TWI747507B - Auxiliary breathing device - Google Patents

Abstract

An auxiliary breathing device is disclosed. The auxiliary breathing device is used to supply gas to a patient. The auxiliary breathing device includes an intake valve, a pump, a pressure chamber, and an output valve. The intake valve is used to input the gas. The pump is connected to the inlet valve to pressurize the gas to a preset pressure so as to output a pressurized gas. The pressure chamber is connected to the pump to store the pressurized gas and maintain the pressurized gas in a pressurized state. The output valve is connected to the pressure chamber for outputting the pressurized gas to the patient.

Description

Assisted breathing device

The present invention relates to an auxiliary breathing device, particularly an auxiliary breathing device that can maintain the pressure of pressurized gas.

In order to help patients whose lung function cannot provide sufficient gas exchange to breathe, medical equipment now has an auxiliary breathing device to assist patients in breathing. If the auxiliary breathing device is classified according to the principle of air supply, it can be divided into three ventilation modes: positive pressure, negative pressure and high frequency. In the case of a positive pressure assisted breathing device, the principle is that the assisted breathing device uses a pump to generate pressurized air into the lungs of the patient, for example, to provide pressurized air at 1.04 atmospheres to help the patient breathe.

Please refer to FIG. 1 which is a schematic diagram of the pressure waveform of the pressurized gas of the prior art assisted breathing apparatus.

It can be seen from Figure 1 that the assisted breathing device in the prior art provides 1.04 atmospheres of pressurized air, and the pump needs to control the patient’s breathing frequency, so it needs to act intermittently to provide pressurized air so that the pump can output gas. The pressure will vary greatly. As a result, the pump needs to use a specification that can be pressurized, which will increase the cost. In addition, the intermittent and large-scale pressurization of the pump can easily cause the pressure of the output gas to be unstable, which will shorten the service life of the pump.

Therefore, it is necessary to invent a new assisted breathing device to solve the deficiencies of the previous technology.

The main purpose of the present invention is to provide an auxiliary breathing device that can maintain the pressure of pressurized gas.

In order to achieve the above-mentioned purpose, the assisted breathing apparatus of the present invention is used to supply gas to the patient. The auxiliary breathing device includes an intake valve, a pump, a pressure chamber and an output valve. The intake valve is used to input gas. The pump is connected to the intake valve to pressurize the gas to a preset pressure, thereby outputting pressurized gas. The pressure chamber is connected to the pump for storage and pressurization The gas keeps the pressurized gas in a pressurized state. The output valve is connected to the pressure chamber for outputting pressurized gas to the patient.

1: Assisted breathing device

10: intake valve

20: pump

30: Pressure chamber

31: Pressure gauge

50: Flowmeter

40: output valve

60: control module

P1: the first threshold

P2: second threshold

P3: Preset air pressure

Figure 1 is a schematic diagram of the pressure of the pressurized gas of the prior art assisted breathing device.

Figure 2 is a schematic diagram of the structure of the assisted breathing device of the present invention.

Fig. 3 is a schematic diagram of the pressure waveform of the pressurized gas of the assisted breathing device of the present invention.

Fig. 4 is a schematic diagram of the pressure waveform of the pump of the assisted breathing device of the present invention.

In order to allow your reviewer to better understand the technical content of the present invention, preferred specific embodiments are described as follows.

Hereinafter, please refer to FIG. 2 which is a schematic diagram of the structure of the assisted breathing apparatus of the present invention.

In the embodiment of the present invention, the assisted breathing apparatus 1 is used to supply a gas to a patient. The auxiliary breathing device 1 includes an intake valve 10, a pump 20, a pressure chamber 30, an output valve 40 and a flow meter 50. The intake valve 10 may be provided with a filter device for inputting the gas. The gas may be ordinary air or pure oxygen, and the present invention is not limited to this. The pump 20 is connected to the intake valve 10. The pump 20 can be a membrane type pump. The pressure of the gas is pressurized to the preset pressure. The preset pressure can be greater than 1 atmosphere and less than 2 atmospheres. For example, the pump 20 can pressurize the gas to 1.4 atmospheres, but the present invention is not limited to this value. In this way, the pump 20 can output a pressurized gas to the pressure chamber 30.

The pressure chamber 30 is connected to the pump 20 for storing the pressurized gas. In this way, the pressurized gas is maintained in a pressurized state in the pressure chamber 30, for example, continuously maintained at a pressure of 1.04 atmosphere. The pressure chamber 30 can store the pressurized gas at 1.04 atm in advance. The pressure chamber 30 further includes a pressure gauge 31 connected to it. The pressure gauge 31 is used to measure the internal pressure of the pressure chamber.

Both the output valve 40 and the flow meter 50 are connected to the pressure chamber 30 for outputting the pressurized gas to the patient. In one embodiment of the present invention, the pressure chamber 30 is first connected to the flow meter 50 and then to the output valve 40, but the present invention is not limited to this connection sequence. The output valve 40 and the flow meter 50 can also be electrically connected to the control module 60. The control module 60 can be operated by medical personnel. The control module 60 can be an internal control unit of a desktop computer, a notebook computer, a tablet computer, a smart phone or other smart wearable devices. It can use hardware devices, The software program is combined with the hardware device, and the firmware is combined with the hardware device. The control module 60 is used for controlling the output valve 40 to adjust an output frequency of the pressurized gas. In addition, the control module 60 also controls the flow Count 50 to adjust the output flow of one of the pressurized gas. In this way, the medical staff can use the control of the control module 60 to determine whether the pressurized gas is supplied to the patient by the opening and closing of the output valve 40 to control the patient's breathing frequency, and then the opening range of the flow meter 50 determines the pressurized gas supply The amount given to the patient.

Finally, please refer to FIG. 3 which is a schematic diagram of the pressure waveform of the pressurized gas of the assisted breathing device of the present invention and FIG. 4 is a schematic diagram of the pressure waveform of the pump of the assisted breathing device of the present invention.

Finally, since the present invention uses the opening and closing of the output valve 40 to determine whether the pressurized gas is supplied to the patient, the pressurized gas stored in the pressure chamber 30 can be maintained at about 1.04 atmospheric pressure at any time, as shown in FIG. 3. In addition, the control module 60 can also be electrically connected to the pressure gauge 31 and the pump 20, and the control module 60 controls the pump 20 according to the data of the pressure gauge 31. For example, in the initial state, the pressure chamber 30 can store pressurized gas whose pressure exceeds or equals the second threshold value P2. Then when the auxiliary breathing apparatus 1 is in use, when the control module 60 finds that the measured value of the pressure gauge 31 is lower than or equal to the first threshold value P1, the control module 60 controls the pump 20 to pressurize the gas . In one embodiment of the present invention, the first threshold P1 may be less than 1.04 atmospheres and greater than 1.03 atmospheres, such as 1.035 atmospheres, and the present invention does not limit this value. When the measured value of the pressure gauge 31 exceeds or equals the second threshold P2 At this time, the control module 60 makes the pump 20 slow down. The second threshold P2 may be greater than 1.04 atmospheres and less than 1.05 atmospheres. As shown in FIG. 4, because the pressurized gas is already stored in the pressure chamber 30, when the pump 20 is activated, the preset pressure P3, for example, 1.4 atmospheres, can be reached in a shorter time. In this way, a smaller air supply pump 20 can be used to achieve the purpose of stable pressure air supply. Because the output is stable, the pump 20 does not need to continuously adjust the speed (accelerating or decelerating) due to task changes, so it reduces the probability of failure, reduces noise and saves energy.

It should be noted that the control module 60 can be a hardware device, a software program combined with a hardware device, and a firmware combined with a hardware device. For example, a computer program product can be stored in a computer readable medium. Reading and executing each function of the invention, but the invention is not limited to the above-mentioned manner. In addition, this embodiment only exemplifies a preferred embodiment of the present invention, and in order to avoid redundant description, all possible variations and combinations are not described in detail. However, those skilled in the art should understand that not all of the above-mentioned modules or components are necessary. In order to implement the present invention, other detailed conventional modules or components may also be included. Each module or component may be omitted or modified as required, and there may not be other modules or components between any two modules. As long as it does not deviate from the basic structure of the present invention, the scope of the rights claimed in this patent shall be the scope of the patent application.

1: Assisted breathing device

10: intake valve

20: pump

30: Pressure chamber

31: Pressure gauge

50: Flowmeter

40: output valve

60: control module

Claims (10)

An auxiliary breathing device for supplying a gas to a patient. The auxiliary breathing device includes: an air inlet valve for inputting the gas; a pump connected to the air inlet valve for increasing the pressure of the gas Press to a preset air pressure to output a pressurized gas; a pressure chamber is connected to the pump for storing the pressurized gas, so that the pressurized gas is continuously maintained in a pressurized state in the pressure chamber; And an output valve connected to the pressure chamber for outputting the pressurized gas to the patient. The auxiliary breathing apparatus according to claim 1, further comprising a control module electrically connected to the output valve for controlling the output valve so as to adjust an output frequency of the pressurized gas. The auxiliary breathing device according to claim 2, further comprising a flow meter connected to the pressure chamber and the output valve, and electrically connected to the control module, which controls the flow meter to adjust the pressure One of the gas outputs flow. The auxiliary breathing device according to claim 1, further comprising a pressure gauge connected to the pressure chamber for measuring the internal pressure of the pressure chamber. The auxiliary breathing device according to claim 4, wherein the pressure gauge is electrically connected to the control module, and when the measurement value of the pressure gauge is lower than or equal to a first threshold, the control module controls The pump is pressurized. The auxiliary breathing device according to claim 5, wherein the first threshold is less than 1.04 atmospheres and greater than 1.03 atmospheres. The auxiliary breathing device according to claim 5, wherein the pressure gauge is electrically connected to the control module, and when the measured value of the pressure gauge is higher than or equal to a second threshold, the control module is used to slow down The action of the pump. The auxiliary breathing device according to claim 7, wherein the second threshold is greater than 1.04 atmospheres and less than 1.05 atmospheres. The auxiliary breathing device according to claim 1, wherein the intake valve is further provided with a filtering device. The assisted breathing device according to any one of claims 1 to 9, wherein the preset air pressure is greater than 1 atmosphere and less than 2 atmospheres.

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