WO2005032356A1 - 内視鏡 - Google Patents
内視鏡 Download PDFInfo
- Publication number
- WO2005032356A1 WO2005032356A1 PCT/JP2004/014617 JP2004014617W WO2005032356A1 WO 2005032356 A1 WO2005032356 A1 WO 2005032356A1 JP 2004014617 W JP2004014617 W JP 2004014617W WO 2005032356 A1 WO2005032356 A1 WO 2005032356A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tip
- endoscope
- adapter
- disposed
- heat
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00174—Optical arrangements characterised by the viewing angles
- A61B1/00177—Optical arrangements characterised by the viewing angles for 90 degrees side-viewing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
- A61B1/053—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion being detachable
-
- 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
- A61B1/0607—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 for annular illumination
-
- 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
- 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
- A61B1/0684—Endoscope light sources using light emitting diodes [LED]
-
- 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
- A61B1/12—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 cooling or rinsing arrangements
- A61B1/128—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 cooling or rinsing arrangements provided with means for regulating temperature
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- 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
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
- G02B23/2484—Arrangements in relation to a camera or imaging device
Definitions
- the present invention relates to an endoscope using a light emitting element in an illumination optical system, and an endoscope to which a tip adapter using a light emitting element is attached to an illumination optical system.
- endoscopes are widely used in the medical field and the industrial field.
- the object of diagnosis or examination is in vivo, in a plant, or the like.
- the endoscope needs a light source for illuminating the observation target.
- a light source apparatus is prepared as an external apparatus of the endoscope. Illumination light emitted by the light source device is supplied to a light guide provided in the endoscope. The illumination light supplied to the light guide is transmitted by the light guide and emitted from the illumination window disposed at the tip of the insertion portion to illuminate the observation site.
- an endoscope provided with LED illumination at the tip of the insertion portion has also been proposed.
- the observation site is directly illuminated with light emitted by LED illumination.
- the observation site illuminated by the LED light is imaged by the solid-state imaging device. From this point of view, it is possible to realize high performance with a simple configuration with a narrow diameter of the insertion portion of the endoscope.
- Japanese Patent Application Laid-Open No. 2002-51971 shows an endoscope aiming to increase the amount of illumination light of LED illumination which is illumination means disposed at the distal end portion of the insertion portion.
- a tip adapter that converts optical characteristics such as the viewing direction and the viewing angle according to the observation purpose at the tip of the insertion portion. It is known to attach. That is, by attaching the distal end adapter to the distal end portion of the insertion portion, various observations can be performed with one endoscope. Therefore, usability can be improved by providing the LED illumination on the tip adapter.
- the tip end main body is molded of heat dissipating ceramic, so that the heat generated by the LED lighting decreases in volume and It is conducted to the small tip body with small surface area. Then, the tip body becomes hot, and the LED lighting is exposed to high temperatures, which degrades the performance of the LED lighting. Specifically, a large amount of current can not flow, which makes it difficult to ensure brightness and causes a problem that long-term use becomes difficult.
- the heat of the tip body that has become high temperature is conducted to the CCD, the temperature of the CCD may be raised, which may cause a problem such as noise in the endoscopic image.
- the present invention has been made in view of the above circumstances, and prevents the decrease in the amount of illumination light and the generation of image noise, which are generated by the heat generated by the LED illumination disposed at the distal end of the insertion portion. Aims to provide an endoscope that can perform good observation for a long time
- the objective of the present invention is to provide an endoscope that can prevent the occurrence of the problem and perform a good observation for a long time.
- the endoscope of the present invention is a light emitting element disposed at the tip of the endoscope insertion portion, and is elongated, and one end is disposed in the vicinity of the light emitting element, and the other end is the above At least one heat dissipation member disposed at a predetermined position on the rear side of the endoscope insertion portion.
- a light emitting element constituting an illumination optical system which is detachably attached to an insertion part provided with an imaging device constituting an observation optical system at the tip part and the tip part of the insertion part
- a light emitting element substrate provided with the first electrical connection portion for the light emitting element on the other side, and a tip adapter provided with an objective optical system constituting the observation optical system.
- FIG. 1 A view of the distal end of the insertion portion as viewed from the front [Fig. 2] II sectional view of Fig. 1
- FIG. 7 VII-VII line sectional view of FIG.
- FIG. 8 A sectional view taken along line VIII-VIII in FIG.
- FIG. 12 A sectional view for explaining the configuration in the vicinity of the front cap to which the integral part on the rear end side of the bundle wire member is joined.
- FIG. 13 A sectional view taken along line XIII-XIII in FIG.
- FIG. 14 XIV line sectional view of FIG. 12
- FIG. 16 XVI--XVI line sectional view of FIG.
- FIG. 17 A sectional view taken along line XVII-XVII of FIG.
- FIG. 18 A sectional view taken along line XVIII-XVIII in FIG.
- FIG. 20 A cross-sectional view taken along the line XX—in FIG.
- FIG. 21 A cross-sectional view taken along line XXI in FIG.
- FIG. 22 XXII—XXII sectional view in FIG. 20
- FIG. 23 A longitudinal sectional view showing another configuration of the rigid endoscope
- FIG. 24 XXIV-XXIV sectional view in FIG.
- FIG. 25 XXV line XXV sectional view of FIG.
- FIG. 28 The XXVIII-XXVIII sectional view taken on the line of FIG. [FIG. 29] XXIX-XXIX line sectional view of FIG. 28
- FIG. 30 A sectional view taken along the line XXX--XXX of FIG.
- FIG. 32 A sectional view taken along line XXXII-XXXII of FIG.
- FIG. 33 A sectional view taken along line XXXIII-XXXIII of FIG.
- FIG. 34 A sectional view taken along line XXXIV-XXXIV of FIG.
- FIG. 35 A sectional view taken along the line XXXV-XXXV in FIG.
- FIG. 36 The direct-viewing tip adapter shown in the XXXVI—XXXVI line sectional view of FIG. 27 and the XXX of FIG.
- FIG. 38 A sectional view taken along line XXXVIII-XXXVIII of FIG.
- FIG. 47 A diagram for explaining a direct-view type tip adapter provided with a radiation-shaped plate member provided with a plurality of LED lights.
- FIG. 48 A diagram for explaining a direct-viewing tip adapter in a state in which a radiation-shaped plate member provided with a plurality of LED lights is expanded.
- FIG. 50 A sectional view taken along line L of FIG. 49
- FIG. 51 LI line sectional view of FIG. 49
- the endoscope 1 of the present embodiment has an elongated insertion portion 2.
- the insertion portion 2 is configured by connecting the hard tip portion 3, the bending portion 4 and the flexible tube portion 5 in order from the tip side.
- the bending portion 4 connects the bending pieces and bends in, for example, the upper, lower, left, and right directions.
- the flexible tube 5 is formed of a flexible tubular member.
- An LE configured by disposing a plurality of light emitting elements, for example, LED chips 6, on the tip 3
- observation optical unit configured by arranging a plurality of optical lenses 8a, CCD 9 and the like
- the distal end portion 3 has an objective optical system receiver (hereinafter abbreviated as an objective receiver) 11, an LED substrate 12 which is a light emitting element substrate, a lens frame receiver 13, a first connecting tube 14, a second connecting tube 15, Mainly composed of a cover glass 16 and a connection fixing member 17.
- an objective optical system receiver hereinafter abbreviated as an objective receiver
- LED substrate 12 which is a light emitting element substrate
- lens frame receiver 13 a first connecting tube 14
- a second connecting tube 15 Mainly composed of a cover glass 16 and a connection fixing member 17.
- the objective receiver 11 and the LED substrate 12 are formed of a metal member with high thermal conductivity such as copper, aluminum or the like.
- the first connecting pipe 14, the second connecting pipe 15, and the connecting and fixing member 17 which constitute the exterior of the lens frame receiver 13 and the endoscope 1 are excellent in corrosion resistance such as stainless steel and have low thermal conductivity, metal It is formed of a member.
- a part of the optical lens 8a constituting the observation optical unit 10 is fixed to the objective receiver 11, and the other optical lenses 8a and the CCD 9 are fixed to the lens frame 9a.
- a terminal 9 b extending from the CCD 9 to the proximal side is electrically connected to the CCD substrate 9 c.
- a signal line 9e passing through the signal cable 9d is electrically connected to a predetermined position of the CCD substrate 9c.
- the lens frame 9a is made of, for example, stainless steel or the like, which is excellent in corrosion resistance and low in thermal conductivity, and is a metal member !.
- the LED lighting unit 7 is composed of the LED chip 6 and the LED substrate 12.
- the LED substrate 12 is annular, and for example, eight countersunk holes 12a are provided at predetermined intervals on the circumference of a predetermined distance from the center.
- the LED chip 6 is in the counterbore 12a Placed in The irradiation direction side of the LED chip 6 is covered with a translucent sealant 6a.
- a pair of notch portions 12b for arranging power supply cables 22a and 22b for supplying power is formed on the inner circumferential surface side of the LED substrate 12.
- the LED board 12 is provided with a conductive pattern (not shown) with which the power supply cables 22a and 22b and the electrical contacts (not shown) of the LED chips 6 are in electrical contact.
- the objective receiver 11 has a substantially cylindrical shape, and the optical lens 8a of the observation optical unit 10 is disposed on the tip end face side and the base end face side of the central portion. ib is formed.
- the predetermined number is formed at predetermined intervals so as to correspond to 12 a.
- a pair of cable through holes 1 Id through which the power supply cables 22a and 22b pass are formed at predetermined positions around the recess l ib.
- the bundle wire member 21 is formed in consideration of flexibility by bundling a plurality of strands 21a having a wire diameter of 0.1 mm or less, such as copper wires, aluminum wires, silver wires, etc., which have high thermal conductivity, such as It is
- the number and length dimensions of the strands 21a are appropriately set in accordance with the type of endoscope in consideration of both heat capacity and workability.
- the distal end portion and the end portion of the bundle wire member 21 are configured as one-piece integral part 23 by, for example, solder, brazing, an adhesive or the like in consideration of workability.
- integral portions 23 there are eight integral portions 23 disposed on the distal end side, and the distal end surface of each distal end portion is planarized by polishing, etc.
- integral parts 23 there are four integral parts 23 disposed on the rear side.
- the recess 11a and the recess l ib communicate with each other through, for example, a tapered hole 11e having a large diameter at the tip end side.
- the lens frame receiver 13 is substantially cylindrical. At a predetermined position in the middle of the outer peripheral surface of the lens frame receiver 13, a male screw portion 13a is formed to be screwed with a female screw portion (reference numeral 17b in the figure) formed on the connecting and fixing member 17. Also, the lens frame holder 13 A lens frame through hole 13b in which a lens frame 9a constituting the observation optical unit 10 is disposed is formed at the center on the tip side.
- a through hole 13c through which the heat dissipating member is inserted is disposed so as to be inserted in a loosely fitted state and the bundle of wire members 21 is opposed to the through hole 11c for disposing the heat dissipating member.
- the first connection pipe 14 is tubular, and includes a large diameter portion 14a and a small diameter portion 14b.
- the lens frame receiver 13 and the second connection pipe 15 are integrally disposed. Specifically, the base end of the lens frame receiver 13 is integrally disposed on the inner peripheral surface on the tip side of the large diameter portion 14a of the first connection pipe 14, and the second connection pipe 15 is formed on the outer peripheral surface of the small diameter portion 14b.
- the tip side inner circumferential surface of the is integrally disposed.
- the second connection pipe 15 is substantially tubular, and the first connection pipe 14 and the bending portion 4 are integrally disposed. Specifically, the outer peripheral surface of the small diameter portion of the first connection pipe 14 is disposed on the inner peripheral surface on the front end side of the second connection pipe 15, and the distal end curve constituting the bending portion 4 at a predetermined position of the base end. A piece 4a, a bending rubber 4b, and an outer blade 4c are disposed. The curved rubber 4 b and the outer blade 4 c are integrally fixed to the second connection pipe 15 by the thread winding fixing portion 31.
- Reference numeral 4d is a downward bending wire
- reference numeral 4e is a leftward bending wire
- reference numeral 4f is an upward bending wire
- reference numeral 4g is a rightward bending wire.
- the cover glass 16 is formed of, for example, a substantially annular flat plate optical member, and a through hole 16a corresponding to the tip of the objective receiver 11 is formed in the center.
- the connecting and fixing member 17 has a substantially tubular shape, and a claw portion 17a that abuts on the distal end surface of the cover glass 16 is formed circumferentially at the distal end portion, and is formed on the lens frame receiver 13 at the proximal end portion.
- a female screw portion 17b to be screwed to the male screw portion 13a is formed.
- eight bundle members 21 respectively have a through hole 1lc for disposing a heat radiating member, an objective receiver 11, a first connecting pipe 14 and a second connecting pipe 15 It is inserted and extends backward.
- the eight bundle members 21 extended to the rear side are arranged in the vicinity of the bending portion 4 such that the adjacent bundle members 21 are combined into one to correspond to the bending direction and the space in the pipe of the curved piece.
- the bundle wire member 21 is used.
- the four bundle members 21 are disposed in the flexible tube portion 5 through the inside of the curved portion 4.
- the length dimensions of the four bundle members 21 inserted and arranged in the flexible tube portion 5 are set to different length dimensions.
- the flexible tube 5 comprises a helical tube 5a disposed on the inner peripheral surface side, a reticular tube 5b covering the helical tube 5a, and an outer tube 5c covering the reticular tube 5b. ing.
- a front cap 5 d is disposed on the distal end side of the flexible tube 5.
- the front mouth ring 5 d is disposed on the inner peripheral surface side of the third connection pipe 18 which constitutes the base end of the curved portion 4.
- Reference numeral 24 denotes a coil member through which the bending wires 4d, 4e, 4f and 4g pass.
- the coil member 24 is integrally joined by brazing 25 at a predetermined position on the inner peripheral surface of the front mouth ring 5d.
- a silicone grease 19 having a high thermal conductivity is applied to the inner peripheral surface of the LED substrate 12 constituting the LED lighting unit 7.
- the objective receiver 11 in which the optical lens 8 a is disposed is disposed on the inner peripheral surface of the LED substrate 12.
- the integral part 23 on the tip end side of the bundle wire member 21 configured by bundling a predetermined number of strands 21 a in the heat dissipation member disposition through hole 11 c formed in the objective receptacle 11 is used for heat dissipation member placement.
- the end face of the integral part 23 is brought into close contact with the base end face of the LED substrate 12 via the silicone grease 19 and integrally fixed by soldering.
- the power supply cables 22a and 22b extending from the LED substrate 12 are disposed in the notch 12b.
- the LED substrate 12 and the objective receiver 11 are brought into close contact with each other via the silicone grease 19, and the bundle wire member 21 is placed in close contact with the objective receiver 11 through solder.
- a filler having a high thermal conductivity, a thermally conductive sheet, a thermally conductive film, etc. may be used.
- the cover glass 16 is disposed on the tip side of the LED substrate 12, and the tip of the lens frame receiver 13 is inserted and disposed in the recess on the base end side of the objective receiver 11.
- the bundle wire members 21 are respectively inserted into the corresponding through holes 13c for heat radiation member penetration.
- the connecting and fixing member 17 is put on the outer peripheral surface side in the order of the cover glass 16, the LED substrate 12, and the objective receiver 11. Then, the tip end surface of the connecting and fixing member 17 reaches the vicinity of the male screw portion 13 a formed on the lens frame receiver 13.
- the female screw portion 17b formed in the connecting and fixing member 17 is screwed to the male screw portion 13a.
- the connection fixing member 17 and the lens frame receiver 13 are integrally fixed in a predetermined screwed state.
- the cover glass 16 is in close contact with the sealing agent 6 a by a predetermined pressing force
- the LED substrate 12 and the objective receiver 11 are in close contact by a predetermined pressing force. It is configured as an integrated unit.
- the lens frame 9a in which the CCD 9 and the like are disposed is fixedly joined to the integral unit, and the curved portion 4 is integrally connected and fixed via the first connection pipe 14 and the second connection pipe 15.
- the endoscope 1 is thus configured.
- the LED lighting unit 7 First, power is supplied to the LED lighting unit 7 through the power supply cables 22a and 22b.
- the LED chip 6 disposed on the LED substrate 12 is in a light emitting state.
- the observation site is illuminated, and an optical image of the illuminated observation site passes through the optical lens 8a of the observation optical unit 10 and forms an image on the imaging surface of the CCD 9 to obtain an endoscopic image.
- the insertion section 2 of the endoscope 1 is inserted toward the target observation site.
- a bending operation means (not shown) is appropriately operated to bend the bending portion 4 in a desired direction. Since the bundle of wire members 21 considering flexibility is divided and disposed in the bending portion 4 in consideration of the bending direction, the bending portion 4 smoothly bends.
- the heat generated from the LED chip 6 is gradually conducted to the LED substrate 12.
- the temperature of the LED substrate 12 gradually rises.
- the heat conducted to the LED substrate 12 is conducted to the bundle wire member 21 in close contact with the rear surface of the LED substrate 12 via the silicone grease 19 and the objective receiver disposed on the rear surface side of the LED substrate 12 Conducted to 11
- the heat conducted to the objective receiver 11 is in close contact with the inner peripheral surface of the through hole 11c for disposing a heat radiating member formed in the objective receiver 11 via a solder, and the side surface force bundle member 21 Conducted to Then, the heat conducted to the bundle members 21 is conducted from the tip side to the rear side.
- the heat generated by the LED chip is conducted to the distal end side of the elongated bundle wire member through the LED substrate and the objective receiver, thereby preventing the LED lighting section from becoming hot. It is possible to reliably prevent the heat generated by the LED chip from being conducted to the CCD. As a result, the observation site is illuminated for a long time with a desired amount of light, and a good endoscopic image without image noise can be obtained, and endoscopic observation can be performed.
- the cover glass 16 is formed of a flat plate optical member, the cover glass is not limited to this form, and for example, as shown in FIG. It may be a cover glass 16A formed on a convex surface, or a cover glass 16B formed on a concave end surface as shown in FIG.
- the LED substrate 12 and the objective receiver 11 may be integrally configured.
- the integral part 23 on the rear side of the bundle wire member 21 is A cooling fin 41 is provided, and may be integrally joined and fixed to a predetermined position on the inner peripheral surface of the front base 40 by a bonding member such as solder 42 respectively.
- the heat conducted to the bundle wire member 21 can be efficiently discharged from the front base 40 to the outside, and the heat radiation effect of the bundle wire member 21 can be significantly improved.
- the bundling members 21 may be configured in a strand or net shape.
- FIGS. 15 to 18 A second embodiment of the present invention will be described with reference to FIGS. 15 to 18.
- the objective receiver 11 formed of a high thermal conductivity such as copper or aluminum, and formed of a metal member is a metal member having a low thermal conductivity. It is divided into an objective frame 51 formed and an LED receiver 52 formed of a metal member with high thermal conductivity.
- a ring member 53 is disposed at the proximal end of the LED receiver 52, and a tubular fixing member 54 is further disposed on the outer peripheral surface side of the ring member 53.
- a covering member 55 is further provided, which further covers the sealant 6 a covering the LED chip 6.
- notches 52a for arranging the bundle wire members 21 are formed at predetermined positions on the outer peripheral surface side of the LED receiver 52.
- a first male screw 54a and a second male screw 54b which are double screws, are formed.
- a female screw portion 56a formed at the proximal end of the substantially tubular connection / fixing member 56 is screwed to the male screw portions 54a and 54b. Consolidated At the tip of the fixed member 56, there is provided a claw 56b that abuts on the covering member 55.
- a silicone grease having high thermal conductivity is applied to the base end face of the LED substrate 12 constituting the LED lighting unit 7.
- the objective frame 51 on which the optical lens 8a is disposed and the LED receiver 52 are disposed at predetermined positions.
- the bundle of wire members 21 divided into four through the opening formed by the LED receiver 52 and the ring member 53 is disposed in the notch 52a.
- a solder or an adhesive is poured from the side of the cutout 52a into the notch opening to tightly fix the bundle wire member 21 to the LED receiver 52.
- the LED substrate 12 and the objective frame 51 are brought into close contact with each other via silicone grease, and the bundle wire member 21 is placed in close contact with the LED receiver 52, for example, through solder.
- the tubular fixing member 54 is disposed on the outer peripheral surface side of the ring member 53.
- the connection fixing member 56 is placed on the outer peripheral surface side of the LED substrate 12, the LED receiver 52 and the ring member 53 in this order.
- the distal end surface of the connecting and fixing member 56 reaches the vicinity of the first male screw 54 a formed on the tubular fixing member 54.
- the first male screw 54a of the tubular fixing member 54 and the female screw 56a formed on the connecting fixing member 56 are screwed together.
- the female screw 56a passes through the first male screw 54a, the end face of the connecting and fixing member 56 reaches the vicinity of the second male screw 54b.
- the female screw 56a is screwed into the second male screw 54b.
- the female screw portion 56a and the second male screw portion 54b are screwed together, and the connection fixing member 56 and the tubular fixing member 54 are integrally fixed.
- the lens frame 9a having the CCD 9 etc. disposed thereon is fixedly joined to this integral unit, and the curved portion 4 is integrally connected and fixed via the first connecting pipe 14 and the second connecting pipe 15. Configure the endoscope 1.
- the lens frame 9a may be joined to the lens frame receiver 13 before the LED receiver 52 and the objective receiver 11 are integrated.
- the other configuration and operation are the same as in the first embodiment.
- the same reference numerals are given to the same members and the description is omitted.
- the bundle wire member is disposed in the LED receiver provided with the notch portion, and in this state, the solder is poured from the opening side of the notch portion to integrally join the bundle wire member to the LED receiver.
- the workability can be improved by eliminating the pre-processing such as planarizing the tip end surface of the bundle wire member in advance.
- connection fixing member and the tubular fixing member are screwed and fixed by the double screw, it is possible to more reliably prevent the connection fixing member and the tubular fixing member from falling off.
- the other effects are the same as in the first embodiment.
- the LED receiver 52 and the LED substrate 12 may be integrally configured.
- a third embodiment of the present invention will be described with reference to FIGS. 19 to 22.
- the endoscope according to the present embodiment is a rigid endoscope 60 in which a rigid tube 61 having a predetermined length is disposed instead of continuously arranging the bending portion 4 at the tip end.
- the female screw portion 17b of the connecting and fixing member 17 is formed on the distal end side of the rigid tube 61 so as to arrange the lens frame receiver 13, the first connecting pipe 14, the second connecting pipe 15 and the like. ! It is configured to be screwed to the male screw part 6 la.
- the bundle wire member 21 instead of arranging the bundle wire member 21 as a heat dissipation member, it is elongated and formed in a predetermined cross-sectional shape by a member having high thermal conductivity such as copper or aluminum, silver, carbon graphite or the like.
- a plurality of rod-like members 62 set to a predetermined length dimension are arranged at predetermined positions.
- the other configuration is substantially the same as that of the first embodiment.
- a rod-shaped member through hole 61b, a lens frame through hole 61c, and the like are formed in the hard tube 61.
- heat emanating from the LED chip is disposed by disposing a hard heat dissipating member.
- the tip side force of the rod-like member can be conducted to the rear side through the LED substrate and the objective receptacle to prevent the LED lighting section from becoming hot, and the heat generated from the LED chip can be conducted to the CCD You can certainly prevent that.
- FIGS. 23 to 25 are diagrams for explaining another configuration of the rigid endoscope, and as shown in these figures, the rigid endoscope 60A has the same objective as that shown in FIGS. 15 and 17.
- Provide frame 51 At the same time, an LED receiver 63 having a substantially cylindrical shape, an elongated shape and a predetermined length dimension is disposed and configured.
- FIGS. 26 to 55 A fourth embodiment of the present invention will be described with reference to FIGS. 26 to 55.
- the endoscope 101 of the present embodiment has an elongated insertion portion 102.
- the insertion portion 102 is configured by connecting a hard tip portion 106, a bending portion 107, and a flexible tube portion 108 in order from the tip side.
- the bending portion 107 connects the bending pieces and is configured to bend, for example, in the up, down, left, and right directions.
- Flexible tube 108 is formed of a flexible tubular member.
- a direct-view type tip adapter 103 provided with a direct-view objective optical system in which the observation range is set in the longitudinal axis direction of the insertion portion at the distal end portion 106 or the observation range is orthogonal to the longitudinal axis direction of the insertion portion
- a side-viewing tip adapter 104 or the like provided with a side-viewing objective optical system set in a direction is selectively and detachably disposed!
- the configuration of the direct-viewing tip adapter 103 will be described with reference to FIGS. 27 to 30.
- the direct-viewing tip adapter 103 includes an adapter main body 111, an objective optical portion 112, an LED board 113, an adapter terminal 114, a main body auxiliary member 115, a cover member 116, and an adapter side attachment / detachment member (hereinafter referred to as a ring). It is mainly comprised by 117 and abbreviated members.
- the adapter main body 111 is a first heat conducting member, and is formed of a metal member such as copper or aluminum having a high thermal conductivity.
- the adapter main body 111 is a tubular member having a substantially convex cross-sectional shape. That is, the small diameter portion 11 la and the large diameter portion 11 lb are formed in the adapter main body 111, and a stepped central through hole 111c is formed substantially at the center.
- the terminal holes 11 Id for arranging the adapter terminals 114 are formed in pairs.
- the objective optical unit 112 is configured by, for example, arranging a plurality of optical lenses 112a, 112b and 112c in the central through hole 111c! Scold.
- the LED substrate 113 is, for example, an aluminum disc having a central through hole, and a conductive pattern (not shown) is formed on one surface side of the LED substrate 113. On the conductive pattern, one end portions of a plurality of light emitting elements, for example, a plurality of LED lights 118 and an adapter terminal 114 are disposed.
- the LED substrate 113 is disposed to be in close contact with the small diameter portion 11 la. For example, eight LED lights 118 are arranged at predetermined intervals on the circumference of a predetermined distance of the central force. L
- the irradiation direction side of the ED illumination 118 is covered with a translucent sealant 118a.
- the adapter terminals 114 are a pair of metal members constituting a first electrical connection portion. One end portion side of the adapter terminal 114 is electrically connected on the conductive pattern, and the other end portion side is formed as a resilient contact portion 114c by forming a cutout portion. The elastic contact portion 114 c protrudes substantially perpendicularly from the other surface side of the LED substrate 113.
- the adapter terminal 114a on one side is a terminal on the power supply side
- the adapter terminal 114b on the other side is a terminal on the far side.
- the main-body auxiliary member 115 is a stepped tubular member configured of a small diameter portion 115a and a large diameter portion 115b, and the small diameter portion 115a is disposed at the large diameter portion 11 lb. .
- the end of the small diameter portion 115a is provided with a claw portion 115c, and the large diameter portion 115b is formed with a concave portion 115e corresponding to the claw portion 115c. That is, the main body auxiliary member 115 is integrally held by the adapter main body 111 by caulking the claw portion 115c and arranging the claw portion 115c in the recessed portion 115e.
- the cover member 116 is a support member. Specifically, the LED substrate 113 is supported by the adapter body 111 by arranging the cover member 116.
- the ring member 117 is rotatably disposed with respect to the main body auxiliary member 115. Ring member
- a female screw portion 117a is formed on the inner peripheral surface of the portion 117. Further, the ring member 117 is provided with a bent portion 117b which is disposed in contact with the step portion constituted by the small diameter portion 115a and the large diameter portion 115b of the main body auxiliary member 115.
- Reference numerals 119 and 119a denote insulating sealing resins.
- the sealing resin 119 covers the periphery of the adapter terminals 114a and 114b and is filled in the terminal holes l l l d. Therefore, the adapter terminal 114 and the sealing resin 119 are integrally formed by, for example, insert molding.
- the tip portion 106 has an objective optical system receiver (hereinafter abbreviated as an objective receiver) 120, a first connecting pipe 121, a second connecting pipe 122, a third connecting pipe 123, an observation optical unit 124, a lens frame 125, and a total frame.
- An imaging device 127, an insertion portion terminal 128, and a side wire member 129 are mainly configured.
- the objective receiver 120 is a second heat conducting member, which has a high thermal conductivity! For example, gold such as copper, aluminum, etc. It is formed of a generic member.
- the objective receiver 120 is a tubular member having a substantially convex cross-sectional shape. That is, the small diameter portion 120a and the large diameter portion 120b are formed in the objective receiver 120, and the central through hole 120c is formed substantially at the center.
- a pair of terminal holes 120d for arranging the insertion portion terminals 128a and 128b electrically connected to the adapter terminals 114a and 114b are formed.
- a predetermined number of heat dissipation member disposition holes 120e are formed at predetermined intervals.
- a side wire member 129 which is a heat dissipation member for dissipating the heat conducted to the objective receptacle 120 is disposed.
- the side wire member 129 is formed by bundling a plurality of strands 129a having a wire diameter of 0.1 mm or less, such as copper wire, aluminum wire, silver wire, etc., which have high thermal conductivity, in consideration of flexibility.
- the number of strands 129a and the length dimension are appropriately set according to the type of endoscope in consideration of both heat capacity and workability.
- the distal end portion and the end portion of the side wire member 129 are configured as a one-piece integral part by, for example, solder, brazing, an adhesive or the like in consideration of workability.
- eight integral parts disposed in the heat dissipation member disposition hole 120 e are formed.
- the first connection pipe 121, the second connection pipe 122, and the third connection pipe 123 are formed of a metal member which is excellent in corrosion resistance such as stainless steel and has a low thermal conductivity.
- a male screw portion 121a to be screwed with the female screw portion 117a of the ring member 117 is formed.
- the second connection pipe 122 is tubular and has a large diameter part 122a and a small diameter part 122b, and the first connection pipe 121 and the third connection pipe 123 are integrally disposed. Specifically, the proximal end inner peripheral surface of the first connection pipe 121 is externally fitted on the distal end side outer peripheral surface of the large diameter portion 122a of the second connection pipe 122, and the third connection is formed on the outer peripheral surface of the small diameter portion 122b. The tip side inner circumferential surface of the tube 123 is externally fitted.
- the third connection pipe 123 is substantially tubular, and the second connection pipe 122 and the bending portion 107 are integrally disposed. Specifically, the small diameter portion outer peripheral surface of the second connection pipe 122 is internally fitted on the inner peripheral surface on the front end side of the third connection pipe 123, and the distal end bending piece constituting the bending portion 107 at a predetermined position of the proximal end.
- 105a, curved rubber 105b, and outer blade 105c are arranged.
- the curved rubber 105 b and the outer blade 105 c are integrally fixed to the third connection pipe 123 by the thread winding fixing portion 105 d.
- Reference numeral 105 e denotes a downward bending wire
- reference numeral 105 f denotes an upward bending wire.
- the observation optical unit 124 includes, for example, optical lenses 124a, 124b, and 124c. Les Optical lenses 124 a, 124 b and 124 c are fixedly arranged on the lens frame 125.
- a cover glass 127b which is configured of the lens frame 125, the CCD 127a, and the like, and which constitutes the imaging device 127, is fixedly disposed.
- a signal line 131 passing through the inside of the signal cable 130 is electrically connected to a predetermined position at the terminal 127c of the proximal end side of the CCD 127a and the terminal 127c extends!
- the total frame 126 is integrally fixed to the objective receiver 120 by a fastening screw 135.
- the lens frame 125 and the total frame 126 are made of a metal member such as stainless steel or the like which is excellent in corrosion resistance and low in thermal conductivity!
- Insertion portion terminals 128a and 128b are metal members constituting the second electrical connection portion and are elongated, and become an electrical connection portion with the elastic contact portion 114c of the adapter terminals 114a and 114b on the tip end side.
- a distal end side recess 128 c is provided, and power cables 132 and 133 for supplying power to the LED lighting 118 are electrically connected to the proximal end portion, respectively.
- Reference numerals 134a and 134b denote insulating members. The insulating members 134a and 134b are disposed around the punched-in terminals 128a and 128b.
- the eight side wire members 129 extending rearward are flexible through the inside of the bending portion 107 by bringing the side wire members 129 adjacent to each other in the vicinity of the bending portion 107 together. It is disposed within the tube 108.
- the flexible tube 108 is composed of a helical tube (not shown) disposed on the inner peripheral surface side, a reticular tube (not shown) covering the helical tube, and an outer tube (not shown) covering the reticular tube. It is configured.
- Reference numeral 136 is an O-ring. The O-ring 136 provides water tightness between the direct view tip adapter 103 and the tip 106 of the wedge portion 102.
- positioning pins 141 are arranged on a main body auxiliary member 115 constituting the direct view type tip adapter 103. Further, a positioning groove 142 in which a positioning pin 141 is disposed is formed in the objective receiver 120 which constitutes the distal end portion 106 of the insertion portion 102.
- a notch 143 corresponding to the positioning groove 142 is formed at a predetermined position of the first connection pipe 121.
- the direct-view type tip adapter 103 When assembling the direct-view type tip adapter 103 to the tip portion 106, first, the direct-view type tip adapter The external thread portion 117a formed on the end side of the ring member 117 constituting the sleeve 103! The external thread portion 12 la formed on the first connection pipe 121 constituting the distal end portion 106! Let them face each other. Then, after the female screw portion 117a and the male screw portion 121a are screwed together, the ring member 117 is rotated in a predetermined direction. Then, the female screw portion 117a passes through the male screw portion 121a, and the direct-view type front end adapter 103 is loosely fitted to the front end portion 106.
- the positioning pin 141 provided on the direct-view type tip adapter 103 and the positioning groove 142 formed on the tip portion 106 are set in a positional relationship facing each other. Then, the positioning pin 141 is disposed in the positioning groove 142. Then, in this state, the direct-view type tip adapter 103 is slid in the longitudinal axis direction.
- the elastic contact portions 114c of the adapter terminals 114a and 114b are disposed in the front end side recesses 128c of the wedged-in terminals 128a and 128b.
- the direct-view type tip adapter 103 is further slid along the positioning groove 142 in the longitudinal axis direction.
- the elastic contact portions 114c of the adapter terminals 114a and 114b are further disposed at the back side in the tip side recessed portion 128c of the insertion portion terminals 128a and 128b, and the female screw portion 117a faces the male screw portion 12 la. It will be in the state.
- the ring member 117 is rotated in a predetermined direction. Then, in a state in which the female screw portion 117a and the male screw portion 121a are screwed together, the direct-view type tip adapter 103 moves in the longitudinal axis direction. As a result, as shown in FIGS. 37 and 38, the attachment of the direct-viewing tip adapter 103 to the tip 106 is completed.
- the elastic contacts 114c of the adapter terminals 114a and 114b are disposed in a predetermined state in the front end side recess 128c of the wedged-in terminals 128a and 128b. Further, the optical axis of the objective optical unit 112 and the optical axis of the observation optical unit 124 are arranged substantially in alignment. Furthermore, the proximal end surface of the adapter body 111 and the distal end surface of the objective receiver 120 are in contact with each other.
- the heat conducted to the LED substrate 113 is disposed on the adapter body 111 in close contact with the LED substrate 113, the objective receiver 120 closely disposed on the adapter body 111, and the proximal end face side of the objective receiver 120. It is conducted to the side wire member 129 provided. Then, the heat conducted to the side wire member 129 is conducted from the tip side to the rear side and dissipated.
- the heat generated by the LED illumination of the direct-viewing tip adapter is conducted to the LED substrate, the adapter body, the objective receiver, and the tip side force side of the bundle wire member to be radiated and dissipated. This prevents the LED lighting from being exposed to high temperatures.
- the heat generated by the LED lighting is conducted to the CCD by radiating the heat generated by the LED lighting and forming the lens frame and the imaging frame by a metal member having a low thermal conductivity such as stainless steel. It can be reliably prevented that it is done.
- illumination with the LED illumination can be performed with a desired light amount for a long time, and a good endoscopic image free from image noise can be obtained, and endoscopic observation can be performed.
- the positional relationship between the direct-viewing tip adapter and the tip is uniquely set, and Incorrect connection with the adapter terminal can be reliably prevented.
- the elastic contact 114c is in the tip side recess 128c in a state where the electrical connection between the adapter terminal 114 and the insertion portion terminal 128 is fixed. It is done by being placed inside.
- the electrical connection between the adapter terminal 114 and the insertion portion terminal 128 is not limited to the configuration in which the elastic contact 114c is engaged with and disposed in the distal end side recess 128c. It may be configured as shown in FIG.
- conductive rubber 151 is disposed at the base end of adapter terminal 114, and conductive rubber 151 is closely disposed on the flat portion of insertion portion terminal 128 and electrically connected. It is like that.
- a coil panel 152 is provided at the base end of the adapter terminal 114 as biasing means, and a sliding terminal 153 having a curved end face formed by the biasing force of the coil panel 152 is an insertion section terminal 128. It is biased to the flat part and electrically connected!
- a coil panel 154 is provided as a biasing means at the tip end of the insertion portion terminal 128, and the end face is formed into an edge shape like a contact pin by the biasing force of the coil panel 154.
- the movable terminal 155 is biased to be disposed on the flat portion of the adapter terminal 114 and electrically connected.
- a plate panel 156 having a semicircular cross-sectional shape is provided at the base end of the adapter terminal 114 as an electrical contact point having biasing means, and this plate panel 156 is inserted by biasing force. It is arranged to be biased and electrically connected to the flat part of the part terminal 128! /.
- the positive side is configured by a combination of the adapter terminal 114 and the insertion portion terminal 128, and the negative side is electrically connected as a body ground dropped to the adapter main body 111 which is a housing. I have to.
- a configuration example is shown in which, for example, eight LED lights 118 are arranged at predetermined intervals on the circumference of a predetermined distance from the center on the tip surface of the direct view type tip adapter 103.
- the arrangement configuration of the power LED lighting 118 is not limited to this. For example, six LED lightings 118 at predetermined intervals on the circumference of a predetermined distance from the center, as shown in FIGS. 44 to 46 below.
- a direct-viewing tip adapter 103A having a configuration in which a plurality of LEDs are arranged and a direct-viewing tip adapter 103B having a configuration in which, for example, six LED lights 118 are arrayed in two rows at predetermined intervals on the circumference of a predetermined distance.
- a direct-viewing tip adapter 103C or the like having a configuration in which, for example, six innermost sides, ten middle sides, and fourteen outermost LED illuminations 118 are arranged at predetermined intervals on the circumference of a predetermined distance from the center. Even.
- cooling fins 160 are provided on the outer peripheral surface of the cover member 116 to dissipate the heat generated by the LED lighting 118, and then the LE D-lighting 118 is prevented from being exposed to high temperatures.
- a radiation-shaped plate member 161 having a plurality of LED illuminations 118 disposed on the inner surface side may be disposed on the front end side of the cover member 116! ⁇ .
- the radiation-shaped plate member 161 is formed of a shape memory alloy, and when the power is supplied to the LED lighting 118, it is expanded and deformed as shown in FIG. 48, and a large amount of illumination light is used. Illuminate the observation target area.
- the side-viewing tip adapter 104 includes an adapter main body 171, an objective optical portion 172, an LED substrate 113, a pair of adapter terminals 174a and 174b, a main body auxiliary member 115, a cover member 116A, and a restraining member 176. It is mainly composed of a ring member 117, a hemispherical heat conductive member 177, and a columnar heat conductive member 178.
- the adapter main body 171 constitutes one of the first heat conducting members, and is formed of a metal member such as copper or aluminum having high heat conductivity.
- the adapter body 171 is a substantially tubular member in cross section. That is, a central through hole 171a is formed at substantially the center of the adapter body 171.
- the terminal holes 171b for arranging the adapter terminals 174a and 174b are formed in pairs, and the hole 171c in which the columnar heat conducting member 178 is arranged is formed.
- the objective optical unit 172 is configured of a mirror unit 172a that bends the optical axis at, for example, a right angle, and a plurality of optical lenses 172b and 172c disposed in the central through hole 171a.
- the LED substrate 113 is, for example, an aluminum disc having a central through hole, and a conductive pattern is formed on one surface side of the LED substrate 113. On the conductive pattern, one end portions of a plurality of LED illuminations 118 as light emitting elements and adapter terminals 174a and 174b are disposed. The LED substrate 113 is disposed in close contact with the flat surface of the hemispherical heat conductive member 177.
- the adapter terminals 174a and 174b are a pair of metal members constituting a first electrical connection portion. On the other end side of the adapter terminals 174a and 174b, an elastic contact portion 114c having a notch is formed.
- Cover member 116A is a support member formed of a metal member having a low thermal conductivity.
- a concave portion 116a in which the mirror portion 172a is disposed, a spherical concave portion 116b in which the hemispherical heat conductive member 177 is disposed, and a hole portion 116c in which the columnar thermal conductive member 178 is disposed are formed. It is done. Further, a countersink 116d communicating with the spherical recess 116b is also formed.
- screwing fixation is performed to cover member 116 A through through hole 177 a of hemispherical heat conducting member 177 in which pressing member 176 is disposed in spherical recess 116 b by screw 180.
- the hemispherical heat conducting member 177, the LED substrate 113, and the pressing member 176 are disposed on the cover member 116A.
- the hemispherical heat conductive member 177 constitutes one of the first heat conductive members, and is formed of a metal member such as copper or aluminum having a high thermal conductivity.
- the hemispherical heat conductive member 177 is formed with a through hole 177 a through which the screw 180 is disposed.
- the columnar heat conducting member 178 constitutes one of the first heat conducting members and has a high thermal conductivity, for example, copper
- the columnar heat conducting member 178 is disposed in the hole of the cover member 116A.
- the other configuration is the same as that of the direct view type tip adapter 103, and the same reference numerals are given to the same members and the description will be omitted.
- a visual tip adapter can be attached to the tip.
- the elastic contact of the adapter terminal is disposed in a predetermined state in the front end side recess of the insertion portion terminal provided at the front end.
- the heat generated by the LED lighting is actively conducted to the LED substrate, the hemispherical heat conducting member, the columnar heat conducting member, and the adapter main body, and the objective receiver 120 disposed at the tip end is provided. Conducted to the side wire member 129 and dissipated.
- the optical characteristics at the time of observation differ, but the same operation and effect as attaching the direct-viewing tip adapter 103 to the tip portion 106. You can get
- the LED substrate 191 is directly attached to the cover member 116B.
- the heat generated by the LED lighting 118 is disposed through the LED substrate 191, the columnar heat conducting member 178, and the adapter main body 171, and the objective receiver 120 and the side wire member 129 disposed at the tip portion 106.
- the heat may be conducted by conducting heat.
- the LED substrate 191 has a rectangular shape, and a plurality of LED lights 118 are arrayed in the vertical and horizontal directions on one side. As a result, while it is possible to obtain the same heat radiation effect as described above, it is possible to reduce the number of parts and to increase the amount of illumination light.
- the LED substrate 192 is directly disposed on the cover member 116 C, and a space for disposing the mirror portion 172 a is provided on the LED substrate 192,
- the LED lighting 118 may be arranged around the mirror section 172a.
- the tip adapter for direct view and side view has been described, the tip adapter is not limited to these, and other view directions other than those are described, for example, front perspective type It may be a tip adapter etc.
- the light emitting element using the LED as the light emitting element may be a laser diode or the like other than the one limited to the LED.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US11/398,543 US8308637B2 (en) | 2003-10-06 | 2006-04-06 | Endoscope |
US12/177,576 US8435173B2 (en) | 2003-10-06 | 2008-07-22 | Endoscope |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2003347645A JP4418202B2 (ja) | 2003-10-06 | 2003-10-06 | 内視鏡 |
JP2003-347645 | 2003-10-06 |
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Application Number | Title | Priority Date | Filing Date |
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US11/398,543 Continuation US8308637B2 (en) | 2003-10-06 | 2006-04-06 | Endoscope |
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WO2005032356A1 true WO2005032356A1 (ja) | 2005-04-14 |
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PCT/JP2004/014617 WO2005032356A1 (ja) | 2003-10-06 | 2004-10-04 | 内視鏡 |
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US (1) | US8308637B2 (ja) |
JP (1) | JP4418202B2 (ja) |
WO (1) | WO2005032356A1 (ja) |
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Also Published As
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US20060183977A1 (en) | 2006-08-17 |
JP2005110879A (ja) | 2005-04-28 |
US8308637B2 (en) | 2012-11-13 |
JP4418202B2 (ja) | 2010-02-17 |
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