JP2000107123A - Endoscope inserting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform an insertion operation by a small operation force, and make an operater easily perform an examination. SOLUTION: On the external surface of an insertion portion 2 of an endoscope, an advance/retraction index 75 and a rotation index 76 are displayed as an advance /retraction-rotation identification means, and at the same time, on an operation member 11 which is longitudinally movably and rotatably arranged on the insertion portion 2, an element to detect the advance/retraction index 75 and the rotation index 76, is provided. Then, an insertion device 12 which detects an advance/retration-rotation amount to the insertion portion 2, and advances/retracts and rotates the insertion portion 2 of the endoscope based on a detection signal of the detection means, is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope insertion device which can be inserted into a body cavity, a tube hole, or the like by applying reciprocating and rotating operations to an insertion portion.

[0002]

2. Description of the Related Art In recent years, a slender insertion section is inserted into a body cavity to observe the inside of the body cavity, and at the same time, performs a medical treatment using a treatment tool if necessary, or connects the insertion section to a boiler or the like. 2. Description of the Related Art An endoscope apparatus that can be inserted into a tube hole to observe the inside of the tube hole is widely used.

[0003] The insertion portion is formed to have a length of a conduit of a subject to be observed. Therefore, in the case where the observation site is deep in the pipe, the insertion and withdrawal of the insertion portion is not only complicated but also takes time.

To cope with this, for example, Japanese Patent Laid-Open Publication No. 1-1
Japanese Patent No. 48232 discloses a technique in which an advancing / retracting drive unit for applying an advancing / retracting operation is disposed outside the above-mentioned conduit, and the insertion / removal of the insertion portion can be performed by the driving unit.

By the way, since it is difficult to insert the insertion portion into the large intestine and insert it into the S-shaped colon by simply pushing and pulling it, a technique called, for example, the α-loop method has been conventionally used. I have. In this α-loop method, the insertion part is twisted and advanced while bending the curved part to form an α-shaped loop, and then releasing the α-loop to make the S-shaped colon part a smooth curve or a substantially straight part. By doing so, deep insertion of the large intestine is further facilitated.

Further, an insertion device that mechanically moves the insertion portion forward / backward and twists (rotates) to improve the insertability of the insertion portion of the endoscope has been considered. Control by turning on and off the switch.

[0007]

However, the above-described procedure requires the insertion and retraction and torsion of the insertion portion. It is also known that this twisting operation has an effect of facilitating the insertion / removal even when the insertion portion is inserted / removed into / from the tube hole.

Although these forward and backward movements can be added by using the above-mentioned prior art, the twisting movement needs to be added by the operator's hand, and it is difficult to reduce the complexity of the operation.

[0009] Of the forward / backward operation and the torsion operation,
In particular, it has been empirically known that the twisting operation largely depends on the experience and sensation of the operator, and the use of the prior art does not reduce the complexity of the operation.

On the other hand, the surgeon performs a bending operation, an air supply / water supply button in an observation window, an endoscope finding, photography for academic research purposes,
Various operations such as a control button of a VTR or the like have been forced, and the insertion has been complicated.

Further, in the above-mentioned insertion device for mechanically moving the insertion portion back and forth and rotating, the operator has hitherto directly held the insertion portion directly and relied on the operator's experience and feeling to move the insertion portion back and forth and twist. Since the operation has been performed, it is uncomfortable to use an insertion device that moves the insertion portion forward / backward / twisting by a simple switch operation, and it has been difficult to easily insert the insertion unit.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to add an advancing / retreating operation and a rotating operation to an insertion portion, thereby inserting and removing the insertion portion. To provide an endoscope insertion device that facilitates the above.

[0013]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an advance / retreat rotation discriminating means formed on an outer surface of an insertion portion of an endoscope; An operating member disposed on the reversing rotation identifying means so as to be able to move forward and backward, and a detecting means provided on the operating member for detecting an amount of forward and backward rotation of the operating member with respect to the insertion portion based on the forward and backward rotating identifying means; And a drive unit for moving the insertion section of the endoscope forward and backward based on a detection signal of the detection unit.

According to the above construction, the forward / backward rotation discriminating means displayed on the insertion portion is detected with a light operating force enough for the operating member to slide on the insertion portion, and the driving means is controlled based on the detection signal. As a result, the insertion portion can be advanced and retracted and rotated.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 9 show a first embodiment, FIG. 1 is a schematic view of a system of an electronic endoscope, FIG. 2 is a longitudinal sectional side view of an insertion device, FIG. 3 is a sectional view taken along line AA of FIG.
5 is a perspective view of the operation member, FIG. 5 is a cross-sectional view of the operation member, FIG. 6 is a BB cross-sectional view of FIG. 5, FIG. 7 is a CC cross-sectional view of FIG.
Is an index diagram of the outer surface of the insertion portion, and FIG. 9 is a control block diagram.

First, an outline of the system will be described with reference to FIG. The electronic endoscope 1 includes an elongated insertion section 2 to be inserted into an observation target site, a large-diameter operation section 3 having a grip section connected to a base end of the insertion section 2, and an operation section 3 of the operation section 3. The universal cord 4 has a built-in signal cable and a light guide extending from one end, and a connector 5 provided at an end of the universal cord 4.

The electronic endoscope 1 is detachably attached via a connector unit 5 to an external light source device 6, a video processor 7, and a bending motor driving device 9 for driving a bending motor (not shown) provided on the operation unit 3. It is connected and used so that an observation image can be displayed on the monitor 8. The video processor 7 has a VTR deck (not shown),
A video printer, video disk, image file recording device, and the like can be connected.

In the vicinity of the bed 10, an insertion device 12 is movably arranged. An operating member 11 is provided at an intermediate position between the insertion device 12 and the distal end portion of the insertion portion 2 and is inserted into the insertion portion 2 so as to be able to advance and retreat and rotate.

Next, the forward / backward driving means will be described with reference to FIGS. The insertion device 12 has an insertion hole 13 through which the insertion portion 2 is inserted substantially horizontally penetrating, and the insertion portion 2 is, for example, an insertion hole base end 13 set to the right in the drawing.
a, and is set to project from the insertion hole projecting side 13b in the left direction in the figure.

The part deviated to the insertion hole base end side 13a is
A plurality of recesses 14 are provided, and balls 15 for moving the insertion section 2 forward and backward and rotating are loosely fitted in the respective recesses 14. A pressing member 16 is provided on the opposite side of the insertion hole 13 with the ball 15 interposed therebetween. The pressing member 16 includes a slide shaft 17 and a large-diameter retainer 18 fixed to one end of the slide shaft 17. This retainer 1
A driving member 19 having a concave surface 19a having substantially the same curvature as the outer periphery of the ball 15 is attached to a side of the driving member 19 facing the ball 15.

On the opposite side of the slide shaft 17 from the retainer 18, the slide hole 1 in which the bottom 14a of the concave portion 14 is formed.
4b is freely inserted. A coil spring 20 is interposed between the bottom portion 14a and the retainer 18, and the ball 15 is constantly pressed toward the insertion hole 13 by the urging force of the coil spring 20, and is provided on the insertion hole 13 side of the concave portion 14. Stopped by the locking member 21 that has been moved. When the ball 15 is stopped by the locking member 21, the distance between the opposing balls 15 is set slightly shorter than the diameter of the insertion portion 2. Here, the friction coefficient of the ball 15 is set to be very small, and is set so that when the insertion section 2 advances and retreats, the ball rotates smoothly and grips the insertion section 2.

A friction member 22 is disposed on the side of the ball 15 disposed in the concave portion 14 above the insertion hole 13 with respect to the axis of the insertion hole 13. A concave surface 22 a having a curvature substantially equal to the outer circumference of the ball 15 is in contact with the surface of the ball 15.

On the opposite side of the concave surface 22a of the friction member 22, a shaft 25 extends. A coil spring 24 is interposed between the side wall of the friction member 22 and the bottom portion 14 a of the shaft 25 via a thrust bearing 23. The slide bearing 23 constantly urges the ball 15 by the urging force of the coil spring 24.

The end of the shaft 25 on the side opposite to the friction member 22 from the side opposite to the concave surface 22a of the friction member 22 projects outside the recess 14 through the hole 14c formed with the bottom 14a of the recess 14. . The protruding end of the shaft 25 and the output shaft 27 a of the electromagnetic clutch 27 are coupled to the coupling 2.
6 and further connected to an output shaft 28 a of a motor 28 via an electromagnetic clutch 27.

The coupling 26 has a serration formed inside a cylindrical housing, an end of a shaft 25 inserted into the housing, and an electromagnetic clutch provided opposite the end. Gears (not shown) are formed on the output shaft 27a of the 27, and the gears and the serrations are meshed so as to be able to move.

When the motor 28 is rotated and the electromagnetic clutch 27 is connected, the rotation of the output shaft 28 a of the motor 28 is transmitted to the shaft 25 via the coupling 26, so that the friction member 22 rotates in the longitudinal direction of the insertion hole 13. The insertion portion 2 inserted into the insertion hole 13 is moved forward and backward.

Next, the rotation driving means will be described. As shown in FIG. 2, another friction member 29 is disposed on the side of the ball 15 disposed in the recess 14 above the insertion hole 13 with respect to the axis of the insertion hole 13. Concave surface 29a having substantially the same curvature as the outer periphery of ball 15 formed on
Are in contact with the surface of the ball 15.

On the opposite side of the concave surface 29a of the friction member 29,
A shaft 30 extends. An end of the shaft 30 opposite to the friction member 29 is protruded outward from the recess 14 through a hole 14 c formed with a bottom 14 a of the recess 14, and is provided in a motor chamber 34 provided adjacent to the recess 14. It is inserted so that the distance can move. A coil spring 36 is interposed between the friction member 29 and the bottom 14a via a thrust bearing 35. The friction member 29 is pressed against the ball 15 by the urging force of the coil spring 36.
The protruding end of the shaft 30 and the electromagnetic clutch 32
The output shaft 32a of the motor 33 is connected to the output shaft 32a of the motor 33 via the electromagnetic clutch 32.
a.

When the motor 33 is rotated to connect the motor chamber 34, the ball 15 is rotated in a direction perpendicular to the axis of the insertion hole 13, and the ball 15 is rotated by the insertion portion 2 inserted into the insertion hole 13. Is added.

A cleaning chamber 37 having an enlarged diameter is formed substantially at the center of the insertion hole 13. The cleaning chamber 37 includes a plurality of cleaning brushes 3 arranged in parallel with the axis of the insertion hole 13.
8 are provided in a circular shape. The outer periphery of the cleaning brush 38 is exposed in the insertion hole 13, and one end of a rotating shaft 38 a of the cleaning brush 38 is rotatably inserted into a motor chamber 39 provided on the concave portion 14 side of the motor chamber 34, The pinion 40 is formed at the inserted portion. A plurality of motors 41 corresponding to the cleaning brush 38 are provided in the motor chamber 39.
Are arranged. A large-diameter gear 42 is provided on the output shaft 41 a of the motor 41 so as to mesh with the pinion 40.

A plurality of nozzles 43 are opened above the cleaning chamber 37, and a cleaning liquid tank 4 provided above the insertion device 12 is provided through a cleaning liquid passage 45 provided with a pump 44.
6 is connected.

The cleaning liquid 47 stored in the cleaning liquid tank 46 passes through the cleaning liquid passage 45 via the pump 44 and is discharged from the nozzle 43 into the cleaning chamber 37, and the motor 41
When the is rotated, the cleaning brush 38 is rotated, and the outer periphery of the insertion section 2 is cleaned.

The cleaning liquid 47 discharged into the cleaning chamber 37 is supplied between the cleaning chamber 37 and the recess 14 of the insertion hole 13 by the operation member 1.
A seal member 48 for preventing movement to one side is interposed.

An inclined surface 37 a is formed at the bottom of the cleaning chamber 37, and is guided to the opening of the discharge passage 49. The discharge passage 49 communicates with a waste liquid tank (not shown) provided below the insertion device 12, and waste liquid used for cleaning the insertion unit 2 is stored in a waste liquid tank (not shown) via the discharge passage 49. It is supposed to be.

A lubricant is discharged from the insertion hole 13 on the side of the insertion hole projecting side 13b. That is, the insertion device 1
2 and a lubricant tank 50 provided above the lubricant tank 5
It comprises a pump 52 for pumping the lubricant 51 stored in the cylinder 51 and a lubricant passage 53 to which the lubricant 51 is fed. The opening of the insertion hole 13 of the lubricant passage 53 is
3 and communicates with a lubrication chamber 54 which is formed at the same position as the center of the axis and has a slightly larger diameter than the insertion hole 13. When the lubricant 51 sent by the pump 52 is supplied to the lubrication chamber 54, the insertion portion 2 through which the insertion hole 13 is inserted is inserted.
The lubricant 51 is adhered to the outer periphery of the.

A lubricating lubricant is provided on the protruding side 13 b of the insertion hole 13, having elasticity, having the same axis as the axis of the insertion hole 13, and having a hole having substantially the same diameter as the outer diameter of the insertion portion 2. 55 are provided. When the insertion portion 2 passes through the hole of the cleaning liquid passage 45,
The lubricant 51 attached in the lubrication chamber 54 is evenly attached to the outer peripheral surface of the insertion section 2.

The operation member 11 will be described with reference to FIGS. The operation member 11 is substantially elliptical, has a streamlined shape, and has a shape that is easy to grasp. On the top,
An air supply / water supply switch 56 for supplying air / water to an observation window (not shown), a suction switch 57 for controlling a suction pump (not shown), remote switches 58, 59, 60, 61 for controlling various recording devices such as a printer and a VTR; There are provided a priority switch 62 for giving priority to reading or not reading a signal from the insertion section 2 described later, and a speed setting switch 63 for controlling the advance / retreat and rotation speed described above. Here, the air supply / water supply switch 56 is, for example, a two-stage switch. The first stage is air supply, and the second stage is water supply.

The speed setting switch 63 is, for example, A,
The speed setting of three patterns B and C can be switched in the order of A → B → C → A. In the embodiment, the forward / backward / rotation is set by one speed setting switch 63, but may be provided separately. Other switches are simply O
An N / OFF switch, which is intensively controlled by the video processor 7. The control signals from the various switches are received by a receiving unit 7a provided in the video processor 7 by a wireless remote controller or the like.

Further, an insertion hole 64 is provided at a central portion in the longitudinal direction of the operation member 11 so that the insertion portion 2 can be inserted. In the insertion hole 64, a concave portion 65 is provided in the right and left directions of the drawing with the center as a boundary. A ball 66 is loosely fitted in each recess 65. Ball 6
A pressing member 67 is disposed on the opposite side of the insertion hole 64 with the 6 interposed therebetween. The pressing member 67 includes a slide shaft 68 and a large-diameter retainer 69 fixed to one end of the slide shaft 68. Ball 6 of this retainer 69
A friction member 70 having a concave surface 69a having substantially the same curvature as that of the outer periphery of the ball 66 is attached to the side opposite to the side 6.

A slide hole 64b formed in the bottom 64a of the insertion hole 64 is inserted into the slide shaft 68 on the opposite side of the retainer 69 so as to freely move. Slide hole 64
The ball 66 is always pressed in the direction of the insertion hole 64 by the urging force of the coil spring 71, and the speed setting switch of the insertion hole 64 is provided. It is stopped by a locking member 72 provided on the 63 side. The distance between the opposing sides of the ball 66 when the ball 66 is stopped by the locking member 72 is set slightly shorter than the diameter of the insertion portion 2. Here, the coefficient of friction of the ball 66 is set to be very small, and is set so that when the insertion portion 2 advances and retreats / rotates, it rotates smoothly and grips the insertion portion 2.
Here, the upper ball 66 and the lower ball 66 in the figure are located at slightly shifted positions. Thereby, the operating member 1
In addition to preventing the insertion portion 2 from being blurred when the first member 1 is moved, a signal described later is easily read.

The insertion hole 6 at the center above the insertion hole 64
4, two elements 73 a and 73 b containing a light receiving element such as a photo interrupter are provided in parallel with the axis of the insertion hole 64 in order to read an advance / retreat signal from the insertion section 2 described later.

Further, in order to read a rotation signal from an insertion portion 2 to be described later, elements 74a and 74b having a built-in light receiving element such as a photo interrupter are inserted through the insertion hole 64 at the central portion below the insertion hole 64. 64 parallel to the radial direction
It is arranged individually.

FIGS. 8 (a) to 8 (c) show the outer surface of the insertion section 2, and the advance / retreat indices 7 are arranged at equal intervals in the axial direction of the insertion section 2.
5 are displayed, and the rotation indicators 76 are displayed at equal intervals in the circumferential direction of the insertion portion 2. Therefore, the forward / backward index 75 and the rotation index 76 are orthogonal to each other and are formed in a lattice pattern. Further, the interval between the forward and backward indexes 75 is shifted from the element 73a to the element 73b by an antiphase. That is, when one of the forward / backward indicators 75 is completely applied to the element 73a, the element 74b
, The other one of the forward / backward indicators 75 is not applied. Progression and removal are determined by which of the elements 73a and 73b reads the signal first.

The elements 73a and 73b read the forward / backward signal from the forward / backward index 75. For example, the operating member 11
Are moved to the front end side by 10 indices 75, the elements 73a and 73b receive it as a signal and recognize it as 10 pulses. The finer the interval between the forward / backward indicators 75, the more precise the control.

Similarly, the elements 74a and 74b are
The rotation signal is read from. For example, when the operation member 11 is rotated rightward by five rotation indexes 76 with respect to the insertion portion 2,
The elements 74a and 74b receive it as a signal and recognize it as five pulses. The smaller the interval between the rotation indicators 76, the more precise the control.

Next, a bending operation and a control method at the time of insertion will be described with reference to FIG. In order to bend the bending portion 2a provided at the distal end of the insertion portion 2 in the operation portion 3,
A UD motor 77 for down angle and a RL motor 78 for right / left angle are built in. Further, a bending switch 79 for operating the bending portion 2a is provided. The bending switch 79 may be a joystick type, a cross type tact switch type, or a seesaw type switch. Any switch that can freely bend can be used.

When the bending switch 79 is operated, it is input to the signal processing circuit 81 and is processed by the central control circuit 89.
A control signal is output from the central control circuit 89 to a bending control circuit 88 having a built-in motor driver, and the UD motor 77 or the RL motor 78 rotates, and the bending portion 2a is bent.

The forward / backward operation will be described. Operation member 11
Is moved toward the distal end of the insertion section 2, the operation member 1
The elements 73a and 73b disposed in the first unit read how many advance / retreat indices 75 on the outer surface of the insertion section 2 have passed. This signal is transmitted and received by the receiving unit 7a. The signal received by the receiving section 7a is input to the signal processing circuit 81 and is processed by the central control circuit 89. A control signal is output from the central control circuit 89 to the advance / retreat / rotation control device 83, the motor 28 rotates, and the insertion section 2 advances / retreats.

Here, the operation member 11 has the priority switch 6
2, the signal is received by the receiving section 7a only when the priority switch 62 is turned on. It is possible to move forward and backward only while pressing the priority switch 62. Although nothing is interposed between the operation member 11 and the insertion device 12 in FIG. 1, a guide tube, a guide groove, or the like may be provided. Further, the operation member 11 may be disposed on the rear side of the insertion device 12 to prevent the operation member 11 and the insertion device 12 or the insertion portion 2 between the subjects from sagging. Here, the insertion length may be detected by a signal at the time of advance / retreat.

Although the advancing / retracting operation has been described, the rotation operation is the same, and a description thereof will be omitted. On the other hand, the speed setting switch 63 can set the speed of the forward / backward operation and the rotation operation. For example, if the advance / retreat speeds are A, B, and C, and the rotational speeds are X, Y, and Z, each time the speed setting switch 63 is pressed, AX → BY → CZ → AX is set. And the rotation speed can be arbitrarily changed. As a changing means, it can be arbitrarily controlled by the forward / backward / rotation control circuit 83, but the signals from the forward / backward index 75 and the rotation index 76 may be inputted one by one. Further, two speed selection switches for the forward / backward operation and the rotation operation may be provided.

It is also possible to separately provide an operation switch in which the bending operation is associated with the forward / backward / rotating operation, and perform a certain operation by pressing this switch. For example, the insertion section 2 is twisted 120 ° to the right while the down curve is applied,
In addition, a series of operations of removing 150 mm may be performed.

Accordingly, a large-capacity memory is built in the central control circuit 89 so that the image output to the monitor 8 and the bending section 2
a and the operation of the insertion section 2 may be recorded so that the surgeon can examine and verify the bending operation in advance / retreat / rotation operation later, and set the operation switch. Alternatively, the central control circuit 89 may select an operation that is frequently performed. Further, a dark area tracking means may be further added to the above operation as an additional operation.

Further, the position at the start of the inspection is stored in order to prevent over-twisting. For example, the speed becomes slower when one rotation or more is performed. Air / water switch 56
Is operated, the signal is input to the signal processing circuit 81 and is processed by the central control circuit 89. A control signal is output from the central control circuit 89 to the air / water control circuit 86, and air or water is supplied to an observation window (not shown) at the tip of the insertion section 2.

When the suction switch 57 is operated, it is input to the signal processing circuit 81 and is processed by the central control circuit 89.
The control signal is output from the central control circuit 89 to the suction pump control circuit 87, and the suction is performed through a suction hole (not shown) provided at the tip of the insertion section 2.

An image obtained by the objective optical system unit 92 having a built-in solid-state image sensor disposed at the tip of the insertion section 2 is input to a video signal processing circuit 82 and is monitored via a central control circuit 89. 8 is output as an image.

On the other hand, when the central control circuit 89 recognizes the control to advance the insertion section 2 and outputs a control signal to the forward / backward / rotation control circuit 83, not only the forward / backward / rotation control circuit 83 but also the lubricant pump control circuit A signal is also output to the pump
Activate Therefore, the lubricant 51 adheres to the insertion portion 2 only when the insertion portion 2 advances, and the insertion portion 2 can be inserted in an extremely good state.

The signal of the end of the inspection is sent to the central control circuit 89.
Is recognized, a control signal is output to the cleaning agent pump control circuit 84, and the pump 44 and the cleaning brush 38 operate. At this time, the central control circuit 89 simultaneously operates the forward / backward / rotation control circuit 83
And output a signal to rotate the motor 28 to remove it,
The entire length of the insertion section 2 is washed. The examination end signal may be provided separately on the operation member 11 or on a patient data filing device or the like. Further, it may be performed automatically when the main power supply of the insertion device 12 is turned off.

Here, a method of cleaning the insertion device 12 will be described. In order to clean each part of the advancing / retreating drive means, the rotation drive means, the insertion part cleaning means, and the insertion part lubrication means which are opened in the insertion hole 13, for example, instead of the insertion part 2, a long and thin cleaning brush (not shown) It may be made to wash by moving back and forth and rotating.

The brush length of the cleaning brush is longer than the inner diameter of the insertion hole 13 and is formed to reach the bottom 14 a of the recess 14. The cleaning brush is provided with a cleaning liquid 47 from the nozzle 43.
While being included in the brush portion, it proceeds to the side of the insertion hole protruding side 13b, so that each part in the concave portion 14 and the bottom portion 14a can be washed. For example, although not shown, the cleaning liquid passage 45 and each recess 14 communicate with each other via an electromagnetic valve or the like, and the cleaning valve 47 is opened during cleaning and the cleaning liquid 47 flows into the recess 14.

Although not shown, the cleaning liquid passage 45 and the portion of the lubricant passage 53 near the pump 52 are communicated via an electromagnetic valve or the like. At the time of cleaning, the electromagnetic valve is opened and the cleaning liquid 47 flows in the lubricant passage 53, so that the inside of the lubricant passage 53 can also be cleaned. Thereby, the inside of the insertion hole 13 can be washed, and the insertion portion 2 can be inserted in a good state. The above series of operations includes:
Although not shown, a cleaning SW may be arranged in the control device, and a series of operations may be performed when the cleaning SW is pressed.

FIG. 10 shows a second embodiment, in which a joystick 93 as a bending operation means is added to the operation member 11 of the first embodiment. Thus, most of the operation can be performed by operating the operation member 11.

FIG. 11 shows a third embodiment, in which the operation member 11 of the first embodiment is divided into an upper side and a lower side centering on the α portion. One piece of the holding member 97 having the shaft 96 is provided on the upper body 94 of the α portion, and the other piece is provided on the lower body 95. Thus, the upper body 94 and the lower body 95 can be freely opened and closed about the shaft 96 as a fulcrum. Protrusions 98 are provided on the multi-end side of the upper main body 94, and engage with the locking members 99 provided on the multi-end side of the lower main body 95 so that the upper main body 94 and the lower main body 95 are fitted. It has become.

The outer surface and the inside of the operation member 11 can be cleaned by a cleaning brush such as a toothbrush or a cleaning brush indicated by the cleaning brush 38, so that the operation member 11 can always be operated in a good condition.

In the above embodiments, the operation of the bending portion 2a is performed by a motor. However, for example, a type in which the bending portion 2a is bent by manually operating a bending knob provided on the operation portion 3 may be used.

According to the above embodiment, the following configuration is obtained. (Supplementary Note 1) Advancing / retreating rotation identifying means formed on the outer surface of the insertion portion of the endoscope, and an operating member disposed on the advancing / retreating rotation identification means of the insertion portion of the endoscope so as to be able to advance and retreat. Detecting means provided on the operating member for detecting the amount of advance / retreat rotation of the operation member with respect to the insertion section based on the advance / retreat rotation identification means; and An endoscope insertion device comprising: driving means for rotating forward and backward.

(Supplementary Note 2) The endoscope insertion device according to Supplementary Note 1, wherein the forward / backward rotation identifying means is a forward / backward index and a rotation index displayed on an outer surface of the insertion section. (Supplementary Note 3) The operation member has an insertion hole through which the insertion portion of the endoscope is inserted, and a plurality of balls that elastically press in the axial direction of the insertion portion are arranged inside the insertion hole. 2. The endoscope insertion device according to claim 1, wherein

(Supplementary Note 4) The driving means includes an insertion device having an insertion hole through which the insertion portion of the endoscope is inserted, and a plurality of elastic members which press the inside of the insertion hole elastically in a new axial direction of the insertion portion. 2. The endoscope insertion device according to claim 1, further comprising a ball, and a motor that moves the insertion portion forward and backward by rotating the ball.

(Supplementary Note 5) The endoscope insertion device according to Supplementary Note 1, wherein the detection means is a light receiving element that optically reads an advance / retreat index and a rotation index of the insertion section. (Supplementary Note 6) A guide path that guides the insertion section of the endoscope so as to be able to move forward and backward, and an amount of advance and retreat rotation of the insertion section of the endoscope on the inner surface of the guide path is detected, and the endoscope is detected based on the detection signal. An operation tool for an endoscope insertion device, comprising: a detection unit that transmits a signal to a drive device that moves the insertion portion forward and backward.

(Supplementary note 7) The operating tool for an endoscope insertion device according to Supplementary note 6, further comprising a bending operation member of the endoscope bending portion. (Supplementary note 8) The operating tool of the endoscope insertion device according to Supplementary note 6, further comprising a fluid control operation member of the endoscope.

[0070]

As described above, according to the present invention, it is possible to perform the insertion operation with a light operating force enough to slide the operation member on the insertion portion without considering the experience and feeling until now. The surgeon can inspect easily. Therefore, although the burden on the surgeon is large and only a few cases can be examined, the present invention has the effect of reducing the burden on the surgeon and performing a multiple-fold examination.

[Brief description of the drawings]

FIG. 1 is a system schematic diagram of an electronic endoscope according to a first embodiment of the present invention.

FIG. 2 is a vertical side view of the insertion device of the embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a perspective view of the operation member of the embodiment.

FIG. 5 is a sectional view of the operation member of the embodiment.

FIG. 6 is a sectional view taken along line BB of FIG. 5;

FIG. 7 is a sectional view taken along line CC of FIG. 5;

FIG. 8 is an index diagram of the outer surface of the insertion section of the embodiment.

FIG. 9 is a control block diagram of the embodiment.

FIG. 10 is a perspective view of an operation member according to a second embodiment of the present invention.

FIG. 11 is a sectional view of an operation member according to a third embodiment of the present invention.

[Explanation of symbols]

 2. Insertion part 11 Operation member 12 Insertion device 73a, 73b, 74a, 74b Element 75 Advance / retreat indicator 76 Rotation indicator

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hisao Yabe 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industrial Co., Ltd. (72) Koichi Yoshimitsu 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Norio Matsui 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Atsushi Watanabe 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (72) Inventor Tsuyoshi Urasaki 2-43-2 Hatagaya, Shibuya-ku, Tokyo F-term within Olympus Optical Co., Ltd. (reference) 2H040 BA21 BA23 DA03 DA21 DA22 DA43 DA54 DA57 EA01 GA02 4C061 AA00 BB01 CC06 DD03 FF11 FF21 JJ06

Claims (1)

[Claims] 1. An advance / retreat rotation identifying means formed on an outer surface of an insertion portion of an endoscope, and an operation member disposed on the advance / retreat rotation identification means of the insertion portion of the endoscope so as to be able to advance and retract. Detection means provided on the operation member for detecting the amount of advance / retreat rotation of the operation member with respect to the insertion section based on the advance / retreat rotation identification means; and an insertion section of the endoscope based on a detection signal of the detection means. An endoscope insertion device, comprising: driving means for rotating the arm forward and backward.