EP0748187A1 - Cooled drill bushing - Google Patents

Cooled drill bushing

Info

Publication number
EP0748187A1
EP0748187A1 EP95904373A EP95904373A EP0748187A1 EP 0748187 A1 EP0748187 A1 EP 0748187A1 EP 95904373 A EP95904373 A EP 95904373A EP 95904373 A EP95904373 A EP 95904373A EP 0748187 A1 EP0748187 A1 EP 0748187A1
Authority
EP
European Patent Office
Prior art keywords
drill sleeve
coolant
drill
hollow cylinder
drilling
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Withdrawn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
EP95904373A
Other languages
German (de)
French (fr)
Inventor
Robert Frigg
Robert Schavan
Peter DÄSCHER
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.)
AO Technology AG
Original Assignee
Synthes AG Chur
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 Synthes AG Chur filed Critical Synthes AG Chur
Publication of EP0748187A1 publication Critical patent/EP0748187A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • 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
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires

Definitions

  • the invention relates to a drill sleeve, according to the preamble of claim 1.
  • Drill sleeves are widely used in osteosynthesis, both for drilling, tapping and in some cases for inserting bone screws, Kirschner wires, Schanz screws or Steinmann nails. There are multiple reasons for that.
  • drill sleeves prevent the soft tissue from being wound up on the rotating instrument. They also prevent the rotating instrument from slipping and serve as a guide for operations such as drilling, tapping and inserting the implant.
  • plate osteosynthesis they are used to find the correct borehole in the plate hole by means of a shape that is specially adapted to the plate symmetry.
  • drill sleeves supplemented by a trocar, serve to find a constant drilling and insertion channel.
  • EP-Al 0 460 447 shows a compression drill sleeve, in particular for plate osteosynthesis.
  • a disadvantage of this and other drill sleeves according to the prior art is the considerable frictional heat that occurs when drilling and inserting the implants.
  • machining the bone by drilling or tapping a large part of the mechanical work is converted into heat.
  • the same applies to the insertion of implants since the heat is generated by the friction between the implant and the bone. This heat can lead to thermal damage to the bone or soft tissue.
  • the invention seeks to remedy this.
  • the invention has for its object to provide a drill sleeve in which the coolant can be introduced directly into the drill sleeve, so that neither the instruments nor the drilling machine have to be converted.
  • the invention solves this problem with a drill sleeve which has the features of claim 1.
  • the invention can be implemented in various ways in which the coolant is always introduced directly into the drill sleeve.
  • the advantage that can be achieved with the invention lies in the fact that in this way the coolant, which consists of physiological saline solution or ring solution, reaches the working area directly and thus leads to an immediate and effective temperature reduction.
  • FIG. 1 shows a longitudinal section through the drill sleeve according to the invention
  • FIG. 2 shows a cross section along the line II-II in FIG. 1, 3 shows a longitudinal section through a double-walled drill sleeve, - and
  • FIG. 4 represents a cross section along the line IV-IV in FIG. 3.
  • the drill sleeve shown in FIG. 1 essentially consists of a hollow cylinder 7 which has a handle 9.
  • the hollow cylinder 7 has an upper end 1 for the introduction of an instrument or implant and a lower end which can be placed on the bone and is designed as a serrated crown 2.
  • the grip 9 is designed as a coolant connection 3 and has a channel 4 running inside for this purpose. through which coolant can be introduced directly into the interior 5 of the drill sleeve.
  • the coolant connection 3 has a connecting piece 11 for a hose, so that coolant can be introduced into the drill sleeve by means of a syringe, which cools the instrument, the implant and the bone.
  • the hollow cylinder 7 has longitudinal grooves 6 in order to facilitate the circulation of the coolant in the interior 5 of the drill sleeve.
  • 3 and 4 a double-walled design of the drill sleeve is shown. It is constructed in the same way as the embodiment according to FIG. 1, except that a further hollow cylinder 8 is arranged in the hollow cylinder 7, so that a cavity 10 is formed between the two hollow cylinders 7, 8, which is connected to the channel 4 of the handle 9 and in which coolant can be introduced through the coolant connection 3.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)

Abstract

Described is a drill bushing for use in osteosynthesis, in particular for drilling, cutting threads and inserting implants. It has an upper end (1), designed to insert an instrument or implant, and a lower end (2) which can be placed on the bone. Positioned near the upper end (1) is a coolant connection point (3) by means of which coolant can be passed into the bushing.

Description

Kühlbare Bohrbüchse Coolable drill sleeve
Die Erfindung bezieht sich auf eine Bohrbüchse, gemäss dem Oberbegriff des Anspruchs 1.The invention relates to a drill sleeve, according to the preamble of claim 1.
Bohrbüchsen finden bei der Osteosynthese in weiten Bereichen Anwendung, sowohl zum Bohren, Gewindeschneiden als auch teilweise zum Einbringen von Knochenschrauben, Kirschner- drähten, Schanzschen Schrauben oder Steinmann-Nägeln. Die Gründe hierfür sind vielfältig. Bei einer Osteosynthese mit offenem Zugang verhindern Bohrbüchsen das Aufwickeln des Weichteil-Gewebeε am rotierenden Instrument. Sie verhindern weiter das Abrutschen des rotierenden Instrumentes und dienen bei Arbeitsgängen wie Bohren, Gewindeschneiden und Einbringen des Implantateε, als Führung. Bei Plattenosteosynthesen dienen sie der Findung des korrekt gelagerten Bohrlochs im Plattenloch durch eine speziell der Plattensymmetrie angepasste Formgebung. Bei Osteosynthesen mit Stichinzision, wie zum Beispiel beim Anlegen eines Fixateur externe, dienen Bohrbüchsen, ergänzt durch einen Trokar, der Findung eines gleichbleibenden Bohr- und Insertionskanales. Hierdurch werden die Weichteile, welche unsichtbar unter der Haut liegen, geschützt. Nach Bestimmung des "Arbeitskanals" können verschiedene Instrumente (Bohrer, Gewindeschneider, ängenmessgerät) und Implantate (Schraube, Kirschnerdraht, Schanzsche Schraube, Steinmann-Nagel) durch die Bohrbüchse eingeführt werden, ohne dass sich die Position der Bohrbüchse verändert .Drill sleeves are widely used in osteosynthesis, both for drilling, tapping and in some cases for inserting bone screws, Kirschner wires, Schanz screws or Steinmann nails. There are multiple reasons for that. In the case of osteosynthesis with open access, drill sleeves prevent the soft tissue from being wound up on the rotating instrument. They also prevent the rotating instrument from slipping and serve as a guide for operations such as drilling, tapping and inserting the implant. In plate osteosynthesis, they are used to find the correct borehole in the plate hole by means of a shape that is specially adapted to the plate symmetry. In the case of osteosynthesis with a stab incision, such as when attaching an external fixator, drill sleeves, supplemented by a trocar, serve to find a constant drilling and insertion channel. This protects the soft tissues that are invisible under the skin. After determining the "working channel", various instruments (drills, taps, length measuring devices) and implants (screws, Kirschner wire, Schanz screw, Steinmann-Nagel) can be inserted through the drill sleeve without changing the position of the drill sleeve.
Durch die spezielle Formgebung der Bohrbüchse, angepasst an die verschiedenen Implantate und die verschiedenen Operations- techniken für die unterschiedlichsten Osteosyntheseverfahren, ergeben sich eine Vielzahl von Bohrbüchsen-Typen, welche aber alle die gleiche Aufgabe besitzen. Als Beispiel dafür kann die EP-Al 0 460 447 zitiert werden, welche eine Kompressions- Bohrbüchse, insbesondere für die Platten-Osteosynthese zeigt.Due to the special shape of the drill sleeve, adapted to the different implants and the different surgical techniques for the most diverse osteosynthesis procedures, there are a multitude of drill sleeve types, but they all have the same task. As an example of this, EP-Al 0 460 447 can be cited, which shows a compression drill sleeve, in particular for plate osteosynthesis.
Nachteilig bei dieser und anderen Bohrbüchsen gemäss dem Stand der Technik ist die beim Bohren und Einbringen der Implantate auftretende erhebliche Reibungswärme. Bei der spanenden Bearbeitung des Knochens durch Bohren oder Gewindeschneiden wird ein grosser Anteil der mechanischen Arbeit in Wärme umgewandelt. Das Gleiche gilt für das Einbringen von Implantaten, da hier die Wärme durch die Reibung zwischen Implantat und Knochen erzeugt wird. Diese entstehende Wärme kann zur thermalen Schädigung des Knochens oder des Weichteil-Gewebes führen.A disadvantage of this and other drill sleeves according to the prior art is the considerable frictional heat that occurs when drilling and inserting the implants. When machining the bone by drilling or tapping, a large part of the mechanical work is converted into heat. The same applies to the insertion of implants, since the heat is generated by the friction between the implant and the bone. This heat can lead to thermal damage to the bone or soft tissue.
In anderen Bereichen versucht man diese Hitzeentwicklung durch innengekühlte Bohrer zu verhindern. Um diese Methode jedoch für den osteosynthetischen Bereich übernehmen zu können, wäre ein sehr aufwendiger und kostspieliger Umbau sowohl der Instrumente als auch der Bohrmaschine notwendig. Es musste somit nach anderen Lösungsmöglichkeiten gesucht werden. Hier will die Erfindung Abhilfe schaffen. Der Erfindung liegt die Aufgabe zugrunde, eine Bohrbüchεe zu schaffen, bei welcher das Kühlmittel direkt in die Bohrbüchse einleitbar ist, so dasε weder die Instrumente noch die Bohrmaεchine umgebaut werden müεsen.In other areas, attempts are made to prevent this heat from being generated by internally cooled drills. However, in order to be able to adopt this method for the osteosynthetic field, a very complex and costly conversion of both the instruments and the drilling machine would be necessary. It was therefore necessary to look for other possible solutions. The invention seeks to remedy this. The invention has for its object to provide a drill sleeve in which the coolant can be introduced directly into the drill sleeve, so that neither the instruments nor the drilling machine have to be converted.
Die Erfindung löst die gestellte Aufgabe mit einer Bohrbüchεe, welche die Merkmale des Anspruchε 1 aufweist.The invention solves this problem with a drill sleeve which has the features of claim 1.
Die Erfindung läsεt εich auf verεchiedene Arten realisieren, bei denen daε Kühlmittel aber immer direkt in die Bohrbüchse eingeleitet wird. Der mit der Erfindung erzieltbare Vorteil liegt darin begründet, dass auf diese Art daε Kühlmittel, welcheε auε phyεiologischer Kochεalzlösung oder aus Ringerlöεung beεteht, direkt an den Arbeitεbereich gelangt und so zu einer unmittelbaren und wirksamen Temperaturreduktion führt .The invention can be implemented in various ways in which the coolant is always introduced directly into the drill sleeve. The advantage that can be achieved with the invention lies in the fact that in this way the coolant, which consists of physiological saline solution or ring solution, reaches the working area directly and thus leads to an immediate and effective temperature reduction.
Auεführungεbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben.Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.
Fig. 1 stellt einen Längsschnitt durch die erfindungsgemäεεe Bohrbüchεe dar;1 shows a longitudinal section through the drill sleeve according to the invention;
Fig. 2 stellt einen Querschnitt längs der Linie II-II in Fig. l dar,- Fig. 3 stellt einen Längsεchnitt durch eine doppelwandige Bohrbüchεe dar,- undFIG. 2 shows a cross section along the line II-II in FIG. 1, 3 shows a longitudinal section through a double-walled drill sleeve, - and
Fig. 4 εtellt einen Querεchnitt längε der Linie IV-IV in Fig. 3 dar.FIG. 4 represents a cross section along the line IV-IV in FIG. 3.
Die in Fig. 1 dargestellte Bohrbüchse beεteht im weεentlichen auε einem Hohlzylinder 7, der einen Haltegriff 9 aufweist. Der Hohlzylinder 7 beεitzt ein obereε Ende 1 zur Einführung eines Instrumenteε oder Implantatε und ein untereε auf den Knochen aufsetzbares, als gezackte Krone ausgebildetes Ende 2. Der Haltgriff 9 ist alε Kühlmittelanεchluεε 3 ausgebildet und weiεt zu dieεem Zweck einen im Inneren verlaufenden Kanal 4 auf, durch welchen Kühlmittel direkt in daε Innere 5 der Bohrbüchεe einleitbar ist. Der Kühlmittelanεchluss 3 weiεt einen Anεchlusεstutzen 11 für einen Schlauch auf, so dass mittels einer Spritze Kühlmittel in die Bohrbüchse einleitbar ist, welcheε das Inεtrument, daε Implantat und den Knochen kühlt.The drill sleeve shown in FIG. 1 essentially consists of a hollow cylinder 7 which has a handle 9. The hollow cylinder 7 has an upper end 1 for the introduction of an instrument or implant and a lower end which can be placed on the bone and is designed as a serrated crown 2. The grip 9 is designed as a coolant connection 3 and has a channel 4 running inside for this purpose. through which coolant can be introduced directly into the interior 5 of the drill sleeve. The coolant connection 3 has a connecting piece 11 for a hose, so that coolant can be introduced into the drill sleeve by means of a syringe, which cools the instrument, the implant and the bone.
Wie in Fig. 2 dargeεtellt weist der Hohlzylinder 7 Längsrillen 6 auf, um die Zirkulation des Kühlmittels im Inneren 5 der Bohrbüchse zu erleichtern. Es ist jedoch auch möglich auf εolche Längsrillen 6 zu verzichten; nur musε dann daε Spiel des Hohlzylinderε 7 im Verhältniε zum verwendeten Inεtrument vergröεεert werden, damit eine genügende Menge Kühlmittel einleitbar iεt. In den Fig. 3 und 4 iεt eine doppelwandige Auεführung der Bohrbüchεe dargeεtellt. Sie ist gleich aufgebaut wie die Auεführung nach Fig. 1, nur dass im Hohlzylinder 7 ein weiterer Hohlzylinder 8 angeordnet ist, so dass zwischen den beiden Hohlzylindern 7,8 ein Hohlraum 10 gebildet wird, der mit dem Kanal 4 deε Haltegriffs 9 in Verbindung εteht und in welchen Kühlmittel durch den Kühlmittelanschluεε 3 eingeleitet werden kann. As shown in FIG. 2, the hollow cylinder 7 has longitudinal grooves 6 in order to facilitate the circulation of the coolant in the interior 5 of the drill sleeve. However, it is also possible to dispense with such longitudinal grooves 6; only then must the clearance of the hollow cylinder 7 be increased in relation to the instrument used so that a sufficient amount of coolant can be introduced. 3 and 4, a double-walled design of the drill sleeve is shown. It is constructed in the same way as the embodiment according to FIG. 1, except that a further hollow cylinder 8 is arranged in the hollow cylinder 7, so that a cavity 10 is formed between the two hollow cylinders 7, 8, which is connected to the channel 4 of the handle 9 and in which coolant can be introduced through the coolant connection 3.

Claims

Patentansprüche claims
1. Bohrbüchse für osteosynthetische Zwecke, insbesondere zum Bohren, Gewindeschneiden und Einbringen von Implantaten, mit einem oberen Ende (1) zur Einführung eines Instrumentes oder Implantats und einem unteren auf den Knochen aufsetzbaren Ende (2), gekennzeichnet durch einen im Bereich des oberen Endes (1) positionierten Kühlmittelanschluεs (3) mit welchem Kühlmittel in die Bohrbüchse einleitbar ist.1. Drill sleeve for osteosynthetic purposes, in particular for drilling, tapping and inserting implants, with an upper end (1) for the introduction of an instrument or implant and a lower end (2) that can be placed on the bone, characterized by an in the area of the upper end (1) positioned coolant connections (3) with which coolant can be introduced into the drill sleeve.
2. Bohrbüchεe nach Anεpruch l, dadurch gekennzeichnet, daεε der Kühlmittelanεchluεε (3) mit einem Kanal (4) verεehen iεt, durch welchen daε Kühlmittel direkt in daε Innere (5) der Bohrbüchεe einleitbar iεt.2. Drill sleeve according to claim 1, characterized in that the coolant connection (3) is provided with a channel (4) through which the coolant can be introduced directly into the interior (5) of the drill sleeve.
3. Bohrbüchεe nach Anspruch 2, dadurch gekennzeichnet, dass das Innere (5) der Bohrbüchse mit Längsrillen (6) versehen ist.3. Bohrbüchεe according to claim 2, characterized in that the interior (5) of the drill sleeve with longitudinal grooves (6) is provided.
4. Bohrbüchse nach Anspruch 1, dadurch gekennzeichnet, dass im Hohlzylinder (7) ein weiterer Hohlzylinder (8) angeordnet ist, εo daεε zwiεchen den beiden Hohlzylindern (7,8) ein Hohlraum (10) gebildet wird, der mit dem Kühlmittelanεchlusε (3) kommuniziert. 4. Drill sleeve according to claim 1, characterized in that a further hollow cylinder (8) is arranged in the hollow cylinder (7), εo daεε between the two hollow cylinders (7, 8), a cavity (10) is formed which is connected to the coolant connection (3 ) communicates.
5. Bohrbüchεe nach einem der Anεprüche l biε 4, dadurch gekennzeichnet, dasε der Kühlmittelanεchluεs (3) als Haltegriff (9) auεgebildet iεt, der einen Kanal (4) für die Durchleitung deε Kühlmittelε aufweiεt. 5. Drill sleeve according to one of the claims 1 to 4, characterized in that the coolant connection (3) is designed as a handle (9) which has a channel (4) for the passage of the coolant.
EP95904373A 1995-01-06 1995-01-06 Cooled drill bushing Withdrawn EP0748187A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1995/000003 WO1996020650A1 (en) 1995-01-06 1995-01-06 Cooled drill bushing

Publications (1)

Publication Number Publication Date
EP0748187A1 true EP0748187A1 (en) 1996-12-18

Family

ID=4549961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95904373A Withdrawn EP0748187A1 (en) 1995-01-06 1995-01-06 Cooled drill bushing

Country Status (3)

Country Link
EP (1) EP0748187A1 (en)
JP (1) JPH09510134A (en)
WO (1) WO1996020650A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999018873A1 (en) * 1997-10-09 1999-04-22 Sesic Nenard Strain-inducing conical screw for stimulating bone transplant growth
EP1463453B1 (en) 2002-01-09 2006-02-22 SYNTHES AG Chur Device for drilling or for inserting implants
US7731721B2 (en) 2003-07-16 2010-06-08 Synthes Usa, Llc Plating system with multiple function drill guide
US7909860B2 (en) 2003-09-03 2011-03-22 Synthes Usa, Llc Bone plate with captive clips
US20050049595A1 (en) 2003-09-03 2005-03-03 Suh Sean S. Track-plate carriage system
EP3112062B1 (en) * 2015-06-30 2023-06-21 Seco Tools Ab A cutting tool
CN209059343U (en) * 2018-04-25 2019-07-05 重庆西山科技股份有限公司 Operation abrasive drilling support component and its abrasive drilling
CN111015354A (en) * 2019-11-22 2020-04-17 江苏新光华机械有限公司 Cooling device of multi-spindle drilling machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320999A (en) * 1980-03-13 1982-03-23 Briese Leonard A Coolant guide for end mill
DE3609122C1 (en) * 1986-03-15 1987-08-13 Mecron Med Prod Gmbh Rotating cutting instrument for surgical purposes
CH681421A5 (en) * 1990-06-06 1993-03-31 Synthes Ag
JPH0585535U (en) * 1992-04-20 1993-11-19 株式会社日研工作所 Tool holder

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
WO1996020650A1 (en) 1996-07-11
JPH09510134A (en) 1997-10-14

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