WO2016031419A1 - ワイヤ装置及び内視鏡 - Google Patents
ワイヤ装置及び内視鏡 Download PDFInfo
- Publication number
- WO2016031419A1 WO2016031419A1 PCT/JP2015/070358 JP2015070358W WO2016031419A1 WO 2016031419 A1 WO2016031419 A1 WO 2016031419A1 JP 2015070358 W JP2015070358 W JP 2015070358W WO 2016031419 A1 WO2016031419 A1 WO 2016031419A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wire
- bending
- sheath
- endoscope
- insertion portion
- Prior art date
Links
- 238000000576 coating method Methods 0.000 claims abstract description 38
- 239000011248 coating agent Substances 0.000 claims abstract description 32
- 239000000314 lubricant Substances 0.000 claims abstract description 28
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 238000005452 bending Methods 0.000 claims description 213
- 238000003780 insertion Methods 0.000 claims description 42
- 230000037431 insertion Effects 0.000 claims description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000007787 solid Substances 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 6
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 210000002429 large intestine Anatomy 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Images
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
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0057—Constructional details of force transmission elements, e.g. control wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/0011—Manufacturing of endoscope parts
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
- G02B23/243—Objectives for endoscopes
-
- 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
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0138—Tip steering devices having flexible regions as a result of weakened outer material, e.g. slots, slits, cuts, joints or coils
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
Definitions
- the present invention relates to a wire device and an endoscope.
- an endoscope includes an elongated insertion portion that is inserted into a site to be inspected and an operation portion that is coupled to the proximal end side of the insertion portion.
- the insertion portion includes an elongated and flexible flexible tube portion, a bending portion disposed on the distal end side of the flexible tube portion, and a distal end rigid portion disposed on the distal end side of the bending portion.
- the operation portion is provided with a bending operation device for bending the bending portion.
- At least a pair of metal bending operation wires are extended in the longitudinal direction inside the insertion portion.
- the bending operation wire moves forward and backward as the bending operation is performed by the bending operation device.
- the bending portion is bent when one of the pair of bending operation wires moves to the proximal end side and the other moves to the distal end side by the bending operation of the bending operation device.
- the same number of coil pipes as the bending operation wires are extended in the longitudinal direction inside the flexible tube portion.
- the coil pipe is a guide member that guides the bending operation wire.
- a corresponding one bending operation wire in the bending operation wires is inserted so as to be movable forward and backward.
- a bending piece set in which a plurality of bending pieces are connected so as to be rotatable with respect to each other and are elongated in the longitudinal direction.
- the same number of wire receivers as the bending operation wires are provided on each bending piece.
- a corresponding one bending operation wire in the bending operation wires is inserted into each of the wire receivers so as to be able to move forward and backward.
- the flexible tube part of the insertion part is deformed into a complicated shape such as a loop shape.
- a frictional force is generated between the outer peripheral surface of the bending operation wire and the inner peripheral surface of the coil pipe, and the sliding is performed. Resistance increases. The amount of operation force when bending the bending operation device increases as the sliding resistance increases.
- the bending operation wire receives a load from a wire receiver or the like.
- the load received by the bending operation wire is large, there is a possibility that the bending operation wire is broken.
- a lubricant coating is applied to the outer peripheral surface of the bending operation wire or the bending operation is performed in order to reduce the amount of operation force during the bending operation and prevent the bending operation wire from receiving a large load.
- a powdery solid lubricant is adhered to the outer peripheral surface of the wire.
- the powder which is a solid lubricant adhered to the outer peripheral surface of the bending operation wire, easily falls off the wire by sliding in the longitudinal direction.
- Japanese Patent Application Laid-Open No. 2014-033933 discloses that the coating portion of the bending operation wire is resistant to low-temperature plasma sterilization, and the operation force when the bending operation is performed without increasing the inner diameter and outer diameter of the coil pipe. Has been disclosed, which can effectively prevent breakage of the bending operation wire inside the bending portion.
- a coating portion including a first film forming portion and a second film forming portion is provided on the outer peripheral surface of the bending operation wire.
- the coating portion applied to the outer peripheral surface of the bending operation wire may be peeled off from the wire by sliding in the coil pipe or contacting the wire receiver.
- the coating part including the bending operation wire binder When the coating part including the bending operation wire binder is peeled from the operation wire in the coil pipe which is a narrow space, the binder contained in the peeled coating part adheres to the inner surface of the coil pipe and the bending operation wire slides. There is a risk of hindrance.
- the coding portion provided on the outer peripheral surface of the wire such as the forceps raising wire, the lens operation wire, and the insertion assisting portion driving force transmission wire inserted through the sheath is peeled off from the wire by sliding in the sheath. There is a fear.
- the coating part including the bending operation wire binder is peeled off from the operation wire in the bending piece set which is a wide space, the peeled coating part and binder are scattered in the bending piece set. .
- the binder and the coating containing the binder scattered in the bending portion group cannot be a factor that prevents the bending operation wire from sliding.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide a bending device that reduces the amount of operation force when performing a bending operation and prevents the bending operation wire from being cut inside the bending portion. Yes.
- a wire device includes a sheath disposed inside an endoscope, and a wire that is inserted through the sheath and is moved or rotated in the axial direction within the sheath.
- a coating process including a binder component is performed only in a range exposed from the sheath, and a powdery lubricant not including the binder component is applied at least in a range inserted through the sheath.
- An endoscope includes a sheath disposed inside an endoscope, and a wire that is inserted through the sheath and is moved or rotated in the axial direction within the sheath.
- FIG. 1 Schematic diagram explaining the internal structure of the endoscope Sectional drawing explaining the structure of the flexible tube part and bending part of an endoscope Y4-Y4 cross-sectional view of FIG. Y5-Y5 cross-sectional view of FIG.
- each component may be shown with a different scale so that each component has a size that can be recognized on the drawing. Therefore, according to the present invention, the quantity of components, the shape of the components, the ratio of the sizes of the components, and the relative positional relationship of the components described in these drawings are limited to the illustrated embodiments. It is not a thing.
- the endoscope 1 is a bending device, and includes an elongated insertion portion 2 that is inserted into, for example, a body cavity that is a test site, and an operation portion 3 that is connected to the proximal end side of the insertion portion 2. And comprising.
- a universal cord 4 is connected to the proximal end side of the operation unit 3.
- a scope connector 5 is provided at the base end of the universal cord 4.
- the insertion portion 2 is provided on the distal end side of the bending portion 7, an elongated flexible flexible tube portion 6 that is a tube, a bending portion 7 that is a bending tube that can be bent and connected to the distal end side of the flexible tube portion 6, and the bending portion 7.
- the distal end rigid portion 8 is provided with an imaging device (not shown) for imaging a subject, an air / water feeding nozzle (not shown), and the like.
- the tube is not limited to a slender and flexible flexible tube portion, and may be a hard and slender tube portion.
- the operation unit 3 includes an operation unit casing 11 and a holding unit casing 12.
- the operation portion casing 11 is provided with an up / down bending operation knob 13A for performing the bending operation of the bending portion 7 in the up / down direction and a left / right bending operation knob 13B for performing a bending operation of the bending portion 7 in the left / right direction. .
- the holding unit casing 12 is provided on the insertion unit 2 side of the operation unit casing 11 and a forceps port 15 is provided.
- a vertical bending operation mechanism for bending the bending portion 7 in the vertical direction will be described.
- a pulley 21 is provided as a rotating member inside the operation unit 3.
- the pulley 21 is connected to the up / down bending operation knob 13A.
- the pulley 21 rotates in the direction of arrow A or arrow B in FIG. 2 in accordance with the bending operation of the up / down bending operation knob 13A.
- the bending portion 7 includes a bending portion set 31.
- the bending portion set 31 is formed by connecting a plurality of bending pieces 35 so as to be rotatable in the longitudinal direction.
- Each of the bending operation wires 22A and 22B is inserted through the inside of the flexible tube portion 6 and the inside of the bending portion 7 along the longitudinal axis of the insertion portion 2.
- each of the bending operation wires 22A and 22B is connected to a predetermined position of the distal bending piece 35A arranged on the most distal end side of the bending portion set 31. That is, the bending operation wires 22 ⁇ / b> A and 22 ⁇ / b> B are extended from the inside of the operation unit 3 to the inside of the bending unit 7 through the inside of the flexible tube unit 6.
- the bending part 7 curves in the direction (downward) opposite to the arrow C in FIG.
- the up / down bending operation mechanism for bending the bending portion 7 in the up / down direction is configured.
- the left / right bending operation mechanism that bends the bending portion 7 in the left / right direction has the same configuration as that of the up / down bending operation mechanism, and thus the description thereof is omitted.
- the serpentine tube portion 6 is made of a metal spiral tube 41, a serpentine tube network tube 42 provided on the outer peripheral side of the spiral tube 41, and a resin-coated outer peripheral surface of the serpentine tube network tube 42. And the serpentine tube outer skin 43.
- the spiral tube 41 is formed by turning a metal strip-like member spirally at a predetermined interval.
- the bending portion 7 includes the bending portion set 31 described above, a bending portion network tube 32 provided on the outer peripheral side of the bending portion set 31, and a rubber bending portion skin 33 covered on the outer peripheral surface of the bending portion network tube 32.
- the serpentine tube portion 6 and the bending portion 7 are configured to be connected to a connection base 37 of the serpentine tube portion 6 and a proximal end bending piece 35 ⁇ / b> B arranged on the most proximal side of the bending portion group 31.
- the connection base 37 includes, for example, a small-diameter portion 37A having substantially the same diameter as the spiral tube 41, and a large-diameter portion 37B provided on the proximal end side of the small-diameter portion 37A and having a larger diameter than the small-diameter portion 37A.
- the proximal bending piece 35 ⁇ / b> B is fitted in a state of being externally fitted to the small diameter portion 37 ⁇ / b> A of the connection base 37.
- the large-diameter portion 37 ⁇ / b> B of the connection base 37 is fitted in a state of being externally fitted to the spiral tube 41 and the serpentine tube portion network tube 42. Thereby, the serpentine tube portion 6 and the bending portion 7 are connected. Further, between the distal end portion of the serpentine tube outer skin 43 and the base end portion of the bending portion outer skin 33, the serpentine tube outer skin 43 and the bending portion outer skin 33 are wound with a thread 38 and then covered with an adhesive
- the inside of the serpentine tube section 6 and the bending section 7 are long, such as an imaging cable 51, a light guide 52, an air / water supply tube 53, a forceps tube 54, and an auxiliary water supply tube 55.
- Various soft built-in objects 50 are inserted.
- the distal end of the imaging cable 51 is connected to an imaging element (not shown) inside the distal rigid portion 8.
- the proximal end portion of the imaging cable 51 is connected to an image observation apparatus (not shown) through the operation unit 3 and the universal cord 4 via the scope connector 5.
- the base end portion of the light guide 52 is connected to an illumination power supply device (not shown) through the operation unit 3 and the universal cord 4 via the scope connector 5.
- the light guide 52 guides light that irradiates the subject to an illumination window (not shown) of the distal end rigid portion 8.
- the distal end portion of the air / water feeding tube 53 is connected to an air / water feeding channel (not shown) of the distal end rigid portion 8.
- the air / water supply tube 53 is branched into an air supply tube 53 ⁇ / b> A and a water supply tube 53 ⁇ / b> B inside the serpentine tube 6.
- the proximal end portion of the air supply tube 53A is connected to an air supply device (not shown) via the scope connector 5 through the operation unit 3 and the universal cord 4.
- the proximal end portion of the water supply tube 53B is connected to a water supply device (not shown) via the scope connector 5 through the operation unit 3 and the universal cord 4.
- the distal end portion of the forceps tube 54 is connected to a forceps channel (not shown) of the distal end rigid portion 8.
- the forceps tube 54 is divided into two parts inside the operation unit 3, and one is connected to the forceps port 15. The other of the two parts is connected to a suction device (not shown) through a universal connector 4 and a scope connector 5.
- the tip of the auxiliary water supply tube 55 is connected to the auxiliary water supply channel (not shown) of the distal end rigid portion 8.
- the base end portion of the auxiliary water supply tube 55 passes through the operation unit 3 and the universal cord 4 and is connected to a water supply device (not shown) different from the water supply device that supplies water to the air / water supply tube 53 via the scope connector 5. It is connected.
- the coil pipe 45 is a close contact coil in which the strands are in contact with each other in a natural state, and the strands are wound spirally.
- the sheath is made of, for example, resin.
- the tip ends of the four coil pipes 45 are attached to a predetermined position of the connection cap 37 by soldering, for example, and are arranged in the serpentine tube portion 6.
- the bending operation wires 22A, 22B, 22C, and 22D are described as the bending operation wires 22 except for a predetermined case.
- the coil pipe 45 is a guide member that is configured by spirally winding an element wire around the operation wire, and the corresponding one bending operation wire 22 in the bending operation wire 22 is placed in the pipe 45. It is inserted.
- the bending operation wire 22 is extended from the distal end portion of the coil pipe 45 further to the distal end side than the connection base 37.
- Four wire receivers 23 corresponding to the bending direction are provided on the inner peripheral surface of each bending piece 35 forming the bending portion set 31.
- the wire receivers 23 are arranged at intervals of about 90 ° in the circumferential direction of the insertion portion 2.
- Each wire receiver 23 is a support part provided with a through hole through which one bending operation wire 22 is inserted.
- a corresponding one of the four bending operation wires 22 among the four bending operation wires 22 is disposed on the wire receiver 23.
- the distal end portion of the bending operation wire 22 is fixed to a wire stopper (not shown) provided on the distal bending piece 35A.
- a coating portion 25 subjected to a coating process with a predetermined thickness is provided on a part of the outer peripheral surface of each bending operation wire 22.
- the coating portion 25 is made of a material such as graphite-containing fluororesin paint, PTFE-nickel plating, and PTFE-epoxy resin paint containing an epoxy resin and a phenol resin as binder components.
- the coating portion 25 is provided in a range that is disposed inside the bending portion 7 of the bending operation wire 22. In other words, the coating portion 25 is not provided in a range in which the bending operation wire 22 is inserted into the coil pipe 45 provided inside the serpentine tube portion 6. That is, the coating portion 25 of the bending operation wire 22 is provided on the portion that contacts the wire receiver 23.
- a powdery lubricant (solid lubricant powder described above) is used. 26 is applied.
- the operation of the endoscope 1 according to this embodiment will be described.
- the insertion portion 2 of the endoscope 1 is inserted into the body cavity and the bending portion 7 is bent, for example, the up / down bending operation knob 13A is operated.
- the pulley 21 rotates, the lower bending wire 22B, which is one of the pair of bending operation wires 22, is moved to the distal end side, and the other upward bending wire 22A is moved to the proximal end side. That is, the bending portion 7 is bent as the upward bending wire 22A is pulled.
- the powdered lubricant 26 applied to the bending operation wire 22 falls off by sliding as described above, but the powdered lubricant 26 applied to the bending operation wire 22 is within the coil pipe 45.
- the powdered lubricant 26 that has fallen off remains attached to the inner peripheral surface of the coil pipe 45.
- the bending operation wire 22 contacts the wire receiver 23 and receives a large load.
- the bending operation wire 22 disposed in the bending portion 7 is provided with a coating portion 25, and a powdery lubricant 26 is applied on the surface of the coating portion 25.
- the frictional force generated by the applied powdered lubricant 26 is reduced in the initial state.
- the coating portion 25 having a predetermined thickness is provided, the wire 22 is difficult to receive a large load. Moreover, it is hard to peel by having set the coating part 25 to the predetermined thickness. Therefore, cutting of the bending operation wire 22 due to a load from the wire receiver 23 is effectively prevented.
- powdered lubricant 26 needs to be applied to the bending operation wire 22.
- a plurality of types of powdered lubricants such as PTFE, silicone rubber, graphite, or fluorinated graphite are prepared, and the powdered lubricant 26 to be applied to the bending operation wire 22 is selected by performing a test. is doing.
- the powdery lubricant described above was applied to the unpainted bending operation wire 22, the wire 22 in a state where the lubricant was applied was inserted into the coil pipe 45, and the bending operation was performed.
- the wire 22 is repeatedly slid, the wire traction force when the wire 22 is slid is measured, and the difference in wire traction force for each lubricant is compared.
- the PTFE system increased by 50%
- the silicone rubber system increased by 50 to 100%
- the graphite system increased by more than 100% with respect to the wire pulling force when fluorinated graphite was applied.
- the bending operation wire 22 of the present embodiment is coated with fluorinated graphite that exhibits the lowest sliding resistance.
- the lubricity in the bending portion 7 of the bending operation wire 22 is ensured by the coating portion 25, and the lubricity in the coil pipe 45 of the bending operation wire 22 is ensured by the powdery lubricant 26.
- Lubricant can be used together efficiently to reduce the amount of bending operation force and to prevent the bending operation wire 22 from being cut by a load.
- the sheath is a contact coil.
- a plurality of ring-shaped members arranged in contact with each other, a pipe-shaped member arranged in contact with each other, and one pipe-shaped member may be used as a sheath.
- the coating portion 25 is, for example, bent upward
- the wire 22A is pulled and the bending portion 7 is in the maximum bending state in the upward direction
- the solid portion does not come out of the sheath even when the downward bending wire 22B is drawn into the bending portion 7.
- the coating portion 25 provided on the bending operation wire 22 slides in the coil pipe 45, and thus the coating portion including the binder may be peeled off, and the advancement / retraction of the bending operation wire 22 may be hindered. For this reason, it is desirable to set the range for performing the coating process within the minimum range that satisfies the above-described conditions.
- the wire is the bending operation wire 22
- the wire has a raising base that raises a treatment tool that is provided in the insertion portion and is inserted into the insertion portion, and is inserted into the insertion portion. It is also possible to use a raising wire that is pulled in order to raise the raising table.
- the present embodiment shows an example in which the wire is the bending operation wire 22, an insertion assisting portion provided on the outer surface of the insertion portion for moving the insertion portion forward and backward with respect to the subject is provided. And a transmission wire that transmits a driving force for rotating the insertion assisting portion around the longitudinal axis of the insertion portion.
- the present embodiment shows an example in which the wire is the bending operation wire 22, the embodiment has a photographic lens that is provided in the insertion portion and is movable in the optical axis direction, and is inserted into the insertion portion and has the photographic lens. It may be a lens operation wire pulled to be moved.
- the bending device is not limited to an endoscope, but may be other types of devices such as a treatment tool used together with an insertion aid, an endoscope, and the like in addition to an endoscope.
- the present invention it is possible to realize a bending apparatus that reduces the amount of operation force when performing a bending operation and prevents the bending operation wire from being cut inside the bending portion.
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- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Astronomy & Astrophysics (AREA)
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- Endoscopes (AREA)
Abstract
Description
また、湾曲部の内部には、複数の湾曲駒を互い回動可能に連結して長手方向に細長に形成した湾曲駒組が設けられている。それぞれの湾曲駒には、例えば湾曲操作ワイヤと同一の数だけワイヤ受けが設けられている。それぞれのワイヤ受けには、湾曲操作ワイヤの中の対応する1本の湾曲操作ワイヤが進退移動可能に挿通される。
しかし、湾曲操作ワイヤの外周面に付着させた固体潤滑剤である粉は、長手方向に摺動することによってワイヤから脱落し易い。
しかしながら、湾曲操作ワイヤの外周面に施したコーティング部は、コイルパイプ内を摺動することによって、或いは、ワイヤ受けに接触することによって該ワイヤから剥がれるおそれがある。
以下の説明に用いる各図面においては、各構成要素を図面上で認識可能な程度の大きさとするため、各構成要素毎に縮尺を異ならせて示している場合がある。したがって、本発明は、これらの図面に記載された構成要素の数量、構成要素の形状、構成要素の大きさの比率及び各構成要素の相対的な位置関係は、図示の形態のみに限定されるものではない。
図1に示すように内視鏡1は湾曲装置であって、被検部位である例えば体腔内に挿入される細長な挿入部2と、挿入部2の基端側に連結された操作部3と、を備える。操作部3の基端側には、ユニバーサルコード4が接続されている。ユニバーサルコード4の基端部には、スコープコネクタ5が設けられている。
図2に示すように、操作部3の内部には、回動部材として例えばプーリ21が設けられている。プーリ21は、上下湾曲操作ノブ13Aに連結されている。プーリ21は、上下湾曲操作ノブ13Aの湾曲操作に伴って図2の矢印Aの方向又は矢印Bの方向に回転する。プーリ21には、上下湾曲操作ノブ13Aでの湾曲操作を湾曲部7に伝達する湾曲操作伝達部材である一対の湾曲操作ワイヤ22A,22Bの一端が接続されている。
以上のようにして、湾曲部7を上下方向に湾曲させる上下湾曲操作機構が構成されている。
なお、湾曲部7を左右方向に湾曲させる左右湾曲操作機構については、上下湾曲操作機構と同様の構成であるため、その説明を省略する。
湾曲操作ワイヤ22の先端部は、先端湾曲駒35Aに設けられるワイヤ止め(図示しない)に固定されている。それぞれの湾曲操作ワイヤ22を挿入部2の長手方向に牽引する一方弛緩させることにより、前述のように湾曲部7が湾曲される。
つまり、湾曲操作ワイヤ22のコーティング部25は、ワイヤ受け23に接触する部分に対して設けてある。
本実施形態の内視鏡1の作用を説明する。
内視鏡1の挿入部2を体腔内に挿入して、湾曲部7を湾曲させる際、例えば、上下湾曲操作ノブ13Aを操作する。この結果、プーリ21が回転し、一対の湾曲操作ワイヤ22の一方である下方向湾曲ワイヤ22Bが先端側に移動され、他方である上方向湾曲ワイヤ22Aが基端側に移動する。即ち、上方向湾曲ワイヤ22Aの牽引に伴って湾曲部7が湾曲されていく。
したがって、ワイヤ受け23からの負荷による湾曲操作ワイヤ22の切れが有効に防止される。
Claims (12)
- 内視鏡の内部に配置されるシースと、
前記シースに挿通され、前記シース内において軸方向に移動または回転されるワイヤと、
を具備し、
前記ワイヤは、前記シースから露出する範囲にのみバインダ成分を含むコーティング処理が施され、少なくとも前記シースに挿通される範囲に前記バインダ成分を含まない粉状潤滑剤が塗布されることを特徴とするワイヤ装置。 - 前記シースは樹脂製であることを特徴とする請求項1に記載のワイヤ装置。
- 前記粉状潤滑剤は、前記ワイヤの前記コーティング処理が施された範囲及び前記コーティング処理が施されていない範囲に渡って塗布されることを特徴とする請求項1に記載のワイヤ装置。
- 前記粉状潤滑剤はフッ化黒鉛であること特徴とする請求項1に記載のワイヤ装置。
- 請求項1に記載のワイヤ装置を有することを特徴とする内視鏡。
- 前記内視鏡は、
被検体に挿入される挿入部と、
前記挿入部に設けられる湾曲可能な湾曲管と、
を有し、
前記ワイヤは、前記挿入部内に挿通され、前記湾曲管を湾曲させるために牽引される湾曲操作ワイヤであることを特徴とする請求項5に記載の内視鏡。 - 前記湾曲操作ワイヤは、一対のワイヤによって構成され、
前記一対のワイヤは、前記湾曲管を互いに異なる湾曲方向へ湾曲させるように前記湾曲管に連結されており、
前記コーティング処理は、前記一対のワイヤのうち一方が牽引されて前記湾曲管が最大湾曲状態となることで他方の湾曲ワイヤが前記湾曲管の内部に引き込まれた状態において前記コーティング処理が施されていない範囲が前記シース外に出ないように前記コーティング処理を施す範囲を設定することを特徴とする請求項6に記載の内視鏡。 - 前記湾曲管は、湾曲駒を回動可能に複数連結して構成された湾曲部組を含むことを特徴とする請求項6に記載の内視鏡。
- 前記シースは、素線を螺旋状に巻回して形成され、前記湾曲操作ワイヤを前記シースの内部で進退移動可能な状態で挿通することを特徴とする請求項6に記載の内視鏡。
- 前記内視鏡は、
被検体に挿入される挿入部と、
前記挿入部に設けられ、前記挿入部内に挿通される処置具を起上する起上台と、
を有し、
前記ワイヤは、前記挿入部内に挿通され、前記起上台を起上操作するために牽引される起上ワイヤであることを特徴とする請求項5に記載の内視鏡。 - 前記内視鏡は、
被検体に挿入される挿入部と、
前記挿入部に設けられ、光軸方向に移動可能な撮影レンズと、
を有し、
前記ワイヤは、前記挿入部内に挿通され、前記撮影レンズを移動させるために牽引されるレンズ操作ワイヤであることを特徴とする請求項5に記載の内視鏡。 - 前記内視鏡は、
被検体に挿入される挿入部と、
前記挿入部の外表面に設けられ、前記挿入部を前記被検体に対して進退移動させるための挿入補助部と、
を有し、
前記ワイヤは、前記挿入補助部を前記挿入部の長手軸回りに回転させるための駆動力を伝達する伝達ワイヤであることを特徴とする請求項5に記載の内視鏡。
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JP2015558280A JP5914781B1 (ja) | 2014-08-27 | 2015-07-16 | ワイヤ装置及び内視鏡 |
EP15835602.2A EP3078320B1 (en) | 2014-08-27 | 2015-07-16 | Wire device and endoscope |
US15/196,250 US20160302645A1 (en) | 2014-08-27 | 2016-06-29 | Wire apparatus and endoscope |
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EP (1) | EP3078320B1 (ja) |
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Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62134616A (ja) * | 1985-12-06 | 1987-06-17 | Olympus Optical Co Ltd | 内視鏡 |
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US5752912A (en) * | 1995-06-26 | 1998-05-19 | Asahi Kogaku Kogyo Kabushiki Kaisha | Manipulator for flexible portion of an endoscope |
JP2000166858A (ja) * | 1998-12-10 | 2000-06-20 | Olympus Optical Co Ltd | 内視鏡 |
US8500628B2 (en) * | 2006-02-28 | 2013-08-06 | Olympus Endo Technology America, Inc. | Rotate-to-advance catheterization system |
BRPI0819253B1 (pt) * | 2007-11-02 | 2022-09-20 | Vallourec Oil And Gas France | Composição para formar um revestimento lubrificante sobre uma junta rosqueada para tubos |
JPWO2012014532A1 (ja) * | 2010-07-28 | 2013-09-12 | オリンパスメディカルシステムズ株式会社 | 内視鏡と、この内視鏡の挿通湾曲方法 |
WO2012173082A1 (ja) * | 2011-06-16 | 2012-12-20 | オリンパスメディカルシステムズ株式会社 | 内視鏡 |
CN103491846B (zh) * | 2011-09-01 | 2016-08-17 | 奥林巴斯株式会社 | 内窥镜 |
JP5527904B2 (ja) * | 2011-11-28 | 2014-06-25 | 富士フイルム株式会社 | 内視鏡 |
JP5901469B2 (ja) * | 2012-08-10 | 2016-04-13 | オリンパス株式会社 | 内視鏡 |
-
2015
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- 2015-07-16 WO PCT/JP2015/070358 patent/WO2016031419A1/ja active Application Filing
- 2015-07-16 EP EP15835602.2A patent/EP3078320B1/en active Active
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Publication number | Priority date | Publication date | Assignee | Title |
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JPS62134616A (ja) * | 1985-12-06 | 1987-06-17 | Olympus Optical Co Ltd | 内視鏡 |
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US20160302645A1 (en) | 2016-10-20 |
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JPWO2016031419A1 (ja) | 2017-04-27 |
EP3078320A4 (en) | 2017-08-30 |
EP3078320B1 (en) | 2018-09-12 |
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