JPH04111302U - Endoscope operating device - Google Patents

Abstract

(57) [Summary] [Purpose] The present invention minimizes the height of each operating knob in the rotational axis direction so that it can be easily operated even with the hand holding the operating part and prevents malfunction. The purpose of the present invention is to provide an endoscope operating device. [Structure] At least an operating lever 5 serves as a plurality of operating members coaxially stacked in the operating section 2 of the endoscope 1.
2 and an operating lever 92 are arranged so that the rotational orbits of the button body 53 and the finger rest part 96a thereof are substantially on the same plane, and further, the button body 53 and the finger rest part 96a do not interfere with each other. placed in position. This allows the operation lever 52, the operation lever 92, the button body 53 and the finger rest 96a to
The overall height of the controller is reduced, improving the operability of the entire operating section and preventing malfunctions.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention performs operations such as bending the curved tube of the insertion section in the operation section. The present invention relates to an endoscope operating device.

0002

[Conventional technology]

Generally, the operation section of an endoscope has a bending operation for bending the curved tube part of the insertion section. equipment is provided. This bending operation device is disclosed in, for example, Japanese Patent Application Laid-Open No. 60-246728. As shown in the publication, various operation knobs are provided on the same axis, and each The operating knobs are arranged in a stacked manner. In other words, how to guide the processing tool The knob that controls the direction and the knob that locks the bending operation knob are stacked toward the center of the axis. are stacked on top of each other, and furthermore, the bending operation knobs are stacked on the outside thereof.

0003 Each knob must be operated with the same hand that is gripping the endoscope's control section. be. This is a moving operation that moves the treatment instrument inserted into the insertion channel of the endoscope forward and backward. while performing other operations such as feeding the insertion tube into the body cavity. This is because it is necessary to keep it open so that it can be used when cooking.

0004

[Problem to be solved by the invention]

However, in the conventional operating device described above, when the operating section is held by hand, the bending operation is difficult. The operating knob was located far from the palm of the hand, making it difficult for the fingers to reach and operating it. This invention was developed with a focus on the above problems, and its purpose is to The height of the operating knob in the direction of the rotation axis has been minimized to make it easier for the hand to grip the operating unit. To provide an endoscope operating device that is operable and prevents malfunctions. There is a particular thing.

[0005]

[Means and actions for solving the problem]

In order to solve the above problems, the present invention has been developed to It has a plurality of stacked operating knobs, and a finger rest for the at least two operating knobs. Position the fingers of the outer operating knob against the operating unit so that the rotational orbits of the parts are approximately on the same plane. The finger rest part is arranged on the operation knob side of the operation part side, and the finger rest part of each operation knob is This is an endoscope operating device located in a position where it will not interfere with the operation of the endoscope.

[0006] According to this, the plane of the rotation trajectory of the finger rest of each operating knob is shifted. The overall height of these operation knobs can be lowered compared to type-type ones, making them easier to operate. Moreover, malfunctions can be prevented.

[0007]

【Example】

1 to 6 show an embodiment of the present invention. 1 in Figure 2 is an endoscope. . This endoscope 1 consists of an operating section 2, an insertion section 3, and a light guide cable 4. ing. The insertion section 3 connects the tip component 7 to the tip of the flexible tube 5 via the curved tube 6. It will be done. The operating section 2 is provided with a bending operation device 8, which will be described later. The operating section 8a is exposed to the outside of the operating section 2. Then, the bending operation of this bending operation device 8 is performed. The bending tube 6 can be bent remotely by the operator operating the part 8a from the outside. In addition, the direction of the tip forming portion 7 can be changed in the vertical and horizontal directions.

[0008] The bending operation device 8 is configured as shown in FIGS. 1, 2, 4, and 5. There is. That is, the casing body 10 of the operating section 2 is made of electrically insulating material, such as plastic. It is made of stick, and inside it is a board 11 fixed to the casing body 10. is installed. This substrate 11 has a flange 13 with a fixed shaft 12 formed at one end thereof. has been fixed through. The other end of this fixed shaft 12 is attached to the casing body 10. It protrudes to the outside from the drilled through hole 14. Further, the fixed shaft 12 has a first slot. The tube 15 and the second sleeve 16 are rotatably fitted one after another. 1st pickpocket A first sprocket 17 is integrally provided at one end of the groove 15, and a second sprocket 17 is integrally provided at one end of the sprocket 15. A second sprocket 18 is attached to one end of the sprocket 16 so as to move integrally in the direction of rotation. They are smiling. Wires are connected to both ends of each of these sprockets 17 and 18. chain (both not shown) is engaged. The above four wires are curved as above. They are connected to pieces (not shown) forming the tube 6 at 90° intervals in the circumferential direction. did Therefore, when the first sprocket 17 rotates, the bending tube 6 is bent left and right, When the second sprocket 18 rotates, it is curved up and down. Also , a bearing cylinder 20 is hermetically fitted into the through hole 14 of the main body 10 via an O-ring 21. The second sleeve 16 is rotatably supported on this bearing cylinder body 20. has been done.

[0009] A rotary cylinder 90 serving as an operating shaft is fitted on the outside of the fixed cylinder 20. This fixed cylindrical body 20 is attached to the substrate 11 via a cover 22, and is rotated. The rolling body 90 is fitted on the outside thereof, and an O-ring is inserted into the through hole 14 of the casing body 10. It is rotatably supported by a tightening ring 95 fixed via a ring 94. Sara An O-ring 9 is provided between the groove provided in the outer peripheral wall of the fixed cylinder 20 and the tightening ring 95. 1. Furthermore, a treatment tool guide operating lever is provided at the outer end of the rotary cylinder body 90. -92 is fixed by a mounting screw 93, which is attached to the outside of the casing body 10. It extends along the surface. Also, a link (not shown) is provided at the inner end of the rotating cylinder 90. is fixed and connected to a control wire (not shown) by known means. This operating wire is connected to a treatment instrument guide (not shown) in the distal end component 7. Ru. Further, the outer peripheral surface of the end of the treatment instrument inductor operating lever 92 is provided with a finger rest portion 96a. A knob 96 for operation is fixed by a mounting screw 97.

On the other hand, the operating lever 52 is bent at an intermediate portion 98, and a lead body 53 constituting a finger rest is attached to the tip thereof, thereby forming an operating knob. Furthermore, considering that the lead body 53 and the knob 96 are in a plane perpendicular to the rotation center axis of the first sleeve 15, the respective rotational orbits are approximately located in the same plane, but as shown in FIG. The operating ranges θ ₁ and θ ₂ are arranged in a positional relationship that does not interfere with each other.

[0011] On the other hand, the first sleeve 15 is formed longer than the second sleeve 16, Flanges 23 and 24 are provided at the other ends of these, respectively. second sleeve 16 The flange 24 has a first receiver 26 which has a cap shape and has a storage chamber 25 inside. An O-ring 26a is placed between the opening surface of the main body 10 and the first sleeve 15. has been fixed through. Inside the storage chamber 25 of this first receiving body 26, there is a friction member on the upper surface. The first mounting plate 28 to which the plate 27 is attached is bent toward the first mounting plate 28 on the upper surface. It has a leaf spring 29 and is rotatably supported on the bearing cylinder body 20 via an O-ring 30. and the second mounting plate 31 are housed in order. The upper surface of this second mounting plate 31 An upper annular wall 32 is erected at the periphery, and this annular wall 32 and the first receiver 26 An O-ring 33 is interposed between the inner peripheral surface and the inner circumferential surface. Note that one part of the upper annular wall 32 A notch 32a is provided in the first mounting plate 28. The protrusions 28a are engaged with each other. The outer circumferential surface of the first receiving body 26 has an axial direction. A first external thread 34 and a first outer periphery formed at 36 equal pitch intervals along the direction. A spline 35 and a second external thread 36a are formed in this order. 2nd male screw An annular adjustment body 36 is rotatably screwed onto 36a. Outside this adjustment body 36 A second outer circumferential spline 3 having the same pitch interval as the first outer circumferential spline 35 is provided on the circumferential surface. 7 is formed, and a collar 38 that protrudes both radially inward and outward is provided on the lower end surface. It is being The portion of this collar 38 that protrudes inward in the radial direction is attached to the second mounting body 31. Lower annular wall 3 having a protrusion 39a that engages with a notch 31a provided on the periphery of the lower surface. 9 is received via a sliding plate 99 made of a material with a low coefficient of friction. therefore , when the adjusting body 36 is screwed in, the second Does the mounting body 31 rise and the force with which the leaf spring 29 biases the first mounting plate 28 increases? The friction plate 27 provided on the first mounting plate 28 and the end of the first receiver 26 Pressure force with the inner surface of the part wall increases. In other words, by rotating the adjustment body 36, The friction force by the friction plate 27 can be adjusted as desired. Also, above The first operating knob 40 is fitted into the first receiving body 26 and the adjusting body 36. child The first operating knob 40 is made of electrically insulating material, such as plastic, and includes An inner circumferential spline corresponding to the first and second outer circumferential splines 35 and 37 is provided on the circumferential surface. 41 is formed, and the first operation is performed by fitting these splines 35, 37, 41. When the knob 40 is rotated, the first receiver 26 and the adjustment body 36 rotate together. At the same time, relative rotation between the first receiving body 26 and the adjusting body 36 is prevented. In other words, the adjustment state of the frictional force by the adjustment body 36 is fixed. Ru. Note that a presser ring 42 is screwed onto the first male thread 34 of the first receiver 26. This prevents the first operating knob 40 from being pulled out.

0012 Further, on the lower side of the second mounting plate 31, there is provided a part that is non-rotatably supported on the bearing cylinder body 20. The third mounting plate 43 is attached to the bearing cylinder body 20 on the lower side of the third mounting plate 43. A fourth mounting plate 44 is rotatably supported. Third mounting plate 43 As shown in FIG. 4, a pair of protrusions 45 are provided on the outer peripheral surface of the A locking spring 46 and a biasing spring 47 are fixed at one end. Also, the fourth An engagement recess 48 is provided on the upper surface of the mounting plate 44 and radially outward of the third mounting plate 43. The regulating member 49 is fixed by the screw 44a that loosely passes through the fourth mounting plate 44 from below. It is attached with a screw, and the protrusion 45 engages with the engagement recess 48. did Therefore, the fourth mounting plate 44 has the projection 45 in contact with the engaging recess 48 from one end to the other end. It is now possible to rotate between the two. Also, the fourth mounting plate 44 On the top surface, there are pins at positions corresponding to the other ends of the locking spring 46 and the biasing spring 47, respectively. A tunnel 50 is erected. The pin 50 extends from below to above with respect to the fourth mounting plate 44. It passes through and is screwed to the mounting plate 44. These pins 50 are attached to the fourth mounting plate. 44 in the direction of the arrow from the state shown in FIG. is elastically deformed in the axial direction. Further, the fourth mounting plate 44 is in the state shown in FIG. At this time, the other end of the locking spring 46 is connected to a recess formed in the inner peripheral surface of the lower annular wall 39. 51. This engagement connects the second mounting plate 31 to the third mounting plate 43. This prevents the second mounting plate 31 from rotating. Therefore, in this state, the first When rotating the operating knob 40, the friction between the friction plate 27 and the first receiver 26 Force becomes rotational resistance. A metal operating lever 52 is attached from the fourth mounting plate 44. The fourth mounting plate 44 can be rotated by this operating lever 52. It is now possible to

[0013] On the other hand, as shown in FIGS. 1 and 2, the top wall of the tip of the operating lever 52 is A button body 53 made of an electrically insulating material such as plastic is attached with a screw. It is. Furthermore, a heat-shrinkable material made of electrically insulating material is provided in the middle of the operating lever 52. Tube 54 is coated. Therefore, the operator can operate the operating lever 52 from the outside. There is no direct contact with it.

[0014] On the other hand, the collar 23 of the first sleeve 15 has a second cap-like shape. The receiving body 55 has its opening facing upward and is connected to the first sleeve by an O-ring 56. It is fixed in a state that maintains airtightness between it and the tube 15. Inside of this second receiver 55 The accommodation chamber 57 has an annular leaf spring 58 bent upward and a friction plate 59 on the top surface. A fifth mounting plate 60 to which a It is prevented from being pulled out by a presser plate 61 attached to the second receiver 55. Further, on the upper surface side of the friction plate 59, there is provided a non-rotatable but vertically movable support on the fixed shaft 12. A pressure contact plate 62 is provided. This pressure contact plate 62 is rotated around the fixed shaft 12. The friction plate is pressed by the lower end of the boss portion 64 of the pushing body 63 which is rotatably screwed onto the It is designed to come into pressure contact with 59. That is, depending on the screwing amount of the pushing body 63, The friction force between the pressure contact plate 62 and the friction plate 59 can be adjusted. In addition, Between the pressure contact plate 62 and the pusher body 63, there are O-rings 65 on the inner and outer peripheral surfaces, respectively. A sealing member 66 is provided, and an O-ring 65 provided on the inner peripheral surface is connected to the above-mentioned bolt. The O-ring 65 on the outer circumferential surface is in pressure contact with the outer circumferential surface of the second receiving body 55. It is pressed against the surface. Furthermore, a plurality of attachment ring bodies 67 are provided on the outer peripheral surface of the pusher body 63. It is fixed by a set screw 68, and the upper surface of the pusher body 63 is attached to this mounting ring body 67. A covering bag-shaped operating body 69 is integrally attached via an O-ring 67a. did Therefore, if the pushing body 63 is rotated by this operating body 69, the pressing plate 6 2 can be displaced. This operating body 69 is made of electrically insulating material, such as plastic. It is integrally molded from stick.

[0015] Furthermore, as shown in FIGS. 1 and 2, an electrically insulating material is provided on the outer periphery of the mounting ring body 67. A cover ring 67b made of rubber, for example, is adhered and fixed. The ring 67b covers the outer peripheral surface of the metal mounting ring 67. In other words, gold The metal mounting ring 67 is covered with an electrically insulating cover ring 67b. , the operator does not have to touch it, which prevents electric shock.

[0016] Further, this cover ring 67b and a second operation knob 82, which will be described later, are similar to each other as shown in FIGS. As shown in Figure 2, they overlap one above the other, and objects such as fingers, etc. This makes it more difficult to insert the electric shock to the operator, thereby improving safety. It is above.

[0017] Further, on the upper surface of the pushing body 63, a first A toothed plate 70 and a second toothed plate 71 rotatably held on the fixed shaft 12 are provided. and is fixed with a nut 72 screwed onto the end of the fixed shaft 12. first On the surface where the tooth plate 70 and the second tooth plate 71 are joined, a large number of teeth 73 that engage with each other are circumferentially provided. They are formed at a predetermined pitch in the direction. As shown in FIG. Three tongue pieces 74a, 74b, and 74c are provided to protrude outward in the radial direction. In other words, The second tooth plate 71 has first to third restrictions separated in the circumferential direction by these tongue pieces. Grooves 75a, 75b, and 75c are formed. Each regulation groove 75a, 75b, 75c Angles A, B, and C are equal angles. In addition, each regulation groove 75a, 75b, 75 The relationship between the angles D and E indicating the relative position of the tooth 73 is such that D is an integral multiple of the pitch of the teeth 73 + 1/ 3 pitches, and E is an integral multiple of the pitch of the teeth 73 + ⅔ pitch. the above One of the regulating grooves, for example, the first regulating groove 75a having an angle A, is formed on the upper surface of the pushing body 63. A rotation regulating pin 76 protruding from is located. Therefore, the pusher 63 is It can be rotated within the range of angle A of the first regulating groove 75a.

[0018] Next, by changing the relative position of the second tooth plate 71 with respect to the first tooth plate 70, the tooth Since the rotation position of the rotation regulating pin 76 can be changed every 73 pitches, the upper The screwing amount of the marking body 63 can be changed. That is, for each pitch of the teeth 73 The friction force between the pressure contact plate 62 and the friction plate 59 can be adjusted. In addition, the above rotation control pin 76 is located in the second regulation groove 75b or the third regulation groove 75c. For example, the rotation position of the rotation regulating pin 76 can be changed every 1/3 of the pitch of the teeth 73. can. In other words, the screwing amount of the pushing body 63 can be adjusted in 3 steps x (number of teeth) of the teeth 73. It is designed to be able to be divided.

[0019] On the other hand, an outer circumferential spline is formed on the outer circumferential surface of the second receiver 55 from the lower side in the axial direction. 80 and a male thread 81 are formed. The outer circumferential spline 80 has an inner circumferential surface. A second operating knob 82 on which a circumferential spline 82a is formed is fitted onto the external thread 8. 1 is screwed with a presser ring 83, and this presser ring 83 allows the above-mentioned second operation to be performed. The knob 82 is prevented from being pulled out. Therefore, the second operating knob 82 When the second receiver 55 is rotated, the first sleeve 15 is moved by this rotation. In addition, the bending tube 6 of the insertion section 3 can be bent in the left-right direction, and at this time, This is because the frictional force between the friction plate 59 and the pressure contact plate 62 acts as rotational resistance of the second operation knob 82. , by adjusting the frictional force using the operating body 69, the second operating knob 82 is fixed. You can also do things like change the rotation angle minutely.

[0020] Further, the presser ring 83 may be formed of an electrically insulating material, but the It is better to be made of metal for added strength. This presser foot is shown in Figures 1 and 2. The ring 83 is located down inside the operating knob 82 and serves as an electrical insulator. It is covered by the operation knob 82. Therefore, the operator should touch this presser ring 83. You will not get an electric shock.

[0021] Note that the upper surface of the pusher 63 is provided to prevent the first tooth plate 70 and the second tooth plate 71 from shifting. When the positioning spring 85 to be stopped and the pushing body 63 rotate within a predetermined range, the A click spring 86 is provided that elastically engages with the rotation regulating pin 76 at the end of the movement. It is being A retaining plate that prevents the positioning spring 85 and click spring 86 from coming off. 100 is located on the tooth plate 71 and is raised by a boss 101 protruding from the operating body 69. The lower play is regulated.

[0022] According to the bending operation device 8 configured in this way, the rotation resistance of the first operation knob 40 is During the assembly process, the resistor is assembled with the first receiving body 26 and the adjusting body 36 screwed thereon. By relatively rotating the The friction plate 27 provided on this first mounting plate 28 and the first receiving body 2 can be aligned. The frictional force with 6 can be changed. In other words, the first receiving body 26 and the adjusting body 36 The braking force can be adjusted simply by rotating the two relative to each other. in this way, After adjusting the braking force, the first outer circumferential spline 3 of the first receiver 26 5 and the second outer circumferential spline 37 of the adjusting body 36, and the first operation knob is placed here. If the inner circumferential spline 41 is fitted to the tab 40 and installed, each of these splines 35, 37 and 41, the relative relationship between the first receiving body 26 and the adjusting body 36 is adjusted. Since the rotation is prevented, the adjustment state of the brake force will not deviate.

[0023] In addition, when adjusting the braking force described above, this adjustment is performed by each of the outer circumferential splines 3 The first receiving body 26 and the adjusting body 36 are rotated relative to each other in one pitch units of 5 and 37. In this embodiment, the splines 35 and 37 are divided into 36 equal parts. Therefore, very small adjustments can be made. Furthermore, the rotation torque of the first operation knob 40 is Since the operating knobs 40 are distributed over the inner circumferential spline 41, the operating knob 40 can be Stress concentrates and causes damage as in the case of connecting to the first receiver 26 with a dowel pin of a book. It's never easy.

[0024] This bending operation device 8 is a bending operation device protruding from the outside of the casing body 10. The first operation knob 40, the operation lever 52, and the second operation knob 8 are the operation members of the section 8a. 2 and the operating body 69, respectively. However, these made of edge material or coated, and metal parts are The electrical components are covered with an insulating material. Therefore, high frequency processing When using fixtures, the surgeon may directly touch metal parts and feel the high-frequency leakage current. There is no electricity. Moreover, the sliding plate 102 and the sliding plate 103 are each connected to a rotating shaft. Reduces sliding resistance.

[0025] Therefore, in the above configuration, the button body 53 attached to the operating lever 52 and the processing tool guide are connected to each other. The operating knob 96 of the conductor operating lever 92 is a They are arranged approximately on the same plane perpendicular to the central axis. That is, the operating lever 52 Regardless of the mounting position of each proximal end portion of the treatment instrument inductor operating lever 92, each finger rest thereof Both parts can be placed at the same height. In this embodiment, the button body 53 of the operating lever 52 is can be lowered to the height of the operating knob 96. Therefore, the first operation knob 40, and accordingly the second operating knob 82 and the operating The height of the body 69 can be lowered sequentially. For this reason, the fingers of the hand gripping the operating section 2 When operating the device, it is closer to the palm of the hand, making it easier to reach and improve operability.

[0026] Note that the present invention is not limited to the above embodiments. For example, the above implementation The operating lever 92 and operating knob 96 in the example may also be used for focus adjustment. stomach. In this case, in FIGS. 1 and 2, the inner end of the rotating cylinder 90 is Connect to the focus adjustment wire and push or pull the focus adjustment wire to adjust the focus. . In addition, the focus adjustment knob and treatment instrument lifting operation knob are aligned perpendicular to the rotation center axis. They may be arranged in one plane. Furthermore, the type of operating knob to which this invention is applied does not matter. Furthermore, the present invention may be applied to at least this operating knob.

[0027]

【Effect of the invention】

As explained above, according to the present invention, the fingers of the hand holding the operating section can easily touch the operating knob. This makes it easier to reach and operate. In addition, the operating knob part By moving closer to the flat side, the operating force on the operating knob is less likely to be applied diagonally. Become. In addition, by making them more compact, the center of gravity is closer to the operating section, and the overall It also reduces the weight and improves operability. Also, you can perform multiple operations with one hand. The action knob can be operated without malfunction.

[Brief explanation of drawings]

FIG. 1 is a vertical sectional view of the left half of a bending operation device according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the right half of the bending operation device according to an embodiment of the present invention.

FIG. 3 is a perspective view of the entire endoscope.

FIG. 4 is a cross-sectional view of a first operation knob portion of the bending operation device.

FIG. 5 is a cross-sectional view of a second operation knob portion of the bending operation device.

FIG. 6 is an explanatory diagram showing the operating range of the operating knob.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Endoscope, 2... Operating unit, 40... Operating knob, 52... Operating lever, 53... Button body, 82... Second operating knob, 96a
...Finger rest.

Claims (1)

[Scope of utility model registration request] 1. An endoscope operating device having a plurality of rotatable operating knobs coaxially stacked on an operating section, wherein one of the at least two operating knobs of the operating knob is located on the operating section. On the other hand, the finger rests of the outer operating knobs are placed closer to the operating knobs on the operating unit side, and the rotational orbits of the finger rests of both operating knobs are arranged on almost the same plane. An endoscope operating device characterized in that finger rests are arranged in a position where they do not interfere with each other.