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WO1995017845A1 - Systeme video endoscopique - Google Patents

Systeme video endoscopique Download PDF

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Publication number
WO1995017845A1
WO1995017845A1 PCT/DE1995/000001 DE9500001W WO9517845A1 WO 1995017845 A1 WO1995017845 A1 WO 1995017845A1 DE 9500001 W DE9500001 W DE 9500001W WO 9517845 A1 WO9517845 A1 WO 9517845A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
light source
light
illuminating
light guide
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
Application number
PCT/DE1995/000001
Other languages
German (de)
English (en)
Inventor
Klaus-Martin Irion
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.)
Karl Storz SE and Co KG
Original Assignee
Karl Storz SE and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6506577&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1995017845(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Karl Storz SE and Co KG filed Critical Karl Storz SE and Co KG
Priority to DE19580002T priority Critical patent/DE19580002D2/de
Publication of WO1995017845A1 publication Critical patent/WO1995017845A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/07—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements using light-conductive means, e.g. optical fibres
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00112—Connection or coupling means
    • A61B1/00117—Optical cables in or with an endoscope
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0638—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements providing two or more wavelengths
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0646—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements with illumination filters

Definitions

  • the invention relates to an endoscopic video system.
  • video systems In endoscopy and especially in minimally invasive therapy, video systems have been used increasingly for some time in order to display the recorded image on a TV monitor and / or to record it by means of a video recorder and, if necessary, to further process it with an image processing system.
  • the known endoscopic video systems have an illuminating light source, a light guide system that guides the light to at least one distal light outlet, and at least one video color image sensor with an associated optical system and a downstream electronic processing system.
  • illuminating light sources are still used as illuminating light sources, which have the same spectral course as the illuminating light sources. have light sources that are used to illuminate a visually observed object.
  • the spectral profile of these conventional illuminating light sources is chosen so that a "natural" color impression is produced when viewed visually.
  • the conversion filter Because of the very high red sensitivity of the image sensor, the conversion filter has a very high attenuation, especially in this area.
  • the main disadvantage is that at least 30% of the light output falling on the color image sensor is not used because of the conversion filter in front of the image sensor and is not required because of the spectral characteristics of the image sensor, but is nevertheless coupled into the body and converted into heat. Since the light output falling from the object (tissue) onto the color image sensor is at least one order of magnitude lower than the light output coupled into the body, it is advisable to avoid unnecessary heat by inserting the conversion filter into the light guide system or to integrate the illuminating light source, ie to place it outside the body.
  • At least one spectral filter is arranged in the illuminating light source or in the light guide system, which is designed in such a way that it adjusts the spectral distribution of the visible light from the light source to the spectral sensitivity of the color image sensor.
  • the arrangement of the conversion or. Spectral filters in the illumination beam path have the advantage over the arrangement of the filter in the observation beam path that the light output required to illuminate the object to be observed is at least 30% less than when the filter is arranged in the observation beam path.
  • the possibly still necessary infrared cut filter (claim 12) for suppressing the quality-impairing infrared radiation can simply be applied to the cover glass of the CCD sensor if the conversion filter is omitted.
  • the invention can be used both with color image recorders arranged distally, ie in the endoscope or instrument without an image relay, and with video cameras arranged proximally, which are flanged onto the eyepiece of the endoscope, for example, or in front of the eyepiece or without the eyepiece directly capture the image of the image relay, such as a rod lens system.
  • the filter can be assembled in such a way that at least 25% of the light output in this range is blocked in the wave range from 400 to 700 nm.
  • the filter can have the following transmission values:
  • any filter but preferably dichroic filter, can be used as the filter.
  • Claims 5 to 7 specify various options for the arrangement of the filter:
  • the arrangement of the filter on the proximal entry surface of the light guide system has the advantage that the light guide system is acted upon with the lowest possible light output without any intervention in the illuminating light source.
  • Endoscopic video systems generally have an instrument and in particular an endoscope that is inserted into a hollow rough, for example, can be used in a human body, and in which a light guide for the illuminating light is integrated.
  • a coupling element - for example a light standard plug - is provided, by means of which the light guide of the instrument can be connected to a light guide cable, which in turn is connected to the illuminating light source.
  • This embodiment is i.a. preferred if a video camera is used which is coupled proximally to an endoscope, since then both commercially available endoscopes and illuminating light sources can be used.
  • the filter can be placed on the light entry surface of the coupling element on the instrument or endoscope or, according to claim 6, on the distal exit surface of the instrument and thus of the light guide system are applied. This possibility has the advantage that it is structurally particularly easy to implement. In addition, it allows the separation of light guide cable and endoscope.
  • the filter can also be arranged in the illuminating light source (claim 7). If the illuminating light source is designed in such a way that the filter can be removed from the illuminating beam path, the illuminating light source can be used both for visual observation and for pure video detection.
  • a simple technical configuration for the arrangement of the filter in the illuminating light source is characterized in claim 9, according to which the filter can be automatically or manually pivoted in or out of the illuminating beam path.
  • the plug of the light guide cable can, for example, be provided with a code which indicates whether visual observation or image acquisition is carried out with a color image sensor.
  • the filter can in particular in front of the light guide entry surface in the illuminating light source, i.e. be arranged the surface by means of which the light is coupled into the light guide cable (claim 10).
  • FIG. 1 shows an embodiment for an endoscopic video system according to the invention
  • the video system has an endoscope 1, in which a color image pickup 4 is arranged distally.
  • the invention can also be used for proximally arranged color image recorders.
  • the color image pickup 4 is, for example, a charged coupled device (CCD).
  • CCD charged coupled device
  • the image of an endoscopic scene recorded by the CCD 4 by means of a lens 7 is further processed by a downstream processing circuit 3, which can be a hybrid circuit, for example. With 6 a low-pass filter or an infrared cut filter is designated.
  • the circuit 3 is connected via electrical lines 2 in the endoscope 1 and a cable 10 removably connected to the endoscope 1 with a plug 11 to a conventional video unit (not shown) so that the object, i.e. the endoscopic scene can be viewed on a monitor, for example.
  • the endoscope 1 has a light guide 5, which can be arranged in the shape of a hollow cylinder, in particular, on the outer region of the interior of the endoscope shaft.
  • a light guide cable 9 is provided, which is provided with known and not further designated plugs and which has a light guide 5 1 contains, which is connected on the light entry side with the illuminating light source and on the light exit side with the light guide 5.
  • the cables 9 and 10 are partially combined to form a cable 12.
  • the light of the illumination light source 9 is coupled via a conversion filter 8 in the light guide 5 of the cable 1 at the source for connection to theestablishedsander ⁇ provided Lichteinkoppelstutzen.
  • the transmission curve can vary depending on the image pickup unit 4 used, to which the filter 8 is to be adapted.
  • the invention has been described above on the basis of an exemplary embodiment without restricting the general applicability.
  • the invention can be used both with rigid and with flexible endoscopes with proximally or distally arranged image recorders.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)

Abstract

L'invention a pour objet un système vidéo endoscopique comprenant une source lumineuse d'éclairage, un système conducteur de lumière (5, 5') qui transporte la lumière au moins jusqu'à une sortie distale de lumière, et au moins un appareil de prise de vues vidéo en couleur (4) équipé d'un système optique correspondant (7). L'invention est caractérisée en ce qu'au moins un filtre spectral (8) placé dans la source lumineuse d'éclairage ou dans le système conducteur de lumière est conçu pour adapter la répartition spectrale de la lumière visible de la source lumineuse à la sensibilité spectrale de l'appareil de prise de vues en couleur (4).
PCT/DE1995/000001 1993-12-31 1995-01-02 Systeme video endoscopique Ceased WO1995017845A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19580002T DE19580002D2 (de) 1993-12-31 1995-01-02 Endoskopisches Videosystem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4345066.0 1993-12-31
DE4345066 1993-12-31

Publications (1)

Publication Number Publication Date
WO1995017845A1 true WO1995017845A1 (fr) 1995-07-06

Family

ID=6506577

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1995/000001 Ceased WO1995017845A1 (fr) 1993-12-31 1995-01-02 Systeme video endoscopique

Country Status (2)

Country Link
DE (1) DE19580002D2 (fr)
WO (1) WO1995017845A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600101A3 (fr) * 2004-05-25 2006-02-01 Fujinon Corporation Connecteur d'endoscope, sortie de cables et dispositif endoscopique
JP2008023101A (ja) * 2006-07-21 2008-02-07 Fujifilm Corp 電子内視鏡システム
DE102018202243A1 (de) 2018-02-14 2019-08-14 Richard Wolf Gmbh Medizinisch-endoskopisches Instrument
DE102020202686A1 (de) 2020-03-03 2021-09-09 Richard Wolf Gmbh Medizinisch-endoskopisches Instrument
DE102020202687A1 (de) 2020-03-03 2021-09-09 Richard Wolf Gmbh Medizinisch-endoskopisches Instrument

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619288A (en) * 1979-07-26 1981-02-23 Dainippon Printing Co Ltd Color solid state image pickup element plate
US4713683A (en) * 1984-08-31 1987-12-15 Olympus Optical Co., Ltd. Illuminating and synchronizing device for color imaging equipment
US4916534A (en) * 1987-04-28 1990-04-10 Olympus Optical Co., Ltd. Endoscope
US4987884A (en) * 1984-12-28 1991-01-29 Olympus Optical Co., Ltd. Electronic endoscope

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1184450B (de) * 1962-11-05 1964-12-31 Karl Storz Endoskop mit einer getrennt angeordneten Beleuchtungseinrichtung
JPS5929681Y2 (ja) * 1974-12-26 1984-08-25 株式会社メドス研究所 内視鏡における自動露出制御用測光装置
JP2666856B2 (ja) * 1988-10-15 1997-10-22 オリンパス光学工業株式会社 内視鏡用光源装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5619288A (en) * 1979-07-26 1981-02-23 Dainippon Printing Co Ltd Color solid state image pickup element plate
US4713683A (en) * 1984-08-31 1987-12-15 Olympus Optical Co., Ltd. Illuminating and synchronizing device for color imaging equipment
US4987884A (en) * 1984-12-28 1991-01-29 Olympus Optical Co., Ltd. Electronic endoscope
US4916534A (en) * 1987-04-28 1990-04-10 Olympus Optical Co., Ltd. Endoscope

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 70 (E - 056) 12 May 1981 (1981-05-12) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1600101A3 (fr) * 2004-05-25 2006-02-01 Fujinon Corporation Connecteur d'endoscope, sortie de cables et dispositif endoscopique
CN100438818C (zh) * 2004-05-25 2008-12-03 富士能株式会社 内窥镜的连接装置、内窥镜用电缆导出单元和内窥镜装置
US7695429B2 (en) 2004-05-25 2010-04-13 Fujinon Corporation Endoscope connector device, endoscope cable lead-out unit and endoscope device
JP2008023101A (ja) * 2006-07-21 2008-02-07 Fujifilm Corp 電子内視鏡システム
EP1880661A3 (fr) * 2006-07-21 2010-07-28 FUJIFILM Corporation Système endoscopique électronique
US8269824B2 (en) 2006-07-21 2012-09-18 Fujifilm Corporation Electronic endoscope system for estimating and producing spectral image of arbitrary wavelength band from image signals captured under general illumination light and those captured under specific illumination light
DE102018202243A1 (de) 2018-02-14 2019-08-14 Richard Wolf Gmbh Medizinisch-endoskopisches Instrument
WO2019158168A1 (fr) 2018-02-14 2019-08-22 Richard Wolf Gmbh Instrument médical endoscopique
US11627871B2 (en) 2018-02-14 2023-04-18 Richard Wolf Gmbh Medical endoscopic instrument
DE102020202686A1 (de) 2020-03-03 2021-09-09 Richard Wolf Gmbh Medizinisch-endoskopisches Instrument
DE102020202687A1 (de) 2020-03-03 2021-09-09 Richard Wolf Gmbh Medizinisch-endoskopisches Instrument
WO2021175386A1 (fr) 2020-03-03 2021-09-10 Richard Wolf Gmbh Instrument médical endoscopique
WO2021175387A1 (fr) 2020-03-03 2021-09-10 Richard Wolf Gmbh Instrument endoscopique médical

Also Published As

Publication number Publication date
DE19580002D2 (de) 1996-04-25

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