JPS5878635A - Endoscope apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention is characterized by a motor (two-way bending and driving the insertion section).
There is one internal mirror device to operate.

In recent years, in order to improve the operability of one-turn operation of an endoscope, the bending mechanism connected to the insertion part has been driven by a motor (:
However, if the operator does not grasp the curvature angle of the insertion section, the insertion section may be curved within a body cavity, causing the tip to bend. In the worst case, there is a risk of damaging or cutting the body cavity.For this reason, in the past, for example, in Ruyo 1
:、Motor drive side aS material(：Adjacent part(-Angle of curvature C of the insertion part: Mechanically (2) depending on the displacement.This displacement will notify the endoscope operator(2) of the bending angle( =
It was configured. However, the provision of the above-mentioned members had the drawback of complicating the structure of the endoscope body and increasing manufacturing costs.

The present invention was made in view of the current situation in Japan, and its purpose is to provide an operation cover for a curved operation section and a curved 4! ! There is an electric FFJ (-) which detects the amount of movement of the paulownia and controls the amount of movement of the bending machine box accordingly, and provides a simple and inexpensive internal FFJ.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In Figures 1- and 2, C-2, two motors (for example, motors 4 and 6 that can rotate in forward and reverse directions are housed in the internal mirror body 2). Drum bodies 8.10 are each fixed to the shaft, and a wire 12.14 is wrapped around the periphery of the drum body 8.10 (=). One motor (first motor) 4 (: interlocking wire 12
is inserted into the insertion portion 16, and its two ends 12a.

Jjb is the end portion of the curved portion 18 (the two are fixed opposite to each other; the end portion 14a of the wire 4 is interlocked with the other motor (second motor) 6).

14b is also the tip of the curved portion and is fixed in two directions so as to form approximately an angle with the ends 12a and 12b of the wire 12.

The curved part J8 of the insertion part J6 is the number of joints 18a'
, 18b, 18c, 18d-, and the first
and second motor 4.6 section = interlocking wire 12.14
are pulled, the curved portion 18 curves in an arbitrary direction C: up, down, left and right, ε, and moves the tip *mxo in an arbitrary direction (
= Can be matched.

Potentiometers 22, 24 are mounted on the drum bodies 8, 10, respectively. One button V yometer 2'2 has terminals 22a and 22b.

zzcik1, the 70 sliding contact is configured so that it rotates in conjunction with the motor 4 of #PJl above.
Therefore, the output voltage of the V yometer 22 changes in accordance with the amount of operation 62 of the drum body 8 which rotates in conjunction with the motor 4 of 111. The other potentiometer 24 is similarly configured. wiLfIA is omitted.

In FIG. 1, reference numeral 26 indicates a bending operation member. Operate the bending operation member 26 - Move the bar 28 to the 2-tral position as the center C2 and press #! 1 If you operate from +wJζ2 in any direction including the rear left and right eggs, the cherry blossom Ik
lI heavy, that is, the operation lid C2 corresponds to the above-mentioned No. 1 and 11/1.
．． Two motors 4.6 are driven by C2. That is, Doki Acupuncture Lever 28 lines! 2 Figure 6 2 long ships 2 bond thin rods 2 bolts C 2, 2 fork points 30 (2 attached, at the same time: 2 rotating frames 32.34 C 2 formed slender one 36.38 These 1i21Iv
The frames 32, 34 are housed, for example, orthogonally to each other, and pivot about axes 40, 42 in response to the operating levers 28 and 28, respectively.

The shaft 4(+, 42(2) is equipped with a button V yometer 44°46, and the movement i1(
: The corresponding output voltage is underestimated (two configurations).

Inside the main body 2 (Second is history≦Nilight kite 50 and image guide 52 are stored.Light guide 60
It extends and lies inside the matchmaker 16, and its one end, that is, the light emitting end 54, is wrinkled within the tip of the wedding arm 20.
The light guide 50 is further inserted and extended into the main body 52 (= a universal coat 56 to which it is coupled), and is drawn by a known source of not less than 1 inch. On the other hand, the image guide 62 is inserted through the insertion portion 16P3, One end of it, that is, the light input $52a is arranged so that the objective lens 58 (two close-up mirrors) is rotated. The light beam 6o emitted from the image kite 52 is reflected by the inner wall 62 of the body, passes through the objective lens 58, and enters the image kite 52.
Two people are shot. In addition, the image guide 52 has a basic salary h
The tangent connected to the eyepiece lens 64 is connected to the eyepiece lens 66.

12.13 shows a relaxer that absorbs the slack in the wire 6: to prevent the wire 12.14 from coming into contact with other parts in the slack body 2... tsS graphic double motor For example, an electric four-way circuit is shown including the first motor 4 (two interlocking potentiometers 22 and two interlocking potentiometers 26C, for example, a potentiometer 46). The direct power supply 740 is connected between the two poles (the intermediate terminal 46b is connected to the operator 78 via the resistor 76 and the C2, 6: feedback resistor 8).
The motor of Ml (2 is connected through 0. The upper g is connected in parallel with the potentiometer 46 (= the other potentiometer 22 is connected, and its intermediate terminal JJb is connected through the resistor 82 to the operational amplifier 78 (= connected .Furthermore, the output terminal of the sales amplification circuit 78 forms a current amplifier 83 and connects each other with C.
: #C is connected to the pace of 21- transistors 84 and 86 of opposite polarity. N, PN) transistor 84 and P
NP) The emitters of the transistors 86 are connected to each other (=commonly connected) and connected to the first motor 4. Between the collectors of these transistors 84 and 86, for example, two current sources 88 and 90 are connected. A servo control circuit 92 is formed by a current amplifier 83 consisting of a StW wheel 8S18, a transistor 114, and a B&. Moving frame body 34 (potentiometers 24, 44 that move in series)
The circuit structure including the above is also the same as described above, so the explanation thereof will be omitted.

The operation of an embodiment configured in this way will be described. Now, when the operating lever 28 is pushed in the direction of the arrow 94 indicated by the second -C: mark, the rotating frame 32 is also pushed in the direction of the arrow 94. At this time, the sliding contact of the potentiometer 46 also moves to the terminal 46C911 in response to the operation of the rotating frame 32, so if, 3 m <= the terminal voltage V of the intermediate terminal shown increases. , intermediate terminal 22b of potentiometer 22
becomes higher than the terminal voltage V. This rice supply, ■Sakusen 11
The output terminal ζ of the i1 unit 78 generates a negative voltage (PNP)
The transistor 86 becomes conductive, and the first motor 4 is supplied with an output voltage (an electric ratio proportional to two), and the motor 4 is rotated once. 211V
(Direction 6 of the arrow indicated by reference numeral 96: The wire 12 is rotated in the direction of the arrow 98 (= pulled. As a result, one part of the nuclear wire 12, for example, the end 14.b, is pulled and inserted s1
The curved portion 18 of No. 6 is curved downward. In this situation (:), the drum body 8 of the first motor 4 (:: The mounted bodensiometer 220 slide * contact also moves towards the terminal 22C side, so the intermediate terminal; 2 b (1) The terminal voltage Vt (Figure 3) has also increased.

Therefore, the terminal voltage l of the ToJ 9I child 22b in the above.

When the terminal voltage y becomes the actual value, the output voltage of the operational amplifier b78 becomes approximately 0, so the transistor 86 is cut off and the first motor 4 stops driving. . In this way, the output voltage ν of the potentiometer 44 provided in the bending operation member 26 (: the output voltage ν of the provided potentiometer 44 changes by 1 s.) as the amount of operation of the operation lever 28 changes, and during this time the motor 4 of 8141
Also mentioned above! ! The JR lever collector rotates accordingly. At this time, the potentiometer 22 interlocks with the motor 4E and changes the output voltage v2 according to the amount of operation of the motor 4 (◎), and as soon as the blank between the output voltages V and V becomes ζ=I: The motor 4 is stopped.

As mentioned above, the operation lid of the curved operation section 26 is electrically detected by the potentiometer 44°46+2, and the drum body 8. Potentiometer 2: jl,
24 (: It is configured to detect electrical C2. Therefore, the overall structure of the endoscope can be greatly simplified, and its manufacturing cost can also be reduced. , the potentiometer 44 of the bending operation section 26
゜46 and 1st and #! The respective output voltages of the potentiometers 22 and j4 of the motors 4 and 6 of
The servo control circuit 92 including the electric wire: where! By doing this, the operation * (accurate 1:
This can be done by determining the amount of movement of the first and second motors 4.6 that follow.

Therefore, family celebration fIj! , and the bending motion of the insertion portion 16 can be controlled without any time loss.The present invention is not limited to the above-mentioned die example, and can be modified in any number of ways. For example, the bending operation part does not necessarily have to be provided on the main body of the inner mirror, and may be provided, or the bending operation part can be configured as a separate body to allow for the septal operation. ◎ As mentioned above, ζ: The present invention (the second bend is a simple and inexpensive endoscope with a simple structure and a simple structure) can be provided.

[Brief explanation of drawings]

FIG. 1 schematically shows the overall configuration of an embodiment of the present invention, and FIG. 2 shows an enlarged view of the two-tiered fish cage component in the main body of the turtle 1. FIG. 3 is a one-shot circuit diagram of an embodiment of the present invention. 2...Main unit, 4.6...Mo:;,=Evening, 8.10
... Drum body, 16... Insertion part, 18... Curved part, 22゜24.44.46... Potentiometer, 2
6... Curved operation section, 28... Operation lever, 32.3
4... Rotating frame body, 78... Negative 1# amplifier, 92 ・
Surho system (kltgIwIo

Claims (2)

[Claims] (1) Operation amount C of a bending operation member that has a bending mechanism and a motor that changes the direction of the tip of the insertion section: An endoscope in which the bending mechanism is driven by the motor (2) a detection means for electrically detecting the amount of operation; An endoscope apparatus comprising: a control means. (2) The detection means includes a potentiometer that operates in accordance with the operation amount (2) of the bending operation section, and the motor control means detects the difference between the potentiometer that operates in conjunction with the motor and the output 11 pressure of the potentiometer. An endoscope apparatus according to Item 1 of the scope of Patent No. 1W, characterized in that it is configured to include a servo control path (9) that operates in response to the following.