JPH09253211A - Inhalation type medicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately dose a prescribed amount of medical powder to a patient by preventing external spillage of the medical powder by air reversed through an inhalation port. SOLUTION: A holder sliding hole 8 is formed in a holder housing member 5 and a mobile holder 12 is so arranged to move to the other side until air paths 9 and 10 are made to communicate with a capsule housing chamber 14 when air is inhaled into the holder sliding hole 8 at an inhalation port 4 or to move to one side until a shielding is made between the air paths 9 and 10 and the capsule housing chamber 14. Therefore, when air is inhaled at the inhalation port 4, as the mobile holder 12 is positioned at a dosing position, medical powder in a capsule K can be sucked through the air paths 9 and 10. On the other hand, when a patient happens to cough holding the inhalation port 4 in his mouth, the mobile holder 12 is positioned at a shielding position by the reflux air, thereby enabling the prevention of inflow of the reflux air into the capsule from the outflow side air paths 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inhaler-type inhaler suitable for use in injecting a powdered drug (medicine powder) into the lungs by inhaling a patient's breath.

[0002]

2. Description of the Related Art Generally, a method of administering a drug to the lungs of an asthmatic patient includes a method of injecting a drug solution, a method of inhaling with a liquid aerosol sprayer, and a powdery form filled in a drug powder storage chamber or a capsule. A method of inhaling a drug (hereinafter referred to as medicinal powder) is used.

Among these drug administration methods for asthma patients,
In the method of inhaling the medicinal powder filled in a capsule, the patient has an inlet port in which a mouth is provided, and one side is opened to the atmosphere side and the other side is provided with a ventilation path opened to the inlet port through a capsule storage chamber. Using the inhaler described above, the capsule is mounted in the capsule storage chamber of the inhaler, and a hole communicating with the air passage is formed in the capsule using a piercing needle or the like. Then, in this state, the medicine powder in the capsule is discharged into the inhalation port by the airflow passing through the ventilation passage by sucking the breath in addition to the inhalation port,
It is inhaled into the patient's lungs.

[0004]

By the way, in the inhaler for capsules according to the prior art described above, the medicinal powder in the capsule is inhaled through the air passage by inhaling the breath from the inhalation port.

However, the patient may cough at the time of inhalation of the medicinal powder, and in this case, the air blown into the inhalation port flows backward through the air passage and the medicinal powder in the capsule flows out to the outside. . As a result, there is a problem that the amount of the drug powder in the capsule is reduced, the prescribed amount of drug powder cannot be inhaled, and the efficacy of the drug powder is reduced.

The present invention has been made in view of the above-described problems of the prior art, and prevents the drug powder in the drug powder storage chamber or the capsule from flowing out by the air that flows back into the suction port, and thus the drug powder storage chamber. Another object of the present invention is to provide an inhalation-type medication device in which the drug powder in a capsule can be reliably administered to a patient.

[0007]

In order to solve the above-mentioned problems, an inhalation-type medication device according to the invention of claim 1 has a holder sliding hole on one side in the axial direction and a medicinal powder on the other side. The main body of the drug dispenser serving as an intake port, an inflow side ventilation passage having one side open to the atmosphere side and the other side open to the valve body sliding hole of the main body of the drug dispenser, and the valve body of the main body of the drug dispenser on one side. It has an outflow-side air passage opening to the sliding hole and the other side opening to the suction port, and has a drug powder storage chamber inside, and is slidably inserted in the holder sliding hole of the drug dispenser body in the axial direction. , When inhaling the medicinal powder, the medicinal powder storage chamber is communicated with the inflow side ventilation passage and the outflow side ventilation passage, and when the backflow occurs from the suction port, the medicinal powder storage chamber is inflow side ventilation passage or outflow side ventilation. It is composed of a movable holder which is displaced so as to be blocked from the road.

With this configuration, when inhaling the medicinal powder contained in the medicinal powder storage chamber, the patient displaces the movable holder by sucking air through the suction port to accommodate the medical powder. The chamber can be communicated with the inflow-side air passage and the outflow-side air passage, and the medicinal powder in the medicinal powder storage chamber can be inhaled into the lungs through the respective ventilation passages and the suction port. On the other hand, when the patient coughs while holding the inhalation port and causes air to flow back into the inhalation port, the movable holder is displaced to block the drug powder storage chamber from the inflow or outflow passages. Therefore, the backflow air can prevent the chemical powder in the chemical powder storage chamber from flowing out to the atmosphere side through the inflow side ventilation passage.

The inhaler-type drug dispenser according to the invention of claim 2 has a holder sliding hole on one side in the axial direction, and a drug dispenser main body with the other side serving as a suction port for sucking drug powder, and one side. An inflow side air passage opening to the atmosphere side and the other side opening to the holder sliding hole of the drug dispenser body, and an outflow side ventilation opening one side to the holder sliding hole of the drug dispenser body and the other side to the suction port A capsule housing chamber that houses a capsule filled with medicinal powder therein is inserted slidably in the holder sliding hole of the main body of the drug dispenser in the axial direction, and when the medicinal powder is inhaled, the capsule is inserted. The accommodation chamber is communicated with the inflow side ventilation passage and the outflow side ventilation passage, and when the backflow occurs from the suction port, the capsule accommodation chamber is displaced so as to be blocked from the inflow side ventilation passage or the outflow side ventilation passage. A movable holder and the main body of the drug dispenser,
The movable holder comprises a capsule punching tool for making a hole in the capsule-holding chamber of the movable holder so that the capsule can communicate with the inflow-side air passage and the outflow-side air passage.

With this configuration, the capsule accommodated in the capsule accommodating chamber of the movable holder is provided with a hole that allows the capsule to communicate with the inflow side air passage and the outflow side air passage. Then, when inhaling the drug powder in the capsule pierced by the piercing tool, the patient holds the inhalation port and inhales air, thereby displacing the movable holder and setting the capsule accommodating chamber as the inflow side air passage. It is possible to communicate with the outflow side air passage, and the medicinal powder in the capsule can be inhaled into the lung through each air passage and the suction port. On the other hand, if the patient coughs while holding the inhaler and causes air to flow back into the inhaler,
The movable holder can be displaced to block the capsule chamber from the inflow side air passage or the outflow side air passage, and this backflow air prevents the drug powder in the capsule from flowing out to the atmosphere side through the inflow side air passage. it can.

According to a third aspect of the present invention, the movable holder is slidably inserted into the valve body accommodating hole of the main body of the drug dispenser, and the inside of the cylinder body is a bottomed capsule accommodating chamber. One side communication hole located on the outer peripheral side of the cylindrical body and communicating with the inflow side ventilation passage and the other side communication hole communicating with the outflow side ventilation passage, and the holder sliding provided on one side of the cylindrical body. A positioning part for positioning the cylinder at a dosing position where the one side communication hole and the inflow side air passage communicate with each other by contacting the one side open end of the hole, and the other side communication hole and the outflow side air passage communicate with each other, The cylinder is provided on the other side and receives the pressure of the air blown into the suction port so that the one side communication hole of the cylinder is displaced from the inflow side air passage and the other side communication hole is the outflow side air passage. It is composed of a pressure receiving portion which is displaced to a blocking position deviated from the pressure receiving portion.

With this construction, when air is sucked in through the suction port, the pressure in the suction port becomes lower than the atmospheric pressure, and the pressure difference causes the cylinder to move to the other side (suction port side). By bringing the positioning portion into contact with the one opening end of the holder sliding hole, the cylinder is communicated with the one side communication hole and the inflow side air passage, and the other side communication hole and the outflow side air passage are communicated with each other. It can be positioned at the prescribed dosing position. On the other hand, when air is blown into the suction port, the pressure in the suction port becomes higher than the atmospheric pressure due to the momentum of the blown air,
This pressure is received by the pressure receiving portion, and the cylinder is moved to one side (atmosphere side), and the one side communication hole of the cylinder is displaced from the inflow side ventilation passage and the other side communication hole is displaced from the outflow side ventilation passage. It can be displaced to the blocking position.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an inhalation-type medication device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a main body of a dispenser which is the base of an inhaler, and the main body 1 of the dispenser is composed of a suction piece 2 and a holder accommodating member 5 which will be described later.

Reference numeral 2 denotes a suction piece formed in a substantially cylindrical shape. The suction piece 2 is located on one side and has a holding cylinder portion 3 into which the holder accommodating member 5 is inserted and held, and the holding cylinder portion 3. And a suction port 4 which will be described later disposed on the other side of the
On the outer peripheral side of the holding tubular portion 3, a guide tubular portion 3A that movably supports a support portion 18 of a hole punching tool 17, which will be described later, is provided to project radially outward. Further, an annular step portion 3B into which the stopper portion 5A of the holder housing member 5 is fitted is formed on one side of the holding tubular portion 3, and the fitting tubular portion 4A of the suction port 4 is fitted to the other end side. The fitting step portion 3C is formed. Further, the holding cylinder portion 3 is located inside the guide cylinder portion 3A and corresponds to the pin hole 3D corresponding to the pin insertion hole 9B of the inflow side air passage 9 and the pin insertion hole 10B of the outflow side air passage 10 which will be described later. The pin holes 3E are formed in the radial direction.

Reference numeral 4 denotes a suction port which is provided on the other side of the holding tubular portion 3 and constitutes a suction piece 2 together with the holding tubular portion 3. One end of the suction port 4 has a fitting step portion of the holding tubular portion 3. A fitting tubular portion 4A that is detachably fitted to 3C is integrally formed. The suction port 4 is held in the mouth when the patient inhales the drug powder.

Reference numeral 5 denotes a holder accommodating member inserted and attached in the holding cylinder portion 3. The holder accommodating member 5 is formed in a substantially columnar shape, and is fitted to an annular step portion 3B of the holding cylinder portion 3 on the outer circumference at one end side. An annular stopper portion 5A for positioning the holder accommodating member 5 in the holding cylinder portion 3 by combining is formed.
Further, a taper-shaped capsule insertion guide 6 is formed on one end side of the holder accommodating member 5 so that the diameter gradually decreases toward the other side, and the outer peripheral surface on the other side of the holder accommodating member 5 gradually decreases toward the other side. It is a tapered surface portion 7.

Further, a holder sliding hole 8 is formed in the central portion of the holder accommodating member 5 so as to penetrate therethrough in the axial direction. The holder sliding hole 8 is arranged in the sliding cylinder 13 of a movable holder 12 which will be described later in the axial direction. Slidably supported on one end side of the holder accommodating member 5 on the other side. Further, as shown in FIG. 2, the holder sliding hole 8 is recessed so that guide grooves 8A, 8A extending axially at positions displaced from the respective air passages 9, 10 by about 90 degrees in the circumferential direction face each other. The slide cylinder 13 is provided in each of the guide grooves 8A.
The engaging projection 13A is engaged so as to be movable in the axial direction.

Reference numerals 9 and 9 denote two inflow side air passages provided on one side of the holder accommodating member 5, and each of the inflow side air passages 9 is provided.
Are inflow passages 9A, 9A formed in the axial direction of the holder housing member 5 so as to be located on the outer peripheral side of the holder sliding hole 8 and open to the capsule insertion guide 6, and the holders communicating with the respective inflow passages 9A. It is composed of pin insertion holes 9B, 9B formed in the radial direction so as to open in the sliding hole 8, and each of the pin insertion holes 9B communicates with the pin hole 3D of the holding cylinder portion 3.

Reference numerals 10 and 10 denote two outflow-side air passages provided on the other side of the holder accommodating member 5. Each of the outflow-side air passages 10 is located on the outer peripheral side of the holder sliding hole 8 and is tapered. Outflow passages 10A, 10A formed in the holder housing member 5 so as to cut out the surface portion 7, and a pin insertion hole 10B formed in the radial direction so as to communicate with each of the outflow passages 10A and open in the holder slide hole 8. , 10B, and each pin insertion hole 1
0B communicates with the pin hole 3E of the holding cylinder portion 3.

Here, each of the inflow side ventilation passages 9 allows the outside air to flow in from the inflow passage 9A when the air is sucked in from the suction port 4, and the air is introduced from the pin insertion hole 9B into the capsule accommodating chamber 14 described later. It is supplied in the capsule K housed in. Further, each of the outflow side air passages 10 discharges air that flows out from the capsule K together with the drug powder from the outflow passage 10A to the suction port 4 side through the pin insertion hole 10B.

Reference numerals 11 and 11 denote two auxiliary ventilation passages provided on the holder accommodating member 5 located on the outer peripheral side of the holder sliding hole 8, and each auxiliary ventilation passage 11 is surrounded by the ventilation passages 9 and 10. The holder accommodating member 5 is formed so as to penetrate axially through the holder accommodating member 5 at a position offset by about 90 degrees in the direction. Each of the auxiliary ventilation passages 11 supplements the flow rate of the air flowing when breathing in, thereby eliminating the breathing difficulty at this time.

Reference numeral 12 denotes a movable holder provided in the holder sliding hole 8, and the movable holder 12 is a sliding cylinder 1 described later.
3, the stopper 15 and the pressure receiving portion 16 are generally included.

Numeral 13 is a sliding cylinder which is a cylindrical body slidably inserted in the holder sliding hole 8 in the axial direction. The sliding cylinder 13 is a predetermined stroke from the holder sliding hole 8. Engaging projections 13A, 13A (which are formed in a long cylindrical shape and which engage the guide grooves 8A of the holder sliding hole 8 on the outer peripheral surface thereof to position the sliding cylinder 13 in the circumferential direction ( Only one of them is shown) formed to extend in the axial direction. In addition, the inner peripheral side of the sliding cylinder 13 is closed by a blocking plate 13B that is located closer to the other side and forms a part of the pressure receiving portion 16, so that the blocking plate 13B is provided in the sliding cylinder 13 at the bottom. The bottomed capsule housing chamber 14 is formed so as to open to one side.
The capsule housing chamber 14 accommodates the capsule K inserted from the one end side opening, and the inside of the capsule K is filled with powdered medicine (hereinafter referred to as medicinal powder).

Further, the slide cylinder 13 is located on the outer peripheral side of the capsule accommodating chamber 14 and can communicate with the pin insertion holes 9B of the respective inflow side air passages 9 at the dosing position of the movable holder 12 which will be described later. Side communication holes 13C, 13C and each outflow side air passage 1
The other side communication hole 13D, which can communicate with the 0 pin insertion hole 10B,
13D are provided in the radial direction.

Reference numeral 15 denotes a stopper formed at one end of the sliding cylinder 13. The stopper 15 is formed so as to radially project from the outer peripheral surface of the sliding cylinder 13, the outer peripheral end of which is formed by the holder sliding hole 8. The holder slide hole 8 comes into contact with the opening end on one side, that is, the inner peripheral edge of the capsule insertion guide 6. Further, a plurality of notches 15A, 15A, ... (Only two are shown) are formed in the stopper 15 so as to be spaced apart from each other in the circumferential direction, and each notch 15A is formed when the slide cylinder 13 is inserted into the holder slide hole 8. In addition, the stopper 15 is for elastically reducing and deforming the stopper 15.

The stopper 15 is provided on the movable holder 12
When it moves to the other side (suction port 4 side), it comes into contact with the inner peripheral edge of the capsule insertion guide 6, so that as shown in FIG. The movable holder 12 is positioned at a dosing position in which the other side communication hole 13D communicates with the pin insertion hole 10B of each outflow side air passage 10 and the other side communication hole 13D communicates with the pin insertion hole 9B.

Reference numeral 16 is a pressure receiving portion formed at the other end of the sliding cylinder 13, and the pressure receiving portion 16 is formed in a flange shape in which the other end of the sliding cylinder 13 is expanded, and an air pressure is provided on the outer peripheral side thereof. The outflow passage 1 of each outflow side air passage 10 in order to secure the flow of the chemical powder.
The cutout portions 16A, 16A are formed at the positions corresponding to 0A, and the communication holes 16B, 16A are formed at the positions corresponding to the auxiliary ventilation passages 11.
16B are formed.

The pressure receiving portion 16 receives the pressure of the air blown into the suction port 4 to move the movable holder 12
Is displaced to one side (atmosphere side). Further, the pressure receiving portion 16 comes into contact with the other end surface of the holder accommodating member 5 when the movable holder 12 is moved to one side, so that each one side communication hole 13C of the sliding cylinder 13 has each one as shown in FIG. It is completely displaced from the pin insertion hole 9B of the inflow side air passage 9, and each other side communication hole 13D is a pin insertion hole 10B of each outflow side air passage 10.
It also serves as a stopper that is positioned at a blocking position that is completely displaced from the position.

The movable holder 12 thus constructed is
If the patient inhales air through the inlet 4, the inlet 4
Since the internal pressure becomes lower than the atmospheric pressure, as shown in FIG. 3, the stopper 15 moves to the other side by the pressure difference at this time to the dispensing position where it abuts the inner peripheral edge of the capsule insertion guide 6. Thereby, each one side communication hole 13 of the sliding cylinder 13
C and the pin insertion hole 9B of each inflow side air passage 9 communicate with each other, and the other side communication hole 13D and the pin insertion hole 1 of each outflow side air passage 10
0B, the air flowing in from each inflow side air passage 9 flows into the capsule K through each one side communication hole 13C, and each other side communication hole 13 together with the drug powder in the capsule K.
It is allowed to flow from D to the suction port 4 side through each outflow side air passage 10.

On the other hand, when the patient coughs while holding the suction port 4 and blows out air into the suction port 4 to cause backflow, the backflow air is received by the pressure receiving portion 16 and the suction port 4 is held. 4 is higher than the atmospheric pressure, the pressure difference at this time causes the pressure receiving portion 16 to move to one side to the cut-off position where it abuts against the other end surface of the holder housing member 5. As a result, each one-side communication hole 13C of the sliding cylinder 13 is completely displaced from the pin insertion hole 9B of each inflow side air passage 9, and each other side communication hole 13D is pin-inserted hole of each outflow side air passage 10. 10B, the outlet side air passages 10, the inlet side air passages 9 and the capsule housing chamber 14 are completely displaced from each other.
It is designed to cut off between

Next, 17 shows a hole punching tool for making a hole in the capsule K housed in the capsule housing chamber 14,
The punching tool 17 includes a support portion 18 movably supported in the guide tubular portion 3A, pins 19 and 19 having a sharp tip at the base end side fixed to the support portion 18, and the support portion 18. The return spring 20 is provided between the holding cylinder portion 3 and the holding cylinder portion 3. In the return spring 20, the tips of the pins 19 slightly enter the pin insertion holes 9B and 10B after the capsule K is drilled. The support 18 and the pins 19 are returned to the initial position.

The punching tool 17 is provided in the movable holder 12
Is positioned at the dosing position, the support portion 18 is pushed into the guide tube portion 3A against the return spring 20, and each pin 1
By inserting 9 into the pin insertion holes 9B and 10B,
The sharpened tip is passed through the capsule K in the capsule housing chamber 14, and through holes H, H, ... (See FIGS. 3 and 4) are formed at both ends in the axial direction of the capsule K so as to radially pass therethrough. It is like this. Further, when the pressing force on the support portion 18 is removed, the support portion 18 and each pin 19 are retracted to the initial position by the urging force of the return spring 20.

The inhalation-type medication device according to the present embodiment has the above-described structure, and next, the preparation operation until the patient inhales the medicinal powder, the flow of air and the medicinal powder in the medication device at the time of inhalation, etc. Will be described.

First, the capsule K is placed in the drug dispenser,
The preparatory operation until the through holes H are opened in the capsule K will be described.

First, the capsule K is inserted into the capsule accommodating chamber 14 from one side until it abuts on the blocking plate 13B. At this time, since the movable holder 12 is pushed to the other side by the operation of inserting the capsule K, the movable holder 12 is positioned at the dosing position by the stopper 15, and each one side communication hole 13C of the slide cylinder 13 and each inflow hole. Pin insertion hole 9B of the side air passage 9
Communicate with each other, the other side communication hole 13D and each outflow side air passage 10
Communicates with the pin insertion hole 10B.

In order to make a through hole H in the capsule K, the pins 19 are inserted by inserting the support portion 18 of the punch 17 along the guide tube portion 3A at the dosing position of the movable holder 12. Each communication hole 13 from holes 9B and 10B
Four through holes H are formed in the capsule K accommodated in the capsule accommodating chamber 14 by inserting the pins 19 along C and 13D. Further, after the four through holes H are formed in the capsule K, the support portion 18 and the pins 19 are moved to the return spring 20.
It is returned to the initial position by the urging force of.

Next, the flow of air and drug powder in the inhalation-type medication device when the patient inhales drug powder will be described.

First, when the patient holds the inhalation port 4 and inhales a breath, as shown by the arrow in FIG.
The air that has flowed in from A flows through the pin insertion hole 9B through each one side communication hole 13C of the sliding cylinder 13 into the capsule housing chamber 14, and then flows into the capsule K through the one side through holes H, H. To do. Then, the air flowing into the capsule K forcibly diffuses the drug powder in the capsule K to mix the drug powder into the air.

In this way, the air containing the drug powder in the capsule K flows out to the pin insertion hole 10B of each outflow side air passage 10 through the through holes H, H on the other side and each other side communication hole 13D. Then, it is discharged from the outflow passage 10A into the suction port 4 and reaches the lungs of the patient through the mouth and trachea.

Further, at the time of inhalation of this medicinal powder, air flows to the suction port 4 side through each auxiliary air passage 11, so that the flow rate of the air flowing at the time of inhaling is supplementarily increased. The breathlessness is eliminated.

On the other hand, when the patient coughs during the inhalation of the medicinal powder, that is, when air is blown out into the inhalation port 4 as shown by the arrow in FIG. 4, the backflow air moves the pressure receiving portion 16 to one side. Since the pressure in the suction port 4 becomes higher than the atmospheric pressure while being pushed toward, the movable holder 12 moves to one side to the blocking position by the pressure receiving portion 16. As a result, the one side communication hole 13C of the sliding cylinder 13 is completely displaced from the pin insertion hole 9B and the other side communication hole 13D is completely displaced from the pin insertion hole 10B. The side air passage 9 and the capsule storage chamber 14 are shut off from each other, and the outflow of the drug powder in the capsule K due to the backflow air from each outflow side air passage 10 is blocked.

Further, at this time, the backflow air which has lost its place due to the blocking between the outflow side air passages 10, the inflow side air passages 9 and the capsule accommodating chamber 14 by the movable holder 12,
It is escaped to the outside from each auxiliary ventilation passage 11.

Further, when the patient's coughing is relieved and the breath is taken in again to suck the medicinal powder again, the pressure in the suction port 4 becomes lower than the atmospheric pressure. The drug powder in the capsule K can be continuously inhaled by automatically moving from the blocking position to the dosing position by the stopper 15.

Thus, according to the present embodiment, when air is sucked in through the suction port 4 to suck the drug powder, the movable holder 12 can be moved to the other side by the pressure difference and positioned at the dosing position. , Each of the air passages 9 in the capsule K,
When the patient coughs while holding the suction port 4 and blows air into the suction port 4 to make it flow backward, the pressure receiving portion 16 receives the pressure of the backward flow air. At the same time, the pressure difference at this time can move the movable holder 12 to one side and displace it to the blocking position.
The outflow side air passages 10, the inflow side air passages 9 and the capsule housing chamber 14 are shut off from each other so that backflow air is generated in each of the outflow side air passages 10.
Can be prevented from flowing into the capsule housing chamber 14.
Therefore, for example, it is possible to prevent the drug powder in the capsule K from flowing out to the outside due to the air blown out when coughing, so that it is possible to prevent the drug powder in the capsule K from decreasing and efficiently inhale the drug powder. The efficacy of medicinal powder can be enhanced by administering a prescribed amount of medicinal powder to a patient.

When the patient's cough is relieved and the medicinal powder is to be inhaled again, all that is required is to hold the suction port 4 and inhale.
Since the movable holder 12 can be automatically moved from the blocking position to the medication position, the drug powder in the capsule K can be continuously inhaled, and the handling can be facilitated.

Further, when the air is made to flow back into the suction port 4, the backflow air has lost its place due to the disconnection between the respective outlet side ventilation passages 10, the inlet side ventilation passages 9 and the capsule accommodating chamber 14 by the movable holder 12. Since the air can be released to the outside from each auxiliary air passage 11, it is possible to prevent the backflowing air from blowing the medication device due to coughing, and it is possible to improve handling and hygiene.

In the above-described embodiment, at the shut-off position of the movable holder 12, each one-side communication hole 13C is shut off from each inflow side air passage 9, and the other side communication hole 13D is shut out from each outflow side air passage 10. However, instead of this, for example, by forming one of the communication holes on one side or the communication hole on the other side as a long hole in the axial direction, the movable holder is placed at the cutoff position. Even when it is displaced, it may be in continuous communication with the inflow side air passage or the outflow side air passage.

Further, in the above-mentioned embodiment, the inflow side ventilation passages 9, the outflow side ventilation passages 10 and the auxiliary ventilation passages 11 for conveying the medicinal powder are formed in the number of two, respectively, but the present invention is not limited to this. Not limited to, each air passage has suction force of the patient (spiral capacity)
According to the above, the number may be adjusted to 1, 4, etc.

Further, in the above embodiment, the capsule storage chamber 1
Although the capsule K filled with the medicinal powder is accommodated in the container 4, instead of this, for example, the medicinal device main body is provided with a medicinal powder containing chamber, and the medicinal powder containing chamber is directly filled with the medicinal powder. However, the medicinal powder may be inhaled.

Further, in the above embodiment, the holding tubular portion 3 is provided with the fitting stepped portion 3C and the suction port 4 is provided with the fitting tubular portion 4A, and the fitting stepped portion 3C and the fitting tubular portion 4A are interposed therebetween. Holding tube part 3
In the above description, the suction port 4 is detachably fitted.
The holder accommodating portion and the suction port may be detachable by screwing, or may be detachable by engaging the pin and the groove.

[0052]

As described above in detail, according to the invention of claim 1, when inhaling the drug powder contained in the drug powder containing chamber, the patient sucks air by holding the intake port.
The movable holder can be displaced so that the drug powder storage chamber can communicate with the inflow side air passage and the outflow side air passage, and the drug powder in the drug powder storage chamber can be inhaled into the lungs through the air passage and the suction port. it can.
On the other hand, when the patient coughs while holding the inhalation port and causes air to flow back into the inhalation port, the movable holder is displaced to block the drug powder storage chamber from the inflow or outflow passages. Therefore, the backflowing air can prevent the chemical powder in the chemical powder storage chamber from flowing out to the atmosphere side. As a result, the medicinal powder in the medicinal powder storage chamber can be prevented from decreasing and the medicinal powder can be efficiently inhaled, and the efficacy of the medicinal powder can be enhanced by administering a prescribed amount of the medicinal powder to the patient.

According to the second aspect of the present invention, when the drug powder in the capsule is inhaled, the capsule housed in the capsule housing chamber of the movable holder is communicated with the inflow side air passage and the outflow side air passage by the punching tool. After making a possible hole, the patient holds the suction port and sucks air, thereby displacing the movable holder so that the capsule accommodating chamber communicates with the inflow side air passage and the outflow side air passage. This allows air to flow into the capsule from the inflow side air passage, and the inflowing air allows the medicinal powder in the capsule to be inhaled into the lung from the outflow side air passage via the suction port. On the other hand, when the patient coughs while holding the inhalation port and causes air to flow back into the inhalation port, the movable holder can be displaced to shut off the capsule chamber from the inflow side air passage or the outflow side air passage. From
The backflowing air can prevent the drug powder in the capsule from flowing out to the atmosphere side. As a result, the medicinal powder in the capsule can be prevented from decreasing and the medicinal powder can be efficiently inhaled, and the efficacy of the medicinal powder can be enhanced by administering a prescribed amount of the medicinal powder to the patient.

According to the third aspect of the invention, when the air is sucked in from the suction port, the pressure in the suction port becomes lower than the atmospheric pressure. Therefore, due to this pressure difference, the cylinder is moved to the other side (suction port side). By moving and bringing the positioning portion into contact with one opening end of the holder sliding hole, the tubular body is connected to the one-side communication hole and the inflow-side air passage, and the other-side communication hole and the outflow-side air passage are connected. The patient can be dosed by being positioned at the communicating dose position. On the other hand, when air is blown into the suction port, the pressure in the suction port becomes higher than the atmospheric pressure due to the force of the blown air, so this pressure is received by the pressure receiving unit and the cylinder is moved to one side ( The cylinder can be positioned at a blocking position where the one-side communication hole is displaced from the inflow-side air passage and the other-side communication hole is displaced from the outflow-side air passage, and the medicinal powder is prevented from flowing out by the backflow air. Can be prevented.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an inhalation-type medication device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a holder housing member and a movable holder in FIG.

FIG. 3 is an enlarged cross-sectional view of a main part in FIG. 1 showing a state in which the drug powder in the capsule is being inhaled.

FIG. 4 is an enlarged cross-sectional view of an essential part seen from the same position as in FIG. 3, showing a state in which air is backflowed into the suction port.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dispenser main body 4 Suction port 8 Holder sliding hole 9 Inflow side ventilation path 10 Outflow side ventilation path 12 Movable holder 13 Sliding cylinder (cylindrical body) 13C One side communication hole 13D Other side communication hole 14 Capsule storage chamber 15 Stopper ( Positioning part) 16 Pressure receiving part 17 Drilling tool K Capsule H Through hole

Continued on the front page (72) Inventor Kazunori Ishiseki 1370 Onna, Atsugi-shi, Kanagawa Prefecture Inside Unisex Jex Co., Ltd. (72) Inventor Yoshiyuki Tanizawa 1370 Onna, Atsugi-shi, Kanagawa Prefecture Inside Unisex Jex Co., Ltd. (72) Inventor Akira Yanagawa 5-3 Fujimigaoka, Tsuzuki-ku, Yokohama, Kanagawa

Claims (3)

[Claims] 1. A drug dispenser body having a holder sliding hole on one side in the axial direction, the other side being a suction port for inhaling drug powder, and one side opening to the atmosphere side and the other side of the drug dispenser body. An inflow side air passage opening to the valve body sliding hole, an outflow side air passageway having one side opening to the valve body sliding hole of the medication dispenser body and the other side opening to the suction port, and a drug powder storage chamber inside. It is inserted into the holder sliding hole of the drug dispenser body so as to be slidable in the axial direction, and communicates the drug powder storage chamber with the inflow-side air passage and the outflow-side air passage when inhaling the drug powder. Then, the inhalation-type drug dispenser including a movable holder that is displaced so as to block the drug powder storage chamber from the inflow side air passage or the outflow side air passage when a backflow occurs from the suction port. 2. A drug dispenser body having a holder sliding hole on one side in the axial direction, the other side being a suction port for inhaling drug powder, and one side opening to the atmosphere side and the other side of the drug dispenser body. An inflow side air passage opening to the holder sliding hole, an outflow side air passage having one side opening to the holder sliding hole of the medication dispenser body and the other side opening to the suction port, and a capsule filled with medicinal powder inside. A capsule accommodating chamber for accommodating a capsule is accommodated in the holder sliding hole of the main body of the drug dispenser so as to be slidable in the axial direction, and the capsule accommodating chamber is vented to the inflow side and the outflow side when inhaling drug powder. A movable holder that is in communication with the passage and is displaced so as to block the capsule housing chamber from the inflow side air passage or the outflow side air passage when a backflow occurs from the suction port; The inflow side air passage is provided in the capsule in the capsule holding chamber of the movable holder. An inhaler-type medication device, which comprises a perforator for forming a hole that can communicate with the outflow-side air passage. 3. The cylindrical body, wherein the movable holder is slidably inserted into the valve body accommodating hole of the drug dispenser main body, and the inside is a bottomed capsule accommodating chamber, and the outer peripheral side of the cylindrical body. At one side and the other side communication hole communicating with the inflow side air passage and the other side communication hole communicating with the outflow side air passage, and one side opening of the holder sliding hole provided on one side of the cylindrical body. A positioning portion for positioning the cylinder at a dosing position where the one side communication hole and the inflow side air passage communicate with each other by contacting the end and the other side communication hole and the outflow side air passage communicate with each other; And a shut-off position where the one side communication hole is displaced from the inflow side air passage and the other side communication hole is displaced from the outflow side air passage by receiving the pressure of air blown into the suction port. The inhalation-type medication device according to claim 2, which is configured by a pressure receiving portion that is displaced to a position.