WO2015198641A1 - 内視鏡システム - Google Patents

内視鏡システム Download PDF

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Publication number
WO2015198641A1
WO2015198641A1 PCT/JP2015/056319 JP2015056319W WO2015198641A1 WO 2015198641 A1 WO2015198641 A1 WO 2015198641A1 JP 2015056319 W JP2015056319 W JP 2015056319W WO 2015198641 A1 WO2015198641 A1 WO 2015198641A1
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WO
WIPO (PCT)
Prior art keywords
distal end
endoscope
sheath
rigid
ring
Prior art date
Application number
PCT/JP2015/056319
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
浩之 金子
Original Assignee
オリンパス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オリンパス株式会社 filed Critical オリンパス株式会社
Priority to CN201590000071.XU priority Critical patent/CN205181288U/zh
Publication of WO2015198641A1 publication Critical patent/WO2015198641A1/ja

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • 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

Definitions

  • the present invention relates to an endoscope system including a flexible endoscope having a flexible insertion portion and a rigid sheath having a tubular portion through which the insertion portion of the flexible endoscope can be inserted. .
  • the insertion portion is configured to be rigid, and the insertion portion is configured to be flexible by providing a bending portion and a flexible tube portion.
  • a rigid endoscope having a rigid insertion portion has an advantage that after the insertion portion is inserted into the ureter, the insertion portion can be smoothly guided into the kidney.
  • the insertion portion since it does not have a bending function, for example, there is a problem that it cannot reach the lower kidney cup.
  • a flexible endoscope having a flexible insertion portion has a problem that it is difficult to guide the insertion portion from the ureter into the kidney, and it takes time to acquire the technique.
  • since it has a bending function there is an advantage that it can reach the lower renal cup, for example.
  • a proposal for an endoscope system including a flexible endoscope having a flexible insertion portion and a tubular member (rigid sheath) that can be inserted through the insertion portion of the flexible endoscope is, for example, Various disclosures are made in Japanese Patent Publication No. 2014-14558.
  • An endoscope system disclosed in Japanese Patent Publication No. 2014-14558 and the like includes an endoscope having a flexible insertion portion, and a tubular member (guide sheath) that houses the endoscope insertion portion.
  • the tubular member (guide sheath) can be changed from a straight tubular shape to a bent state that is bent at a desired bending angle while the endoscope is inserted.
  • the insertion property as a flexible endoscope can be used.
  • the present invention has been made in view of the above-described points, and an object of the present invention is to insert a flexible endoscope having a flexible insertion portion and the insertion portion of the flexible endoscope.
  • an endoscope system comprising a rigid sheath with a tubular portion capable of eliminating a step between the distal inner peripheral surface of the rigid sheath and the distal outer peripheral surface of the endoscope inserted through the rigid sheath.
  • Another object of the present invention is to provide an endoscope system that can always ensure smooth insertion.
  • an endoscope system includes an elongated insertion portion including a distal end hard portion and a curved portion connected to the proximal side of the distal end hard portion.
  • a mirror a rigid sheath having a tubular portion through which the insertion portion can be inserted, and having a length capable of projecting the distal end hard portion toward the distal end side of the tubular portion; the distal end rigid portion and the distal end portion of the tubular portion; And a sealing region provided between the two.
  • an endoscope system including a flexible endoscope having a flexible insertion portion and a rigid sheath having a tubular portion through which the insertion portion of the flexible endoscope can be inserted.
  • FIGS. 2A and 2B are diagrams showing a part of the hard sheath in the endoscope system of FIG. 1 in section
  • FIG. 2A is a front view including a partial cross-sectional view
  • FIG. 2B is an arrow in FIG. Side view including a partial cross-sectional view when viewed from the Y2B direction
  • the principal part expanded sectional view which expands and shows the cross section of the front-end
  • the figure which shows another modification about a sealing member in the endoscope system of FIG. It is a figure explaining the effect
  • 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 number of constituent elements, the shape of the constituent elements, the ratio of the constituent element sizes, and the relative positional relationship of the constituent elements described in these drawings are limited to the illustrated embodiments. It is not a thing.
  • FIG. 1 is an external view showing a schematic configuration of an endoscope system according to an embodiment of the present invention.
  • the endoscope system 1 of the present embodiment includes a rigid sheath 2 and an endoscope 10.
  • the endoscope 10 applied in the endoscope system 1 of the present embodiment is, for example, a nephroscope.
  • the endoscope 10 is mainly configured by an insertion unit 11, an operation unit 12, an eyepiece unit 13, and the like.
  • the eyepiece unit 13 is an observation optical system that includes an eyepiece optical system for observing an optical endoscopic image.
  • the eyepiece 13 is provided on the proximal end side of the operation unit 12.
  • a light guide connection port (not shown) is provided on the side of the operation unit 12.
  • a connection connector 14c is detachably provided at the light guide connection port.
  • a light guide 14 extends from the connection connector 14c.
  • the operation unit 12 is provided with a water leakage detection base 19, a treatment instrument insertion port 20, a bending operation lever 21, and the like.
  • the bending operation lever 21 is pivotally supported with respect to the operation unit 12 so as to be rotatable.
  • the bending operation lever 21 is an operation member for performing a bending operation on a bending portion 16 described later.
  • the insertion portion 11 includes a distal end hard portion 15 made of a rigid member in order from the distal end side, a bending portion 16 configured to bend in the vertical direction, and a flexible tube portion 17 that is a tube body having flexibility.
  • a distal end hard portion 15 made of a rigid member in order from the distal end side
  • a bending portion 16 configured to bend in the vertical direction
  • a flexible tube portion 17 that is a tube body having flexibility.
  • the endoscope 10 includes the long insertion portion 11 including the distal end hard portion 15 and the bending portion 16 connected to the proximal side of the distal end hard portion 15. .
  • the flexible tube portion 17 is an elongated tube-like member. On the base end side of the flexible tube portion 17, a bend preventing portion 18 having a predetermined elastic force is provided.
  • the bend preventing portion 18 is provided so as to cover the proximal end portion of the flexible tube portion 17 to prevent buckling of the flexible tube portion 17, and between the flexible tube portion 17 and the distal end side of the operation portion 12. It is fixed with watertightness.
  • the bending portion 16 is configured to bend in two directions up and down according to the turning operation of the bending operation lever 21.
  • a bending operation wire (not shown) is inserted from the inside of the operation unit 12 into the flexible tube portion 17 and the bending portion 16, and one end of the bending operation wire is connected to the bending operation lever 21. The other end is connected to the bending portion 16.
  • the bending operation lever 21 is turned, the bending operation wire is pulled and loosened, whereby the bending operation of the bending portion 16 can be realized.
  • the distal end surface of the distal end hard portion 15 of the insertion portion 11 is provided with an unillustrated observation window, illumination window, treatment instrument opening, and the like.
  • an illumination bundle (light guide 14) that transmits illumination light to the illumination window 14a (see FIG. 3), an observation bundle that transmits an observation image observed through the observation window, and the treatment tool
  • a treatment instrument channel tube that communicates the opening and the treatment instrument insertion port 20, an up / down bending operation wire, and the like are inserted and arranged.
  • symbol 22 is a passive bending part.
  • the passive bending portion 22 is configured to be easily bent by receiving an external force, for example.
  • the endoscope 10 of the present embodiment is exemplified as a nephroscope as described above, the form of the endoscope to which the present invention can be applied is not limited to this.
  • the insertion portion 11 is configured as an endoscope having a flexible insertion portion including the bending portion 16 and the flexible tube portion 17, the same applies to other uses.
  • the present invention can be applied to.
  • the rigid sheath 2 includes a sheath body 3 that is formed into a hollow substantially tubular shape (substantially tubular shape) by a hard member made of stainless steel that is a metal member, for example, and an endoscope 10 that is connected to the sheath body 3. And an endoscope mounting portion 4 formed so as to be mountable.
  • the rigid sheath 2 has a sheath main body 3 that is a tubular portion through which the insertion portion 11 of the endoscope 10 can be inserted, and the distal hard portion 15 of the endoscope 10 is connected to the sheath main body 3 (tubular portion). It is formed to have a length that can protrude from the tip side.
  • the endoscope mounting portion 4 includes a knob portion 5, a contact member 6, a fixing member 7 as a second knob portion, a stopper member 8, and the like.
  • the knob portion 5 and the contact member 6 are formed integrally.
  • the fixing member 7 (second knob portion) is detachable from the stopper member 8.
  • FIG. 2 is a view showing a part of the rigid sheath in the endoscope system of the present embodiment in cross section.
  • FIG. 2A is a front view including a partial cross-sectional view.
  • FIG. 2B is a side view including a partial cross-sectional view when viewed from the direction of the arrow Y2B in FIG.
  • the sheath body 3 is formed with a first tubular tube having an insertion portion insertion hole 3h (see FIG. 2B) that is a through hole (straight hole) in the direction along the long axis a. It is a member.
  • the sheath body 3 is a straight pipe member having a constant diameter and inner diameter.
  • the insertion portion insertion hole 3h of the sheath body 3 is an insertion hole through which the insertion portion 11 of the endoscope 10 is inserted.
  • the insertion portion 11 of the endoscope 10 is configured to be freely inserted into and removed from the insertion portion insertion hole 3 h of the sheath body 3.
  • the sheath body 3 is disposed so as to cover the distal end portion of the endoscope.
  • the endoscope mounting portion 4 is a second tubular member having a stepped shape on the proximal end side and having a through hole 4 h that penetrates in the longitudinal axis direction and communicates with the insertion portion insertion hole 3 h of the sheath body 3. .
  • the endoscope mounting portion 4 is integrated with a main body pipe portion 4A and a sheath length adjustment pipe portion (hereinafter abbreviated as a sheath length adjustment portion) 4B by a connecting means such as adhesion or bonding. Fixed and configured.
  • the endoscope mounting portion 4 is not limited to one configured by integrally fixing a plurality of members, and may be configured by one pipe member.
  • the main body pipe portion 4A includes an operation portion disposing portion 4c, a bend preventing disposing portion 4d, and a connecting portion 4e.
  • the connecting portion 4e has a fitting hole 4f on the opening side, and one end of a sheath length adjusting portion 4B formed in a straight pipe shape is fitted inside the fitting hole 4f. It is fixed.
  • the inner surface of the fixed sheath length adjusting portion 4B and the inner surface of the connecting portion 4e form substantially the same surface, and are formed as the inner surface of the small diameter straight hole 4h1 of the through hole 4h in the longitudinal axis direction.
  • the folding stop disposing portion 4d is configured by providing a tapered surface portion 4g and a folding stop contact portion 4i.
  • the anti-bending contact portion 4i is an intersection of the inner surface of the tapered surface portion 4g and the inner surface of the connecting portion 4e, and is pressed against the anti-bending portion 18 when the rigid sheath 2 is disposed in the endoscope 10. It is a part.
  • the taper angle of the taper surface portion 4g is set to be larger than the taper angle of the anti-bending portion 18.
  • the inner diameter of the inner surface of the connecting portion 4e is set to a diameter dimension at a predetermined intermediate portion in the folding preventing portion 18.
  • the operation portion arranging portion 4c is configured by providing a bend preventing covering portion 4j and a base arranging portion 4k. A portion of the anti-bending portion 4j and the tapered surface portion 4g covers the periphery of the anti-fold portion 18.
  • the base disposing part 4k is disposed so as to cover the vicinity of the water leakage detecting base 19 of the operation part 12.
  • An engagement groove 4m (see FIG. 2A) that constitutes a substantially L-shaped (mirror image) engagement portion is provided in the base arrangement portion 4k. The engagement groove 4m is engaged with the shaft portion 19a (see FIG. 7 described later) of the water leakage detection base 19.
  • the through-hole 4h mainly includes a small-diameter straight hole 4h1, an anti-bending cover hole 4h2, and an operation part cover hole 4h3.
  • the through hole of the sheath length adjusting portion 4B is the small diameter straight hole 4h1.
  • a contact member 6 and a stopper member 8 are slidably disposed inside the small diameter straight hole 4h1.
  • a movement range setting hole 4Bh1 and a positioning hole 4Bh2 are formed on the outer peripheral surface of the sheath length adjusting portion 4B.
  • the moving range setting hole 4Bh1 is a long hole formed along the long axis direction a through the small diameter straight hole 4h1 of the through hole 4h.
  • the movement range setting hole 4Bh1 sets a movement range of the contact member 6 in the longitudinal axis direction.
  • the positioning hole 4Bh2 is a through hole that communicates with the small-diameter straight hole 4h1, and is a long hole along the long axis direction a in the present embodiment.
  • the positioning hole 4Bh2 is a long hole that sets a movement range of the stopper member 8 in the longitudinal axis direction. In other words, the positioning hole 4Bh2 is provided for restricting the movement range of the stopper member 8 and positioning the leading edge side of the stopper member 8 (details will be described later).
  • One end of the movement range setting hole 4Bh1 (hereinafter referred to as an end portion on the base end side) is formed at a position separated from the base end side of the endoscope mounting portion 4 by a predetermined distance, thereby setting the movement range.
  • the other end of the hole 4Bh1 (hereinafter referred to as the end portion on the front end side) is formed at a position separated from the one end of the movement range setting hole 4Bh1 by a predetermined distance.
  • one end of the positioning hole 4Bh2 is formed at a position separated from the other end of the movement range setting hole 4Bh1 by a predetermined distance, and the other end of the positioning hole 4Bh2 is separated from one end of the positioning hole 4Bh2 by a predetermined distance. Formed in position.
  • the positioning hole 4Bh2 is provided in a portion near the other end of the endoscope mounting portion 4.
  • the contact member 6 slidably disposed inside the small-diameter straight hole 4h1 has a cylindrical shape and includes an axial through hole 6h and a female screw portion 6d.
  • An axial hole 6a and an introduction hole 6b are provided in the axial through hole 6h.
  • the introduction hole 6b is a hole provided with a tapered surface 6c that opens to one end side.
  • the taper surface 6c is a guide surface for smoothly guiding the distal end hard portion 15 of the insertion portion 11 of the endoscope 10 to the insertion portion insertion hole 3h of the sheath body 3, and the diameter dimension increases as the distance from the opening side increases. It is comprised so that it may become a small diameter continuously.
  • the axial hole portion 6a is a straight hole having openings at both ends, and the proximal end portion of the sheath body 3 is fitted and disposed on the distal end side.
  • the base end portion of the sheath body 3 is integrally fixed to the axial hole portion 6a by, for example, adhesion.
  • the sheath body 3 is provided so as to protrude forward from the distal end side of the contact member 6. In this state, the insertion portion insertion hole 3h and the introduction hole portion 6b of the sheath body 3 communicate with each other.
  • the female screw portion 6d is a screw hole that penetrates the side surface of the contact member 6 and has a female screw formed on the inner surface.
  • the axis of the female screw portion 6d is formed along a direction orthogonal to the axis of the axial through hole 6h.
  • the male screw portion 5a of the knob portion 5 is screwed to the female screw portion 6d. That is, the male screw portion 5a of the knob portion 5 is screwed into the female screw portion 6d of the contact member 6 through the movement range setting hole 4Bh1 of the endoscope mounting portion 4. As a result, the knob portion 5 is configured integrally with the contact member 6. At this time, by adjusting the screwed state of the male screw portion 5a and the female screw portion 6d, the state of the contact member 6 with respect to the endoscope mounting portion 4 can be set to a fixed state or a slidable state. it can.
  • the knob portion 5 and the abutting member 6 can be moved back and forth in the direction along the long axis a of the endoscope mounting portion 4 while being integrated.
  • the sheath body 3 can be moved forward and backward integrally as the contact member 6 moves forward and backward. That is, at this time, the sheath body 3 is slidable in the direction along the long axis a inside the endoscope mounting portion 4.
  • the distal end surface (not shown in FIG. 2) of the sheath body 3 is inward. It is arranged at a position closest to the distal end surface of the endoscope mounting portion 4.
  • the distal end surface (not shown in FIG. 2) of the sheath body 3 is It is arranged at a position farthest from the distal end surface of the endoscope mounting portion 4.
  • the stopper member 8 slidably disposed in the small-diameter straight hole 4h1 has a cylindrical shape and has a holding hole 8h that is an axial through hole and a female screw portion 8a.
  • the holding hole 8h is a through hole that holds the sheath body 3 so as to be able to advance and retract, and the sheath body 3 protruding from the distal end side of the contact member 6 is inserted therethrough.
  • the end surface on the proximal end side of the stopper member 8 is a contact surface with which the contact surface 6e which is the end surface on the distal end side of the contact member 6 contacts.
  • the female screw portion 8a is a screw hole that penetrates the side surface of the stopper member 8 and has a female screw formed on the inner surface.
  • the axis of the female screw portion 8a is formed along a direction orthogonal to the axis of the holding hole 8h. For this reason, the opening of the female screw portion 8a opens in a direction orthogonal to the axis of the holding hole 8h.
  • the male screw portion 8a of the second knob portion 7 which is a positioning fixing member is screwed to the female screw portion 8a. That is, the male screw portion 7 a of the second knob portion 7 is screwed into the female screw portion 8 a of the stopper member 8 through the positioning hole 4 Bh 2 of the endoscope mounting portion 4. Accordingly, the second knob portion 7 is configured integrally with the stopper member 8. At this time, by adjusting the screwed state of the male screw portion 7a and the female screw portion 8a, the state of the stopper member 8 with respect to the endoscope mounting portion 4 can be fixed or slidable. .
  • the second knob portion 7 and the stopper member 8 can be moved forward and backward in the direction along the long axis a of the endoscope mounting portion 4 while being integrated. Then, by moving the stopper member 8 in the direction along the long axis a, the contact position of the stopper member 8 with the proximal end surface, that is, the contact surface 6e of the contact member 6 can be changed. This means that the distance of the distal end surface of the sheath body 3 from the distal end surface of the endoscope mounting portion 4 can be adjusted by adjusting the arrangement position of the stopper member 8 on the long axis a. .
  • an O-ring 8b which is a biasing member, is disposed at the tip side in the holding hole 8h of the stopper member 8.
  • the O-ring 8b is a sliding resistance member, and is in close contact with the outer surface of the sheath body 3 inserted into the holding hole 8h in a state where the O-ring 8b is deformed by a predetermined amount, thereby providing a desired sliding resistance. 3 is given.
  • the contact member 6 can move forward and backward in the direction along the long axis a of the endoscope mounting portion 4 ( That is, even if the screwed state of the male threaded part 5a of the knob part 5 and the female threaded part 6d of the abutting member 6 is loosened), the sheath body 3 is, for example, its own weight relative to the endoscope mounting part 4. It is suppressed that it moves by etc.
  • a tapered surface 8c is formed on the proximal end side of the holding hole 8h.
  • the tapered surface 8c is formed such that the diameter thereof continuously decreases as the distance from the proximal end opening toward the distal end increases in the same manner as the tapered surface 6c of the contact member 6.
  • the taper surface 8c in the holding hole 8h functions as a guide surface for smoothly guiding the distal end portion of the sheath body 3 into the holding hole 8h.
  • FIG. 3 is an enlarged cross-sectional view of a main part showing an enlarged cross section in the vicinity of the distal end portion in a use state in which the endoscope 10 is attached to the rigid sheath 2 in the present endoscope system 1.
  • the most distal portion of the insertion portion insertion hole 3h of the rigid sheath 2 is an O-shaped sealing member (ring-shaped sealing portion) formed by an elastic member such as rubber.
  • a ring 26 is disposed along the inner peripheral wall surface of the tip.
  • the O-ring 26 is fixed to the hard sheath 2 by means such as adhesion.
  • the O-ring 26 has an outer peripheral surface of the insertion portion 11 of the endoscope 10 when the insertion portion 11 of the endoscope 10 is inserted through the insertion portion insertion hole 3h of the rigid sheath 2. It arrange
  • the distal end rigid portion 15 is positioned with respect to the rigid sheath 2 by positioning the second knob portion 7 and the stopper member 8.
  • the distal end position of the rigid sheath 2 is set so as to be within the range in the long axis a direction of the distal rigid portion 15 of the endoscope 10 attached (combined) to the rigid sheath 2.
  • the endoscope 10 combined with the rigid sheath 2 is such that the diameter of the portion where the distal end hard portion 15 is disposed is the largest in the range from the proximal end to the distal end of the insertion portion 11. It is configured (the part indicated by the symbol F in FIG. 3).
  • the O-ring 26 is set so as to be in pressure contact with the largest diameter portion of the distal end hard portion 15. At this time, the O-ring 26 is brought into pressure contact with the large-diameter portion of the distal end hard portion 15, thereby watertight between the inner peripheral surface of the insertion portion insertion hole 3 h of the rigid sheath 2 and the outer peripheral surface of the insertion portion 11. Ensure sex.
  • a step D is formed between the rigid sheath 2 and the outer peripheral surface of the insertion portion 11, but as described above, an O-ring 26 is disposed between the rigid sheath 2 and the insertion portion 11. It is installed.
  • the O-ring 26 is disposed so as to protrude slightly forward from the distal end surface of the rigid sheath 2.
  • the distal end portion of the rigid sheath 2 is formed with an inclined surface (taper surface) 3a in which the outer diameter of the rigid sheath 2 gradually decreases toward the front. .
  • the O-ring 26 When the O-ring 26 is brought into a pressure contact state between the inner peripheral surface of the rigid sheath 2 and the outer peripheral surface of the insertion portion 11, the O-ring 26 is disposed at a position along the inclined surface 3a.
  • the O-ring 26 (ring-shaped seal portion) has an enlarged diameter portion whose outer diameter increases from the distal end side to the proximal end side, and the outer diameter of the distal end portion of the rigid sheath 2. Can be said to be formed following the outer peripheral shape of the enlarged diameter portion of the O-ring 26.
  • the O-ring 26 is disposed so as to eliminate the step D. This secures a smooth insertion property in a state where the endoscope 10 is attached to the rigid sheath 2 and contributes to an improvement in the insertion property. Further, by providing the O-ring 26 at this site, the O-ring 26 protects the edge portion formed by the inclined surface 3a on the distal end surface of the rigid sheath 2.
  • FIG. 4 shows another modification of the arrangement of the sealing member (O-ring 26).
  • the O-ring 26 is fixed to the inner peripheral surface of the insertion portion insertion hole 3 h so as not to protrude from the distal end surface of the rigid sheath 2.
  • the O-ring 26 is disposed so as to be in pressure contact with the vicinity of the large diameter portion of the distal end hard portion 15 of the endoscope 10.
  • the outer shape of the O-ring 26 is formed so that the R portion of the outer line of the O-ring 26 continues smoothly to the inclined surface 3a. Even with such a configuration, similarly to the configuration shown in FIG. 3, it is possible to secure the watertightness between the rigid sheath 2 and the insertion portion 11 while eliminating the step D and ensuring smooth insertion. it can.
  • the O-ring 26 is fixed to the sheath body 3 side of the rigid sheath 2, but the present invention is not limited to this.
  • the O-ring 26 is attached to the distal end of the endoscope 10. It is good also as a structure fixed on the outer peripheral surface of the hard part 15. FIG.
  • FIG. 5 shows another modification of the sealing member.
  • a rubber member that covers the distal end hard portion 15 of the endoscope 10 is used as a sealing member is shown.
  • the diameter of the portion 15a having the largest diameter of the distal end rigid portion 15 is the insertion portion insertion hole 3h of the sheath body 3A of the rigid sheath 2. It is formed so as to be approximately equal to or slightly larger than the inner diameter of the distal end portion of the.
  • tip hard part 15 is coat
  • the tube member covers the proximal end portion of the distal end hard portion 15.
  • the said part comprises the form replaced with the said O-ring 26 (ring-shaped sealing member).
  • the large-diameter portion 15a of the distal end rigid portion 15 is sealed against the inner peripheral surface of the distal end portion of the insertion portion insertion hole 3h of the sheath body 3A of the rigid sheath 2.
  • the outer shape of the large-diameter portion 15a is formed so that the R portion in the outer shape line of the large-diameter portion 15a smoothly continues to the distal end surface of the sheath body 3A of the rigid sheath 2.
  • the endoscope 10 and the rigid sheath 2 are prepared. Then, the endoscope 10 is mounted in a form inserted through the rigid sheath 2. Next, the stopper member 8 is moved to the foremost side, and the pressing surface 7b of the second knob portion 7 is pressed and arranged on the outer surface of the endoscope mounting portion 4 (see FIG. 2A). Further, the contact surface 6 e of the contact member 6 is brought into contact with the contact surface on the proximal end side of the stopper member 8, and the pressing surface 5 b of the knob portion 5 is pressed against the outer surface of the endoscope mounting portion 4. It arrange
  • FIG. 6 is a diagram for explaining the procedure for attaching the rigid sheath to the endoscope in the operation of the endoscope system according to the present embodiment.
  • the connection portion between the endoscope 10 and the rigid sheath 2 is enlarged. It is a principal part enlarged view shown.
  • the user adjusts the position so that the opening of the engagement groove 4m is engaged with the shaft portion 19a of the water leakage detection base 19, and the main body
  • the pipe portion 4 ⁇ / b> A is brought closer to the shaft portion 19 a of the water leakage detection base 19.
  • the folding contact portion 4i contacts the folding portion 18 of the endoscope 10 inside the main body pipe portion 4A.
  • the user moves the main body pipe portion 4A against the elastic force of the anti-bending portion 18, and as shown in FIG. It pushes and moves so that 19 shaft parts 19a may be arranged.
  • the bend preventing portion 18 is gradually elastically deformed with the movement of the main body pipe portion 4A.
  • FIG. 6 (D) the shaft portion of the water leakage detection base 19 is placed in the deep portion of the groove spaced from the opening of the engagement groove 4m. 19a is arranged. Then, as shown in FIGS. 6D and 7, the engagement groove 4 m is engaged with the shaft portion 19 a of the water leak detection base 19, and the mounting of the rigid sheath 2 to the endoscope 10 is completed.
  • FIG. 7 is a side view showing a state where the rigid sheath 2 is attached to the endoscope 10.
  • the engagement groove 4m is constantly urged toward the distal end side of the insertion portion 11 by the elastic force of the folding stop portion 18, and is securely and stably fixed to the shaft portion 19a.
  • the operation portion disposing portion 4c is provided with a bend preventing covering portion 4j and a base disposing portion 4k, the base disposing portion 4k is provided with an engaging groove 4m, and the engaging groove 4m is leaked.
  • the rigid sheath 2 is configured to be attached to the endoscope 10 by being engaged with the shaft portion 19a of the detection base 19.
  • the attachment of the rigid sheath 2 to the endoscope 10 is not limited to the form as described above, that is, the form of engagement of the engagement groove 4m with the shaft portion 19a of the water leakage detection base 19.
  • a base other than the water leakage detection base 19 or a base that constitutes the treatment instrument insertion port 20 or the like is used as long as it is a convex portion protruding from the operation unit 12. Then, it may be configured to engage with the engaging groove 4m.
  • the operation portion disposing portion 4c is provided with the anti-bending covering portion 4j and the insertion base disposing portion, and the insertion base disposing
  • An engaging groove may be provided in the part, and the rigid sheath 2 may be attached to the endoscope 10.
  • the user checks whether or not the distal end surface of the sheath body 3 constituting the rigid sheath 2 is disposed at a predetermined position on the outer peripheral surface of the distal end rigid portion 15 of the insertion portion 11. .
  • FIG. 8 is a diagram for explaining the action of the stopper member.
  • the region 15 ⁇ / b> A is a region where the O-ring 26 provided at the distal end portion of the rigid sheath 2 is disposed so as to be in pressure contact with the large diameter portion of the distal end hard portion 15. This region is referred to as a seal region, for example.
  • the user After adjusting the arrangement position, the user (user) adjusts the screwing state of the knob portion 5 to press and place the pressing surface 5b on the outer surface of the endoscope mounting portion 4, and also screws the second knob portion 7.
  • the fitting state is adjusted and the pressing surface 7b is pressed and arranged on the outer surface of the endoscope mounting portion 4 to complete the mounting operation.
  • the user adjusts the screwing state of the knob portion 5 so that a gap is provided between the pressing surface 5 b and the outer surface of the endoscope mounting portion 4, and the contact member 6. Is moved backward to check whether the bending portion 16 and the passive bending portion 22 are completely exposed.
  • the user sets the position to the user (user).
  • a notification member is stuck on the outer surface of the sheath length adjusting portion 4B.
  • the user brings the contact surface 6e of the contact member 6 into contact with the contact portion of the stopper member 8 again.
  • the pressing surface 5b of the knob portion 5 is pressed and arranged on the outer surface of the endoscope mounting portion 4, and the mounting operation is completed.
  • the user uses the endoscope system 1 to move the insertion portion 11 of the endoscope 10 to which the sheath body 3 of the rigid sheath 2 is attached, for example, in order to observe the inside of the kidney. It is inserted into the ureter and introduced into the kidney. At this time, since the soft insertion portion 11 is covered with the sheath body 3 and hardened, the distal end hard portion 15 of the insertion portion 11 is smoothly introduced into the kidney.
  • the user adjusts the screwing state of the knob portion 5 to adjust the pressing surface 5 b and the endoscope mounting portion 4.
  • the abutting member 6 is moved backward so that the bending portion 16 and the passive bending portion 22 are completely exposed.
  • the user appropriately operates the bending operation lever 21 to perform the bending operation of the bending portion 16 to perform observation or treatment in the kidney.
  • the user removes the insertion portion 11 of the endoscope 10 to which the rigid sheath 2 is attached from the ureter and ends the endoscopic procedure.
  • a sealing region is formed by providing the O-ring 26 which is a sealing member made of an elastic member on the inner peripheral side of the distal end portion of the rigid sheath 2, and this O-ring. 26 eliminates a step portion that may be generated between the hard sheath 2 and the outer peripheral surface of the distal end hard portion 15 of the insertion portion 11 of the endoscope 10 that is inserted and disposed inside the hard sheath 2. A watertight structure is formed.
  • the endoscope system 1 of the present embodiment if it is applied as, for example, a nephroscope, the operability equivalent to that of a conventional rigid endoscope can be obtained until reaching the kidney. After reaching the kidney, it is possible to obtain operability equivalent to that of a conventional flexible endoscope.
  • the distal end hard portion of the endoscope 10 with respect to the distal end portion of the rigid sheath 2.
  • the outer peripheral surface of 15 is securely gripped. Therefore, by this, when a push-pull operation or a rotation operation on the proximal side of the rigid sheath 2 is performed, the distal end side of the endoscope 10 can be made to act reliably according to the performed operation, When used as a rigid endoscope in which the rigid sheath 2 and the endoscope 10 are integrated, it is possible to obtain the same usability as a conventional rigid endoscope.
  • the O-ring 26 disposed in the seal region is pressed between the inner peripheral surface of the rigid sheath 2 and the outer peripheral surface of the distal end hard portion 15 of the endoscope 10 to be elastically deformed.
  • the O-ring 26 can function as a protective member that covers and protects the edge portion formed on the distal end surface of the rigid sheath 2 while elastically deforming to eliminate the step between them.
  • the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications and applications can be implemented without departing from the spirit of the invention.
  • the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if several constituent requirements are deleted from all the constituent requirements shown in the above-described embodiment, if the problem to be solved by the invention can be solved and the effect of the invention can be obtained, this constituent requirement is deleted.
  • the configured structure can be extracted as an invention.
  • constituent elements over different embodiments may be appropriately combined.
  • the present invention can be applied not only to an endoscope control device in the medical field but also to an endoscope control device in the industrial field.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
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  • Heart & Thoracic Surgery (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
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  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
PCT/JP2015/056319 2014-06-24 2015-03-04 内視鏡システム WO2015198641A1 (ja)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111918595A (zh) * 2018-03-29 2020-11-10 奥林巴斯株式会社 插入器具

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022227364A1 (zh) * 2021-04-26 2022-11-03 海泽临床成果转化医学研究院(无锡)有限公司 一种兼具硬性和软性内镜功能的手术内窥镜

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1043129A (ja) * 1996-08-02 1998-02-17 Olympus Optical Co Ltd 内視鏡
JPH11332868A (ja) * 1998-05-25 1999-12-07 Olympus Optical Co Ltd 超音波診断装置
JP2000157487A (ja) * 1998-11-30 2000-06-13 Fuji Photo Optical Co Ltd 内視鏡挿入ガイド管
JP2012045328A (ja) * 2010-08-30 2012-03-08 Fujifilm Corp 内視鏡及び外套管並びに内視鏡システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1043129A (ja) * 1996-08-02 1998-02-17 Olympus Optical Co Ltd 内視鏡
JPH11332868A (ja) * 1998-05-25 1999-12-07 Olympus Optical Co Ltd 超音波診断装置
JP2000157487A (ja) * 1998-11-30 2000-06-13 Fuji Photo Optical Co Ltd 内視鏡挿入ガイド管
JP2012045328A (ja) * 2010-08-30 2012-03-08 Fujifilm Corp 内視鏡及び外套管並びに内視鏡システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111918595A (zh) * 2018-03-29 2020-11-10 奥林巴斯株式会社 插入器具

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