JPH06319691A - Air feeding device for endoscope - Google Patents

Abstract

PURPOSE:To provide the sanitary air feeding device of an endoscope capable of preventing the infection caused when the bacteria in the atmospheric air are fed into a body. CONSTITUTION:The atmospheric air is fed into air feeding passages 11, 13 opened at the tip of an insertion section 2, and the air is sent out from a tip opening section 18 in the air feeding device of an endoscope. A bacterium adsorption filter adsorbing the bacteria in the air passing through the air feeding passages 11, 13 is provided between an atmospheric air intake section and the tip opening section 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention sends an air in the atmosphere into an air supply passage opening at the tip of an insertion portion and sends the air out of the end opening of the air supply passage. Qi device.

[0002]

2. Description of the Related Art In a conventional endoscope air supply device, air in the atmosphere is sent as it is into an air supply passage of an endoscope by an air supply pump, and the air is sent out from a distal end opening portion of an insertion portion. Was there.

[0003]

However, various bacteria are present in the air in the room, and when they are sent into the body as they are by the endoscope, infection may occur.

[0004] Therefore, an object of the present invention is to provide a hygienic air supply device for an endoscope, which can prevent the occurrence of infection due to bacteria in the atmosphere being sent into the body.

[0005]

In order to achieve the above object, an air supply device for an endoscope according to the present invention sends air in the atmosphere into an air supply passage opening at the tip of an insertion portion, and the air In the air supply device of the endoscope for sending out from the tip opening portion, a bacteria adsorption filter for adsorbing bacteria in the air passing through the air supply passage, the air intake portion in the atmosphere and the It is characterized in that it is provided between the tip opening portion.

[0006]

Embodiments will be described with reference to the drawings. In FIG. 2, reference numeral 1 denotes an operation section of the endoscope, and an insertion section 2 inserted into a body cavity and a flexible connection tube 3 connected to the light source device 5 are connected to each other.

The operation portion 1 is provided with a switching operation valve 20 for performing air / water supply operation, and the tips of the air supply pipe 11 and the water supply pipe 12 inserted into the flexible connecting pipe 3 are switched. It is connected to the side surface of the operation valve 20.

Further, the base end of the air / water supply pipe 13 that is passed through the inside of the insertion portion 2 for selectively ejecting air or water from the tip end opening 18 at the tip of the insertion portion 2 toward the surface of the observation window. ,
It is connected to the bottom of the switching operation valve 20.

Reference numeral 4 denotes a water storage tank whose inside is pressurized by an air supply pump 6 provided in the light source device 5 through a communication pipe 7, and the flexible connecting pipe 3 is pressurized by the pressure.
Air and water are sent out to the air supply pipe 11 and the water supply pipe 12 which are inserted therein.

In such a device, the switching operation valve 20
When the air is sent to the air supply state, the air sent from the atmosphere by the air supply pump 6 as shown by the arrow A passes through the communication pipe 7, passes through the water storage tank 4 as shown by the arrow B, and then the air supply pipe 11
Through the switching operation valve 20, further through the air / water supply pipe 13 as shown by arrow C, and sent out from the tip opening 18 into the body cavity as shown by arrow D.

FIG. 1 is an enlarged view of a portion of the communication pipe 7, which is divided into a pipe line 7a on the side of the light source device 5 and a pipe line 7b on the side of the water storage tank 4 which can be connected to and removed from it. There is.

The conduit 7b on the side of the water storage tank 4 is formed by a projecting cylinder 72 fixed by a fixing nut 71 so as to project laterally from the head of the water storage tank 4. 7
3,74 and 75 are O-rings for sealing.

A cap 76 is removably screwed and attached to the tip of the protruding cylinder 72. The cap 76 adsorbs bacteria so as to adsorb bacteria in the air passing through the communication pipe 7. A filter 77 is attached.

As the bacteria adsorption filter 77, for example, a calcium phosphate-based filter as disclosed in Japanese Patent Laid-Open No. 3-207414 can be used, and so-called apatite bioceramics in which a hydroxyapatite powder is attached to a nonwoven fabric of ceramic fibers. Influenza virus etc. can be adsorbed by using a filter.

Therefore, when the switching operation valve 20 is set to the air supply state and the air in the atmosphere is sent out from the tip end opening portion 18, all the air passes through the bacteria adsorption filter 77, and bacteria therein. After being removed by adsorption, it is delivered into the body cavity. In addition, contamination of water in the water storage tank 4 by the atmosphere is prevented.

As shown in FIG. 3, the cap 76 having the bacteria adsorption filter 77 attached thereto is attachable to and detachable from the protruding tube 72, so that the cap 76 is attached, for example, once or every predetermined number of endoscopic examinations. Replacing the product with a new one can reliably prevent infection caused by bacteria in the atmosphere entering the body cavity.

The present invention is not limited to the above embodiment, and the bacteria adsorption filter 77 is provided between the air intake part of the air supply pump 6 in the atmosphere and the tip end opening 18 of the air supply / water supply pipe 13. It may be provided at any part of the pipeline.

[0018]

According to the endoscope air supply device of the present invention, bacteria existing in the air sent into the body cavity from the atmosphere are adsorbed by the bacteria adsorption filter on the way, so that the bacteria in the atmosphere are absorbed. It is extremely hygienic because it can prevent the infection from occurring.

[Brief description of drawings]

FIG. 1 is a plan sectional view of a communication pipe portion of an embodiment.

FIG. 2 is a schematic diagram of an endoscope system according to an embodiment.

FIG. 3 is a side view of the communication pipe portion of the embodiment.

[Explanation of symbols] 2 Insertion part 6 Air supply pump 7 Communication pipe 11 Air supply pipe 13 Air supply / water supply pipe 18 Tip opening 77 Bacterial adsorption filter

Claims (1)

[Claims] 1. An air supply device for an endoscope, wherein air in the atmosphere is sent into an air supply passage opening at the tip of an insertion portion and the air is sent out from the opening at the tip end. An air supply device for an endoscope, wherein a bacteria adsorption filter for adsorbing bacteria in the passing air is provided between the air intake part in the atmosphere and the tip opening part.