JP2008043732A - Medicine ejection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To keep the air flow path with deposits of a medicine in a clean state in a simple configuration, in a medicine ejection device for administering a medicine to the throat, bronchi or lungs. <P>SOLUTION: The medicine ejection device which ejects a medicine to be inhaled by a user via a suction port includes a flow path member linked to the suction port and capable of forming an air flow path through which the medicine is guided by the inhalation by the user to the suction port, and an internal wall face constituting member which is intended for formation of the internal wall of the air flow path and allows detachable fitting in the flow path member. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a medicine ejection device that ejects medicine to be inhaled by a user.

With the medicine ejection devices disclosed in Patent Literature 1 and Patent Literature 2, a treatment for a user who utilizes an information database such as an electronic medical record is being realized. Such a medicine ejection device has storage means for storing information about the individual user including information on the user's medical record and prescription. The medicine ejection device is also a portable terminal that also has an inhaler that inhales medicine to the user. And it has a spray control means which controls a suction device according to a user's inhalation profile and sprays a medicine so that a user can inhale medicine according to the information on the prescription.
International Publication WO95 / 01137 International Publication WO02 / 04043

  Such a medicine ejection device usually has a passage (hereinafter referred to as “the passage in which the atomized medicine is transported from the location where the medicine is ejected in the device to the inside of the user's body” until it is administered into the user's body. An air flow path). In this case, a part of the discharged medicine may be attached to the inner wall surface of the air flow path. If this is left unattended, it is not preferable in terms of hygiene, for example, germs may propagate on the inner wall of the air flow channel to which the drug has adhered. That is, in the conventional medicine ejection device, every time a patient inhales, the air channel inner wall in the device becomes dirty, so the member forming the air channel itself must be removed and washed, or replaced with a new one. There was a problem to be solved.

  The present invention has been made in view of the above-mentioned unsolved problems of the prior art, and an object of the present invention is to provide a medicine ejection device that can easily cope with contamination of the air flow path in the medicine ejection device. is there.

  In view of the above problems, a medicine ejection device according to the present invention is a medicine ejection device that ejects a medicine to be inhaled by a user through an inhalation port, and is connected to the inhalation port, and the inhalation by the user A flow path member capable of forming an air flow path for guiding a drug to the suction port; and an inner wall surface forming member for forming an inner wall of the air flow path which can be detachably mounted in the flow path member. Features.

  In view of the above problems, another medicine ejection device according to the present invention is a medicine ejection device that ejects a medicine to be inhaled by a user via an inhalation port, and is connected to the inhalation port, and the user A flow path member capable of forming an air flow path that guides the drug to the suction port by inhalation of the liquid, a drug discharge section that discharges the drug to the air flow path formed in the flow path member, and the drug discharge And removing means for removing the medicine discharged from the section and attached to the inner wall of the air flow path.

  According to the medicine ejection device of the present invention, since the removable inner wall surface forming member capable of forming a new inner wall surface is provided in the air flow path, it is easy if the user removes the inner wall surface forming member after inhalation. It is possible to remove the drug adhered to the surface. As a result, the air flow path can be kept clean with a simple operation.

  In addition, according to another medicine ejection device of the present invention, since the medicine adhering to the air channel can be removed after the medicine ejection device is used, the air channel in the device can be kept hygienic. Moreover, the trouble which wash | cleans the member which forms an air flow path, or replaces every time can be reduced.

  As an embodiment of the medicine ejection device of the present invention, an inhaler that can be carried and carried by a user will be described as an example. FIG. 1 shows a configuration diagram of an inhaler according to an embodiment of the present invention. FIG. 2 is a block diagram showing an electrical configuration of the inhaler shown in FIG. The inhaler has a configuration in which a flow passage member 3 and an inlet (mouthpiece) 2 for attaching a mouth or a nose for inhalation by a user are attached to the apparatus body 1. One end of the flow path member 3 is provided with an opening (air intake 4) so that an air flow is formed in the flow path member 3 when a user inhales from the suction port 2. The other end of the flow path member 3 is connected to the suction port 2. When the user performs inhalation, an air flow is generated from the air intake 4 toward the intake 2. At that time, when the medicine is discharged to the air flow path in the flow path member 3, the medicine is carried toward the suction port 2 and is administered into the mouth of the user.

  Here, in this specification, the “flow path member” means a member that forms an air flow path that is a passage of a medicine from a portion where the medicine is ejected to a suction port in the medicine ejection device. That is, the space formed in the flow path member becomes an “air flow path”.

  However, there is a concern that a part of the medicine discharged into the air channel remains attached to the inner wall of the air channel. If the flow path member 3 and the suction port 2 can be attached to and detached from the apparatus main body, cleaning can be performed every time. However, this inhalation device has a mechanism for removing the drug adhering to the inner wall of the air flow path, and there is no need to wash the flow path member 3 every time. The material which comprises the flow path member 3 is not specifically limited, It can select arbitrarily by the specification of a chemical | medical agent discharge apparatus. Examples include plastics, metals, rubber members and the like. In addition, the flow path member and the suction port may be configured as separate bodies so as to be connectable to each other, or may be configured integrally.

  The control unit 8 shown in FIG. 2 is a CPU that is provided in the apparatus main body 1 and controls the operation of the entire inhaler, starting with driving of the ejection head 6a. When a signal for detecting inhalation is output from the pressure sensor 7 for detecting the negative pressure generated in the air flow path by the user's inhalation, the control unit 8 starts to discharge the medicine in synchronization therewith. Transmits a drive signal to the ejection head 6a. In addition, you may provide the display part (display) 9 for making arbitrary information, such as operation of an inhaler and discharge conditions, recognize by a user's vision. 10 is a power switch, and 11 is a power indicator LED that is lit when the power of the inhaler is turned on.

  In the present invention, the medicine ejection section (ejection head) has an arbitrary ejection energy generating element. Examples of the discharge energy generating element include an electrothermal conversion element that imparts thermal energy to a medicine or an electromechanical conversion element that imparts mechanical energy. That is, as a method for discharging the medicine, a method of applying thermal energy to the medicine by using an electrothermal conversion element and discharging the medicine from a discharge port (thermal jet method), an electromechanical conversion element for giving mechanical energy to the medicine (for example, piezoelectric) An example is a method of discharging a medicine from an outlet using the vibration pressure of the element. The ejection method can be selected according to the type of medicine.

  When using the thermal jet method, increase the size and reproducibility of each liquid discharge unit, such as the diameter of the discharge port, the amount of heat pulse used for discharge, the size of the micro-heater as an electrothermal transducer, etc. Is possible. For this reason, it is possible to achieve a narrow droplet size distribution. Further, the manufacturing cost of the head is low, and the applicability to a small apparatus that requires frequent replacement of the head is also high. Therefore, when portability and convenience are required for the medicine ejection device, a thermal jet type ejection device is particularly preferable.

  In the present invention, the ejection head may constitute a medicine ejection cartridge integrally with the medicine tank that contains the medicine, or may be constituted as a separate body from the medicine tank. Although the medicine discharge cartridge is integrated with an inner wall surface forming member 5 described later in FIG. 1, generally, an attachment portion is provided so that the medicine discharge cartridge can be attached in the apparatus main body 1. Is directed into the air flow path so that the drug can be discharged into the air flow path.

  The drugs used in the present invention include not only pharmaceutical compounds having pharmacological and physiological effects, but also ingredients for flavor, fragrance, dye, pigment, etc. in addition to pharmaceutical compounds. It is an included concept. The drug may be liquid or powder.

  Moreover, the chemical | medical solution used for this invention says the liquid medium containing a liquid chemical | medical agent or a chemical | medical agent. The chemical solution may contain any additive. The state of the drug in the liquid may be any of dissolution, dispersion, emulsification, suspension, and slurry, and it is more preferable if it is uniform in the liquid.

  When a chemical solution is used as a drug, the main medium of the liquid is preferably water or an organic substance, and water is preferably the main medium in consideration of administration to a living body.

  Examples of the mechanism for removing the drug attached to the air flow path, which is a feature of the present invention, include the following. One is to form a new inner wall surface with respect to the inner wall surface of the air flow channel to which the drug has adhered after the drug is discharged. Another method is to provide a wiping means for wiping the inner wall surface of the air flow channel where the drug has adhered after the drug is discharged.

  The inner wall surface of the air channel needs to be hygienic because it is in contact with the air current that carries the drug. However, according to the method described above, the drug is discharged into the clean air channel at the next use. Can do. In addition, since there is no need to replace or remove the flow path member 3 every time, it is user-friendly.

  Specific embodiments are shown below.

(Embodiment 1)
As shown in FIG. 1, the inhaler according to the present embodiment is detachably fitted into the apparatus main body 1, the flow path member 3 and the mouthpiece 2 supported by the apparatus main body 1, and the flow path member 3. The inner wall surface forming member 5 is provided.

  The inner wall surface forming member 5 is configured to be detachable from the flow path member 3 and the mouthpiece 2, and the mouthpiece 2 is configured to be detachable from the apparatus main body 1. Since at least a part of the inner wall surface forming member 5 is made of a flexible material, it can be easily attached to and detached from the flow path member 3 and the mouthpiece 2.

  Here, in the present specification, the “inner wall surface forming member” may be any member having an action capable of preventing the drug from directly adhering to the inner wall of the flow path member, and particularly configured to be detachable from the flow path member. When attached to the flow path member, it means a member that forms the inner wall of the air flow path. That is, as apparent from FIG. 1, when the inner wall surface forming member 5 is not mounted, a part of the surface of the flow path member 3 forms the “inner wall of the air flow path”, but the inner wall surface forming member 5 is mounted. In this case, this member forms the inner wall of the air flow path. The inner wall surface forming member preferably extends over the entire inner wall surface of the flow path member, but the inner wall surface forming member is not limited to this and may be a part depending on the degree of contamination.

  Using such an inhaler, a user inhales a medicine three times a day, for example. And the inner wall surface forming member 5 is replaced for each inhalation. In addition, the flow path member 3 and the mouthpiece 2 are used by exchanging them once a day, for example.

  The material of the inner wall surface forming member 5 is not particularly limited, but is preferably a material that can be easily attached to and detached from the flow path member 3 and does not cause a chemical reaction with the drug even if the drug adheres. Typically, a plastic material, a rubber material, etc. can be considered. A cylindrical member that is hollowed out as shown in the figure can be easily manufactured by resin molding or the like.

  By exchanging the inner wall surface forming member 5 for every inhalation, it is possible to discharge the medicine to the clean air flow path every time.

  As shown in FIG. 1, it is also preferable that the discharge head 6 a and the drug tank 6 b as the drug discharge unit are configured integrally with the inner wall surface forming member 5. This is because when the discharge head and the medicine tank are disposable each time, the inner wall surface forming member 5 can be removed and the discharge head and the like can be removed at once.

  The shape of the air flow path formed inside the flow path member 3 or the inner wall surface forming member 5 is a cylinder in FIG. 1, but is not particularly limited, and may be a prism.

  FIG. 3 is a flowchart for explaining the operation of the inhaler.

  First, the user combines the flow path member 3 and the mouthpiece 2 with the apparatus main body 1. Further, the user unites the mouthpiece 2 with the inner wall surface forming member 5 containing the discharge head 6a and the medicine tank 6b.

  The power switch is pushed by the user (step S001), and the power is turned on (step S002). When the power is turned on, the power display LED 11 is lit. The controller 8 executes initial setting inside the apparatus (step S003). Thereafter, whether or not the inner wall surface forming member 5 is attached is detected by an electric signal (step S004). If the inner wall surface forming member 5 cannot be detected, NO is determined, the process proceeds to step S007, the power is automatically turned off, and the process ends in step S008.

  If the inner wall surface forming member 5 can be detected, the determination is YES, and the process proceeds to step S005. In step S005, the pressure sensor 7 detects the patient's inhalation motion. If the patient's inhalation motion cannot be detected, NO is returned and the process returns to step S005. If the patient's inhalation motion can be detected, the determination is YES, and the process proceeds to step S006. In step S006, “in discharge” is displayed on the display unit 9, and control is performed so that a predetermined amount of the chemical liquid stored in the medicine tank 6b is discharged from the discharge head 6a, and the process proceeds to step S007. In step S007, the control unit 8 turns off the apparatus power, and the process ends in step S008. Since the apparatus power is turned off, the power display LED is extinguished and all displays on the LCD display unit are also turned off. After the end of inhalation, the user removes the inner wall surface forming member 5 containing the discharge head 6a and the medicine tank 6b from the mouthpiece 2 and the apparatus main body 1. For example, after inhaling three times a day, the user removes the mouthpiece 2 from the apparatus main body 1 and ends the operation.

(Embodiment 2)
FIG. 4 shows a perspective view of the inhaler representing the second embodiment of the present invention. FIG. 5 is a cross-sectional view of the inhaler shown in FIG.

  In the present embodiment, the inner wall surface forming member 5 shown in the first embodiment is changed to a thin film 12. The film 12 as the inner wall surface forming member is in close contact with the inner wall surface of the air flow path which is a part of the surface of the flow path member 3, and hardly affects the shape of the air flow path. Therefore, in the case of the air flow path provided with the film 12 or not, the air flow generated by inhalation does not change, and the same inhalation state can be realized. If the user after inhalation peels off the film 12 to which the drug is adhered, the adhered drug can be removed from the air flow path, and a new inner wall surface of the air flow path is formed after the film is peeled off.

  In that case, it is more preferable that the film 12 is provided by stacking a plurality of layers. By removing one film by one inhalation, the number of exchanges of the flow path member 3 and the mouthpiece 2 can be reduced.

  As shown in FIG. 4, the inhaler according to the present embodiment includes an inhaler main body 1, a flow path member 3 supported by the main body 1, and an inner wall surface forming member that is in close contact with the inner wall surface of the flow path member 3. As a film 12. The discharge head 6a and the drug tank 6b (which together form a drug discharge cartridge) are mounted in the apparatus main body 1, and the discharge head 6 is oriented so that the drug can be discharged into the air flow path.

  An airflow is generated in the flow path member 3 by the user's inhalation.

  As shown in FIG. 4, the film 12 has a roll shape, and is in close contact with the inner wall surface of the air flow path, which is a part of the surface of the flow path member 3, in multiple layers (FIG. 4). Shows two layers). The film 12 is provided with a film knob 14 for each layer so that the user can peel the film layer by layer. The user pulls the film knob 14 after inhalation to peel off the film for one round of the inner wall surface of the air flow path. In this way, it is possible to discharge the medicine into the clean air flow path at the next inhalation. It is better to make a notch 13 so that it is easy to peel off every layer.

  Then, when the end of the film becomes dirty due to suction, the flow path member 3 is replaced. Further, the medicine ejection cartridge 6 incorporating the ejection head 6a and the medicine tank 6b may be replaced once a week if the medicine tank 6b contains the medicine for one week. For example, when inhaling three times a day, if the film has 21 layers, the flow path member 3 and the medicine ejection cartridge 6 can be exchanged simultaneously.

  Since the electrical configuration of the inhaler and the operation order of the device are the same as those in the first embodiment, the description thereof is omitted.

  The method of tensioning the film is not particularly limited. As shown in FIG. 4, the structure connected in roll shape via the notch | incision 13 may be sufficient, and the film of each layer may each isolate | separate. The position of the film knob 14 is also arbitrary. In FIG. 4, although it provided in the inlet 2 side, you may provide in the air intake 12 side. In this case, since the film knob 14 does not obstruct the inhalation, it is a preferable mode.

  On the other hand, the film 12 that is in close contact with the inner wall surface of the air flow path can be provided up to the portion of the suction port 2. A cross-sectional view of such an inhalation device is shown in FIG. There is also a film 12 at the part where the user puts the mouth, and the film is peeled off after use, so that the suction port can be kept clean. In that case, from the viewpoint of easy peeling of the film, it is preferable to provide a plurality of film knobs per layer (film knobs 14 and 15).

(Embodiment 3)
FIG. 7 shows a perspective view of an inhaler according to a third embodiment of the present invention. FIG. 8 is a cross-sectional view of the inhaler shown in FIG.

  In the present embodiment, the film 12 is not peeled off as shown in the second embodiment, but the sheet 15 as the inner wall surface forming member is folded back in the air flow path after inhalation. The sheet 15 is preferably a plastic sheet or the like having a softness that can be easily folded by human power. The sheet 15 is in close contact with the inner wall surface of the air flow path, and hardly affects the shape of the air flow path. Therefore, in the case of the air flow path provided with the seat 15 or not, the air flow generated by inhalation does not change, and a similar inhalation state can be realized. When the user lifts the sheet knob 16 upward after inhalation, the sheet 15 is bent at the notch 17 and the surfaces forming the inner wall surface of the air flow path come into contact with each other at the time of inhalation. As a result, the drug adhered from the air channel inner wall surface is removed, and a new inner wall surface of the air channel is formed. The airflow that carries the drug at the next inhalation is generated on a clean inner wall surface to which the drug is not attached.

  FIG. 9 shows the inhaler viewed from the direction of the air intake 4 and shows a state in which the seat 15 is folded. Incisions are made at two opposing positions in the air flow path, and when the sheet 15 is lifted with a force equal to or greater than a predetermined force, the sheet 15 is bent at once.

  Although not shown, the sheet knob 16 is provided not only on the air intake port 4 side but also on the suction port 2 side, and if both knobs are lifted up, the sheet 15 can be folded back more easily. .

  An adhesive 18 may be applied to the upper half of the inner wall of the air flow channel with the notch 17 as a boundary. In this case, since the sheets 15 are bonded to each other after being folded back, it is possible to prevent such an adverse effect that the sheet 15 returns to its original state due to an erroneous operation after inhalation and is not noticed. The material of the adhesive 18 is not particularly limited, but it is preferable that the viscosity is such that the adhesive does not stick to the finger even if the finger touches it. Moreover, you may apply the thing like the back of the stamp which uses polyvinyl alcohol as a raw material. This has an adhesive force when it comes into contact with the liquid, so there is no adhesive force before inhalation, but it is advantageous because the adhesive force is generated by discharging the chemical liquid and adhering the chemical liquid to the sheet 15.

  The sheet 15 may be repeatedly folded as a plurality of layers. In that case, it is necessary to prepare a knob for each sheet.

(Embodiment 4)
In the second and third embodiments, a method of peeling or turning back a film or the like using a knob is adopted. However, the film may be automatically peeled off by a simple operation by a user.

  As an example of such an inhaler, a method of winding a film into a roll is illustrated.

  In FIG. 10, the part except the apparatus main body 1 is shown among the cross sections of the inhaler seen from the direction of the air intake 4. A winding roll 19 and a roll chamber 20 are installed on the upper outer side of the flow path member 3 and connected to the flow path member 3. The used film is wound around the roll 19 from the air flow path. The film is moved from the air flow path to the roll chamber 20 as follows. In the air flow path, the support plate 22 rotates to promote the movement of the film. The roll 19 has an introduction film 21, which is in contact with the support plate 22 in advance, and the used film is moved and joined to the introduction film by the rotation of the support plate 22. By pushing the potch 23, the nail in the potch 23 is released from the state where the used film is laminated, and the used film is joined to the introduction film on the support plate by the potch. At this time, a bonding agent may be provided in the vicinity of the film end so that the use surface film is bonded to the introduction film. The bonding agent may be an adhesive material or may be bonded by electrostatic action. A passage for the potch 23 is provided on the outer peripheral surface of the flow path member 3. As a result, the roll 19 is rotated and the support plate 22 is rotated in conjunction with it, and the used film is further moved in conjunction with the roll 19 and taken up by the roll 19. At this time, the block 24 separates the potch 22 from the film and returns to the initial position according to the rotation. When repeating a series of operations, the last used film becomes the introduction film for the next time.

  Control of the roll 19 may be performed by the user himself / herself, or may be automatically performed based on a program via a control unit after providing a rotation mechanism such as a motor. When the user operates, a roll lever is provided on the roll 19, and the roll 19 is rotated by rotating the lever, and the above-described operation is executed.

As a winding method, a winding method inside the flow path member 3 is illustrated in FIG.
Similarly to the case of FIG. 10, the used film is released from the laminated film by the potch 23, and the used film is moved by the potch 23 along the outer periphery of the support plate 22. By configuring the passage of the potch 23 and the block 24 in the same manner, the potch 22 returns to the initial position.

  As a result, the used surface film moves to the outer peripheral surface of the support plate 22, and when a series of operations are repeated, the used film is laminated on the outer peripheral surface of the support plate 22. This operation may also be automatically performed based on a program through a control unit after providing a rotation mechanism such as a motor or a gear rail as described above.

  In the method of winding inside the flow path member 3, a rail and lead member for guiding the potch 23 is provided on the outer peripheral surface of the flow path member 3 for one and a half and a half track can be switched and switched back. good. Thereby, the movement surface of the potch 23 can be changed to a new surface by moving the used surface film by one turn only by reciprocating the half circumference of the outer periphery of the flow path member 3.

(Embodiment 5)
FIG. 12 shows a cross-sectional view of an inhaler representing the fifth embodiment of the present invention. The inhaler according to the present embodiment includes a wiper 25 that is in contact with the inner wall surface of the flow channel as a means for removing the drug attached to the inner wall surface of the air flow channel formed by the flow channel member 3. The medicine attached to the inner wall surface of the air channel is wiped off by the wiper 25. The configuration of the wiper 25 is not particularly limited as long as the medicine can be wiped off. The wiper 25 may include an absorber that can inhale the medicine. In addition, a separate drug recovery mechanism may be provided as a blade-like structure.

  Note that a suction pipe having a suction pump may be employed instead of the wiper 25.

The wiper 25 is supported by a wiper support rod 26. The wiper support rod 26 is a spring mechanism at the bent portion in FIG. 12, and is biased so that the wiper 25 is always in contact with the inner wall surface of the air flow path. In FIG. 12, the state where the wiper 19 and the wiper support rod 20 are represented by solid lines is a state where the wiper 19 and the wiper support bar 20 are in contact with the inner wall surface of the flow path. Represents the stored state. When the inhalation of the user is finished and the medicine discharge is stopped, the control unit 8 transmits an operation signal to the stepping motor 27 supported by the motor support column 28. The wiper 25 rotates around the inner wall surface of the air flow path by the stepping motor 27 and wipes off the adhered medicine. (FIG. 13 is a block diagram showing the electrical configuration of the inhaler of this embodiment including the stepping motor 27.)
FIG. 13 is a view of the inhaler of FIG. 12 as viewed from the inlet 2 side. A part of the flow path member 3 and the suction port 2 has a structure lacking in order to accommodate the wiper 25, and a slide cover 29 is provided there. The wiper 25 is stored in a space near the slide cover 29 while the user is inhaling (FIG. 14).

  The control unit 8 rotates the stepping motor 27 so that the wiper 25 rotates once from the position (retracted position) of the wiper 25 shown in FIG. Control. Thereby, the wiper 25 is controlled so as to wipe off the medicine adhering to the inner wall surface of the flow path and return to the retracted position.

  Thus, the wiper 25 can keep the air channel inner wall surface in a clean state by repeating the rotation operation every time discharge is completed.

  For example, after inhaling three times a day, the user holds the slide knob 30 and slides the slide cover 29 in the direction of the suction port 2. The wiper 25 is wiped off with a towel or the like from the opening formed in the flow path member, and cleaned by alcohol washing or the like. Thereafter, the slide cover 29 is returned to its original position. Thereby, the wiper 25 can be returned to a clean state.

  Since the wiper 25 is for the purpose of wiping off the adhering medicine, the wiper 25 may be arranged so that the suction port 2 side can be wiped away from the ejection head 6a. However, as shown in FIG. 12, if the discharge head 6a is also long enough to be wiped off, it is advantageous because it can also wipe the air flow passage inner wall and also wipe the discharge port surface of the discharge head. That is, the wiper 25 preferably has a length from the position of the ejection head 6 a to the suction port 2 in the flow path member 3.

1 is an external view showing an inhaler according to an embodiment of the present invention. It is a block diagram explaining the electric constitution of the inhaler of FIG. It is a flowchart which shows operation | movement of an inhaler. It is a perspective view showing the inhaler by the 2nd Embodiment of this invention. It is sectional drawing of the inhalation device shown in FIG. FIG. 5 is a cross-sectional view of the inhaler, which is a modification of the inhaler shown in FIG. It is a perspective view showing the inhaler by the 3rd Embodiment of this invention. It is sectional drawing of the inhalation device shown in FIG. FIG. 7 shows the inhaler shown in FIG. 7 as viewed from the direction of the air intake 4 and is a state in which the seat 15 is folded back. It is sectional drawing of the air flow path vicinity in the inhalation device by the 4th Embodiment of this invention. It is sectional drawing of the inhaler which shows the modification of FIG. It is a perspective view showing the inhaler by the 5th Embodiment of this invention. It is the figure which looked at the inhaler of Drawing 12 from the inlet 2 side. FIG. 14 is an enlarged view of the retracted position of the wiper 19 in FIG. 13. FIG. 13 is a block diagram illustrating an electrical configuration of the inhaler illustrated in FIG. 12 including a stepping motor 21.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Apparatus main body 2 Mouthpiece 3 Flow path member 4 Air intake port 5 Inner wall surface forming member 6 Drug discharge cartridge 6a Discharge head 6b Drug tank 7 Pressure sensor 8 Control part 9 Display part 10 Power switch 11 LED
DESCRIPTION OF SYMBOLS 12 Film 13 Cut 14 Film knob 15 Sheet 16 Sheet knob 17 Cut 18 Adhesive 19 Roll 20 Roll chamber 21 Introducing film 22 Support plate 23 Potch 24 Block 25 Wiper 26 Wiper support rod 27 Stepping motor 28 Motor support pillar 28 Slide cover 30 Slide Knob

Claims (11)

A drug discharge device that discharges a drug to be inhaled by a user via an inlet,
A flow path member connected to the suction port and capable of forming an air flow path for guiding the drug to the suction port by inhalation of the user;
A drug ejection device comprising: an inner wall surface forming member for forming an inner wall of the air flow channel, which can be detachably mounted in the flow channel member.   The medicine ejection device according to claim 1, further comprising a medicine ejection unit that ejects the medicine to the air channel formed in the channel member.   The medicine ejection device according to claim 2, wherein the medicine ejection section is configured integrally with the inner wall surface forming member.   The medicine ejection device according to any one of claims 1 to 3, wherein the inner wall surface forming member has flexibility.   3. The medicine ejection device according to claim 1, wherein the inner wall surface forming member has a film that can be in close contact with the flow path member. 4.   6. The medicine ejection device according to claim 5, wherein the film is in close contact with the flow path member in a state where a plurality of layers are stacked.   The medicine ejection device according to claim 1, wherein the inner wall surface forming member has a sheet that is folded back in the air flow path. A drug discharge device that discharges a drug to be inhaled by a user via an inlet,
A flow path member connected to the suction port and capable of forming an air flow path for guiding the drug to the suction port by inhalation of the user;
A medicine discharge section for discharging the medicine to the air flow path formed in the flow path member;
A medicine ejection device comprising: a removing means for removing the medicine ejected from the medicine ejection section and attached to the inner wall of the air flow path.   9. The medicine ejection device according to claim 8, wherein the removing means is a wiping means for wiping the inner wall of the air flow path after the medicine is ejected.   10. The medicine ejection apparatus according to claim 9, wherein the wiping means wipes the inner wall of the air flow path and also wipes the ejection port surface of the medicine ejection section.   The medicine according to any one of claims 2 to 10, wherein the medicine discharge section includes an electrothermal conversion element that imparts thermal energy to the medicine or an electromechanical conversion element that imparts mechanical energy to the medicine. Discharge device.

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