WO2013099390A1 - Endoscope - Google Patents

Endoscope Download PDF

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Publication number
WO2013099390A1
WO2013099390A1 PCT/JP2012/075938 JP2012075938W WO2013099390A1 WO 2013099390 A1 WO2013099390 A1 WO 2013099390A1 JP 2012075938 W JP2012075938 W JP 2012075938W WO 2013099390 A1 WO2013099390 A1 WO 2013099390A1
Authority
WO
WIPO (PCT)
Prior art keywords
raising
rotating member
rotating
treatment instrument
endoscope
Prior art date
Application number
PCT/JP2012/075938
Other languages
English (en)
Japanese (ja)
Inventor
淳司 角藤
Original Assignee
オリンパスメディカルシステムズ株式会社
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 オリンパスメディカルシステムズ株式会社 filed Critical オリンパスメディカルシステムズ株式会社
Publication of WO2013099390A1 publication Critical patent/WO2013099390A1/fr

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Classifications

    • 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
    • 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
    • A61B1/00066—Proximal part of endoscope body, e.g. handles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00098—Deflecting means for inserted tools
    • 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
    • A61B1/00131—Accessories for endoscopes
    • A61B1/00133—Drive units for endoscopic tools inserted through or with the endoscope

Definitions

  • the present invention relates to an endoscope provided with a movable part and an operation means for operating the movable part via a traction means.
  • endoscopes have been widely used in the medical field.
  • Some endoscopes used in the medical field are provided with a treatment instrument insertion channel through which a treatment instrument can be inserted so that treatment such as treatment can be performed with the treatment instrument.
  • a side endoscope used for ERCP Endoscopic Retrograde Cholangio-Pancreatography
  • ERCP Endoscopic Retrograde Cholangio-Pancreatography
  • an endoscope cover with a channel disclosed in Japanese Unexamined Patent Publication No. 7-11967.
  • the endoscope cover with a channel described in Japanese Patent Laid-Open No. 7-11967 is a movable part, and a treatment instrument guide member that is a treatment instrument raising base that changes the protruding direction of the treatment instrument that protrudes from the distal end opening;
  • One end of the treatment instrument guide member is attached to the treatment instrument guide member and a wire for driving the treatment instrument guide member.
  • the endoscope cover with a channel covers at least the insertion portion of the endoscope, and the other end of the wire is connected to the endoscope.
  • an endoscope having a treatment instrument raising base pulls a single wire connected to the treatment instrument raising base by a raising operation means, as described in Japanese Patent Laid-Open No. 7-11967. Or by pushing out in the direction opposite to the pulling direction, the treatment instrument raising base protruding from the distal end side of the insertion portion and contacting the side surface of the treatment instrument is rotated to rotate the treatment instrument. The protruding direction is changed.
  • the raising operation means is structurally raised at any position between the raising start state and the raising end state of the treatment instrument raising base.
  • the rotation operation amount (operation angle) of the operation means and the stroke (movement amount) of the raising wire are in a substantially proportional relationship. That is, in the state where the treatment tool elevator is not loaded, the amount of operation force applied to the raising operation means for raising the treatment instrument elevator is raised from the state where the treatment instrument elevator starts to rise and finishes. It is substantially constant at any position during the state.
  • the treatment instrument raising base comes into contact with the treatment instrument in order to raise the treatment instrument.
  • the treatment instrument generally has a substantially linear shape in an unloaded state where no external force is applied. Since this treatment instrument is bent as it is raised by the treatment instrument raising base, a reaction force that returns to a substantially linear shape is generated. Since the load (reaction force) by the treatment tool is applied to the treatment tool raising base, the amount of operation force by the raising operation means connected through one raising wire as the treatment tool raising base is raised. Becomes heavy.
  • the load applied to the upper base also increases, and the amount of operation force by the raising operation means becomes heavy.
  • the movable portion provided in the insertion portion of the endoscope is remotely operated by the operation means via a pulling member such as a wire, and the pulling means is pulled. , There are things that increase the reaction force.
  • a lens driving mechanism that drives a lens provided at the distal end of the insertion portion of the endoscope.
  • a movable lens provided at the tip of the insertion portion of the endoscope for example, for zooming the observation field of view of the observation optical system and for changing the illumination range of the illumination optical system, for example Is remotely operated by an operation means provided in the operation unit, for example.
  • the movable lens is mounted on the distal end of the insertion portion of the endoscope in a lens frame that can move in the optical axis direction of the movable lens.
  • This lens frame is generally attached to the distal end side of the insertion portion (in the optical axis direction). It is pressed against the subject side) by an elastic member such as a spring.
  • This lens frame is moved by a moving operation means having the same configuration as the above-described raising operation means via a pulling means such as a wire. Also in this case, the reaction force of the elastic member increases as the traction means is pulled, the moment applied to the moving operation means increases, and the amount of operation force increases according to the traction amount.
  • the reaction force increases as the traction means is pulled
  • a hardness variable mechanism that varies the hardness of the insertion portion of the endoscope.
  • the coil spring extending in the axial direction of the insertion portion in the insertion portion of the endoscope is compressed from a relaxed state by pulling a pulling member such as a wire, and the bending rigidity of the coil spring is varied. As a result, the bending rigidity of the insertion portion is varied.
  • the reaction force of the coil spring increases as the traction means is pulled, and the operation force amount of the moving operation means increases according to the traction amount.
  • An object of the present invention is to provide an endoscope capable of improving the operability of moving the traction member forward and backward without greatly changing the amount of operation force for moving the traction member back and forth.
  • the endoscope according to one aspect of the present invention is extended in the insertion portion so as to be movable in the axial direction of the insertion portion in order to transmit a driving force to a movable portion provided on the distal end side of the insertion portion.
  • the endoscope includes a pulling member and an operation mechanism that is provided on a proximal end side with respect to the insertion portion and moves the pulling member in the insertion portion forward and backward in the axial direction.
  • a rotating member engaged with a member that is rotatable about a rotating shaft according to a driving force from a source, and that has a moving path connecting a portion that is close to the rotating shaft and a portion that is separated from the rotating shaft.
  • a rotating member provided with a joint portion; and a pulling member holding portion having an engaging portion that holds the pulling member and engages with the rotating member engaged portion so as to be movable along the moving path.
  • the rotating member rotates in the first direction
  • the traction member is pushed out through the combined traction member holding portion and rotated in the second direction, thereby pulling the traction member through the engaged traction member holding portion
  • the insertion portion is advanced and retracted in the axial direction, and the operation mechanism portion further moves the engagement portion toward the rotation shaft as the rotating member rotates in the second direction, and rotates the rotation portion.
  • an engaging portion moving mechanism that moves the engaging portion in a direction away from the rotation shaft as the member rotates in the first direction.
  • FIG. 1 The perspective view which shows the whole structure of the endoscope which concerns on the 1st Embodiment of this invention.
  • tip part of the endoscope of FIG. 1 is an exploded perspective view for explaining the configuration of a proximal drive mechanism provided in the operation unit of FIG.
  • the top view of the proximal end drive mechanism part of FIG. 4 which shows the state at the time of starting raising of a treatment tool raising stand
  • the top view of the proximal end drive mechanism part of FIG. 4 which shows the state at the time of raising completion of a treatment tool raising stand AA line sectional view of FIG.
  • FIG. 11 The top view of the proximal end drive mechanism part of FIG. 11 which shows the state at the time of starting raising of a treatment tool raising stand
  • the top view of the proximal end drive mechanism part of FIG. 11 which shows the state at the time of completion of raising of the treatment tool raising base DD sectional view of FIG. EE sectional view of FIG. FF sectional view of FIG. GG sectional view of FIG.
  • the disassembled perspective view for demonstrating the structure of the base end drive mechanism part provided in the operation part of the endoscope according to the second embodiment of the present invention The perspective view which shows the base end drive mechanism part of the state assembled from the decomposition
  • FIG. 19 is a plan view of the proximal end drive mechanism portion of FIG. 19, showing a large reaction force from the treatment instrument and a state when the raising of the treatment instrument raising base is completed.
  • FIG. 19 which shows the state where the reaction force from the treatment tool added on treatment tool raising is small HH sectional view of FIG.
  • the top view of the proximal end drive mechanism part of FIG. 25 which shows the state at the time of starting raising of a treatment tool raising stand
  • the top view of the base end drive mechanism part of FIG. 25 which shows the state with the small reaction force from the treatment tool added on treatment tool raising.
  • FIG. 25 is a plan view of the proximal end drive mechanism portion of FIG.
  • FIG. 1 is a perspective view showing the overall configuration of the endoscope according to the first embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing the configuration of the distal end portion of the endoscope of FIG.
  • the endoscope 1 of the present embodiment is configured as a side-view endoscope, for example, and includes an insertion portion 2 and an operation portion 3.
  • a universal cord 4 having a light guide fiber or the like installed therein is connected to the operation unit 3.
  • the insertion portion 2 is configured by connecting a distal end portion 5, a bending portion 6, and a flexible tube portion 7 in order from the distal end.
  • the operation unit 3 is provided on the forceps port 9 disposed on the side to which the proximal end of the anti-bending part 8 of the insertion unit 2 is connected, the grip part 10 in the middle part, and the upper side of the grip part 10.
  • the forceps port 9 communicates with the channel opening 18 via the treatment instrument insertion channel 22 disposed in the insertion portion 2 (see FIG. 2).
  • FIG.1 and FIG.2 The distal end portion 5 shown in FIG. 1 is provided with an observation opening 17 and a channel opening 18.
  • the observation opening 17 is provided with a transparent cover glass. Although not shown, an observation window and an illumination window are arranged side by side inside the distal end portion 5 and irradiated with illumination light toward the test site. The observation site can be observed.
  • a treatment instrument raising base 24 which is a movable part, is disposed.
  • the distal end portion 5 has a distal end rigid portion 20 as shown in FIG.
  • the distal end rigid portion 20 is formed of a hard resin or the like, and is provided with a channel distal end space portion 18 a communicating with the treatment instrument insertion channel 22.
  • the distal end portion of the channel distal end space portion 18 a is connected via the channel opening portion 18. It opens to the outside.
  • the outer periphery of the distal end portion 5 from the rear end side to the proximal end side of the distal end hard portion 20 is covered with a cover skin 21.
  • the distal end portion of the channel tube 23 constituting the treatment instrument insertion channel 22 is inserted. That is, the channel tube 23 has a distal end connected to the distal end rigid portion 20 and communicates with a channel distal end space 18 a provided in the distal end rigid portion 20.
  • a treatment instrument raising base 24 for raising a treatment instrument 29 inserted through the treatment instrument insertion channel 22 is rotatably installed.
  • the treatment instrument elevator base 24 is pivotally supported by a rotary shaft 25 so that the treatment tool elevator base 24 can rotate in the channel distal end space portion 18a around the proximal end portion.
  • a raising wire 26 for raising and lowering the treatment instrument raising base 24 is connected to the distal end portion of the treatment instrument raising base 24.
  • the raising wire 26 constitutes a pulling member and passes through the wire tube 27 connected to the distal end rigid portion 20 and extends to the operation portion 3 side through the insertion portion 2 (not shown). Yes.
  • the proximal end of the raising wire 26 is connected to the raising operation lever 13 which is an operation member.
  • the raising operation lever 13 of the operation unit 3 causes the one raising wire 26 connected to the treatment instrument raising base 24 to be pulled or pushed out, so that the raising wire 26 is moved back and forth in the axial direction.
  • operating means that is connected to the raising wire 26 directly or via a connecting member in the operation portion 3 of the endoscope 1 and advances and retracts the raising wire 26 in the insertion portion 2.
  • the base end drive mechanism part 30 which comprises an operation mechanism part is provided.
  • FIGS. 3 is an exploded perspective view for explaining the configuration of the proximal drive mechanism provided in the operation section of FIG. 1, and FIG. 4 is a proximal drive mechanism assembled from the exploded state of FIG.
  • FIG. 5 is a plan view of the proximal end drive mechanism portion of FIG. 4 showing a state at the start of raising the treatment instrument raising base
  • FIG. 6 is a diagram when the raising of the treatment instrument raising base is completed.
  • 4 is a plan view of the proximal end drive mechanism portion of FIG. 4
  • FIG. 7 is a partial sectional view taken along line AA in FIG. 5
  • the proximal end drive mechanism unit 30 constituting the operation means or the operation mechanism unit includes a rotation member 34, a coupling lever 32, an engagement pin 40, a fixed cam groove 41, an engagement member. And a joint moving mechanism.
  • the rotating member 34 is provided so as to be rotatable about the rotation axis O in accordance with the driving force from the driving source, and is provided with a rotating cam groove 36 which is an engaged portion having a moving path in the rotation radius direction. It is a disk member.
  • the connecting lever 32 is an engaging portion that holds the raising wire 26 directly or indirectly and engages with the rotating cam groove 36 so as to be movable along a moving path provided in the rotational radial direction of the circular rotating member 34. One end is fixed by an engagement pin 40.
  • the rotating member 34 has a disk shape, but the present invention is not limited to this, and the rotating member 34 may not be a disk shape as long as it is a member provided to be rotatable around the rotation axis O.
  • the moving path of the rotating cam groove 36 is provided in the rotational radius direction.
  • the moving path is not limited to this, and is a moving path that connects a portion that is close to the rotating shaft O and a portion that is separated from the rotating shaft O. If it exists, it does not need to be in the direction of the rotation radius, and may be a shape that allows the engagement pin 40 to move smoothly even if it is not linear.
  • the engaging pin 40 constitutes a wire holding part which is a pulling member holding part.
  • the fixed cam groove 41 is provided in the fixed plate 35.
  • the engaging portion moving mechanism moves the engaging pin 40 toward the rotation axis O as the rotating member 34 rotates in a direction in which the raising wire 26 is retracted toward the proximal end side of the insertion portion 2.
  • the engagement pin 40 moves in a direction away from the rotation axis O.
  • the proximal drive mechanism 30 includes a piston rod 31, a connecting lever 32 that constitutes a connecting member, a guide member 33, a rotating member 34, and a fixed plate. 35.
  • the proximal end side of the raising wire 26 inserted into the insertion portion 2 is fixed to the insertion portion 2 side (left side in FIG. 4) end of the piston rod 31 (not shown).
  • the piston rod 31 is a connection member formed in a U shape.
  • the piston rod 31 is provided on the side opposite to the side on which the raising wire 26 is fixed, and is provided with a recess 31b for rotatably connecting the distal end side of the connecting lever 32, and above and below the recess 31b. And an insertion hole 31a for inserting the pin 37.
  • connection lever 32 is a bar member formed in a plate shape, and connection holes 32a and 32b for connection are provided on the distal end side and the proximal end side, respectively.
  • the guide member 33 is a guide member that is integrally formed on the upper surface of the fixed plate 35 on the insertion portion 2 side and that guides the movement of the piston rod 31.
  • the guide member 33 movably guides the guide groove 42 for engaging and guiding the piston rod 31 in the longitudinal direction and the connecting lever 32 connected to the piston rod 31, and the connecting lever 32. And a guide opening 43 for restricting the movement of the.
  • the guide groove 42 is formed in a concave shape.
  • the guide member 33 is provided on the fixed plate 35 so that the opening side of the concave portion is positioned in the upper surface direction of the fixed plate 35 and the guide groove 42 extends along the longitudinal direction of the guide member 33.
  • the guide opening 43 is an opening provided on one side of the guide member 33 and provided in the longitudinal direction of the guide member 33. At the end of the opening on the insertion portion 2 side, a restricting portion 43a that abuts a part of the connecting lever 32 and restricts the movement position of the connecting lever 32 is provided.
  • the guide member 33 may be formed integrally with the fixed plate 35 without being formed as a separate member from the fixed plate 35.
  • the base end portion of the connecting lever 32 is rotatably attached to the rotating member 34.
  • the rotating member 34 has a screw hole 34 a for attaching the raising operation lever 13, a shaft hole 34 b, and a rotating cam groove 36.
  • the rotating member 34 is a plate-like member formed in a circular shape, and the shaft member 39 is inserted through the shaft hole 34 b, and the fitting portion 39 A of the shaft member 39 is fitted into the bearing hole 35 a of the fixed plate 35.
  • the shaft member 39 is rotatably attached to the fixed plate 35 with the rotation axis O at the center of the shaft member 39 as an axis (see FIGS. 4 and 8).
  • the raising operation lever 13 is fixed by a screw 38 at a position opposite to the rotating cam groove 36 of the rotating member 34.
  • the raising operation lever 13 is fixed to the rotating member 34 by inserting the screw 38 through the connection hole 13 a of the raising operation lever 13 and screwing it into the screw hole 34 a of the rotating member 34.
  • the shape of the raising operation lever 13 is not limited to the shape shown in the drawing.
  • the raising operation lever 13 may be formed in a shape that is easy to operate, for example, the shape of the knob on the proximal end side is an arc shape. good.
  • the rotating cam groove 36 constitutes an engaged portion, and is formed in an elongated hole shape from the inner periphery of the rotating member 34 toward the rotating shaft O on the plane of the rotating member 34 orthogonal to the rotating shaft O. It is a cam groove.
  • the fixed plate 35 is a plate-like plate fixed in the operation unit 3. As described above, the fixed plate 35 is provided with the guide member 33 on the upper surface on the insertion portion 2 side, and is provided with the bearing hole 35a and the fixed cam groove 41 on the proximal end side.
  • a base end portion of the coupling lever 32 is attached to a rotating member 34 that is rotatably attached to the fixed plate 35.
  • the rotation cam groove 36 of the rotation member 34 is positioned at a rotation position so as to match the fixed cam groove 41 of the fixed plate 35, and the connection hole 32 b of the connecting lever 32 is formed in the rotation cam groove 36 of the rotation member 34. Place them together. Thereafter, in this state, the engaging pin 40 is inserted through the fixed cam groove 41 and the rotating cam groove 36 from the back side of the fixing plate 35 as a fixing member, and the fitting portion 40a of the engaging pin 40 is connected. It fits in the connection hole 32b of the lever 32 (refer FIG.4 and FIG.8).
  • the engaging pin 40 is movable in the rotating cam groove 36 and the fixed cam groove 41 in a state where it is connected to the base end side of the connecting lever 32. That is, the base end portion of the coupling lever 32 can be driven in conjunction with the movement operation of the engagement pin 40.
  • the engaging pin 40 forms an engaging portion, and constitutes a protruding portion that is formed so as to be movable by engaging with the rotating cam groove 36.
  • the fixed cam groove 41 constitutes a second engaged portion of the engaging portion moving mechanism.
  • the fixed cam groove 41 engages with the engaging pin 40, and the engaged engaging pin 40 is on the distal end side of the insertion portion 2.
  • the cam groove provided in the fixed member formed so as to approach the rotation axis O as it goes from the base end side to the base end side, that is, as the engaged engagement pin 40 rotates around the rotation axis O. It is.
  • the shape of the fixed cam groove 41 is not limited to a substantially arc shape as shown in FIGS. 3, 5, and 6.
  • a desired shape such as a line segment or a quadratic curve may be used. It may be formed by being appropriately modified as necessary so as to obtain an upper operation force amount.
  • the proximal drive mechanism 30 that is the main part of the endoscope 1 of the present embodiment is assembled.
  • the engagement pin 40 engages with the rotation cam groove 36 of the rotation member 34 and the fixed cam groove 41 of the fixed plate 35, thereby As the rotating member 34 rotates in the direction in which the upper wire 26 is pulled toward the proximal end side of the insertion portion 2 (direction S1 shown in FIG. 5), the distance between the rotation axis O and the center of the engagement pin 40 is The engagement pin 40 moves toward the rotation axis O up to a distance L2 shown in FIG.
  • the relationship between the lengths of L1 and L2 is L1> L2, and the rotating cam groove 36 of the rotating member 34 moves the engaging pin 40 in the range of the distance between the rotating shaft O and the rotating shaft O from L2 to L1. It has a possible length.
  • the direction in which the raising wire 26 is pushed from the proximal end side to the distal end side of the insertion portion 2 is opposite to the S1 direction, as shown in FIG.
  • the direction in which the raising wire 26 is pushed from the proximal end side to the distal end side of the insertion portion 2 is opposite to the S1 direction, as shown in FIG.
  • This is the direction in which the piston rod 31 moves by the guide member 33.
  • the positions of the raising operation lever 13 and the positions of the connecting lever 32 and the engaging pin 40 shown in FIG. 5 correspond to the raising start position state (state shown in FIG. 2) of the treatment instrument raising base 24. It shall be.
  • the raising operation for rotating the treatment instrument raising base 24 using the raising operation lever 13 is performed. Shall be performed.
  • the engaging pin 40 located at the base end portion of the connecting lever 32 is engaged with the rotating cam groove 36 and the fixed cam groove 41, as shown in FIG. A position closest to the distal end side of the insertion portion within the movable range 40 and a position farthest from the rotation axis O within the range of the engagement pin 40 within the rotation cam groove 36 (a distance L1 substantially equal to the radius R of the rotation member 34). Is located.
  • the rotating member 34 When the surgeon rotates the raising operation lever 13 from the state shown in FIG. 5 in the direction of the arrow K shown in FIG. 5, the rotating member 34 is moved in the same direction as the raising operation lever 13 is operated. Rotate. Then, as described above, in the proximal drive mechanism 30, the engagement pin 40 moves from the distal end side to the proximal end side of the insertion portion along the shape of the fixed cam groove 41 as the rotation member 34 rotates. It moves toward the rotation axis O. As shown in FIG. 6, the rotation shaft within the movable range of the engaging pin 40 within the rotating cam groove 36 is located closest to the proximal end side of the insertion portion within the movable range of the engaging pin 40 within the fixed cam groove 41. It is located at a position closest to O (distance L2).
  • the base end portion of the connecting lever 32 is engaged with the rotating cam groove 36 and the fixed cam groove 41 by the engaging pin 40.
  • the rotary cam groove 36 is disposed at the most distant position within the range of the engagement pin 40 and away from the rotation axis O by the distance L1.
  • the engagement pin 40 is directed toward the rotation axis O depending on the shape of the fixed cam groove 41 until the raising end state corresponding to the raising completion position shown in FIG. Will be moved to.
  • the distance between the base end portion (engagement pin 40) of the coupling lever 32 and the rotary shaft O becomes shorter as the treatment instrument raising base 24 shifts from the start-up state to the start-up and end state.
  • the amount of traction force applied to the raising wire 26 by the rotating member 34 of the proximal drive mechanism 30 can be changed.
  • the treatment instrument raising base 24 rises from the start state to the end state and then moves to the end state. Since the distance between the base end portion (engagement pin 40) of the lever 32 and the rotation axis O becomes shorter, the moment applied from the raising wire 26 to the rotating member 34 becomes smaller, and the raising wire 26 is pulled. Therefore, the minimum necessary amount of operating force applied to the rotating member 34 of the proximal end drive mechanism 30 can be made gradually smaller than the state where it starts to rise. In particular, in the rising end state, the distance between the base end portion (engagement pin 40) of the connecting lever 32 and the rotation axis O is the shortest, and the distance L2 is reached, and the raising wire 26 is pulled. Become.
  • the surgeon rotates the raising operation lever 13 from the state shown in FIG. 6 in the direction opposite to the arrow K direction shown in FIG. If it is assumed to be turned upside down, the rotating member 34 also rotates in the same direction as the raising operation lever 13 is operated.
  • the engagement pin 40 moves in a direction away from the rotation axis O due to the shape of the fixed cam groove 41 as the rotation member 34 rotates. become.
  • the proximal drive mechanism 30 when the raising operation lever 13 is rotated in the raising direction, the distance between the rotation axis O of the rotating member 34 and the proximal end of the connecting lever 32 is gradually increased. Therefore, the amount of traction force transmitted to the raising wire 26 via the connecting lever 32 can be gradually increased without changing the amount of operation force applied to the operation lever 13 (rotating member 34). As the reaction force by the treatment tool 29 through the upper wire 26 increases, the amount of operation force for rotating the raising operation lever 13 does not increase greatly.
  • the distance between the base end portion of the connecting lever 32 and the rotation axis O changes according to the raising angle of the treatment instrument raising base 24, when the raising angle is small, that is, in the state where the raising starts. A sufficient stroke of the raising wire 26 can be ensured.
  • the raising angle is large, that is, in the raising end state, the operation force amount of the raising operation lever 13 does not increase greatly.
  • the reaction force applied to the rotating member 34 via the raising wire 26 is the largest, but the distance between the base end portion of the connecting lever 32 and the rotation axis O is the smallest. Even if the diameter of the instrument 29 is large or the bending rigidity of the treatment instrument 29 is large and the load applied to the treatment instrument raising base 24 is increased, the raising operation does not become heavy. Further, since the operation force amount of the raising operation lever 13 can be lowered in the raising end state, for example, in the inspection method such as ERCP, the raising state is set at a desired position where the treatment instrument raising stand is most raised. Even if it is necessary to maintain, the rising state can be easily maintained without a large lifting operation force.
  • the structure is such that the moment applied to the rotating member 34 of the proximal end drive mechanism unit 30 connected to the raising wire is changed in accordance with the advancement and retraction operation of the raising wire.
  • the amount of operating force for pulling the wire can be reduced, and the raising operability can be improved.
  • the raising operation lever 13 is manually operated in order to rotationally drive the rotating member 34.
  • the rotating member 34 may be directly or indirectly connected to the rotating member 34. It may be driven to rotate using a driving means such as a motor connected via a gear or the like.
  • FIG. 10 shows a first modification of the base end drive mechanism portion of the first embodiment, and is an exploded perspective view for explaining the configuration of the base end drive mechanism portion, and FIG. 11 is assembled from the disassembled state of FIG.
  • FIG. 12 is a plan view of the proximal end drive mechanism portion of FIG. 11 showing a state at the start of raising the treatment instrument raising base
  • FIG. 13 is a treatment instrument.
  • FIG. 14 is a plan view of the proximal end drive mechanism portion of FIG. 11 showing the state when the raising of the elevator stand is completed
  • FIG. 14 is a cross-sectional view taken along line DD of FIG. 12
  • FIG. 16 is a cross-sectional view taken along line FF in FIG. 12
  • FIG. 17 is a cross-sectional view taken along line GG in FIG.
  • FIG. 10 to FIG. 17 the same components as those of the apparatus of the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different portions are described.
  • the proximal-end drive mechanism 30 in the endoscope 1 of this modification does not directly provide the fixed cam groove 41 on the fixed plate 35, but integrates the fixed portion 50 having the fixed cam groove 41 on the surface of the fixed plate 35. Further, a guide portion 52 is provided in place of the rotating cam groove 36 of the rotating member 34, and an engaging portion 51a engaged with and guided by the guide portion 52 is provided in place of the engaging pin 40. An engagement pin 51 provided is provided.
  • the fixing portion 50 has, for example, a circular shape that is formed to have substantially the same size (same radius R) as the rotating member 34, and is formed integrally with the fixing plate 35.
  • the fixed cam groove 41 is formed to penetrate from the fixed portion 50 to the fixed plate 35.
  • a convex step portion 50 ⁇ / b> A is formed in the vicinity of the center of the fixed portion 50.
  • the fixing portion 50 may be configured as a separate member and fixed to the fixing plate 35 without being configured integrally with the fixing plate 35.
  • a guide portion 52 having a moving path in the rotational radius direction is provided so as to be aligned with the rotating cam groove 36 (see FIG. 3) in the first embodiment.
  • the guide portion 52 is a substantially rectangular guide member provided so as to protrude to the back side of the rotating member 34 (see FIG. 10).
  • the guide portion 52 is formed in accordance with the length of the rotating cam groove 36, but may be extended to the vicinity of the shaft hole 34b of the rotating member 34.
  • the engaging pin 51 that engages with the guide portion 52 has an engaging portion 51a having a concave guide groove 51b that engages with the guide portion 52 so as to be movable along the movement path.
  • a fitting portion 51c for fitting and fixing to the nut 51d is formed at the end of the engaging pin 51 opposite to the engaging portion 51a.
  • the movement path of the guide portion 52 is provided in the rotation radius direction.
  • the movement path is not limited to this, and may be a movement path that connects a portion close to the rotation axis O and a portion separated from the rotation axis O.
  • the shape may not be in the rotational radius direction, and may be a shape that allows the guide groove 51b of the engagement pin 51 to move smoothly even if it is not linear.
  • the engaging pin 51 is inserted from the back side of the rotating member 34 through the connection hole 32b of the base end portion of the connecting lever 32 and the fixed cam groove 41, and the engagement pin 51 is inserted from the back side of the fixed plate 35.
  • a nut 51d is fitted and fixed to the fitting portion 51c of the mating pin 51 (see FIGS. 15 and 17).
  • the shaft member 39 is inserted from the shaft hole 34b of the rotating member 34 as in the above embodiment, The fitting portion 39A of the shaft member 39 is fitted into the bearing hole 50B of the step portion 50A of the fixing portion 50 (see FIG. 15).
  • the rotating member 34 is rotatably attached to the fixing portion 50 of the fixing plate 35 about the rotation axis O at the center of the shaft member 39, and at the same time, the engaging pin 51 is connected to the connecting lever.
  • the guide portion 52 and the fixed cam groove 41 can be moved while being connected to the base end side of 32. That is, the base end portion of the connecting lever 32 can be driven in conjunction with the movement operation of the engagement pin 51.
  • Other configurations are the same as those of the above embodiment.
  • the proximal end drive mechanism 30 of the endoscope 1 includes an engagement pin 51 having a guide portion 52 of the rotating member 34, and a fixed cam groove 41 of the fixed portion 50.
  • the proximal drive mechanism 30 has a rotational axis as the rotating member 34 rotates in a direction in which the raising wire 26 is pushed from the proximal end side to the distal end side of the insertion portion 2 (SO direction shown in FIG. 12).
  • the engagement pin 51 moves in a direction away from the rotation axis O until the distance between O and the center of the engagement pin 51 becomes a distance L1 shown in FIG.
  • the distance between the base end portion of the connecting lever 32 and the rotation axis O changes according to the raising angle of the treatment instrument raising base 24, when the raising angle is small, that is, in the state where the raising starts. A sufficient stroke of the raising wire 26 can be ensured.
  • the raising angle is large, that is, in the raising end state, the operation force amount of the raising operation lever 13 does not increase.
  • the reaction force applied to the rotating member 34 via the raising wire 26 is the largest, but the distance between the base end portion of the connecting lever 32 and the rotation axis O is the smallest. Even if the diameter of the treatment instrument 29 is large or the bending rigidity of the treatment instrument 29 is large and the load applied to the treatment instrument raising base 24 is increased, the raising operation does not become heavy.
  • the raising state is at a desired position where the treatment tool raising stand rises most. Even if it is necessary to maintain the state, it is possible to easily maintain the raised state without a large raising operation force.
  • the endoscope 1 includes the proximal end drive mechanism portion 30, so that the raising wire stroke is performed regardless of the reaction force from the treatment instrument 29 whose projection direction is changed by the treatment instrument raising base 24.
  • Such an embodiment is shown in FIGS.
  • FIG. 18 to 23 relate to the first embodiment of the present invention
  • FIG. 18 is an exploded perspective view for explaining the configuration of the proximal end drive mechanism provided in the operation unit of the endoscope of the present embodiment
  • 19 is a perspective view showing the proximal drive mechanism part assembled from the disassembled state of FIG. 18, and FIG. 20 is a proximal end of FIG. 19 showing a state at the start of raising the treatment instrument raising base.
  • FIG. 21 is a plan view of the drive mechanism section
  • FIG. 21 is a plan view of the proximal end drive mechanism section of FIG. 19, showing a large reaction force from the treatment instrument when the treatment instrument raising base is completely raised
  • FIG. FIG. 19 is a plan view of the proximal end drive mechanism portion of FIG. 19 showing a state where the reaction force from the treatment instrument 29 applied on the device is small
  • FIG. 23 is a sectional view taken along the line HH of FIG. .
  • the endoscope 1 changes the configuration of the proximal end drive mechanism unit 30, so that the operation force amount by the raising operation lever 13 connected to the raising wire 26 based on the reaction force from the treatment tool 29. It is configured to change.
  • the engagement portion moving mechanism included in the proximal end drive mechanism portion 30 of the present embodiment is a spring 60 that is an elastic member that urges the engagement pin 40 in a direction away from the rotation axis O.
  • the proximal end drive mechanism unit 30 is configured such that when the rotating member 34 rotates in the direction in which the raising wire 26 is pulled toward the proximal side of the insertion portion 2, the raising wire 26 in the direction in which the rotating cam groove 36 is formed.
  • the reaction force acting on the engagement pin 40 from 26 becomes larger than the elastic force by the spring 60, the engagement pin 40 is moved toward the rotation axis O.
  • a protrusion 36 a for locking one end of the spring 60 is provided on the inner surface of the rotating cam groove 36 on the rotating shaft O side. Further, there is provided a sliding locking member 61 that locks the other end of the spring 60 and is movable in the rotary cam groove 36.
  • the sliding locking member 61 has an insertion hole 61 a through which the engagement pin 40 is inserted.
  • the fixed plate 35 is provided with a cam opening 62 instead of the fixed cam groove 41.
  • the cam opening 62 is configured to have a space portion in order to prevent contact with the engagement pin 40. For this reason, the cam opening 62 can freely move the engagement pin 40 using the space portion.
  • the cam opening 62 is a hole provided in the fixed plate 35.
  • the engagement pin 40 and the fixed plate 35 may not be in contact with each other, and may be cut out.
  • the base end portion of the connecting lever 32 is attached to the rotating member 34, the base end side of the spring 60 is locked to the protrusion 36 a of the rotating cam groove 36 in advance, and at the same time, the elastic force of the spring 60 is set.
  • the spring 60 and the sliding engagement member 61 are disposed in the rotating cam groove 36 in a state where the tip end side of the spring 60 is brought into contact with the sliding engagement member 61 using the.
  • the engaging pin 40 is inserted from the back side of the fixed plate 35, the cam opening 62, the insertion hole 61 a of the sliding engagement member 61 disposed in the rotating cam groove 36, and the base of the coupling lever 32.
  • the nut 40c is inserted from the upper side through the connection hole 32b at the end, and fixed to the fitting portion 40a of the engaging pin 40 from above (see FIGS. 18 and 23).
  • the rotating member 34 is attached in the same manner as in the above embodiment.
  • the guide groove 42 is provided so as to be located on the same side as the rotation axis O in the groove direction (longitudinal direction of the guide member 33) or on the proximal end side of the insertion portion, and the end surface is raised.
  • the rotating member 34 rotates in a direction in which the upper wire 26 is pulled toward the proximal end side of the insertion portion 2, the range does not exceed the rotation axis O in the direction orthogonal to the groove direction of the guide groove 42 (longitudinal direction of the guide member 33). It is provided so that it may be located in.
  • the rotating member 34 is rotatably attached to the fixed plate 35 about the rotation axis O at the center of the shaft member 39, and at the same time, the engaging pin 40 is connected to the base end of the connecting lever 32.
  • the inside of the rotating cam groove 36 can be moved while being connected to the side. That is, the base end portion of the connecting lever 32 can be driven in conjunction with the movement operation of the engagement pin 40 as in the above embodiment.
  • the spring 60 separates the sliding locking member 61 from the rotation axis O of the rotating cam groove 36 when the treatment instrument raising base 24 is inverted and the reaction force of the treatment instrument 29 is not related to the raising wire 26. It has elastic force to press and abut against the side end face.
  • the spring 60 is raised from the load applied to the spring 60 in the direction of the rotation axis O by the reaction force of the treatment tool 29 and the engagement pin 40 via the sliding engagement member 61 due to the reaction tool 29 being raised. Also has a small elastic force. This elastic force is set by the thickness and bending rigidity of the treatment instrument used.
  • the spring 60 cancels the elastic force of the spring 60 and detects the thickness, bending rigidity, or bending state of the treatment instrument 29 according to the load that compresses the spring 60, and the degree of compression changes. Is. That is, when the load acting on the engagement pin 40 in the direction of the rotation axis O becomes larger than the elastic force by the spring 60 due to the reaction force from the raising wire 26 in the proximal drive mechanism 30, the treatment is performed.
  • the instrument 29 is in a maximum bending state with a large load (a state where the treatment instrument raising base 24 is raised and finished), or a force is required to bend the treatment instrument 29, and the treatment instrument 29 having a large diameter or bending rigidity Assuming that the spring is high, the spring 60 is compressed, and the engagement pin 40 is moved toward the rotation axis O. In this way, when the reaction force from the treatment instrument 29 is large, the moment applied to the rotating member 34 by the reaction force is reduced, and the amount of operating force of the rotating member 34 is reduced.
  • the treatment instrument 29 is in a small load state (state where the treatment instrument raising base 24 starts to rise).
  • the treatment instrument 29 has a small diameter or a low bending rigidity
  • the spring 60 is not compressed, and the engaging pin 40 is moved to the spring 60. It is positioned at the position farthest from the rotation axis O by the elastic force, and the stroke of the raising operation lever 13 is sufficiently secured.
  • the proximal end drive mechanism unit 30 of the present embodiment can change the amount of operation force by the raising operation lever 13 connected to the raising wire 26 based on the reaction force from the treatment tool 29. ing.
  • the spring 60 can be appropriately changed so as to obtain a desired elastic force, and the spring 60 having an optimal elastic force may be disposed in consideration of a reaction force from the treatment instrument 29 to be used in advance. .
  • the operation of the proximal end drive mechanism unit 30 of the endoscope according to the present embodiment will be described with reference to FIGS.
  • the surgeon performs a raising operation for rotating the treatment instrument raising base 24 in order to change the protruding direction of the treatment instrument 29 protruding from the channel opening 18 of the distal end portion 5.
  • the engaging pin 40 located at the base end of the connecting lever 32 is movable by the elastic force of the spring 60 with respect to the engaging pin 40 in the rotating cam groove 36 as shown in FIG. In the range, it is arranged at a position farthest from the rotation axis O (a distance L1 substantially equal to the radius R of the rotation member 34).
  • the raising operation by the raising operation lever 13 is performed while the engagement pin 40 is disposed at the position farthest from the rotation axis O by the elastic force of the spring 60. Thereby, the stroke of the raising operation lever 13 can be sufficiently secured.
  • FIG. 21 shows that the treatment instrument 29 has a large diameter or a high bending rigidity, which requires a force to bend the treatment instrument 29, or has a high bending rigidity.
  • the engagement pin 40 is moved toward the rotation axis O, the moment applied to the rotation member 34 by the reaction force is reduced, and the amount of operating force of the rotation member 34 is reduced.
  • the amount of operating force of the raising operation lever 13 is changed based on the reaction force (raising force amount) that acts on the engaging pin 40 from the raising wire 26. It becomes possible to make it.
  • the treatment instrument 29 is in a maximum bending state with a large load (a state where the treatment instrument raising base 24 is raised and finished), or a force required to bend the treatment instrument 29, or the treatment instrument 29 having a large diameter or bending.
  • a large load a state where the treatment instrument raising base 24 is raised and finished
  • the treatment instrument 29 is in a small load state (a state where the treatment instrument raising base 24 starts to rise), or the treatment instrument 29 does not require a force to bend, and the treatment instrument 29 has a small diameter or bending rigidity. If it is low, the raising operation is performed in a state where the engaging pin 40 is moved to the position farthest away from the rotation axis O by the elastic force of the spring 60, so the stroke of the raising operation lever 13 is increased. Enough can be secured. Other operations are the same as those in the first embodiment.
  • the operation force amount of the raising operation lever 13 is changed based on the raising force amount applied to the treatment instrument raising base 24. Therefore, when the treatment tool raising base 24 is raised and finished, or when the treatment tool 29 has a large diameter or high bending rigidity, the treatment tool can be raised without increasing the amount of operation force to pull the raising wire.
  • a rotation operation can be performed by the operation lever 13, and the raising operability can be improved.
  • FIG. 24 shows a second modification of the base end drive mechanism portion of the second embodiment, and is an exploded perspective view for explaining the configuration of the base end drive mechanism portion, and FIG. 25 is assembled from the disassembled state of FIG.
  • FIG. 26 is a plan view of the proximal end drive mechanism portion of FIG. 25 showing a state at the start of raising the treatment instrument raising base
  • FIG. 27 is a treatment instrument.
  • FIG. 28 is a plan view of the proximal end drive mechanism portion of FIG. 25 showing a state in which the reaction force from the treatment tool 29 applied to the raising is small
  • FIG. 28 is a diagram showing a large reaction force from the treatment tool 29 and raising the treatment tool raising base.
  • FIG. 29 is a plan view of the proximal end drive mechanism portion of FIG. 25 showing the state upon completion, and FIG. 29 is a cross-sectional view taken along the line II of FIG.
  • the same components as those of the apparatus of the second embodiment are denoted by the same reference numerals, description thereof is omitted, and only different portions are described.
  • the proximal drive mechanism 30 in the endoscope 1 of the present modification is configured by removing the engagement pin 40 and the rotating cam groove 36, the raising wire 26 is pulled toward the proximal end of the insertion portion 2.
  • the reaction force acting on the engaging pin 40 from the raising wire 26 in the direction corresponding to the rotating cam groove 36 becomes larger than the elastic force by the spring 72.
  • the combined member 71 is configured to move toward the rotation axis O.
  • the proximal drive mechanism 30 of the second embodiment includes a pair of guide pin fixing portions 70, an engagement member 71, a spring 72, and a guide pin 73. .
  • the pair of guide pin fixing portions 70 is formed by replacing the rotation cam groove 36 according to the first embodiment with a rotation member 34 whose direction and length are aligned with each other. On the surface.
  • the guide pin fixing portion 70 protrudes on the surface of the rotating member 34 in a direction orthogonal to the surface, and has a connection hole 70a for attaching the guide pin 73 to the upper portion.
  • the engaging member 71 is an engaging member for connecting to the proximal end side of the connecting lever 32 instead of the engaging pin 40.
  • an engaging portion 71 a that is rotatably engaged with the connection hole 32 b of the connecting lever 32 is provided.
  • An insertion hole 71 b for inserting the guide pin 73 is provided on the side surface of the engagement member 71.
  • the pair of guide pin fixing portions 70 may be configured as separate members and fixed to the rotating member 34 without being configured integrally with the rotating member 34.
  • the engaging portion 71a of the engaging member 71 is engaged with the connection hole 32b of the connecting lever 32, and then the state of the state is reached.
  • the engaging member 71 is disposed inside the guide pin fixing portion 70 outside the rotating member 34.
  • the guide pin 73 inserted into the spring 72 is inserted through the insertion hole 71b of the engaging member 71, and one end side is axially attached to the connection hole 70a of the guide pin fixing portion 70, and the other end side is already attached. It is pivotally attached to the connection hole 70a of one guide pin fixing portion 70 (see FIGS. 25 and 29).
  • the rotating member 34 is rotatably attached to the fixing portion 50 of the fixing plate 35 about the rotation axis O at the center of the shaft member 39, and at the same time, the engaging member 71 is connected to the connecting lever.
  • the guide pin 73 is movable in a state where it is connected to the base end side of 32. That is, the base end portion of the connecting lever 32 can be driven in conjunction with the movement operation of the engaging member 71.
  • Other configurations are the same as those of the above embodiment.
  • proximal end drive mechanism 30 of the endoscope 1 operates in the same manner as in the second embodiment.
  • the proximal drive mechanism 30 is configured so that the reaction force from the raising wire 26 causes the load acting on the engagement member 71 in the direction of the rotation axis O to be smaller than the elastic force of the spring 72, that is, the treatment instrument 29 is
  • the load is small (the treatment tool raising base 24 starts to rise), or no force is required to bend the treatment tool 29, the treatment tool 29 has a small diameter or a low bending rigidity.
  • the spring 72 is not compressed, and, as shown in FIG. 27, the raising operation lever 13 remains in a state where the engaging member 71 is disposed at the position farthest from the rotation axis O by the elastic force of the spring 72.
  • the start-up operation is performed. Thereby, the stroke of the raising operation lever 13 can be sufficiently secured.
  • the surgeon further advances the raising operation of the raising operation lever 13, and the treatment instrument raising base 24 is raised from the start state to the raised and end state as shown in FIG. And
  • the reaction force from the raising wire 26 causes the load acting on the engagement member 71 in the direction of the rotation axis O to be greater than the elastic force by the spring 72
  • the instrument 29 is in a maximum bending state with a large load (the treatment instrument elevator 24 is raised and finished), or a force is required to bend the treatment instrument 29, and the treatment instrument 29 has a large diameter or bending rigidity.
  • the spring 72 is compressed, and the engaging member 71 is moved toward the rotation axis O as shown in FIG. In this way, when the reaction force from the treatment instrument 29 is large, the moment applied to the rotating member 34 by the reaction force is reduced, and the amount of operating force of the rotating member 34 is reduced.
  • the proximal end drive mechanism unit 30 is for maintaining the raising state of the treatment instrument raising base 24 with a desired raising position and raising operation force.
  • a lock mechanism may be provided.
  • the configuration of the lock mechanism is not particularly limited, and the location of the lock mechanism is not limited.
  • the lock mechanism is desirably provided in the piston rod 31 and the guide member 33 to which the connecting lever 32 is connected.
  • the base member drive mechanism 30 may be provided on an optical member configured using a spring for the zoom function to reduce the amount of operating force when driving the optical member.
  • the base end drive mechanism portion 30 is provided in the hardness variable mechanism portion configured by using a spring for the hardness variable function of the insertion portion, the amount of operation force when the hardness variation control of the insertion portion is performed can be reduced. good.
  • the movable portion may be an optical member for an endoscope zoom function or a hardness varying member for an insertion portion.
  • FIG. 30 is an exploded perspective view for explaining a modification of the rotating member.
  • 31 is a partial cross-sectional view for explaining the configuration of the rotating member shown in FIG. 30 and 31 show an example in which a rotating cam groove is provided in the extending portion of the rotating member.
  • the rotating member 81 is fixed to the fixed plate 35 by the shaft member 83 together with the raising operation lever 82 so as to be rotatable around the axis of the shaft member 83.
  • the rotating member 81 has a columnar shape, and a rotating cam groove 36 is formed in an extending portion 81a extending from a part of the rotating member 81 in a plate shape.
  • a circumferential groove 81b (FIG. 31) is formed along the circumferential direction on the outer peripheral portion of the cylindrical portion of the rotating member 81, and the O-ring 81c is fitted to the circumferential groove 81b. ing.
  • the O-ring 81c is a member for ensuring watertightness with the exterior member 84 (FIG. 31).
  • the raising operation lever 82 is fixed to the rotating member 81 with a screw 85 or the like.
  • the shaft member 83 is formed with a circumferential groove 83a along the circumferential direction of the outer peripheral portion of the shaft member 83, and is mounted so that the O-ring 83b is fitted in the circumferential groove 83b.
  • the O-ring 83b is a member for ensuring watertightness with the rotating member 81.
  • the engaging pin 40 (see, for example, FIG. 3) is inserted through the rotating cam groove 36 and the fixed cam groove 41. Therefore, when the raising operation lever 82 is operated, the rotating member 81 rotates around the axis of the shaft member 83, and the engaging pin 40 (see, for example, FIG. 3) rotates as the rotating member 81 rotates. It moves along the cam groove 36 and the fixed cam groove 41. Further, when the connecting lever 32 (for example, see FIG. 3) whose one end is connected to the engaging pin 40 moves, the other end of the connecting lever 32 moves along the guide member 33 (for example, see FIG. 3). Therefore, in accordance with the operation of the raising operation lever 82, the raising wire 26 (see, for example, FIG. 3) connected to the coupling lever 32 advances and retreats in the axial direction of the raising wire 26.
  • the moment of the rotating member of the operating unit connected to the pulling member according to the advancement / retraction operation of the pulling member is determined by the operation position (rotation angle) of the operating unit.

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Abstract

L'invention concerne un endoscope (1) qui a un mécanisme d'entraînement d'extrémité proximale (30). Le mécanisme d'entraînement d'extrémité proximale (30) a : un élément rotatif (34) qui est formé par disposition d'une rainure de came de rotation (36) dans un élément en forme de plaque circulaire d'une manière telle que la rainure de came de rotation (36) s'étend dans la direction radiale de l'élément en forme de plaque circulaire ; un levier de liaison (32) qui maintient un câble élévateur (26) et qui a une broche d'engagement (40) s'engageant avec la rainure de came de rotation (36) de façon à être apte à se déplacer dans la direction radiale ; et une rainure de came d'apposition (41) qui, alors que l'élément rotatif (34) tourne dans la direction dans laquelle le câble élévateur (26) est tiré sur le côté d'extrémité proximale d'une section d'introduction (2), amène la broche d'engagement (40) à se déplacer vers un axe de rotation (O) et qui, alors que l'élément rotatif (34) tourne dans la direction dans laquelle le câble élévateur (26) est poussé du côté d'extrémité proximale de la section d'introduction (2), amène la broche d'engagement (40) à se déplacer dans la direction dans laquelle la broche d'engagement (40) se sépare de l'axe de rotation (O).
PCT/JP2012/075938 2011-12-28 2012-10-05 Endoscope WO2013099390A1 (fr)

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JP2015104424A (ja) * 2013-11-28 2015-06-08 富士フイルム株式会社 ワイヤ押し引き装置及び内視鏡
CN108042091A (zh) * 2017-12-25 2018-05-18 深圳开立生物医疗科技股份有限公司 一种抬钳传动机构及内窥镜
WO2018162559A1 (fr) * 2017-03-08 2018-09-13 Ambu A/S Poignée pour endoscope
CN109715036A (zh) * 2016-10-14 2019-05-03 Hoya株式会社 内窥镜用盖子、内窥镜以及内窥镜用盖子的拆卸方法
CN109788887A (zh) * 2016-10-14 2019-05-21 Hoya株式会社 一种内窥镜及内窥镜用镜头帽
CN110809428A (zh) * 2017-07-18 2020-02-18 富士胶片株式会社 内窥镜
CN110809427A (zh) * 2017-07-18 2020-02-18 富士胶片株式会社 内窥镜
CN111065313A (zh) * 2017-09-28 2020-04-24 富士胶片株式会社 内窥镜
JP2020089598A (ja) * 2018-12-06 2020-06-11 オリンパス株式会社 医療装置
CN112996424A (zh) * 2018-06-28 2021-06-18 梅迪特瑞纳公司 内窥镜及使用方法
WO2021193693A1 (fr) * 2020-03-27 2021-09-30 富士フイルム株式会社 Endoscope
WO2021193694A1 (fr) * 2020-03-27 2021-09-30 富士フイルム株式会社 Endoscope
US11202554B2 (en) 2017-03-08 2021-12-21 Ambu A/S Handle for an endoscope
US11330965B2 (en) 2017-03-03 2022-05-17 Boston Scientific Scimed, Inc. Device tip
US11642014B2 (en) 2017-03-08 2023-05-09 Ambu A/S Handle for an endoscope
US11882998B2 (en) 2017-07-18 2024-01-30 Fujifilm Corporation Endoscope
US11889980B2 (en) 2017-07-18 2024-02-06 Fujifilm Corporation Endoscope

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JPS5815835A (ja) * 1981-07-17 1983-01-29 オリンパス光学工業株式会社 内視鏡の処置具起上装置
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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015104424A (ja) * 2013-11-28 2015-06-08 富士フイルム株式会社 ワイヤ押し引き装置及び内視鏡
CN109715036A (zh) * 2016-10-14 2019-05-03 Hoya株式会社 内窥镜用盖子、内窥镜以及内窥镜用盖子的拆卸方法
CN109788887A (zh) * 2016-10-14 2019-05-21 Hoya株式会社 一种内窥镜及内窥镜用镜头帽
US11751751B2 (en) 2017-03-03 2023-09-12 Boston Scientific Scimed, Inc. Device tip
US11330965B2 (en) 2017-03-03 2022-05-17 Boston Scientific Scimed, Inc. Device tip
US11202554B2 (en) 2017-03-08 2021-12-21 Ambu A/S Handle for an endoscope
WO2018162559A1 (fr) * 2017-03-08 2018-09-13 Ambu A/S Poignée pour endoscope
US11642014B2 (en) 2017-03-08 2023-05-09 Ambu A/S Handle for an endoscope
US11553833B2 (en) 2017-03-08 2023-01-17 Ambu A/S Handle for an endoscope
CN110809428A (zh) * 2017-07-18 2020-02-18 富士胶片株式会社 内窥镜
US11882998B2 (en) 2017-07-18 2024-01-30 Fujifilm Corporation Endoscope
US11918181B2 (en) 2017-07-18 2024-03-05 Fujifilm Corporation Endoscope
US11910996B2 (en) 2017-07-18 2024-02-27 Fujifilm Corporation Endoscope
CN110809427B (zh) * 2017-07-18 2022-03-18 富士胶片株式会社 内窥镜
US11889980B2 (en) 2017-07-18 2024-02-06 Fujifilm Corporation Endoscope
CN110809427A (zh) * 2017-07-18 2020-02-18 富士胶片株式会社 内窥镜
US11564555B2 (en) 2017-09-28 2023-01-31 Fujifilm Corporation Endoscope
CN111065313A (zh) * 2017-09-28 2020-04-24 富士胶片株式会社 内窥镜
CN108042091A (zh) * 2017-12-25 2018-05-18 深圳开立生物医疗科技股份有限公司 一种抬钳传动机构及内窥镜
CN112996424A (zh) * 2018-06-28 2021-06-18 梅迪特瑞纳公司 内窥镜及使用方法
JP2020089598A (ja) * 2018-12-06 2020-06-11 オリンパス株式会社 医療装置
WO2021193693A1 (fr) * 2020-03-27 2021-09-30 富士フイルム株式会社 Endoscope
WO2021193694A1 (fr) * 2020-03-27 2021-09-30 富士フイルム株式会社 Endoscope

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