WO2019017180A1 - Endoscope et système d'imagerie - Google Patents

Endoscope et système d'imagerie Download PDF

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Publication number
WO2019017180A1
WO2019017180A1 PCT/JP2018/024729 JP2018024729W WO2019017180A1 WO 2019017180 A1 WO2019017180 A1 WO 2019017180A1 JP 2018024729 W JP2018024729 W JP 2018024729W WO 2019017180 A1 WO2019017180 A1 WO 2019017180A1
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WO
WIPO (PCT)
Prior art keywords
sub
light
endoscope
illumination
unit
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Application number
PCT/JP2018/024729
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English (en)
Japanese (ja)
Inventor
忠彦 佐藤
仁志 青木
森　淳
Original Assignee
シャープ株式会社
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Publication of WO2019017180A1 publication Critical patent/WO2019017180A1/fr

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    • 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
    • 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
    • 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
    • A61B1/313—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 for introducing through surgical openings, e.g. laparoscopes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/26—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides

Definitions

  • the present invention relates to an endoscope and an imaging system.
  • Endoscopic surgery is a minimally invasive surgery that performs examinations and treatment procedures without opening the patient.
  • a treatment tool such as forceps and an endoscope are separately introduced into a patient's body cavity, and the operator observes an image of the tip portion of the treatment tool inserted in the body cavity. It is caught in the visual field, and the treatment operation is performed while observing the treatment condition of the affected part by the treatment instrument by the endoscope.
  • a treatment tool and an endoscope are introduced into a body cavity through a cylinder punctured in a body wall (for example, an abdominal wall) in the abdomen or the like of a patient.
  • Patent Document 1 discloses a configuration in which an optical device for imaging is provided on the distal end surface of the introducing unit, and a light emitting device is provided on the side surface of the introducing unit.
  • an imaging device capable of widely grasping the state outside the work area (for example, movement of the treatment tool outside the work area, bleeding state, residual state of residue such as gauze) may be used together with the endoscope.
  • Japanese Patent Publication Japanese Patent Application Laid-Open No. 2015-77400 (Apr. 23, 2015)" Japanese Patent No. 4472727
  • illumination light is irradiated into a body cavity from the side surface of the endoscope, and the imaging range (field of view of the endoscope) is indirectly illuminated using reflected light or scattered light from the body wall.
  • the imaging range field of view of the endoscope
  • light directly entering the imaging range causes light and dark within the imaging range, and a difference between the light and dark causes a region difficult to observe or halation occurs.
  • the main illumination unit in which the majority of the light quantity to be irradiated is directed into the imaging range of the imaging mechanism, and the light quantity to be irradiated to the introducing part introduced into the object And a sub-illumination unit whose majority is directed outside the imaging range of the imaging mechanism, and a light quantity emitted from the sub-illumination unit is smaller than a light quantity emitted from the main illumination unit.
  • the light quantity from the sub illumination part By making the light quantity from the sub illumination part smaller than the light quantity from the main illumination part, the superimposed light by the sub illumination part and the main illumination part in the imaging range is suppressed. As a result, the brightness within the imaging range is reduced, and the image quality of the endoscopic image is enhanced.
  • the temperature rise due to heat generation can be suppressed.
  • the interior of the subject can be entirely illuminated by the sub illumination unit, when a sub camera having a different imaging range from the endoscope is used, the difference in light and dark within the imaging region of the sub camera is suppressed. Has the advantage that halation is unlikely to occur in the image.
  • (A) is a perspective view of the endoscope concerning this embodiment
  • (b) is a schematic diagram of the endoscope system containing the endoscope of (a). It is a perspective view explaining illumination of an endoscope.
  • (A) is a perspective view which shows the modification of the endoscope concerning this embodiment
  • (b) is a schematic plan view of the endoscope system containing the endoscope of (a)
  • (c) These are perspective views which show the further modification of the endoscope concerning this embodiment.
  • FIG. (A) is sectional drawing which shows the endoscope concerning Example 1
  • (b) * (c) * (d) is sectional drawing which shows the modification of the sub illumination part concerning Example 1
  • (E) * (f) * (g) * (h) is a perspective view which shows the modification of the introducing
  • FIG. (A) is sectional drawing of the endoscope concerning Example 2
  • (b) * (d) * (f) is a perspective view which shows the modification of the introducing
  • (c) (E) ⁇ (g) is a cross-sectional view showing a modification of the sub illumination unit according to the second embodiment
  • (h) is a cross-sectional view showing a modification of the introduction unit according to the second embodiment.
  • FIG. 16 is a perspective view showing the configuration of an endoscope 4 of Example 3;
  • (A) is sectional drawing of the endoscope concerning Example 4
  • (b) is a perspective view which shows the introductory part concerning Example 4
  • (c) shows the sub illumination part concerning Example 4
  • FIG. 16 is a perspective view showing switching of side illumination of the endoscope according to the fourth embodiment. They are the perspective view (a) and sectional drawing (b)-(h) which show the structural example of Example 5.
  • FIG. (A) is a schematic diagram which shows the endoscope system concerning Example 6
  • (b) is a schematic diagram which shows another example of the endoscope system concerning Example 5.
  • FIG. are a perspective view (a) and a top view (b) which show the modification of the endoscope shown to FIGS. 1-3.
  • FIG. 1 is a perspective view of the endoscope according to the present embodiment
  • (b) of FIG. 1 is a schematic view of an endoscope system including the endoscope of (a) of FIG. .
  • the endoscope 4 includes an introducing unit 11 and an operation unit 18 which are introduced into the inside of a subject.
  • the introducing portion 11 is a long and thin cylindrical shape, the observation window 12 and the main illumination portion 13 surrounding the same are provided on the tip end face EF of the introducing portion 11, and the side surface of the introducing portion 11 is a cylindrical sub-illumination
  • the portion 14 is provided adjacent to the end face EF.
  • the light emitted from the main illumination unit 13 and reflected by the object to be imaged enters the imaging mechanism of the endoscope 4.
  • the imaging mechanism is configured to include the observation window 12, the light guiding mechanism, and the imaging device (both not shown), and the light passing through the observation window 12 (reflected light at the imaged object) is It is led to the imaging device.
  • the imaging system 10 includes an endoscope 4, an endoscope cable 5, an endoscope control unit 6 (endoscope control device 6, a sub camera 7, a camera cable 8, a camera control unit 9 (camera control device), and a monitor It has MT.
  • the endoscope control unit 6 sends the light from the light source provided inside to the main illumination unit 13 and the sub illumination unit 14 of the endoscope 4 via the endoscope cable 5. At the same time, the endoscope control unit 6 processes the video data sent from the endoscope 4 via the endoscope cable 5 and causes the monitor MT to display an endoscopic video (narrow range video).
  • the sub camera 7 is fixed near the body wall, has an imaging range different from that of the endoscope 4, and acquires an image different from that of the endoscope.
  • the imaging range of the sub camera 7 may include the imaging range of the endoscope 4.
  • the camera control unit 9 processes video data sent from the sub camera 7 via the camera cable 8 and displays a wide area video on the monitor MT.
  • the tubular puncture tools 2a, 2b and 2c are punctured in the subject, and the sub camera 7 passes through the inside of the tubular puncture tool 2a to the abdominal cavity Bn (the inside of the subject ) And image a wide area including the affected area Ja and Jb.
  • the endoscope 4 is introduced into the abdominal cavity Bn through the inside of the tubular puncture tool 2b, and images a narrow area including the affected area Ja.
  • the operator treats the affected area Ja using forceps 3 or the like passed through the tubular puncture tool 2c while viewing the endoscopic image and the wide-area image Vk of the monitor MT.
  • FIG. 2 is a perspective view for explaining illumination of the endoscope.
  • the ring-shaped main illumination unit 13 mainly irradiates light to the imaging range FA of the endoscope 4, and the cylindrical sub illumination unit 14 mainly applies the endoscope 4.
  • Light is emitted to the FN outside the imaging range of. That is, the majority of the amount of light emitted by the sub illumination unit 14 is directed to the FN outside the imaging range of the endoscope 4.
  • the amount of light emitted from the sub illumination portion 14 is smaller than the amount of light emitted from the main illumination portion 13 and, as shown in FIG. 2B, the sub illumination portion 14 has a perpendicular line PL passing through its center.
  • the amount of light emitted to the forward FD on the tip end face EF side is larger than the amount of light emitted to the rear BD.
  • the light quantity of the sub illumination unit 14 is smaller than the light quantity of the main illumination unit 13, and the majority of the light quantity emitted from the sub illumination unit 14 is the imaging range of the endoscope 4. It is directed to the outside FN. Therefore, the brightness and darkness of the FA within the imaging range of the endoscope is suppressed, and the image quality of the endoscopic image is enhanced.
  • the abdominal cavity Bn can be generally illuminated by the sub illumination unit 14, there is an advantage that halation is unlikely to occur in the wide area image Vk by the sub camera 7.
  • the sub illumination unit 14 in the configuration in which the sub illumination unit 14 is not provided, there is a problem that the abdominal cavity Bn is entirely dark and halation occurs in the region of the sub camera 7 where the main illumination unit 13 receives light.
  • the light from the sub-illumination unit 14 is directly transmitted to the sub-camera 7 because the light quantity emitted to the rear by the sub-illumination unit 14 is smaller than the light amount emitted forward. It is possible to prevent incident light).
  • FIG. 3 is a perspective view showing a modified example of the endoscope according to the present embodiment
  • (b) is a schematic plan view of an endoscope system including the endoscope of (a)
  • (C) is a perspective view which shows the further modification of the endoscope concerning this embodiment.
  • a plurality of sub illumination units 14 and 15 may be provided in the introduction unit 11 of the endoscope 4.
  • the sub illumination unit 15 is configured to be farther from the tip end surface EF than the sub illumination unit 14. In this way, even when the endoscope 4 is deeply introduced as shown in FIG. 3B and the sub illumination unit 14 is hidden in the affected part Ja, the outside of the imaging range of the endoscope is illuminated by the sub illumination unit 15, A wide range of high quality images can be obtained.
  • (c) of FIG. 3 it is also possible to provide one cylindrical sub illumination portion 14 having a length of half or more of the introduction portion 11.
  • FIG. 11 is a perspective view (a) and a top view (b) showing a modified example of the endoscope shown in FIGS.
  • the sub illumination units 14 and 15 can be provided in a side-viewing endoscope.
  • an observation window 12 for extracting light from the imaging range FA of the endoscope 4 and the main illumination units 13a and 13b are provided on one side surface of the introduction unit 11.
  • a sub illumination unit 14 that illuminates the FN outside the imaging range of the endoscope 4 is provided on the other side surface of the introduction unit 11.
  • a sub illumination unit 15 is provided on the distal end surface of the introduction unit 11 to illuminate the outside FN of the imaging range of the endoscope 4.
  • the amount of light emitted from the sub illumination portion 14 is smaller than the amount of light (total amount of light) emitted from the main illumination portions 13a and 13b, and the amount of light emitted from the sub illumination portion 15 is emitted from the main illumination portions 13a and 13b Light amount (total light amount).
  • a sub-illumination unit that illuminates the FN outside the imaging range of the endoscope 4 can be provided in the oblique-viewing endoscope.
  • the sub illumination unit is integrated with the housing of the introduction unit 11, but is not limited thereto.
  • An illumination attachment including one or more sub illumination units may be attached to the endoscope body.
  • the endoscope main body can be made reusable and only the illumination attachment can be disposable.
  • FIG. 4A is a cross-sectional view of the endoscope according to the first embodiment.
  • (B) * (c) * (d) of FIG. 4 is sectional drawing which shows the modification of the sub illumination part concerning Example 1.
  • FIG. (E) * (f) * (g) * (h) of FIG. 4 is a perspective view which shows the modification of the introducing
  • the sub illumination unit 14 includes a plurality of light emitting units 14 a and 14 b equidistant from the distal end surface EF.
  • the light from the light source provided outside the endoscope is guided to the light emitting unit (light emitting window) 14 a through the light guide material Ga (for example, an optical fiber) and the mirror Mr.
  • the light emitting unit (light emission window) 14 b is guided to the light emitting unit (light emission window) 14 b through the light guide material Gb and the mirror Mr, and is guided to the main illumination unit (lighting window) 13 through the light guide material Gs.
  • the light passing through the observation window 12 (reflected light at the imaged object) is guided to the imaging element by the light guide Lw (for example, an optical fiber).
  • the mirror Mr changes the direction of the light emitted from the light guide materials Ga and Gb.
  • the light guides Ga, Gb, Gs and the light guide Lw are accommodated in the endoscope cable 5.
  • the main illumination unit 13 mainly irradiates light within the imaging range of the endoscope 4, and the sub illumination units 14 (light emitting units 14 a and 14 b) mainly irradiate light outside the imaging range of the endoscope 4. That is, the majority of the amount of light emitted from the sub illumination unit 14 (light emitting units 14 a and 14 b) is directed outside the imaging range of the endoscope 4.
  • the amount of light emitted from the sub-illumination unit 14 (the light emission units 14a and 14b) is smaller than the amount of light emitted from the main illumination unit 13.
  • the sub-illumination unit 14 The amount of light irradiated forward is larger than the amount of light irradiated backward.
  • Such a configuration is realized by, for example, the design of the light guide amount by the light guide materials Ga, Gb, Gs, the angle of the mirror Mr, the light transmittance of the light emission window, and the like.
  • the two sub-illumination units 14 are disposed at two equal intervals from the front end surface EF of the two light emission units 14 a and 14 b arranged to face the circumferential surface of the introduction unit 11.
  • the light emitting window may be configured.
  • the sub illumination unit 14 is configured by three light emitting units 14a, 14b and 14c arranged at equal intervals (arcs corresponding to 120 degrees) on the peripheral surface of the introduction unit 11. You may As shown in (d) of FIG. 4, the four sub-illumination units 14 are arranged on the circumferential surface of the introduction unit 11 at equal intervals (arcs corresponding to 90 degrees).
  • a ring-shaped light diffusion material Df corresponding to the sub illumination portion (illumination window) 14 is provided, and the light diffusion material Df is provided via the light guide materials Ga and Gb. It can also guide light.
  • a light diffusing material DF can be provided to guide light to the light diffusing material DF via the light guiding materials Gb and Gs.
  • the angle of the mirror Mr may be made variable by an actuator or the like, and the light irradiation characteristic of the sub illumination unit 14 may be set.
  • a prism may be provided instead of the mirror Mr, or a light guide Lw made of a relay lens or the like may be provided.
  • an air / water supply channel, a medical treatment instrument insertion hole, or the like may be provided inside the introduction unit 11.
  • FIG. 5A is a cross-sectional view of the endoscope according to the second embodiment.
  • (B) * (d) * (f) of FIG. 5 is a perspective view which shows the modification of the introducing
  • FIG. (C) * (e) * (g) of FIG. 5 is sectional drawing which shows the modification of the sub illumination part concerning Example 2.
  • FIG. (H) of FIG. 5 is a cross-sectional view showing a modification of the lead-in portion according to the second embodiment.
  • the sub illumination unit 14 includes a plurality of light emitting units 14 a and 14 b equidistant from the distal end surface EF.
  • a light emitting element Ea connected to the power cable Pa is provided inside the light emitting portion (light emitting window) 14a.
  • a light emitting element Eb connected to the power cable Pb is provided inside the light emitting portion (light emitting window) 14b.
  • a light emitting element E1 connected to the power cable P1 is provided inside the main lighting unit (lighting window) 13.
  • the light passing through the observation window 12 (reflected light at the imaged object) is guided to the imaging element by the light guide Lw (for example, an optical fiber).
  • the power cables P1 ⁇ Pa ⁇ Pb and the light guide Lw are housed in the endoscope cable 5.
  • an LED (light emitting diode) element can be used, for example.
  • the main illumination unit 13 mainly irradiates light within the imaging range of the endoscope 4, and the sub illumination units 14 (light emitting units 14 a and 14 b) mainly irradiate light outside the imaging range of the endoscope 4. That is, the majority of the amount of light emitted from the sub illumination unit 14 (light emitting units 14 a and 14 b) is directed outside the imaging range of the endoscope 4.
  • the amount of light emitted from the sub-illumination unit 14 (the light emission units 14a and 14b) is smaller than the amount of light emitted from the main illumination unit 13.
  • the sub-illumination unit 14 The amount of light irradiated forward is larger than the amount of light irradiated backward.
  • Such a configuration is realized, for example, by designing the amount of current of the power cable P1 ⁇ Pa ⁇ Pb, the angle between the axis of the introducing unit 11 and the light emitting surface of the light emitting element, the light transmittance of the light emitting window, and the like.
  • the main lighting unit 13 is configured by four light emitting units (light emitting windows) 13a to 13d disposed so as to surround the observation window 12. It is also good.
  • the sub illumination unit 14 may be configured by four light emitting units (light emitting windows) 14a to 14d arranged at equal intervals (arcs corresponding to 90 degrees) on the circumferential surface of the introducing unit 11. Inside the light emitting units 13a to 13d, light emitting elements connected to the power cables P1 to P4 are provided, and inside the light emitting units 14a to 14d, light emitting elements Ea to Ed connected to the power cables Pa to Pd are provided .
  • the sub illumination unit 13 may be configured of four light emitting units (light emitting windows) 13a to 13d arranged to surround the observation window 12. Further, eight light emitting elements E1 to E8 arranged at equal intervals (arcs corresponding to 90 degrees) are provided inside the ring-shaped sub illumination section 14, and the sub illumination section (illumination window) 14 and the light emitting elements A ring-shaped light diffusion Df may be provided between E1 and E8.
  • light emitting elements connected to the power cables P1 to P4 are provided, and the light emitting elements E1 to E8 inside the sub illumination unit 14 are connected to a common power cable Pe.
  • the ring-shaped portion corresponding to the sub illumination portion (illumination window) 14 and the disk-shaped portion corresponding to the main illumination portion (illumination window) 13 An integrated light diffusing material DF may be provided.
  • the light emitting elements E1 to E8 may be provided at equal intervals inside the ring shaped portion of the light diffusing material DF, and the light emitting elements E9 and E10 may be provided inside the disk shaped portion of the light diffusing material DF.
  • the light emitting elements E1 to E8 are connected to a common power cable Pe, and the light emitting elements E9 to E10 are connected to power cables P5 and P6, respectively.
  • a light guide Lw made of a relay lens or the like may be provided.
  • an air / water supply channel, a medical treatment instrument insertion hole, or the like may be provided inside the introduction unit 11.
  • FIG. 6 is a perspective view showing the configuration of the endoscope 4 of the third embodiment.
  • a sheath 16 (outer sheath) covering the sub-illumination units 14 and 15 is disposed in the introduction unit 11 with the sub-illumination unit 14 close to the end surface EF and the sub-illumination unit 15 separated from the end surface EF.
  • the sheath 16 includes two light shielding portions 16 a and 16 c and a light transmitting portion 16 b sandwiched therebetween, and can slide in the axial direction of the introducing portion 11.
  • the light shielding portion 16 a is located on the tip end face EF side, and the length thereof is equal to the distance between the sub illumination portion 15 and the sub illumination portion 16.
  • the light transmitting portion 16 b is equal to the length of the sub illumination portion 15.
  • illumination is performed only by the sub illumination unit 14 as shown in (b) of FIG. 6 so that the image of the endoscope 4 and the image of the sub camera 7 (see FIG. 1) are optimized.
  • FIG. 6C it is possible to use the illumination by only the sub illumination unit 15.
  • the sub camera 7 is not used, it is also possible to turn off the side illumination as shown in FIG.
  • the sub-illumination unit 14 and the sub-illumination unit 15 are selectively functioned by the slide of the sheath 16, but the sub-illumination unit 14 and the sub-illumination unit are selected depending on the presence or absence of power supply 15 can be made to function selectively.
  • the sub illumination portion may be covered with a light transmitting member, and the movable light shielding member and the light transmitting member may be overlapped to change the irradiation light amount of the sub illumination portion.
  • the sub illumination section may be covered with a light transmittance control member (for example, a liquid crystal panel), and light transmittance may be changed by voltage control on the light transmittance control member to switch between light shielding and light transmitting.
  • Example 4 (A) of FIG. 7 is a cross-sectional view of the endoscope according to the fourth embodiment, (b) of FIG. 5 is a perspective view showing the introducing portion according to the fourth embodiment, and (c) of FIG. 10 is a cross-sectional view showing a sub illumination unit according to Example 4.
  • FIG. FIG. 8 is a perspective view showing switching of side illumination of the endoscope according to the fourth embodiment.
  • the sub illumination unit 14 has an equal interval (arcs corresponding to 90 degrees) on the circumferential surface of the introduction unit 11.
  • the four light emitting units (light emitting windows equidistant from the tip end face EF) 14a to 14d are disposed. Inside the light emitting unit 14a, a light diffusing material Df1 and a light emitting element Ea connected to the power cable Pa are provided. A light diffusing material Df2 and a light emitting element Eb connected to the power cable Pb are provided inside the light emitting portion 14b.
  • a light diffusing material Df3 and a light emitting element Ec connected to the power cable Pc are provided inside the light emitting portion 14c.
  • a light diffusing material Df4 and a light emitting element Ed connected to the power cable Pd are provided inside the light emitting unit 14d.
  • the light diffusion materials Df1 to Df4 are curved.
  • a light emitting element Ee connected to the power cable P1 is provided inside the main lighting unit 13.
  • the switch circuit SC and the input unit Nk connected thereto are provided in the operation unit 18, and the power cables Pa to Pd are connected to the endoscope control unit 6 via the switch circuit SC.
  • the input unit Nk is provided with switches Sa to Sd for switching between light emission and non-light emission of the light emitting units 14a to 14d.
  • switches Sa to Sd for switching between light emission and non-light emission of the light emitting units 14a to 14d.
  • the user can turn off the light emitting unit 14c by operating the switch Sc (see FIG. 5 (b)).
  • the operation unit 18 may be provided with switches for simultaneously turning on or off the light emitting units 14 a to 14 d of the sub illumination unit 14.
  • the switch circuit SC By providing the switch circuit SC with a current adjusting function, the light amounts of the light emitting units 14a to 14d may be set by operating the switches Sa to Sd.
  • the sub illumination unit can be controlled in accordance with the relationship with the sub camera 7, the quality of a wide area image can be enhanced and unnecessary heat generation in the endoscope 4 can be eliminated.
  • the present invention is not limited to this.
  • One or both of the input unit Nk and the switch circuit SC may be provided in the endoscope control unit 6.
  • the input unit Nk is provided in the operation unit 18, the switch circuit SC is provided in the endoscope control unit 6, the input unit Nk is operated, and the light amount of each light emitting unit via the endoscope control unit 6 May be set.
  • Example 5 Even in the configuration in which light is transmitted to the sub illumination unit using a plurality of light guiding members as in the first embodiment, the light amount adjustment of each light emitting unit can be enabled.
  • the sub illumination unit is configured by four light emitting units, for example, as illustrated in (a) of FIG. 9, exchangeable between the light guide members Ga to Gd transmitting light to the four light emitting units and the light source LS
  • the optical filter panel FP may be mounted.
  • the optical filter panel FP includes four filters Fa to Fd, and the light blocking pattern is different for each of the optical filter panels FP.
  • the light guide members Gc and Gd are attached when the optical filter FP is mounted.
  • the light of the light source LS is supplied, the light of the light source LS is not supplied to the light guide materials Ga and Gb.
  • a rotary adapter RA in which a plurality of optical filter panels FP are arranged concentrically between light sources Ga to Gd for transmitting light to four light emitting units and a light source LS (see (b) in FIG. 9). ) May be provided.
  • the light blocking patterns of the plurality of optical filter panels FP are different from each other, and the rotation adapter RA is rotated to select the light filter panel FP having a desired light blocking pattern, thereby the light amounts of the four light emitting units constituting the sub illumination unit Can be set. In this way, it is possible to save time and labor for finding and mounting the required optical filter panel from among the plurality of optical filter panels FP, and it is possible to switch the light shielding pattern simply by rotating the rotary adapter RA.
  • An optical filter panel FP (see (c) to (h) in FIG. 9) including a liquid crystal panel is disposed between the light guide members Ga to Gd transmitting light to the four light emitting units and the light source LS. You may provide.
  • the light transmittances of the areas Aa to Ad of the optical filter panel FP corresponding to the light guide materials Ga to Gd it is possible to set the light quantities of the four light emitting parts constituting the sub illumination part .
  • the region Aa ⁇ Ac ⁇ Ad is totally transmitted, and the region Ab is shaded.
  • the area Aa is shielded, the area Ab is semi-transparent, and Ac ⁇ Ad is totally transmitted.
  • FIG. 10 is a schematic view showing an endoscope system according to a sixth embodiment
  • (b) of FIG. 10 is a schematic view showing another example of the endoscope system according to the fifth embodiment.
  • the endoscope control unit 6 and the sub camera control unit 9 are connected, and the camera control unit 9 indicates to the endoscope control unit 6 that the sub camera 7 is in operation. While the signal is being sent, the endoscope control unit 6 turns on the sub illumination unit 14 of the endoscope 4. On the other hand, the configuration in which the endoscope control unit 6 turns off the sub illumination unit 14 of the endoscope 4 is also possible during the period in which the signal is not sent.
  • the endoscope control unit 6 and the sub camera control unit 9 can be used as a common control unit.
  • the sub-camera 7 and the sub-illumination section (emission) are provided by providing the infrared light emitting element Ei in the sub-camera 7 and providing the infrared detection element Ri in the endoscope 4 (for example, the introducing section).
  • the endoscope control unit 6 may be configured to recognize the positional relationship with the units 14a and 14b). In this case, for example, in the case of (b) of FIG. 10, the endoscope control unit 6 turns on the light emitting unit 14a not facing the sub camera 7 and the light emitting unit facing the sub camera 7 14b can be turned off.
  • the endoscope 4 may be provided with the infrared emitting element Ei, and the sub camera 7 may be provided with the infrared detecting element Ri.
  • the means for detecting the positional relationship between the endoscope 4 and the sub camera 7 is not limited to infrared light.
  • radio waves, sound waves, magnetism, etc. may be used, and a gravity sensor, an angle sensor, etc. are provided with sensors for recognizing their own position and state, and cooperation is made by wireless communication or wired communication via a control device. You do not mind.
  • the endoscope 4 or the sub camera 7 may not be configured to directly detect the other position.
  • the position may be detected indirectly by causing the endoscope 4 or the sub camera 7 to detect the position, the inclination, and the like of the tubular puncture tool on which the other is installed.
  • Aspect 5 The endoscope according to aspect 4, for example, wherein the light amounts of the plurality of light emitting units can be set individually.
  • An endoscope for example, according to any one of aspects 1 to 5, comprising a plurality of sub illumination units, one of which can be selectively functioned as illumination.
  • Aspect 7 For example, an imaging system including the endoscope according to any one of the first to sixth aspects, an endoscope control unit that controls the endoscope, and a sub-camera whose imaging range is different from that of the endoscope.
  • Aspect 8 The imaging system according to the seventh aspect, for example, wherein the sub illumination unit emits light to an imaging range of the sub camera.
  • the imaging system according to Aspect 8 for example, wherein the endoscope control unit turns on the sub illumination unit when the sub camera is in operation, and turns off the sub illumination unit when the sub camera is not in operation.
  • the sub illumination unit includes a plurality of light emitting units disposed along the outer periphery of the introduction unit, The imaging system according to an eighth aspect, for example, wherein the endoscope control unit sets the light amount of each light emitting unit according to the positional relationship between the sub illumination unit and the sub camera.

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  • Optics & Photonics (AREA)
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  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract

En vue de réduire le contraste dans une plage d'imagerie d'un endoscope, la présente invention comporte, au niveau d'une partie d'introduction (11) à introduire dans un sujet : au moins une partie (12) d'un mécanisme d'imagerie ; une unité d'éclairage principale (13) qui dirige plus de la moitié d'une quantité de lumière émise vers l'intérieur d'une plage d'imagerie du mécanisme d'imagerie ; et une sous-unité d'éclairage (14) qui dirige plus de la moitié d'une quantité de lumière émise vers l'extérieur de la plage d'imagerie du mécanisme d'imagerie, la quantité de lumière émise par la sous-unité d'éclairage étant inférieure à la quantité de lumière émise par l'unité d'éclairage principale.
PCT/JP2018/024729 2017-07-18 2018-06-28 Endoscope et système d'imagerie WO2019017180A1 (fr)

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JP2017-139489 2017-07-18
JP2017139489 2017-07-18

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WO2019017180A1 true WO2019017180A1 (fr) 2019-01-24

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060178558A1 (en) * 2005-02-07 2006-08-10 Mitsuo Obata Endoscope system
JP2008183408A (ja) * 2007-01-30 2008-08-14 Fraunhofer Ges 内視鏡先端の撮像手段用照明装置および照明装置の操作方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060178558A1 (en) * 2005-02-07 2006-08-10 Mitsuo Obata Endoscope system
JP2008183408A (ja) * 2007-01-30 2008-08-14 Fraunhofer Ges 内視鏡先端の撮像手段用照明装置および照明装置の操作方法

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