JP2000102507A - Endoscopic instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscopic instrument which can control generation of rush current without complicated processes when the power source device of the main body and the endoscope part are connected, and which can reduce power consumption of the power source device. SOLUTION: A resistor 114 is connected between a pair of connecting terminals 108A and 108B of the connector part 108 on the endoscope side. A primary power source part is structured to supply electricity to an image processing part and a power source for a lamp by way of a first switch. A secondary power source part is structured to supply electricity to the endoscope part 100 by way of a second switch. A power source part for a detection circuit supplies electricity directly to a first connection detecting circuit 218 and a switch control circuit 222. The switch control circuit 222 controls the on/off of the first switch and the second switch based on the detection signals inputted by the first and second connection detecting circuits 218 and 220.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an endoscope apparatus.

[0002]

2. Description of the Related Art Conventionally, an endoscope apparatus is provided with an endoscope section, a main body light source section, and a peripheral section.
The endoscope unit illuminates the inside of the body cavity with the illumination light supplied from the main body light source device unit, and photographs the inside of the body cavity with an imaging device such as a CCD. An endoscope circuit is provided in the endoscope unit, and the endoscope circuit performs signal processing of an image sensor and the like. The main body light source unit supplies illumination light to the endoscope unit and supplies power to the endoscope circuit. The peripheral device unit includes, for example, a monitor for displaying an image captured by the endoscope unit, a printer for printing the image, and the like. The main body light source unit and the endoscope unit are connected via a connector, and an electric signal such as a video signal is supplied from the endoscope circuit to the main body light source unit, and the main body light source unit to the endoscope circuit. Electric power is supplied. In addition, the main body light source unit and the peripheral unit are connected via a connector, and an electric signal such as a video signal is transmitted and received from the main body light source unit to the peripheral unit.

[0003]

In the endoscope apparatus configured as described above, when the main body light source unit and the endoscope unit are connected via the connector while the main body light source unit is operating, When the connector comes into contact, a transient rush current may flow from the main body light source unit to the endoscope unit. In addition, when the main body light source unit and the peripheral unit are connected via the connector while the main body light source unit is operating, a transient rush current flows from the main body light source unit to the peripheral unit as described above. May flow. Further, when the power of the peripheral device is turned on before the power of the main light source device in a state where the main light source device and the peripheral device are connected via the connector, the peripheral device may be connected to the main light source device. There is a possibility that a transient rush current flows to the part. Therefore, in order to prevent such a transient inrush current from occurring, it is necessary to consider the connection state of each part and the order of powering on each part, and there is a problem that the power-on operation is complicated and troublesome. Was. In particular, when replacing the endoscope unit and connecting it to the main body light source unit, the power supply of the main body light source unit must be turned off and turned on in a predetermined order. There is a disadvantage that the replacement work takes time. In order to solve such a problem, with the power of the main body light source unit turned on,
There has been proposed a technology capable of connecting and disconnecting an endoscope unit and a main body light source device unit. In this technique, a connector that mechanically operates when the connector is connected to a connector that connects the endoscope unit and the main body light source device unit is provided. The presence or absence of power supply to the endoscope unit is controlled. However, in the above technique, even when the endoscope unit is not connected to the main body light source unit, the power of the main body light source unit is turned on, which is not preferable in terms of power consumption. The present invention has been devised in view of the above circumstances, and an object of the present invention is to suppress the occurrence of inrush current without performing complicated work when connecting the main body power supply unit and the endoscope unit, An object of the present invention is to provide an endoscope apparatus capable of reducing power consumption of a main body power supply unit.

[0004]

In order to achieve the above object, the present invention comprises a main body light source unit and an endoscope unit, wherein the main body light source unit includes a main body power supply unit, a first power supply unit, The endoscope unit has an endoscope circuit and a second connector connected to the endoscope circuit, and the main body power supply unit supplies power to the main body light source unit itself. The first power supply means is configured to generate power to be supplied to the endoscope circuit, and the endoscope circuit is configured to operate by power supplied from the first power supply means. An endoscope apparatus wherein the first and second connectors are configured to enable electrical connection and disconnection, wherein the main body light source unit has a first connection detection unit and a power control unit; The first connection detecting means is provided between the first and second connectors. The power supply control unit is configured to detect presence / absence of an electrical connection and generate a first connection detection signal corresponding to the presence / absence of the connection. The power supply to the light source device unit and the power supply to the endoscope circuit by the first power supply unit are controlled. Further, according to the present invention, the supply of electric power from the first power supply unit to the endoscope circuit and the transmission and reception of electric signals between the main body light source unit and the endoscope circuit are performed through the first and second connectors. Characterized in that it is configured to perform Also, in the present invention, the first connector has a pair of first detection terminals, and the second connector is electrically connected to the first detection terminal when the second connector is connected to the first connector. It has a pair of second detection terminals to be connected, a conduction means capable of conducting current is connected between the second detection terminals, and the first connection detection means applies a predetermined current between the first detection terminals. And detecting the presence or absence of a current flowing between the first detection terminals. The detection of the presence or absence of the electrical connection between the first and second connectors by the first connection detection unit is performed by the first connection detection unit. The detection is performed based on the presence or absence of a current flowing between the detection terminals. Further, the present invention is characterized in that the conduction means is a resistor. Further, the invention is characterized in that the first connection detecting means has a power supply means for a detection circuit, and the power supply means for the detection circuit constitutes a current source connected between the first detection terminals. I do. Also, in the present invention, the first connection detection means has a connection detection circuit, and the connection detection circuit has a galvanometer serially connected between the second detection terminal and the detection circuit power supply means. And detecting the presence or absence of a current flowing between the second detection terminals based on the operation of the galvanometer. Also, in the present invention, the first connection detection means has a connection detection circuit, and the connection detection circuit has a relay switch connected in series between the first detection terminal and the detection circuit power supply means. And it is characterized by detecting the presence or absence of a current flowing between the first detection terminals based on an open / close signal of the relay switch. The present invention further includes a peripheral device unit, wherein the main body light source device unit includes a second power supply unit, a third connector,
A second connection detection unit, wherein the peripheral unit has a fourth connector, and the second power supply unit is configured to generate electric power to be supplied to the peripheral unit. Is configured to operate with power supplied from the second power supply means, and the third and fourth connectors are configured to enable electrical connection and disconnection,
The second connection detecting means detects the presence or absence of an electrical connection between the third and fourth connectors, and a second corresponding to the presence or absence of the connection.
A power supply control unit configured to generate a connection detection signal, wherein the power control unit is configured to control power supply to the peripheral device unit by the second power supply unit based on the second connection detection signal. Features. Further, the invention is characterized in that transmission and reception of electric signals between the main body light source unit and the peripheral device are performed through the third and fourth connectors. Also, in the present invention, the third connector has a pair of third detection terminals, and the fourth connector is electrically connected to the third detection terminals when the fourth connector is connected to the third connector. There is a pair of fourth detection terminals to be connected, and a conduction means capable of conducting current is connected between the fourth detection terminals, and the third connection detection means applies a predetermined current between the third detection terminals. And detecting the presence or absence of a current flowing between the third detection terminals. The detection of the presence or absence of the electrical connection between the third and fourth connectors by the second connection detecting means is performed by the third connection terminal. The detection is performed based on the presence or absence of a current flowing between the detection terminals. 11. The endoscope apparatus according to claim 10, wherein the conduction unit is a load to which a video signal included in an electric signal input from the main body light source unit is supplied. Further, the present invention is characterized in that the conduction means is a resistor. Further, the present invention is characterized in that the second connection detecting means has a power supply means for a detection circuit, and the power supply means for the detection circuit constitutes a current source connected between the third detection terminals. I do. Also, in the present invention, the second connection detection means has a connection detection circuit, and the connection detection circuit has a galvanometer serially connected between the second detection terminal and the detection circuit power supply means. And it is comprised so that presence or absence of the electric current which flows between the said 2nd detection terminals may be detected based on the operation | movement of the said galvanometer. Also, in the present invention, the second connection detection means has a connection detection circuit, and the connection detection circuit has a relay switch serially connected between the third detection terminal and the detection circuit power supply means. Then, it is configured to detect the presence or absence of a current flowing between the third detection terminals based on the open / close signal of the relay switch. Further, according to the present invention, the power supply control means detects that there is a connection between the first and second connectors by the first connection detection means,
When the connection between the third and fourth connectors is detected to be connected by the second connection detecting means, the power supply to the main body light source unit by the main body power supply means and the power supply by the first power supply means The power supply to the endoscope circuit and the power supply to the peripheral device unit by the second power supply unit are performed in a predetermined order. Further, according to the present invention, there are a plurality of the peripheral device units,
The power supply control unit is configured to supply power from the second power supply unit to each of the peripheral device units in units of the peripheral device unit, and the power supply control unit is configured to control the first and second power supply units by the first connection detection unit. When the connection between the two connectors is detected as being present, and when the connection between the third and fourth connectors is detected as being connected by all of the second connection detecting means, the main body light source by the main body power supply means The power supply to the device unit, the power supply to the endoscope circuit by the first power supply unit, and the power supply to the peripheral units by the second power supply unit are performed in a predetermined order. Further, the present invention further includes a protection detection adapter configured to enable electrical connection and disconnection with the third connector, wherein the protection detection adapter is connected to the third connector when the protection detection adapter is connected to the third connector. The present invention is characterized in that a conduction means is connected between the second detection terminals of the connector. Also, the present invention
The conduction means is a resistor. Also,
In the present invention, the main body light source device unit includes a lamp power supply unit that supplies power to a lamp that supplies light to the endoscope unit,
The lamp power supply unit is configured to operate by receiving power supply from the first power supply unit.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the endoscope apparatus according to the present invention will be described. FIG. 1 is a block diagram showing a configuration of an endoscope apparatus according to an embodiment of the present invention, FIG. 2 is an external view showing an entire configuration of the endoscope apparatus, and FIG. 3 is a circuit diagram of a first connection detection circuit and its periphery. 4, FIG. 4 is a circuit diagram of a second connection detection circuit and its peripherals, FIG. 5 is a circuit diagram showing a modification of the first and second connection detection circuits, FIG. 6 is an operation flowchart for explaining a control operation at the time of power-on, FIG. 7 is a circuit diagram of the protection detection adapter showing a state of being connected to the first connection detection circuit.

First, the configuration of the endoscope apparatus will be described with reference to FIGS. The endoscope device 1000 includes an endoscope unit 100, a main body light source device unit 200, and a peripheral device unit 300. As shown in FIG. 2, the endoscope device 100 includes:
An operating unit 102 operated by an operator, a flexible tube 104 protruding from one end in the extending direction of the operating unit 102 and inserted into a patient's body cavity, and protruding from another end in the extending direction of the operating unit 102. Light guide cable 106 and an endoscope side connector section 108 (corresponding to a second connector in the claims) provided at an end of the light guide cable 106 and connected to the main body light source device section 200. .

[0007] As shown in FIG. 1, a CCD 110 is provided at the distal end of a flexible tube 104, and an endoscope-side connector 1 is provided.
08 is provided with an endoscope circuit 112 for driving the CCD 110 and processing a video signal output from the CCD 110. The endoscope section side connector section 108 is connected to an endoscope section connection connector section 204 (corresponding to a first connector in the claims) provided on the front panel 202 of the main body light source device section 200. The endoscope circuit 112
Is input to the main body light source unit 200 and the secondary power supply unit 212 of the main body light source unit 200
Has an electrical connector unit for inputting power supplied from the endoscope to the endoscope circuit 112. Further, the endoscope section side connector section 108 is connected to the endoscope section connection connector section 204 provided on the front panel 202 of the main body light source apparatus section 200, and is operated by the light of the main body light source apparatus section 200. The generated illumination light is input to the light guide cable 106.
To the optical connector. In addition, FIG.
As shown in FIG. 5, between the pair of connection terminals 108A and 108B (corresponding to a second detection terminal in the claims) of the endoscope section side connector section 108, the endoscope of the endoscope section side connector section 108 is provided. A resistor 114 that constitutes a conduction unit for detecting the presence or absence of connection to the connector unit 204 is connected. The operation section 102 is provided with water or air through the flexible tube 10.
Although a water supply port, a suction port, a forceps port for inserting a biopsy forceps, and the like leading to the distal end portion of No. 4 are provided, detailed descriptions thereof are omitted because they are not directly related to the present invention.

The main light source unit 200 includes an image processing unit 20.
6. Power supply transformer 208, primary power supply 210 (corresponding to main power supply means in the claims), secondary power supply 212
(Corresponding to the first power supply unit in the claims), the power supply unit for the detection circuit 214 (corresponding to the power supply unit for the detection circuit in the claims), and the lamp power supply unit 216 (corresponding to the lamp power supply unit in the claims) ), A first connection detection circuit 218 (corresponding to the first connection detection means in the claims), a second connection detection circuit 220 (corresponding to the second connection detection means in the claims),
Switch control means 222, first switch 224, second switch 226, third switch 228, connector portion 230 for peripheral device connection (corresponding to third connector in claims), power supply outlets 232, 234, The switch 236 includes a lamp (not shown).

The image processing unit 206 samples a video signal input from the endoscope unit 100 via the endoscope unit side connector unit 108 and the endoscope unit connection connector unit 204. H) 206A, an analog / digital converter (A / D) 206B for converting the video signal sampled by the sample and hold circuit 206A into a digital signal for each of R, G, B, R, G, B converted to a digital signal Memory 2 for temporarily storing digital signals
06C, 206D, 206E, each memory 206C, 20
A digital / analog converter (D / A) 206F for converting the digital signals read from the 6D and 206E into analog video signals is provided. The video signal output from the digital / analog converter 206F is connected to the connection detection circuit 220, the peripheral device connection connector 230 of the main body light source device 200 (corresponding to the third connector in the claims), and the peripheral device 300. Peripheral device side connector section 30
3 (corresponding to a fourth connector in the claims) to be input to the monitor 302 and the printer 304 of the peripheral device unit 300. Although not shown in FIG. 1, the peripheral device connection connector 230 and the peripheral device connector 303 are connected to the monitor 302 and the printer 304.
Are provided separately for each of the above.

The power supply transformer 208 has an insertion plug 238 connected to its primary side connected to an AC power input outlet 4.
00 and is configured to receive an AC commercial power supply. On the secondary side of the power supply transformer 208, a primary power supply 210, a secondary power supply 212, and a power supply 21 for a detection circuit are provided.
Fourth, the third switch 228 is connected. The secondary power supply unit 212 supplies power to the endoscope unit 100 inserted into the body cavity of the patient.
08, primary power supply section 210, detection circuit power supply section 2
14. The third switch 228 is configured to be electrically insulated.

The primary power supply section 210 is configured to supply power to each section 206 A to 206 F of the image processing section 206 and the lamp power supply section 216 via a first switch 224. The secondary power supply unit 212 connects the endoscope unit 100 with the second
It is configured to supply power via the switch 226. The detection circuit power supply unit 214 includes a first connection detection circuit 218, a second connection detection circuit 220, and a switch control circuit 2.
It is configured to supply power directly to the power supply 22 without passing through a switch. That is, the power supply unit 214 for the detection circuit
Regardless of whether the main switch 236 described later is turned on or off, the plug 238 is connected to the AC power input outlet 400.
Is connected to the first connection detection circuit 21
8. Second connection detection circuit 220, switch control circuit 222
It is configured to supply to. Third switch 228
Is provided between the secondary side of the power supply transformer 208 and power supply outlets 232 and 234 that supply power to the monitor 302 and the printer 304, respectively.
In addition, the power supply transformer 208 constitutes a second power supply in the claims. Power supply outlet 23
2, 234, the plug 306 of the monitor 302 and the plug 308 of the printer 304 are respectively inserted. Then, the first switch 224 and the second switch 224
The switch 226 and the third switch 228 are configured to be turned on and off under the control of the switch control circuit 222, and the first switch 224, the second switch 226,
The third switch 228 and the switch control circuit 222 constitute a power supply control unit described in the claims.

The lamp power supply section 216 is configured to drive a lamp (not shown), and the illumination light of the lamp is supplied to the inside through the endoscope section connector section 204 and the endoscope section connector section 108. It is supplied to the endoscope unit 100. The main switch 236 is connected to the power transformer 20.
8 primary power supply 210 and secondary power supply 21
2 is provided so as to be turned on / off by manual operation.

As shown in FIG. 3, the first connection detecting circuit 218 includes a current source 218A, a galvanometer 218B connected in series to a signal line of the current source 218A, and a signal line of the current source 218A. It comprises a pair of connection terminals 204A and 204B (corresponding to a first detection terminal in the claims) of the endoscope connection connector 204. Current source 218A
Is configured to always output a current by the power supplied from the detection circuit power supply unit 214. Galvanometer 2
18B is configured to detect that a current has flowed through the signal line, and to transmit a detection signal indicating that to the switch control circuit 222.

On the other hand, the connector section 108 of the endoscope section 100 of the endoscope section 100 has the pair of connection terminals 204A, 204
B are provided with a pair of connection terminals 108A and 108B (corresponding to a second detection terminal in the claims),
A resistor 114 provided in the endoscope circuit 112 is connected between the pair of connection terminals 108A and 108B. Therefore, when the endoscope side connector section 108 is connected to the endoscope section connection connector section 204, the current from the current source 218A is applied to the connection terminals 204A and 108A and the resistor 11
4. The current flows through a closed circuit of the connection terminals 108B and 204B, and the galvanometer 218B that detects the current inputs a detection signal to the switch control circuit 222.

On the other hand, as shown in FIG. 4, the second connection detection circuit 220 is connected to a current source 220A, a galvanometer 220B connected in series to a signal line of the current source 220A, and a signal line of the current source 220A. Peripheral device connector 230
, And a pair of connection terminals 230A and 230B. The current source 220 </ b> A is configured to always output a current using power supplied from the detection circuit power supply unit 214. The galvanometer 220B detects that a current has flowed through the signal line, and outputs a detection signal to that effect to the switch control circuit 2B.
22.

On the other hand, the peripheral device side connector portion 303 of the peripheral device portion 300 has the pair of connection terminals 230A,
30B is provided with a pair of connection terminals 303A and 303B, and the pair of connection terminals 303A and 303B are provided.
B is connected to a load 302A. Here, the connection terminals 230A and 230B and the connection terminals 303A and 303B are for transmitting a video signal, and the load 302A
Corresponds to a circuit portion of the monitor 302 or the printer 304 operated by the video signal. Therefore, when the peripheral device section connector section 303 is connected to the peripheral device section connector section 230, the current from the current source 220A is applied to the connection terminals 230A and 303A, the load 302A,
The current flows through a closed circuit of the connection terminals 303B and 230B, and the galvanometer 220B that detects the current inputs a detection signal to the switch control circuit 222.

The second connection detection circuit 220 is provided corresponding to the monitor 302 and the printer 304 of the peripheral device unit 300, respectively, and determines whether or not the monitor 302 and the main body light source device unit 200 are connected. Although the presence / absence of connection with the main body light source unit 200 is separately detected, only one second connection detection circuit 220 will be described below for simplification of description. Further, in the above-described example, the presence or absence of the current flowing to the load 302A of the peripheral device unit 300 is detected on the signal line through which the video signal flows, but another signal line is provided as in FIG. Needless to say, it may be configured to detect the current flowing through the resistor.

The switch control circuit 222 includes a first switch 224, a second switch 226, and a third switch 224 based on detection signals input from the first and second connection detection circuits 218 and 220.
The switch 228 is configured to control on / off.

FIG. 5 is a circuit diagram showing a modification of the first connection detection circuit 218, which is configured using a relay switch 221 instead of the galvanometer. That is, the coil 221A of the relay switch 221 is connected in series to the signal line of the current source 218A, and the contact 221B is turned on / off when a current flows through the coil 221A. Therefore, the open / close signal appearing at the contact 221B may be used as the detection signal. Of course, a circuit configuration similar to that of FIG. 5 can be used as the second connection detection circuit 220.

Next, the operation when the power is turned on will be described with reference to the flowchart of FIG. First, in FIG. 1, the plug 238 is connected to an AC power input outlet 400.
, And the plug 306 of the monitor 302 and the plug 308 of the printer 304 are connected to power supply outlets 232 and 234, respectively. Then, the first switch 224, the second switch 226, the third switch
The switch 228 is assumed to be off. First, the main switch 236 is turned on (S10). In this state, the switch control circuit 222 includes the first switch 224,
The second switch 226 and the third switch 228 are all kept off (S12).

Next, the switch control circuit 222
Peripheral device side connector portion 303 of peripheral device portion 300 based on the presence or absence of the input of the detection signal from connection detection circuit 220
Is a connector 2 for connecting peripheral devices of the main body light source device 200
30 is determined, and the endoscope side connector section 108 of the endoscope section 100 is connected to the main body light source device section 200 based on the presence or absence of the input of the detection signal from the first connection detection circuit 218. It is determined whether or not it is connected to the endoscope unit connector 204 (S14, S16).

If either one of steps S14 and S16 is negative ("N"), the process proceeds to step S12 and the first
Switch 224, second switch 226, third switch 2
28, the main light source unit 200 itself,
The power supply to the endoscope unit 100 and the peripheral device unit 300 is not performed. On the other hand, if both steps S14 and S16 are affirmative (“Y”), the second switch 226 is turned on to supply the power of the secondary power supply unit 212 to the endoscope unit 100 (S1).
8). Thus, the endoscope circuit 112 starts operating.
Then, the first switch 224 is turned on and the primary power supply unit 21 is turned on.
0 power and the lamp power supply unit 2
16 (S20). As a result, the image processing unit 206 of the main light source device unit 200 starts operating, and
The lamp power supply unit 216 turns on the lamp and gives illumination light to the endoscope unit 100.

Next, the third switch 228 is turned on to change the voltage on the secondary side of the power transformer 208 via the power supply outlets 232 and 234 to the monitor 302 and the printer 3.
04 (S22). By the above operation, the endoscope unit 100 and the light source main unit 200 itself (the lamp power supply unit 2)
16 is supplied to the peripheral device unit 300 sequentially. Therefore, power is supplied after the connection between the light source main unit 200, the endoscope unit 100, and the peripheral device unit 300 is confirmed. Therefore, unlike the related art, the endoscope unit 100, the light source main unit unit 200, peripheral device section 300
Rush current can be reliably prevented from flowing in. Further, the power supply to the light source main unit 200 is performed by the peripheral unit 30.
Since the power supply is performed earlier than the power supply to 0, no rush current flows into the light source main unit 200 in a state where the power is not turned on from the peripheral unit 300 which has been turned on first. The order of power supply is as follows: the endoscope unit 100, whose operation is to be stabilized early, is first, then the light source main unit 200 itself (including the lamp power supply unit 216), and the peripheral unit 300. The present invention is not limited to the above-described example as long as the occurrence does not occur.

When the power is supplied to each unit after step S22 is completed, the connection detection circuit 21
When the disconnection is detected by the switches 8 and 220, the switch control circuit 222 turns off the first to third switches to stop the power supply. Therefore,
When the endoscope unit 100 is replaced, the first to third switches are turned off once the connection of the endoscope unit 100 is released by the connection detection circuit 218, and the supply of power is stopped. When the connection of the endoscope unit 100 is detected by the connection detection circuit 218, power is supplied in the same order as shown in FIG. For this reason, the endoscope unit 10
When exchanging 0, it is not necessary to operate the power on / off operation each time. Further, since power is not supplied to the lamp power supply unit 216 while the endoscope unit 100 is not connected, no noise is generated from the lamp power supply unit 216 and the influence of noise on the periphery of the endoscope apparatus 1000 is suppressed. There are advantages that can be. Further, since the lamp power supply unit 216 is not operated, there is also an effect of saving power.

In the above-described configuration, the power is simultaneously supplied to the monitor 302 and the printer 304 by one third switch 228. However, by providing separate switches for the monitor 302 and the printer 304, respectively. Of course, the power supply may be controlled at an arbitrary timing. For example,
Power may be supplied at a timing before or after the supply of power to the endoscope unit 100 and the light source main unit 200 itself (including the lamp power supply unit 216).

Further, in the above-described configuration, even when the endoscope unit 100 is connected to the main body light source unit 200, one of the monitor 302 and the printer 304 is connected to the main body light source unit 200. If not, the endoscope device 1
000 operation is disabled. Therefore, the monitor 302
Alternatively, one of the printers 304 is the main body light source unit 2
This is inconvenient when the user wants to use the endoscope apparatus 1000 in a state where the endoscope apparatus 1000 is not connected to the terminal 00. In order to solve such a problem, a protection detection adapter as shown in FIG. 7 may be used. That is, the adapter 500 is connected to the main body light source device unit 2.
00 is provided so as to be connectable to the peripheral device connection connector 230, and has a pair of connection terminals 502A and 502B connected to the pair of connection terminals 230A and 230B, and a resistor 504 is provided between the connection terminals 502A and 502B. Is connected. Such an adapter 500 is connected to the monitor 30, for example.
2 or the printer light source unit 20 instead of the printer 304
0, the current from the current source 220A is connected to the connection terminals 230A, 5A.
The flow passes through a closed path of the resistor 02A, the resistor 504, and the connection terminals 502B and 230B, and the detector 220B operates to input a detection signal to the switch control circuit 222. For this reason, the operation shown in FIG. 6 is performed normally, power is supplied, and the endoscope apparatus 1000 can be used. If such an adapter 500 is connected to the peripheral device connecting connector 230, the connection terminals 230A and 230B of the peripheral device connecting connector 230 do not become open, and the main body light source device is not affected by external noise. There is also an advantage that the internal circuit of the unit 200 can be protected.

[0027]

As is clear from the above description, the present invention
A main body light source unit, an endoscope unit, the main body light source unit includes a main body power supply unit, a first power supply unit, and a first connector; and the endoscope unit includes an endoscope circuit and an endoscope circuit. A main body power supply unit configured to supply power to the main body light source unit itself; and the first power supply unit configured to supply power to the endoscope circuit. And the endoscope circuit is configured to operate with power supplied from the first power supply means, and the first and second connectors are capable of electrical connection and disconnection. In the endoscope device configured as described above, the main body light source device unit has a first connection detection unit and a power control unit, and the first connection detection unit is an electrical connection between the first and second connectors. First connection detection corresponding to the presence or absence of connection Configured to generate items,
The power supply control unit is configured to control supply of power to the main body light source unit by the main body power supply unit and supply of power to the endoscope circuit by the first power supply unit based on the first connection detection signal. did. Therefore, only when the second connector of the endoscope section is electrically connected to the first connector of the main body light source section, power supply to the main body light source section itself and power supply to the endoscope circuit are performed. Therefore, occurrence of a transient rush current from the main body light source unit to the endoscope circuit is reliably prevented, and power consumption of the main body power supply unit can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an endoscope apparatus according to the present invention.

FIG. 2 is an external view showing the entire configuration of the embodiment.

FIG. 3 is a circuit diagram of a first connection detection circuit and its periphery.

FIG. 4 is a circuit diagram of a second connection detection circuit and its periphery.

FIG. 5 is a circuit diagram showing a modification of the first and second connection detection circuits.

FIG. 6 is an operation flowchart illustrating a control operation when power is turned on.

FIG. 7 is a circuit diagram of the protection detection adapter showing a state connected to the first connection detection circuit.

[Explanation of symbols]

 REFERENCE SIGNS LIST 100 Endoscope section 108 Endoscope section side connector section (first connector) 200 Main body light source section 204 Endoscope section connection connector section (second connector) 210 Primary power supply section (main body power supply means) 212 Secondary Power supply unit (first power supply unit) 214 Power supply unit for detection circuit (power supply unit for detection circuit) 216 Lamp power supply unit (lamp power supply unit) 218 First connection detection circuit (first connection detection unit) 220 Second connection detection circuit ( Second connection detecting means) 222 Switch control circuit (switch control means) 224 First switch 226 Second switch 228 Third switch 230 Peripheral device part connector (third connector) 300 Peripheral device part 303 Peripheral device part side connector Part (4th connector)

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H040 BA00 CA04 CA06 CA08 DA03 DA22 GA02 4C061 AA00 BB00 CC06 DD03 FF07 GG01 HH60 JJ11 JJ17

Claims (20)

[Claims] 1. A main body light source device unit and an endoscope unit, wherein the main body light source device unit has a main body power supply unit, a first power supply unit, and a first connector, and the endoscope unit has an endoscope. A mirror circuit and a second connector connected to the endoscope circuit, wherein the main body power supply means is configured to supply power to the main body light source device itself, and the first power supply means is provided with the endoscope circuit. Wherein the endoscope circuit is configured to operate with power supplied from the first power supply means, and wherein the first and second connectors are electrically connected and connected. In the endoscope device configured to be capable of being released, the main body light source device unit has a first connection detection unit and a power control unit, and the first connection detection unit is between the first and second connectors. Detects the presence or absence of an electrical connection between The first to
The power supply control unit is configured to generate a connection detection signal, and the power supply control unit supplies power to the main body light source device unit by the main body power supply unit and the endoscope by the first power supply unit based on the first connection detection signal. An endoscope apparatus configured to control supply of power to a circuit. 2. The power supply from the first power supply unit to the endoscope circuit and the transmission and reception of an electric signal between the main body light source unit and the endoscope circuit via the first and second connectors. The endoscope apparatus according to claim 1, wherein the endoscope apparatus is configured to perform the operation. 3. The first connector has a pair of first detection terminals, and the second connector is connected to the first connector by the first connector.
A second detection terminal that is electrically connected to the first detection terminal when connected to the connector; a conduction unit that can conduct current is connected between the second detection terminals; The first connection detection means is configured to apply a predetermined current between the first detection terminals and detect the presence or absence of a current flowing between the first detection terminals, and the first and second connection detection means detect the presence or absence of the current. The endoscope apparatus according to claim 1, wherein the detection of the presence or absence of the electrical connection between the connectors is performed based on the presence or absence of a current flowing between the first detection terminals. 4. The endoscope apparatus according to claim 3, wherein said conduction means is a resistor. 5. The method according to claim 1, wherein the first connection detection means has a power supply means for a detection circuit, and the power supply means for the detection circuit constitutes a current source connected between the first detection terminals. The endoscope device according to claim 3. 6. The first connection detection means has a connection detection circuit, and the connection detection circuit has a galvanometer serially connected between the second detection terminal and the detection circuit power supply means. The endoscope apparatus according to claim 5, wherein the endoscope apparatus is configured to detect the presence or absence of a current flowing between the second detection terminals based on an operation of the galvanometer. 7. The first connection detection means has a connection detection circuit, and the connection detection circuit has a relay switch connected in series between the first detection terminal and the detection circuit power supply means. The endoscope apparatus according to claim 5, wherein the endoscope apparatus is configured to detect the presence or absence of a current flowing between the first detection terminals based on an open / close signal of the relay switch. 8. A peripheral device unit, wherein the main body light source device unit has a second power supply unit, a third connector, and a second connection detecting unit, and the peripheral device unit has a fourth connector. , The second power supply means is configured to generate electric power to be supplied to the peripheral device unit, and the peripheral device unit is configured to
The third and fourth connectors are configured to operate by electric power supplied from a power supply unit, and configured to enable electrical connection and disconnection, and the second connection detection unit includes the third and fourth connectors. The power supply control means is configured to detect the presence or absence of an electrical connection between the fourth connectors and generate a second connection detection signal corresponding to the presence or absence of the connection.
The endoscope apparatus according to any one of claims 1 to 7, wherein the endoscope apparatus is configured to control supply of power to the peripheral device unit by the second power supply unit based on a connection detection signal. . 9. The endoscope according to claim 8, wherein transmission and reception of an electric signal between the main body light source unit and the peripheral device are performed through the third and fourth connectors. apparatus. 10. The third connector has a pair of third detection terminals, and the fourth connector is electrically connected to the third detection terminal when the fourth connector is connected to the third connector. A pair of fourth detection terminals, wherein a conduction means capable of conducting current is connected between the fourth detection terminals, and the third connection detection means applies a predetermined current between the third detection terminals and Detecting the presence or absence of a current flowing between the third detection terminals, and detecting the presence or absence of the electrical connection between the third and fourth connectors by the second connection detection means. The endoscope apparatus according to claim 8, wherein the detection is performed based on the presence or absence of a current flowing between the terminals. 11. The endoscope apparatus according to claim 10, wherein the conduction unit is a load to which a video signal included in an electric signal input from the main body light source unit is supplied. 12. The endoscope apparatus according to claim 10, wherein said conduction means is a resistor. 13. The method according to claim 12, wherein the second connection detecting means has a power supply means for a detection circuit, and the power supply means for the detection circuit constitutes a current source connected between the third detection terminals. The endoscope device according to claim 10, 11 or 13. 14. The second connection detection means has a connection detection circuit, and the connection detection circuit has a galvanometer serially connected between the second detection terminal and the detection circuit power supply means. ,
14. The endoscope apparatus according to claim 13, wherein the endoscope apparatus is configured to detect the presence or absence of a current flowing between the second detection terminals based on an operation of the galvanometer. 15. The second connection detection means has a connection detection circuit, and the connection detection circuit has a relay switch connected in series between the third detection terminal and the detection circuit power supply means. 14. The endoscope apparatus according to claim 13, wherein the endoscope apparatus is configured to detect the presence or absence of a current flowing between the third detection terminals based on an open / close signal of the relay switch. 16. The power supply control means detects that there is a connection between the first and second connectors by the first connection detection means, and detects the connection between the third and fourth connectors by the second connection detection means. When it is detected that the connection is established, the power supply to the main body light source unit by the main power supply unit, the power supply to the endoscope circuit by the first power supply unit, and the peripheral device by the second power supply unit The endoscope apparatus according to any one of claims 8 to 15, wherein power supply to the units is performed in a predetermined order. 17. A power supply control means comprising: a plurality of the peripheral device units; and a power supply control unit configured to supply power from the second power supply unit to the peripheral device units in units of the peripheral device units. The control means detects that the connection between the first and second connectors is present by the first connection detection means, and the connection between the third and fourth connectors is present by all of the second connection detection means. When power is detected, power supply to the main body light source unit by the main body power supply unit, power supply to the endoscope circuit by the first power supply unit, and power supply to each of the peripheral device units by the second power supply unit 15. The endoscope apparatus according to any one of items 8 to 15, wherein the steps are performed in a predetermined order. 18. A protection detection adapter configured to enable electrical connection and disconnection with the third connector, wherein the protection detection adapter is connected to the third connector when the protection detection adapter is connected to the third connector. The endoscope apparatus according to any one of claims 8 to 17, wherein a conduction means is connected between the second detection terminals. 19. The endoscope apparatus according to claim 18, wherein said conduction means is a resistor. 20. The main body light source unit has lamp power supply means for supplying power to a lamp for supplying light to the endoscope unit, and the lamp power supply means receives power supply from the first power supply means. The endoscope apparatus according to any one of claims 1 to 19, wherein the endoscope apparatus is configured to operate with the endoscope.