TWM565026U - Positive pressure breathing apparatus - Google Patents

Abstract

A positive pressure breathing apparatus includes a cover, a micro pump, and a processor. The cover body fixes the user's face and corresponds to the airway opening to form a closed space. The micro pump is coupled to the cover body and communicates with the outside of the cover body, and the processor is electrically connected to the micro pump. When the processor transmits a start control signal to the micro pump, the micro pump is activated according to the start control signal, and the external air is transmitted into the closed space to form a positive pressure airflow to be injected into the respiratory channel of the user. A pressure detector is further disposed in the enclosed space to detect the pressure of the enclosed space, and the processor determines the breathing state of the user and adjusts the air pressure output of the micro pump.

Description

Positive pressure breathing apparatus

This case relates to a positive pressure breathing apparatus, and more particularly to a positive pressure breathing apparatus that uses a micropump to produce a positive pressure airflow.

Currently, for patients with moderate to severe sleep apnea (OSA), the mainstream medical therapy is to give a positive positive airway pressure (CAPA) through a positive pressure breathing apparatus. Expand the patient's respiratory tract to achieve the effect of breathing. This treatment can effectively improve the respiratory abnormalities including Apnea and Hypopnea, effectively improve the sleep quality of patients, and further reduce the cardiovascular disease and the rate of fan in the brain.

Please refer to FIG. 1 , which is a schematic diagram of the use of a positive pressure breathing apparatus in the prior art. The positive pressure breathing apparatus 200 on the market includes a body 210 containing a vacuum pump. The volume of the body 210 is approximately the size of a general notebook, and a breathing mask 214 is connected through a ventilation hose 212. Patients with apnea must wear a respiratory mask 214 throughout their sleep and keep the body 210 in an activated state. The vacuum pump in the body 210 continuously permeates the patient's respiratory tract through the venting hose 212 with positive pressure air between 4 cm H ₂ O and 20 cm H ₂ O.

However, the positive pressure breathing apparatus 200 of the prior art has the disadvantages of wearing discomfort and inconvenience in carrying out due to construction and volume factors. Since the positive pressure breathing apparatus 200 needs to introduce the gas into the breathing mask 214 through the ventilation hose 212, the user needs to fix the sleeping posture, and the user's action during sleep is prevented from being pressed to the ventilation hose 212, causing the gas to be unsatisfactory or stopping the supply of gas. Causes the patient to have a poor sleep posture and squeezes the ventilation hose 212, which is difficult to enter deep sleep, Among patients receiving positive pressure breathing therapy, most people have difficulty maintaining a permanent wearer 200 for a long period of time during sleep every night, and the average wearer's average wearing time per night is much smaller than the doctor's recommended wearing time. . The main cause of the patient's inability to wear for long-term wear or wear all night is the wearing discomfort caused by the positive pressure breathing apparatus 200. A patient wearing the positive pressure breathing apparatus 200 not only has difficulty turning over during sleep, but must also endure the feeling of connecting a foreign body to the body. In addition, the patient must carry the entire positive pressure breathing apparatus 200 when going out to play, and must choose to have a power supply overnight, which is very inconvenient for those who need to go out to stay overnight or long-haul flights.

In view of the above-mentioned lack of the positive pressure breathing apparatus 200, the patient often interrupts the treatment and affects the treatment effect, and improves the comfort and portability of the positive pressure breathing apparatus 200, which is urgent and necessary.

The present invention provides an improved positive pressure breathing apparatus that directly couples a micropump to a cover, replacing the conventional pressure breathing apparatus with a ventilating hose connecting the structure of the breathing mask and the vacuum pump. The micropump has sufficient air pressure output value to replace the traditional vacuum pump, and the air outside the cover body is driven into the cover body to form a positive pressure air flow, thereby eliminating the use of the ventilation hose and reducing the volume of the overall device. In this way, the discomfort of wearing a positive pressure breathing device during sleep can be reduced, and the portability of the positive pressure breathing device can be improved.

A generalized embodiment of a positive pressure breathing apparatus of the present invention includes a cover, a micropump, and a processor. Wherein, the cover body is fixed to the facial airway opening of the user to form a closed space; the micro pump is coupled to the cover body and communicates with the closed space and the outside of the cover body; the processor is electrically connected to the micro pump. When the processor transmits a start control signal to the micro pump, the micro pump is activated according to the start control signal, and the external air is transmitted into the closed space to form the positive pressure airflow to the respiratory tract of the user.

In a preferred embodiment of the present invention, the micropump is a piezoelectrically actuated gas pump. The piezoelectric The actuated gas pump is composed of an air inlet plate, a resonance plate and a piezoelectric actuator, and is driven to resonate the piezoelectric actuator with the movable portion of the resonance piece, so that an air flow is made by the air inlet hole of the air intake plate. The inlet is collected through the busbar hole of the air inlet plate to the confluence chamber of the air inlet plate, and then flows through the hollow hole of the resonance piece to form a positive pressure air flow transmitted downward. Wherein, the piezoelectric actuator comprises a suspension plate, an outer frame surrounding the suspension plate, at least one bracket connecting the suspension plate and the outer frame, and a piezoelectric element. The piezoelectric element is attached to the surface of the suspension plate, and the suspension plate is driven to bend and vibrate after a voltage is applied.

In another preferred embodiment of the present invention, the positive pressure breathing device further includes a pressure detector disposed in the enclosed space of the cover body to detect the pressure of the closed space and to detect The measured pressure value is transmitted to the processor. The processor compares the detected pressure value with a preset pressure value, and generates a pressure control signal according to the comparison result to be sent to the micro pump, thereby regulating the air pressure output of the micro pump, so that the pressure of the closed space conforms to the preset pressure value. Further, the processor continuously receives a plurality of detected pressure values from the pressure detector and collects the operations to obtain a breathing state of the user. If the processor determines that the breathing state is an inhalation exhalation alternate point, the processor generates a pressure regulation signal to be transmitted to the micropump to lower the air pressure output of the micro pump accordingly. If the processor determines that the breathing state is an abnormal state, the processor generates a pressure regulation signal to be transmitted to the micro pump to adjust the air pressure output of the micro pump accordingly.

100‧‧‧ Positive pressure breathing apparatus

110‧‧‧ head fixture

200‧‧‧ positive pressure respirator

210‧‧‧ body

212‧‧‧Ventilation hose

214‧‧‧ breathing mask

1‧‧‧ Cover

11‧‧‧Enclosed space

2‧‧‧Micropump

21‧‧‧Air intake plate

21a‧‧‧Air intake

21b‧‧‧ bus bar hole

21c‧‧ ‧ confluence chamber

22‧‧‧Resonance film

22a‧‧‧ hollow hole

22b‧‧‧movable department

22c‧‧‧ fixed department

23‧‧‧ Piezoelectric Actuator

23a‧‧‧suspension plate

231a‧‧‧ first surface

232a‧‧‧second surface

23b‧‧‧Front frame

231b‧‧‧ matching surface

232b‧‧‧ lower surface

23c‧‧‧ bracket

23d‧‧‧Piezoelectric components

23e‧‧‧ gap

23f‧‧‧ convex

231f‧‧‧ convex surface

24‧‧‧Insulation sheet

25‧‧‧Conductor

26‧‧‧Case space

3‧‧‧ Processor

4‧‧‧ Pressure detector

5‧‧‧Power Module

G‧‧‧ Chamber spacing

Figure 1 is a schematic view showing the use of a positive pressure breathing apparatus in the prior art.

Figure 2 is a block diagram of a positive pressure breathing apparatus in the preferred embodiment of the present invention.

Figure 3 is a schematic view showing the use of a positive pressure breathing apparatus in the preferred embodiment of the present invention.

Fig. 4A is a schematic exploded view of the micropump of the present invention.

Figure 4B is an exploded perspective view of the micropump of the present case at another angle.

Figure 5A is a schematic cross-sectional view of the micropump of the present invention.

5B to 5D are schematic views of the operation of the micropump of the present invention.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various aspects, and is not to be construed as a limitation.

Please refer to FIG. 2 and FIG. 3 simultaneously. FIG. 2 is a block diagram of a positive pressure breathing apparatus in a preferred embodiment of the present invention, and FIG. 3 is a schematic view showing the use of a positive pressure breathing apparatus in the preferred embodiment of the present invention. As shown, in the preferred embodiment of the present invention, the positive pressure breathing apparatus 100 includes a cover 1, a micro pump 2, a processor 3, a pressure detector 4, and a power module 5. The cover 1 further includes a head fixing device 110. The cover body 1 is fixed to the face of the user and corresponds to the airway opening thereof to form a closed space 11. The micropump 2 is embedded and joined to the cover 1 for introducing the outside air of the cover 1 into the closed space 11. The micropump 2 can be a piezoelectrically actuated gas pump, the structure and actuation of which will be detailed later. The processor 3 is electrically connected to the micropump 2 and the pressure detector 4. The processor 3 can be integrated with the micropump 2 as a module to be embedded in the cover 1 or separately from the micropump 2 and connected by a wire.

The pressure detector 4 is disposed in the enclosed space 11 of the cover 1 and electrically connected to the processor 3. The pressure detector 4 can be integrated with the micropump 2 as a module to be embedded in the cover 1 or separately disposed inside the cover 1 . The pressure detector 4 is for detecting the pressure of the closed space 11 and transmitting a detected pressure value to the processor 3.

The power module 5 is configured to provide stored energy, output power, and provide power to the processor 3, so that the processor 3 can control the startup of the micropump 2, and can be connected with an external power supply. The device (not shown) conducts electrical energy and receives electrical energy for storage. The power supply device can transmit electrical energy to the power module 5 through a wired conduction manner, or deliver the electrical energy to the power module 5 in a wireless conduction manner. Limited.

When the positive pressure breathing apparatus 100 of the present invention is activated by operation, the processor 3 transmits a start control signal to the micro pump 2. The micropump 2 is activated according to the start control signal to transmit external air into the enclosed space 11 to form a positive pressure air flow.

In one embodiment of the present invention, the processor 3 receives the detected pressure value from the pressure detector 4 and compares the detected pressure value with a preset pressure value. Preferably, the preset pressure value is any value preset by the user between 4 cm H ₂ O and 20 cm H ₂ O. If the comparison result is that the detected pressure value has an error with a preset pressure value, the processor 3 generates a pressure control signal according to the error amount and transmits the pressure control signal to the micro pump 2, thereby slightly regulating the air pressure output of the micro pump 2 It is ensured that the pressure in the closed space 11 conforms to the preset pressure value, thereby guiding the pressure error.

In another embodiment of the present invention, the processor 3 continuously receives a plurality of detected pressure values from the pressure detector 4 and converts the detected pressure values into an airflow waveform. The processor 3 analyzes the breathing state of the user based on the airflow waveform and predicts whether any respiratory abnormality events are imminent. The respiratory abnormality event includes, but is not limited to, obstructive breathing suspension, shallow breathing, and snoring. When the processor 3 determines that the breathing state is an inhalation exhalation alternate point, a pressure regulation signal is generated to be delivered to the micropump 2 according to a preset, and the air pressure output of the micropump 2 is lowered. Preferably, the amount of reduction can be preset to 1 cmH ₂ O to 3 cm H ₂ O. In addition, when the processor 3 determines that the breathing state is an abnormal state, that is, the breathing state is predicted to be a patient's impending respiratory abnormality event, the processor 3 generates a pressure regulation signal to the micropump 2 according to a preset setting. Increase the pressure output of the micropump 2. Preferably, the amount of adjustment can be 1 cm H ₂ O.

Referring to Figures 4A to 5A, the above-mentioned micropump 2 can be a piezoelectrically actuated gas pump with a maximum air pressure output of up to 350 mmHg (approximately equal to 476 cm H ₂ O), which can satisfy positive pressure breathing therapy. Air pressure output requirement between 4cmH ₂ O and 20cmH ₂ O. The piezoelectric actuator gas pump includes an air inlet plate 21, a resonant plate 22, a piezoelectric actuator 23, an insulating sheet 24, and a conductive sheet 25 stacked in sequence; the air inlet plate 21 has at least An air inlet hole 21a, at least one bus bar hole 21b, and a bus bar chamber 21c. The number of the air inlet hole 21a and the bus bar hole 21b are the same. In this embodiment, the air inlet hole 21a and the bus bar hole 21b are The number of four is exemplified, and is not limited thereto; the four intake holes 21a pass through the four bus bar holes 21b, respectively, and the four bus bar holes 21b merge into the confluence chamber 21c.

The resonator piece 22 is assembled to the air inlet plate 21 through a bonding manner. The resonator piece 22 has a hollow hole 22a, a movable portion 22b and a fixing portion 22c. The hollow hole 22a is located at the center of the resonance plate 22. And corresponding to the confluence chamber 21c of the air inlet plate 21, and a region provided around the hollow hole 22a and opposed to the confluence chamber 21c is a movable portion 22b, and is provided on the outer peripheral portion of the resonance piece 22 to be attached. The air intake plate 21 is a fixing portion 22c.

The piezoelectric actuator 23 includes a suspension plate 23a, an outer frame 23b, at least one bracket 23c, a piezoelectric element 23d, at least one gap 23e and a convex portion 23f. The suspension plate 23a has a first surface. 231a and a second surface 232a opposite to the first surface 231a, the outer frame 23b is disposed around the periphery of the suspension plate 23a, and the outer frame 23b has a pair of matching surfaces 231b and a lower surface 232b, and is connected to the suspension through at least one bracket 23c. Between the plate 23a and the outer frame 23b, a supporting force for elastically supporting the suspension plate 23a is provided, wherein the gap 23e is a gap between the suspension plate 23a, the outer frame 23b and the bracket 23c for air to pass therethrough.

In addition, the first surface 231a of the suspension plate 23a has a convex portion 23f. In the present embodiment, the convex portion 23f passes through the etching process of the peripheral edge of the convex portion 23f and adjacent to the bracket 23c to be recessed to suspend the suspension. The convex portion 23f of the plate 23a is higher than the first surface 231a to form a stepped structure.

Further, as shown in FIG. 5A, the suspension plate 23a of the present embodiment is formed by press forming to be recessed downward, and the depression distance thereof can be formed by at least one bracket 23c between the suspension plate 23a and the outer frame 23b. Adjusted so that the convex surface 231f of the convex portion 23f on the suspension plate 23a and the combined surface 231b of the outer frame 23b form a non-coplanar, that is, the convex surface 231f of the convex portion 23f will be lower than the outer frame 23b The surface 231b is assembled, and the second surface 232a of the suspension plate 23a is lower than the lower surface 232b of the outer frame 23b, and the piezoelectric element 23d is attached to the second surface 232a of the suspension plate 23a, and is disposed opposite to the convex portion 23f. After the driving voltage is applied, the electrical component 23d is deformed by the piezoelectric effect, thereby driving the suspension plate 23a to bend and vibrate; a small amount of adhesive is applied to the assembled surface 231b of the outer frame 23b to cause piezoelectric deformation by hot pressing. The actuator 23 is attached to the fixing portion 22c of the resonance piece 22, so that the piezoelectric actuator 23 is combined with the resonance piece 22.

In addition, the insulating sheet 24 and the conductive sheet 25 are both thin frame-shaped sheets, which are sequentially stacked under the piezoelectric actuator 23. In the present embodiment, the insulating sheet 24 is attached to the lower surface 232b of the outer frame 23b of the piezoelectric actuator 23.

Continuing to refer to FIG. 5A, the air intake plate 21 of the micropump 2, the resonant plate 22, the piezoelectric actuator 23, the insulating sheet 24, and the conductive sheet 25 are sequentially stacked and combined, wherein the first surface 231a of the suspension plate 23a is suspended. Forming a chamber spacing g with the resonator piece 22, the chamber spacing g will affect the transmission effect of the micropump 2, so maintaining a fixed chamber spacing g is important for providing stable transmission efficiency for the micropump 2. . The micropump 2 system of the present invention uses a stamping method for the suspension plate 23a to be recessed downward so that both the first surface 231a of the suspension plate 23a and the assembly surface 231b of the outer frame 23b are non-coplanar, that is, the suspension plate. The first surface 231a of the 23a will be lower than the assembly surface 231b of the outer frame 23b, and the second surface 232a of the suspension plate 23a is lower than the lower surface 232b of the outer frame 23b, so that the suspension plate 23a of the piezoelectric actuator 23 is recessed. A space is formed with the resonator piece 22 to form an adjustable chamber spacing g, which is directly improved by adopting a structure in which the suspension plate 23a of the piezoelectric actuator 23 is formed into a recessed space to form a chamber space 26, and thus The required chamber spacing g can be achieved by adjusting the depression distance of the suspension plate 23a of the piezoelectric actuator 23, which effectively simplifies the structural design of the adjustment chamber spacing g. It also achieves the advantages of simplifying the process and shortening the process time.

5B to 5D are diagrams showing the operation of the micropump 2 shown in FIG. 5A. Referring to FIG. 6B, the piezoelectric element 23d of the piezoelectric actuator 23 is subjected to a driving voltage to generate a deformation-driven suspension plate. 23a is displaced downward, at which time the volume of the chamber space 26 is increased, and a negative pressure is formed in the chamber space 26, so that the air in the confluence chamber 21c is taken into the chamber space 26, and the resonator piece 22 is subjected to the resonance principle. The influence is synchronously displaced downward, which increases the volume of the confluence chamber 21c, and due to the relationship of the air in the confluence chamber 21c entering the chamber space 26, the confluence chamber 21c is also in a negative pressure state, and then passes through the busbar. The hole 21b and the air inlet 21a suck air into the confluence chamber 21c; referring to FIG. 6C, the piezoelectric element 23d drives the suspension plate 23c to move upward, compressing the chamber space 26, forcing the air in the chamber space 26 to pass. The gap 23e is transmitted downward to achieve the effect of transmitting air. At the same time, the resonator piece 22 is also displaced upward by the suspension plate 23a due to resonance, and the air in the confluence chamber 21c is synchronously pushed to move into the chamber space 26; Figure 6D, when When the floating plate 23c is driven downward, the resonance piece 22 is also driven to be displaced downward, and the resonance piece 22 at this time will move the air in the compression chamber space 26 toward the gap 23e, and lift the inside of the confluence chamber 21c. The volume allows the air to continuously converge in the confluence chamber 21c through the intake port 21a and the bus bar hole 21b, and the above steps are continuously repeated, so that the micropump 2 can continuously enter the air from the intake port 21a, and then It is transported downward by the gap 23e, and the effect of transmitting air to the closed space 11 to form a positive pressure airflow is achieved.

In summary, in the present case, the micropump 2 is directly coupled to the cover body 1, and the air outside the cover body 1 is driven into the cover body 1 by the micropump 2 to form a positive pressure airflow, which is softer than the conventional technique. The tube 212 is connected in series with the structure of the vacuum mask in the breathing mask 214 and the body 210. In this case, the use of the ventilation hose 212 is eliminated and the volume of the overall device is reduced. In this way, the discomfort caused by wearing the conventional positive pressure breathing apparatus 200 during sleep can be alleviated, and the portability of the positive pressure breathing apparatus can be improved, and the patient can continue to wear for a long time without interrupting the treatment. With industrial use value.

This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

Claims (10)

A positive pressure breathing device for supplying a positive pressure airflow to a user's respiratory tract, the positive pressure breathing device comprising: a cover for fixing to a user's face and corresponding to the respiratory passage opening thereof, and forming a closed space; Pumping, coupled to the cover and communicating with the outside of the cover; and a processor electrically connected to the micropump; wherein when the processor transmits a start control signal to the micropump, the micropump The startup control signal is activated according to the startup control signal, and the external gas is transmitted into the closed space to form the positive pressure airflow. The positive pressure breathing apparatus of claim 1, wherein the micropump is a piezoelectrically actuated gas pump. The positive pressure breathing apparatus of claim 2, wherein the piezoelectric actuation gas pump comprises: an air inlet plate having at least one air inlet hole, at least one bus bar hole, and a convergence chamber, wherein the at least one The air inlet hole is for introducing an air flow, the bus bar hole corresponding to the air inlet hole, and the air flow guiding the air inlet hole is converged to the convergence flow chamber; a resonance piece having a hollow hole corresponding to the air flow chamber, and the hollow hole Surrounding a movable portion; and a piezoelectric actuator disposed corresponding to the resonant plate; wherein a gap is formed between the resonant plate and the piezoelectric actuator to form a chamber space for the pressure When the electric actuator is driven, the airflow is introduced from the at least one air inlet hole of the air intake plate, and is collected into the airflow chamber through the at least one bus bar hole, and then flows through the hollow hole of the resonance plate, The piezoelectric actuator generates a resonant transmission airflow with the movable portion of the resonant plate. The positive pressure breathing apparatus of claim 3, wherein the piezoelectric actuator comprises: a suspension plate having a first surface and a second surface, the first surface having a convex An outer frame disposed around the outer side of the suspension plate and having a set of matching surfaces; at least one bracket connected between the suspension plate and the outer frame to provide elastic support for the suspension plate; and a piezoelectric An element attached to the second surface of the suspension plate for applying a voltage to drive the suspension plate to bend vibration; wherein the at least one bracket is formed between the suspension plate and the outer frame, and the suspension plate is The first surface and the assembled surface of the outer frame are formed in a non-coplanar structure, and the first surface of the suspension plate is maintained at a cavity spacing from the resonant plate. The positive pressure breathing apparatus of claim 4, wherein the piezoelectrically actuated gas pump comprises: a conductive sheet, an insulating sheet, wherein the air inlet plate, the resonant plate, the piezoelectric actuator, the insulating The sheet and the conductive sheet are stacked in sequence. The positive pressure breathing apparatus of claim 1, further comprising a pressure detector disposed in the closed space of the cover body to detect the pressure of the closed space to generate a detected pressure value and transmit to the processing The processor transmits a pressure control signal to the micro pump according to the detected pressure value and a preset pressure value, and according to the comparison result, thereby regulating the air pressure output of the micro pump to make the enclosed space The pressure corresponds to the preset pressure value. The positive pressure breathing apparatus of claim 1, further comprising a pressure detector disposed in the closed space of the cover body to detect the pressure of the closed space to generate a plurality of detected pressure values for transmission to the processing The processor analyzes a breathing state of the user according to the detected pressure values, and generates a pressure regulation signal according to the breathing state to be transmitted to the micro pump to increase or decrease the pressure output of the micro pump. . The positive pressure breathing apparatus of claim 7, wherein when the processor determines that the breathing state is an inhalation exhalation alternate point, generating the pressure regulation signal to the micropump to lower the micropump The air pressure output. The positive pressure breathing apparatus of claim 7, wherein when the processor determines that the breathing state is an abnormal state, generating the pressure regulation signal to the micro pump to increase the air pressure output of the micro pump. The positive pressure breathing apparatus of claim 1, further comprising a power module electrically connected to the processor to provide power.