CN108310565A - Disposable bag respirator - Google Patents

Abstract

The invention is a disposable simple respirator in the medical and health field, and aims to solve the problems that the current simple respirator is easy to cause cross-infection, inconvenient to operate, difficult to control the tidal volume, and the like. The device consists of a respirator, a bracket and a pressure gauge, wherein the respirator is a disposable item, and its function is to deliver gas into the patient's lungs; the bracket and the pressure gauge are inherent devices, and their function is to assist the function of the respirator. Install the respirator in the bracket, and control the tidal volume by adjusting the baffle; the air inlet on the oxygen storage bag is equipped with a filter, which can reduce bacteria and dust from entering the lung; the inspiratory valve adopts a ")" shape design to ensure Airtight, the exhalation hole is open when not sending air; the oxygen inlet is set on the mask, which can reduce carbon dioxide rebreathing and increase oxygen concentration. The invention has low manufacturing cost and convenient use, and is used in emergency department and intensive care unit, especially for patients with infectious diseases and drug-resistant bacteria infection.

Description

Disposable simple respirator

Technical field: The present invention relates to a respiratory support product for critically ill patients in the medical and health field, specifically a disposable simple respirator.

Background technology: the simple respirator in clinical use at present realizes artificial ventilation by pinching the balloon with fingers, and the parts need to be disassembled one by one for cleaning and disinfection. This type of simple respirator has the following problems: incomplete disinfection can lead to cross-infection between patients; the disassembly and assembly procedures of each part are complicated; multiple disinfections can easily lead to aging and air leakage of the parts; the balloon is suspended when squeezed, and the fingers are prone to fatigue. It is difficult to withstand long-term extrusion; the tidal volume is difficult to control; the dead space in the mask is large, and the rebreathing volume is large.

Summary of the invention: In order to solve the problems that the current simple respirator is easy to cause cross infection, tidal volume is difficult to control, the disassembly procedure is complicated, and the operation is inconvenient, etc., the present invention designs a disposable simple respirator for emergency and intensive care room, especially for patients with infectious diseases and drug-resistant bacterial infections.

The specific scheme of the present invention is: the disposable simple respirator is composed of a respirator, a bracket and a pressure gauge, wherein the respirator is a disposable article, and its function is to carry out artificial ventilation; the bracket and the pressure gauge are inherent devices, and its function is to assist breathing function of the device.

The respirator is composed of an air bag, an oxygen storage bag, a threaded tube, a bent tube, and a mask, which need to be installed in a bracket for use.

The air supply bag is a folded cylindrical shape, and the delivered tidal volume can be adjusted according to the depth of extrusion; the upper bottom surface of the air supply bag is provided with a groove that matches the pressing plate on the bracket, so that the respirator can be tightly locked into the bracket; The neck of the air bag is connected to the oxygen storage bag, and there is an air intake valve opening to the direction of the air supply bag inside. When the air supply bag is pressed, the pressure in the air supply bag is greater than the pressure in the oxygen storage bag, and the valve is closed; when the air supply bag rebounds, The internal pressure is less than the internal pressure of the oxygen storage bag, and the valve is opened.

The oxygen storage bag is cylindrical with hard upper and lower bottom surfaces and soft side walls. It expands and stores oxygen when there is a lot of oxygen, and collapses when there is little oxygen. An oxygen port with a cover and an oxygen tube are arranged on the upper and bottom surfaces of the oxygen storage bag. The oxygen tube is an ordinary hollow pipe for inputting oxygen into the oxygen storage bag; if there is no oxygen, the oxygen port can be covered. An air port with a cover is provided on the upper and bottom surface of the oxygen storage bag. When there is oxygen, the cover is closed. If there is no oxygen, the cover is opened to facilitate the rapid entry of air. An oxygen release valve is set on the lower surface of the oxygen storage bag, and the opening of the oxygen release valve is outward. When the oxygen in the oxygen storage bag is insufficient, the valve is closed; Leakage; an air valve is set on the lower surface of the oxygen storage bag, and the opening of the air valve is inward. When the air supply bag rebounds, if the oxygen storage bag is full of oxygen, the valve is closed; if there is insufficient oxygen, the pressure inside the oxygen storage bag is lower than the external pressure , the valve is open, and the air enters; the air port and the air valve are equipped with air filters, which can reduce bacteria and dust in the air from entering the lungs when used for a long time for patients with artificial airways.

The outlet below the air bag is connected with the threaded pipe, and is connected with the mask through an elbow.

The bent pipe is in the shape of an "L", on which an inhalation valve and an exhalation hole are arranged near the end of the threaded pipe. The inhalation valve is in the shape of double "(". The wall is tightly fitted, so that the exhalation hole is closed and the lumen is sealed; after the air supply bag stops pressing, the pressure in the threaded tube drops, the valve is closed, and the exhalation hole is opened. There is a pressure detection hole with a cover on the elbow, which can be connected to a pressure gauge To detect the pressure in the elbow to ensure the safety of the patient; if it is not necessary to detect the pressure, the hole can be closed with a cover; a filter is installed inside the pressure detection hole to avoid contamination of the pressure gauge. An elastic "cross" with a cover is installed on the elbow Pressure valve, under normal circumstances, the valve is closed; when the pressure in the elbow is too high and exceeds a certain pressure, the valve is opened due to elastic expansion, and part of the gas leaks out to avoid excessive pressure and damage the lungs; if the situation requires, This valve can be closed with a cap.

The end of the elbow is connected to the mask. If an artificial airway has been established, the mask can be removed and the elbow is connected to the artificial airway.

There is an oxygen valve with a cover and a special-shaped oxygen tube on the mask; the oxygen valve opens inward, and when the air supply bag is pressed, when the pressure inside the mask is greater than the pressure in the special-shaped oxygen tube, the valve closes; when the air supply bag is stopped, the pressure inside the mask drops, and this valve Open; the special-shaped oxygen tube is a pipe with a special structure, which can input oxygen into the mask; the special-shaped oxygen tube is provided with an elastic oxygen storage chamber, and the side wall of the elastic oxygen storage chamber is provided with an oxygen leak hole; when the oxygen valve is closed, the pressure in the special-shaped oxygen tube As the oxygen increases, the elastic oxygen storage chamber expands gradually. After the elastic oxygen storage chamber expands to a certain volume, the oxygen leak hole opens and the excess oxygen leaks out; when the oxygen valve is opened, the elastic oxygen storage chamber retracts into a thin tube , the oxygen stored in it quickly enters the mask to replace the exhaled exhaust gas, which is beneficial to reduce carbon dioxide rebreathing and increase the concentration of oxygen inhalation. If oxygen is not required in the mask, the oxygen valve can be covered.

The function of the bracket is to support and fix the respirator to make it easy to operate; a pressing plate and a card slot are set on the bracket, and the top groove and neck of the respirator are respectively fixed between the pressing plate and the card slot to fix the respirator , it is convenient to press with the palm or foot; a handle is set on the pressing board, when the handle is lifted up, it can help the top groove of the respirator to be smoothly inserted into the pressing board, and the handle can help fix the hand or foot when pressing the air bag; the bracket has two The side spring device can ensure that the air supply bag rebounds and resets quickly after pressing; the bracket is provided with a scale groove and a baffle plate, and the baffle plate is inserted into different positions of the scale groove to control the tidal volume output by the air supply bag.

A pressure gauge can be connected to the pressure detection hole for monitoring the pressure in the elbow.

Compared with the simple respirator currently used clinically, the present invention has the following beneficial effects:

The invention has simple technology, low requirements on materials, and low production cost; one-time use can prevent cross-infection among patients; With or without oxygen source, certain openings can be selectively opened or closed; dual-channel oxygen supply can reduce carbon dioxide rebreathing and increase oxygen concentration; realize flexible use, ensure patient safety, and improve the success rate of rescue.

Description of drawings

Figure 1 is a perspective view of the appearance

Figure 2 is a cross-sectional view of the respirator

Figure 3 is a three-dimensional view of the bracket

Figure 4 is a cross-sectional view when the suction valve is open

Figure 5 is the working diagram of the "cross" pressure relief valve when it is open

Figure 6 is a cross-sectional view of the special-shaped oxygen tube

In the picture:

1-air supply bag; 2-groove; 3-intake valve; 4-neck; 5-oxygen storage bag; 6-oxygen port; 7-oxygen tube; 8-air port; 9-oxygen release valve; 10- Air valve; 11-threaded pipe; 12-bend pipe; 13-inhalation valve; 14-exhalation hole; 15-"cross" pressure reducing valve; 16-pressure detection hole; 17-mask; 18-oxygen valve; 19 -Special-shaped oxygen tube; 20-elastic oxygen storage chamber; 21-oxygen release hole; 22-pressure gauge; 23-press plate; 24-card slot; 25-handle; 26-spring; plate.

Detailed ways

The present invention will be described in detail below in combination with actual conditions.

【Example 1】

General emergency use method:

Preparation before use:

Install the respirator on the bracket: remove the baffle plate 28, lift the handle 25, hold the neck 4 to snap the respirator into the slot 24, and insert the upper groove 2 of the air bag 1 into the pressing plate 23; Insert the baffle plate 28 into the scale groove 27 to select the output tidal volume; connect the pressure gauge 22 to the pressure detection hole 16; connect the oxygen tube 7 and the special-shaped oxygen tube 19 to the oxygen source; cover the patient's mouth and nose with the mask 17.

Use process:

The operator can press and relax by placing hands or feet between the pressing plate 23 and the handle 25 .

In the static state: one way of oxygen enters the oxygen storage bag 5 from the oxygen tube 7, and the oxygen storage bag 5 gradually expands. When the pressure inside the oxygen storage bag 5 is greater than the external pressure, the intake valve 3 and the oxygen release valve 9 are opened, and oxygen enters the air supply bag 1 or leakage; another way of oxygen enters the special-shaped oxygen tube 19, the pressure in the special-shaped oxygen tube 19 increases, the oxygen valve 18 opens, oxygen enters the mask 17, the patient can inhale oxygen in the mask 17, and the exhaled gas is discharged from the exhalation hole 14 .

When pressing: the spring 26 shrinks, the volume of the air supply bag 1 becomes smaller, the pressure increases, the intake valve 3 closes, the gas in the air supply bag 1 is delivered to the elbow 12 through the threaded pipe 11; the pressure in the elbow 12 increases, and the air intake valve 13 Open, while the exhalation hole 14 is closed, the gas enters the mask 17; when the pressure in the mask 17 is greater than the special-shaped oxygen tube 19, the oxygen valve 18 is closed, and the gas is delivered to the patient's lung; during the closing process of the oxygen valve 18, the oxygen continues to flow out to make the special-shaped oxygen The pressure in the tube 19 increases, and the elastic oxygen storage chamber 20 begins to expand, and oxygen is stored in the elastic oxygen storage chamber 20; when the elastic oxygen storage chamber 20 expands to a certain volume, the oxygen leak hole 21 on its side wall is opened, and excess oxygen leaks out . During the pressing process, the pressure gauge 22 displays the pressure in the elbow 12 in real time, and when the pressure is greater than a certain value, the "cross" pressure reducing valve 15 is opened, and the gas leaks out to achieve the purpose of decompression.

When relaxing: the pressure in the elbow 12 drops, the inhalation valve 13 returns to the closed state, the exhalation hole 14 opens, and the patient’s exhaled gas is discharged from the exhalation hole 14; the pressure in the mask 17 drops, the oxygen valve 18 opens, and the elastic oxygen storage chamber 20 Retraction, the stored oxygen enters the mask 17, and the exhaled waste gas is rushed out from the exhalation hole 14; the spring 26 recovers, the pressure in the air supply bag 1 is lower than the oxygen storage bag 5, the intake valve 3 is opened, and the oxygen storage bag 5 The air in the air enters the air supply bag 1; if the amount of oxygen in the oxygen storage bag 5 is not enough to fill the air supply bag 1, the air valve 10 is opened, and the air enters the oxygen storage bag 5 and the air supply bag 1. One way of oxygen enters the oxygen storage bag 5 through the oxygen tube 7, and the other way of oxygen enters the mask 17 through the special-shaped oxygen tube 19.

[Example 2]

If there is no support in an emergency, place the respirator upside down, put your hands on the neck 4, and press and relax.

[Example 3]

When not needing high-concentration oxygen, oxygen tube 7 or special-shaped oxygen tube 19 can be removed, and cover. When there is no source of oxygen or oxygen is not needed, the oxygen tube 7 and the special-shaped oxygen tube 19 can be removed, and the air port 8 can be opened.

【Example 4】

When the pressure does not need to be detected, the pressure gauge 22 is not installed. When not needing pressure protection, close " cross " relief valve 15 upper lids.

【Example 5】

If the patient has established an artificial airway, take off the mask 17, and the elbow 12 is connected with the artificial airway.

Claims (8)

1. disposable bag respirator, it is characterised in that：Including respirator, holder and pressure gauge；Respirator is by for air bag (1), oxygen reservoir (5), screwed pipe (11), bend pipe (12), mask (17) composition；On holder be arranged pressing plate (23), handle (25), Spring (26), scale slot (27), plate washer (28), card slot (24).

2. the disposable bag respirator according to right 1, it is characterised in that：Respirator is disposable, is used for Carry out artificial ventilation；Holder and pressure gauge are intrinsic device, are used for the function of assisting respirator；Respirator is mounted on using preceding In holder, pressure gauge is installed on respirator；If emergency is without holder, respirator can individually exercise ventilatory function.

3. the disposable bag respirator according to right 1, it is characterised in that：Oxygen valve (18) is set on mask (17) With special-shaped oxygen hose (19), setting elasticity storage oxygen chamber (20) and oxygen hole (21) is let out on special-shaped oxygen hose (19).

4. the disposable bag respirator according to right 2, it is characterised in that：Pressing plate (23) and card are set on holder Slot (24), setting handle (25) in pressing plate (23).

5. the disposable bag respirator according to right 1, it is characterised in that：Oxygen reservoir (5) be upper bottom surface matter it is hard, Soft cylindric of side wall matter, lets out oxygen valve (9) and air valve (10) is located at lower section, and air scoop (8) is arranged in top.

6. being respectively provided with air mistake on the disposable bag respirator according to right 5, air scoop (8) and air valve (10) Strainer.

7. the disposable bag respirator according to right 1, it is characterised in that：Inlet valve (13) use is bis-, and " (" type is set Meter, seal are stronger.

8. the disposable bag respirator according to right 1, it is characterised in that：" cross " is arranged on bend pipe (12) to depressurize Valve (15) and pressure sensing port (16), to ensure patient safety.