JPH0819515A - Simple type endoscope device - Google Patents

Abstract

PURPOSE:To provide a simple type endoscope device which does not require battery replacement for an illumination light supplying unit and is free from risk of interruption of the endoscopic inspection on the way of its procedure. CONSTITUTION:The incident end of a light guide 9 for illuminating an object to be photographed is arranged in the operation part 2, and an illumination light supplying unit 30 for supplying illumination light to the light guide 9 is installed removably relative to the operation part 2. In this simple type endoscope device, an AC/DC adapter 60 to emit a specified DC voltage upon being connected with a commercial AC main is furnished in such a way as capable of being connected with the light supplying unit 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simplified endoscope apparatus in which an illumination light supply unit for supplying illumination light to a light guide is detachably attached to an operating portion.

[0002]

2. Description of the Related Art In a so-called simple endoscope device in which a light emitting body for illumination is provided in an operation portion, an illumination light supply unit having a miniature bulb and a dry battery as its power source is attached to the operation portion of the endoscope. It has a structure that can be used.

[0003]

However, if a battery is used as the power source of the light source, the battery will be exhausted during the endoscopic examination and the illumination will be dark, so that the endoscopic examination can be continued. It may disappear.

In such a case, it is very troublesome for the doctor to replace the battery during the examination, and it is a great pain for the patient who is kept waiting during that time. Unfortunately, if there is no replacement battery, there is a serious inconvenience that the inspection must be stopped halfway.

Therefore, an object of the present invention is to provide a simplified endoscope apparatus which does not require replacement of the battery of the illumination light supply unit and which does not have a possibility of interrupting the endoscopic examination.

[0006]

In order to achieve the above object, the simplified endoscope apparatus of the present invention arranges an incident end portion of a light guide for illuminating a subject in an operating portion and also has the above-mentioned light. In a simple endoscope apparatus in which an illumination light supply unit for supplying illumination light to a guide is detachably attached to the operation portion, an AC / AC that outputs a predetermined DC voltage by connecting to a commercial AC power source A direct current adapter is provided so as to be connectable to the illumination light supply unit.

The AC / DC adapter is connected to the illumination light supply unit via a connection cable, and in the illumination light supply unit, water does not enter inside from the outside when the connection cable is connected. It is good to configure as follows.

[0008]

Embodiments will be described with reference to the drawings. In FIG. 2, an operating portion 2 is connected to the proximal end side of the insertion portion 1 which is covered by a flexible tube. Approximately 3/4 of the lower side of the operation unit 2
The portion is a grip portion 3, and a forceps insertion portion 4 is provided between the grip portion 3 and the insertion portion 1 so as to project obliquely forward.

An operation mechanism section 5 above the grip section 3 of the operation section 2.
Includes a suction operation valve 6 for performing a suction operation through a forceps channel (not shown) inserted into the insertion portion 1,
A bending operation lever 7 for remotely bending a bending portion (not shown) formed at the distal end portion of the insertion portion 1 is arranged on the front surface and the rear surface, and an eyepiece portion 8 is projectingly provided on the upper surface. .

The light guide fiber bundle 9 for illuminating an object has an incident end portion arranged in the operation mechanism portion 5, passes through the insertion portion 1 and the grip portion 3 of the operation portion 2, and the emission end portion. It is arranged at the tip of the insertion portion 1.

Then, the light guide fiber bundle 9
Illumination light supply unit 3 for supplying illumination light to
0 is detachably attached to the side surface portion of the operation mechanism unit 5.

The illumination light supply unit 30 has a built-in light source lamp for emitting the illumination light to be supplied to the light guide fiber bundle 9 and a battery serving as its power source. In the present invention, however, the battery is removed, A connection cable 61 connected to the AC / DC adapter 60 is connected thereto.

FIG. 3 is an enlarged sectional view showing a state where the illumination light supply unit 30 is removed from the operation section 2.
Main body case 11 for covering the operation mechanism section 5 of the operation section 2
Is made of plastic. The bearing cylinder 12 that supports the bending operation lever 7 and the suction operation valve 6 are fitted into through holes formed in the main body case 11 and are watertightly sealed therein. The bearing tube 12 and the base of the suction operation valve 6 are fixed to the frame 13 in the operation section 2.

A lid 15 is fitted into a large side opening formed in the main body case 11, and an O-ring 16 for sealing is attached to the fitting surface to prevent water from entering the inside through a gap. Has become. Although the O-ring 16 is crushed by being attached, a cross section in a natural state before being crushed is shown in the drawing (hereinafter the same).

A support cylinder 17 whose base is fixed to the frame 13 in the operation portion 2 is arranged at the central axis position of the hole formed in the central portion of the lid 15. And the support cylinder 17
A light guide mounting tube 18 screwed to and protrudes outwardly, and an incident end portion of the light guide fiber bundle 9 is screwed and fixed to a central axis position of the light guide mounting tube 18.

On the protruding end side of the light guide mounting cylinder 18,
A cylindrical lens mounting tube 19 in which a concave-convex lens 20 is watertightly joined to the tip portion is capped and screwed and fixed, whereby the concave-convex lens 20 is attached to the incident end surface of the light guide fiber bundle 9. They are positioned in close proximity to each other.

An O-ring receiving frame 22 arranged around the connection between the support cylinder 17 and the light guide mounting cylinder 18 is fitted around a hole in the center of the lid 15 on the outer surface,
The inner surface is fitted with the outer surface of the lens mounting tube 19,
O-rings 24 and 25 for sealing are respectively attached to the fitting portions so that water does not enter the inside through the gap.

In this way, the operation part 2 is constructed in a watertight structure in which water does not enter from the outside in all parts. Of course, the insertion portion 1 is also formed in a watertight structure. Therefore, even if the endoscope is not attached with the illumination light supply unit 30 and is immersed in a disinfecting solution or the like, there is no risk of a water immersion accident.

Further, a connecting cylinder 23 is arranged so as to surround a portion extending from the lens mounting cylinder 19 to the O-ring receiving frame 22.
Has a base portion screwed and fixed to the inner surface of the hole of the lid body 15, a male screw 23a is screwed on the outer peripheral surface of the intermediate portion, and the outer peripheral surface on the front side thereof is formed into a taper surface which becomes gradually thinner. O-ring 2 for sealing is provided in the middle of the taper surface.
6 is mounted.

The illumination light supply unit 30 as a whole is L
It is formed in a V-shaped cylinder, and its body case 31 is made of plastic. The light source lamp 32 is attached to the lamp socket 33 and arranged at the curved portion.

The light source lamp 32 is arranged on the axis of the short tube of the L-shaped tube, and a reflecting mirror 34 for converging the illumination light emitted from the light source lamp 32 on the axis of the short tube is provided.
It is attached to the lamp socket 33 so as to surround the light source lamp 32.

At the rear of the lamp socket 33, a main body case 31 is formed with an opening, and a bottom cover 35 is formed at the opening opening.
Is detachably screwed. Bottom cover 35 and body case 31
An O-ring 36 for sealing is attached to the fitting surface of and so that water does not enter the inside through the gap. A compression coil spring 37 is interposed between the bottom cover 35 and the lamp socket 33 to elastically fix the lamp socket 33 and the reflecting mirror 34.

A connecting tube receiving tube 46 having a tapered opening at the end opening on the short tube side of the main body case 31 that engages with the tapered surface of the connecting tube 23 provided in the operating section 2.
However, it is fixed by tightening the nut 47 from the inside.

Then, the connecting tube receiving tube 46 and the main body case 3
An O-ring 48 for sealing is attached to the mating surface with 1 to prevent water from entering the interior through the gap, and the inner end of the connecting tube receiving tube 46 has a parallel plane shape. Transparent plate 49 is watertightly joined. In this way, the illumination light supply unit 30 has a watertight structure in which water does not enter from the outside in all parts including other parts described later.

On the outer peripheral side of the connection tube receiving tube 46, a tightening ring 50 having a female screw 50a for screwing with the male screw 23a of the connection tube 23 is attached so as not to come out in the axial direction.

Therefore, from the state shown in FIG. 3, the illumination light supply unit 30 is brought closer to the operation portion 2 side to bring the taper surfaces of the connection tube 23 and the connection tube receiving tube 46 into close contact with each other, so that the female of the tightening ring 50 is closed. When the screw 50a is tightened into the male screw 23a of the connection cylinder 23, the illumination light supply unit 30 is connected to the operation unit 2 as shown in FIG.

At this time, since the O-ring 26 mounted on the tapered surface of the connection tube 23 is crushed by the connection tube receiving tube 46, water does not enter the connection portion from the outside. Therefore, even if the illumination light supply unit 30 is immersed in the disinfecting solution or the like while being attached to the operation unit 2, there is no risk of water inundation accident.

When the illumination light supply unit 30 is attached to the operation portion 2 in this way, the illumination light emitted from the light source lamp 32 is reflected by the reflecting mirror 34 and then passes through the transparent plate 49 and the concave-convex lens 20. Then, the light is converged on the incident end surface of the light guide fiber bundle 9 and is incident on the light guide fiber bundle 9.

Since the connecting tube 23 and the connecting tube receiving tube 46 are in close contact with each other with a tapered surface, the illumination light supply unit 3 is provided by tightening the tightening ring 50 tightly on the connecting tube 23.
0 is fixed so as not to move with respect to the operation unit 2.

However, if the tightening of the tightening wheel 50 is slightly loosened, the illumination light supply unit 30 can freely rotate about the optical axis of the illumination light. Therefore,
The illumination light supply unit 30 is set to the most convenient state by adjusting the mounting angle of the illumination light supply unit 30 with respect to the operation portion 2 indicated by θ in FIG. 2 and tightening the tightening ring 50 tightly in that state. can do.

FIG. 1 shows the entire structure of the illumination light supply unit 30 connected to the operation section 2.
Shows the state in which the connection at both ends of the connection cable 61 is released.

The AC / DC adapter 60 is provided with a plug 62 for plugging into a 100 V commercial AC power outlet that is distributed to ordinary households.
The AC voltage of 00 V is converted into a DC voltage of, for example, 3 V, which is suitable for lighting the light source lamp 32, and is output to the contact 64 of the output terminal unit 63.

The connection cable 61 is formed by inserting two electric wires 66 into a flexible tube 65,
Connection connectors 68 and 69 are attached to both ends thereof, respectively.

The connector 68 on the side connected to the AC / DC adapter 60 is provided with two contact pins 71 for connecting the electric wire 66 to the contact 64, and the tightening ring 7
It is connected to the AC / DC adapter 60 by screwing 2 into the output terminal portion 63, and removed by unscrewing the screw.

The connector 69 on the side connected to the illumination light supply unit 30 is inserted into and removed from the battery case 74 in the long cylindrical portion of the illumination light supply unit 30, and is attached to the electrically insulating insertion main body 75 to connect the electric wire 66. The two contact points 76 connected to are in contact with the electrodes 42 and 43 in the main body case 31. The electrodes 42 and 43 are each connected to the light source lamp 32 by a lead wire 44.

A light source lamp 32 is provided in the middle of the wiring.
Although a switch for turning on and off the power supply to the switch is provided, its illustration is omitted. The switch portion is watertightly sealed so that water does not enter inside from the outside.

The lid portion 78 provided at the base end portion of the insertion main body 75 is screwed into the end opening portion of the main body case 31, and an O-ring 79 for sealing is attached to the boundary portion between the both. Further, an O-ring 82 for sealing is also mounted between the connection cylinder 81 connecting the insertion body 75 and the tube 65 of the connection cable 61 and the inner peripheral surface of the lid 78.

In this way, by connecting the AC / DC adapter 60 and the illumination light supply unit 30 with the connection cable 61, the light source lamp 32 is turned on by the DC voltage converted from the commercial AC power supply of 100 V, Illumination light is supplied to the light guide fiber bundle 9.

Although the AC / DC adapter 60 is not watertightly sealed, the connection cable 61 is watertightly sealed by itself, and the illumination light supply unit 30 is watertightly sealed by connecting the connection cable 61. To be done.

[0040]

According to the present invention, since the AC / DC adapter for outputting a predetermined DC voltage by connecting to the commercial AC power source is provided so as to be connectable to the illumination light supply unit, the battery replacement of the illumination light supply unit is possible. Therefore, the endoscopy can be carried out with peace of mind without fear of being interrupted on the way.

When the connection cable for connecting the AC / DC adapter to the illumination light supply unit is connected, the illumination light supply unit is cleaned by arranging it so that water does not enter the inside of the illumination light supply unit. , Can be surely disinfected.

[Brief description of drawings]

FIG. 1 is an enlarged plan sectional view of a state in which an illumination light supply unit is attached to an endoscope operation section according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which an illumination light supply unit is attached to the endoscope operation section according to the embodiment of the present invention.

FIG. 3 is an enlarged plan sectional view showing a state in which the endoscope operation unit and the illumination light supply unit of the embodiment of the present invention are separated.

FIG. 4 is a diagram showing an example of an illumination light supply unit of the present invention and an alternating current /
It is an expanded plane sectional view in the state where the connection of a direct-current adapter was canceled.

[Explanation of symbols]

 2 Operation part 9 Light guide fiber bundle 30 Illumination light supply unit 60 AC / DC adapter 61 Connection cable

Claims (2)

[Claims] 1. An incident end portion of a light guide for illuminating a subject is arranged on an operation portion, and an illumination light supply unit for supplying illumination light to the light guide is detachably attached to the operation portion. In the provided simple endoscope device, an AC / DC adapter that outputs a predetermined DC voltage by connecting to a commercial AC power source is provided so as to be freely connectable to the illumination light supply unit. Mirror device. 2. The AC / DC adapter is connected to the illumination light supply unit via a connection cable, and in the illumination light supply unit, water intrudes into the interior from the outside when the connection cable is connected. The simplified endoscope apparatus according to claim 1, which is configured not to.