JPH01292307A - Oscillation driving device for fiber scope inserting jig - Google Patents

Abstract

PURPOSE:To enable smooth oscillation operation by providing plural pieces of wires for oscillation so as to be independent from each other and applying tension to the respective wires. CONSTITUTION:A fiber scope is inserted into a tightly wound coil spring 2 and compression coil spring 3 of the inserting jig 1 and is mounted to one end of 4 pieces of the wires 5 which are provided independently from each other at equally spaced intervals. The other ends of the wires 5 are discretely connected to oscillation operating parts 7 and the tension is discretely applied to the wires 5 by tension imparting bodies. The spring 3 is then oscillated and the direction of the front end of the fiber scope in the spring 3 can be changed by operating the operating part 7 to discretely wind or extend the wires 5. Slackening of the wires 5 and entangling of the wires 5 with the spring 3 are obviated at this time.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides an i! 7 In the 7-eye scope insertion jig for inserting a fiberscope into a canal, the tip of the fiberscope inserted into the insertion jig is oscillated downward, left and right, or diagonally. This relates to a drive device.

(Prior art) The conventional fiberscope insertion jig's "single swing device" inserts the fiberscope into the tightly wound coil spring and compression coil spring of the insertion jig, and inserts four wires at uniform intervals in the circumferential direction of the compression coil spring. Attach the upper and lower wires as a pair, and the left and right wires as a pair, and wind up one wire from each pair of wires (
When the other wire is let out (relaxed), the compression coil spring is swung in the direction of the wire being pulled, and the tip of the fiberscope inside the compression coil spring is also swung in the same direction.

(Problems with the prior art) The part that performs the lVi swing operation usually has a structure in which the inner part that swings the value contracts and the outer part stretches. Wind the wire,
There is no particular problem if you let out the wire that stretches, but if it is a compression coil spring with a pitched oscillation part that contracts on the inside but does not stretch on the outside, you may want to wind or unwind it like that. However, there were problems such as slack in the wire and the wire getting tangled with the compression coil spring.

(Object of the Invention) An object of the present invention is to provide a swinging drive device in which wires do not become entangled even in a fiberscope insertion jig that uses a compression coil spring in the swinging portion.

(Means for Solving the Problems) The oscillating drive device of the fiberscope insertion jig of the present invention 11 is provided in the tightly wound coil spring 2 and the compression coil spring 3 (Fig. 5) of the insertion jig l inserted into the tube. A fiberscope 4 is inserted, and one end of a plurality of wires 5 is attached at appropriate intervals in the circumferential direction of the compression coil spring 3 (see Fig. 5).
, the other end of each wire 5 is individually connected to a swing operating section 7 (Fig. 5), and each wire 5 is individually tensioned by a tension applying body 6 (Fig. 4), and the swing operating section When the wires 5 are individually wound or unwound by operating the wires 7 individually, the compression coil spring 3 swings and the direction of the tip of the fiberscope 4 inside the coil spring 3 also changes (function). FIGS. 1 to 5 show an embodiment of an oscillating drive device for an insertion jig according to the present invention. Figure 4 shows the swing operation section 7 in Figure 3.
The internal structure of the four swing operation parts 7 shown in FIG. 3 are all the same structure.

Figure 5a shows a state in which the compression coil spring 3 is straight, and the opening in the figure shows a state in which the tip of the coil spring 3 is swung downward. To change the compression coil spring 3 from the open state to the square shape 78, pull the wire 5 above the coil spring 3 and loosen the wire 5 below. ” To pull the second wire 5 and loosen the lower wire 5, do the following.

Turn the upper left handle lO of the third ri 4 connected to the upper wire 5 to turn the pulley 11 in FIG. Turn the lower left handle 10 in Figure 3, which is connected to the wire 5 of the pulley 1, in the opposite direction.
1 in the opposite direction, and turn the same pulley 1. Let out the wire 5 from t and loosen the lower wire 5. As a result, the tip of the compression coil spring 3 becomes upward and straight as shown in FIG. 5A.

In this case, each handle lO is independent, so no matter which handle is operated, the other handles are not affected.

Each wire 5 is wound several turns around each pulley 11 as shown in Fig. 4, and a constant tension is always applied to each pulley in the winding direction by a respective tension applying body (a spiral spring in Fig. 54) 6. In addition, the swinging operation part 7 is provided with a spur gear 12 and a ratchet 13 as shown in FIG. They don't match, but the gears mesh in the opposite direction to prevent them from moving. Therefore, the tip of the compression coil spring 3 is fixed in a swung state.

The spur gear 12 is connected to the push rod 14. It is fixed to a push knob 15, and when the push knob 15 is pushed, it moves in the axial direction and is disengaged from the ratchet 13, and the tip of the compression coil spring 3 is released from the swinging state of 11.

(Example) Reference numeral 1 in FIGS. 1 and 2 is an insertion jig, 2 is a tightly wound coil spring used in the transmission section, and 3 in FIG. 5 is a compression coil spring used in the swing section. The compression coil spring 3 is connected to the tip of the tightly wound coil spring 2.

4 of frS21N is a fiber scope, which is inserted into the tightly wound coil spring 2 and the compression coil spring 3.

20 in FIGS. 1 and 2 is the eyepiece section of the fiber scope, 2
1 is a light guide for sending light to the fiber scope.

5 in FIG. 5 is a swinging wire. These four ends are independently provided at equal intervals in the circumferential direction of the tightly wound coil spring 2 and the compression coil spring 3, as shown in FIG. The other ends of these four wires 5 are fixed to a pulley 11 in the swing operation section 7 and wound several turns as shown in FIG.

The pulley 11 has a tension applying body 6 using a spiral spring.
As a result, tension is applied to the wire 5 in the winding direction. As a result, even when the compression coil spring 3 expands and contracts, the wire 5 does not loosen and is always kept at a substantially constant tension.

FIG. 4 shows the internal structure of the swing operation unit 7, and the pulley 11 in this figure is the handle shaft 25, the clutch flange 2
6. Connected to the handle lO via the steel ball 27 1
By rotating the handle 10, the pulley 11 is rotated and the wire 5 is wound up, and by rotating the handle IO in the opposite direction, the wire 5 is let out.

Clair, front flange 26, steel ball 27, handle lO1 wave washer 28. The latch plate 29 is rewired 5 due to overload.
In order to prevent the fiber scope 4 from being cut or damaged, the handle lO is attached so that it will idle when a predetermined force is applied to the pulley 11.

In order to fix the compression coil spring 5 in a swinging state, a spur gear 12 and a ratchet 13 are provided. These two southern soldiers do not mesh in the direction of winding the wire 5 (the direction of swinging i''f), but they mesh in the opposite direction and are arranged with their centers shifted so that they do not move.

In addition, in order to be able to cancel the check mark flJ,
The gear 12 is a push rod 14. It is fixed to the push knob 15, and by pushing the push knob 15 to the left side in FIG. 4, the spur teeth d (12) move in the axial direction (left side) and are disengaged from the ratchet 13.

In FIGS. 1 and 2, 30 is a protective cover that covers the outer periphery of the fiberscope 4, and 40 is an elastic body. These shrink as the fiberscope 4 moves when the eyepiece 20 side of the fiberscope 4 is drawn into the tightly wound coil spring 3 (on the left side in FIG. 2) by bending the tightly wound coil spring 3 into a loop shape, etc. This is to allow the fiberscope 4 to be drawn in smoothly.

This protective cover 30 is a bamboo shoot sleeve, in which a plurality of connecting pipes 30a, 30b, .
1 is attached to the Jli eye part 20 of the fiberscope 4, and one end 32 of the connecting pipe 3On is fixed to the connecting pipe 33. As a result, the protective cover 30 is attached to the fiberscope 4 by bending the tightly wound coil spring 3 into a loop shape.
It is designed so that it contracts when it is drawn toward the left side of Figure 2.

The expandable body 40 is aligned in the axial direction of the fiber scope 4! Base plate 41 and slide rail 4 that can be slid to r
It consists of 2. The base plate 41 has one end 41a attached to the connecting jig 33, and the other end 41b.
is attached to the support 42. Slide rail 4
2, one end 42a is fixed to the eyepiece 20, and the other end 42b
The sides are supported by supports 42. As a result, the slide rail 42 is configured to slide along the base plate 41 when the fiberscope 4 is pulled toward the left side in FIG. 2 by bending the tightly wound coil spring 2 into a loop shape.

(Effect of the invention) The swinging drive device for the fiberscope insertion jig of the present invention has the following features:
Since the plurality of wires 5 are made independent and tension is applied to each wire 5, even if the compression coil spring 3 at the swinging part of the insertion jig l contracts on the inside and does not stretch on the outside, the wires There is no slack in the wire 5, and the wire 5 does not get entangled with the compression coil spring 3 (and the swinging operation can be performed smoothly).

[Brief explanation of the drawing]

Figure 1 is a plan view Ig1 of the fiberscope insertion device.
Fig. 2 is a side view of the insertion device, Fig. 3 is a rear view of the insertion device, Fig. 4 is an IJ diagram of the internal swing operation section of the swinging drive device of the Kibatsu IJI, and Fig. 5 The compression coil spring is a side view of f (straight), the opening is a side view of the same coil spring with its head swung downwards, and ＼ is an explanatory view of the right side of A. The coiled coil spring 3 is the compression coil spring 4, the fiber scope 5 is the wire 6, the tension applying body 7 is the swing operation part

Claims (1)

[Claims] A fiberscope is inserted into the tightly wound coil spring and compression coil spring of the insertion jig, and one end of a plurality of wires is attached at appropriate intervals in the circumferential direction of the compression coil spring.
The other end of each wire is individually connected to a swinging operation section, each wire is individually tensioned by a tension applying body, and the swinging operation section is individually operated to individually wind or wind each wire. A swing drive device for a fiberscope insertion jig, characterized in that when it is extended, a compression coil spring swings and the direction of the tip of the fiberscope within the coil spring changes.