JP2023157178A - Liquid discharge device and liquid discharge method - Google Patents

Abstract

To provide a liquid discharge device, etc. that can more accurately discharge liquid to a predetermined part in a nasal cavity.SOLUTION: A liquid discharge device 10 comprises: a first nozzle 14 for discharging liquid when it is inserted into one nasal cavity 3; a second nozzle 16 for generating an air flow flowing to the other nasal cavity 4 from the one nasal cavity 3 by sucking air when it is inserted into the other nasal cavity 4; and a state detection unit 40 for detecting the state of the air sucked into the second nozzle 16.SELECTED DRAWING: Figure 2

Description

The present invention relates to a liquid ejection device and a liquid ejection method for ejecting liquid to a user.

2. Description of the Related Art Liquid ejection devices and the like for ejecting liquid into a user's nasal cavity are known. As an example of a liquid ejection device, etc., Patent Document 1 discloses that a gas flow entrained with a drug is applied to one of the patient's nostrils with a driving pressure such that it passes around the rear part of the nasal septum and exits from the patient's other nostril. A nasal delivery device is disclosed that includes a delivery unit for delivery into the nares.

Patent No. 4543553

However, the nasal delivery device of Patent Document 1 has a problem in that it is difficult to discharge liquid to a predetermined site within the nasal cavity.

The present invention is intended to solve the above-mentioned problems, and its purpose is to provide a liquid ejection device and the like that can more accurately eject liquid to a predetermined site within the nasal cavity.

To achieve the above object, a liquid ejection device according to one aspect of the present invention includes a first nozzle that ejects liquid when inserted into one nasal cavity, and a first nozzle that ejects air when inserted into the other nasal cavity. A second nozzle that generates an airflow flowing from the one nasal cavity to the other nasal cavity when inhaled, and a state detection section that detects the state of the air sucked into the second nozzle.

According to this aspect, since the state of the air sucked into the second nozzle can be detected, the liquid can be discharged based on the state of the air sucked into the second nozzle, and airflow can be generated. Therefore, the liquid can be more accurately discharged to a predetermined site within the nasal cavity.

For example, in the liquid ejection device according to one aspect of the present invention, the state detection section may include a pressure sensor that detects the pressure of the air sucked into the second nozzle.

According to this aspect, since the pressure of the air sucked into the second nozzle can be detected, the liquid can be discharged based on the pressure of the air sucked into the second nozzle, and an airflow can be generated. Therefore, the liquid can be more accurately discharged to a predetermined site within the nasal cavity.

For example, in the liquid ejection device according to one aspect of the present invention, the state detection section may include a humidity sensor that detects the humidity of the air sucked into the second nozzle.

According to this aspect, since the humidity of the air sucked into the second nozzle can be detected, the liquid can be discharged based on the humidity of the air sucked into the second nozzle, and an airflow can be generated. Therefore, the liquid can be more accurately discharged to a predetermined site within the nasal cavity.

For example, in the liquid ejection device according to one aspect of the present invention, the state detection section may include a temperature sensor that detects the temperature of the air sucked into the second nozzle.

According to this aspect, since the temperature of the air sucked into the second nozzle can be detected, the liquid can be discharged based on the temperature of the air sucked into the second nozzle, and an airflow can be generated. Therefore, the liquid can be more accurately discharged to a predetermined site within the nasal cavity.

For example, the liquid ejection apparatus according to one aspect of the present invention may further include an ejection control section that controls ejection of the liquid from the first nozzle based on a detection result of the state detection section.

According to this aspect, the ejection of the liquid from the first nozzle can be controlled based on the detection result of the state detection section, so the liquid can be ejected more accurately to a predetermined site within the nasal cavity.

For example, the liquid ejection device according to one aspect of the present invention may further include an airflow control section that controls the airflow based on the detection result of the state detection section.

According to this aspect, since the airflow can be controlled based on the detection result of the state detection section, the liquid can be more accurately discharged to a predetermined site within the nasal cavity.

For example, in the liquid ejection device according to one aspect of the present invention, the second nozzle is inserted into the other nasal cavity, and the liquid is ejected from the first nozzle inserted into the one nasal cavity. The device may further include a liquid detection unit that sucks the liquid and detects the liquid sucked into the second nozzle.

According to this aspect, if no liquid is detected by the liquid detection unit, it can be presumed that the liquid has adhered to a predetermined site within the nasal cavity. Moreover, when liquid is detected by the liquid detection unit, it can be estimated that the liquid is not attached to a predetermined site within the nasal cavity. In this way, it is possible to estimate whether or not the liquid has adhered to a predetermined site within the nasal cavity, making it possible to more accurately discharge the liquid to the predetermined site within the nasal cavity.

For example, in the liquid ejection device according to one aspect of the present invention, the time elapses from when the first nozzle ejects the liquid until when the liquid detection unit detects the liquid sucked into the second nozzle. The device may further include a time measurement unit that measures time.

According to this aspect, it is possible to measure the time from when the first nozzle discharges the liquid until the liquid detection section detects the liquid, so the speed of the airflow, etc. can be adjusted based on the time, and the speed of the airflow, etc. By adjusting the amount, the liquid can be more accurately discharged to a predetermined site within the nasal cavity.

For example, the liquid ejection device according to one aspect of the present invention may further include a calculation unit that calculates a distance by multiplying the speed of the airflow and the time measured by the time measurement unit.

According to this aspect, the distance can be calculated by multiplying the speed of the airflow by the time measured by the time measuring section, so the speed of the airflow, etc. can be adjusted based on the distance, and the speed of the airflow, etc. can be adjusted. This allows the liquid to be more accurately ejected to a predetermined site within the nasal cavity.

For example, the liquid ejection device according to one aspect of the present invention may further include an airflow control section that controls the airflow based on the distance calculated by the calculation section.

According to this aspect, the airflow can be controlled based on the distance calculated by multiplying the speed of the airflow by the time measured by the time measuring section, and by controlling the airflow, the liquid can be directed to a predetermined site in the nasal cavity. can be dispensed more accurately.

In order to achieve the above object, a liquid ejection method according to one aspect of the present invention includes a ejection step of ejecting a liquid from a first nozzle inserted into one nasal cavity, and a first nozzle inserted into the other nasal cavity. a generating step of generating an airflow flowing from the one nasal cavity to the other nasal cavity by sucking air into a second nozzle; and a detecting step of detecting the state of the air sucked into the second nozzle. Equipped with

According to this aspect, the same effects as those of the liquid ejection device described above are achieved.

Note that the present invention can be realized not only as a liquid ejection device including such a characteristic processing section, but also as a control method in which steps are processes executed by the characteristic processing section included in the liquid ejection device. It can be realized. Further, it can also be realized as a program for causing a computer to function as a characteristic processing section included in a liquid ejection device or a program for causing a computer to execute a characteristic step included in a control method. It goes without saying that such programs can be distributed via computer-readable non-transitory recording media such as CD-ROMs (Compact Disc-Read Only Memory) and communication networks such as the Internet. .

According to the liquid ejection device and the like according to one aspect of the present invention, liquid can be ejected more accurately to a predetermined site within the nasal cavity.

FIG. 1 is a perspective view showing a liquid ejection device according to a first embodiment. FIG. 2 is a schematic diagram showing the liquid ejection device of FIG. 1. FIG. 3 is a block diagram showing the functional configuration of the liquid ejecting device of FIG. 1. As shown in FIG. FIG. 4 is a flowchart showing an example of the operation of the liquid ejection device of FIG. FIG. 5 is a schematic diagram showing a liquid ejection device according to the second embodiment. FIG. 6 is a block diagram showing the functional configuration of the liquid ejection device of FIG. 5. As shown in FIG. FIG. 7 is a flowchart illustrating an example of the operation of the liquid ejecting device shown in FIG. FIG. 8 is a first explanatory diagram for explaining an example of the operation of the liquid ejecting device of FIG. 5. FIG. FIG. 9 is a second explanatory diagram for explaining an example of the operation of the liquid ejecting device of FIG. 5. FIG. FIG. 10 is a third explanatory diagram for explaining an example of the operation of the liquid ejecting device of FIG. 5. FIG. FIG. 11 is a block diagram showing the functional configuration of a liquid ejection device according to the third embodiment. FIG. 12 is a flowchart showing an example of the operation of the liquid ejection device of FIG. 11.

Hereinafter, embodiments of the present invention will be described in detail using the drawings. Note that the embodiments described below are all inclusive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components, steps, order of steps, etc. shown in the following embodiments are merely examples, and do not limit the present invention. Further, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims will be described as arbitrary constituent elements.

(First embodiment)
FIG. 1 is a perspective view showing a liquid ejection device 10 according to the first embodiment. FIG. 2 is a schematic diagram showing the liquid ejecting device 10 of FIG. 1. 1 and 2, the width direction (horizontal direction) of the liquid ejection device 10 is the X-axis direction, the depth direction (front-back direction) of the liquid ejection device 10 is the Y-axis direction, and the height of the liquid ejection device 10 is The direction (vertical direction) will be explained as the Z-axis direction. Further, in FIG. 2, the main body portion 12, the first nozzle 14, and the second nozzle 16 are shown in cross section.

The liquid ejection device 10 is a nasal spray dispenser for ejecting liquid into the nasal cavity 2 of the user 1 (see the two-dot chain line in FIG. 2). For example, the liquid ejection device 10 is a nasal delivery device that ejects an aerosol and delivers the aerosol to the nasal cavity 2 of the user 1 . For example, the liquid discharged by the liquid discharge device 10 is a chemical liquid or the like, and includes an aerosol. The nasal cavity 2 includes one nasal cavity 3 and the other nasal cavity 4, and the one nasal cavity 3 and the other nasal cavity 4 communicate with each other. As shown in FIGS. 1 and 2, the liquid ejection device 10 includes a main body 12, a first nozzle 14, a second nozzle 16, an ejection section 18, a suction section 20, and a state detection section 40. , a liquid detection section 22, a time measurement section 24, an operation reception section 26, a control section 28, and a power supply section 30.

Also, here, aerosol generally refers to a state in which fine solid or liquid particles are suspended in the air, but their visibility and color vary; for example, fog, smoke, dust, etc. are also considered aerosols. It is a type of microorganism, and its particle size is thought to be about 0.001 μm to 100 μm. In this embodiment, in addition to the liquid ejection described above, a similar effect can be obtained even if the liquid is ejected as an aerosol.

The main body portion 12 is a member that connects the first nozzle 14 and the second nozzle 16. In this embodiment, the main body portion 12 is formed in the shape of a hollow rectangular parallelepiped.

The first nozzle 14 discharges liquid while being inserted into one nasal cavity 3. In this embodiment, the first nozzle 14 discharges the liquid discharged from the discharge section 18. For example, the liquid discharged from the first nozzle 14 is in the form of mist. The first nozzle 14 protrudes from the main body 12. The first nozzle 14 has a cylindrical shape, and the space inside the first nozzle 14 communicates with the space inside the main body 12 .

The second nozzle 16 generates an airflow flowing from one nasal cavity 3 to the other nasal cavity 4 by inhaling air while being inserted into the other nasal cavity 4 (see the dotted arrow in FIG. 2). In the present embodiment, the second nozzle 16 is inserted into the other nasal cavity 4 and the suction unit 20 sucks the air, thereby sucking air in the nasal cavity 2 from one nasal cavity 3 to the other nasal cavity 4. Generates an airflow that flows through the air. In this embodiment, the second nozzle 16 can suck in the liquid discharged from the first nozzle 14 inserted into one nasal cavity 3 while being inserted into the other nasal cavity 4 . In this embodiment, the liquid discharged from the first nozzle 14 inserted into one nasal cavity 3 and not adhering to the nasal cavity 2 is carried by the airflow generated by the second nozzle 16 to the other nasal cavity. 4 is sucked into the second nozzle 16 inserted into the second nozzle 16. The second nozzle 16 protrudes from the main body 12 and is provided alongside the first nozzle 14. The second nozzle 16 has a cylindrical shape, and the space inside the second nozzle 16 communicates with the space inside the main body 12 .

The discharge unit 18 is a discharge machine that holds liquid and discharges the held liquid. For example, a flow path (not shown) through which the liquid discharged from the discharge part 18 passes is formed between the discharge part 18 and the first nozzle 14, and the liquid discharged from the discharge part 18 is It is discharged from the first nozzle 14 through the flow path. In this embodiment, the discharge part 18 is housed in the main body part 12. Note that, for example, the discharge section 18 may be accommodated in the first nozzle 14. For example, the discharge section 18 includes a cartridge (not shown) and a heater chip (not shown) for discharging the liquid stored in the cartridge. For example, the ejection unit 18 ejects a predetermined amount (for example, about several tens of microliters) of a mist liquid using a thermal inkjet method.

The suction unit 20 is a suction machine that sucks air. For example, a flow path (not shown) is formed between the suction unit 20 and the second nozzle 16, and the air in the nasal cavity 2 is transferred to the second nozzle by the suction unit 20 sucking air. It is sucked into the nozzle 16. In this embodiment, the suction section 20 is housed in the main body section 12. Note that, for example, the suction section 20 may be housed in the second nozzle 16. For example, the suction unit 20 includes a fan (not shown) and a motor (not shown) that rotates the fan.

The state detection unit 40 detects the state of the air sucked into the second nozzle 16. In this embodiment, the state detection unit 40 detects the pressure of the air sucked into the second nozzle 16 and the humidity of the air sucked into the second nozzle 16. In this embodiment, state detection section 40 includes a pressure sensor 42 and a humidity sensor 44.

Pressure sensor 42 detects the pressure of air sucked into second nozzle 16 . For example, the pressure sensor 42 repeatedly detects the pressure of the air sucked into the second nozzle 16 at predetermined time intervals. In this embodiment, the pressure sensor 42 is housed in the second nozzle 16 and detects the pressure of the air that is sucked into the second nozzle 16 and flows into the second nozzle 16 . Note that, for example, the pressure sensor 42 may be housed in the main body 12 and may detect the pressure of the air sucked into the second nozzle 16 and flowing into the main body 12.

Humidity sensor 44 detects the humidity of the air sucked into second nozzle 16 . For example, the humidity sensor 44 repeatedly detects the humidity of the air sucked into the second nozzle 16 at predetermined time intervals. In this embodiment, the humidity sensor 44 is housed in the main body 12 and detects the humidity of the air sucked into the second nozzle 16 and flowing into the main body 12 . Note that, for example, the humidity sensor 44 may be housed in the second nozzle 16 and may detect the humidity of the air that is sucked into the second nozzle 16 and flows into the inside of the second nozzle 16.

The liquid detection unit 22 is a sensor that detects the liquid sucked into the second nozzle 16. That is, the liquid detection unit 22 detects the liquid discharged from the first nozzle 14 inserted into one nasal cavity 3 and sucked into the second nozzle 16 inserted into the other nasal cavity 4. . In this embodiment, the liquid detection section 22 is housed in the main body section 12. Note that, for example, the liquid detection section 22 may be housed in the second nozzle 16. For example, the liquid detection section 22 is an optical sensor, and detects the liquid by irradiating the liquid that has passed through the liquid detection section 22 with light.

The time measurement unit 24 is a timer that measures the time from when the first nozzle 14 ejects the liquid until the liquid detection unit 22 detects the liquid sucked into the second nozzle 16. For example, since the timing at which the liquid is ejected from the ejection unit 18 and the timing at which the liquid is ejected from the first nozzle 14 are approximately the same, the time measurement unit 24 measures the timing at which the ejection unit 18 ejects the liquid. By starting the measurement and ending the measurement at the timing when the liquid detection unit 22 detects the liquid, the liquid detection unit 22 detects the liquid sucked into the second nozzle 16 after the first nozzle 14 has discharged the liquid. Measure the time it takes to detect. In this embodiment, the time measuring section 24 is housed in the main body section 12. Note that, for example, the time measuring section 24 may be provided outside the main body section 12.

The operation accepting unit 26 accepts an operation by the user 1. In this embodiment, the operation reception section 26 is provided on the side surface of the main body section 12. In this embodiment, when the operation reception unit 26 receives an operation by the user 1, the first nozzle 14 discharges liquid, and the second nozzle 16 sucks air from outside the liquid discharge device 10. For example, the operation reception unit 26 is a push button, a touch button, a switch, or the like.

The control unit 28 controls the discharge of liquid from the first nozzle 14 and the airflow generated by the second nozzle 16. In this embodiment, the control section 28 is housed in the main body section 12. For example, the control unit 28 is a control board on which a control circuit and the like for controlling the ejection of liquid from the first nozzle 14 and the airflow generated by the second nozzle 16 are mounted.

The power supply unit 30 supplies power to the discharge unit 18, the suction unit 20, the state detection unit 40, the liquid detection unit 22, the time measurement unit 24, the control unit 28, and the like. The discharge section 18 , the suction section 20 , the state detection section 40 , the liquid detection section 22 , the time measurement section 24 , the control section 28 , and the like operate based on the power supplied from the power supply section 30 . In this embodiment, the power supply section 30 is housed in the main body section 12. For example, the power supply unit 30 may be a battery or the like, or may be a board on which a circuit for supplying power supplied from an external power source via an adapter is mounted.

FIG. 3 is a block diagram showing the functional configuration of the liquid ejection device 10 of FIG. 1. As shown in FIG.

As shown in FIG. 3, the control section 28 includes a discharge control section 32, an airflow control section 34, and a calculation section 36.

The discharge control unit 32 controls the discharge of liquid from the first nozzle 14 . In this embodiment, the discharge control section 32 controls the discharge of liquid from the first nozzle 14 by controlling the discharge section 18 . For example, when the operation reception unit 26 receives an operation by the user 1, the discharge control unit 32 causes the discharge unit 18 to discharge the liquid, and causes the first nozzle 14 to discharge the liquid.

For example, the discharge control unit 32 causes the liquid to be discharged from the first nozzle 14 in a state where an airflow flowing from one nasal cavity 3 to the other nasal cavity 4 is generated. For example, the discharge control unit 32 determines whether the airflow control unit 34 is operating the suction unit 20 when the operation reception unit 26 receives an operation by the user 1, and the airflow control unit 34 determines whether or not the suction unit 20 is operating. By operating the discharge unit 18 and discharging liquid from the first nozzle 14 while operating the first nozzle, the first nozzle The liquid is discharged from 14.

For example, the discharge control section 32 controls the discharge of liquid from the first nozzle 14 based on the detection result of the state detection section 40 . Specifically, for example, the discharge control unit 32 controls the discharge pressure of the liquid from the first nozzle 14 and the first nozzle 14 based on the air pressure and air humidity detected by the state detection unit 40. Controls the timing etc. of ejecting liquid from.

For example, the discharge control unit 32 controls the discharge of liquid from the first nozzle 14 based on the detection result of the pressure sensor 42. Specifically, for example, when the amount of pressure fluctuation detected by the pressure sensor 42 is within a predetermined range, the discharge control unit 32 operates the discharge unit 18 to discharge the liquid from the first nozzle 14. . Further, for example, if the amount of pressure fluctuation detected by the pressure sensor 42 is not within a predetermined range, the discharge control unit 32 does not operate the discharge unit 18 and does not discharge liquid from the first nozzle 14 . For example, the predetermined range is a range in which the amount of pressure fluctuation detected by the pressure sensor 42 falls when the user 1 is not breathing, and the range in which the pressure fluctuation amount detected by the pressure sensor 42 falls when the user 1 is breathing. This is the range within which the amount of pressure fluctuation detected by That is, for example, the discharge control section 32 operates the discharge section 18 to discharge liquid from the first nozzle 14 when the user 1 is not breathing, and when the user 1 is breathing. The discharge part 18 is not operated and the liquid is not discharged from the first nozzle 14.

For example, the discharge control unit 32 controls the discharge of liquid from the first nozzle 14 based on the detection result of the humidity sensor 44. Specifically, for example, the discharge control unit 32 controls the discharge pressure of the discharge unit 18 so that the humidity detected by the humidity sensor 44 becomes a predetermined humidity, and controls the discharge pressure of the liquid from the first nozzle 14. control. For example, the higher the liquid discharge pressure from the first nozzle 14, the higher the humidity detected by the humidity sensor 44, and the lower the liquid discharge pressure from the first nozzle 14, the higher the humidity detected by the humidity sensor 44. humidity will be lower.

The airflow control unit 34 controls the airflow flowing from one nasal cavity 3 to the other nasal cavity 4. In this embodiment, the airflow control section 34 controls the airflow by controlling the suction section 20 . For example, when the operation reception unit 26 receives an operation by the user 1, the airflow control unit 34 causes the suction unit 20 to suck air, causes the second nozzle 16 to suck air, and generates an airflow.

For example, the airflow control unit 34 controls the airflow flowing from one nasal cavity 3 to the other nasal cavity 4 based on the distance calculated by the calculation unit 36. For example, the airflow control unit 34 controls the suction period by the suction unit 20 such that the longer the distance calculated by the calculation unit 36 is, the longer the airflow generation period is, thereby controlling the airflow generation period. Further, for example, the airflow control unit 34 controls the suction force by the suction unit 20 such that the longer the distance calculated by the calculation unit 36 is, the faster the speed of the airflow becomes, thereby controlling the speed of the airflow. For example, the airflow generation period is the airflow generation period after the liquid is discharged from the first nozzle 14.

For example, the airflow control unit 34 controls the airflow flowing from one nasal cavity 3 to the other nasal cavity 4 based on the detection result of the state detection unit 40 . Specifically, for example, the airflow control unit 34 controls the generation period of the airflow, the speed of the airflow, etc. based on the air pressure and air humidity detected by the state detection unit 40.

For example, the airflow control unit 34 controls the airflow flowing from one nasal cavity 3 to the other nasal cavity 4 based on the detection result of the pressure sensor 42 . Specifically, for example, the airflow control unit 34 controls the suction force by the suction unit 20 so that the pressure detected by the pressure sensor 42 becomes a predetermined pressure, and controls the speed of the airflow.

For example, the airflow control unit 34 controls the airflow flowing from one nasal cavity 3 to the other nasal cavity 4 based on the detection result of the humidity sensor 44 . Specifically, for example, the airflow control unit 34 controls the suction time and suction force by the suction unit 20 so that the humidity detected by the humidity sensor 44 becomes a predetermined humidity, and controls the generation period of the airflow and the speed of the airflow. control. For example, the longer the airflow generation period, the higher the humidity detected by the humidity sensor 44, and the shorter the airflow generation period, the lower the humidity detected by the humidity sensor 44. Further, for example, the faster the speed of the airflow, the higher the humidity detected by the humidity sensor 44, and the slower the speed of the airflow, the lower the humidity detected by the humidity sensor 44.

The calculation unit 36 calculates the distance by multiplying the velocity of the airflow flowing from one nasal cavity 3 to the other nasal cavity 4 by the time measured by the time measurement unit 24. For example, the speed of the airflow is determined by the airflow control section 34, and the calculation section 36 acquires the speed of the airflow from the airflow control section 34. Further, for example, when the liquid ejection device 10 includes a pressure sensor 42 and a temperature sensor 46 (described later), the speed of the airflow can be calculated more accurately by using the pressure sensor 42 and the temperature sensor 46. Specifically, for example, when the air density determined from the temperature measured by the temperature sensor 46 is ρ, the pressure (dynamic pressure) measured by the pressure sensor 42 is Pd, and the speed of the airflow is V, the following is expressed. The speed of airflow can be calculated from the formula.

Note that the lower the temperature measured by the temperature sensor 46, the greater the air density and the slower the speed of the airflow. When the time measured by the time measurement unit 24 is T and the distance is L, the distance can be calculated by L=T×V.

FIG. 4 is a flowchart showing an example of the operation of the liquid ejecting device 10 of FIG.

As shown in FIG. 4, when the liquid ejection device 10 is used by the user 1, the first nozzle 14 and the second nozzle 16 are first inserted into the nasal cavity 2 (step S1). Specifically, the first nozzle 14 is inserted into one nasal cavity 3, and the second nozzle 16 is inserted into the other nasal cavity 4.

When the first nozzle 14 and the second nozzle 16 are inserted into the nasal cavity 2, the operation reception unit 26 accepts an operation by the user 1 (step S2). For example, if the operation reception unit 26 is a push button, the operation reception unit 26 is pressed by the user 1.

When the operation reception unit 26 accepts the operation by the user 1, the airflow control unit 34 generates an airflow flowing from one nasal cavity 3 to the other nasal cavity 4 (generation step) (step S3). For example, the airflow control unit 34 generates an airflow by controlling the suction unit 20 to cause the second nozzle 16 to suck air.

When the airflow control unit 34 generates an airflow flowing from one nasal cavity 3 to the other nasal cavity 4, the pressure sensor 42 detects the pressure of the air sucked into the second nozzle 16 (step S4).

When the pressure sensor 42 detects the pressure of the air sucked into the second nozzle 16, the discharge control unit 32 determines whether the amount of change in pressure detected by the pressure sensor 42 is within a predetermined range (step S5). For example, the discharge control unit 32 acquires the pressure detected by the pressure sensor 42 in a predetermined period up to the present, and determines whether the amount of pressure fluctuation in the predetermined period is within a predetermined range.

If the amount of pressure variation detected by the pressure sensor 42 is not within a predetermined range (No in step S5), the discharge control unit 32 determines whether the amount of pressure variation detected by the pressure sensor 42 is within a predetermined range. is determined again (step S5).

If the amount of pressure fluctuation detected by the pressure sensor 42 is within a predetermined range (Yes in step S5), the discharge control unit 32 causes the liquid to be discharged from the first nozzle 14 (discharge step) (step S6). . For example, the discharge control section 32 controls the discharge section 18 to discharge the liquid from the first nozzle 14 .

In this way, for example, the discharge control unit 32 controls the discharge control unit 32 when an airflow is generated flowing from one nasal cavity 3 to the other nasal cavity 4 and the amount of pressure fluctuation detected by the pressure sensor 42 is within a predetermined range. , the liquid is ejected from the first nozzle 14. That is, for example, the discharge control unit 32 causes the liquid to be discharged from the first nozzle 14 when the airflow flowing from one nasal cavity 3 to the other nasal cavity 4 is occurring and the user 1 is not breathing. .

When the discharge control section 32 discharges the liquid from the first nozzle 14, the liquid detection section 22 detects the liquid sucked into the second nozzle 16 (step S7). For example, when the liquid discharged from the first nozzle 14 is carried by the airflow and sucked into the second nozzle 16, the liquid detection unit 22 detects the liquid sucked into the second nozzle 16.

When the liquid detection unit 22 detects the liquid sucked into the second nozzle 16, the time measurement unit 24 measures the time until the liquid is detected (step S8). For example, the time measuring section 24 starts measuring at the timing when the discharging section 18 discharges the liquid, and ends the measurement at the timing when the liquid detecting section 22 detects the liquid, so that the liquid is discharged from the first nozzle 14. The time from when the liquid is detected until the liquid detection unit 22 detects the liquid is measured.

When the time measurement unit 24 measures the time, the calculation unit 36 calculates the distance (step S9). Specifically, the calculation unit 36 calculates the distance by multiplying the speed of the airflow by the time measured by the time measurement unit 24.

When the discharge control unit 32 discharges the liquid from the first nozzle 14, the humidity sensor 44 detects the humidity of the air sucked into the second nozzle 16 (step S10).

The airflow control unit 34 determines the airflow generation period based on the distance calculated by the calculation unit 36 and the humidity detected by the humidity sensor 44 (step S11).

For example, when it is desired to eject liquid to a predetermined region 5 (see FIG. 2) in the nasal cavity 2, the airflow control section 34 moves the liquid from the first nozzle 14 to the predetermined region 5 based on the distance calculated by the calculation section 36. The airflow generation period is determined based on the estimated distance. For example, the airflow control unit 34 determines the airflow generation period such that the longer the distance, the longer the airflow generation period. More specifically, the total distance R is calculated from the time T elapsed from the start of ejection until the sensor (liquid detection unit 22) detects it by the time measurement unit 24 and the speed V set by the airflow control unit 34, so that the total distance R is R=T× Calculated in V. Furthermore, for example, in the case of the predetermined site 5, the distance can be set to 45% of the total distance, and a point where R×0.45=R1 can be determined as a suitable distance for the aerosol to reach.

For example, if the humidity detected by the humidity sensor 44 is higher than a predetermined humidity, the airflow control unit 34 determines the airflow generation period so that the humidity detected by the humidity sensor 44 is equal to or lower than the predetermined humidity. do.

For example, after the airflow control unit 34 determines the airflow generation period, the liquid ejection device 10 performs the steps S1 to S6 described above again. When steps S1 to S6 described above are performed again, the airflow control unit 34 generates the airflow only for the generation period determined in step S11 after the liquid is discharged from the first nozzle 14 in step S6. Thereby, the airflow can be generated for a period corresponding to the condition inside the nasal cavity 2, and the liquid discharged from the first nozzle 14 can be discharged to the predetermined region 5 more reliably.

Note that, for example, the liquid ejecting device 10 may perform only steps S1 to S6. In this case, for example, the airflow control unit 34 generates the airflow for a predetermined generation period after the liquid is discharged from the first nozzle 14 in step S6.

Further, for example, the liquid ejecting device 10 may include an operation receiving unit that receives an operation by the user 1 to set the generation period and speed of the airflow.

As described above, in the liquid ejection device 10, it is possible to suppress the liquid from spreading by carrying the liquid in the airflow, so it is possible to suppress the liquid from adhering to areas other than the predetermined portion 5, and to more reliably distribute the liquid to the predetermined portion. It can be discharged to site 5. In addition, in the liquid ejecting device 10, the airflow can be controlled according to the position of the predetermined part 5, so if the user 1 is an adult, the airflow generation period is made longer; In some cases, the liquid can be more reliably discharged to the predetermined region 5 by shortening the period during which the airflow is generated. In addition, the liquid ejection device 10 can detect the state of the air sucked into the second nozzle 16 and eject the liquid based on the state of the air sucked into the second nozzle 16. Furthermore, it is possible to discharge to the predetermined portion 5 more reliably.

The liquid ejection device 10 according to the first embodiment has been described above.

The liquid ejection device 10 according to the present embodiment includes a first nozzle 14 that ejects liquid when inserted into one nasal cavity 3, and a first nozzle 14 that ejects liquid when inserted into the other nasal cavity 4, and a first nozzle 14 that inhales air when inserted into the other nasal cavity 4. It includes a second nozzle 16 that generates an airflow flowing from the nasal cavity 3 to the other nasal cavity 4, and a state detection unit 40 that detects the state of the air sucked into the second nozzle 16.

According to this aspect, since the state of the air sucked into the second nozzle 16 can be detected, the liquid can be discharged based on the state of the air sucked into the second nozzle 16, and the air flow can be generated, so that the liquid can be more accurately discharged to a predetermined region 5 within the nasal cavity 2.

Further, in the liquid ejection device 10 according to the present embodiment, the state detection unit 40 includes a pressure sensor 42 that detects the pressure of the air sucked into the second nozzle 16.

According to this aspect, since the pressure of the air sucked into the second nozzle 16 can be detected, the liquid can be discharged based on the pressure of the air sucked into the second nozzle 16, and the air flow can be generated, so that the liquid can be more accurately discharged to a predetermined region 5 within the nasal cavity 2.

Furthermore, in the liquid ejection device 10 according to the present embodiment, the state detection unit 40 includes a humidity sensor 44 that detects the humidity of the air sucked into the second nozzle 16.

According to this aspect, since the humidity of the air sucked into the second nozzle 16 can be detected, the liquid can be discharged based on the humidity of the air sucked into the second nozzle 16, and the air flow can be generated, so that the liquid can be more accurately discharged to a predetermined region 5 within the nasal cavity 2.

The liquid ejection device 10 according to the present embodiment further includes an ejection control section 32 that controls ejection of liquid from the first nozzle 14 based on the detection result of the state detection section 40.

According to this aspect, the ejection of the liquid from the first nozzle 14 can be controlled based on the detection result of the state detection unit 40, so that the liquid can be ejected more accurately to the predetermined site 5 in the nasal cavity 2. I can do it.

The liquid ejection device 10 according to the present embodiment further includes an airflow control section 34 that controls airflow based on the detection result of the state detection section 40.

According to this aspect, since the airflow can be controlled based on the detection result of the state detection section 40, the liquid can be accurately discharged to the predetermined site 5 within the nasal cavity 2.

In addition, in the liquid ejection device 10 according to the present embodiment, the second nozzle 16 is inserted into the other nasal cavity 4, and the liquid is ejected from the first nozzle 14 inserted into one nasal cavity 3. The second nozzle 16 further includes a liquid detection unit 22 that sucks the liquid and detects the liquid sucked into the second nozzle 16.

According to this aspect, if the liquid detection unit 22 does not detect the liquid, it can be presumed that the liquid has adhered to the predetermined site 5 within the nasal cavity 2 . Moreover, when liquid is detected by the liquid detection unit 22, it can be estimated that the liquid is not attached to the predetermined site 5 within the nasal cavity 2. In this way, it is possible to estimate whether or not the liquid has adhered to the predetermined site 5 within the nasal cavity 2, so that the liquid can be more accurately discharged to the predetermined site 5 within the nasal cavity 2.

Further, the liquid ejection device 10 according to the present embodiment measures the time from when the first nozzle 14 ejects the liquid until the liquid detection unit 22 detects the liquid sucked into the second nozzle 16. It further includes a time measurement section 24.

According to this aspect, it is possible to measure the time from when the first nozzle 14 discharges the liquid until the liquid detection unit 22 detects the liquid, so the speed of the airflow, etc. can be adjusted based on the time, and the speed of the airflow can be adjusted. By adjusting the speed and the like, the liquid can be more accurately ejected to a predetermined site 5 within the nasal cavity 2.

The liquid ejection device 10 according to the present embodiment further includes a calculation unit 36 that calculates a distance by multiplying the speed of the airflow by the time measured by the time measurement unit 24.

According to this aspect, the distance can be calculated by multiplying the speed of the airflow and the time measured by the time measurement unit 24, so the speed of the airflow, etc. can be adjusted based on the distance, and the speed of the airflow, etc. can be adjusted. By doing so, the liquid can be more accurately discharged to a predetermined site 5 within the nasal cavity 2.

The liquid ejection device 10 according to the present embodiment further includes an airflow control section 34 that controls airflow based on the distance calculated by the calculation section 36.

According to this aspect, the airflow can be controlled based on the distance calculated by multiplying the speed of the airflow by the time measured by the time measurement unit 24, and by controlling the airflow, the liquid can be directed to a predetermined location within the nasal cavity 2. It is possible to more accurately discharge the liquid to the area 5.

Further, the liquid ejection method according to the present embodiment includes a ejection step (step S6) of ejecting liquid from the first nozzle 14 inserted into one nasal cavity 3, and a discharging step (step S6) in which the liquid is ejected from the first nozzle 14 inserted into the other nasal cavity 4. a generation step (step S3) of generating an airflow flowing from one nasal cavity 3 to the other nasal cavity 4 by inhaling air into the second nozzle 16; and detecting the state of the air sucked into the second nozzle 16. and a detection step (steps S4, S10).

According to this aspect, the same effects as those of the liquid ejection device 10 described above are achieved.

(Second embodiment)
FIG. 5 is a schematic diagram showing a liquid ejecting device 10a according to the second embodiment. In addition, in FIG. 5, the main body part 12, the 1st nozzle 14, and the 2nd nozzle 16 are shown in cross section.

The liquid ejection device 10a is mainly different from the liquid ejection device 10 in that the liquid ejection device 10a includes a state detection section 40a instead of the state detection section 40. In the following, differences from the liquid ejection device 10 will be mainly explained.

As shown in FIG. 5, the state detection section 40a differs from the state detection section 40 mainly in that it includes a temperature sensor 46 instead of the humidity sensor 44.

Temperature sensor 46 detects the temperature of the air sucked into second nozzle 16 . In this embodiment, the temperature sensor 46 is housed in the main body 12 and detects the temperature of the air sucked into the second nozzle 16 and flowing into the main body 12 . Note that, for example, the temperature sensor 46 may be housed in the second nozzle 16 and may detect the temperature of the air that is sucked into the second nozzle 16 and flows into the inside of the second nozzle 16.

FIG. 6 is a block diagram showing the functional configuration of the liquid ejecting device 10a of FIG. 5. As shown in FIG.

As shown in FIG. 6, for example, the discharge control unit 32 controls the discharge of liquid from the first nozzle 14 based on the detection result of the temperature sensor 46. Specifically, for example, the discharge unit 18 is configured to hold a plurality of mutually different liquids and can select and discharge one liquid from the plurality of liquids, and the discharge control unit 32 is configured to hold a plurality of liquids that are different from each other and to be able to select and discharge one liquid from the plurality of liquids. Based on the temperature detected by 46, the liquid to be ejected from the ejection unit 18, that is, the liquid to be ejected from the first nozzle 14 is determined. For example, if the temperature detected by the temperature sensor 46 is higher than a predetermined temperature, the discharge control unit 32 estimates that there is a high-temperature region within the nasal cavity 2, and supplies the first calming liquid to the nasal cavity 2. It is discharged from the nozzle 14.

Here, the predetermined temperature is approximately a normal body temperature, and is a temperature that would be detected by the temperature sensor 46 when the user 1 is in a normal state. Further, since the airflow discharged from the nasal cavity 2 takes in outside airflow, the temperature of the airflow discharged from the nasal cavity 2 is slightly lower than the body temperature of the user 1. Furthermore, the external airflow taken into the nasal cavity 2 is warmed by body temperature by the nasal wall and mucous membrane within the nasal cavity, but the temperature is still equal to or slightly lower than body temperature. Therefore, a configuration may be adopted in which a temperature higher than 35° C. is regarded as a high temperature. Furthermore, since the body temperature of the user 1, which is the source of this predetermined temperature, varies from person to person, depending on the body temperature of the user 1 depending on the physical condition of the day and the outside temperature, an external temperature detection device other than this device, a thermometer, etc. The temperature may be appropriately set at, for example, 35.5 degrees using a temperature sensor or the like.

For example, the airflow control unit 34 controls the airflow flowing from one nasal cavity 3 to the other nasal cavity 4 based on the detection result of the temperature sensor 46 . Specifically, for example, when the temperature detected by the temperature sensor 46 is higher than a predetermined temperature, the airflow control unit 34 determines that there is a high-temperature region in the nasal cavity 2 and the airflow is caused by the high-temperature region. It is estimated that the flow path has become narrow and it is difficult for the airflow to flow, and the suction force by the suction unit 20 is increased to increase the pressure of the airflow to make the airflow easier.

FIG. 7 is a flowchart showing an example of the operation of the liquid ejection device 10a of FIG.

In the following, differences from the example of the operation of the liquid ejecting device 10 described above will be mainly explained.

As shown in FIG. 7, when the airflow control unit 34 generates an airflow flowing from one nasal cavity 3 to the other nasal cavity 4 (step S3), the temperature sensor 46 detects the temperature of the air sucked into the second nozzle 16. is detected (step S21).

When the temperature sensor 46 detects the temperature of the air sucked into the second nozzle 16, the discharge control unit 32 causes the liquid to be discharged from the first nozzle 14 (step S6).

FIG. 8 is a first explanatory diagram for explaining an example of the operation of the liquid ejecting device 10a of FIG. 5. As shown in FIG. For example, as shown in FIG. 8, when the inside of the nasal cavity 2 is in a normal state, the discharge control unit 32 causes the first nozzle 14 to discharge the liquid at a normal discharge pressure.

FIG. 9 is a second explanatory diagram for explaining an example of the operation of the liquid ejecting device 10a of FIG. 5. As shown in FIG. For example, as shown in FIG. 9, when there is a high-temperature region 6 inside the nasal cavity 2, the airflow hitting the high-temperature region 6 causes the temperature of the air sucked into the second nozzle 16 to reach a normal state ( (see FIG. 8), and the flow path through which the airflow passes narrows due to the high temperature area 6, causing the pressure of the air sucked into the second nozzle 16 to become higher than the normal state (see FIG. 8). become or become lower. Therefore, for example, when the discharge control unit 32 estimates that the high temperature region 6 is occurring based on the temperature and pressure of the air sucked into the second nozzle 16, the discharge control unit 32 supplies the calming liquid to the first nozzle 14. Discharge from.

FIG. 10 is a third explanatory diagram for explaining an example of the operation of the liquid ejecting device 10a of FIG. 5. As shown in FIG. For example, as shown in FIG. 10, when there is a nasal congestion site 7 in the nasal cavity 2, the temperature of the air sucked into the second nozzle 16 is approximately the same as in the normal state (see FIG. 8); As the flow path through which the airflow passes is narrowed by the stuffy nose region 7, the pressure of the air sucked into the second nozzle 16 becomes higher or lower than the normal state (see FIG. 8). Therefore, for example, when the discharge control unit 32 estimates that nasal congestion has occurred based on the temperature and pressure of the air sucked into the second nozzle 16, the discharge control unit 32 injects the liquid to suppress nasal congestion from the first nozzle 14. Let it spit out.

As described above, in the liquid ejection device 10a, the liquid is ejected from the first nozzle 14 and from one nasal cavity 3 to the other nasal cavity 4 based on the temperature and pressure of the air sucked into the second nozzle 16. The flowing airflow can be controlled, and the liquid can be more accurately discharged to a predetermined site 5 within the nasal cavity 2.

The liquid ejection device 10a according to the second embodiment has been described above.

In the liquid ejection device 10a according to the present embodiment, the state detection unit 40a includes a temperature sensor 46 that detects the temperature of the air sucked into the second nozzle 16.

According to this aspect, since the temperature of the air sucked into the second nozzle 16 can be detected, the liquid can be discharged based on the temperature of the air sucked into the second nozzle 16, and the air flow can be generated, so that the liquid can be more accurately discharged to a predetermined region 5 within the nasal cavity 2.

(Third embodiment)
FIG. 11 is a block diagram showing the functional configuration of a liquid ejection device 10b according to the third embodiment.

The liquid ejecting device 10b is mainly different from the liquid ejecting device 10 in that the liquid ejecting device 10b includes a state detecting section 40b instead of the state detecting section 40. In the following, differences from the liquid ejection device 10 will be mainly explained.

As shown in FIG. 11, the state detection section 40b differs from the state detection section 40 mainly in that it further includes a temperature sensor 46.

Regarding the temperature sensor 46, detailed description thereof will be omitted here by referring to the description of the second embodiment mentioned above.

FIG. 12 is a flowchart showing an example of the operation of the liquid ejecting device 10b of FIG. 11.

In the following, differences from the example of the operation of the liquid ejecting device 10 described above will be mainly explained.

As shown in FIG. 12, when the airflow control unit 34 generates an airflow flowing from one nasal cavity 3 to the other nasal cavity 4 (step S3), the pressure sensor 42 detects the pressure of the air sucked into the second nozzle 16. is detected (step S4).

Further, when the airflow control unit 34 generates an airflow flowing from one nasal cavity 3 to the other nasal cavity 4, the humidity sensor 44 detects the humidity of the air sucked into the second nozzle 16 (step S10).

Further, when the airflow control unit 34 generates an airflow flowing from one nasal cavity 3 to the other nasal cavity 4, the temperature sensor 46 detects the temperature of the air sucked into the second nozzle 16 (step S21).

The airflow control unit 34 controls the airflow based on the pressure detected by the pressure sensor 42, the humidity detected by the humidity sensor 44, and the temperature detected by the temperature sensor 46 (step S31). For example, the airflow control unit 34 increases or decreases the speed of the airflow being generated.

When the airflow control unit 34 controls the airflow, the discharge control unit 32 determines whether the amount of change in pressure detected by the pressure sensor 42 is within a predetermined range (step S5).

If the amount of pressure fluctuation detected by the pressure sensor 42 is within a predetermined range (Yes in step S5), the discharge control unit 32 discharges the liquid from the first nozzle 14 (step S6). For example, the discharge control unit 32 discharges the liquid from the first nozzle 14 based on the pressure detected by the pressure sensor 42, the humidity detected by the humidity sensor 44, and the temperature detected by the temperature sensor 46.

As described above, the liquid ejecting device 10b can eject an appropriate liquid after appropriately controlling the airflow, so that the liquid can be ejected to the predetermined region 5 more accurately.

Note that, for example, the state detection unit 40b may include only one or two of the pressure sensor 42, the humidity sensor 44, and the temperature sensor 46. In this case, for example, the airflow control section 34 may control the airflow based on only the one or only the two, and the discharge control section 32 may control the airflow based on only the one or the two. The ejection of liquid from the first nozzle 14 may be controlled.

The liquid ejection device 10b according to the third embodiment has been described above.

(Other embodiments, etc.)
Although the liquid ejection device according to the embodiment of the present invention has been described above, the present invention is not limited to this embodiment.

In the above embodiment, a case has been described in which the liquid ejected to the user 1 is a medical solution, but the present invention is not limited to this. For example, the liquid discharged to the user 1 may be an aromatic liquid that has a relaxing effect, a stimulating liquid that has an awakening effect, or the like.

Further, each of the above devices may be specifically configured as a computer system including a microprocessor, ROM, RAM, hard disk drive, display unit, keyboard, mouse, and the like. Computer programs are stored in the RAM or hard disk drive. Each device achieves its functions by the microprocessor operating according to a computer program. Here, a computer program is configured by combining a plurality of instruction codes indicating instructions to a computer in order to achieve a predetermined function.

Furthermore, some or all of the components constituting each of the above devices may be composed of one system LSI (Large Scale Integration). A system LSI is a super-multifunctional LSI manufactured by integrating a plurality of components on one chip, and includes, for example, a computer system including a microprocessor, ROM, RAM, and the like. In this case, the ROM stores a computer program. The system LSI achieves its functions by the microprocessor operating according to a computer program.

Furthermore, some or all of the components constituting each of the devices described above may be comprised of an IC card or a single module that is detachable from each device. An IC card or module is a computer system composed of a microprocessor, ROM, RAM, etc. The IC card or module may include the above-mentioned super multifunctional LSI. An IC card or module achieves its functions by a microprocessor operating according to a computer program. This IC card or this module may be tamper resistant.

Further, the present invention may be the method described above. Furthermore, the present invention may be a computer program that implements these methods using a computer, or may be a digital signal formed from the computer program.

Further, the present invention provides a computer-readable non-transitory recording medium for storing the computer program or the digital signal, such as a flexible disk, hard disk, CD-ROM, MO, DVD, DVD-ROM, DVD-RAM, BD ( It may also be recorded on a Blu-ray (registered trademark) Disc, a semiconductor memory, or the like. Further, the above-mentioned digital signals recorded on these non-temporary recording media may be used.

Further, in the present invention, the computer program or the digital signal may be transmitted via a telecommunication line, a wireless or wired communication line, a network typified by the Internet, data broadcasting, or the like.

Further, the present invention may provide a computer system including a microprocessor and a memory, wherein the memory stores the computer program, and the microprocessor may operate according to the computer program.

In addition, by recording the program or the digital signal on the non-temporary recording medium and transferring it, or by transferring the program or the digital signal via the network etc., It may be implemented by a system.

Furthermore, the above embodiment and the above modification may be combined.

The liquid ejection device according to the present invention can be applied, for example, as a nasal spray dispenser for ejecting a medicinal solution into a user's nasal cavity.

1 User 2 Nasal cavity 3 One nasal cavity 4 Other nasal cavity 5 Predetermined region 6 High temperature region 7 Nasal stuffiness region 10, 10a, 10b Liquid ejection device 12 Main body 14 First nozzle 16 Second nozzle 18 Discharge section 20 Suction Section 22 Liquid detection section 24 Time measurement section 26 Operation reception section 28 Control section 30 Power supply section 32 Discharge control section 34 Air flow control section 36 Calculation section 40, 40a, 40b State detection section 42 Pressure sensor 44 Humidity sensor 46 Temperature sensor

Claims (11)

a first nozzle that discharges liquid while inserted into one nasal cavity;
a second nozzle that generates an airflow flowing from the one nasal cavity to the other nasal cavity by inhaling air while being inserted into the other nasal cavity;
and a state detection unit that detects the state of the air sucked into the second nozzle.
Liquid discharge device. The state detection unit includes a pressure sensor that detects the pressure of the air sucked into the second nozzle.
The liquid ejection device according to claim 1. The state detection unit includes a humidity sensor that detects the humidity of the air sucked into the second nozzle.
The liquid ejection device according to claim 1. The state detection unit includes a temperature sensor that detects the temperature of the air sucked into the second nozzle.
The liquid ejection device according to claim 1. further comprising an ejection control section that controls ejection of the liquid from the first nozzle based on the detection result of the state detection section;
The liquid ejection device according to any one of claims 1 to 4. further comprising an airflow control section that controls the airflow based on the detection result of the state detection section;
The liquid ejection device according to any one of claims 1 to 4. The second nozzle, while inserted into the other nasal cavity, sucks the liquid discharged from the first nozzle inserted into the one nasal cavity,
further comprising a liquid detection unit that detects the liquid sucked into the second nozzle;
The liquid ejection device according to claim 1. further comprising a time measurement unit that measures the time from when the first nozzle discharges the liquid until the liquid detection unit detects the liquid sucked into the second nozzle;
The liquid ejection device according to claim 7. further comprising a calculation unit that calculates a distance by multiplying the speed of the airflow and the time measured by the time measurement unit;
The liquid ejection device according to claim 8. further comprising an airflow control unit that controls the airflow based on the distance calculated by the calculation unit;
The liquid ejection device according to claim 9. a discharging step of discharging liquid from a first nozzle inserted into one nasal cavity;
generating an airflow flowing from the one nasal cavity to the other nasal cavity by sucking air into a second nozzle inserted into the other nasal cavity;
a detection step of detecting the state of the air sucked into the second nozzle;
Liquid dispensing method.

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