JPH071341B2 - Electronic endoscopic device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electronic endoscope apparatus, and in particular, a solid-state imaging device (hereinafter referred to as CCD) is provided at a tip end thereof, and a signal obtained from the CCD is processed by a processor. The present invention relates to an electronic endoscope device that displays a subject on the screen of a monitor television.

[Conventional technology]

The electronic endoscope device is mainly composed of an electronic scope consisting of an insertion section and a manual operation section, a processor for generating CCD timing pulses and processing a signal obtained from the CCD, and a television monitor for displaying an image. . That is, as shown in FIG. 5, the electronic endoscope apparatus has a distal end portion of the endoscope insertion portion 10.
The CCD 12 is built in, the signal from the CCD 12 is transmitted to the processor 14 via the multi-core cable 16, and the image signal processed in the processor 14 is further transmitted to a monitor television (not shown) to display the image on the screen. It

The multi-core cable 16 is connected to the connector 20 which is connected to the manual operation section 17 through the connecting section. This multi-core cable 16
Is shielded by a shield tube 18. The shield tube 18 is connected to the DC power ground in the setup board 20 '.

The processor 14 is provided with a differential amplifier 24.
24 is connected to the connector 26 via cables 24A and 24B. When the connector 20 is connected to the connector 26, the video signal line 16 and the video return line 22 are connected to the differential amplifier 24 via the cables 24A and 24B.

In this state, when the high frequency snare 29 of the high frequency scalpel device 28 is used through the processing tool insertion channel C of the electronic endoscope to cut the affected part 30 of the patient 34, the high frequency snare 29 is operated while watching the image on the monitor TV. And high frequency snare 29 ring 32
Is hung on the affected part 30, a foot switch (not shown) of the high-frequency scalpel device 28 is turned on, and a high-frequency current is passed through the ring 32 to cut the affected part.

In FIG. 5, 36 is a patient electrode plate, 38 is a cable connecting the patient electrode 36 and the high-frequency knife device 28, 39 is a light guide connector, and 40 is a leakage bypass wire of the high-frequency knife device 28.

However, when the foot switch of the high frequency scalpel device 28 is turned on, high frequency noise is generated by energization of high frequency, and this high frequency noise enters the electronic scope. In this case, the high frequency noise that has entered the electronic scope is
Get in. The high frequency noise that has entered these cables is not necessarily canceled by the differential amplifier 24 because the waveform, amplitude, and phase do not necessarily match.

Therefore, when the foot switch is turned on and a high-frequency current is applied to the high-frequency snare 29, the image on the monitor TV becomes unclear and the affected area 30 cannot be seen.

On the other hand, the applicant of the present application has recently proposed an electronic endoscope apparatus capable of solving the above-mentioned problems (Japanese Patent Application No. 64-64).
-996 (see JP-A-2-182232)).

Hereinafter, this electronic endoscope apparatus will be described in detail. This electronic endoscope apparatus is mainly composed of an endoscope insertion section, a hand operation section, a processor, and a monitor TV, and, as shown in FIG. 3, via a connecting section 70 extending from a hand operation section (not shown). A connector 72 having a built-in setup board 20 'shown in FIG. 4 is provided. The terminal pin 72 of this connector 72
A, 72B ... Are connected to a CCD or the like built in the distal end of the endoscope insertion portion (not shown in FIG. 3) via a multi-core cable 74. Further, an end of a short-circuit member 76 made of a metal elastic piece is fixed to the connector 72 via a screw 78. The short-circuit member 76 and the screw 78 are made of metal, and one end of a bypass capacitor 86 is connected to the screw 78. Further, as shown in FIGS. 3 and 4, one end of the leakage bypass capacitor connecting wire 84 is connected to the metal fitting port 70A of the connecting portion 70. A capacitor 86 is connected to the other end of the leakage bypass capacitor connection line 84. Capacitor 86
Is connected to the short-circuit member 76 via a screw 78. As shown in FIG. 3, the metal fitting port 70A is a leakage bypass wire 88.
Is connected to the high-frequency scalpel device 90 via.

As shown in FIG. 3, a high-frequency snare 92 is connected to the high-frequency scalpel device 84, and the ring for cutting the affected part of the high-frequency snare 92 is the processing tool insertion channel of the endoscope insertion portion as shown in FIG. It projects from the tip. The high frequency snare 92 is inserted into a forceps channel 94 sealed with a metal plating layer.

Further, as shown in FIG. 3, a connector 100 is provided on the processor 102 via screws 101, 101. The connector 100 is made of a metal material. The connector 100 is provided with a socket terminal (not shown), and the terminal pins 72A, 72B, ... Of the connector 72 are inserted into the socket terminal. At this time, the short-circuit member 76 of the connector 72 contacts the inside of the case of the connector 100. To do. Further, the socket terminal is electrically connected to a power supply unit, a processing unit and the like (not shown) of the processor 102.

First, fix the connector 72 to the connector 100 to fix the terminal pin 72.
When A, 72B ... and the socket terminal are connected, at the same time short-circuit member 76
Contacts the case metal of connector 100 and shorts to the processor housing. In this state, a driving power source or the like from the processor 102 is added to the CCD to cause the CCD to output a signal. This signal is transmitted to a processing unit (not shown) of the processor 102 via the multi-core cable 74 to be subjected to signal processing, and an image is displayed on the monitor television.

Next, while watching the image on the monitor TV, the distal end of an electronic endoscope (not shown) is operated to search for the affected area, and the high frequency snare 92 is operated to hang on the affected area. Then high frequency scalpel device
The foot switch of 90 is operated to apply a high-frequency current to the high-frequency snare 92 to cut the affected part and stop the bleeding. At this time, since a high frequency current is passed, high frequency noise is generated and the electronic scope enters. However, the electronic scope is a metal fitting
70A, capacitor 86, screw 78, short-circuit member 76, connector 100
Since it is electrically connected to the processor housing via the, and is further connected to the high frequency knife device 90 via the leakage bypass wire 88, high frequency noise can be released to the connector 100 and the high frequency knife device 90. The shield tube 82 is connected to the DC power ground in the setup board 20 ', and the leakage bypass wire 88 is connected to the capacitor 8
6. Since the connector 100 is installed via the short-circuit member 76, high frequency noise does not enter the multi-core cable 74. Therefore, a clear image can be displayed on the monitor television.

Further, since the leakage bypass capacitor connection line 84 is provided with the capacitor 86, the DC current leaking from the power supply of the processor 102 is blocked by the capacitor 90 and does not leak to the electronic scope side.

[Problems to be Solved by the Invention]

By the way, in general, the connector part of the electronic scope has a waterproof structure except for the terminal part, and when cleaning the electronic scope, as shown in FIG. Is attached, and the entire electronic scope is immersed in water, a chemical solution, or the like.

However, as shown in FIG. 3, the connector 72 short-circuit member
When 76 is externally attached by a screw 78, there is a problem that the connector 72 cannot be hermetically sealed at the screw fixing portion of the short-circuit member 76.

The present invention has been made in view of the above circumstances, and provides an electronic endoscope device capable of improving high-frequency interference noise from a high-frequency scalpel device and maintaining airtightness of a connector of an electronic scope. The purpose is to

[Means for solving the problem]

In order to achieve the above object, the present invention provides an electronic scope in which a solid-state imaging device is built in a tip portion and a first connector having airtightness is provided at the other end except for a terminal portion, and the first scope.
And a processor for processing a signal input through the second connector and transmitting a television signal, and a leakage bypass in a high-frequency scalpel device connected to the electronic scope. A short-circuit member connected to the wire via a capacitor,
The short-circuit member is disposed so as to face the terminal portion of the first connector so as to maintain the airtightness of the first connector, and the short-circuit member of the processor is connected when the first connector and the second connector are connected. It is characterized by being connected to the chassis.

[Action]

According to the present invention, since the short-circuit member connected to the leakage bypass wire of the high-frequency scalpel device via the capacitor is arranged so as to face the terminal portion of the connector of the electronic scope, the terminal portion of the connector of the electronic scope is provided. By attaching the waterproof cap to the connector, the airtightness of the connector having the waterproof structure can be maintained regardless of the attachment of the short-circuit member. Further, the short-circuit member is connected to the processor chassis when the connector on the electronic scope side is connected to the connector on the processor side, whereby high-frequency noise generated when the high-frequency scalpel device is used is removed from the leakage bypass wire to the capacitor and the short-circuit member. Can be missed through to the processor chassis.

〔Example〕

Hereinafter, preferred embodiments of an electronic endoscope apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 1 (A) and 1 (B) are a front view and a side view including a partial cross section of a connector of an electronic scope applied to an electronic endoscope apparatus according to the present invention. Since the electronic endoscope apparatus excluding this connector is the same as the conventional apparatus shown in FIGS. 3 to 5, detailed description thereof will be omitted here.

In FIGS. 1A and 1B, the connector 172 of the electronic scope has a waterproof structure such as an outer cover 202 made of plastic. Inside this exterior cover 202,
From the terminal opening of the outer cover 202 to the setup board 2
0'is inserted (see FIG. 4) and secured by screws 204,240.

Now, in the terminal part 208 of the setup board 20 ′,
A plurality of terminals 210 in two rows are provided in the central portion, and a short-circuit member (section spring) 220 is provided.

The section spring 220 has the shape shown in FIG.
The two contact pieces 220A, 220A are formed in the groove portions 224 in the terminals 210 of the two rows.
They are inserted into the terminal portion 208 so as to face each other via and are fixed by an adhesive. The portion of the plastic member 226 surrounding the terminal 210 to which the contact pieces 220A, 220A are attached is formed in a concave shape so that the contact pieces 220, 220A are fitted therein.

Further, one end of the capacitor 86 is connected to the hole 220B of the section spring 220, and the other end of the capacitor 86 is connected to the metal fitting port 70A of the connecting portion 70 via the leakage bypass capacitor connecting line 84 (FIG. 3). , See FIG. 4).

Connect the electronic scope connector 172 with the above configuration to the processor 1
When attached to 02 connector 100, connector 172 and connector
The terminals 100 and 100 are connected to each other, and the contact pieces 220A and 220A of the section spring 220 contact the outer frame metal cover of the connector 100 to be electrically connected to the chassis (ground) of the processor 102.

Therefore, even if high frequency noise enters the electronic scope when the high frequency scalpel device 90 is used, the electronic scope is
Since it is connected to the chassis of the processor 102 via A, the connector 86, and the section spring 220, and is also connected to the chassis of the high-frequency female device 90 via the leakage bypass wire 88, high-frequency noise is transmitted to the chassis of the processor 102 and high-frequency noise. Can escape to the chassis of the female device 90.

Since the section spring 220 is provided in the terminal portion 208 of the connector 172, the waterproof cap 50 shown in FIG. 6 is attached to the terminal portion 208 of the connector 172 to clean the connector 172 when cleaning the electronic scope. It can be held and can be washed by immersing the entire electronic scope in water, a chemical solution or the like.

The shape of the segment spring 220 is not limited to this embodiment, and various shapes are conceivable. The point is that any shape can be used as long as it is made of a conductive member having a predetermined contact area capable of sufficiently releasing high frequency noise. Good.

〔The invention's effect〕

As described above, according to the electronic endoscope apparatus of the present invention, the high frequency noise generated when the high frequency scalpel apparatus is used can be released to the processor via the capacitor and the short-circuit member. Therefore, when the high-frequency scalpel device is used, a clear image can be displayed on the monitor television screen, so that the affected area is not lost when the affected area is cut, and the safety is improved.

Further, since the short-circuit member is provided in the terminal portion of the connector of the electronic scope, the hermeticity of the connector can be maintained, and the waterproof structure suitable for cleaning after use of the electronic scope can be obtained.

[Brief description of drawings]

1 (A) and 1 (B) are a front view and a side view including a partial cross section of a connector of an electronic scope applied to an electronic endoscope apparatus according to the present invention, and FIG. 2 is shown in FIG. 3 and 5 are schematic explanatory views showing a conventional electronic endoscope apparatus, and FIG. 4 is a connector on the electronic scope side of the electronic endoscope apparatus shown in FIG. 6 is an exploded perspective view, and FIG. 6 is a perspective view showing a waterproof cap of a connector on the electronic scope side. 70A ... Metal fitting port, 88 ... Leakage bypass wire, 86 ... Capacitor, 90 ... High frequency female device, 100,172 ... Connector,
102 ... Processor, 202 ... Exterior cover, 208 ... Terminal part, 210
… Terminal, 220… Short-circuit member (section spring), 220A… Contact piece.

Claims (1)

[Claims] 1. An electronic scope having a solid-state imaging device built in at a tip end thereof, and a first connector having an airtightness except for a terminal portion provided at the other end, and an electronic scope connected to the first connector. A processor having two connectors for processing a signal inputted through the second connector and transmitting a television signal, and a processor for connecting to a leakage bypass wire in a high frequency scalpel device connected to the electronic scope through a capacitor. The short-circuit member is disposed so as to face the terminal portion of the first connector in order to maintain the airtightness of the first connector, and the first connector and the second connector. An electronic endoscope apparatus characterized in that it is connected to the chassis of the processor when connected to a connector.