainability of prosthetic restoration to very precise work at. requires therefore becomes a milling tool, that allows it while the milling process the milling depth good control and the milled recess with a precise maintained diameter and a plan with high accuracy To make recess bottom.
Davon ausgehend liegt der Erfindung die Aufgabe zugrunde, ein für den genannten Zweck optimiertes Fräswerkzeug zur Verfügung zu stellen.From that Based on the object of the invention, one for the mentioned Purpose optimized milling tool to disposal to deliver.
Diese Aufgabe wird gelöst durch einen Planfräser, insbesondere zur Präparation eines Femurkondylus bei der monokondylären Knieendoprothesenversorgung, mit einem rotativ antreibbaren Fräskopf, der eine senkrecht zur Rotationsachse verlaufende freie Stirnfläche aufweist, auf welcher eine Mehrzahl von Schneidelementen mit auf das Rotationszentrum der Stirnfläche radial zulaufenden Schneidkanten angeordnet ist, wobei die radial äußeren Enden aller Schneidkanten von dem Rotationszentrum der Stirnfläche gleich weit beabstandet sind, und die radial inneren Enden der Schneidkanten gruppenweise unterschiedlich weit von dem Rotationszentrum der Stirnfläche beabstandet sind.These Task is solved through a face milling cutter, especially for preparation a femoral condyle in the monocondylar knee endoprosthesis, with a rotatably driven milling head, which is perpendicular to the Has rotational axis extending free end face, on which a plurality of cutting elements with radially on the center of rotation of the end face tapered cutting edges is arranged, wherein the radially outer ends all cutting edges of the center of rotation of the end face same are widely spaced, and the radially inner ends of the cutting edges in groups Spaced differently far from the center of rotation of the end face are.
Vorteilhafte weitere Ausbildungen des erfindungsgemäßen Planfräsers sind in den Ansprüchen 2 bis 6 angegeben.advantageous Further embodiments of the surface milling cutter according to the invention are in the claims 2 to 6 indicated.
Der besondere Erfolg der Erfindung liegt darin, dass die spezielle Anordnung der Schneidelemente mit den Schneidkanten auf der freien Stirnfläche des Fräskopfes bei dem hier zu zerspanenden Material, nämlich Knochen, zu geometrisch besonders maßhaltigen Ausnehmungen im Knochen führt. Als weiterer Vorteil beim Einsatz dieses Fräsers ergibt sich, dass sich beim Fräsen Späne ergeben, die aufgrund ihrer in erwünschter Weise inhomogenen Zusammensetzung der Osteointegration förderlich sind, wenn sie als Knochenmehl zum Auffüllen von Hohlräumen bei der weiteren Ausführung der Prothesenversorgung verwendet werden.Of the particular success of the invention is that the special arrangement the cutting elements with the cutting edges on the free end face of the milling head in the case of the material to be machined here, namely bone, too geometrical particularly dimensionally stable Recesses in the bone leads. When Another advantage of using this router is that when milling Give shavings, because of their in desired Way inhomogeneous composition of osteointegration are conducive when used as bone meal to fill in cavities the further execution the prosthesis supply can be used.
Nachfolgend wird der erfindungsgemäße Planfräser anhand der Zeichnung näher erläutert. Die Figuren zeigen in schematischer Darstellung:following the face mill according to the invention is based on closer to the drawing explained. The figures show in a schematic representation:
In
Das
Ausführungsbeispiel
gemäß
Bei beiden Ausführungsbeispielen weisen die leistenartig ausgebildeten Schneidelemente unter einem Winkel von 20 Grad, gemessen gegen de Stirnfläche, schräg abfallende Flanken auf, die sich in radialer Richtung wenigstens über die Länge der Schneidkanten erstrecken, so dass die Schneidelemente ein in Umfangsrichtung verlaufendes Sägezahnprofil bilden.at both embodiments have the strip-like cutting elements under a Angle of 20 degrees, measured against the end face, sloping flanks, the extending in the radial direction at least over the length of the cutting edges, such that the cutting elements extend in the circumferential direction sawtooth form.
Bei allen Ausführungen des erfindungsgemäßen Planfräsers können auf der Stirnfläche des Fräskopfes zusätzlich zu den Schneidelementen mit den Schneidkanten weitere Elemente zum Zentrieren des Fräskopfes, zum Vorfräsen oder auch zum Räumen der Frässpäne vorgesehen sein.In all embodiments of the face milling cutter according to the invention, in addition to the cutting elements with the cutting edges, further elements for centering the milling head, for pre-milling or for roughing can be provided on the end face of the milling head be provided the milling chips.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710010048 DE102007010048A1 (en) | 2007-03-01 | 2007-03-01 | Facing cutter, especially for preparation of femur condyle, has cutting edges of cutting elements with radially inner ends arranged in groups at different distances from rotational center of end face |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710010048 DE102007010048A1 (en) | 2007-03-01 | 2007-03-01 | Facing cutter, especially for preparation of femur condyle, has cutting edges of cutting elements with radially inner ends arranged in groups at different distances from rotational center of end face |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007010048A1 true DE102007010048A1 (en) | 2008-09-11 |
Family
ID=39677784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200710010048 Ceased DE102007010048A1 (en) | 2007-03-01 | 2007-03-01 | Facing cutter, especially for preparation of femur condyle, has cutting edges of cutting elements with radially inner ends arranged in groups at different distances from rotational center of end face |
Country Status (1)
Country | Link |
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DE (1) | DE102007010048A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113695653A (en) * | 2021-09-07 | 2021-11-26 | 瑞声精密制造科技(常州)有限公司 | Ball-end milling cutter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2838348A1 (en) * | 1978-09-02 | 1980-03-06 | Neuhaeuser Hans G | DEVICE FOR MOLDING A BONE OPENING, IN PARTICULAR IN THE HIP LEG, FOR INSERTING AN ARTIFICIAL JOINT PAN |
-
2007
- 2007-03-01 DE DE200710010048 patent/DE102007010048A1/en not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2838348A1 (en) * | 1978-09-02 | 1980-03-06 | Neuhaeuser Hans G | DEVICE FOR MOLDING A BONE OPENING, IN PARTICULAR IN THE HIP LEG, FOR INSERTING AN ARTIFICIAL JOINT PAN |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113695653A (en) * | 2021-09-07 | 2021-11-26 | 瑞声精密制造科技(常州)有限公司 | Ball-end milling cutter |
CN113695653B (en) * | 2021-09-07 | 2024-04-02 | 瑞声精密制造科技(常州)有限公司 | Ball end milling cutter |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |