JPH07194529A - Endoscope device - Google Patents

Abstract

PURPOSE:To prevent radiation of unnecessary noises from a treatment tool that is passed through a forceps channel. CONSTITUTION:A ferrite core 13 is attached to the peripheral edge of an inlet 12a, which is provided in the control portion 11a of a forceps channel 12 provided through an endoscope 11, and to the peripheral edge of a channel opening 12b located at the end of the endoscope, and noises that tend to radiate outward from a treatment tool passed through the forceps channel 12 are absorbed and attenuated by the ferrite core 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope apparatus for preventing unnecessary noise from being radiated from a treatment instrument inserted in a forceps channel of an endoscope.

[0002]

2. Description of the Related Art Conventionally, endoscope devices have been provided with high safety measures, and electromagnetic interference is no exception. This electromagnetic interference includes a problem of giving electromagnetic interference (EMI) and a problem of receiving electromagnetic interference (EMS), and these are collectively referred to as EMC.

In particular, as shown in FIG. 5, an electronic endoscope 1 is provided with many signal lines such as a transmission cable 3 for transmitting and receiving signals to and from a solid-state image sensor 2 provided at the endoscope tip 1a. Therefore, in order to prevent radiation of unnecessary noise from these signal lines to the outside, noise countermeasures such as providing a noise removal core and shielding are taken.

[0004]

However, as shown in FIG. 5, in various endoscopes typified by the electronic endoscope 1 described above, the forceps channel 5 through which the treatment tool 4 is inserted has the above-mentioned internal forceps channel 5. The treatment tool 4 that is formed from the proximal side operation portion 1b of the endoscope 1 to the tip 1a side and that is inserted into the forceps channel 5 is often made of metal, while the vicinity of the forceps channel 5 has a solid-state imaging device. Various signal lines typified by the transmission cable 3 for the element 2 are provided, and when the treatment tool 4 is inserted into the forceps channel 5, as described above, the signal line in the endoscope 1 is sufficient. Even if noise countermeasures are taken, noise from the signal line propagates to the treatment instrument 4 and is conducted through the treatment instrument 4,
As shown by the arrow in the figure, the state of being easily radiated to the outside becomes.

The present invention has been made in view of the above circumstances, and eliminates the radiation of unnecessary noise from the treatment instrument to the outside without providing noise countermeasures to the treatment instrument inserted into the forceps channel of the endoscope. It is an object of the present invention to provide an endoscopic device that can be used.

[0006]

In order to achieve the above-mentioned object, an endoscope apparatus according to the present invention has at least a vicinity of an insertion opening on the proximal side of a forceps channel provided in the endoscope and a vicinity of a channel opening on the distal side. An electromagnetic absorption member is provided on one side.

[0007]

[Operation] In the above configuration, noise propagated to the treatment instrument inserted into the forceps channel of the endoscope is conducted through the treatment instrument and at least the insertion opening of the forceps channel and the channel opening on the distal end side of the endoscope. Although it tries to radiate to the outside from one side, this noise is not radiated to the outside because it is absorbed and attenuated by the electromagnetic absorption member provided in at least one of the insertion port and the channel opening.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an endoscope according to an embodiment of the present invention.

A forceps channel 12 is bored from the proximal-side operation portion 11a of the endoscope 11 to the endoscope tip 1c through the endoscope insertion portion 11b.
The insertion port 12a is opened on the side of the operation portion 11a, and the channel opening 12b is provided on the side of the endoscope tip 11c.

Further, ferrite cores 13, which are an example of an electromagnetic absorbing member, are mounted in the vicinity of the insertion opening 12a and the channel opening 12b (periphery in the drawing).

With this structure, when the treatment tool 4 (see FIG. 5) is inserted into the forceps channel 12 of the endoscope 11 from the insertion port 12a side, the treatment tool 4 is disposed inside the endoscope 11. When the noise from the various signal lines is propagated, the treatment tool 4 is conducted to try to radiate to the outside from at least one of the insertion opening 12a and the channel opening 12b.

However, since the ferrite core 13 is attached to the insertion opening 12a and the channel opening 12b, noise that is transmitted through the treatment instrument 4 and radiates to the outside is absorbed by the ferrite core 13. Is attenuated. Therefore, the noise in the endoscope 11 is not radiated to the outside through the treatment tool 4.

As a result, it is possible to prevent unnecessary noise of the endoscope from being radiated without taking any measures against noise on the treatment instrument 4.

When the noise radiated from the treatment tool 4 is biased to either the insertion port 12a or the channel opening 12b of the forceps channel 12,
Only on the side where the noise is radiated, the ferrite core 13
May be attached.

2 and 3 show examples in which measures against noise are taken in the connecting portion between the endoscope and the external device.

The endoscope 21 shown in FIG. 2 is covered with a metal outer casing 21a except for the light source device 22 and the video processor 23, which are examples of external devices, and the outer periphery of the endoscope 21 is a high frequency electric scalpel. The metal sheath 21a is covered with an insulating sheath 21b so as not to come into contact with the operator or the patient when used together with the device.

The universal cable 2 of the endoscope 21
Connector parts 23 and 24 for attaching to the light source device 22 and the video processor 23 are provided at the bifurcated end of 1c.

As shown in FIG. 3, the metal connector receiving portion 2 for connecting to the connector portion 24 from the processor exterior 23a made of the metal body of the video processor 23.
5 is exposed, and the connector receiving portion 25 has a substrate 2 made of an insulator in which a plurality of female side contact pins 26 are implanted.
5a is fixed by solder 27. Further, each contact pin 26 is connected to an internal electric circuit 29 via a wiring cable 28 connected via a solder 27.

On the other hand, the connector portion 2 of the endoscope 21
4. The metallic outer sheath 2 covering the insulating outer sheath 21b of FIG.
A plurality of male-side contact pins 30 connected to the female-side contact pins 26 are exposed at the open end of 1a.
A substrate 31 made of an insulating material for implanting 0 is fixed to the opening end. In addition, a cable 3 that connects to each of the contact pins 30 and the solid-state imaging device 2 provided at the endoscope distal end 21c.
2a, the remote control cable 32b connected to the operation switch 21e provided on the near side operation unit 21d of the endoscope 21, and the light control cable 32c extending to the connector unit 23 side connected to the light source device 22 are connected by the solder 27. Has been done.

Further, the open end of the metallic casing 21a of the connector portion 24 is closed by an electromagnetic absorbing member 33. The electromagnetic absorbing member 33 is mainly made of a material that absorbs an electromagnetic wave such as ferrite, and the male contact pin 30 is projected from the electromagnetic absorbing member 33.

The connector portion 23 (the portion surrounded by B in FIG. 2) for connecting the light control cable 32c and the light source side wiring cable 35 connected to the electric circuit 34 built in the light source device 22 is the connector. Since the structure is similar to that of the portion 24, the description thereof will be omitted.

The light source device 22 and the video processor 23
When noise generated from the inside of an external device such as the above propagates to the endoscope 21 side through the wiring cables 28 and 35, the electromagnetic absorption member 33 provided in the connector portions 23 and 24 absorbs and attenuates the noise. Let Therefore, it is possible to prevent the propagation of this noise to the endoscope 21 side in advance, and as a result, the shielding property of the endoscope 21 and the external devices 22 and 23 is improved, and the unnecessary radiation noise is reduced. Can be achieved.

Further, FIG. 4 shows an example in which measures against noise are taken in the connector portion for connecting to an external device.

A connector portion 44 provided on the signal line side of a so-called patient circuit is attached to the connector receiving portion 42 of the external device 41 such as a CCU.

The outermost shell 4 of the connector receiving portion 42
2a is fixed to a connector support plate 43 fixed to the back surface of the front panel 41a of the external device 41. The connector support plate 43 is a metal plate that is electrically connected to an outer casing (not shown) grounded to the ground, and is the outermost shell 42a.
Is electrically connected to the housing exterior through the connector support plate 43.

Further, the inner shell 42b of the connector receiving portion 42 is formed of an insulator, and the signal pin 42c is supported and fixed to the inner shell 42b by a pin holding member 42d.

On the other hand, the outermost shell 44a of the signal line side connector portion 44, which is screwed into the outermost shell 42a of the connector receiving portion 42, is made of metal, and is guided between the outermost shells 42a and 44a. A conductive elastic material 45 is attached to improve the conductivity between the outermost shells 42a and 44a. In addition, the inner shell 44b of the connector portion 44
Is made of an insulator, and a signal pin 44c connected to the signal pin 42 is supported and fixed to the inner shell 44b through a pin holding member 44d. The outermost shell 44a of the connector portion 44 is fixed to the signal line side cable 46 via a housing 44e having an insulating property.

Further, the inner shell 44b of the connector portion 44 is provided with an electromagnetic absorption core 47 mainly made of an electromagnetic absorption material such as ferrite. The electromagnetic absorption core 47 is interposed between the outermost shell 42a and the inner shell 42b of the connector receiving portion 42. Further, the insulation distance between the outermost shell 42a and the signal pin 42c is determined by the inner shells 42b and 44 interposed therebetween.
secured in b.

Since the outermost shells 42a and 44a of the connector receiving portion 42 and the connector portion 44 are electrically connected to a housing (not shown) which is grounded to the ground, unnecessary noise from both outermost shells 42a and 44a is obtained. Radiation is blocked.
Further, since the electromagnetic absorption core 47 is interposed between the outermost shells 42a and 44a and the inner shell 42a, the signal line side cable 46 is provided by the electromagnetic absorption core 47.
The noise radiated to the outside can be absorbed and attenuated. The electromagnetic absorption core 47 may be provided on either the external device side or the signal line side.

[0031]

As described above, according to the present invention,
Since the electromagnetic absorption member is provided in at least one of the vicinity of the insertion port on the proximal side of the forceps channel provided in the endoscope and the vicinity of the channel opening on the distal end side, it is possible to prevent noises from being applied to the treatment tool inserted into the forceps channel. It is possible to eliminate unnecessary noise radiation of this treatment tool.

[Brief description of drawings]

FIG. 1 is a perspective view of an endoscope according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of an endoscope apparatus.

FIG. 3 is a detailed view of part A of FIG.

FIG. 4 is an enlarged view of a main part of another endoscope device.

FIG. 5 is a perspective view of a conventional endoscope.

[Explanation of symbols]

 11 Endoscope 12 Forceps Channel 12a Insertion Port 12b Channel Opening 13 Electromagnetic Absorption Member

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Keiji Handa 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Iwa ▲ Saki ▼ Seiji 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Inventor Akira Murata 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Inventor Akihiro Miyashita 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Inventor Akinoshi Uchikubo 2-chome Hatagaya, Shibuya-ku, Tokyo 43-2 Olympus Optical Co., Ltd. (72) Inventor Haruhiko Kaiya 2-chome Hatagaya, Shibuya-ku, Tokyo 43-2 No. 2 Olympus Optical Co., Ltd. (72) Inventor Shinji Yamashita 2-43-2 Hatagaya, Shibuya-ku, Tokyo Ori Inpass Optical Industry Co., Ltd. (72) Inventor Yuki Terakubo 2-34-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industry Co., Ltd.

Claims (1)

[Claims] 1. An endoscope apparatus, wherein an electromagnetic absorption member is provided in at least one of a vicinity of an insertion opening on a proximal side of a forceps channel provided in an endoscope and a vicinity of a channel opening on a distal end side.