WO2015174139A1 - 内視鏡 - Google Patents
内視鏡 Download PDFInfo
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- WO2015174139A1 WO2015174139A1 PCT/JP2015/058328 JP2015058328W WO2015174139A1 WO 2015174139 A1 WO2015174139 A1 WO 2015174139A1 JP 2015058328 W JP2015058328 W JP 2015058328W WO 2015174139 A1 WO2015174139 A1 WO 2015174139A1
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- WIPO (PCT)
- Prior art keywords
- bending
- directions
- endoscope
- operation unit
- lever
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0057—Constructional details of force transmission elements, e.g. control wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00039—Operational features of endoscopes provided with input arrangements for the user
- A61B1/00042—Operational features of endoscopes provided with input arrangements for the user for mechanical operation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0052—Constructional details of control elements, 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
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/044—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances for absorption imaging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0138—Tip steering devices having flexible regions as a result of weakened outer material, e.g. slots, slits, cuts, joints or coils
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
-
- 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
- A61B1/012—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 characterised by internal passages or accessories therefor
- A61B1/015—Control of fluid supply or evacuation
Definitions
- the present invention relates to an endoscope in which a bending portion bends in conjunction with a tilting operation to a bending lever.
- endoscopes are widely used in the medical field and the industrial field.
- Some endoscopes are provided with an elongated flexible insertion portion.
- a flexible endoscope has a bending portion that can be bent in a predetermined direction according to a user's hand operation. Provided on the tip side.
- the operation unit in a small-diameter endoscope that has a small bending force and a small curvature radius, such as a bronchial endoscope, the operation unit is generally used.
- the gripping part provided on the left hand is gripped by the middle finger, ring finger, and little finger of the left hand, the bending lever is operated by the thumb, and various switches and buttons such as the suction button are operated by the index finger.
- Patent Document 1 Japanese Patent Laid-Open No. 8-299255 (Patent Document 1) has a bending lever so that the same operation can be easily realized not only with the left hand but also with the right hand.
- the finger-hanging unit On the switch unit set on the front side of the operation unit so as to be opposed to the finger-hanging unit, the finger-hanging unit is arranged on the back side of the operation unit by extending L-shaped backward from the side of the operation unit.
- a technique in which a suction button is arranged on a central axis in a longitudinal direction of an operation unit is disclosed.
- Patent Document 2 Japanese Patent Application Laid-Open No. 2003-325437
- a wire pulling member having four arm portions each having a base end portion of a pulling wire (pulling member) fixed thereto, and a predetermined direction from each pulling wire by changing the tilting direction and the tilting amount of the wire pulling member.
- An bending device including an operation instruction lever (curving lever) that gives an instruction to move a pulling wire by a predetermined amount is disclosed.
- Patent Document 1 Japanese Patent Laid-Open No. 8-299255
- Patent Document 2 the above-mentioned Japanese Patent Laid-Open No. 2003-325437 is described in order to bend the bending portion in an arbitrary direction.
- Patent Document 2 the mechanism disclosed in Japanese Patent Publication (Patent Document 2) is applied as it is, the wire pulling member or the like may interfere with the cylinder portion or the like of the suction button in the operation unit.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide an endoscope capable of realizing equivalent operability with any of the left and right hands without increasing the size of the operation unit. .
- An endoscope has an insertion portion that can be inserted into a subject and has a bending portion that can be bent in all directions including four directions in the vertical and horizontal directions around the longitudinal axis, Four wires that are inserted into the insertion portion and bend the bending portion by pulling, a symmetrical operation portion that is connected to the proximal end of the insertion portion, and a center protruding in the left-right width direction of the operation portion.
- An operation button that is disposed, a button connecting member that is provided in the operation unit and that is connected to the operation button, and is disposed to face the operation button in the front-rear direction in the center in the left-right width direction of the operation unit,
- An operation lever that can be tilted in all directions including four directions that correspond to the up, down, left, and right directions of the bending portion, and a tiltable position provided at a position facing the button connecting member in the operation portion, When the lever is connected
- a wire pulling member connected to the distal end side of each of the four arm portions extending in a cross direction from the center portion, and the operation lever is configured to connect the bending portion to the bending portion.
- Tilt directions for bending up, down, left, and right are set in association with any one of four directions, a left-right width direction of the operation portion and a direction orthogonal to the left-right width direction, and the wire pulling member is
- the extending direction of the four arm portions is arranged at a position rotated about a central axis of the operation lever by a set angle with respect to the four tilt directions set for the lever.
- FIG. 1 Front view showing the appearance of the endoscope Right side view showing the appearance of the endoscope Top view showing the appearance of the endoscope
- the perspective view which shows the internal structure of a bending operation mechanism Exploded perspective view showing internal structure of bending operation mechanism
- FIG. 1 is a front view showing the appearance of the endoscope
- FIG. 2 is a right side view showing the appearance of the endoscope
- FIG. 3 is a top view showing the appearance of the endoscope.
- FIG. 5 is an explanatory view showing an arrangement relationship between the wire pulling member and the cylinder
- FIG. 5 is a perspective view showing an arrangement relationship between the bending operation mechanism and the cylinder
- FIG. 6 is a perspective view showing an internal structure of the bending operation mechanism.
- FIG. 7 is an exploded perspective view showing the internal structure of the bending operation mechanism
- FIG. 8 is a cross-sectional view showing the tip and the main part of the bending portion, and FIG. 9 shows the tip along the line IX-IX in FIG.
- FIG. 10 is a sectional view showing the curved portion along the line XX in FIG. 8
- FIG. 11 is a sectional view showing the curved portion along the line XI-XI in FIG.
- An endoscope 1 according to this embodiment shown in FIGS. 1 and 2 is an electronic endoscope for bronchi, and the endoscope 1 includes an insertion portion 2 formed in an elongated tubular shape and a proximal end of the insertion portion 2.
- An operation unit 3 connected to the operation unit 3, a universal cord 4 that is an endoscope cable extending from the operation unit 3, and an endoscope connector 5 disposed at the tip of the universal cord 4. Configured.
- the insertion portion 2 is constituted by a flexible tubular member in which a distal end portion 6, a bending portion 7, and a flexible tube portion 8 are connected in order from the distal end side.
- a metal tip hard portion 10 is provided in the tip portion 6, and the tip hard portion 10 includes an image pickup unit 11 including an image pickup device such as a CCD or CMOS, A pair of light guides 12 and a treatment instrument insertion channel 13 are held.
- an image pickup unit 11 including an image pickup device such as a CCD or CMOS
- a pair of light guides 12 and a treatment instrument insertion channel 13 are held.
- a cutting edge bending piece 20 having a substantially cylindrical shape is fitted on the proximal end side of the distal end hard portion 10, and an outer periphery of the cutting edge bending piece 20 is covered with a bending rubber 22.
- Wire fixing portions 21 are provided at four locations around the insertion axis O on the inner periphery of the cutting edge bending piece 20. Each wire fixing portion 21 has four pulling wires 23 inserted through the insertion portion 2. Either tip is fixed.
- the imaging unit 11 and the treatment instrument insertion channel 13, which are large members, are provided in the distal end hard portion 10 and the most advanced bending piece 20. Are arranged side by side (see FIGS. 8 and 9), and the light guides 12 are arranged in spaces formed vertically by these arrangements.
- the vertical and horizontal directions of the distal end portion 6 (insertion portion 2) are directions defined in association with vertical and horizontal directions of an image captured by the imaging unit 11, for example.
- each wire fixing portion 21 rotates by a predetermined angle around the insertion axis O with respect to the vertical and horizontal positions of the distal end portion 6. It is provided at the moved position. That is, for example, as shown in FIG. 9, the most advanced bending piece 20 is rotationally moved within the range of 30 to 60 degrees on the left and right sides around the insertion axis O with respect to the upward direction of the distal end portion 6 ( Specifically, for example, each position rotated by 39 degrees) and a position rotated about 30 to 60 degrees on the left and right around the insertion axis O with respect to the downward direction of the tip 6 (see FIG.
- each wire fixing portion 21 is provided at a position rotated by 39 degrees.
- each pulling wire 23 is routed at a position rotated by a predetermined angle around the insertion axis O with respect to the vertical and horizontal directions.
- the bending portion 7 can be actively bent in the entire circumferential direction around the insertion axis O including the up / down / left / right directions (UP-DOWN / RIGHT-LEFT) in response to an operation input from the operator or the like to the operation portion 3. It is configured. That is, the bending portion 7 of the present embodiment has, for example, a pivotal support portion 25a (see FIG. 9) arranged in the vertical direction of the insertion portion 2 on the distal end side, and is arranged in the left-right direction of the insertion portion 2. It has a bending piece set 24 in which a plurality of bending pieces 25 having a pivotal support portion 25b on the base end side are connected.
- the signal cable 11a, the light guide 12, and the treatment instrument insertion channel 13 extending from the imaging unit 11 are inserted in the same arrangement as that in the distal end portion 6.
- the outer periphery of the bending piece set 24 is covered with a bending rubber 22 extending from the front end portion 6 side.
- wire guides 26 for inserting the respective pulling wires 23 are formed in the predetermined bending pieces 25 constituting the bending piece set 24. These wire guides 26 are provided at positions that are rotated by a predetermined angle around the insertion axis O with respect to the vertical and horizontal positions of the bending portion 7 in the same manner as the wire fixing portion 21 described above. That is, for example, as shown in FIGS. 10 and 11, the predetermined bending piece 25 is rotationally moved within the range of 30 to 60 degrees on the left and right sides around the insertion axis O with reference to the upward direction of the bending portion 7.
- each wire guide 26 is provided at a position rotated within the range (specifically, for example, a position rotated 42 degrees on the left side and 45 degrees on the right side).
- each pulling wire 23 is routed at a position rotated around the insertion axis O with respect to the vertical and horizontal directions.
- the flexible tube portion 8 is formed of a flexible tubular member that can bend passively. Inside the flexible tube portion 8, the signal cable 11a, the light guide 12, and the treatment instrument insertion channel 13 are inserted (all are not shown here).
- the operation unit 3 includes a folding stop 30 connected to the flexible tube 8 in a state where the proximal end of the flexible tube 8 is covered, and a hand of a user or the like connected to the folding stop 30.
- the grip portion 31 is configured to include a grip portion 31 that can be gripped, and an operation portion main body 32 that is connected to the base end side of the grip portion 31.
- the direction around the insertion axis O in the operation unit 3 is defined with reference to a state in which the user or the like grips the grip unit 31.
- the front-rear and left-right directions front surface, back surface, left and right side surfaces, etc. are defined with reference to the user or the like holding the part 31.
- the grip portion 31 is formed in a symmetrical shape with respect to the insertion axis O (center axis), and can be gripped by the user or the like in the same manner with either the left hand or the right hand. It has become.
- a treatment instrument insertion portion 35 is provided on the front surface on the distal end side of the grip portion 31.
- the treatment instrument insertion portion 35 includes a treatment instrument insertion port 35a for inserting various treatment instruments (not shown). Inside the operation section 3, the treatment instrument insertion channel 35 is communicated with the treatment instrument insertion port 35a via a branch member (not shown).
- a forceps plug (not shown), which is a lid member for closing the treatment tool insertion port 35a, is detachable from the treatment tool insertion portion 35.
- the operation unit main body 32 is configured by a hollow member having a substantially partial spherical shape that mainly bulges to the left and right sides and the front side on the proximal end side of the grip unit 31.
- an operation button group 40 for executing various functions of the endoscope 1 is disposed on the front side of the operation unit main body 32.
- a bending lever 45 as an operation lever for performing a bending operation on the bending portion 7 is disposed on the back side of the operation portion main body 32.
- the universal cord 4 extends from one side (for example, the left side) of the operation unit main body 32.
- the left and right shape of the operation portion main body 32 is a shape that is swelled symmetrically with respect to the insertion axis O, and the grip portion 31 is held on the left and right side surfaces on the distal end side of the operation portion main body 32.
- Guide recesses 32a for guiding the user's index finger or the like to the operation button group 40 are formed.
- the universal cord 4 reaches the operation unit 3 from the distal end 6 side through the inside of the insertion unit 2, and further passes various signal lines and the like extending from the operation unit 3 to the inside, and a light guide of a light source device (not shown).
- 12 is a composite cable through which a tube for air / water supply extending from an air / water supply device (not shown) is inserted.
- the endoscope connector 5 has an electric connector portion 5a to which a signal cable for connection with a video processor (not shown) of an external device is connected on a side surface portion, and is connected to a light source device that is an external device.
- the operation button group 40 includes, for example, a suction button 41 a as an operation button protruding from a suction valve 41 detachably attached to the operation unit main body 32 and various functions related to the endoscope 1. And two button switches 42 to which an arbitrary function can be assigned.
- the suction button 41a and the button switch 42 are arranged so as to be symmetrical on the front side of the operation unit main body 32.
- the suction button 41 a is disposed at the center in the left-right width direction of the operation unit main body 32 so as to overlap the insertion axis O.
- the two button switches 42 are arranged at positions that are symmetrical with respect to the insertion axis O on the tip side of the suction button 41a.
- a cylinder 43 as a button connecting member connected to the suction valve 41 is provided inside the operation portion main body 32.
- the cylinder 43 is detachably mountable with the suction valve 41, and is disposed at the center in the left-right width direction of the operation unit main body 32 so as to overlap the insertion shaft O corresponding to the arrangement of the suction button 41a. Yes.
- the bending lever 45 is constituted by, for example, a joystick-type lever that can tilt in all directions including up, down, left, and right directions.
- the bending lever 45 is disposed at a position that is symmetrical on the back side of the operation unit main body 32. That is, in the present embodiment, the bending lever 45 is disposed at the center in the left-right width direction of the operation unit main body 32 so as to overlap the insertion axis O.
- the tilting direction of the bending lever 45 is defined as the left-right direction of the tilting operation in the left-right width direction of the operation unit 3, which is a direction orthogonal to the insertion axis O.
- the vertical direction is defined in a direction orthogonal to the horizontal width direction.
- the tilting direction of the bending lever 45 of the present embodiment is, for example, the tilting direction (left tilting direction) for curving the bending portion 7 leftward on the left side in FIG.
- the right side is a tilt direction (right tilt direction) for curving the curved portion 7 to the right side
- the lower side in FIG. 3 is the tilt direction (upward tilt direction) for curving the curved portion 7 upward
- the upper side is defined as a tilt direction (down tilt direction) for bending the bending portion 7 downward.
- a finger rest 46 capable of abutting the thumb of a user or the like is provided at the protruding end of the bending lever 45.
- a bending operation mechanism 50 is connected to the proximal end side of the bending lever 45 inside the operation unit 3, and the bending lever 45 is connected to the bending portion 45 through a pulling operation of each pulling wire 23 by the bending operation mechanism 50. 7 can be bent in an arbitrary direction.
- the bending operation mechanism 50 includes a housing 51 having a substantially cylindrical shape, a rotation frame 52 pivotally supported in the housing 51 so as to freely rotate (swing), and this rotation.
- the frame 52 includes a base member 53 that is pivotally supported (swinged) and a wire pulling member 54 that is fixed to the base member 53.
- the housing 51 is constituted by a substantially cylindrical member, and axial holes 51 a facing each other are formed in the peripheral wall of the housing 51.
- the rotation frame 52 is constituted by a frame body having a substantially rectangular shape, for example.
- the rotating frame 52 has a pair of screw holes 52a facing each other in the center of both ends in the longitudinal direction, and a pair of shaft holes 52b facing each other in the center of both ends in the short direction. ing. Then, the screw 55 inserted into each shaft hole 51 a of the housing 51 is screwed into each screw hole 52 a, so that the rotation frame 52 is pivotally supported with respect to the housing 51.
- the base member 53 is configured by a substantially cylindrical member.
- a fitting hole 53a is formed in the central portion of the base member 53, and the proximal end side of the bending lever 45 is connected to the fitting hole 53a by fitting.
- a pair of flat portions 53b facing each other are formed in the peripheral portion of the base member 53, and screw holes 53c (only one screw hole 53c is shown in FIG. 7) facing each other are formed in these flat portions 53b. It is installed.
- the base member 53 is pivotally supported with respect to the rotation frame 52 by screwing the screws 56 inserted into the shaft holes 52b of the rotation frame 52 into the screw holes 53c. .
- the base member 53 is thus supported by the housing 51 via the rotation frame 52, so that the bending lever 45 connected to the base member 53 can tilt with respect to an arbitrary direction. Yes.
- the wire pulling member 54 is configured by a plate-like member in which the arm portion 54b extends in four different directions. More specifically, in the present embodiment, the wire pulling member 54 is configured by a cross-shaped plate member in which the angle formed by the adjacent arm portions 54b is set to 90 degrees, and the central portion 54a is a base member. It is fixed to 53 via a screw 57. That is, the bending lever 45 is connected to the wire pulling member 54 via the base member 53. Further, wire fixing holes 54c are formed at the distal end side of each arm portion 54b, and the proximal end side of each pulling wire 23 extending from the insertion portion 2 side is fixed to these wire fixing holes 54c.
- each arm portion 54b is not limited to 90 degrees, and can be arbitrarily changed within a range of ⁇ 30 degrees with reference to the 90 degrees.
- each arm portion 54b is within a range of 30 to 60 degrees around the central axis Ol of the bending lever 45 with respect to the vertical and horizontal tilt directions defined by the bending lever 45. It is arranged at a position where it has been rotated (for example, a position that has been rotated 45 degrees). Thereby, for example, as shown in FIG. 4, the bending operation mechanism 50 is arranged in a state in which the cylinder 43 faces the two arm portions 54 b of the wire pulling member 54.
- the housing 51 of the bending operation mechanism 50 is provided with two stays 58 extending on both sides of the cylinder 43, and the guide coil 23 a is fixed to these stays 58.
- Each pulling wire 23 is inserted into the guide coil 23 a so as to be routed without interfering with the cylinder 43.
- the two arm portions 54b positioned mainly in the left tilt direction are used.
- the pulling wire 23 connected to is pulled.
- the two pulling wires 23 located in the bending direction right side are mainly pulled, and the bending part 7 is bent to the right side.
- the two arm portions 54b positioned mainly in the downward tilt direction.
- the pulling wire 23 connected to is pulled.
- the two pulling wires 23 located mainly on the upper side in the bending direction are pulled, and the bending part 7 is bent upward.
- the two arm portions 54b positioned mainly in the upward tilt direction.
- the pulling wire 23 connected to is pulled.
- the two pulling wires 23 located mainly on the lower side in the bending direction are pulled, and the bending part 7 is bent downward.
- the index finger or the like of the gripped hand is guided to the operation button group 40 along the guide recess 32 a, and the suction button 41 a or the like is pressed to operate the endoscope.
- Various functions such as a suction operation by 1 are executed.
- the operation unit 3 (gripping unit 31) has a symmetrical shape, and the suction button 41a and the bending lever 45 are arranged opposite to each other at the center in the left-right width direction of the operation unit 3 (operation unit body 32).
- the operation unit 3 can be gripped in the same manner with both the left and right hands, and the suction button 41a and the bending lever 45 can be manually operated with the same operability.
- each arm portion 54b is arranged in a state in which it is rotated by a predetermined angle around the central axis Ol of the bending lever 45 with respect to the up / down / left / right tilt directions defined in the bending lever 45,
- the arm portion 54b and the like can be prevented from interfering with the cylinder 43.
- even when the bending lever 45 is tilted in the vertical tilting direction it is possible to prevent the arm portion 54b, the pulling wire 23, and the like interlocking with this from interfering with the cylinder 43.
- the suction button 41a and the bending lever 45 are arranged to face each other in the center in the left-right width direction of the operation unit 3 without greatly separating the wire pulling member 54 (bending operation mechanism 50) from the cylinder 43. Therefore, the same operability can be realized with either the left or right hand without increasing the size of the operation unit 3.
- the pulling wire 23 routed in the bending portion 7 is routed at a position rotated around the insertion axis O by a set angle with respect to the bending direction of the bending portion 7 in the vertical and horizontal directions.
- the tilt directions of the up, down, left, and right defined for the bending lever 45 can be easily matched.
- the layout in the bending portion that can be bent only in the vertical direction is used as it is, and the bending operation in the vertical and horizontal directions can be realized without increasing the outer diameter.
- the present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the technical scope of the present invention.
- an example in which the present invention is applied to an endoscope for bronchi has been described.
- the present invention is not limited to this, and for example, for an endoscope for urology, etc. It is possible to apply.
- the tilting direction defined for the bending lever is not limited to the above-mentioned one, and the operation button is of course not limited to the suction button or the like.
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Abstract
Description
Claims (4)
- 被検体に挿入可能であって、長手軸を中心に上下左右方向の4方向を含む全方向に湾曲可能な湾曲部を有する挿入部と、
先端側が前記挿入部内に挿通され牽引によって前記湾曲部を湾曲させる4本のワイヤと、
前記挿入部の基端に連設された左右対称形状をなす操作部と、
前記操作部の左右幅方向の中央に突出配置された操作ボタンと、
前記操作部内に設けられ、前記操作ボタンに連設されるボタン連設部材と、
前記操作部の左右幅方向の中央において前記操作ボタンと前後に対向して配置され、前記湾曲部の上下左右方向に対応付けた4方向を含む全方向に傾動可能な操作レバーと、
前記操作部内の前記ボタン連設部材と対向する位置に傾動可能に設けられ、中心部に前記操作レバーが連結されるとともに、前記中心部から十字方向に延出された4本のアーム部の各先端側に前記ワイヤの基端側がそれぞれ連結されたワイヤ牽引部材と、を備え、
前記操作レバーは、前記湾曲部を前記上下左右に湾曲させるための傾動方向が、前記操作部の左右幅方向と当該左右幅方向に直交する方向との4方向の何れかにそれぞれ対応付けて設定され、
前記ワイヤ牽引部材は、前記操作レバーに設定された前記4方向の傾動方向に対し、前記4本のアーム部の延出方向が前記操作レバーの中心軸周りに設定角度回転移動した位置に配置されていることを特徴とする内視鏡。 - 前記4本のアーム部を前記操作レバーの中心軸周りに回転移動させる角度は、前記操作レバーの傾動方向に対し、30度から60度の範囲内であることを特徴とする請求項1に記載の内視鏡。
- 前記4本のワイヤは、前記湾曲部の上下左右方向に対し、前記挿入部の挿入軸周りに設定角度回転移動した位置に配索されていることを特徴とする請求項1に記載の内視鏡。
- 前記4本のワイヤを前記挿入部の挿入軸周りに回転移動させる角度は、前記湾曲部の上下左右方向に対し、30度から60度の範囲内であることを特徴とする請求項3に記載の内視鏡。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015559359A JP5930255B2 (ja) | 2014-05-16 | 2015-03-19 | 内視鏡 |
CN201580003721.0A CN105873494B (zh) | 2014-05-16 | 2015-03-19 | 内窥镜 |
EP15792138.8A EP3078318B1 (en) | 2014-05-16 | 2015-03-19 | Endoscope |
US15/201,703 US10231605B2 (en) | 2014-05-16 | 2016-07-05 | Endoscope |
US16/260,380 US20190150709A1 (en) | 2014-05-16 | 2019-01-29 | Endoscope |
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US15/201,703 Continuation US10231605B2 (en) | 2014-05-16 | 2016-07-05 | Endoscope |
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JP (1) | JP5930255B2 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
CN105873494A (zh) | 2016-08-17 |
US20160309985A1 (en) | 2016-10-27 |
US20190150709A1 (en) | 2019-05-23 |
JP5930255B2 (ja) | 2016-06-08 |
US10231605B2 (en) | 2019-03-19 |
EP3078318A4 (en) | 2017-09-13 |
CN105873494B (zh) | 2018-04-27 |
EP3078318A1 (en) | 2016-10-12 |
JPWO2015174139A1 (ja) | 2017-04-20 |
EP3078318B1 (en) | 2019-05-08 |
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