WO2011035957A1 - Outil médical et dispositif de traitement médical - Google Patents

Outil médical et dispositif de traitement médical Download PDF

Info

Publication number
WO2011035957A1
WO2011035957A1 PCT/EP2010/060878 EP2010060878W WO2011035957A1 WO 2011035957 A1 WO2011035957 A1 WO 2011035957A1 EP 2010060878 W EP2010060878 W EP 2010060878W WO 2011035957 A1 WO2011035957 A1 WO 2011035957A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
medical tool
treatment head
medical
optical element
Prior art date
Application number
PCT/EP2010/060878
Other languages
German (de)
English (en)
Inventor
Christoph Hauger
Original Assignee
Carl Zeiss Surgical Gmbh
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 Carl Zeiss Surgical Gmbh filed Critical Carl Zeiss Surgical Gmbh
Publication of WO2011035957A1 publication Critical patent/WO2011035957A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0088—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for oral or dental tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0066—Optical coherence imaging
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0073—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by tomography, i.e. reconstruction of 3D images from 2D projections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine

Definitions

  • the invention relates to a medical tool, which is rotatable in operation about a longitudinal axis, with a treatment head and an optical fiber, which has a portion which is arranged in the treatment head and which has an end which terminates in an outlet formation of the treatment head
  • nMxinzinische tool has a treatment head in which a portion of an optical fiber is arranged includes an end that terminates in an exit orifice of the treatment head
  • the apparatus further includes an optical coherence tomography (OCT) system for examining a depth range in the tooth.
  • OCT optical coherence tomography
  • an OCT measuring beam is fed to the optical fiber in the treatment head and directed via the outlet opening directly onto the tooth to be searched
  • medical tool in the present invention includes both
  • Tools for the treatment as well as for the examination of biological tissue Medical tools or instruments, in particular surgical or dental medicine tools or instruments, whose principle of operation is based on a rotation of a treatment head, are exposed to high mechanical and / or thermal stress as a result of high rotational frequencies, bending stresses and / or high temperatures occurring during operation.
  • An arrangement of an optical fiber in the Tool also leads to a structural weakening of the treatment head.
  • deposits in a discharge opening influence the light beam, so that an incoming or outgoing light signal is attenuated and / or falsified.
  • An object of the present invention is therefore to provide a medical tool of the type mentioned, which is characterized by improved stability and reliable and reliable insertion and removal of the light beam from the
  • Treatment head excels.
  • the object is achieved by medical tool having the features of claim 1
  • an optical element is arranged at the end of the section of the optical fiber.
  • a beam shaping of the light beam is possible at an exit from the treatment head, whereby an influence of deposits on the outgoing beam is reduced.
  • a conclusion of the exit opening is ideally formed by the optical element, so that the tool at this point has a higher stability.
  • a surface of the optical element is adapted to a surface contour of the treatment head. As a result, the surface of the optical element forms a flush termination of the exit opening with the surface of the treatment head, so that the risk of deposits in the region of the outlet opening is further reduced
  • the optical element is designed as a closing window made of a diamond material.
  • An AbscbJussever is an optical element with a uniform thickness over the element surface to understand. Examples of such an optical element are a plane-parallel plate or a curved or angled plate of constant thickness.
  • the use of a diamond material or other particularly hard carbon compound provides a robust design of the optical element which can withstand high mechanical stress and which improves stability of the entire treatment head
  • the optical element is designed as a collimating, ie after infinite imaging element or as a focusing refractive element. Due to the collimating or focusing configuration of the optical element, the divergence of the exiting light beam can be influenced with simple means.
  • the element is designed as a lens which focuses the light beam on the tissue to be examined or on a region immediately before a Auslingersöfmung or on the outlet cross section of the Auslingersöfmung the treatment head thus can be achieved good measurement results in the examination level.
  • the optical element is designed as a Grin lens
  • the medical tool is designed as a dental drill, wherein the treatment head is designed as a drill head dental drills are characterized by particularly high mechanical loads, so that an embodiment of the invention proves to be particularly advantageous.
  • a medical treatment device comprises a base body and a
  • the invention also relates to an OCT system for examining a depth range in a tissue with a further optical fiber in which an OCT measuring beam can be guided.
  • the OCT measuring beam can be introduced from the further optical fiber into the optical fiber of the medical tool.
  • Fig. 1 shows a medical treatment device in the form of a schematic
  • Fig. 2 is a known from the prior art embodiment of a medical
  • Fig. 3 shows an embodiment of a medical tool according to the invention.
  • FIG. 1 A medical treatment device known in the art which is embodied as a dental drill is shown in FIG.
  • the dental drill comprises a base body 1 with a handpiece 3 and a tool holder 6 and a dental treatment or care instrument in the form of a dental drill 37.
  • the dental drill further includes an OCT system for examining a dental drill
  • the analysis device 9 and the control unit 13 are connected to the White light interferometer 7 for receiving the mterferometriesignals or for the delivery of control signals connected.
  • the white light interferometer includes a broadband light source 15 which has a short to very short coherence length. The light emitted by the light source is transmitted in the
  • the white light interferometer 7 also comprises a reference beam branch 17 and a measuring beam branch 19, a splitter and superimposer 21, which in the present
  • Exemplary embodiment is shown as a beam splitter, and a detector 23rd
  • the white light emitted by the broadband light source 15 is split by the beam splitter 21 into a measuring beam and a reference beam, which are then coupled into the measuring beam branch 19 or the reference scraping branch 17.
  • the reference beam is guided to a reflector 29 where it is reflected and guided back to the beam splitter 21
  • FIG. 2 Also shown in FIG. 2 is a tooth 39 in which the pulp 41, the dentin 43 and the enamel 45 can be seen.
  • the dental drill 37 is used to drill tooth enamel 45 and dentin 43, for example to remove tooth decay.
  • a depth examination can be carried out and, in particular, a distance between a surface 47 of the tooth 39 and the interface between the pulp 41 and the dentin 43 can be determined, so that when the minimum distance is not reached, suitable measures are taken Avoiding an opening of the pulp, for example, an automatic stop of the dental drill 37 or generating an optical or audible warning signal, can be taken.
  • a medical tool according to the invention is shown, which is designed as a dental drill 37
  • the optical fiber 25 is guided along a rotation axis 54 of the dental drill 37 to the drill head 80 and terminates in a Austrittsöfthung 81, in this case as a channel is performed to a surface of the drill head 80.
  • the optical fiber 25 ends at a small distance to the surface of the drill head 80th
  • a grin lens 82 and a closure window 83 are arranged at the end of the optical fiber 25 at the end of the optical fiber 25.
  • an OCT measurement beam emerging from the end of the optical fiber 25 with a numerical aperture of approximately 0.11 can be collimated or focused, that is to say the OCT beam.
  • Measuring beam hits collimated or focused on the tooth tissue.
  • the termination window 83 is preferably made of a diamond or other transmissive and durable carbon compound and provides protection against mechanical damage to the lenslet lens 82 and the optical fiber 25.
  • the flush fit of the termination window 83 into the exit channel further enhances the stability of the drill head 80
  • the surface of the closure window 83 is adapted to the surface contour of the drill head 80, so that between the surfaces of the drill head and
  • the dental drill is performed without Grin lens, so that the tooth tissue is illuminated directly in operation with divergent light from the optical fiber.
  • the diamond end window itself is designed as an optical element with beam-forming effect
  • a portion of the optical fiber in the drill head is led out of the drill head at an angle to the axis. This makes it possible to scan a side region, for example a wall region of a root canal, with the aid of the device.
  • the optical fiber has a second section which is arranged in the treatment head and which comprises a second end which opens out in a second outlet opening of the treatment head.
  • a beam splitter is arranged in the treatment head, by means of which the light beam is divisible into a first part beam and a second part, wherein the first partial beam is introduced into the first portion of the first optical fiber and the second partial beam in the second portion of the first optical fiber can be introduced
  • the treatment head thus comprises a plurality of exit openings, from which light beams can be diverted, so that measurements on the object to be examined or treated are possible at each of the exit openings. With a treatment head so measurements can be made at different locations. Particularly advantageous is an arrangement in which the first outlet opening on a
  • Rotary axis of the medical tool is arranged and the second outlet opening is positioned on one side of the treatment head, so that when working in a too
  • the object can be measured, both the channel bottom and a channel wall.
  • the object can also more than two
  • Outlet openings may be provided in the treatment head.
  • the portion of the optical fiber 25 disposed in the dental drill is fixedly connected to the latter.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Dentistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un outil médical pouvant tourner autour d'un axe longitudinal en fonctionnement, comportant une tête de traitement et une fibre optique présentant une partie logée dans la tête de traitement, cette partie comprenant une extrémité aboutissant dans une ouverture de sortie de la tête de traitement. Selon l'invention, un élément optique est disposé sur l'extrémité de la partie de la fibre optique.
PCT/EP2010/060878 2009-09-28 2010-07-27 Outil médical et dispositif de traitement médical WO2011035957A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009043051A DE102009043051A1 (de) 2009-09-28 2009-09-28 Medizinisches Werkzeug und medizinische Behandlungsvorrichtung
DE102009043051.2 2009-09-28

Publications (1)

Publication Number Publication Date
WO2011035957A1 true WO2011035957A1 (fr) 2011-03-31

Family

ID=42829957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/060878 WO2011035957A1 (fr) 2009-09-28 2010-07-27 Outil médical et dispositif de traitement médical

Country Status (2)

Country Link
DE (1) DE102009043051A1 (fr)
WO (1) WO2011035957A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265184A (zh) * 2014-08-04 2015-01-07 江西华煤重装有限公司 一种智能在线钻杆

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179611B1 (en) * 1999-01-22 2001-01-30 The Regents Of The University Of California Dental optical coherence domain reflectometry explorer
US20020120197A1 (en) * 1999-05-07 2002-08-29 Kleffner Bernhard V. Rotating surgical tool
WO2007006698A1 (fr) * 2005-07-08 2007-01-18 Technische Universiteit Delft Systeme de foret chirurgical et foret chirurgical destine a etre utilise dans ce dernier
US20090079993A1 (en) * 2005-11-22 2009-03-26 Shofu Inc. Dental Optical Coherence Tomograph
US20090155735A1 (en) * 2007-12-18 2009-06-18 Carl Zeiss Surgical Gmbh Dental treatment or examination apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6179611B1 (en) * 1999-01-22 2001-01-30 The Regents Of The University Of California Dental optical coherence domain reflectometry explorer
US20020120197A1 (en) * 1999-05-07 2002-08-29 Kleffner Bernhard V. Rotating surgical tool
WO2007006698A1 (fr) * 2005-07-08 2007-01-18 Technische Universiteit Delft Systeme de foret chirurgical et foret chirurgical destine a etre utilise dans ce dernier
US20090079993A1 (en) * 2005-11-22 2009-03-26 Shofu Inc. Dental Optical Coherence Tomograph
US20090155735A1 (en) * 2007-12-18 2009-06-18 Carl Zeiss Surgical Gmbh Dental treatment or examination apparatus
DE102007063419A1 (de) 2007-12-18 2009-06-25 Carl Zeiss Surgical Gmbh Zahnbehandlungs- oder- untersuchungsvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104265184A (zh) * 2014-08-04 2015-01-07 江西华煤重装有限公司 一种智能在线钻杆

Also Published As

Publication number Publication date
DE102009043051A1 (de) 2011-04-07

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