JPH0337036A - Air feeder for endoscope - Google Patents

Abstract

PURPOSE:To stably feed high pressure gas to an endoscope without regulating it by providing a gas pressure control device between a gas feed section and the endoscope, and discharging the gas sucked through a gas suction port B at the same gas pressure as the gas pressure of sucked through a gas suction port A. CONSTITUTION:A gas pressure control device 21 has two gas suction ports A and B and two gas discharge ports C and D, and the gas sucked through the gas suction port B is discharged through the gas discharge port D at the same gas pressure as the gas pressure sucked through the gas suction port A. The gas sucked through the gas suction port A is discharged through the gas discharge port C at the gas pressure as it is. The noncombustible gas fed from a cylinder 15 with the gas pressure b2 is decompressed to the same pressure as the air fed from an air feed cylinder 11 with the gas pressure a2 and discharged through the gas discharge port D. The noncombustible gas from the gas pressure control device 21 may be fed to an endoscope 1 by switching a three-way selector valve 27. Normal air can be easily fed to the endoscope 1 by switching the three-way selector valve 27.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to an air supply device for an endoscope that communicates with an endoscope in order to supply gas to the endoscope. , regarding the failure of the gas pressure regulator W supplied to the endoscope.

(Prior art) As is well known, in an endoscope, a water supply tube and an air supply tube are installed internally from the end of the endoscope (connector) provided near the hand control section of the endoscope to the tip of the scope. Water and air are supplied from the inlet end (21) through these tubes toward the objective lens disposed at the distal end of the scope.

This type of ventilation is mainly performed to blow away water droplets attached to the outer surface of the objective lens by sending water through the water feeding tube. Another use of this type of air supply is to supply nonflammable gas into the body cavity of a subject, which is detected using an endoscope.

In other words, the supply of nonflammable gas into the body cavity of the subject is as follows:
This is a case where the patient's body cavity is filled with flammable gas, such as when pretreatment is insufficient due to the use of an endoscope in an emergency, and treatment using high frequency, etc. is performed along with the tit detection using the endoscope. In case there is a possibility of danger occurring due to ignition or combustion of the flammable gas,
: It is something that is done in order to do something.

Nonflammable gas, such as C02, which is exchanged with combustible gas in the body cavity through such ventilation, is generally stored under high pressure in a cylinder. For this reason, an air supply device is installed between the cylinder and the endoscope to prevent nonflammable gas from being suddenly sent into the test subject from the cylinder and causing a burden or danger to the test subject. It is being

In this type of air supply device, pressure regulating devices such as pressure regulating valves and safety valves are installed in appropriate devices in the air supply line communicating between the high-pressure cylinder and the endoscope. By appropriately adjusting the instruments, it is possible to supply air to the endoscope while suppressing fluctuations to some extent.

(Problem V1 to be solved by the invention) However, the =18 adjustment ti of such a pressure regulating device
ft is complicated and burdensome for the operator, and there is a problem that there is a very high risk of erroneous operation.

The present invention has been made in consideration of the problems of the prior art, and provides an internal system that can stably supply gas to an endoscope over time without the burden of adjustment, even if the gas is stored at high pressure. The purpose of the present invention is to provide an air supply device for an endoscope.

[Means for Solving the Problems of the Invention] In order to achieve the object described in 1., the endoscope air supply device according to the present invention has a first gas inhalation [1] Gas pressure control (a push device is used to communicate between the gas supply section and the endoscope) to discharge the gas at the same pressure as the gas inhaled by the second gas suction 1-1. The gist is that it should be installed in the trachea.

(For FJ) Is it under high pressure due to being stored in a cylinder? ) When sending the gas to the endoscope, this gas is sent to the first
As well as sending it to 1 for gas inhalation, If a low-pressure gas such as air is stably delivered and supplied using a pump or the like and sent to the second gas suction 1, the gas sent to the first gas suction 1-1 will be transferred to the second gas suction 1. Since the gas is discharged at the same pressure as the gas sent to the endoscope, even if the gas is stored at high pressure, the gas can be stably supplied to the endoscope over time without negative tH adjustment.

(Example) Hereinafter, an example of the endoscope device according to the present invention will be described.
This will be explained with reference to FIGS. 1 and 2.

FIG. 1 is a diagram showing the configuration of main parts provided in the endoscope 1 and the air supply device 3 for this endoscope.

In this figure, an air supply tube 9 is disposed within the endoscope 1 from a connector 7 provided near the hand operation section 5 to the scope distal end 1a. Intermediate.

Air is supplied from the scope tip 1a to the outside of the scope.

In addition, the air supply system 1f3 includes an air supply pump 11 that supplies and sends out a low-pressure gas such as air that does not require a specific gas supply source such as a cylinder, and a non-flammable gas such as CO7 that is stored in a high-pressure state. cylinder 15 with gas cock 13, air pump 11 and cylinder 15, and air pipe 17.
A gas pressure control device 21 and the like communicated through 19 are provided.

This gas pressure control device 21 has the same function as that used in diving equipment. That is, this gas pressure control device 21 controls two gas intakes 1'1 (second and first
Gas intake 1) A, B and 2 gas discharge ILIC
. .

Note that this gas pressure control device 21 discharges the gas sucked in through the gas suction DA through the gas exhausts C and IC at the same gas pressure.

Furthermore, the air supply device 3 includes a three-way switch for selectively discharging either of the two systems of gas discharged from each of the gas exhaust holes C and D of the gas restriction device 2I via the air supply pipes 23 and 25. The pillar 27 is provided with a pressure gauge 31 and a safety valve 33 provided in two air pipes communicating between the three-way switching pillar 27 and the connector 7 of the endoscope 1.

Next, the operation of the embodiment described in -1- will be explained.

As shown in FIG. 2, a non-flammable gas stored in a cylinder 15 and having a high internal pressure is internally inspected. The pressure is lowered to b2 and the gas is fed to the gas inlet port B. Along with this movement, the atmosphere rises.

[21] Pressurize the air with the air supply pump 11 to a suitably set waste floor, stably supply it, and inhale the gas.]21
Send to A.

As a result, in the gas pressure control device 21, the cylinder 1
The nonflammable gas supplied from 5 is lowered in pressure until the gas pressure b2 supplied from the air supply pump 11 becomes the same pressure as the air at 2, and is discharged from the gas discharge]-1D. The nonflammable gas from the pressure control device 21 is transferred to the three-way replacement valve 2.
You can send it to endoscope l by changing 7 to 57. Further, in this air supply device 3, normal air can be easily supplied to the endoscope 1 by switching the three-way switching valve 27.

Therefore, even when gas stored at high pressure is supplied to the endoscope 1, there is no burden on the operator's adjustment and there is no risk of erroneous operation, and the gas is stably supplied to the endoscope over time. Gas pressure can be supplied.

[Effects of the Invention] As explained below, in the endoscope air supply device according to the present invention, the gas pressure of the gas inhaled at the first gas inlet port is adjusted to the second gas inlet port 1-1. A gas pressure control device for discharging the gas at the same pressure as that of the gas to be inhaled is provided in the air supply pipe that communicates between the gas supply section and the endoscope.

For this reason, when sending high-pressure gas stored in a cylinder or the like to the endoscope, this gas is transferred to the above gas pressure! 11f
If the gas is sent to the first gas inlet 1-1 of the device, and a low-pressure gas such as air is stably supplied by a pump or the like and sent to the second gas inlet, the gas is supplied to the first gas inlet 1-1. The gas sent to the second gas intake is discharged at the same pressure as the gas sent to the first gas intake, so even if the gas is stored at high pressure, it is stable without urgent adjustment. Gas can be supplied to the endoscope.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the main parts of an embodiment of the air supply device for an endoscope according to the present invention, and FIG. 2 is a diagram illustrating an example of the operation around the gas pressure control device shown in the first factor. be. 1... Endoscope 3... Air supply device 9
...Air supply tube 11...Air supply pump 1
5...Cylinder 17゜10゜29...Air pipe 2■...Gas control device f (p!! person

Claims (1)

[Claims] (1) A gas pressure control device that discharges gas by making the gas pressure of the gas inhaled through the first gas inlet the same as the gas pressure of the gas inhaled through the second gas inlet, is connected to the gas supply unit. An air supply device for an endoscope, characterized in that it is provided in an air supply line that communicates with an endoscope.