EP3515283A1 - Système endoscopique et source lumineuse d'un système endoscopique - Google Patents

Système endoscopique et source lumineuse d'un système endoscopique

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Publication number
EP3515283A1
EP3515283A1 EP17805117.3A EP17805117A EP3515283A1 EP 3515283 A1 EP3515283 A1 EP 3515283A1 EP 17805117 A EP17805117 A EP 17805117A EP 3515283 A1 EP3515283 A1 EP 3515283A1
Authority
EP
European Patent Office
Prior art keywords
endoscope
optical fibers
light source
cable
light
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Withdrawn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
EP17805117.3A
Other languages
German (de)
English (en)
Inventor
Thorsten JÜRGENS
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.)
Olympus Winter and Ibe GmbH
Original Assignee
Olympus Winter and Ibe 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 Olympus Winter and Ibe GmbH filed Critical Olympus Winter and Ibe GmbH
Publication of EP3515283A1 publication Critical patent/EP3515283A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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
    • A61B1/07Instruments 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00002Operational features of endoscopes
    • A61B1/00004Operational features of endoscopes characterised by electronic signal processing
    • A61B1/00009Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
    • A61B1/000094Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope extracting biological structures
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00002Operational features of endoscopes
    • A61B1/00057Operational features of endoscopes provided with means for testing or calibration
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00112Connection or coupling means
    • A61B1/00117Optical cables in or with an endoscope
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00112Connection or coupling means
    • A61B1/00121Connectors, fasteners and adapters, e.g. on the endoscope handle
    • A61B1/00126Connectors, fasteners and adapters, e.g. on the endoscope handle optical, e.g. for light supply cables
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00163Optical arrangements
    • A61B1/00165Optical arrangements with light-conductive means, e.g. fibre optics
    • A61B1/00167Details of optical fibre bundles, e.g. shape or fibre distribution
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/04Instruments 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
    • A61B1/045Control thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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
    • A61B1/0605Instruments 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 for spatially modulated illumination
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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
    • A61B1/063Instruments 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 for monochromatic or narrow-band illumination
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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
    • A61B1/0655Control therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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
    • A61B1/0661Endoscope light sources
    • A61B1/0669Endoscope light sources at proximal end of an endoscope
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/06Instruments 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
    • A61B1/0661Endoscope light sources
    • A61B1/0684Endoscope light sources using light emitting diodes [LED]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/00002Operational features of endoscopes
    • A61B1/00062Operational features of endoscopes provided with means for preventing overuse
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/12Instruments 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 cooling or rinsing arrangements
    • A61B1/128Instruments 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 cooling or rinsing arrangements provided with means for regulating temperature

Definitions

  • the invention relates to an endoscopy system having an endoscope, a light source and a light guide cable connecting the light source to the endoscope, wherein the endoscope comprises at least one bundle of endoscope optical fibers, the cable comprises at least one bundle of cable optical fibers, a light source coupling point is provided at which light the
  • Light source is coupled into the at least one bundle of cable optical fibers, and an endoscope coupling point is provided, at which light of the light source from the at least one bundle of cable optical fibers is coupled into the at least one bundle of endoscopic optical fibers.
  • the invention further relates to a light source of a corresponding endoscopy system.
  • Corresponding endoscopy systems have long been successfully used to visually inspect hard to reach cavities in technical equipment or in animal or human patients.
  • the endoscope serves to take a picture of the inner surface of the cavity and to provide it outside the cavity.
  • Illumination usually takes place via endoscopes extending inside the endoscope.
  • the light source used for illumination is designed as a separate device, the light is then passed to the endoscope optical fibers via laid in a light guide cable optical fibers.
  • the light is coupled into the light guide cable at a light source coupling point.
  • the light guide cable is inserted into a receptacle of the light source, so that the ends of the cable optical fibers are arranged in a plane which is illuminated by the light source.
  • the connection of the light source with the light guide cable is usually carried out detachable.
  • the light is coupled into the endoscope optical fibers at an endoscope coupling point from the cable optical fibers.
  • the ends of the endoscope optical fibers and the cable optical fibers are arranged with the smallest possible distance from each other, it can be provided to adjust the numerical aperture of the respective fibers, a fiber cone.
  • the connection of the light guide cable to the endoscope can be fixed or detachable.
  • Endoscope coupling point to a warming of the endoscope which is undesirable for various reasons. This effect is exacerbated by the fact that newer endoscope generations require more light due to higher optical resolution and larger fields of view.
  • Endoscope a light source and the light source with the endoscope connecting
  • Optical fiber cable wherein the endoscope comprises at least one bundle of endoscope optical fibers, the cable comprises at least one bundle of cable optical fibers, a light source coupling point is provided at which light of the light source in the at least one bundle of
  • Cable optical fibers is coupled, and an endoscope coupling point is provided, at which light of the light source from the at least one bundle of cable optical fibers is coupled into the at least one bundle of endoscope optical fibers, which is further developed in that the light source is arranged to selectively illuminate individual cable optical fibers or groups of cable optical fibers at the light source coupling station, and that the Light source is associated with a control device which is able to control the light source such that only or predominantly such cable optical fibers are selectively illuminated, which are coupled to the endoscope coupling point with endoscope optical fibers.
  • groups of cable optical fibers is understood to mean groups of cable optical fibers which comprise more than one cable optical fiber and less than all cable optical fibers, preferably less than 20%, particularly preferably less than 2% of all Alternatively, a group of cable optical fibers may also comprise about 3 to 20, 10 to 100, or 20 to 200 cable optical fibers
  • such cable optical fibers are considered to be coupled to endoscope optical fibers in which the light coupled into the cable optical fiber from the light source has a sufficient coupling efficiency, for example at least 50%, preferably at least 75%, into one or more endoscopes Optical fibers is coupled.
  • the invention has recognized that not every cable optical fiber is opposite to an endoscope optical fiber at the endoscope coupling point. Due to positioning errors and
  • Differences in diameter between the coupled fiber bundles causes light from some cable optical fibers on the side of the endoscope optical fibers, for example, to be emitted onto fillers or metal frames and absorbed there. As a result, the endoscope is unnecessarily heated in the area of the endoscope coupling point.
  • the light source is arranged to selectively illuminate individual positions of a predetermined position grid at the light source coupling point
  • the controller is associated with a memory in which for the individual positions of the position grid information is stored, whether at the respective position to be illuminated cable optical fiber is located.
  • the position grid can be, for example, an orthogonal or hexagonal grid. Alternatively, it may be a concentric or spiral polar grid.
  • the light source comprises at least one movable mirror with which the light of the light source can be deflected in the direction of the respective positions of the position grid.
  • the at least one mirror is preferably a digital micromirror device (DMD).
  • the selective illumination of individual positions of the position grid can be realized in a straightforward manner by using at least one movable mirror, in particular by using DMDs.
  • a single, fixed light source can be used, whose light is then deflected by the at least one movable mirror to the respective position to be illuminated. It is therefore not necessary to provide a separate light source for each individual position.
  • a DM Ds a collimated light beam can be generated by means of a single light source, the diameter of which is adapted to illuminate all possibly to be illuminated positions.
  • the DM D can have a micromirror which deflects a part of the light beam either in the direction of the position to be illuminated or in the direction of an absorber.
  • the light source comprises a light-emitting diode or a laser diode.
  • Such light sources are durable and can with sufficient Speed on and off to allow sequential lighting of the individual positions of the position grid.
  • individual endoscope optical fibers of the at least one bundle of endoscope optical fibers are arranged in the endoscope so that they emit light in different directions, and information about the direction is stored in the memory of the control device for individual positions of the position grid.
  • light is radiated from an endoscope optical fiber which is coupled to a cable optical fiber, which is arranged at the corresponding position.
  • it is additionally possible to deliver the light selectively or preferably only in such endoscope optical fibers that emit it in a desired direction.
  • individual areas of the cavity to be observed can be deliberately weaker or more intensively illuminated in order, for example, to emphasize certain structures or to reduce disturbing reflections.
  • the endoscope can have a variable viewing direction. Illumination light can then preferably be emitted in the direction which corresponds to the currently set viewing direction of the endoscope.
  • the endoscopy system comprises a
  • Image recording device for recording images generated by the endoscope and an image evaluation device for evaluating the images recorded by image recording device, wherein the image evaluation device and the control device are coupled to each other and configured to determine whether there is a cable optical fiber at a position illuminated by the light source, the is coupled at the coupling point with an endoscope optical fiber, and / or in which direction light is emitted from an endoscope optical fiber, which is coupled to a cable optical fiber, which is arranged at the corresponding position.
  • Image evaluation device is then determined whether and if necessary how much the illumination of the specific position leads to an increase in the brightness of the recorded image, and at which point of the image the brightness is increased. Thus, it can be determined whether the cable optical fiber disposed at the respective position is operatively coupled to an endoscope optical fiber and how high the coupling efficiency is. Likewise, information about the emission direction of the coupled endoscope optical fiber can be obtained. The information thus obtained is then stored in the memory for the respective illuminated position.
  • the endoscopy system is provided either to operate in an observation mode in which only those positions of the position grid are selectively illuminated, where cable optical fibers are located, which are coupled at the coupling point with endoscope optical fibers, and / or to which are cable optical fibers which are coupled at the coupling point with endoscope optical fibers, the light in a desired
  • Image recording device the image evaluation device and the controller cooperate to determine whether at the respective illuminated positions of the position grid cable optical fibers are arranged, which are coupled at the coupling point with endoscope optical fibers, and possibly in which direction emitted light from these endoscope optical fibers becomes.
  • the object is further achieved by a light source of an endoscopy system, which is designed according to the above statements.
  • FIG. 5 An endoscopy system according to another aspect of the invention
  • FIG. 1 shows an endoscopy system according to the prior art.
  • the endoscopy system comprises an endoscope 1, a light guide cable 2 and a light source 3.
  • the endoscope 1 has a shaft 11, a main body 12 and an eyepiece funnel 13.
  • an objective 14 is arranged at the distal end of the shaft 11.
  • the objective 14 produces an image of a structure S of interest, which is transported through an optical image conductor 15 through the main body 12 into the eyepiece funnel 13. There, the image is imaged through the eyepiece 16 so that it can be perceived by a user looking through the ocular funnel 13 into the endoscope 1.
  • endoscope optical fibers 17 are laid, which end proximally in a light guide socket 18 on a fiber cone 19. Distal end the endoscope optical fibers at the end of the shaft 11th
  • the light guide cable 2 connects the endoscope 1 with the light source 3. It comprises a first connector 50, which is plugged onto the light guide neck 18 of the endoscope 1, and a second connector 51, which is inserted into the light source 3.
  • the optical cable 2 is used by cable
  • optical fibers 52 Passed through optical fibers 52, which are shown for the sake of clarity only in the region of the plug 50, 51.
  • the transition from the light guide cable 2 to the fiber cone 19 in the light guide socket 18 forms an endoscope coupling point.
  • the end surfaces of the cable optical fibers 52 in the second connector 51 form a light source coupling point.
  • the light source 3 comprises a luminous means 61 whose light from a collimator 62 on the
  • the light-emitting means 61 may be, for example, a high-pressure xenon lamp or a powerful light-emitting diode.
  • the camera head 20 placed in which in turn an objective 21 and an image sensor 22 are arranged.
  • the image of the structure S is imaged by the lens 21 on the image sensor 22 and converted by the latter into a video signal, which via a cable 23 to a Camera control unit 30 is transmitted.
  • the camera head 20 may include a focusing device 24.
  • the camera control unit comprises a video processor 31, which processes the video signal coming from the camera head 20 for display on a monitor 40 and / or for recording on a storage device 41. Furthermore, the camera control unit comprises a
  • Control unit 32 for generating control signals for the image sensor 22. Furthermore, the camera control unit 30 comprises an image evaluation device 33, which evaluates the recorded video image with respect to various criteria. So can the
  • Image evaluation unit 33 to evaluate the sharpness and send a signal to the focusing device 24 to move the lens 21 to improve the image sharpness.
  • Image analyzer 33 may also evaluate the brightness and / or contrast of the image and send a signal to controller 32 to change the exposure time of imager 22. Furthermore, the image evaluation unit 33 can send a signal to the light source 3 to adjust the illumination intensity.
  • the end surface of the cable optical fibers in the plug 50 is slightly larger than the end face of the fiber cone 19. This is because the cable 2 can be used in addition to the endoscope 1 also with other types of endoscopes having more endoscope optical fibers and thus also have a larger fiber cone. Therefore, the end surface of the cable optical fibers is dimensioned so that the fiber cone is fully illuminated in all endoscope types. Light which is conducted via cable optical fibers 52, whose end face outside the
  • Cross-section of the fiber cone 19 are arranged is absorbed in the light pipe 18 and therefore leads to a heating of the endoscope.
  • FIG. 2 shows a modified endoscopy system.
  • the endoscopy system in turn comprises an endoscope 101, a light-conducting cable 102 and a light source 103.
  • the light source 103 comprises a light source 161, which in the illustrated example is a laser diode or a white light LED with a collimator.
  • the light beam 167 of the luminous means 161 is directed via two pivoting mirrors 163, 164 in the direction of the end face of the cable optical fibers 150.
  • the pivot mirrors 163, 164 are driven by micromotors 165, 166 so that the light beam 167 passes over individual positions of the end face of the cable optical fibers 152 according to a predetermined pattern.
  • control device 168 continues to turn on the light source 161 when the light beam is directed to a cable optical fiber 152 which faces the fiber cone 119 at the endoscope coupling point and is thus coupled to an endoscope optical fiber 117.
  • control device 168 switches off the light source 161 when the light beam is directed onto a cable optical fiber 152 which is connected to the endoscope.
  • Coupling point is not opposite the fiber cone 119 and thus is not coupled to an endoscope optical fiber 117. Heating of the endoscope 101 by light absorbed in the light guide socket 118 is thereby considerably reduced.
  • the light beam 167 may also simultaneously illuminate a group of cable optical fibers.
  • a group may contain less than 20% of all cable Comprise optical fibers, or less than 2% of all cable optical fibers.
  • One group may consist of 3 to 20, 10 to 100 or 20 to 200 cable optical fibers.
  • the controller 168 is associated with a memory 169 in which data of a
  • predetermined position rasters are deposited, which is traversed by the light beam 167.
  • Different position patterns are shown in FIGS. 3a to 3d.
  • FIG. 3 a shows an orthogonal position grid 201 in which rectangular, preferably square, cells 202 are arranged without gaps. Each cell 202 is determined by its position with respect to two orthogonal axes 203, 204.
  • the end surface 205 of the bundle of cable optical fibers 152 is indicated, which are arranged in the light source coupling point. In the end face, such cable optical fibers 152 coupled to endoscope optical fibers 117 and such cable optical fibers not coupled to endoscope optical fibers 117 are unsorted
  • the position grid 201 is shown in FIG. 3a for better visibility with very little position resolution.
  • the position resolution will be chosen to be at least so high that the area of individual cells 202 is approximately the same as the cross section of a cable optical fiber 152 or a small group of cable optical fibers 152.
  • FIG. 3b shows an alternative embodiment of a position grid 301, which is a hexagonal grid.
  • the cells 302 are implemented as uniform hexagons and are arranged without gaps in the grid 301.
  • Each cell is uniquely determined by its position with respect to two axes 303, 304, with the axes 303, 304 disposed at an angle of 60 ° to each other.
  • the end face 305 of the bundle of cable optical fibers 152 is indicated, which are arranged in the light source coupling point.
  • the hexagonal arrangement of the cells 302 in the position grid 301 is particularly well suited to mimic the actual location of the cable optical fibers 152 because the cable optical fibers 152 are typically round in cross-section and also largely hexagonal in a tight package.
  • FIG. 3 c shows an alternative position grid 401 with a concentric polar construction.
  • the cells 402 are each designed as ring segments.
  • the individual cells 402 of the position grid 401 are not consistently congruent to one another.
  • Each cell 402 is uniquely defined by its distance to the center 403 of the position grid and its angle to a reference axis 404. In order to ensure an approximately equal area of all cells 402, the angular resolution of the position grid 402 can be increased with increasing distance from the center 403.
  • the end face 405 of the bundle of cable optical fibers 152 is indicated, which are arranged in the light source coupling point.
  • FIG. 3d shows a further alternative embodiment of the position grid 501 with a spirally polar structure.
  • the cells 502 are arranged along a spiral-shaped line 503, which starts from the center 504 of the position grid 501.
  • the length of all cells 502 in the direction of line 503 is approximately the same.
  • each cell 502 of the position grid 501 is uniquely determined solely by its position along the line 503.
  • the end face 505 of the bundle of cable optical fibers 152 is indicated, which are arranged in the light source coupling point.
  • the structure of the position grid 501 is well suited for imaging the cross section of the light guide cable 103.
  • this structure can be moved particularly easily by moving the tilt mirrors 163, 164.
  • the controller 168 turns on
  • Illuminant 161 on or off.
  • the movement of the position grid 201, 301 through the light beam 167 is performed line by line, wherein between two lines, the scanning direction can be reversed.
  • the light beam 167 then moves meandering over the respective position grid.
  • the position grid 401 is preferably traveled in an annular manner, wherein the direction of rotation remains the same for all rings.
  • the position grid 501 is traveled in a corresponding spiral. This is illustrated by arrows 208, 308, 408, 508, respectively.
  • FIG. 4 shows a light source 603 which can be used instead of the light source 103 in the endoscopy system shown in FIG.
  • the light source 603 comprises a luminous means 661, for example a high-power white-light LED, to which a collimator 662 is assigned.
  • the collimator 662 forms that of the
  • Bulb 661 outgoing light to a parallel beam 667.
  • the beam is reflected through a DM D 670 and a plane mirror 671 on the end face of the cable optical fibers 152.
  • the DMD 670 consists of a large number of micromirrors, which are arranged in a rectangular grid and can be tilted individually by means of controllable actuators. In this case, the DMD is aligned so that the micromirrors in the ground state reflect the beam 667 in the direction of the mirror 671.
  • a control device 668 is set up to control individual micromirrors of the DMD 670 in such a way that they reflect the radiation beam 667 onto the absorber 672 instead of onto the mirror 671. This is shown for a partial beam 673. The light of the partial beam 673 is thus masked out of the beam 667, and a cable optical fiber 152 arranged in the corresponding position is not illuminated.
  • the light source 603 shown in Figure 4 preferably operates with a position grid, as shown in Figure 3a.
  • the light source 603 has the advantage that multiple positions of the position grid can be illuminated in parallel. A fast process of a light beam is therefore not required.
  • the bulb 661 does not have to be switched on and off at a high clock rate.
  • the information as to which micromirrors of the DMD must be deflected is in turn stored in a memory 669.
  • FIG. 5 shows a further embodiment of an endoscopy system with an endoscope 701, a light guide cable 702 and a light source 703.
  • the endoscope has a changeable viewing direction, wherein the viewing direction indicated by the arrow 780 can be pivoted along the double arrow 781.
  • extended structures S ' can be considered particularly well without having to move the entire endoscope 701.
  • the imaging elements of the endoscope 701 are not shown here for reasons of clarity.
  • the endoscope optical fibers 717 laid in the endoscope 701 are at the distal end of the endoscope 701
  • Endoscope 701 in three sub-bundles 717 ', 717 ", 717"' divided into different
  • Directions are aligned.
  • illumination light is mainly required only from one of the sub-beams 717 ', 717 ", 717"'.
  • the orientation of the viewing direction is transmitted from the endoscope 701 to the control device 768 of the light source 703.
  • information about the emission direction of the endoscope optical fiber 717 coupled to the corresponding cable optical fiber 752 is stored for each position of the position grid in addition to the information about the coupling or the coupling efficiency of the cable optical fiber 752 located at the position in question ,
  • the control device 768 can thus control the lighting means 761 and the micromotors 765, 766 of the pivoting mirrors 673, 764 so that only such cable optical fibers are illuminated, which are coupled with endoscope optical fibers, which are aligned in the desired emission direction.
  • the information to be stored in the memory is usually fixed only after an endoscopy system is ready for use.
  • the endoscope of the endoscopy system is aligned with a reference object, which may be e.g. can act around a calibration card.
  • a reference object which may be e.g. can act around a calibration card.
  • Position grid are illuminated by the light source and determines the change in the image brightness of the image taken by the endoscope.
  • the image brightness determined upon illumination of a position is used as a measure of the coupling efficiency of a cable optical fiber arranged at the position in question with an endoscope optical fiber and stored to the respective position in the memory. It is also possible to illuminate each position several times and to use the average value of the determined image brightnesses.
  • the location of the maximum brightness in the image is determined in addition to the absolute image brightness and stored in memory as a measure of the emission direction. If the endoscopy system includes an endoscope with an adjustable viewing direction, the determination may need to be performed for different set directions of sight.

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  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Endoscopes (AREA)

Abstract

L'invention concerne un système endoscopique comprenant un endoscope, une source lumineuse et un câble à fibres optiques reliant la source lumineuse à l'endoscope, ainsi qu'une source lumineuse correspondante, l'endoscope comprenant au moins un faisceau de fibres optiques d'endoscope et ledit câble comprenant au moins un faisceau de fibres optiques de câble, un point de couplage de sources lumineuse étant prévu, auquel la lumière de la source lumineuse est injectée dans le ou les faisceaux de fibres optiques de câble et un point de couplage d'endoscope étant prévu, auquel la lumière de la source lumineuse issue du ou des faisceaux de fibres optiques de câble est injectée dans le ou les faisceaux de fibres optiques d'endoscope. Le système endoscopique et la source lumineuse ont été perfectionnés comme suit: la source lumineuse est conçue pour éclairer sélectivement les fibres optiques de câble individuelles ou les groupes de fibres optiques de câble au niveau du point de couplage de la source lumineuse, et le dispositif de commande est associé à la source lumineuse, ladite source lumineuse pouvant être commandée de manière à éclairer uniquement ou principalement les fibres optiques de câble qui sont couplées aux fibres optiques d'endoscope au niveau du point de couplage de l'endoscope.
EP17805117.3A 2016-12-16 2017-11-08 Système endoscopique et source lumineuse d'un système endoscopique Withdrawn EP3515283A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016124730.8A DE102016124730A1 (de) 2016-12-16 2016-12-16 Endoskopiesystem und Lichtquelle eines Endoskopiesystems
PCT/EP2017/078617 WO2018108394A1 (fr) 2016-12-16 2017-11-08 Système endoscopique et source lumineuse d'un système endoscopique

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EP3515283A1 true EP3515283A1 (fr) 2019-07-31

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EP17805117.3A Withdrawn EP3515283A1 (fr) 2016-12-16 2017-11-08 Système endoscopique et source lumineuse d'un système endoscopique

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US (1) US11213193B2 (fr)
EP (1) EP3515283A1 (fr)
JP (1) JP6781842B2 (fr)
CN (1) CN109982627A (fr)
DE (1) DE102016124730A1 (fr)
WO (1) WO2018108394A1 (fr)

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DE102020104574A1 (de) 2020-02-21 2021-08-26 Olympus Winter & Ibe Gmbh Medizinisches System, Medien- und/oder Energiequelle, und Trokar

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743431B4 (de) 1997-10-01 2011-02-17 Karl Storz Gmbh & Co. Kg Endoskop mit Verbundfenster
JP3717719B2 (ja) * 1999-08-23 2005-11-16 オリンパス株式会社 内視鏡光源装置
US6464633B1 (en) * 1999-08-23 2002-10-15 Olympus Optical Co., Ltd. Light source device for endoscope using DMD
DE19947812C2 (de) * 1999-10-05 2001-11-22 Winter & Ibe Olympus Beleuchtungseinrichtung für Endoskope mit Helligkeitssteuerung
US6663560B2 (en) * 1999-12-17 2003-12-16 Digital Optical Imaging Corporation Methods and apparatus for imaging using a light guide bundle and a spatial light modulator
JP4610713B2 (ja) * 2000-10-13 2011-01-12 オリンパス株式会社 内視鏡装置
DE10242607B4 (de) * 2002-09-12 2005-04-21 Olympus Winter & Ibe Gmbh Endoskop mit Lichtleiterbündel
CN101347324B (zh) * 2007-07-17 2012-05-30 鸿富锦精密工业(深圳)有限公司 内窥镜装置
BRPI1011413B1 (pt) * 2009-05-05 2021-09-14 Lumito Ab Sistema, método e marcador luminescente para geração de imagem luminescente difusa melhorada ou tomografia em meio de dispersão
DE102010013307B4 (de) * 2010-03-29 2022-12-15 Karl Storz Se & Co. Kg Lichtquelleneinrichtung für endoskopische oder exoskopische Anwendungen
JP2011224042A (ja) * 2010-04-15 2011-11-10 Fujifilm Corp 光源装置及びこれを用いた内視鏡装置
JP2011224043A (ja) * 2010-04-15 2011-11-10 Fujifilm Corp 光源装置及びこれを用いた内視鏡装置
TWI414817B (zh) * 2010-07-23 2013-11-11 Univ Nat Taipei Technology 線型彩色共焦顯微系統
DE102011119608B4 (de) * 2011-11-29 2021-07-29 Karl Storz Se & Co. Kg Vorrichtung und Verfahren zur endoskopischen 3D-Datenerfassung
EP2740399A4 (fr) * 2012-03-22 2015-10-14 Olympus Medical Systems Corp Sonde de mesure, appareil de mesure bio-optique et système de mesure bio-optique
CN103997944B (zh) * 2012-09-03 2016-04-13 奥林巴斯株式会社 扫描型内窥镜系统
DE102013113511A1 (de) * 2013-12-05 2015-06-11 Karl Storz Gmbh & Co. Kg Endoskop, Exoskop oder Mikroskop und Verfahren zur Beleuchtung eines Betätigungsbereiches eines Endoskops, Exoskops oder Mikroskops

Also Published As

Publication number Publication date
US11213193B2 (en) 2022-01-04
JP6781842B2 (ja) 2020-11-04
US20200060533A1 (en) 2020-02-27
JP2020500657A (ja) 2020-01-16
CN109982627A (zh) 2019-07-05
DE102016124730A1 (de) 2018-06-21
WO2018108394A1 (fr) 2018-06-21

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