WO2020202883A1 - 内視鏡、内視鏡装置 - Google Patents
内視鏡、内視鏡装置 Download PDFInfo
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- WO2020202883A1 WO2020202883A1 PCT/JP2020/006828 JP2020006828W WO2020202883A1 WO 2020202883 A1 WO2020202883 A1 WO 2020202883A1 JP 2020006828 W JP2020006828 W JP 2020006828W WO 2020202883 A1 WO2020202883 A1 WO 2020202883A1
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- Prior art keywords
- optical system
- light
- measurement
- measurement auxiliary
- optical
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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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00096—Optical elements
-
- 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
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
- A61B1/000094—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope extracting biological structures
-
- 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
- A61B1/00002—Operational features of endoscopes
- A61B1/00043—Operational features of endoscopes provided with output arrangements
- A61B1/00045—Display arrangement
-
- 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
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00097—Sensors
-
- 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
- A61B1/045—Control thereof
-
- 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
- A61B1/0661—Endoscope light sources
- A61B1/0676—Endoscope light sources at distal tip of an endoscope
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; Determining position of diagnostic devices within or on the body of the patient
- A61B5/061—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body
- A61B5/064—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body using markers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; Determining position of diagnostic devices within or on the body of the patient
- A61B5/065—Determining position of the probe employing exclusively positioning means located on or in the probe, e.g. using position sensors arranged on the probe
-
- 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
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
-
- 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
- G02B23/2407—Optical details
- G02B23/2461—Illumination
-
- 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 endoscope device.
- the distance to the observation object is acquired.
- a laser beam whose optical axis is tilted toward the optical axis of the imaging optical system is irradiated as measurement auxiliary light from a measurement auxiliary optical optical system provided apart from the imaging optical system.
- the distance to the observation object is acquired based on the position of the spot of the measurement auxiliary light reflected in the image obtained by the imaging optical system.
- the present invention has been made in view of the above background, and an object of the present invention is to provide an endoscope and an endoscope device having no unevenness at the tip of the insertion portion of the endoscope.
- the endoscope of the present invention has a first hole portion and a second hole portion provided at the tip of the insertion portion, an imaging optical system housed in the first hole portion, and a second hole portion housed in the second hole portion. Insertion of a measurement auxiliary optical optical system that emits measurement auxiliary light whose optical axis is tilted with respect to the optical axis of the imaging optical system from the light emitting surface arranged inside the hole toward the optical axis of the imaging optical system. It has a flat surface flush with the tip of the portion, and includes a transparent member inserted into the optical path of the measurement auxiliary light emitted from the light emitting slope.
- the transparent member preferably functions as a lid for closing the second hole.
- the transparent member has a close contact surface that is in close contact with the light emitting slope, and it is preferable that the transparent member is airtight between the close contact surface and the flat surface in the optical path of the measurement auxiliary light.
- the transparent member includes an optical member and the contact surface is formed on the optical member.
- the transparent member includes a transparent loading material loaded between the contact surface and the flat surface, and the contact surface is formed by the loading material in close contact with the light emitting slope.
- the medium on the measurement auxiliary optical system side with the light output slope sandwiched has a smaller optical refractive index than the medium on the transparent member side.
- optical axis of the imaging optical system and the optical axis of the measurement auxiliary optical optical system intersect.
- the distance from the tip of the insertion portion to the intersection of the optical axis of the imaging optical system and the optical axis of the measurement auxiliary optical optical system is preferably in the range of 8 mm or more and 12 mm or less.
- the measurement auxiliary light is preferably linear parallel light.
- the endoscope device of the present invention is a position for specifying the position of a specific region formed by the measurement auxiliary light from the regions included in the above-mentioned endoscope and the captured image obtained by the imaging optical system. It includes a specific unit and a display control unit that displays a specific image displayed on the captured image on the display unit with a measurement marker set according to the position of the specific area.
- an endoscope and an endoscope device that do not have a problem such as a foreign substance being clogged in an uneven portion at the tip of an insertion portion.
- the endoscope device 10 includes an endoscope 12, a light source device 14, a processor device 16, a monitor 18, and a user interface 19.
- the endoscope 12 is optically connected to the light source device 14 and electrically connected to the processor device 16.
- the processor device 16 is electrically connected to a monitor 18 (display unit) that displays an image.
- the user interface 19 is connected to the processor device 16 and is used for various setting operations for the processor device 16.
- the user interface 19 includes a mouse and the like in addition to the illustrated keyboard.
- the endoscope 12 includes an insertion portion 12a to be inserted into the subject, an operation portion 12b provided at the base end portion of the insertion portion 12a, and a curved portion 12c and a tip portion 12d provided on the tip end side of the insertion portion 12a. have.
- the angle knob 12e of the operating portion 12b By operating the angle knob 12e of the operating portion 12b, the curved portion 12c bends. Along with this bending motion, the tip portion 12d is directed in a desired direction.
- the endoscope 12 has a normal mode and a length measurement mode, and these two modes are switched by a mode changeover switch 13a provided on the operation unit 12b of the endoscope 12.
- the normal mode is a mode in which the observation target is illuminated by the illumination light.
- the length measurement mode illuminates the observation target with illumination light or measurement auxiliary light, and is used for measuring the size of the observation target on the captured image obtained by imaging the observation target (FIGS. 11 to 11 to 11). (See FIG. 13) is displayed.
- the measurement auxiliary light is light used for measuring a subject.
- the endoscope 12 may be provided with a special light mode for illuminating the subject with special light used for emphasizing a specific portion as illumination light.
- the operation unit 12b of the endoscope 12 is provided with a freeze switch 13b for operating a still image acquisition instruction for instructing acquisition of a still image of an captured image.
- a freeze switch 13b for operating a still image acquisition instruction for instructing acquisition of a still image of an captured image.
- the screen of the monitor 18 freezes and displays an alert sound (for example, "pee") to the effect that a still image is acquired.
- the still image of the captured image obtained before and after the operation timing of the freeze switch 13b is stored in the still image storage unit 42 (see FIG. 3) in the processor device 16 (see FIG. 3).
- the measurement marker may be saved together with the still image of the captured image.
- the still image storage unit 42 is a storage unit such as a hard disk or a USB (Universal Serial Bus) memory.
- the processor device 16 can be connected to the network, the still image of the captured image is stored in the still image storage server (not shown) connected to the network in place of or in addition to the still image storage unit 42. You may.
- a still image acquisition instruction may be given using an operating device other than the freeze switch 13b.
- a foot pedal may be connected to the processor device 16 to give a still image acquisition instruction when the user operates the foot pedal (not shown) with his / her foot. You may use the foot pedal for mode switching.
- a gesture recognition unit (not shown) that recognizes the user's gesture is connected to the processor device 16, and when the gesture recognition unit recognizes a specific gesture performed by the user, a still image acquisition instruction is given. You may do it.
- the mode switching may also be performed using the gesture recognition unit.
- a line-of-sight input unit (not shown) provided near the monitor 18 is connected to the processor device 16, and the line-of-sight input unit recognizes that the user's line of sight is within a predetermined area of the monitor 18 for a certain period of time or longer. If this happens, a still image acquisition instruction may be given.
- a voice recognition unit (not shown) may be connected to the processor device 16 so that when the voice recognition unit recognizes a specific voice emitted by the user, a still image acquisition instruction may be given. The mode switching may also be performed using the voice recognition unit.
- an operation panel such as a touch panel may be connected to the processor device 16 to give a still image acquisition instruction when the user performs a specific operation on the operation panel. The mode switching may also be performed using the operation panel.
- the tip portion 12d has a substantially circular shape, and a first hole portion 20a and a second hole portion 20b are provided.
- the image pickup optical system 29b (see FIG. 3) of the endoscope 12 is housed in the first hole portion 20a, and the objective lens 21 located closest to the subject side among the constituent members of the image pickup optical system 29b is exposed.
- the measurement auxiliary optical optical system 30 (see FIG. 3) of the endoscope 12 is housed in the second hole portion 20b.
- a transparent lid 22 transparent member
- the tip portion 12d of the endoscope has an illumination lens 23 for irradiating the subject with illumination light, an opening 24 for projecting the treatment tool toward the subject, and a water supply for supplying air and water.
- An air supply nozzle 25 is provided.
- the optical axis of the objective lens 21 (the optical axis of the imaging optical system 29b, hereinafter referred to as the imaging optical axis) Ax (see FIG. 4) extends in a direction perpendicular to the paper surface of FIG. That is, the imaging optical axis Ax is orthogonal to both the vertical first direction D1 and the horizontal second direction D2 that are orthogonal to each other.
- the objective lens 21 (first hole portion 20a) and the transparent lid 22 (second hole portion 20b) are arranged along the first direction D1.
- the light source device 14 includes a light source unit 26 and a light source control unit 27.
- the light source unit 26 generates illumination light for illuminating the subject.
- the illumination light emitted from the light source unit 26 is incident on the light guide 28 and is applied to the subject through the illumination lens 23.
- the light source unit 26 includes, as a light source of illumination light, a white light source that emits white light, or a plurality of light sources including a white light source and a light source that emits light of other colors (for example, a blue light source that emits blue light). Is preferably used.
- the light source control unit 27 is connected to the system control unit 41 of the processor device 16.
- the light source control unit 27 controls the light source unit 26 based on an instruction from the system control unit 41.
- the system control unit 41 gives an instruction regarding the light source control to the light source control unit 27, and also controls the light source 30a (see FIG. 4) of the measurement auxiliary optical optical system 30.
- the tip portion 12d of the endoscope 12 is provided with an illumination optical system 29a, an imaging optical system 29b, and a measurement auxiliary optical optical system 30.
- the illumination optical system 29a has an illumination lens 23, and the light from the light guide 28 is irradiated to the observation target through the illumination lens 23.
- the image pickup optical system 29b has an objective lens 21 and an image pickup element 32. The reflected light from the observation target is incident on the image pickup device 32 via the objective lens 21. As a result, a reflected image to be observed is formed on the image sensor 32.
- the image sensor 32 is a color image sensor, which captures a reflected image of a subject and outputs an image signal.
- the image sensor 32 is preferably a CCD (Charge Coupled Device) image sensor, a CMOS (Complementary Metal-Oxide Semiconductor) image sensor, or the like.
- the image pickup device 32 used in the present invention is a color image pickup sensor for obtaining RGB image signals of three colors of R (red), G (green), and B (blue).
- the image sensor 32 is controlled by the image sensor 33.
- a complementary color image sensor provided with complementary color filters of C (cyan), M (magenta), Y (yellow), and G (green) may be used.
- the image signal output from the image sensor 32 is transmitted to the CDS / AGC circuit 34.
- the CDS / AGC circuit 34 performs correlated double sampling (CDS (Correlated Double Sampling)) and automatic gain control (AGC (Auto Gain Control)) on an image signal which is an analog signal.
- CDS Correlated Double Sampling
- AGC Automatic gain control
- the image signal that has passed through the CDS / AGC circuit 34 is converted into a digital image signal by the A / D converter (A / D (Analog / Digital) converter) 35.
- the A / D converted digital image signal is input to the processor device 16 via the communication I / F (Interface) 36.
- the processor device 16 includes a communication I / F (Interface) 38 connected to the communication I / F 36 of the endoscope 12, a signal processing unit 39, a display control unit 40, and a system control unit 41.
- the communication I / F receives the image signal transmitted from the communication I / F 36 of the endoscope 12 and transmits it to the signal processing unit 39.
- the signal processing unit 39 has a built-in memory that temporarily stores an image signal received from the communication I / F 38, processes an image signal group that is a set of image signals stored in the memory, and generates an captured image. ..
- the signal processing unit 39 When the signal processing unit 39 is set to the length measurement mode, the signal processing unit 39 performs a structure emphasizing process for emphasizing the structure of blood vessels and the like on the captured image, and the normal part and the lesion part of the observation target. A color difference enhancement process that extends the color difference may be performed. Further, the signal processing unit 39 and the system control unit 41 are provided in an external processing device (not shown) connected to the processor device 16, and are related to the signal processing unit 39 and the system control unit 41 in the external processing device. Processing may be performed. For example, when the length measurement mode is set, even if the first captured image including the spot SP is sent to an external processing device and the position of the spot SP is specified from the first captured image by the external processing device. Good.
- a measurement marker may be set according to the position of the spot SP (see FIGS. 11 to 13), and a specific image in which the set measurement marker is displayed on the first captured image may be generated. Good. The generated specific image is transmitted to the processor device 16.
- the display control unit 40 displays the captured image generated by the signal processing unit 39 on the monitor 18.
- the system control unit 41 controls the image pickup device 32 via the image pickup control section 33 provided in the endoscope 12.
- the image pickup control unit 33 also controls the CDS / AGC34 and the A / D35 in accordance with the control of the image pickup element 32.
- the still image storage control unit 43 controls the still image of the captured image to be stored in the still image storage unit 42.
- the measurement auxiliary optical optical system 30 includes a light source 30a, a measurement auxiliary light generation element 30b (collimeter lens, diffractive optical element DOE (Diffractive Optical Element), etc.), and a prism 30c. , These are housed inside the second hole 20b.
- the light source 30a emits light of a color that can be detected by the pixels of the image pickup element 32 (specifically, visible light), and is a light emitting element such as a laser light source LD (Laser Diode) or an LED (Light Emitting Diode). , Including the exit lens.
- the wavelength of the light emitted by the light source 30a is preferably, for example, red light of 600 nm or more and 650 nm or less. Alternatively, green light of 495 nm or more and 570 nm or less may be used.
- the light source 30a is controlled by the system control unit 41, and emits light based on an instruction from the system control unit 41.
- the measurement auxiliary light generation element 30b converts the light emitted from the light source into the measurement auxiliary light used for measuring the subject.
- the measurement auxiliary light thus converted is a collimated (suppressed diffusion and convergence) linear parallel light.
- the prism 30c bends (tilts) the optical axis (hereinafter referred to as the auxiliary optical axis) Lm of the measurement auxiliary light to change the traveling direction of the measurement auxiliary light.
- the light emitting slope 30d is tilted with respect to the tip surface of the insertion portion 12a (tip portion 12d), and the imaging light intersects the field of view of the imaging optical system 29b including the objective lens 21 and the lens group.
- the auxiliary optical axis Lm is tilted with respect to the axis Ax.
- the auxiliary optical axis Lm is tilted so that the distance L1 from the tip (tip surface) of the insertion portion 12a intersects the imaging optical axis Ax within a range of 8 mm or more and 12 mm or less. Then, by irradiating the subject with the measurement auxiliary light tilted in this way, a spot SP (see FIGS. 11 to 13) as a circular region (specific region) is formed in the subject.
- the position of the spot SP is specified by the position specifying unit 50, and a measurement marker indicating the actual size is set according to the position of the spot SP.
- the set measurement marker is displayed on the captured image.
- the measurement auxiliary optical optical system 30 is housed in the second hole portion 20b, and the light emitting surface 30d of the prism 30c, which is the tip of the measurement auxiliary optical optical system 30, is inclined with respect to the tip surface of the insertion portion 12a. Therefore, the portion of the light emitting slope 30d is recessed with respect to the tip surface of the insertion portion 12a. Therefore, in the endoscope 12, a transparent lid 22 is provided to close the second hole 20b in order to make the tip surface of the insertion portion 12a flat.
- the transparent lid 22 is formed in a plate shape, and one end surface (surface) is a flat surface 22a.
- the transparent lid 22 is arranged so that the flat surface 22a is flush with the tip of the second hole 20b (the tip surface of the insertion portion 12a). By making the tip surface of the insertion portion 12a flat in this way, it is possible to prevent problems such as the absence of the transparent lid 22 and clogging of foreign matter to block the measurement auxiliary light.
- the flat surface 22a includes not only a perfect flat surface without unevenness, but also an almost flat surface, specifically, a surface having fine unevenness of 0.1 mm or less.
- the flat surface 22a also includes a curved surface.
- the flat surface 22a is a gently curved surface having a height of 1 mm or less and a continuous slope of the tangent line.
- the flat surface 22a is curved in a convex shape and the case where the flat surface 22a is curved in a concave shape, there is a problem that the measurement auxiliary light is blocked in the case where the flat surface 22a is curved in a convex shape.
- the flat surface 22a is a curved surface, it is preferable that the flat surface 22a is curved in a convex shape as a whole.
- the transparent lid 22 flat surface 22a
- the transparent lid 22 protrudes from the second hole portion 20b.
- the problem that the measurement auxiliary light is blocked is less likely to occur (foreign matter is less likely to be clogged on the flat surface 22a). Therefore, when there is a step between the second hole portion 20b and the transparent lid 22, it is preferable that the transparent lid 22 protrudes from the second hole portion 20b.
- a prism 31 transparent member, optical member is arranged between the transparent lid 22 and the light emitting slope 30d.
- the prism 31 has a first contact surface 31a (contact surface) and a second contact surface 31b, the first contact surface 31a is brought into close contact with the light emitting slope 30d, and the second contact surface 31b is attached to the back surface 22b of the transparent lid 22. It is in close contact.
- the prism 31 removes gas from between the transparent lid 22 and the light emitting slope 30d, and makes the space between the transparent lid 22 and the light emitting slope 30d airtight. Then, by making the space between the transparent lid 22 and the light emitting slope 30d airtight in this way, it is possible to prevent the occurrence of problems due to dew condensation.
- dew condensation occurs on the back surface 22b (the surface opposite to the flat surface 22a) and / or the light emitting slope 30d of the transparent lid 22, and problems such as attenuation, diffusion, convergence, and / or refraction of the measurement auxiliary light (condensation). There is no such thing as a problem).
- the present invention is not limited to the above embodiment, and the detailed configuration can be changed as appropriate.
- the refractive index of the prism 30c (the refractive index of the medium on the measurement auxiliary light light source side across the light emitting slope 30d) is "n1”
- the refractive index of the prism 31 transparent across the light emitting slope 30d.
- the refractive index of the medium on the member side is "n2”
- "n1 ⁇ n2" is satisfied and the light emission slope 30d is tilted toward the imaging optical axis Ax side (see FIG. 5).
- the configuration may be the reverse of the configuration shown in FIG. Specifically, as shown in FIG.
- n1> n2 may be set, and the light emitting slope 30d may be tilted to the side opposite to the imaging optical axis Ax.
- the configuration of FIG. 5 and the configuration of FIG. 6 are compared, there is a risk that the measurement auxiliary light is totally reflected on the light emission slope 30d in the configuration of FIG. 6, and in order to avoid this, the light emission slope is used.
- the inclination of 30d (the angle at which the measurement auxiliary light is bent) is limited.
- the configuration of FIG. 5 is preferable to the configuration of FIG. 5 and the configuration of FIG.
- FIG. 6 and FIGS. 7 and 8 described later the same members as those in the above-described embodiment (see FIGS. 4 and 5) are designated by the same reference numerals and the description thereof is omitted.
- the space between the transparent lid 22 and the light emitting slope 30d may be a space (a space filled with gas) in which no member is arranged.
- the transparent lid 22 and the light emitting slope 30d are airtight (see FIGS. 5 and 6).
- the shape and / or size of the prism 31 can be appropriately changed within a range satisfying this (at least within a range satisfying the condition of making the optical path portion of the measurement auxiliary light airtight).
- the prism 100 is provided instead of the transparent lid 22 (see FIG. 5) and the prism 31 (see FIG. 5).
- the prism 100 has a flat surface 22a similar to the transparent lid 22.
- the prism 100 has a first contact surface 31a similar to that of the prism 31.
- the tip surface of the insertion portion 12a is made flat by filling the gap between the prism 100 and the prism 30c and the second hole portion 20b with an adhesive. It is supposed to be.
- a transparent loading material such as an adhesive is loaded as a transparent member between the transparent lid 22 and the light emitting slope 30d to form an optical path portion of the measurement auxiliary light. It may be airtight. Further, by changing the prism 31 (see FIG. 5) and the transparent lid 22 (see FIG. 5) and loading a transparent loading material into the second hole portion 20b, the optical path portion of the measurement auxiliary light is made airtight.
- the tip surface of the insertion portion 12a may be a flat surface.
- the measurement auxiliary optical optical system 30 may be any as long as it can emit the measurement auxiliary light toward the field of view of the imaging optical system.
- the light source 30a may be provided in the light source device, and the light emitted from the light source 30a may be guided to the measurement auxiliary light generation element 30b by the optical fiber.
- the measurement auxiliary light is emitted in the direction crossing the field of view of the imaging optical system. It may be configured.
- the light emitting surface when the measurement auxiliary light is emitted from the measurement auxiliary optical optical system 30 is inclined and recessed with respect to the tip surface of the insertion portion 12a.
- the refraction of the measurement auxiliary light occurs not only when passing through the light emitting slope 30d but also when emitting from the transparent member. Further, if the material of the transparent member differs depending on the part, such as when the transparent member is composed of the transparent lid 22 and the prism 31 (see FIGS. 5 and 7), measurement assistance is also assisted when passing through the boundary between the transparent members. Refraction of light occurs. Therefore, in an actual product, it is naturally designed in consideration of these refractions. However, in the present specification, in order to avoid complicating the explanation, these refractions (refractions other than the refraction that occurs when passing through the light emitting slope 30d) are described without consideration.
- the auxiliary optical axis Lm is tilted with respect to the imaging optical axis Ax so that the auxiliary optical axis Lm intersects the imaging optical axis Ax.
- the measurement auxiliary light in the imaging range (indicated by arrows Qx, Qy, Qz) at each point. It can be seen that the positions of the spots SP formed on the subject (points where the arrows Qx, Qy, and Qz intersect with the imaging optical axis Ax) are different.
- the imaging angle of view of the imaging optical system is represented within the region sandwiched between the two solid lines 45, and the measurement is performed in the central region (the region sandwiched between the two dotted lines 46) with less aberration in the imaging angle of view. ing.
- the size of the subject can be measured with high accuracy by tilting the auxiliary optical axis Lm so that the auxiliary optical axis Lm intersects the imaging optical axis Ax. That is, the auxiliary optical axis Lm may be tilted so as to intersect the field of view of the imaging optical system 29b (it does not necessarily have to intersect the imaging optical axis Ax), but when it intersects the photographing optical axis Ax. Since the spot SP occurs in the central region (the region with less aberration) of the captured image than when the two do not intersect, the sensitivity of the movement of the spot position to the change in the observation distance is high, and the size of the subject is higher. It can be measured accurately.
- an captured image including the spot SP can be obtained.
- the position of the spot SP differs depending on the relationship between the imaging optical axis Ax and the auxiliary optical axis Lm and the observation distance, but if the observation distance is short, pixels showing the same actual size (for example, 5 mm). The number increases, and the number of pixels decreases as the observation distance increases.
- the signal processing unit 39 of the processor device 16 captures an image of a subject illuminated by the illumination light and the measurement auxiliary light in order to recognize the position of the spot SP and set the measurement marker.
- a position specifying unit 50 that specifies the position of the spot SP in the obtained first captured image, and a specific image in which a measurement marker is set based on the position of the spot SP and the set measurement marker is displayed on the first captured image. It is provided with a measurement marker setting unit 52 to be generated.
- the specific image is displayed on the monitor 18 by the display control unit 40.
- the specific image may be an image in which a measurement marker is set with respect to the second captured image obtained by imaging the subject illuminated by the illumination light.
- the position specifying unit 50 identifies the position of the spot SP based on the first captured image. Specifically, the coordinate information regarding the position of the spot SP is specified.
- the spot SP is displayed in a substantially circular red region containing a large amount of components corresponding to the color of the measurement auxiliary light in the first captured image. Therefore, the position of the spot SP is specified from the substantially circular red region.
- the captured image is binarized, and the center of gravity of the white portion (pixel whose signal intensity is higher than the binarization threshold) in the binarized image is specified as the position of the spot SP.
- the measurement marker setting unit 52 sets the measurement marker based on the position of the spot SP in the first captured image.
- the measurement marker setting unit 52 calculates the marker size from the spot SP position with reference to the marker table 54 that stores the relationship between the spot SP position and the measurement marker size in the first captured image. .. Then, the measurement marker setting unit 52 sets the measurement marker corresponding to the size of the marker. Then, the measurement marker setting unit 52 generates a specific image in which the measurement marker is superimposed and displayed on the first captured image.
- the measurement markers include a plurality of types such as a first measurement marker and a second measurement marker, and which type of measurement marker is to be displayed on the captured image is selected according to the user's instruction. Is possible. As the user's instruction, for example, the user interface 19 is used.
- a cross-shaped measurement marker Mx is used as the first measurement marker.
- the actual size is 5 mm (horizontal and vertical of the captured image) in accordance with the center of the spot SP1 formed on the tumor tm1 of the subject.
- a cross-shaped marker Mx1 indicating the direction) is displayed. Since the tumor tm1 and the range defined by the cross-shaped marker Mx1 are substantially the same, the tumor tm1 can be measured to be about 5 mm.
- the actual size is 5 mm (horizontal direction of the second captured image and the center of the spot SP2 formed on the tumor tm2 of the subject).
- a cross-shaped marker Mx2 indicating (vertical direction) is displayed.
- a cross-shaped marker Mx3 indicating an actual size of 5 mm is displayed so as to be aligned with the center of the spot SP3 formed on the tumor tm3 of the subject. Will be done.
- the position of the spot on the image pickup surface of the image pickup device 32 differs depending on the observation distance, and the display position of the marker also differs accordingly.
- the size of the first measurement marker Mx corresponding to the same actual size of 5 mm becomes smaller as the observation distance becomes longer.
- the center of the spot SP and the center of the marker are displayed so as to coincide with each other.
- the first measurement marker is located at a position away from the spot SP. May be displayed.
- the first measurement marker in a state in which the distortion aberration of the captured image is corrected and not deformed may be displayed in the corrected captured image. ..
- the first measurement marker corresponding to the actual size of the subject of 5 mm is displayed, but the actual size of the subject is an arbitrary value (for example, 2 mm) according to the observation target and the observation purpose. , 3 mm, 10 mm, etc.) may be set.
- the first measurement marker has a cross shape in which the vertical line and the horizontal line are orthogonal to each other.
- a scale is provided on at least one of the cross-shaped vertical line and the horizontal line. It may be a graduated cross shape with Mt.
- a distorted cross shape in which at least one of a vertical line and a horizontal line is tilted may be used as the first measurement marker.
- the first measurement marker may be a circle in which a cross shape and a circle are combined and a cross shape.
- the first measurement marker may be a measurement point cloud type in which a plurality of measurement point EPs corresponding to the actual size from the spot are combined.
- the number of the first measurement markers may be one or a plurality, and the color of the first measurement markers may be changed according to the actual size.
- the first measurement marker as shown in FIG. 15, three concentric markers M4A, M4B, and M4C (the sizes are 2 mm, 5 mm, and 10 mm in diameter, respectively) having different sizes are placed on the tumor tm4.
- the spot SP4 formed in the above may be displayed on the first captured image. Since a plurality of these three concentric markers are displayed, the trouble of switching can be saved, and measurement is possible even when the subject has a non-linear shape.
- a combination of multiple conditions can be prepared in advance and selected from the combinations. It may be.
- all three concentric markers are displayed in the same color (black), but when displaying a plurality of concentric markers, they may be displayed as a plurality of colored concentric markers whose colors are changed by the markers.
- the marker M5A is represented by a dotted line representing red
- the marker M5B is represented by a solid line representing blue
- the marker M5C is represented by a alternate long and short dash line representing white.
- the first measurement marker in addition to a plurality of concentric markers, as shown in FIG. 17, a plurality of distorted concentric markers in which each concentric circle is distorted may be used.
- the distorted concentric markers M6A, M6B, and M6C are displayed in the first captured image centering on the spot SP5 formed on the tumor tm5.
- the measurement auxiliary light the light formed as a spot when the subject is irradiated is used, but other light may be used.
- a planar measurement auxiliary light formed as an intersection line 80 on the subject may be used.
- the measurement marker a second measurement marker including the intersection line 80 and the scale 82 as an index of the size of the subject (for example, the polyp P) is generated on the intersection line 80.
- the position specifying unit 50 specifies the position of the intersection line 80 (specific area). The lower the crossing line 80 is, the closer the observation distance is, and the higher the crossing line 80 is, the farther the observation distance is. Therefore, the lower the intersection line 80 is, the larger the distance between the scales 82 is, and the higher the intersection line 80 is, the smaller the distance between the scales 82 is.
- the hardware structure of the processing unit that executes various processes such as the signal processing unit 39, the display control unit 40, and the system control unit 41 has the following various processors (processors). ).
- processors processors
- the circuit configuration is changed after manufacturing the CPU (Central Processing Unit), FPGA (Field Programmable Gate Array), etc., which are general-purpose processors that execute software (programs) and function as various processing units. It includes a programmable logic device (PLD), which is a possible processor, a dedicated electric circuit, which is a processor having a circuit configuration specially designed for executing various processes, and the like.
- PLD programmable logic device
- One processing unit may be composed of one of these various processors, or may be composed of a combination of two or more processors of the same type or different types (for example, a plurality of FPGAs or a combination of a CPU and an FPGA). May be done. Further, a plurality of processing units may be configured by one processor. As an example of configuring a plurality of processing units with one processor, first, as represented by a computer such as a client or a server, one processor is configured by a combination of one or more CPUs and software. There is a form in which this processor functions as a plurality of processing units.
- SoC System On Chip
- a processor that realizes the functions of the entire system including a plurality of processing units with one IC (Integrated Circuit) chip is used.
- the various processing units are configured by using one or more of the above-mentioned various processors as a hardware-like structure.
- the hardware structure of these various processors is, more specifically, an electric circuit in the form of a combination of circuit elements such as semiconductor elements.
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Abstract
Description
12 内視鏡
12a 挿入部
12b 操作部
12c 湾曲部
12d 先端部
12e アングルノブ
13a モード切替スイッチ
13b フリーズスイッチ
14 光源装置
16 プロセッサ装置
18 モニタ(表示部)
19 ユーザーインターフェース
20a 第1孔部
20b 第2孔部
21 対物レンズ
22 透明蓋(透明部材)
22a 平坦面
22b 裏面
23 照明レンズ
24 開口
25 送気送水ノズル
26 光源部
27 光源制御部
28 ライトガイド
29a 照明光学系
29b 撮像光学系
30 計測補助光光学系
30a 光源
30b 計測補助光生成素子
30c プリズム
30d 光出射面
31、100 プリズム(透明部材、光学部材)
31a 第1密着面(密着面)
31b 第2密着面
32 撮像素子
33 撮像制御部
34 CDS・AGC回路
35 A/D回路
36 通信I/F(Interface)
38 通信I/F(Interface)
39 信号処理部
40 表示制御部
41 システム制御部
42 静止画保存部
43 静止画保存制御部
45 実践(撮像光学系29bの視野の境界線)
46 点線(撮像光学系29bの視野の中央領域の境界線)
50 位置特定部
52 計測用マーカ設定部
54 マーカ用テーブル
80 交差ライン
82 目盛り
Ax 撮像光軸
Lm 補助光光軸
D1 第1方向
D2 第2方向
Rx 観察距離の範囲
Px 範囲Rxの近端
Py 範囲Rxの中央付近
Pz 範囲Rxの遠端
Qx、Qy、Qz 撮像範囲
Mt 目盛り
EP 測定点
Mx、Mx1、Mx2、Mx3 十字型の計測用マーカ
M4A、M4B、M4C、M5A、M5B、M5C 同心円状のマーカ
M6A、M6B、M6C 歪曲同心円状のマーカ
tm、tm1、tm2、tm3、tm4、tm5 腫瘍
SP、SP1、SP2、SP3、SP4、SP5 スポット
P ポリープ
Claims (10)
- 挿入部の先端に設けられた第1孔部、第2孔部と、
前記第1孔部に収納された撮像光学系と、
前記第2孔部に収納され、前記第2孔部の内部に配置された光出射面から前記撮像光学系の光軸へ向け、前記撮像光学系の光軸に対して光軸が傾けられた計測補助光を出射する計測補助光光学系と、
前記挿入部の先端と面一な平坦面を有し、前記光出斜面から出射された前記計測補助光の光路に挿入された透明部材と、を備えた内視鏡。 - 前記透明部材は、前記第2孔部を塞ぐ蓋として機能する請求項1記載の内視鏡。
- 前記透明部材は、前記光出斜面に密着される密着面を有し、
前記計測補助光の光路のうち、前記密着面と前記平坦面との間は、前記透明部材により気密である請求項1または2記載の内視鏡。 - 前記透明部材は、光学部材を含んで構成され、
前記密着面は、前記光学部材に形成されている請求項3記載の内視鏡。 - 前記透明部材は、前記密着面と前記平坦面との間に装填される透明な装填材を含んで構成され、
前記装填材が前記光出斜面と密着することにより前記密着面が形成される請求項3記載の内視鏡。 - 前記計測補助光の光路の媒質のうち、前記光出斜面を挟んで前記計測補助光光学系側の媒質の方が前記透明部材側の媒質よりも光屈折率が小さい請求項1~5のいずれか1項に記載の内視鏡。
- 前記撮像光学系の光軸と前記計測補助光光学系の光軸とが交差する請求項1~6のいずれか1項に記載の内視鏡。
- 前記挿入部の先端から、前記撮像光学系の光軸と前記計測補助光光学系の光軸との交差点までの距離が、8mm以上12mm以下の範囲である請求項7記載の内視鏡。
- 前記計測補助光は、直線状の平行光である請求項1~8のいずれか1項に記載の内視鏡。
- 請求項1~7のいずれか1項に記載の内視鏡と、
前記撮像光学系により得られた撮像画像に含まれる領域の中から、前記計測補助光によって形成された特定領域の位置を特定する位置特定部と、
前記特定領域の位置に応じて設定される計測用マーカを、前記撮像画像に表示した特定画像を表示部に表示する表示制御部と、を備えた内視鏡装置。
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| CN202080025717.5A CN113678047B (zh) | 2019-03-29 | 2020-02-20 | 内窥镜、内窥镜装置 |
| JP2021511214A JP7214840B2 (ja) | 2019-03-29 | 2020-02-20 | 内視鏡、内視鏡装置 |
| EP20785071.0A EP3951473B1 (en) | 2019-03-29 | 2020-02-20 | Endoscope and endoscopic device |
| US17/484,891 US20220007921A1 (en) | 2019-03-29 | 2021-09-24 | Endoscope and endoscope apparatus |
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| US17/484,891 Continuation US20220007921A1 (en) | 2019-03-29 | 2021-09-24 | Endoscope and endoscope apparatus |
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| JP2013009896A (ja) * | 2011-06-30 | 2013-01-17 | Fujifilm Corp | 内視鏡 |
| WO2013094569A1 (ja) * | 2011-12-19 | 2013-06-27 | 富士フイルム株式会社 | 内視鏡用照明ユニット及び内視鏡 |
| WO2018051680A1 (ja) | 2016-09-15 | 2018-03-22 | 富士フイルム株式会社 | 内視鏡システム |
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| JPH02287311A (ja) * | 1989-04-28 | 1990-11-27 | Toshiba Corp | 計測機構付内視鏡装置 |
| JP2002095626A (ja) * | 2000-09-22 | 2002-04-02 | Olympus Optical Co Ltd | 内視鏡 |
| JP5315119B2 (ja) * | 2009-04-22 | 2013-10-16 | オリンパス株式会社 | 内視鏡及び内視鏡観察システム |
| JP5808218B2 (ja) * | 2010-11-25 | 2015-11-10 | 富士フイルム株式会社 | 内視鏡用照明光学系ユニット及びその製造方法 |
| WO2012147679A1 (ja) * | 2011-04-27 | 2012-11-01 | オリンパス株式会社 | 内視鏡装置および計測方法 |
| JP5941753B2 (ja) * | 2012-05-28 | 2016-06-29 | 富士フイルム株式会社 | 電子内視鏡装置及び撮像モジュール並びに撮影レンズモールド方法 |
| EP3656274A4 (en) * | 2017-07-18 | 2020-07-15 | FUJIFILM Corporation | ENDOSCOPY DEVICE AND MEASUREMENT SUPPORT METHOD |
| JP2019056722A (ja) * | 2017-09-19 | 2019-04-11 | パナソニックIpマネジメント株式会社 | 斜視内視鏡及び撮像システム |
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2020
- 2020-02-20 WO PCT/JP2020/006828 patent/WO2020202883A1/ja not_active Ceased
- 2020-02-20 CN CN202080025717.5A patent/CN113678047B/zh active Active
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| JP2013009896A (ja) * | 2011-06-30 | 2013-01-17 | Fujifilm Corp | 内視鏡 |
| WO2013094569A1 (ja) * | 2011-12-19 | 2013-06-27 | 富士フイルム株式会社 | 内視鏡用照明ユニット及び内視鏡 |
| WO2018051680A1 (ja) | 2016-09-15 | 2018-03-22 | 富士フイルム株式会社 | 内視鏡システム |
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| CN113678047B (zh) | 2024-05-28 |
| CN113678047A (zh) | 2021-11-19 |
| JP7214840B2 (ja) | 2023-01-30 |
| EP3951473B1 (en) | 2025-11-05 |
| EP3951473A1 (en) | 2022-02-09 |
| US20220007921A1 (en) | 2022-01-13 |
| JPWO2020202883A1 (ja) | 2020-10-08 |
| EP3951473A4 (en) | 2022-05-18 |
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