WO2016174896A1 - Raccord pour endoscope - Google Patents

Raccord pour endoscope Download PDF

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Publication number
WO2016174896A1
WO2016174896A1 PCT/JP2016/054456 JP2016054456W WO2016174896A1 WO 2016174896 A1 WO2016174896 A1 WO 2016174896A1 JP 2016054456 W JP2016054456 W JP 2016054456W WO 2016174896 A1 WO2016174896 A1 WO 2016174896A1
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WO
WIPO (PCT)
Prior art keywords
endoscope
light source
incident
optical fiber
connector
Prior art date
Application number
PCT/JP2016/054456
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English (en)
Japanese (ja)
Inventor
真広 吉野
矢島　浩義
Original Assignee
オリンパス株式会社
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 オリンパス株式会社 filed Critical オリンパス株式会社
Priority to JP2016547621A priority Critical patent/JP6076558B1/ja
Publication of WO2016174896A1 publication Critical patent/WO2016174896A1/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

Definitions

  • the present invention relates to an endoscope connector used for connection between a light source device and an endoscope.
  • endoscopes have been widely used in the medical field, industrial field, and the like.
  • a scanning endoscope that can be inserted into a small-diameter pipe to perform endoscopy and the like has been put into practical use.
  • Conventional scanning endoscopes are reuse-type scanning endoscopes that are supposed to be used repeatedly.
  • disposable type devices that are disposable after a single use are used.
  • the industrial field when used in a special environment such as an environment contaminated with radiation, the state before use cannot be recovered.
  • the connector portion connected to the connector receiver of the light source device has a non-contact structure in which the end surface thereof does not contact the end surface of the connector receiver of the light source device. Resistance can be secured.
  • the reuse-type scanning scanning endoscope can cope with a non-contact structure of the light source device by using a grind lens (a refractive index distribution type lens) or the like.
  • a grind lens a refractive index distribution type lens
  • the light source device be a non-contact type connector receiver that is currently widely used from the viewpoint of ensuring durability and transmission efficiency.
  • a non-contact type connector that is widely used at present can be adopted.
  • Japanese Patent Application Laid-Open No. 2012-143414 as a first conventional example has a structure in which an endoscope connector is connected to a socket of a light source device, and the socket of the light source device is held by a first ferrule.
  • a first fiber stub that collimates by expanding the beam diameter of the laser beam transmitted by the fiber; the second optical fiber is held by the second ferrule in the LG connector on the endoscope side;
  • a connector is disclosed in which a second fiber stub is disposed so as to contact the second ferrule in a non-contact manner.
  • Japanese Patent Application Laid-Open No. 2011-152370 as a second conventional example introduces a fitting portion where a plug-side holder to be fitted to a receptacle-side holder is attached or detached, and a laser beam transmitted by a receptacle-side optical fiber.
  • a plug-side inner sleeve that covers the outer periphery of the ferrule that fixes the plug-side optical fiber, and that both holders are fitted and connected so as to be spaced apart from each other.
  • Both the first conventional example and the second conventional example disclose a light source side fitting portion that is detachably connected to the light source device, and an endoscope side fitting portion that is detachably connected to the endoscope.
  • a connector that efficiently transmits light incident through the light source side fitting portion that is detachably connected to the light source device to the endoscope through the endoscope side connection portion is not disclosed.
  • the present invention has been made in view of the above points, and can efficiently transmit light incident from the light source device side via the light source side fitting portion to the endoscope via the endoscope side connection portion.
  • An object of the present invention is to provide an endoscope connector that can be used.
  • An endoscope connector is attachable to and detachable from a light source device having an emission end that emits illumination light for irradiating a subject, and includes a light source side fitting portion that fits into the light source device.
  • An incident portion that is provided in the light source side fitting portion, and in which the illumination light from the light source device is incident in a state where the light source side fitting portion is fitted with the light source device, and incident on the incident portion
  • An endoscope side fitting portion that is detachable from a transmission portion that transmits the illumination light, and an endoscope having an incident end on which the illumination light is incident, and is fitted to the endoscope;
  • An emission part that emits to an end, and the incident part and the emission part corresponding to at least one of the emission part
  • a source-side fitting portion or the endoscope-side fitting portion having a holding mechanism for holding movably in the vertical direction perpendicular to the optical axis direction or the optical axis direction of the illumination light.
  • FIG. 1 is a diagram illustrating an overall configuration of a scanning endoscope system including an endoscope connector according to a first embodiment.
  • FIG. 2 is a diagram illustrating a configuration of a distal end portion of the scanning endoscope.
  • FIG. 3 is a diagram showing an internal configuration of the main unit.
  • 4A is an enlarged view showing a connector receiver of the light source unit, an endoscope connector, and a connector of a disposable endoscope in FIG.
  • FIG. 4B is a diagram showing a state where a connector of a disposable endoscope is attached to the connector receiver of the light source unit via the connector for endoscope.
  • FIG. 5A is an enlarged view showing the vicinity of the emitting end of the connector receiver in FIG. 4B.
  • FIG. 5B is a perspective view showing a sleeve.
  • FIG. 6 is a diagram showing an endoscope connector and the like according to a first modification of the first embodiment.
  • FIG. 7 is a view showing an endoscope connector and the like according to a second modification of the first embodiment.
  • a scanning endoscope system (hereinafter abbreviated as an endoscope system) 1 shown in FIG. 1 is a disposable disposable endoscope (abbreviated as a disposable endoscope) 2A that is not repeatedly used and is a disposable one.
  • An image corresponding to the image signal is displayed by the endoscope connector 4 of the first embodiment of the present invention interposed when 2A is connected to the main body device 3 and the image signal generated by the main body device 3.
  • the disposable endoscope 2A and the reuse type endoscope 2B have the same configuration except for the difference in the structure of a part of the illumination side connector as described below.
  • the disposable endoscope 2A includes a contact-type illumination side connector 16A
  • the reuse-type endoscope 2B includes a non-contact type illumination-side connector 16B.
  • a flexible insertion portion 11 to be inserted into the subject 6 and an operation portion 12 provided at the rear end (base end) of the insertion portion 11 are provided.
  • a flexible universal cable 13 having one end extending from the operation unit 12, a detection-side connector 14 as a first connector provided at the other end of the universal cable 13, and the detection-side connector 14
  • a contact-type illumination-side connector 16A serving as a second connector provided at an end portion of the cable 15 extending from the side portion.
  • the detection-side connector 14 detects a rear end of a detection light transmission fiber (hereinafter abbreviated as detection optical fiber) 17 that transmits (guides) the detection light inserted into the universal cable 13, the operation unit 12, and the insertion unit 11.
  • detection optical fiber detection light transmission fiber
  • FIG. 1 shows a partial configuration of the reuse type endoscope 2B.
  • the main body device 3 includes a light source unit 21 that supplies illumination light to the disposable endoscope 2A or the reuse type endoscope 2B, and a control unit 22 that performs control including processing for generating an image from detection light by the detection optical fiber 17. And have.
  • the light source unit 21 transmits a laser diode module (abbreviated as an LD module) 23 that generates laser light serving as illumination light, and a laser beam that serves as illumination light generated through an optical fiber 24, and from the end of the optical fiber 24.
  • an illumination-side connector receiver 25 that emits light.
  • the illumination-side connector receiver 25 is connected (attached) so that the illumination-side connector 16B of the reuse type endoscope 2B is fitted to form a non-contact type connector receiver.
  • the 2A illumination side connector 16A is connected (attached) via the endoscope connector 4 (see FIG. 4B).
  • the control unit 22 includes a detection-side connector receiver 26 to which the detection-side connector 14 is detachably connected, and a control board 29 connected to the detection-side connector receiver 26 via a cable 27 and a detection optical system 28.
  • the detection-side connector receiver 26 includes a detection optical connector base 26a to which the detection optical connector base 14a of the detection-side connector 14 is detachably connected and an electrical connector receiver to which the electrical connector 14b of the detection-side connector 14 is detachably connected. 26b.
  • the detection optical connector base 14a is connected to the detection optical connector base 26a, the detection light emitted from the end face of the detection optical fiber 17 held by the detection optical connector base 14a passes through the detection optical system 28 and is a photodetector. Is efficiently received (detected), converted into a detection signal as an electric signal, and input to the control board 29.
  • the electrical connector 14b When the electrical connector 14b is connected to the electrical connector receiver 26b, the electrical power of the electrical connector receiver 26b serving as the end of the cable 27 that transmits the drive signal generated by the drive circuit 33 (see FIG. 3) in the control board 29 is obtained. The electrical contact of the electrical connector 14b that contacts the contact is conducted. Then, a drive signal is applied to the scanner 18 through drive lines 19a and 19b (see FIG. 2) connected to the electrical contacts of the electrical connector 14b.
  • an illumination light transmission fiber (hereinafter abbreviated as illumination optical fiber) 31 that transmits (guides) illumination light generated in the light source unit 21 of the main body device 3 is provided. It is inserted.
  • the illumination optical fiber 31 is inserted into the insertion portion 11 from the illumination side connector 16A through the cable 15 and the like.
  • the illumination optical fiber 31 is attached to the scanner 18 through the ferrule 32 in the distal end portion 11 a of the insertion portion 11 in the vicinity of the distal end thereof.
  • the scanner 18 is applied with a drive signal generated by the drive circuit 33 in the main unit 3 so that the tip of the illumination optical fiber 31 can be swung in a direction perpendicular to the longitudinal direction thereof.
  • FIG. 2 shows one of the piezoelectric elements 34a and 34b that swing in the vertical direction along the plane of the paper and the piezoelectric elements 34c and 34d that swing in the direction perpendicular to the plane of the paper.
  • An illumination lens 35 is provided so as to face the tip of the illumination optical fiber 31, and the illumination light emitted from the tip of the oscillated illumination optical fiber 31 is collected by the illumination lens 35, and the inner surface of the subject 6.
  • a light spot is formed on the inner surface of the subject 6.
  • a part of the light reflected at the irradiation position where the light spot is formed is incident on the distal end surface of the detection optical fiber 17 arranged in a ring shape on the outer peripheral surface of the distal end portion 11a, and the detection optical fiber 17 is incident.
  • the transmitted light is transmitted to the detection optical connector base 14a of the detection side connector 14 at the rear end.
  • the illumination-side connector 16A provided at the proximal end of the illumination optical fiber 31 has ferrules 36a and 36b that hold the illumination optical fiber 31 concentrically in the illumination-side connector 16A and the illumination optical fiber 31 in a state of passing therethrough.
  • a flange 37 that holds the ferrules 36a and 36b and a holding member 38 that concentrically holds the flange 37 and the ferrule 36b on the front surface side of the flange 37 are provided.
  • the lengths from which the illumination optical fiber 31 and the ferrule 36a protrude rearward (base end) from the base end face of the flange 37 are provided to be equal. This length is set to be slightly longer than the length of the endoscope side fitting portion or the length of the endoscope side fitting portion provided in the endoscope side connector receiver 72 in the endoscope connector 4. Is set. Further, the end portion of the illumination optical fiber 31 protruding rearward from the base end surface of the flange 37 serves as an incident end 31a serving as an incident portion on which the illumination light is incident.
  • the incident end 31a of the illumination-side connector 16A is in contact with the optical fiber emitting portion of the endoscope connector 4 or It is in a state of contact.
  • the illumination side connector 16B in the reuse type endoscope 2B is indicated by a two-dot chain line.
  • the illumination side connector 16B in the reuse type endoscope 2B is formed by integrating a green lens 39 as a gradient index lens at the end of the illumination optical fiber 31 with the same outer diameter as the illumination optical fiber 31 in the illumination side connector 16A. It has a structure provided automatically. That is, the illumination side connector 16B holds the ferrules 36a and 36b that hold the proximal end portion of the illumination optical fiber 31 concentrically and the illumination optical fiber 31 in the same manner as the illumination side connector 16A. In addition, a flange 37 that holds the ferrules 36a and 36b and a holding member 38 that concentrically holds the flange 37 and the ferrule 36b on the front surface side of the flange 37 are provided.
  • the end portion of the green lens 39 that protrudes rearward from the base end surface of the flange 37 and is provided at the end portion of the illumination optical fiber 31 becomes an incident end 31b that forms an incident portion on which the illumination light is incident. Further, the length from the base end surface of the flange 37 to the incident end 31b which is the end of the green lens 39 is connected to the green lens 30 on the side of the illumination side connector receiver 25 when connected to the illumination side connector receiver 25 of the light source unit 21. It is set (adjusted) so as to be in a non-contact and opposing arrangement state.
  • ferrule 36a, 36b shown in FIG. 2 etc. has shown the thing from which an outer diameter differs, you may comprise by one common ferrule.
  • the illumination side connector 16B has basically the same structure as the light source side connector 71 in the endoscope connector 4 described later.
  • FIG. 3 shows the detailed configuration of the main unit 3 and the configuration of the endoscope connector 4.
  • the LD module 23 in the main unit 3 includes R-LD 41a, G-LD 41b, and B-LD 41c that form three laser light sources that respectively generate red (R), green (G), and blue (B) laser beams.
  • a laser drive circuit 42 that emits these laser light sources in a pulsed manner, and R, G, and B laser beams emitted from the R-LD 41a, G-LD 41b, and B-LD 41c are transmitted through an optical fiber and combined.
  • a container 43 is a container 43.
  • the R, G, and B laser beams combined by the multiplexer 43 are emitted from the emission end of the optical fiber 24 held by the illumination side connector receiver 25 that holds the vicinity of the emission end of the optical fiber 24.
  • the drive circuit 33 in the control board 29 generates a drive signal, and the drive elements 19a and 19b connected to the drive lines 27a and 27b forming the cable 27 in the main body device 3 are passed through the piezoelectric elements 34a and 34b of the scanner 18.
  • a drive signal is applied to 34c and 34d, and the tip of the illumination optical fiber 31 is two-dimensionally swung.
  • the control circuit 45 on the control board 29 refers to the information in the memory 46 to control the operation of the drive circuit 33 and to control the operation of the laser drive circuit 42 in synchronization with the generation of the drive signal.
  • the control circuit 45 controls the laser drive circuit 42 so that the three laser light sources emit pulses, and the pulse light emission causes the subject 6 to move toward the subject 6 side. A light spot is formed.
  • the memory 46 stores information on the timing at which the laser light source emits pulses in association with the time when the drive signal is generated or the amplitude position of the drive signal.
  • the light reflected on the subject 6 side is detected as detection light by the detection optical fiber 17, and is emitted from the end face of the detection optical connector base 14a connected to the detection side connector base receiver 26a.
  • a detection optical system 28 is arranged to face the end face of the detection optical connector base 14a.
  • the detection optical system 28 is disposed on an optical path facing the end face of the detection optical connector base 14a, and the detection light emitted from the end face is generated by the first lens 28a that generates parallel light, and the first lens 28a.
  • the first dichroic mirror 28b, the second dichroic mirror 28c, the second lens 28d, and the third dichroic mirror 28b, which are sequentially arranged along the optical path of the collimated light, are arranged on the reflected light path of the first dichroic mirror 28b.
  • the first dichroic mirror 28b selectively transmits light in the R wavelength band, and the first photodetector 28g disposed at a position where the light collected by the third lens 28e is detected is detected.
  • R light in the light is received, photoelectrically converted, and an R detection signal is output.
  • the second dichroic mirror 28c selectively transmits light in the G wavelength band, and the second photodetector 28h disposed at a position where the light collected by the fourth lens 28f is detected is detected.
  • G light in the light is received, photoelectrically converted, and a G detection signal is output.
  • the light that has passed through the second dichroic mirror 28c receives the B light in the detection light, and the third photodetector 28i disposed at the position where the light collected by the second lens 28d is detected, A B detection signal is output after photoelectric conversion.
  • the R, G, and B detection signals detected by the first photodetector 28g, the second photodetector 28h, and the third photodetector 28i are amplified by the amplifiers 47a, 47b, and 47c, respectively.
  • the A / D converters 48a, 48b, and 48c convert the digital signals.
  • the digital R, G, B detection signals converted by the A / D converters 48 a, 48 b, 48 c are input to the pixel array processing circuit 49.
  • the pixel array processing circuit 49 generates a pixel signal (image signal) of a pixel array corresponding to the spiral trajectory with reference to the position information of the irradiation position stored in advance in the memory 46.
  • the memory 46 stores information in which the order in which the three laser light sources emit pulses and information on the irradiation position corresponding to each order are associated with each other.
  • the pixel array processing circuit 49 converts a pixel signal (image signal) corresponding to the spiral trajectory into an image signal having a standard pixel array corresponding to the raster scan method (used in a standard display device). I do.
  • the image signal of the standard pixel array generated by the pixel array processing circuit 49 is automatically adjusted in gain so as to be an image signal having an amplitude suitable for observation by the AGC circuit 50 and is output to the correction circuit 51.
  • the correction circuit 51 outputs an image signal after performing contour enhancement, gamma correction, pixel defect correction, and the like to the monitor 5.
  • the monitor 5 displays a color image corresponding to the image signal.
  • the average value Yav in the frame period is calculated as the brightness of the image signal, and is output to the dimming circuit 52.
  • the dimming circuit 52 generates a difference from the reference brightness in the brightness of the input average value Yav as a dimming signal, and outputs the generated dimming signal to the laser driving circuit 42.
  • the laser drive circuit 42 adjusts the amount of light emitted when the laser light source emits light according to the dimming signal.
  • the laser driving circuit 42 adjusts the light emission amount so that the brightness of the detected (calculated) image signal becomes the reference brightness.
  • 4A and 4B are enlarged views showing a state where the configuration of the endoscope connector 4 of FIG. 3 is not connected to the illumination-side connector receiver 25 and the connected state, respectively.
  • the illumination-side connector receiver 25 holds the vicinity of the exit end of the optical fiber 24 that transmits the illumination light generated by the LD module 23 in the cylindrical space of the cylindrical member 61.
  • a green lens 30 as a gradient index lens is integrally provided on the optical fiber 24 with the same outer diameter as the optical fiber 24. Then, the light transmitted through the optical fiber 24 is expanded by the green lens 30 to be converted into parallel light (beam), and is emitted from the emission end 30 a of the green lens 30.
  • FIG. 5A shows an explanatory view of the action of the green lens 30.
  • FIG. 5A shows an explanatory diagram of the operation of the green lens 30 and the like in a state where the endoscope connector 4 is connected to the illumination side connector receiver 25 in FIG. 4B.
  • the optical fiber 24 transmits laser light as illumination light in a single mode in the core 24b covered with the clad 24a having different refractive indexes, and the laser light emitted from the end face of the core 24b is expanded by the green lens 30.
  • the parallel light (beam) is emitted from the emission end 30a.
  • the optical fiber 24 passes through a hole in the center of a disk-shaped first flange 62 fixed to the inner surface of the rear end (base end) of the cylindrical member 61 and faces the first flange 62 in the cylindrical member 61.
  • the disc-shaped second flange 63 is held by the second flange 63 so as to pass through the center hole of the arranged disc-shaped second flange 63 and protrude from the front surface of the second flange 63 by a predetermined length. Further, the optical fibers 24 on both sides passing through the second flange 63 are held by the first ferrule 64 and the second ferrule 65, and one end face of the first ferrule 64 and the second ferrule 65 is the second ferrule.
  • the flange 63 is fixed.
  • the outer diameter of the second flange 63 is set slightly smaller than the inner diameter of the outer cylindrical member 61, and the outer diameter of the first ferrule 64 is smaller than the outer diameter of the second flange 63.
  • a coil-shaped or helical spring 66 having an inner diameter slightly larger than the outer diameter of the first ferrule 64 is disposed between the first flange 62 and the second flange 63 in a compressed state.
  • the second flange 63 is biased in a direction away from the first flange 62 by the elastic force (restoring force) of the spring 66.
  • the cylindrical member 61 has a stepped inner surface so that the inner diameter thereof becomes a small diameter, for example, from a tip surface to a position at a predetermined distance, and the second flange 63 is formed by the elastic force of the spring 66. Is elastically positioned at a position in contact with the stepped inner surface.
  • the longitudinal direction of the central axis of the optical fiber 24 or the optical axis direction of the illumination light transmitted by the optical fiber 24, the optical axis direction is the Z axis, and the direction perpendicular to the Z axis is the X axis.
  • the second flange 63 holding the exit end side portion including the exit end of the optical fiber 24 is urged so as to elastically contact the stepped inner surface.
  • both ends of the spring 66 are in the arrangement state in which the optical fiber 24 held in the through hole by the second flange 63 abutted against the stepped inner surface by the elastic force of the spring 66 is the central axis of the cylindrical member 61.
  • the first flange 62 and the second flange 63 are fixed.
  • the second flange 63 is positioned in the optical axis direction so as to contact the stepped inner surface by the elastic force of the spring 66, and in the state of contacting the stepped inner surface, It is also movably held in the vertical X-axis and Y-axis directions.
  • the second ferrule 65 that holds the optical fiber 24 and the green lens 30 protruding from the front surface of the second flange 63 coaxially with the same length is held coaxially by a sleeve 67 having a C-ring cross section, The base end of the sleeve 67 is fixed to the second flange 63.
  • the sleeve 67 is provided with a notch 67a along the longitudinal direction, and has a structure in which the inner diameter can be slightly changed compared to the inner diameter when the notch 67a is not provided.
  • the sleeve 67 is set to the same length as the length in the longitudinal direction of the small diameter portion that has a small diameter from the stepped inner surface of the cylindrical member 61. Further, as shown in FIG. 4A and the like, the inner diameter of the cylindrical member 61 outside the sleeve 67 is larger than the outer diameter of the sleeve 67, and a space having a gap is formed outside the outer diameter of the sleeve 67.
  • the sleeve 67 has a structure that can respond to changes in the inner diameter.
  • the sleeve 67 in FIGS. 4A and 4B is shown, for example, in a cross-section (only the lower side is a cross-sectional view) on the plane including the notch in FIG.
  • a sleeve 87 provided in the endoscope connector 4 to be described later has the same structure as FIG. 5B, the sleeve of FIG. 5B is indicated by 67 (87).
  • a notch is also indicated by 67a (87a).
  • the inner space of the sleeve 67 that is the front side of the end face of the second ferrule 65 that holds the optical fiber 24 provided with the green lens 30 coaxially is the light source side that serves as the light source side fitting portion of the endoscope connector 4.
  • a connector connecting outer fitting portion 68 (see FIG. 4A) is formed which is detachably connected in a state where the connector 71 or the illumination side connector 16B of the reuse type endoscope 2B is fitted.
  • a tapered lead-in portion 69 having an enlarged diameter on the end side is provided at the opening end of the connector connecting outer fitting portion 68 of the sleeve 67, and is inserted for connection.
  • the light source side connector 71 or the illumination side connector 16B to be easily fitted to the inner diameter on the deep side.
  • the light source side connector 71 is inserted into the connector connecting outer fitting portion 68 in an eccentric state slightly deviated from the center of the connector connecting outer fitting portion 68, it is moved to the center side by the tapered introduction portion 69.
  • the eccentricity can be corrected and fitted to the inner diameter on the deep side.
  • the endoscope connector 4 is fitted with a light source side connector 71 which is detachably connected by fitting to an illumination side connector receiver 25 provided in the light source section 21, and an illumination side connector 16A of the disposable endoscope 2A. And an endoscope-side connector receiver 72 having an endoscope-side fitting portion that is detachably connected.
  • the light source side connector 71 has almost the same structure as the illumination side connector 16B shown in FIG.
  • the optical fiber 73 forming the optical transmission part in the endoscope connector 4 is held in a state where the base end side thereof is concentrically held, and the optical fiber 73 being penetrated, and the ferrules 74a and 74b. And a holding member 76 that concentrically holds the flange 75 and the ferrule 74b on the front side (terminal side) of the flange 75. Further, the ferrule 74 a is set to an outer diameter that fits into the inner diameter of the sleeve 67. Further, a green lens 77 is integrally provided at the base end of the optical fiber 73 with the same outer diameter as the outer diameter of the optical fiber 73.
  • the base end portion of the green lens 77 becomes an incident end 77a that forms an incident portion on which illumination light emitted from the emission end 30a of the illumination-side connector receiver 25 is incident.
  • the green lenses 30 and 77 have the same outer diameter, and the optical fibers 24 and 73 have the same outer diameter.
  • the outer diameter of the optical fiber 73 or the green lens 77 may be set to be equal to or larger than the outer diameter of the optical fiber 24 or the green lens 30.
  • the length of the columnar shape from the base end surface of the flange 75 to the incident end 77a that is the end of the green lens 77 is connected to (attached to) the illumination-side connector receiver 25 of the light source unit 21.
  • both the green lenses 30 and 77 are in a disposition state facing each other in a non-contact state.
  • the parallel light (beam) emitted from the green lens 30 is collected from the parallel light (beam) by the green lens 77 and concentrically covered by the clad 73 a in the optical fiber 73. It is incident on the end surface of the broken core 73b.
  • an optical fiber 73 that forms a light transmission portion in the light source side connector 71 extends toward the distal end along the center of the holding member 76, and transmits light in the endoscope side connector receiver 72.
  • the endoscope side connector receiver 72 has a structure similar to the illumination side connector receiver 25 shown on the left side of FIG. 4A. That is, the endoscope side connector receiver 72 replaces the optical fiber 24 in which the green lens 30 in the illumination side connector receiver 25 is provided and the emission end 30a is formed with the optical fiber 73 in which the emission end is formed without providing the green lens. It is almost the same as the structure.
  • the endoscope-side connector receiver 72 is a first disc-shaped first member in which an optical fiber 73 extending forward (terminal side) along the center of the holding member 76 is loosely fitted through a hole in the center.
  • a flange 81, a second flange 82 through which the optical fiber 73 passing through the first flange 81 passes and is fixed (held), and an optical fiber 73 that passes through the second flange 82 are coaxial on both sides.
  • a first ferrule 83 and a second ferrule 84 that are held in a shape, and the end portions of the first ferrule 83 and the second ferrule 84 are fixed (or held) by a second flange 82. Yes.
  • the first flange 81 has a base end face connected to the holding member 76, and the outer peripheral face of the first flange 81 is fitted and fixed to the inner peripheral face of the base end of the cylindrical member 85 as a cylindrical member.
  • the cylindrical base end of the cylindrical member 85 is fixed to the front end of the holding member 76.
  • the outer diameter of the second flange 82 is set slightly smaller than the inner diameter of the outer cylindrical member 85, and the outer diameter of the first ferrule 83 is smaller than the outer diameter of the second flange 82.
  • a coil-shaped or helical spring 86 having an inner diameter slightly larger than the outer diameter of the first ferrule 83 is disposed between the first flange 81 and the second flange 82 in a compressed state.
  • the second flange 82 is biased in the direction away from the first flange 81 (that is, the direction of the central axis of the optical fiber 73 or the direction of the optical axis of the illumination light) by the elastic force (restoring force) of the spring 86. ing. Due to the elastic force of the spring 86, the second flange 82 is in the longitudinal direction of the optical fiber 73 (or the light of the illumination light) so as to abut the stepped inner surface having a small diameter in the middle of the longitudinal direction of the cylindrical member 85. The position in the axial direction is elastically positioned.
  • the cylindrical member 85 is provided with an inner surface that is stepped so that a small diameter portion having a small inner diameter is formed at a predetermined distance from the base end face, and the spring Due to the elastic force of 86, the second flange 82 is elastically positioned at a position where it abuts against the stepped inner surface.
  • the base end surface of the first ferrule 83 is set to be separated by a small distance d without contacting the first flange 81 (see FIG. 4A).
  • the second flange 82 is disposed on the central axis of the cylindrical member 85, and is concentric between the outer peripheral surface of the second flange 82 and the inner peripheral surface of the cylindrical member 85.
  • a gap g1 see FIG.
  • the optical fiber 73 emits light.
  • the center position of the front surface of the second flange 82 in the endoscope-side connector receiver 72 (by elastically contacting the second flange 82 holding the emission end side portion including the end 73c with the stepped inner surface ( Alternatively, the optical fiber 73) held in the through hole of the second flange 82 is positioned in the Z-axis direction or the optical axis direction.
  • both ends of the spring 86 are in the arrangement state in which the optical fiber 73 held in the through hole by the second flange 82 abutted against the stepped inner surface by the elastic force of the spring 86 is the central axis of the cylindrical member 85.
  • the first flange 81 and the second flange 82 are respectively fixed.
  • the second flange 82 is positioned in the optical axis direction so as to contact the stepped inner surface of the cylindrical member 85 by using the elastic force of the spring 86 and in contact with the stepped inner surface.
  • a holding mechanism (or an elastic positioning mechanism) 90 is provided that is movably held in the optical axis direction and that is also movable in the X axis and Y axis directions perpendicular to the optical axis direction by the gap g1. .
  • the emission end 73c that forms an emission part for emitting illumination light in the optical fiber 73 held so as to pass through the center hole of the disc-shaped second flange 82 is also formed on the disposable endoscope 2A.
  • the endoscope connector 4 transmits the illumination light to the emission end 73c that forms the emission part for emitting the illumination light in the optical fiber 73 by the holding mechanism 90 using the spring 86 ( It has a function of holding (moving by a spring 86, a flange 82, and the like) so as to be movable in an optical axis direction for guiding light and a vertical direction perpendicular to the optical axis direction.
  • the optical fiber 73 is arranged in the peripheral portion including the inside of the hole of the first flange 81 so as to be slightly deformable in the longitudinal direction (optical axis direction) and the vertical direction perpendicular to the longitudinal direction.
  • the second ferrule 84 that holds the optical fiber 73 protruding from the front surface of the second flange 82 concentrically with the same length is held coaxially by a sleeve 87 having a C-ring cross section.
  • the proximal end is fixed to the second flange 82.
  • this sleeve 87 has a notch 87a along the longitudinal direction as shown in FIG. 5B, and has a structure in which the inner diameter can be slightly changed compared to the inner diameter when no notch 87a is provided. Yes.
  • the sleeve 87 is set to have the same length as the length in the longitudinal direction of the small diameter portion that has a small diameter from the stepped inner surface of the cylindrical member 85.
  • the inner diameter of the cylindrical member 85 outside the sleeve 87 is larger than the outer diameter of the sleeve 87, and a space having a gap g2 is formed outside the outer diameter of the sleeve 87.
  • the sleeve 87 has a structure that can respond to changes in the inner diameter of the sleeve 87. 4A and 4B, the sleeve 87 is shown in a cross-section (only the lower side is a cross-sectional view) on the surface including the notch 87a.
  • the inner space of the sleeve 87 on the front side of the end face of the second ferrule 84 that holds the optical fiber 73 coaxially is detachably connected by fitting (inserting) the illumination side connector 16A of the disposable endoscope 2A.
  • the connector connecting outer fitting portion 88 (see FIG. 4A) having the endoscope side fitting portion to be formed is formed.
  • a tapered lead-in portion 89 having an enlarged diameter on the end side is provided at the opening end of the connector connecting outer fitting portion 88 of the sleeve 87, and is inserted for connection.
  • the illumination side connector 16A is structured to be easily fitted to the inner diameter on the deep side.
  • the illumination side connector 16A when the illumination side connector 16A is inserted into the connector connecting outer fitting portion 88 in an eccentric state slightly deviated from the center of the connector connecting outer fitting portion 88, it is moved to the center side by the tapered introduction portion 89.
  • the eccentricity can be corrected and fitted to the inner diameter on the deep side.
  • the endoscope connector 4 of the present embodiment is detachable from a light source unit 21 forming a light source device having an emission end that emits illumination light for irradiating a subject, and the light source device (the illumination side connector thereof).
  • a light source side connector 71 that forms a light source side fitting portion that is fitted (or fitted and connected) to the receiver 25), and the light source side fitting portion is provided on the light source side fitting portion.
  • An illumination side connector 16A in a disposable endoscope 2A as an endoscope having an incident end 31a to which the illumination light is incident can be attached and detached, and the illumination side connector 16A in the endoscope is fitted.
  • Match Is connected to the endoscope side
  • Match is provided on the endoscope side fitting portion, and has an endoscope side connector receiver 72 having a connector connecting outer fitting portion 88 that forms an endoscope side fitting portion.
  • An emitting unit that emits the illumination light transmitted by the transmission unit to the incident end of the endoscope in a state where the endoscope side fitting unit is fitted to the endoscope (the illumination side connector 16A).
  • the light source side fitting portion or the endoscope side fitting portion corresponding to at least one of the incident portion and the emitting portion, the optical axis direction of the illumination light or the optical axis.
  • a holding mechanism 90 that holds the elastic member 90 so as to be movable in a vertical direction perpendicular to the direction.
  • the endoscope side fitting portion in the emitting portion, is perpendicular to the optical axis direction of the illumination light and the optical axis direction in the endoscope side fitting portion. That is movable in any direction is disclosed.
  • the illumination side connector receiver 25 of the reuse type endoscope 2B of FIG. Connected.
  • the disposable endoscope 2A Is used. Since the illumination side connector receiver 25 of the light source unit 21 is a contact type and the illumination side connector 16A of the disposable endoscope 2A is a contact type, the endoscope connector 4 is interposed as shown in FIG. As shown in FIGS. 4A to 4B, the illumination side connector 16 ⁇ / b> A of the disposable endoscope 2 ⁇ / b> A is connected to the illumination side connector receiver 25 of the light source unit 21.
  • the tapered introduction portion 69 is provided at the opening end of the connector connecting outer fitting portion of the illumination side connector receiver 25 of the light source portion 21, the light source side connector 71 in the endoscope connector 4 is fitted. The operation of connecting to match is facilitated.
  • a tapered lead-in part 89 is provided in the connector connecting outer fitting portion 88 of the endoscope side connector receiver 72 to which the illumination side connector 16A of the disposable endoscope 2A in the endoscope connector 4 is connected. Therefore, the operation of connecting the illumination side connector 16A of the disposable endoscope 2A so as to be fitted becomes easy.
  • the endoscope connector 4B in the state where the endoscope connector 4 is connected to the light source side connector 71, the endoscope is used in a non-contact state in which the endoscope connector 4 is not in contact with the emission end 30a of the green lens 30 of the light source unit 21.
  • the incident end 77a of the green lens 77 of the connector 4 is in a state of being opposed. For this reason, even when the attachment / detachment is repeated, the illumination-side connector receiver 25 and the light source-side connector 71 are less likely to be damaged and the durability and reliability can be improved as compared with the case of the contacting structure. Further, even in a non-contact state, as shown in an enlarged view in FIG.
  • the illumination light emitted from the light source unit 21 side since the light is emitted and incident (or light is transmitted and received) by parallel light, the illumination light emitted from the light source unit 21 side. Can be efficiently transmitted to the optical fiber 73 forming the optical transmission section, and can be emitted from the emission end 73 c of the optical fiber 73.
  • the illumination optical fiber of the illumination side connector 16A is connected to the emission end 73c of the optical fiber 73 of the illumination side connector 16A.
  • the incident light 31 emitted from the light emitting end 73c can be efficiently incident on the illumination optical fiber 31 from the light incident end 31a and transmitted to the illumination optical fiber 31 side.
  • the tip of the ferrule 36a comes into contact with and comes into contact with the emission end 73c of the optical fiber 73. The case of further pressing from the state can occur.
  • the flange 82 held by the elastic force of the spring 86 according to the pressing force moves in the direction in which the pressing force acts as indicated by the arrow A. To do. Further, during connection operation, it is possible to reduce application of excessive force to the emission end 73c of the optical fiber 73 and the incident end 31a of the illumination optical fiber 31, and to reduce damage or the like.
  • the ferrule 36a may be inserted into the cylindrical recess (for connection) with a slight deviation from the optical axis direction of the illumination light.
  • FIG. 4B in the case of being inserted eccentrically from the optical axis direction of the illumination light, it is deformed in a direction perpendicular to the optical axis direction of the illumination light and its cylindrical storage volume (storage space) is variable.
  • the sleeve 87 can be deformed, and the flange 82 holding the base end of the sleeve 87 can also move upward as indicated by the arrow B, and the eccentric ferrule 36a can be fitted and stored.
  • light incident from the light source device side via the light source side fitting portion can be efficiently transmitted to the endoscope via the endoscope side connection connector.
  • the light source side connector 71 has a structure in which the flange 75 is rigidly fixed to the holding member 76, but the light source side connector 71 is flanged in the endoscope side connector receiver 72.
  • the structure may be configured to be movable in the longitudinal direction of the optical fiber 73 that almost coincides with the optical axis direction of the illumination light or the direction of the optical axis by an urging member such as a spring 86 as shown in FIG.
  • the illumination side connector receiver 25 of the light source unit 21 is configured to be movable in the optical axis direction and in a direction perpendicular to the optical axis direction.
  • the present invention is not limited to this, and it may be configured to be movable only in the optical axis direction or only in the direction perpendicular to the optical axis direction.
  • the endoscope side connector receiver 72 in the endoscope connector 4 is configured to be movable in the optical axis direction and in a direction perpendicular to the optical axis direction.
  • the present invention is not limited to this configuration example, and may be configured to be movable in the optical axis direction or a direction perpendicular to the optical axis direction.
  • the illumination side connector receiver 25 of the light source unit 21 and the endoscope side connector receiver 72 of the endoscope connector 4 are not configured to be movable in the optical axis direction or the like, and have a rigid structure as shown below. It may be simplified.
  • the illumination-side connector receiver 25B of the light source unit 21 shown in FIG. 6 has a flange 63 that is rigidly fixed to the cylindrical member 61 without providing the first flange 62 in the illumination-side connector receiver 25 of FIG. 4A. It is fixed through the hole.
  • the illumination side connector receiver 25B has a structure without the ferrule 64 and the spring 66. The other structure is the same as that of the illumination side connector receiver 25 shown in FIG. 4A and the like.
  • an endoscope connector 4B of the first modification shown in FIG. 6 is an endoscope side connector receiver 72 having a simplified structure from the endoscope side connector receiver 72 in the endoscope connector 4 of FIG. 4A. 72B.
  • the endoscope-side connector receiver 72B has a structure that does not include the first flange 81 and the spring 86 in the endoscope-side connector receiver 72 of FIG. 4A, and includes an optical fiber 73 that extends forward from the holding member 76.
  • the second flange 82 is fixed so as to pass through the center hole of the second flange 82, and the second flange 82 is rigidly fixed to the cylindrical member 85.
  • the ferrule 83 is also rigidly fixed to the cylindrical member 85.
  • Other configurations are the same as those of the endoscope connector 4 shown in FIG. 4A and the like. Further, the endoscope connector 4B shown in FIG.
  • the endoscope connector 4C of the second modified example shown in FIG. 7 is obtained by sharing the flanges 75 and 82 into one flange (82 in FIG. 7) in the endoscope connector 4B shown in FIG.
  • the member between 75 and 82 is deleted.
  • the holding member 76, the ferrules 74 b and 83, and the base end side portion disposed on the outer peripheral side of the ferrule 83 in the cylindrical member 85 are deleted.
  • the cost of the endoscope connector 4C can be reduced.
  • a light source unit 21 that forms a light source device that emits illumination light that illuminates a subject and a control unit 22 that has a function of generating an image are provided in the main body device 3.
  • the light source unit 21 or the light source device may be provided outside the main body device 3.
  • a plurality of the illumination-side connector receiver 25, the endoscope connector 4, the contact-type illumination-side connector 16A, and the non-contact-type illumination-side connector 16B in the light source device 3 are provided. The inclusion may be defined as the endoscope connector of the present invention.

Abstract

L'invention concerne un raccord pour endoscopes, ayant : une partie d'ajustement côté source de lumière qui s'adapte de manière amovible dans un dispositif de source de lumière ayant une extrémité d'émission qui émet la lumière d'éclairage à laquelle sera exposé un sujet ; une partie d'incidence où entre la lumière d'éclairage depuis le dispositif de source de lumière dans un état ajusté ; une partie de transmission qui transmet la lumière d'éclairage qui a pénétré dans la partie d'incidence; une partie d'ajustement côté endoscope dans laquelle un endoscope ayant une extrémité d'incidence où pénètre la lumière d'éclairage s'ajuste de manière amovible ; et une partie d'émission qui émet la lumière d'éclairage transmise par la partie de transmission à l'extrémité d'incidence de l'endoscope dans un état ajusté ; et dans la partie d'ajustement correspondant à l'une de la partie d'incidence et la partie d'émission, un mécanisme de retenue qui exerce une retenue mobile dans la direction de l'axe optique de la lumière d'éclairage ou dans une direction perpendiculaire qui est perpendiculaire à la direction de l'axe optique.
PCT/JP2016/054456 2015-04-30 2016-02-16 Raccord pour endoscope WO2016174896A1 (fr)

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JP2015093368 2015-04-30

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109528147A (zh) * 2019-01-14 2019-03-29 聚品(上海)生物科技有限公司 用于超细电子内窥镜系统的杆状光电插头及光电联接座
WO2020080450A1 (fr) * 2018-10-18 2020-04-23 カイロス株式会社 Dispositif d'endoscope et système d'endoscope
CN112367899A (zh) * 2018-07-09 2021-02-12 奥林巴斯株式会社 内窥镜用光源装置和内窥镜

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012143414A (ja) * 2011-01-12 2012-08-02 Fujifilm Corp 内視鏡装置
WO2013114703A1 (fr) * 2012-01-31 2013-08-08 オリンパスメディカルシステムズ株式会社 Endoscope
JP2014076097A (ja) * 2012-10-09 2014-05-01 Fujifilm Corp 光ファイバの接続構造及び内視鏡システム

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012143414A (ja) * 2011-01-12 2012-08-02 Fujifilm Corp 内視鏡装置
WO2013114703A1 (fr) * 2012-01-31 2013-08-08 オリンパスメディカルシステムズ株式会社 Endoscope
JP2014076097A (ja) * 2012-10-09 2014-05-01 Fujifilm Corp 光ファイバの接続構造及び内視鏡システム

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112367899A (zh) * 2018-07-09 2021-02-12 奥林巴斯株式会社 内窥镜用光源装置和内窥镜
CN112367899B (zh) * 2018-07-09 2024-03-19 奥林巴斯株式会社 内窥镜用光源装置、内窥镜和内窥镜系统
WO2020080450A1 (fr) * 2018-10-18 2020-04-23 カイロス株式会社 Dispositif d'endoscope et système d'endoscope
CN109528147A (zh) * 2019-01-14 2019-03-29 聚品(上海)生物科技有限公司 用于超细电子内窥镜系统的杆状光电插头及光电联接座
CN109528147B (zh) * 2019-01-14 2023-11-21 爱尔博微视(上海)医疗科技有限公司 用于超细电子内窥镜系统的杆状光电插头及光电联接座

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