TWM605814U - Auxiliary device for breathing - Google Patents

Abstract

A breathing assist device, the main feature is that a nozzle tube is formed axially in parallel in the air outlet passage of the mask body, the outlet end of the nozzle tube faces the air outlet one-way valve arranged in the air outlet passage and gradually reduces the caliber. Vertically corresponding to the center axis of the outlet end, at least one through hole is provided between the side wall of the outlet channel and the side wall of the nozzle tube to communicate the outside of the outlet channel with the inside of the nozzle tube, whereby when When the user's exhaled air passes through the nozzle tube, the air from the outside of the air outlet channel is sucked into the nozzle tube to increase the air flow by using the Berlier principle, so that when the airflow blows out of the nozzle tube, enough force is generated to push open the one-way air valve to discharge the exhaled air Of carbon dioxide.

Description

Respiratory assist device

This creation relates to the field of medical equipment, especially respiratory assist devices used to treat respiratory symptoms.

Respiratory aids are breathing equipment commonly used in the treatment of respiratory symptoms. Common types include mask type, head-mounted type, nasal plug type, etc.; among them, general mask-type and head-mounted respiratory assist devices are used to cover The mask body of the patient’s nose is provided with an air inlet tube and an air outlet tube. The air inlet channel of the air inlet tube is provided with an air inlet one-way valve, and the air outlet channel of the air outlet tube is provided with an air outlet one-way valve; The intake pipe is connected to the oxygen supply machine through a hose. When the patient wears a breathing assist device for inhalation, the inhalation creates a negative pressure in the hood, which causes the inlet one-way valve to open and the outlet one-way valve to close, so that the oxygen supplied by the oxygen supply machine passes through the inlet one-way air. The valve enters the hood but does not exit the trachea, and the patient can inhale oxygen; when exhaling, the air intake check valve is closed and the air output check valve is opened due to the positive pressure formed by the exhaled air in the hood. The exhaled carbon dioxide can only be discharged out of the trachea through the one-way valve, but cannot be returned to the oxygen supply through the one-way valve.

As mentioned above, the conventional breathing assistance device must use the airflow force of the patient's exhalation to push open the one-way valve when expelling the exhaled carbon dioxide. However, because the patient's physical strength is usually not as good as the normal healthy state, it may Because the airflow force of the patient's exhalation is not enough to push open the one-way valve of the outflow, carbon dioxide accumulates in the hood. The patient is likely to have many sequelae and affect health due to the high concentration of carbon dioxide in the hood.

In addition, "Continuous Positive Airway Pressure (CPAP)" is also used in the treatment of respiratory symptoms, especially in the treatment of obstructive sleep apnea (OSA). Generally speaking, the conventional continuous positive pressure breathing aid outputs gas when the patient inhales, and supplies it to the user with a constant air pressure to increase the pressure in the patient's respiratory tract, and then deliver the gas into the patient's lungs; On the contrary, when the patient exhales, the gas output is stopped, and the carbon dioxide exhaled by the patient is discharged through the exhaust hole on the mask to avoid excessive carbon dioxide concentration in the mask. However, since the patient does not breathe at a fixed pressure from beginning to end during sleep, when the patient uses a general continuous positive pressure breathing aid during sleep, he often has trouble breathing, so others must cooperate with the patient The breathing condition during sleep controls the pressure provided by the continuous positive pressure breathing aid when the patient inhales, so that the conventional continuous positive pressure breathing aid is inconvenient to use.

Furthermore, the conventional continuous positive pressure breathing aid has a vent hole that will cause the wind pressure to decrease during inhalation, and the wind pressure will increase when the patient exhales, thereby increasing the difficulty of wind pressure control. Although it is known that the amount of air supplied by the host can be adjusted by detecting the patient's breathing condition, however, when the patient's breathing condition changes rapidly, the host must cooperate to rapidly change the speed, which not only accelerates the loss of the host, but also produces excessive noise.

The purpose of this creation is to solve the problem of conventional breathing aids or continuous positive pressure breathing aids, etc., which are likely to be caused by insufficient airflow force in the exhalation of frail patients, so that the one-way valve of the exhalation cannot be opened smoothly, causing carbon dioxide to accumulate in the mask The resulting sequelae and health problems.

The technical means of the breathing assist device of the present invention includes a cover body with an air inlet channel and an air outlet channel communicating with the inner space of the cover body, the air inlet channel is provided with an air inlet one-way valve, and the air outlet The channel is provided with a one-way air outlet valve, wherein a nozzle tube is formed in the air outlet channel axially parallel, and the outlet end of the nozzle tube faces the air outlet one-way valve and gradually reduces its caliber. At the position of the central axis, at least one through hole is provided between the side wall of the air outlet channel and the side wall of the nozzle tube to communicate the outside of the air outlet channel with the inside of the nozzle tube. With the structure, when the user's exhaled air passes through the nozzle tube, the Berlier principle is used to draw the air outside the outlet channel into the nozzle tube to increase the air flow, so that sufficient force is generated when the airflow blows out of the nozzle tube to push away the air. The one-way air valve discharges the exhaled carbon dioxide to avoid the accumulation of carbon dioxide in the cover.

In an embodiment, the air outlet end of the nozzle tube may be flat. By reducing the diameter of the flat-shaped outlet end, the flow rate and pressure of the exhaled air flow through the outlet end are increased, thereby having sufficient force to push the one-way air valve in the outlet air channel.

In another embodiment, the outlet end of the nozzle tube may be tapered. By reducing the diameter of the conical outlet end, the flow rate and pressure of the exhaled air flow through the outlet end are increased, so that it has sufficient force to push the one-way air valve in the outlet air channel.

In one embodiment, an air inlet pipe may be integrally formed with the body of the mask, and the air inlet passage may be formed in the air inlet pipe.

In one embodiment, an air outlet tube may be integrally connected to the mask body of the face mask, and the air outlet channel may be formed in the air outlet tube.

Through the aforementioned structure of the breathing aid device of the present invention, it is not only suitable for general face-mask or head-mounted breathing aids, but also suitable for continuous positive pressure breathing aids and even other breathing aids of the same type. This creation uses a simple structure to amplify the airflow force exhaled by frail patients, so that the exhaled one-way valve can be opened smoothly to completely discharge the exhaled carbon dioxide out of the cover, avoiding excessive carbon dioxide concentration to produce undesirable sequelae and effects health.

The following is a more detailed description of the implementation of this creation with illustrations and component symbols, so that those who are familiar with the art can implement it after studying this manual.

As shown in Figure 1, the preferred embodiment of the breathing assistance device provided by the present invention includes a cover 10, one side of the cover 10 forms a recessed inner space 101, and the outline of the cover 10 can be worn on the human body The position of the snout is formed into an approximate triangle, and elastic bands 26 can be arranged around the periphery of the cover body 10 so as to be worn on the head comfortably and ergonomically (as shown in FIG. 2).

The cover 10 is provided with an air inlet passage 102 and an air outlet passage 103 communicating with the inner space 101, and an air inlet check valve 12 is arranged in the air inlet passage 102, and an outlet air check valve 14 is arranged in the outlet passage 103; wherein , The intake check valve 12 can only be opened in a single direction to provide gas that can only flow from the intake passage 102 to the direction of the inner space 101, but the gas in the inner space 101 cannot flow out through the intake check valve 12; The one-way gas outlet valve 14 can only be opened in a single direction to provide gas that can only flow from the inner space 101 through the gas outlet passage 103, but external gas cannot flow into the inner space 101 through the one-way gas valve 14. The inlet one-way air valve 12 and the air outlet one-way air opening 14 may have the same structure, but are arranged in opposite directions to control the unidirectional flow direction of the airflow. The inlet one-way air valve 12 and the air outlet one-way air opening 14 are all conventional components and are not technical features advocated in this creation. Therefore, only their positions are simply shown in the drawings, and the detailed structure is omitted. Description.

As shown in Figs. 3 and 4, the present invention further forms a nozzle tube 16 axially parallel in the air outlet passage 103 of the cover body 10 in an integrated manner, and the air outlet end 161 of the nozzle tube 16 faces the air outlet one-way valve 14 And the air outlet 162 is gradually reduced in diameter; at a position vertically corresponding to the central axis of the air outlet 161, between the side wall of the air outlet channel 103 and the side wall of the nozzle tube 16 is provided a connection between the outside of the air outlet channel 103 and the nozzle tube 16 At least one through hole 18 inside. More specifically, the outlet end 161 of the nozzle tube 16 may be formed into a flat shape, so that the outlet port 162 of the outlet end 161 is substantially straight or narrow and rectangular. Accordingly, the inner diameter of the nozzle tube 16 is larger than the outlet port. 162 caliber, so when the air flow through the nozzle tube 16 out of the air outlet 162, the speed will increase due to the limitation of space reduction, and according to Bernou’s law, the air flow will be in the radial direction when it passes through the nozzle tube 16 quickly. The lateral pressure is reduced, so that the external air is introduced into the nozzle pipe 16 through the through hole 18 to increase the air flow.

In addition, in the present invention, an air inlet pipe 20 and an air outlet pipe 22 can be integrally formed at different positions of the cover body 10, and the air inlet passage 102 is formed in the air inlet pipe 20, and the air outlet passage 103 is formed in the air outlet pipe. twenty two.

When the breathing aid device of the present invention is used, it can be worn on the user’s head in conjunction with the elastic band 26 arranged on the periphery of the mask body 10 so that the mask body 10 covers the mouth and nose; wherein, the air inlet tube 20 can be connected by a hose. An oxygen machine (not shown in the figure), or an oxygen bag 24 is directly connected to the intake pipe 20 (as shown in Fig. 2). When the user inhales, the inhalation creates a negative pressure in the hood 10 so that the inlet one-way valve 12 is opened and the outlet one-way valve 14 is closed, so that the oxygen supplied by the oxygen supply machine or oxygen bag 24 passes through the intake unit The air valve 12 enters the inner space 101 of the cover 10 but does not exit the air outlet channel 103, and the user can inhale oxygen. When exhaling, the inner space 101 of the hood 10 closes the inlet one-way valve 12 and opens the outlet one-way valve 14 due to the positive pressure formed by the exhaled gas. At this time, the exhaled carbon dioxide can only pass through the outlet one-way The air valve 14 exits the air outlet channel 103 and cannot flow back to the oxygen supply machine or the oxygen bag 24 through the air intake check valve 12. The patient’s physical strength is usually weak, so that the airflow generated by the exhalation may be weak and the airflow rate is small. Therefore, when the weaker and smaller amount of airflow passes through the nozzle tube 16, the external air will be passed through the through hole 18. Introduced into the nozzle pipe 16 to increase the air flow rate. The increased air flow rate enlarges the air flow speed when it flows out of the reduced-diameter outlet 162, so that the blown air flow can push open the air outlet check valve 14 to allow carbon dioxide to be discharged to the outside. Too high concentration of carbon dioxide accumulates in the space inside the cover 10 and affects health.

6 is a schematic cross-sectional view showing the second embodiment of the nozzle tube 16 of the present invention. In the second embodiment, the outlet end 161 of the nozzle tube 16 is formed into a cone shape, such as a cone or pyramid shape, and the outlet end The 161 air outlet can be round or polygonal. The structure of the nozzle tube 16 of the second embodiment also has the effect of increasing the air flow rate and increasing the air flow velocity, so as to ensure that the air flow blown by the frail patient can push open the air outlet one-way air valve 14 to completely discharge the exhaled carbon dioxide.

The above are only used to explain the preferred embodiment of this creation, and are not intended to impose any formal restrictions on this creation. Therefore, any modification or change of this creation made under the same creative spirit , Should still be included in the scope of this creative intention protection.

10: Hood 101: inner space 102: intake channel 103: Exhaust Channel 12: Intake one-way valve 14: Outlet one-way valve 16: nozzle tube 161: Exhausted 162: vent 18: Through hole 20: intake pipe 22: Exhaust pipe 24: oxygen bag 26: Elastic band

Figure 1 is a three-dimensional schematic diagram showing the appearance and structure of the breathing assist device of this creation; Figure 2 is a schematic diagram showing the state of the breathing assist device of the invention when worn on the user; 3 is a schematic cross-sectional view showing the first embodiment along the direction 3-3 of FIG. 1; 4 is a schematic cross-sectional view showing the first embodiment along the direction 4-4 of FIG. 1; Fig. 5 is a schematic diagram showing the state of sucking in external air when the air is blown out of the nozzle tube in the first embodiment of the present creation; and Fig. 6 is a schematic cross-sectional view showing the second embodiment of the nozzle tube of the present invention.

102: intake channel

103: Exhaust Channel

12: Intake one-way valve

14: Outlet one-way valve

16: nozzle tube

161: Exhausted

162: vent

18: Through hole

20: intake pipe

22: Exhaust pipe

Claims (5)

A breathing assist device includes a cover body, the cover body has an air inlet channel and an air outlet channel communicating with the inner space of the cover body, the air inlet channel is provided with an air inlet one-way valve, and the air outlet channel is provided with a The one-way air outlet valve is characterized by: A nozzle tube is formed axially in parallel in the air outlet channel, and an air outlet end of the nozzle tube faces the air outlet one-way valve and gradually reduces its caliber. At a position perpendicular to the center axis of the air outlet end, the air outlet channel At least one through hole is provided between the side wall and the side wall of the nozzle tube to communicate the outside of the air outlet channel with the inside of the nozzle tube. The breathing assistance device according to claim 1, wherein the air outlet end of the nozzle tube is flat. The breathing assist device according to claim 1, wherein the air outlet end of the nozzle tube is tapered. The breathing assist device according to any one of claims 1 to 3, wherein the cover body is integrally formed with an air inlet pipe, and the air inlet passage is formed in the air inlet pipe. The breathing assist device according to any one of claims 1 to 3, wherein the cover body is integrally connected to an air outlet tube, and the air outlet channel is formed in the air outlet tube.

Images