JPH10295640A - Lighting system for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct an endoscopic inspection without using a light source device for an endoscope by detachably attaching an adapter for connecting a simple light source tool except for a standard light source device in an incident end part of a lighting light guide for the endoscope connected to the light source device. SOLUTION: A lens system 23 is incorporated in a cylindrical mirror frame part 21 in the tip part of a flashlight connecting adapter 20 and the outer diameter of the mirror frame part 21 is set to such a dimension as being fitted to the inside of a connection cylinder 8. A rotary ring 25 is rotatably fitted in the outer circumferential part of the mirror frame part 21 and a fixed ring 24 having a screw part 24a threadly engaged with a screw part 8a in the projection part of the connecting cylinder 8 is connected to the rotary ring 25 by a screw. When a fastening ring 28 is rotated about an axis, the fastening ring 28 is axially moved to a receiver ring 27 and, if the fasting ring 28 is drawn near to an opening part side of the receiver ring 27, the receiver ring 27 is pressurized from the outside so as to fasten it in the diametrical direction and the tip part of a flashlight 200 is fixed in the receiver ring 27.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination device for an endoscope in which illumination light generated by a light source device is transmitted by an illumination light guide.

[0002]

2. Description of the Related Art Illuminating light for illuminating a subject in a body cavity in an endoscope is generally transmitted through a light guide inserted through the endoscope.
It is designed to be connected to a light source device having a built-in light source lamp for emitting illumination light.

[0003] In a general endoscope, the incident end of such a light guide is arranged at a connector portion connected to the tip of a flexible tube extending from an operation section, and is provided with a xenon lamp or a halogen lamp. It is connected to an endoscope-dedicated light source device incorporating a lamp and the like.

[0004] In the case of a simple endoscope called a bedside scope or the like for easy use in a place other than the endoscope room, an incident end of a light guide is arranged in an operation section, A small dedicated light source device is connected to the light source device and can be held by hand with the operation unit.

[0005]

As described above, in any of the conventional endoscope devices, it is necessary to use a light source device prepared exclusively for the endoscope in each case.

Therefore, if the light source device becomes unusable due to a burn out of the lamp of the light source device or some other failure, the endoscope inspection cannot be performed. Further, a light source device for a general endoscope which is not a simple type cannot be used in a place without a commercial power supply, so that a place where an endoscope inspection can be performed is limited.

Accordingly, the present invention provides an illumination device for an endoscope which can perform an endoscopic inspection by using a simple light source device even when the light source device for an endoscope cannot be used. With the goal.

[0008]

In order to achieve the above object, an illumination device for an endoscope according to the present invention comprises an entrance end of an illumination light guide for an endoscope provided so as to be connected to a light source device. An adapter for connecting a simple light source other than the standard light source device connected thereto to the unit is detachably provided.

The standard light source device may be a unit provided with a light source lamp and a battery serving as a power source for the light source lamp. May be.

[0010] The incident end of the illumination light guide may be arranged at a connector portion provided at a distal end of a flexible tube extending from an operation section of the endoscope. The light source may be a flashlight or a light source for a laryngoscope.

Further, the light source may be fixed to the adapter by a fastening piece which is radially fastened from an outer peripheral surface side. In this case, the fastening piece may have a plurality of slits in an axial direction. May be formed of a cylindrical receiving ring into which the light source is inserted and a fastening ring which is screwed to the outer periphery of the receiving ring and comes into contact with the fastening piece with a tapered surface.

The light source may be fixed by engagement of a pin and a hook, and an incident end of the light guide is inserted into the adapter.
The adapter may be fixed to the adapter by a fixing screw.

[0013]

Embodiments of the present invention will be described with reference to the drawings. FIG. 4 shows the operation unit 2 of the simplified endoscope 1 according to the embodiment of the present invention.

Reference numeral 3 denotes an image guide fiber bundle for transmitting an endoscope observation image, the image incidence end face of which is disposed at the tip of an insertion portion (not shown).
An image of the subject is formed by the objective lens.

An image output end face 3a of the image guide fiber bundle 3 is disposed on an eyepiece 4, and an endoscope observation image is enlarged by an eyepiece 4a protruding from an upper end of the operation section 2. To be observed.

Reference numeral 5 denotes a light guide fiber bundle for transmitting illumination light for illuminating a subject, the emission end of which is disposed at the tip of an insertion portion (not shown).
The illumination light is emitted toward the subject.

The incident end face 5a of the light guide fiber bundle 5 is disposed laterally near the upper end of the operation section 2. 6 is a suction operation button. 7 is a forceps stopper attached to the entrance of the forceps channel.

Reference numeral 100 denotes a dedicated light source unit having a built-in light source lamp 101. The light source unit 100 is detachably mounted on a connection tube 8 protruding from a side surface of the operation unit 2. Houses a battery serving as a power supply for the light source lamp 101.

The connecting tube 8 is provided so that the center axis is aligned with the incident end face 5 a of the light guide fiber bundle 5. When the light source unit 100 is connected to the connecting tube 8, the light is emitted from the light source lamp 101. Illumination light
The light converges on the incident end face 5a, is incident on the light guide fiber bundle 5, and is transmitted.

FIG. 1 shows a light source unit 100 from a connecting cylinder 8.
Indicates a state in which it has been removed. Reference numeral 9 denotes an incident lens for adjusting the direction of illumination light incident on the incident end face 5a of the light guide fiber bundle 5.

Reference numeral 20 denotes a flashlight 200
Is connected to the connecting tube 8 at one end thereof, and the flashlight 200 can be attached to and detached from the other end.

A lens system 23 is built in a cylindrical lens frame 21 at the front end of the flashlight connection adapter 20. The outer diameter of the lens frame 21 is a size that fits inside the connection tube 8. Reference numeral 22 denotes an O-ring for sealing a fitting surface with the connection tube 8.

In the middle part of the flashlight connection adapter 20, a rotary ring 25 is rotatably fitted on the outer peripheral part of the lens frame 21. A fixed ring 24 having a screw portion 24 a that is screwed with a screw portion 8 a formed at the protruding end of the connection cylinder 8 is screw-connected to the rotating ring 25.

Reference numeral 29 denotes a slot 1 formed in the connection tube 8.
When the pin 29 is engaged with the slot 10, the lens frame 21 does not rotate with respect to the connection cylinder 8.

The rotating ring 25 and the fixed ring 24 are
Are arranged so that they cannot be moved in the axial direction with respect to. Therefore, the lens frame portion 21 is inserted into the connecting cylinder 8 until the pin 29 engages with the slot 10, and the fixed ring 2
4 is rotated, the screw portion 8a of the connection cylinder 8 and the fixed ring 24 are rotated.
And the screw portion 24a is screwed together, as shown in FIG.
The flashlight connection adapter 20 is fixed to the connection tube 8.

A receiving ring 27 for detachably receiving the tip of a flashlight 200 powered by a built-in battery is fixedly screwed to the other end of the lens frame 21 of the flashlight connection adapter 20.

The receiving ring 27 is formed in a tapered shape in which the outer peripheral surface gradually widens toward the mouth. As shown in FIG. 3, the half of the receiving ring 27 near the opening is, for example, about ten teeth like teeth by a plurality of slits formed in the axial direction at regular intervals in the circumferential direction. Is divided into pieces.

A fastening ring 28 is fitted around the outer periphery of the receiving ring 27 so as to be rotatable around the axis. A part of the outer peripheral surface of the receiving ring 27 and a part of the inner peripheral surface of the , Are formed with screw portions that are screwed together.

Therefore, when the tightening ring 28 is rotated about the axis, the tightening ring 28 moves in the axial direction with respect to the receiving ring 27, and if the tightening ring 28 is moved toward the opening of the receiving ring 27, the receiving ring The distal end of the flashlight 200 can be fixed in the receiving ring 27 as shown in FIGS.

In this way, as shown in FIG.
In a state where the flashlight 200 is connected to the connection tube 8 via the flashlight connection adapter 20, the illumination light emitted from the miniature bulb 201 of the flashlight 200 passes through the lens system 23 and the incident lens 9, and becomes a light guide. The light is converged and incident on the incident end face 5a of the fiber bundle 5.

Therefore, even when the light source lamp 101 of the light source unit 100 is cut off, the light source unit 100 is removed from the connecting tube 8 and the flashlight 200 is attached via the flashlight connection adapter 20 instead. By supplying illumination light to the light guide fiber bundle 5 of the endoscope 1, an endoscope inspection can be performed.

By loosening the fastening ring 28, the flashlight 200 can be removed from the flashlight connection adapter 20, and by loosening the fixed ring 24, the flashlight connection adapter 20 can be removed from the connection tube 8.

FIG. 5 shows a second embodiment of the present invention, in which a light source connection adapter 40 for a laryngoscope can be detachably attached to a connection tube 8 provided in the operation section 2. Things.

In the case of the light source connection adapter 40 for a laryngoscope, only one convex lens 43 is disposed at the distal end of a lens frame 41 inserted into the connection tube 8.
Illumination light radiated from the miniature bulb 401 provided at 00 is transmitted to the convex lens 43 via a connection light guide 50 formed of a short light guide fiber bundle.

The O-ring 42 and the pin 49 are the same as the O-ring 22 and the pin 29 of the first embodiment.
By engaging a pin 49 with a slot 10 formed on the connecting ring 8 and screwing a screw portion 44 a of a fixed ring 44 rotatably provided with respect to the main body 47 with a screw portion 8 a of the connection tube 8. As shown in FIG. 6, the laryngoscope light source connection adapter 40 is connected to the connection tube 8.

The distal end of the connection light guide 50 is screwed and fixed to a screw cylinder 45 for holding and fixing the convex lens 43, and the middle part is a light source connection adapter 4 for a laryngoscope.
It is bent in an L-shape through the inside of the main body 47 and is directed sideways at the hand side.

The incident end 50a of the connection light guide 50
Is attached to the connection base 48 to which the light source for laryngoscope 400 is connected. The connection base 48 has a hook 4
6, the hook 46 is engaged with a pin 402 provided on the light source 400 for the laryngoscope, as shown in FIG. And are connected.

In this manner, by connecting the light source connection adapter 40 for the laryngoscope, to which the light source 400 for the laryngoscope is connected, to the connection tube 8 of the operation unit 2 as shown in FIG.
Illumination light emitted from the miniature bulb 401 of the laryngoscope light source 400 passes through the connection light guide 50, passes through the convex lens 43 and the incident lens 9, and is incident on the incident end face 5 a of the light guide fiber bundle 5.

FIGS. 8 and 9 show a third embodiment of the present invention, in which a general endoscope 1 using an external light source device is used.
The flashlight 20 is connected via the flashlight connection adapter 60.
0 can be used as a light source.

A flexible tube 12 extends from the operation unit 2 of the endoscope 1, and a connector portion 13 for connecting an external light source device (not shown) is connected to a tip of the flexible tube 12. Have been.

The connector portion 13 is provided with a connecting rod 13a which is inserted into a connector socket of the external light source device, and the leading end portion is provided with the incident end face 5a of the light guide fiber bundle 5.

The connecting rod 13a of the connector section 13 is inserted into the flashlight connection adapter 60 from one side, and the tip of the flashlight 200 is inserted from the other side.

Then, as shown in FIG. 9, by making such a connection, the illumination light radiated from the miniature bulb of the flashlight 200 is incident on the incident end face 5a of the light guide fiber bundle 5 to be viewed endlessly. Illumination light is supplied to the mirror 1.

FIGS. 10 and 11 show a fourth embodiment of the present invention. A fixing screw 61 for fixing a connecting rod 13a to a flashlight connection adapter 60 of the third embodiment. Is provided.

By doing so, as shown in FIG. 11, the connecting rod 13a is connected to the flashlight connecting adapter 6.
When it is inserted into the hole 0, it can be fixed firmly by the fixing screw 61. The other parts are the same as in the third embodiment.

[0046]

According to the present invention, by attaching an adapter to the entrance end of the illumination light guide of the endoscope,
Since a simple light source device other than the standard light source device can be connected, even when the light source device for the endoscope cannot be used, the endoscope inspection should be performed using the simple light source device instead. Can be. Therefore, it is possible to cope with a lamp burnout or other failure of the light source device, and to easily perform an endoscope inspection in a place where a commercial power supply cannot be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state where an adapter according to a first embodiment of the present invention is not connected.

FIG. 2 is a cross-sectional view illustrating a state where the adapter according to the first embodiment of the present invention is connected.

FIG. 3 is a side view showing a state in which a flashlight is connected to the adapter according to the first embodiment of the present invention.

FIG. 4 is a front view of an operation section of the endoscope according to the first embodiment of the present invention.

FIG. 5 is a sectional view showing a state where an adapter according to a second embodiment of the present invention is not connected.

FIG. 6 is a sectional view showing a state where an adapter according to a second embodiment of the present invention is connected.

FIG. 7 is a side view showing a state in which a light source for a laryngoscope is connected to an adapter according to a second embodiment of the present invention.

FIG. 8 is an overall view of a state where an adapter according to a third embodiment of the present invention is not connected.

FIG. 9 is an overall view of a state where an adapter according to a third embodiment of the present invention is connected.

FIG. 10 is an overall view of a state in which an adapter according to a fourth embodiment of the present invention is not connected.

FIG. 11 is an overall view of a state where an adapter according to a fourth embodiment of the present invention is connected.

[Explanation of symbols]

 2 Operation unit 5 Light guide fiber bundle 5a Incident end face 8 Connection tube 20 Flashlight connection adapter 40 Light source connection adapter for laryngoscope 60 Flashlight connection adapter 200 Flashlight 400 Light source for laryngoscope

Continued on the front page (72) Inventor Kunitoshi Ikeda 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Gaku Kogyo Co., Ltd. (72) Inventor Hirohisa Ueda 2-36-9 Maenocho, Itabashi-ku, Tokyo Manabu Asahi (72) Inventor Kuniyoshi Kaneko 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Gaku Kogyo Co., Ltd.

Claims (10)

[Claims] 1. A simple light source device other than a standard light source device connected thereto is connected to an incident end of an illumination light guide of an endoscope provided to be connected to the light source device. An illumination device for an endoscope, wherein the adapter is detachably provided. 2. The endoscope illumination device according to claim 1, wherein the standard light source device is a unit including a light source lamp and a battery serving as a power source thereof. 3. The endoscope illumination device according to claim 1, wherein an incident end of the illumination light guide is arranged on an operation section of the endoscope. 4. An illumination light guide according to claim 1, wherein an incident end of said illumination light guide is disposed on a connector provided at a distal end of a flexible tube extending from an operation section of the endoscope. Endoscope lighting device. 5. The method according to claim 1, wherein the light source is a flashlight.
The lighting device for an endoscope according to 2, 3, or 4. 6. The illumination device for an endoscope according to claim 1, wherein the light source is a light source for a laryngoscope. 7. The illuminating device for an endoscope according to claim 1, wherein the light source is fixed to the adapter by a fastening piece that is radially fastened from an outer peripheral surface side. 8. A cylindrical receiving ring in which a plurality of slits are formed in an axial direction and in which the light source is inserted, and the tightening piece is screwed to an outer periphery of the receiving ring to form the tightening piece and a tapered surface. The illumination device for an endoscope according to claim 7, comprising a contact ring that comes into contact with the end ring. 9. The illumination device for an endoscope according to claim 1, wherein the light source is fixed to the adapter by engagement of a pin and a hook. 10. The illuminating device for an endoscope according to claim 1, wherein an incident end of the light guide is inserted into the adapter, and is fixed to the adapter by a fixing screw.