JP3495480B2 - Simple endoscope device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination light supply unit having a built-in light source lamp for supplying illumination light to a light guide. The present invention relates to a connected simple endoscope device. 2. Description of the Related Art A so-called simple endoscope apparatus provided with an illuminant for illumination in an endoscope operation section is generally provided with an illumination light supply in which a light source lamp and a dry battery or the like as a power source are incorporated. The unit is detachably connected to the endoscope operation unit. Switching between turning on and off the light source lamp is performed by a manual switch provided in the illumination light supply unit. However, if the light source lamp is turned on and off by a manual switch provided in the illumination light supply unit, the light source lamp can be turned on even when it is not necessary to turn on the light source lamp. The battery may be consumed when the lamp is left lit. Therefore, it is conceivable that the switch is automatically turned off when the illumination light supply unit is removed from the endoscope operation unit. However, even in such a case, the illumination light supply unit is again switched to the endoscope operation unit. Since the light source lamp is turned on when the light source lamp is mounted, it is necessary to manually turn off the switch, and the switch operation is complicated. SUMMARY OF THE INVENTION It is an object of the present invention to provide a simple endoscope apparatus capable of preventing unnecessary power consumption when not in use without requiring an extra switch operation. In order to achieve the above-mentioned object, a simplified endoscope apparatus according to the present invention has a light guide for transmitting illumination light for illuminating a subject. A simplified endoscope device, which is disposed in the endoscope operation unit and in which an illumination light supply unit incorporating a light source lamp for supplying illumination light to the light guide is detachably connected to the endoscope operation unit, A manual operation unit of a switch for turning on and off the light source lamp is provided on the endoscope operation unit side, and when the illumination light supply unit is removed from the endoscope operation unit, a contact of the switch and the manual operation unit Are turned off, and the state is maintained even when the illumination light supply unit is next attached to the endoscope operation section. Embodiments of the present invention will be described with reference to the drawings. FIG. 5 is a rear view of the operation section 2 of the endoscope. The lower end of the endoscope operation section 2 is connected to the base end of the insertion section 1 which is covered by a flexible tube. [0008] A lower portion of the endoscope operating section 2 which is about three-quarters is a grip 2a, and an operating mechanism 5 above the operating section 5 has a curved portion (see FIG. (Not shown), a bending operation lever 7 and the like for remote bending operation are arranged, and an eyepiece 8 is provided to protrude from the upper surface. An illumination light guide fiber bundle 9 for transmitting illumination light for illuminating a subject has an incident end disposed in an operation mechanism section 5, and includes an insertion section 1 and an endoscope operation section 2. After passing through the grip portion 2a, the injection end portion is inserted into the insertion portion 1.
Is located at the tip of the Then, the light guide fiber bundle 9
Illumination light supply unit 3 for supplying illumination light to
Reference numeral 0 is vertically connected to a side surface portion of the operation mechanism unit 5 in a detachable manner. The illumination light supply unit 30 includes a light source lamp 32 for emitting illumination light to be supplied to the light guide fiber bundle 9 and a battery 100 as a power supply for lighting the light source lamp 32. I have. As the battery 100, any battery such as a dry battery or a rechargeable nickel cadmium battery may be used. The battery 100 is replaceable by removing a cap 31 which is detachably attached to the end of the illumination light supply unit 30.
A DC adapter or the like can be connected. FIG. 1 shows a state in which the illumination light supply unit 30 is connected to the endoscope operation unit 2 and the light source lamp 32 is turned on. FIG. 2 shows a state where it has been detached. A socket 34 is disposed at the tip of the main body 33 of the illumination light supply unit 30, and a light source lamp 32 is inserted therein. And the light source lamp 32
A spheroidal mirror 35 arranged so as to surround the light emitting portion is fixed to the main body 33 by a connecting nut 37. A cover glass 38 is joined to the opening of the spheroid mirror 35. The main body 33 is formed of an electric insulating material, and a tubular battery case is formed in the latter half thereof, and the battery 100 is accommodated therein. 39
Is a cylindrical metal cover attached so as to cover the outer surface of the main body 33, and 40 and 41 are electric insulating plates. The positive electrode of the battery 100 is always connected to one electrode of the light source lamp 32 via a conductor 42. On the other hand, the negative electrode of the battery 100 is connected to the other electrode of the light source lamp 32 via a contact 43 attached to the cap 31 and a conducting wire 44 on the main body 33 side. A free contact 45 is inserted and connected. The contact 45 is attached to a front surface of the main body 33 and is disposed in a space surrounded by a switch case 47 fixed to a front side of the main body 33 by a connecting nut 37. In the switch case 47, a first pin 48 for opening and closing the contact 45 is disposed so as to be able to advance and retreat in the axial direction. The first pin 48 is attached by a compression coil spring 49 in a direction to open the contact 45. It is being rushed. A connection nut 50 is provided around the switch case 47 so as to be rotatable around an axis in order to connect and fix the illumination light supply unit 30 to the endoscope operation section 2. A female screw to be screwed with the operation unit 2 side is formed on the inner peripheral surface on the front side. The entrance end of the light guide fiber bundle 9 is arranged on the endoscope operation unit 2 side. When the illumination light supply unit 30 is connected to the endoscope operation unit 2, the light guide fiber bundle 9 is a light source lamp 3 on the incident end face.
2, the illumination light emitted from the light source lamp 32 is incident on the light guide fiber bundle 9. A first pin 48 is provided on the endoscope operating section 2.
A second pin 61 for pushing the contact 45 to close the contact 45 is provided so as to be able to advance and retreat in the axial direction, and an on-switch button 62 for closing the contact 45 to turn on the light source lamp 32;
The two switch operation buttons of the off switch button 63 for opening the contact 45 and extinguishing the light source lamp 32 include:
They are arranged side by side and exposed to the outside. Shafts 64, 65 which are pushed in the axial direction by the switch buttons 62, 63 are integrally connected to the switch buttons 62, 63, respectively. Is being urged towards. Reference numeral 70 denotes a hook rotatably provided about a shaft 71 so that the ON switch button 62 can be stopped in the ON state where the ON switch button 62 is depressed. 64 is urged by an urging spring 73 so as to engage with an engaging hole 72 formed in the hole 64. When the ON switch button 62 is pressed, the second pin 61 is pushed by a tapered surface formed at the tip of the ON switch button 62 and moves to move the first pin 48.
Is pressed to bring the contact 45 into a closed ON state. When the off switch button 63 is pushed in, the hook 70 is pushed by the tip of the shaft 65 connected to the off switch button 63, and rotates against the urging force of the urging spring 73. As a result, the engagement between the hook 70 and the engagement hole 72 is released, and the ON switch button 62 is returned to the original OFF state by the return spring 66. Reference numeral 75 denotes a release pin which is urged outward by a compression coil spring 76 and has a recess 77 formed in a deep portion thereof, through which a hook 70 is movably inserted. A hook 7 is provided at the far end of the release pin 75.
A contact portion 78 that hits 0 is formed. When the illumination light supply unit 30 is attached to the endoscope operation unit 2, the release pin 75 is pushed into the endoscope operation unit 2 by the connection nut 50 as shown in FIG. In this state, the hook 70 rotates in the groove 77 and can be engaged with the engagement hole 72. On the other hand, when the illumination light supply unit 30 is not attached to the endoscope operation section 2, as shown in FIG. 2, the release pin 7 biased by the compression coil spring 76 is used.
The head of the projection 5 slightly protrudes from the surface of the endoscope operation section 2, and the hook 70 is rotated by the contact section 78 against the biasing force of the biasing spring 73, and cannot be engaged with the engagement hole 72. It is in a state of being retracted to the position. By attaching and detaching the illumination light supply unit 30 to and from the endoscope operation unit 2, the release pin 75 and the hook 7
The spring force of the compression coil spring 76 for urging the release pin 75 is set to be sufficiently larger than the spring force of the urging spring 73 for urging the hook 70 so that 0 operates as described above. In the apparatus according to the embodiment configured as described above, when the illumination light supply unit 30 is not connected to the endoscope operation unit 2, as shown in FIG. Is returned to the standby state by the compression coil spring 49.
Is always open and off, and the light source lamp 32 is always off. Also, since the hook 70 is retracted to a position where the hook 70 cannot be engaged with the engagement hole 72 on the endoscope operation section 2 side as described above, even if the ON switch button 62 is pushed in, When the fingertip is released, the state is returned to the OFF state, which is the standby state, by the return spring 66, and the ON state cannot be maintained. Therefore, as shown in FIG. 3, when the connection nut 50 is screwed into the endoscope operation section 2 to connect the illumination light supply unit 30 to the endoscope operation section 2, the release pin 75 is released.
Is pushed in by the connection nut 50 so that the hook 70 can be engaged with the engagement hole 72. However, even in this case, unless the ON switch button 62 is pressed again, the ON switch button 62 remains OFF and the second pin 61 does not enter the state where the first pin 48 is pressed. Reference numeral 45 indicates an open OFF state, and the light source lamp 32 is in an OFF state. As described above, the ON switch button 62 is not locked in the ON state when the illumination light supply unit 30 is detached.
By simply connecting to the endoscope operation unit 2, the switch is always turned off, and the light source lamp 32 is not turned on. Then, as shown in FIG. 1, when the ON switch button 62 is pressed, the second pin 61 and the first pin 4 are pressed.
The contact 45 is closed via 8, the switch is turned on, and the light source lamp 32 is turned on. And hook 7
0 engages with the engagement hole 72, so that the ON switch button 6
The on-state is maintained even if the hand is released from 2. Next, as shown in FIG. 4, when the off switch button 63 is pushed in, the hook 70 is moved by the tip of the shaft 65 connected to the off switch button 63.
Is disengaged from the engagement hole 72, the first pin 48 and the second pin 61 are returned by the urging force of the compression coil spring 49, the contact 45 is opened and the switch is turned off,
The light source lamp 32 turns off. As described above, when the illumination light supply unit 30 is connected to the endoscope operation unit 2, the on / off switch button 62 and the off switch button 63 are operated to turn on / off.
The turning-off operation can be performed any number of times. When the illumination light supply unit 30 is detached from the endoscope operation unit 2, the switch is always turned off, and then the illumination light supply unit 30 is turned off. The switch-off state is always maintained even when it is attached to the device. According to the present invention, the manual operation section of the switch for turning on and off the light source lamp is provided on the endoscope operation section side, and when the illumination light supply unit is removed from the endoscope operation section. The switch contacts and the manual operation unit are both turned off, and when the illumination light supply unit is next attached to the endoscope operation unit, the off state is maintained, so it is not used without any switch operation. It is possible to prevent unnecessary consumption of power at the time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side sectional view of a switch-on state according to an embodiment of the present invention. FIG. 2 is a side sectional view showing a state in which the illumination light supply unit according to the embodiment of the present invention has been removed from the endoscope operation unit. FIG. 3 is a side sectional view of a state immediately after the illumination light supply unit according to the embodiment of the present invention is attached to the endoscope operation unit. FIG. 4 is a side sectional view of a switch-off state according to the embodiment of the present invention. FIG. 5 is a rear view of the simplified endoscope apparatus according to the embodiment of the present invention. [Description of Signs] 2 Endoscope operation unit 30 Illumination light supply unit 32 Light source lamp 45 Contact 62 ON switch button 63 OFF switch button 70 Hook 72 Engagement hole 75 Release pin 100 Battery

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kunitoshi Ikeda 2-36-9 Maenocho, Itabashi-ku, Tokyo Asahi Optical Co., Ltd. (72) Inventor Kuniyoshi Kaneko 2-36, Maenocho, Itabashi-ku, Tokyo 9 Asahi Optical Industry Co., Ltd. (72) Inventor Takisuke Adachi 2-36-9 Maeno-cho, Itabashi-ku, Tokyo Asahi Optical Industry Co., Ltd. (56) References JP-A-7-5376 (JP, A) JP-A-6-335450 (JP, A) JP-A-63-257711 (JP, A) JP-A-8-1446311 (JP, A) Japanese Utility Model Application No. Sho 61-171017 (JP, U) Japanese Utility Model Application No. Sho 56-59005 (JP, U) JP-A-58-173101 (JP, U) JP-A-5-50415 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 1/00-1 / 32 G02B 23/24-23/26

Claims (1)

(57) [Claim 1] An incident end of a light guide for transmitting illumination light for illuminating a subject is arranged in an endoscope operation unit, and supplies illumination light to the light guide. Light source unit having a built-in light source lamp for detachably connected to the endoscope operation unit, the manual operation unit of a switch for turning on and off the light source lamp is referred to as the endoscope. When the illumination light supply unit is detached from the endoscope operation unit, the contact of the switch and the manual operation unit are both turned off. A simplified endoscope apparatus wherein the state is maintained even when attached to an endoscope operation unit.