JP2002346440A - Atomization device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simple, easy-to-make and compact atomization device to which a flexible small tube can be connected and with which constant and stable atomization can be obtained. SOLUTION: In the atomization device, a fluid tank 1 capable of maintaining pressure over a predetermined pressure by an inserted air-supply pressure pipe 2, is provided with small tube a 3 which starts from a gas phase part 4a of the tank 1, passes through 3a and the deep part of a liquid phase part 4b and goes out of the fluid tank, a small side hole 3b made on a part of the tubule located at the deep part of the liquid phase part, and an end 3c of the small tube projecting out of the tank, from which mist is sprayed, and with which a flexible small tube is connected, if necessary, to increase air-supply pressure when resistance increases.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spraying device, which not only has a stable spraying function by itself, but also has a flexible elongated thin tube at the tip of the device and a mist ejection portion thin tube. It relates to obtaining a small, nebulizing device which, even when connected, has the ability to provide a stable gas-liquid coarse mixture.

[0002]

2. Description of the Related Art Conventionally, a liquid has been sprayed and used in various places, thereby solving various problems. For example, addition of lidocaine (local anesthetic solution) after bronchoscope insertion during bronchoscopy under local anesthesia may induce coughing and uneven anesthesia depending on the method. To eliminate this drawback,
A flexible thin tube for spraying (1 m outer diameter) is inserted into the thin forceps hole of the bronchoscope.
m, about 100 cm in length), and it is desirable to administer the lidocaine solution in a “mist” as needed from the tip of the bronchoscope. In this regard, Mutta et al.
On March 996), a Jackson type nebulizer was modified and used as a gas-liquid coarse mixer, and a catheter (Teflon (registered trademark) tube outer diameter 1 mm, length 110 cm, having a small hole at the tip) was connected thereto. A nebulizer is proposed and its manufacturing method is disclosed. This technique was extremely effective as a medical method. However, the Jac-kson type nebulizer has a problem that the structure is complicated, expensive, and it is not easy to process a connecting portion for connecting a flexible thin tube.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to obtain fog with a very simple structure, and to provide a thin, long, and high resistance to the tip of the apparatus and the fog ejection section thin tube according to the application. Even if a flexible pipe is connected, a small-sized, high-performance spray device that can supply gas-liquid mixing by increasing the air supply pressure and can spray mist from the tip of the connecting narrow pipe Is to provide.

[0004]

The inventor of the present invention has conducted intensive studies to achieve the above object, and as a result, a liquid tank (1) having an air supply pressure pipe (2) inserted therein and capable of maintaining a pressure equal to or higher than a specified pressure. In (3), a thin tube (3) which starts from the gas phase part (4a) (3a) and goes out of the liquid tank through the deep part of the liquid phase part (4b)
And a small side hole (3
b) is provided, and the end of the thin tube (3
A spray device having a structure for ejecting fog from c). However, in this spraying device, the inner diameter of (3)> the diameter of (3b), and the inner diameter of 0.3 mm ≦ (3) ≦ 2.0 mm, and
0.1 mm ≦ (3b) diameter ≦ 0.7 mm. By making such a structure, (3c) depending on the application,
Even when connecting thin, long and high resistance tubes,
By increasing the pressure in (2) and increasing the air supply pressure, stable gas-liquid mixing can be supplied, and mist can be ejected from the distal end of the connecting thin tube. Here, the inner diameter of (3), (3
When the diameter of b) is out of the above range, there is a problem that fog does not come out from the tip of the thin tube connected to (3c), or the liquid does not form a mist but becomes a droplet or a line. In practicing the present invention, the material is determined according to the application, and is not particularly limited.

[0005]

The present invention will be described below in more detail with reference to Examples, but the present invention is not limited to these Examples. FIG. 1 shows an example of a spray device prototyped according to the principles of the present invention for use in bronchoscopy. In the liquid tank (1) into which the air supply pressure pipe (2) is inserted and which can maintain a pressure equal to or higher than a specified pressure, the liquid tank (1) starts from the gas phase part (4a) (3a) and the deep part of the liquid phase part (4b) A small tube (3) which goes out of the liquid tank through the liquid tank is provided.
b) is provided, and the end of the thin tube (3
The structure is such that fog is ejected from c). This (3
When a flexible thin tube (outside diameter 1 mm, inside diameter 0.5 mm, length about 110 cm, the end of which is a small hole) is connected to c) as an additional component, it becomes a nebulizer for bronchoscopy, and the small hole at the tip (0.3 mm diameter) to form a mist. Since the resistance of the flexible thin tube is large, air or oxygen of 4 to 5 atm is supplied from (2). The flexible tubule is inserted into the forceps hole of the bronchoscope (a tubule with a diameter of 2.5 mm provided in about 70 cm of the main body of the bronchoscope in order to perform treatment under the bronchoscope), and is taken out 1-2 cm from the tip of the bronchoscope. The larynx, trachea, and bronchi are sprayed with an anesthetic xylocaine solution while observing with a monitor.

[0006]

The spraying device according to the present invention has a very simple and small structure, but can easily generate a stable mist, and has an elongated flexible tip at the end of the device according to the application. It works even if a pipe with a large resistance is connected. It is extremely effective for simply inhaling a drug solution from the oral cavity or spraying an anesthetic solution for bronchoscopy at a medical site.

[0007]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of the present invention.

[Explanation of symbols]

 1: Liquid tank 2: Air supply pressure tube 3: Small tube 3a: Small tube end of liquid tank gas phase portion 3b: Small tube small side hole 3c: Small tube end outside liquid tank 4a: Liquid tank gas phase portion 4b: Liquid tank liquid phase Department

Claims (2)

[Claims] An air supply pressure pipe (2) is inserted, and in a liquid tank (1) capable of maintaining a pressure equal to or higher than a specified pressure, a liquid tank gas phase part (4a) starts (3a). Aibe (4
A thin tube (3) which goes out of the liquid tank through the deep portion of b) is provided, and a small side hole (3b) is formed in the thin tube portion deep in the liquid phase portion.
Is provided, and the end of the narrow tube (3c) which is out of the liquid tank
Spray device with a structure to blow out mist from However, in this spraying device, the inner diameter of (3)> the diameter of (3b), and
0.3 mm ≦ (3) inner diameter ≦ 2.0 mm and 0.1
mm ≦ (3b) diameter ≦ 0.7 mm 2. The spraying device according to claim 1, wherein the spraying device is used as a main component for administration of an anesthetic in the trachea during bronchoscopy under local anesthesia.