JPS633610B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an intrabody cavity inspection device that has an improved detection means for detecting wetness of an electrical contact portion exposed on the outer surface of an eyepiece portion, a connector portion, etc. of an endoscope.

BACKGROUND ART Body cavity inspection devices such as endoscopes, ultrasound probes for insertion into body cavities, and various treatment instruments need to be cleaned and disinfected after use. Therefore, a method is used to clean and disinfect the entire inspection device by immersing it in a cleaning solution and a disinfectant solution, but since the electrical contacts are exposed on the outer surface of this type of inspection device, these electrical contacts may be exposed to the chemical solution. If used while wet, not only will it not function normally, but it will also pose a danger to the test and test subject.

Therefore, in the past, for example, the patent application
No. 3277, a pair of electrodes are provided on the outer surface of the device to be detected for wetness in the vicinity of the electrical contacts, and a pair of electrodes is provided on the outer surface of the device to detect wetness, and a pair of electrodes is provided on the outer surface of the device to detect wetness. Accordingly, an alarm means that is activated is connected, and when the alarm means is activated, wetness of the electrical contact is detected, thereby solving the above-mentioned inconvenience.

However, with conventional devices, even when wet electrical contacts are detected, power is supplied to the device's electrical circuit and the device is ready for use. There was a risk that safety would be compromised.

The present invention has been made focusing on the above circumstances,
The object is to provide an intra-body cavity examination device which stops supplying power to the electrical circuit of the device and renders it unusable when wetness of the electrical contacts is detected.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 3. In the figure, 1 is an endoscope, and this endoscope 1 has an insertion section 2, an operation section 3, and an eyepiece section 4. Further, the endoscope 1 is provided with an image transmission optical system 5, an illumination light transmission optical system 6, and a light receiving element 7 for automatic exposure control. A camera 9 equipped with a film winding motor 8 is attached to the eyepiece section 4, and a connector section 1 is attached to the operation section 3.
A light source device 11 is connected via 0. On the other hand, electric contacts P ₁ and P ₂ are provided on the outer surface of the eyepiece 4.
are provided, and these electrical contacts P ₁ and P ₂ are electrically connected to the motor 8 of the camera 9. Further, on the outer surface of the connector portion 10, there are electrical contacts P ₃ , P ₄ electrically connected to the electrical contacts P ₁ , P ₂ .
Further, electrical contacts P ₅ and P ₆ electrically connected to the light receiving element 7 are provided.

Further, the above-mentioned electric contact is provided on the outer surface of the above-mentioned eyepiece part 4.
A pair of electrodes Q ₁ , _{Q 2} are provided between P 1 and P ₂ , and electrical contacts P ₃ , Q ₂ of the connector portion 10 are provided in the connector receiving hole 12 of the light source device 11 .
A pair of electrodes Q ₃ , Q ₄ , Q ₅ , Q ₆ , Q ₇ , and Q ₈ are provided in contact with the outer surfaces between P ₄ , P ₅ , and P ₆ , respectively. The above electrodes Q ₁ , Q ₂ , Q ₃ , Q ₄ , Q ₅ , Q ₆ and
Q ₇ and Q ₈ are coupled in parallel and electrically connected to the amplifier circuit 13 in the light source device 11, and constitute a wetness detection circuit A. In addition, the above amplifier circuit 1
3 includes a power supply means 14 and an alarm means 15 activated by the output thereof.

Further, inside the light source device 11, there is a motor power supply circuit 16 electrically connected to the electrical contacts P ₃ and P ₄ of the connector section 10, and further, electrical contacts P _{5 and} P 4 .
Automatic exposure control circuit 17 electrically connected to P ₆
is provided. The motor power supply circuit 16 and the automatic exposure control circuit 17 are provided with switches 18 and 19 that operate in conjunction with each other.
9 is the power supply means 14 via the delay means 20.
It is connected to the switch 21 of. As the delay means 20, a commercially available so-called self-timer may be used, and the switches 18, 19, and 21 are composed of three interlocking rotary switches and wired as shown in FIG. All switches 21 may be turned off in the first state shown, only the switch 21 is turned on in the second state shown by the dashed-dotted line, and all the switches 21 are turned on in the third state shown by the dashed-two dotted line. That is, it takes time to mechanically switch from the second state to the third state, allowing for a delay.

Further, the motor power supply circuit 16 and the automatic exposure control circuit 17 have interlocking switches 22 and 23.
is provided. These switches 22, 23 are composed of a steel plate 24, a contact 25, and a steel plate 26, a contact 27, as shown in FIG. 13, they are separated by the operation of an electromagnet 28.

After the endoscope 1 is immersed in a cleaning solution and a disinfectant solution to perform a prescribed cleaning, the eyepiece portion 4 of the endoscope 1 is
After the connector part 10 is wiped dry with a cloth or the like, the connector part 10 is inserted into the receiving hole 12 of the light source device 11 and used. by the way,
When using this, the eyepiece section 4 and the connector section 1
If invisible moisture is attached to the electrode 0, one of the electrodes Q ₁ , Q ₂ , Q ₃ , Q ₄ , Q ₅ , Q ₆ , Q ₇ , and Q ₈ will be short-circuited due to wetting. When the switch 21 of the power supply means 14 is turned on in this state, a current flows to the amplifier circuit 13 via the short-circuited electrodes, and its output activates the alarm means 15, and the switches 22 and 23 turn on the switches 18 and 19. It is turned OFF prior to this, and the supply of power to the automatic exposure control circuit 17 and the motor power supply circuit 16 is stopped.

Therefore, it is impossible to use the endoscope 1 when the eyepiece section 4 and the connector section 10 are wet.

On the other hand, when the eyepiece section 4 and the connector section 10 are not wet, the switches 18 and 19 are turned on in conjunction with the switch 21 being turned on, and the switches 22 and 23 are also turned on, and the automatic exposure control circuit 17 and the motor Power is supplied to the power supply circuit 16 and it becomes ready for use.

It should be noted that the present invention is not limited to the above embodiment, but may be as shown in FIG. 4. That is, electrodes Q ₃ , Q ₄ , Q ₅ , Q ₆ , Q ₇ , and Q ₈ were provided on the outer surface of the first connector portion 31 of the endoscope 1 and coupled in parallel with electrodes Q ₁ and Q ₂ . The second connector section 32 is connected to the electrical contacts P ₉ and P ₁₀ on the outer surface of the second connector section 32 , and connected to the amplifier circuit 13 when the second connector section 32 is inserted into the second connector receiving hole 33 of the light source device 11 . Let them do it. A stopper 34 is provided inside the light source device 11, and the stopper 34 is biased by a spring 35 to cause its tip end to protrude into the first connector receiving hole 36.

The stopper 34 is pulled out from the first connector receiving hole 36 by the operation of the electromagnet 37 against the biasing force of the spring 35, and the power supply circuit 38 to the electromagnet 37 is pulled out from the second connector receiving hole 36.
Connect to the electrical contacts P ₈ and P ₇ exposed to the In the middle part of the power supply circuit 38, there is a
A switch 39 is provided which is turned on and turned off when the amplifier circuit 13 outputs, and furthermore, the second connector section 32 is turned on.
A metal plate 40 is attached to the outer surface of the metal plate 40, and when the second connector portion 32 is inserted into the second connector receiving hole 33, the metal plate 40 closes the electrical contacts _P8 ,
Make P ₇ short-circuited.

When the second connector part 32 is inserted into the second connector receiving hole 33, the electrodes Q ₁ , Q ₂ . . .
...When the space between Q ₇ and Q ₈ is wet, the switch 39 is turned off by the output of the amplifier circuit 13, and the stopper 34 remains protruded into the first connector receiving hole 36.

Furthermore, when _{the electrodes Q 1 ,} Q _{2 .} To draw from 36, the first
The connector section 32 can now be inserted, and normal operation of the endoscope is started.

According to this embodiment, the electrodes Q ₁ , Q ₂ ...Q ₇ , Q ₈
When the gap is wet, the stopper 34 protrudes into the first connector receiving hole 36 and the first connector part 3
1 cannot be inserted, it is possible to prevent the first connector receiving hole 36 from getting wet.

Although the above embodiments have been described with reference to endoscopes, the present invention can be widely applied to ultrasonic diagnostic apparatuses for examining body cavities and the like.

As explained above, the present invention prevents power supply to the electric circuit when both ends of the wetness detection circuit are short-circuited due to wetness, making it impossible to use the device when it is wet. . Therefore, there is no need to use it in a wet state as in the past, and it is effective in preventing interference with normal functions and electrical disturbances to the examiner and patient. be.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is a schematic configuration diagram showing an intracorporeal examination device, Figure 2 is a configuration diagram showing a switch mechanism, and Figure 3 is a delay diagram. A configuration diagram showing the means, FIG. 4 is the first embodiment of the present invention.
It is a schematic block diagram which shows another Example. P ₁ to P ₁₀ ... electrical contact, 16, 17 ... electric circuit, A ... wetness detection circuit, 14 ... power supply means, 22, 23, 34 ... blocking means.

Claims (1)

[Claims] 1. In a body cavity inspection device having an electric circuit with electrical contacts on the outer surface, a wetness detection circuit having both ends disposed on the outer surface near the electrical contacts and a short circuit between the both ends of the wetness detection circuit due to wetness. means for supplying power to the electric circuit and the wetness detection circuit; and means for supplying power to the electric circuit to the wetness detection circuit. An intracorporeal examination apparatus characterized by having means for delaying power supply from the power supply.