JPH03118027A - Endoscope device - Google Patents

Abstract

PURPOSE:To extend the service life of a light source lamp by constituting the device so that a use state of an endoscope is detected, a detecting signal is inputted to a control means, and a turn-on signal from a turn-on switch for instructing a turn-on start of the light source lamp is inputted. CONSTITUTION:In the beginning, when a turn-on switch 16 is turned on, the other input end of a NOR gate 26 becomes an L level from an H level. In this state, when an operator grips a piezoelectric element 21 of an operating part 18, electromotive force is generated in the piezoelectric element 21 and a current flows into a base of a transistor Q1 through a resistance R3, and the transistor Q1 is turned on. When the transistor Q1 is turned on, one input end of the NOR gate 26 becomes an L level from an H level. The NOR gate 26 sets an output to an H level since two input ends become an L level. A turn-on device 27 receives a signal of an H level and supplies power to a light source lamp 9, and turns it on. When the operator stops temporarily an observation of an endoscope 2, and releases a hand from the operating part 18, in the piezoelectric element 21, generation of electromotive force is suspended, and the transistor Q1 is turned off.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an endoscope device that controls illumination light supplied to an endoscope.

[Problems to be solved by conventional techniques and inventions] In recent years,
Medical endoscopes are widely used to observe and treat affected areas by inserting a long and thin insertion section into the body cavity. A collimation light is provided to illuminate the area.

Various types of light source devices have been proposed. For example, Tokko Sho 6
In JP 1-53050, a light source device has a socket to which a connector of a light guide of an endoscope is connected, and when the connector is removed from the socket, an illumination light dimming device that attenuates the illumination light sent to the socket is disclosed. A light source device with a mechanism is shown. Further, Japanese Patent Publication No. 61-53051 discloses a light source device including a collimation light transmission stop mechanism that stops transmitting the collation light to the socket when the connector is removed.

According to the technique disclosed in Japanese Patent Publication No. 61-53051 mentioned above, when the connector is removed, the collimation light does not enter the eyes of the patient or doctor, thereby preventing any adverse effects on the eyes. However, with this technology, when the connector is removed, no illumination light is emitted to the outside, so if, for example, the light source lamp breaks, it will not be possible to detect this before the endoscopy, which is extremely inconvenient. there were. To solve this problem, Japanese Patent Publication No. 61-53050 proposes to dim the illumination light when the socket is removed.

On the other hand, in the conventional technology described above, when the connector is connected to the light source device, the light source lamp continues to emit light even when no observation or treatment is being performed with the endoscope unless the light source device is powered off. This is one of the causes of shortening the life of the light source lamp.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an endoscope device that can extend the life of a light source lamp.

[Means and effects for solving the problem] The endoscope device of the present invention includes a light source for supplying light to the endoscope, a lighting switch for instructing the start of lighting of the light source, and an endoscope. The device is equipped with a scope use detection means for detecting that the scope is being used, and a control means for controlling the light emitting energy of the light source based on signals from the scope use detection means and the lighting switch.

In the present invention, the use state of the endoscope is detected by the scope use detection means, and a detection signal is inputted to the control means. A lighting signal from a lighting switch instructing to start lighting the light source lamp is input to the control means.

The control means controls the light emission energy of the light source based on the detection signal and the lighting signal.

[Example] Hereinafter, the present invention will be specifically explained with reference to the drawings.

FIGS. 1 to 4 relate to a first embodiment of the present invention.
Figure 1 is a block diagram showing the conceptual configuration of the endoscope device, Figure 2 is a block diagram showing the specific configuration of this embodiment, Figure 3 is a perspective view of the endoscope, and Figure 4 is a block diagram of the endoscope. Inside? ! It is a perspective view of a mirror.

In FIG. 1, an endoscope device 1 includes an endoscope 2 and a light source device 3. As shown in FIG. The endoscope 2 is provided with a sensor 4 that detects whether the endoscope 2 is being used.

The endoscope 2 is detachably connected to a connector receiver 8 of the light source device M3 by a connector 7 provided at the v2 end of the light guide cable 6.

In the light source device M3, a light source lamp 9 for outputting collation light and a condenser 4 lens 11 for condensing the emitted collation light are provided. A lighting means 12 is connected to the light source lamp 9, and power is supplied to the light source lamp 9 by the lighting means 12. A lighting control means 13 as a control means is connected to the lighting means 12, and the lighting control means 13 outputs a control signal for causing the lighting means 12 to turn on, turn off, or dim the light source lamp 9. It has become.

The lighting control means 13 is connected to a scope use detection means 14 and a lighting switch 16, and receives a scope use detection signal from the scope use detection means 14 and a lighting signal from the lighting switch 16, respectively. It has become.

The scope use detection means 14 is connected to the sensor 4.

In the configuration shown in FIG. 1, the lighting switch 16 of the light source device 3
The lighting signal from is input to the lighting control means 13. The scope use detection means 14 detects this using the sensor 4 when the endoscope VT2 is used, and outputs a scope use detection signal to the lighting control means 13. Lighting control means 13
When the lighting signal and the scope use detection signal are inputted, the light source lamp 9 is turned on to the lighting means 12, and when one of the signals is not inputted, a control signal is outputted to turn off or dim the light source lamp 9.

Next, a detailed explanation will be given with reference to FIGS. 2 and 3.

In FIG. 3, the endoscope 2 includes an elongated insertion section 17, a large-diameter operation section 18 connected to the rear of the insertion section 17, and an operation section 1.
The rear end portion of the eyepiece 8 is provided with an eyepiece portion 19 . A sheet-shaped piezoelectric element 21 as the sensor 4 is wound around the operating section 18, and when the operator grasps the operating section 18, the piezoelectric element 2
1 generates an electromotive force. Further, the light guide cable 6 and the sensor cable 22 are extended to the operation section 18 . A sensor connector 23 is provided at the rear end of the sensor cable 22, and is detachably connected to the light source device 3.

Note that the sensor 4 may be detachably attached to the operating section 18 as shown in FIG. 4. The sensor 4 is formed into a ring shape and has a built-in photoreflector, and detects when an eye or a TV camera comes into contact with or approaches the eyepiece 19.

Note that a photoreflector may be provided in the eyepiece 19, or a lock switch may be provided to keep the sensor 4 in an on state at all times.

In FIG. 2, the lighting control means 13 and the scope use detection means 14 are constructed as follows.

The sensor connector 23 is provided on the front panel of the light source device 3.
A connector receiver 24 to which is connected is provided. One terminal of the connector receiver 24 is grounded, and the other terminal is connected to the base of a switching transistor Q1 as the scope use detection means 14 via a resistor R3. The emitter of the transistor Q1 is grounded, +VCC is applied to the collector, and the transistor Q1 is connected to one input terminal of a NOR gate 26 as the lighting control means 13 via a resistor R1. The other input terminal of the NOR gate 26 is connected to one terminal of the lighting switch 16 and a voltage of 10 V via the resistor R2.
CC is connected. The other terminal of the lighting switch 16 is grounded.

The output end of the NOR gate 26 is connected to a lighting device 27 as the lighting means 12. In addition, the lighting device 2
A power supply 28 is connected to the power supply 7, and power is supplied thereto.

Next, the operation in FIGS. 2 and 3 will be explained.

When the lighting switch 16 is first turned on, the other input terminal of the NOR gate 26 changes from the H level to the L level. When the operator grasps the piezoelectric element 21 of the operating section 18, an electromotive force is generated in the piezoelectric element 21, and current flows into the base of the transistor Q1 via the resistor R3, turning on the transistor Q1. When the transistor Q1 is turned on, one input terminal of the NOR gate 26 changes from the H level to the L level. Since the two input terminals of the NOR gate 26 are at L level, the output is at H level. The lighting device 27 is H
Upon receiving the level signal, power is supplied to the light source lamp 9 to light it.

When the practitioner temporarily stops observing the family celebration v12 and releases his/her hand from the operating section 18, the piezoelectric element 21 stops generating electromotive force and the transistor Q1 is turned off. With transistor Q1 turned off, one input terminal of NOR gate 26 becomes (''
level, and the output of the NOR gate 26 becomes L level. Upon receiving the L level signal, the lighting device 27 stops supplying power to the light source lamp 9, and the light source lamp 9 is turned off.

When the operator grasps the operating section 18 to perform observation again, the piezoelectric element 21 generates an electromotive force and the light source lamp 9 is lit again as described above.

To end the inspection, turn off the lighting switch 16. As a result, the other input terminal of the NOR gate 26 becomes H level, and the output terminal becomes L level. Lighting device 27
stops supplying power to the light source lamp 9 upon receiving the L level signal.

In this case, even if the operator grasps the operating section 18, the light source lamp 9 will not light up because the lighting switch 16 is off.

As described above, in this embodiment, the light source lamp 9 is turned on only when the operator grasps the operation part 18, so the lighting time of the light source lamp 9 can be minimized, and the light source The life of the lamp 9 can be extended.

FIG. 5 relates to a second practical example of the present invention and shows a specific configuration of an endoscope device (it is a block diagram).

In this embodiment, a power switching device 31 is provided in place of the NOR gate 26 described in the first embodiment.

, L power switching device 31 is connected to the collector of a transistor Q1 and +VCC via a resistor R1. Further, the power switching device 31 is connected to the power source 28, and uses the power supplied from the power source 28 as a predetermined power to the lighting device 2.
7.

One terminal of the lighting switch 16 is connected to the lighting device 27 .

The other configurations are the same as in the first embodiment.

In this embodiment, when the lighting switch 16 is turned on, the lighting device W
127 sends the power supplied from the power switching device 31 to the light source lamp 9, and lights the light source lamp 9.

When the operator does not grip the operating section 18, the transistor Q1 is turned off and outputs a torque signal to the power switching device 31, as described in the first embodiment.

The power switching device 31 receives the Trubel signal and supplies the lighting device F 27 with power corresponding to the light m which is smaller than the amount of collimation light required for normal observation.

Lighting equipment! 27 outputs this power to the light source lamp 9, and the light source lamp 9 outputs a collimation light with an amount of light smaller than that required for normal observation.

Next, when the operator grasps the operating section 18 for observation, the transistor Q1 is turned on, and a torque signal is input to the power switching device 31. When the power switching device 31 receives the Trubel signal, it supplies the lighting device 27 with power corresponding to the amount of collimation light necessary for normal observation. The lighting device 27 outputs this power to the light source lamp 9, and the light source lamp 9 outputs the collimation light of the photometer necessary for normal observation.

Other operations are similar to those in the first embodiment.

According to this embodiment, since the illumination light is dimmed when the endoscope 2 is not in use, the first light is turned off.
Compared to the embodiment, the time required for the light source lamp 9 to rise from an unused state to a used state can be shortened.

Further, even when the connector 7 and the sensor connector 23 are removed, the dimmed collimation light is output, so it is possible to confirm whether the light source lamp 9 is lit before using the endoscope 2.

Other effects are similar to those of the first embodiment.

FIG. 6 is a block diagram showing a specific configuration of an endoscope apparatus according to a third embodiment of the present invention.

In this embodiment, a lighting confirmation switch 33 is provided at one input end of the NOR gate 26 of the first example.

One terminal of the lighting confirmation switch 33 is connected to the input terminal of the NOR gate 26 of this embodiment, to which the transistor Q1 is connected. The other terminal of the lighting confirmation switch 33 is grounded.

The other configurations are the same as in the first embodiment.

In the first embodiment, the light source lamp 9 cannot be turned on when the connector 7 and the sensor connector 23 of the endoscope 2 are removed from the optical WA device 3 or when the operation part 18 is not gripped. It is not possible to perform inspections of the light source device 3, such as lighting, before use. Therefore, in this embodiment, inspection can be performed by turning on the lighting confirmation switch 33.

That is, when the sensor connector 23 is removed from the light source device 3 and the operating section 18 is not gripped, the transistor Q1 is turned off, and the NOR gate 26 is turned off.
One input terminal of is the trubel. The other input terminal of the NOR gate 26 becomes a trubel when the lighting switch 16 is turned on. Therefore, the output of the NOR gate 26 becomes a torque signal, and the light source lamp 9 does not light up. Then, when the lighting confirmation switch 33 is turned on, one input terminal of the NOR gate 26 changes from the torque level to the level level, the output changes to - level level, and the light source lamp 9 lights up. When the lighting confirmation is completed, turn off the lighting confirmation switch 33 and turn it on again.
One input terminal of the OR gate 26 becomes the trubel, and the light source lamp 9 is turned off.

As described above, in this embodiment, the lighting of the light source lamp 9 can be confirmed regardless of the usage state of the endoscope 2.

Other functions and effects are similar to those of the first embodiment.

[Effects of the Invention] As described above, according to the present invention, the light source lamp is dimmed or turned off when the endoscope is not in use, so that the life of the light source lamp can be extended.

[Brief explanation of drawings]

FIGS. 1 to 4 relate to a first embodiment of the present invention.
Figure 2 is a block diagram showing the conceptual configuration of the endoscope device, Figure 2 is a block diagram showing the specific configuration of this embodiment, Figure 3 is a perspective view of the endoscope, and Figure 4. is a perspective view of another endoscope, No. 5
The figure relates to a second embodiment of the present invention, and is a block diagram showing the specific configuration of the endoscope line 5A, and FIG. 6 relates to the third embodiment of the present invention, and shows a specific configuration of the endoscope device. It is a block diagram. 1... Endoscope device 2... Endoscope 3... Light source device 4... Sensor 9... Light source lamp 12.
...Lighting means 13...Lighting control means 14...Scope use detection means 16...Lighting switch

Claims (1)

[Scope of Claims] A light source for supplying light to an endoscope, a lighting switch for instructing the start of lighting of the light source, and scope use detection means for detecting that the endoscope is being used. An endoscope apparatus comprising: a control means for controlling light emission energy of the light source based on signals from the scope use detection means and a lighting switch.