JPH08206209A - Administrator for nasal cavity - Google Patents

Abstract

PURPOSE: To surely prevent the backflow of medicines and to make it possible to dose the medicine by a simple dosing operation. CONSTITUTION: A capsule holder 2 having a capsule housing hole 5 is provided with a pump part 18 on its inflow side and is provided with a medicines spraying part 22 having two medicine flow passages 27, 27 branched from the capsule housing hole 5 and spraying ports 28, 28 on its outflow side. The medicine spraying part 22 is internally provided with a boring means 32. A backflow preventive part 17 which captures the medicines falling from the capsule in the capsule housing hole 5 and return the medicines to the capsule housing hole 5 side by the air from the pump part 18 at the time of administration is disposed between the capsule housing hole 5 and the pump part 18. Then, the medicines in the capsule are dosed into the patient's left and right nasal cavities from the respective spraying ports 28 when the capsule is bored with a through-hole by the boring means 32 and the air is supplied from the pump part 18. The backflow of the medicines in the capsule is prevented by the backflow preventive part 17 and, therefore, the need for a valve mechanism is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nasal drug dispenser suitable for intranasal administration of powdered medicine.

[0002]

2. Description of the Related Art In general, a method of treating a patient with nasal allergy, asthma or the like by administering a powdered drug through the nasal cavity has been adopted. Further, in this treatment method, a powdery drug filled in a capsule is administered into the nasal cavity by using a dedicated device (medication for nasal cavity).

Further, as an apparatus used for this treatment method, there is known one shown in Japanese Patent Application Laid-Open No. 59-34267 (hereinafter referred to as "prior art").

In this conventional apparatus, a pump portion is provided on the air inflow side of the cylindrical member, and a concave portion into which the capsule is inserted is formed on the air outflow side of the cylindrical member.
The capsule housing portion is formed by fitting the tip portion into the concave portion, and the air introduction passage is formed from the capsule housing portion toward the pump portion. Further, one valve mechanism is provided at the bottom of the cylindrical member, and the valve mechanism allows air to flow from the pump section toward the capsule housing section while allowing the air to flow backward from the capsule housing section side. Is being blocked. Further, another valve mechanism is provided on the other side of the pump portion, and by the valve mechanism, air is supplied to the capsule housing portion through the air introduction passage when the pump portion is pressed,
When the pump unit is restored, air is sucked into the pump unit from the outside. On the other hand, a state in which a cap that fits the cylindrical member and the tip end portion are provided, and a pin that extends in the axial direction is provided in the cap, and the concave portion of the cylindrical member and the tip end portion that has the opening portion are fitted together The capsule is perforated by fitting the cap with.

The prior art has the above-mentioned structure. First, in the case of making a hole in the capsule for preparation of medication, the capsule filled with the drug in powder form is inserted into the concave portion of the cylindrical member. After that, the tip portion is fitted and the capsule is mounted in the capsule housing portion. Then, the cap is mounted on the cylindrical member so that the pin is inserted into the opening of the distal end portion, so that the pin provided in the cap makes a hole on both axial sides of the capsule.

Next, in order to administer the drug, the cap is removed from the cylindrical member and the tip portion is inserted into one nasal cavity of the patient,
By pressing the pump portion, air from the pump portion is circulated into the capsule through the air introduction passage and one valve mechanism while the other valve mechanism is closed, and the drug in the capsule is opened through the opening portion. Through the patient's nasal cavity. Further, when the pressing force of the pump section is released, another valve mechanism opens to take in air into the pump section. At the time of returning the pump unit, one valve mechanism is closed to prevent the drug in the capsule from flowing back together with the air from the capsule containing unit side.

[0007] Then, the above-mentioned operation is alternately exchanged for the left and right nasal cavities and repeated to administer the drug to the patient.

Further, in the prior art, since the nasal cavity is alternately dosed to the left and right nasal cavities, a gap is provided between the capsule container and the capsule, and the pump section is pressed only once. The medicine in the capsule is not entirely administered by the operation, and the medicine in the capsule is administered by the operation of about 4 times only in one nasal cavity.

[0009]

By the way, in the above-mentioned device according to the prior art, the left and right nasal cavities are dosed one by one. Also, the pressing of the pump portion and the insertion of the tip portion into the nasal cavity must be repeated, and the dispensing operation is troublesome.

Further, when the capsule is bored, the removable cap is attached to the cylindrical member, so that if the cap is lost, it cannot be used as a medicine dispenser.

Further, one valve mechanism provided on the bottom of the cylindrical member and another valve mechanism provided on the other side of the pump portion are provided.
Since there are two valve mechanisms, there are problems that the number of parts is increased and the overall configuration is complicated, resulting in a decrease in productivity in terms of assembly workability.

Further, although the one valve mechanism provided at the bottom of the cylindrical member prevents the drug in the capsule containing portion from flowing back to the pump side, the drug is added to the valve as the drug dispenser is used. The valve mechanism must be frequently cleaned because it adheres to and accumulates on the valve mechanism, which is troublesome to handle, and if cleaning is neglected and the sealability of the valve deteriorates due to the accumulation of chemicals, the The chemicals flow back to the pump side, and not only must the pumps be cleaned frequently, but the amount of chemicals in the capsules will decrease below the specified amount.
There is a problem that it is not possible to administer the prescribed amount of drug required to the patient.

The present invention has been made in view of the above-mentioned various problems of the prior art, and provides a nasal drug dispenser capable of surely preventing the backflow of a drug and administering the drug by a simple administration operation. Is intended.

[0014]

In order to solve the above problems, the nasal drug dispenser according to the invention of claim 1 has a storage hole for holding a capsule filled with a powdery medicine inside. A holding part and a pump part provided on the air inflow side of the capsule holding part for supplying air to the capsule holding part, and the drug supplied in the capsule to the left side of the patient by the air supplied from the pump part, In order to spray into the right nasal cavity, a drug spraying part having two separate spray ports with branching into two drug passages on the air outflow side of the capsule holding part, and the inside of the capsule holding part In order to make a through hole in the capsule in the axial direction, a hole-piercing tool composed of a pin movably provided in the drug spraying section in the axial direction, and provided between the accommodation hole of the capsule accommodation section and the pump section, In the accommodation hole Formed by constituted by a medicine powder backflow prevention unit to return to the accommodation hole side chemicals captured during captures chemicals falling from the capsule dosing.

Further, as in the invention of claim 2, the drug powder backflow preventing portion is provided so as to open toward the capsule holding portion side in order to capture the drug falling from the capsule in the capsule holding portion. Further, it may be composed of a medicine trapping portion in a bottomed space and an air jetting portion located on the opening side of the medicine trapping portion and jetting air from the pump into the medicine trapping portion.

Further, as in the invention of claim 3, the air ejecting portion is provided with an air passage connected to the pump portion, and an annular portion located on the outer periphery of the medicine trapping portion on the opening side and connected to the air passage. It may be configured by an air chamber and an annular nozzle portion that ejects air from the annular air chamber into the medicine capturing portion.

[0017]

In the structure of the first aspect of the present invention, at the time of making a hole, after holding the capsule in the capsule holding portion, the pin of the hole making tool is moved to the capsule side, and a through hole is made in the capsule by the tip of the pin. Further, during administration, air is supplied from the pump unit, and this air is circulated in the capsule through a through hole having a hole, and the capsule is left with the drug through each drug passage of the drug spray unit. The drug can be simultaneously administered to the left and right nasal cavities of the patient by delivering the drug from the right spray port to the left and right nasal cavities of the patient, respectively. Furthermore, when the capsule is pierced or when air is sucked into the pump part, the drug that falls from inside the capsule can be captured by the drug backflow prevention part, and the captured drug can be captured by the air from the pump part when the drug is dispensed. Can be delivered to the patient's left and right nasal cavities with the drug in the capsule.

Further, according to the structure of the second aspect of the present invention, the chemicals dropped from inside the capsule are accumulated on the bottom side of the chemical trapping portion and are prevented from flowing back to the pump side. On the other hand, at the time of administration, air is jetted and supplied from the pump unit into the medicine capturing unit, so that the medicine captured in the medicine capturing unit can be returned to the capsule accommodation unit side together with air.

Further, according to the third aspect of the invention, during administration, the air from the pump portion is supplied to the annular air chamber through the air passage and jetted and supplied from the annular nozzle portion into the medicine capturing portion. An air flow is supplied from the entire circumference into the medicine capturing portion, and a turbulent flow is positively formed inside. As a result, the drug trapped in the drug trapping portion rises and is returned to the capsule container side.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

First, a first embodiment of the nasal drug dispenser according to the present invention will be described with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a nasal cavity drug dispenser according to the present embodiment. The nasal cavity drug dispenser 1 is located axially centrally and holds a capsule K together with a drug spraying section 22, as shown in FIG. A capsule holder 2 which will be described later as a capsule holding portion, a pump portion 18 which is provided at an air inflow side of the capsule holder 2 and supplies air to the capsule holder 2, and an air outflow side of the capsule holder 2. Located and provided,
A part thereof constitutes a capsule holding part together with the capsule holder 2, and a drug spraying part 22 for spraying a drug to the left and right nasal cavities of a patient, and provided in the drug spraying part 22,
The capsule holder 2 is generally composed of a punching tool 32 for punching the capsule K housed in the capsule holder 2.

Reference numeral 2 denotes a capsule holder which constitutes a capsule holding portion. The capsule holder 2 is formed of a resin material in a cylindrical shape having a small diameter, and is positioned on the other side in the axial direction (air outflow side) as shown in FIG. Male screw portion 3 is formed, and one side capsule hole 4 located at the inner circumference and opening to the other end face is formed. The one side capsule hole 4 is integrated with the other side capsule hole 25 described later. Capsule hole 5
To form. Further, an air supply passage 6 opening to one end face is formed on one axial side (air inflow side) of the one side capsule hole 4, and an external thread portion 11 of a joint member 10 and a screw thread to be described later are screwed on the outer peripheral side. A mating female screw portion 7 is formed to project to one side. Further, on one side of the capsule holder 2, a backflow prevention portion 17 is provided together with a medicine capturing hole 12, a nozzle portion 13, an air discharge hole 14, a disk-shaped air chamber 15, an air passage 16 and the like which will be described later.
The annular groove 8 constituting the is formed.

Here, the annular groove 8 is formed so as to surround the air supply passage 6 as shown in FIG. 4, and the inner peripheral side thereof becomes an inclined surface 8A which is gradually inclined inward toward the lower side, The inclination angle of the inclined surface 8A is set so that the ejection angle of the air ejected from the nozzle portion 13 is an angle at which a turbulent flow can be effectively generated in the medicine capturing hole 12. The annular groove 8 has an opening on one side closed by the other end surface of the joint member 10 to form an annular air chamber 9.

Reference numeral 10 denotes a joint member provided on the other side of the capsule holder 2. The joint member 10 is formed of a resin material in a cylindrical shape having the same diameter as the capsule holder 2, and the other side in the axial direction (air outflow side). ) Is formed with a male screw portion 11 located on the outer peripheral side and screwed into the female screw portion 7 of the capsule holder 2, and the central portion is opened toward the other side so as to face the air supply passage 6. A medicine capturing hole 12 having a bottomed space is formed. Further, the opening end of the medicine capturing hole 12 has a larger diameter than the tip of the inclined surface 8A of the annular groove 8, so that the pump portion 1 is provided in the medicine capturing hole 12 between the tip of the inclined surface 8A and the tip.
An annular nozzle portion 13 is formed to jet and supply the air from 8. Further, on one side of the joint member 10, an air discharge hole 14 that opens into the pump portion 18 is formed in the axial direction, and the other end side of the air discharge hole 14 becomes a disk-shaped air chamber 15. The disk-shaped air chamber 15 communicates with the annular air chamber 9 (annular groove 8) via a plurality of, for example, four air passages 16, 16, ... (Only three are shown). Then, the annular air chamber 9, the nozzle portion 13, the air discharge hole 14, the disk-shaped air chamber 1
5. Each air passage 16 constitutes an air jet portion.

Here, the chemical capturing hole 12 and the annular air chamber 9
The (annular groove 8), the nozzle portion 13, the air discharge hole 14, the disc-shaped air chamber 15, and the air jetting portion including the air passage 16 constitute a backflow prevention portion 17, and the backflow prevention portion 17 includes the capsule K. The chemicals that fall during the drilling are trapped in the chemical trapping holes 12, and the chemicals that try to flow back to the pump section 18 side when the pump section 18 returns (when air is sucked in) accumulate on the bottom side of the chemical trapping holes 12. Then, only air is gradually made to flow from the nozzle portion 13 into the pump portion 18 through each air passage 16, the disk-shaped air chamber 15, and the air discharge hole 14. On the other hand, at the time of medication, air supplied from the pump portion 18 into the air discharge hole 14, the disk-shaped air chamber 15, and the air passages 16 into the annular air chamber 9 is introduced into the medicine capturing hole 12 through the annular nozzle portion 13. The turbulent flow is generated in the medicine trap hole 12 by jetting and supplying the medicine toward the surface of the capsule to lift the trapped medicine, and the medicine is returned from the air supply passage 6 to the capsule housing hole 5 side together with the air. It is like this.

Reference numeral 18 denotes a pump portion provided on the joint member 10, and the pump portion 18 is made of a rubber material and has an opening 1
8A, the bottom portion 18B, and the peripheral pressing portion 18C are formed into a bottomed cylindrical shape, and the opening portion 18A has the opening portion 18A.
A suction valve 19 described below is attached to the center of the bottom portion 18B.

Reference numeral 19 denotes a suction valve, which is provided at the bottom portion 18B of the pump portion 18, has a suction passage 20 located at the center, and a valve body 21 for opening and closing the suction passage 20.
And the valve body 21 is a pressing portion 1 of the pump portion 18.
When 8C is pressed, the valve is closed, and when the pressing portion 18C is released from the suction, the valve is opened and air is sucked into the pump portion 18 from the outside.

Reference numeral 22 denotes a chemical spraying portion provided on the air outflow side of the capsule holder 2 as shown in FIG. 2. The chemical spraying portion 22 is made of a resin material, and its outer shape has one side in the axial direction of the capsule holder 2. And a small diameter portion 22A having the same diameter as that of the large diameter portion 22B.
A pair of nasal cavity insertion portions 23, 23 are formed to project. Further, the small-diameter portion 22A is formed with a female screw portion 24 which is screwed to the male screw portion 3 of the capsule holder 2 on the inner peripheral side thereof, and the end face thereof is provided with the one-side capsule hole 4 and the capsule housing hole 5. The other side capsule hole 25 is formed, and a medicine outflow passage 26 communicating with the other side capsule hole 25 and a substantially U-shaped branch from the medicine outflow passage 26 are formed in the inner portion of the other side capsule hole 25. Two chemical passages 2
7 and 27 are formed, and the tip ends of the respective drug passages 27 are located inside the nasal cavity insertion portion 23 and serve as independent spray ports 28, 28.

Further, a pair of axially extending and axially extending holes 32 are provided in the middle of the respective chemical passages 27 extending in the chemical spraying portion 22 in the radial direction so as to accommodate the punching tool 32 in the axial direction. The punching tool mounting hole 29 having the long holes 29A and 29A (see FIG. 5) is formed. Then, in the vicinity of the chemical outflow passage 26 of the punching tool mounting hole 29, a pin insertion hole 30 through which a pin 34 described later is inserted, is located between the pin insertion hole 30 and each chemical passage 27, and a seal rubber is provided. A seal mounting step 31 for mounting 36 is formed on the same axis.

Here, by screwing the male screw portion 3 of the capsule holder 2 and the female screw portion 24 of the chemical spraying portion 22 together, the one-side capsule hole 4 and the other-side capsule hole 25 cooperate with each other to receive a capsule containing hole. 5, the axial dimension L0 of the capsule accommodating hole 5 is made slightly shorter than the axial dimension LK of the capsule K so that the capsule K is firmly fixed in the axial direction of the capsule accommodating hole 5. There is.

Reference numeral 32 is a hole forming tool mounting hole 2 of the chemical spraying section 22.
9 shows a drilling tool provided in 9, wherein the drilling tool 32 is
Disc portion 33A and a pair of projecting portions 33 that protrude radially outward from the disc portion 33A and are fitted into the long holes 29A, 29A.
B and 33B are integrally formed with the pusher 33 (see FIG. 5), the base end side is fixed to the central portion of the disk portion 33A of the pusher 33, and the tip end side extends axially toward one side. In order to press the pusher 33 and the pin 34 that has become a perforated portion 34A that is cut diagonally to one side in the axial direction,
And a spring 35 provided in the hole attachment hole 29. In addition, the protruding portion 33 of the pusher 33
B and 33B are oblong holes 29A and 29 of the drilling tool mounting hole 29.
It projects to the outside in the state of being displaceable in the axial direction in A.
Further, in the pin 34, the punched portion 34A at the tip is located in the seal rubber 36 in a state where the pusher 33 is arranged on one side by the spring 35.

Here, in the punch 32, the pusher 33
By displacing each protrusion 33B in the direction of the arrow A in FIG. 6 along the elongated hole 29A, the perforated portion 34A of the pin 34 penetrates the capsule K in the capsule housing hole 5 in the axial direction, and the capsule K The through hole H can be easily formed in the hole (see FIG. 8).

36 is a seal mounting step portion 3 of the chemical spraying section 22.
1 shows the seal rubber attached to the
Is made of a rubber material having elasticity, and by surrounding the perforated portion 34A of the pin 34, it is powder-tight with respect to the drug flowing through the drug outflow passage 26 and each drug passage 27 and slides on the pin 34. It is movable and prevents chemicals from entering the hole-piercing tool mounting hole 29 through the pin insertion hole 30.

The nasal drug dispenser 1 according to the present embodiment is constructed as described above. Next, the capsule piercing operation and the drug dispensing operation will be described with reference to FIGS. 7 to 11.

First, the capsule K is inserted into the capsule hole 4 on one side of the capsule holder 2, and the male screw portion 3 of the capsule holder 2 and the female screw portion 24 of the chemical spraying portion 22 are screwed to each other to form one side of the capsule holder 2. The capsule K is housed in a capsule housing hole 5 formed by the capsule hole 4 and the other side capsule hole 25 of the chemical spray unit 22 as shown in FIG.

Then, as shown in FIG. 8, by manually displacing each of the projecting portions 33B of the pusher 33 constituting the punching tool 32 toward the lower side (the direction of arrow A in FIG. 6),
The perforated portion 34A of the pin 34 is removed from the axial direction of the capsule K through the medicine outflow passage 26, and through holes H, H are formed on both axial sides of the capsule K. At this time, the chemicals in the capsule K are removed from the air supply passage 6 by the perforated portion 34A of the pin 34.
Although it drops toward the side, this medicine is captured by the medicine capturing hole 12.

Further, the pusher 33 is automatically returned by the spring 35 after drilling, and as shown in FIG. 9, with the through holes H, H opened on both sides of the capsule K in the axial direction, the pusher 33 is connected to the medicine outflow passage 26. It is possible to communicate with each chemical passage 27. The periphery of the perforated portion 34A of the pin 34 is held in a powder-tight manner by the seal rubber 36. Further, as described above, the chemicals falling from the capsule K when the holes are made by the pins 34 are captured by the chemical capturing holes 12,
It is prevented from falling to the pump portion 18 side.

As described above, at the time of drilling the nasal drug dispenser 1 according to this embodiment, the through holes H, H can be easily drilled by the drilling tool 32 in the axial direction of the capsule K, and the drug catching hole 12 is formed. With this, it is possible to reliably capture the chemicals that drop during drilling.

Next, the operation during medication will be described.

First, the left and right nasal cavity insertion portions 23, 23 of the drug spraying section 22 are inserted into the left and right nasal cavity of the patient, respectively,
As shown in FIG. 10, by pressing the pressing portion 18C of the pump portion 18 in the direction of arrow P, the air is discharged from the air discharge hole 14,
It is supplied from the nozzle portion 13 into the medicine capturing hole 12 through the disk-shaped air chamber 15, each air passage 16 and the annular air chamber 9, and is directed from the medicine capturing hole 12 through the air supply passage 6 to the capsule holder 2. Supplied.

At this time, the air supplied from the pump unit 18 is jetted from the entire circumference of the annular air chamber 9 into the medicine capturing hole 12 through the nozzle unit 13, and as shown in FIG. A turbulent flow can be surely generated in the medicine capturing hole 12, the medicine captured in the medicine capturing hole 12 can be swirled up, and this medicine can be supplied together with air toward the capsule holder 2. As a result, it is possible to reduce the amount of the drug left in the nasal medication device 1, and to reliably administer the prescribed amount of the drug filled in the capsule K to the patient,
It is possible to reduce the frequency of cleaning the nasal medication device 1.

The air from the pump section 18 then flows from the inside of the capsule K into the nasal cavity of the patient through each drug passage 27, the left and right spray ports 28. At this time, the chemicals in the capsule K are agitated by the air flowing into the capsule K,
This medicine is sent to the nasal cavity of the patient together with the medicine and air captured in the medicine capturing hole 12.

Further, the chemical spray passage 22 has a chemical outflow passage 2
6 are formed into two drug passages 27, 27, and the tip of each of the drug passages 27, 27 is inserted into the left and right nasal cavities of the patient, respectively.
Due to the formation of 28), the drug to be delivered together with the air can be evenly divided in each drug passage 27 and simultaneously administered to the left and right nasal cavities of the patient.

The axial dimension L0 of the capsule accommodating hole 5 according to this embodiment is formed to be slightly shorter than the axial dimension LK of the capsule K, so that the looseness of the capsule K in the accommodating hole 5 is reduced. In addition, the lower through hole H and the air supply passage 6 and the upper through hole H and the chemical outflow passage 26 are tightly adhered to each other so that all the air from the pump portion 18 can be flown into the capsule K, and the chemical can be discharged. Since the drug can be guided from each through hole H to the drug outflow passage 26, the amount of the drug sprayed from each spray port 28 is stabilized, and the pump portion 18 is pressed only once or twice. Most of this can be delivered into the patient's left and right nasal passages. As a result, it is possible to eliminate the inconvenience when the patient administers the medication.

On the other hand, the pump unit 1 shown by the chain double-dashed line in FIG.
When 8 is returned, the pressing portion 18C is indicated by an elastic force R
Direction, the valve body 21 of the suction valve 19 opens,
Air is sucked into the pump portion 18 from the outside through the suction passage 20.

When the pump portion 18 is returned, each spray port 28, each chemical passage 27, each chemical outflow passage 26, the capsule receiving hole 5, the air supply passage 6, the chemical trapping hole 12, the annular air chamber 9, each air. Although the air flows backward through the passage 16, the disk-shaped air chamber 15, and the air discharge hole 14 and is sucked into the pump portion 18, the medicine inside the capsule K passes through the air supply passage 6 and the bottom side of the medicine capturing hole 12 is reached. The air can be trapped on the pump portion 18 side and only the air can be sucked into the pump portion 18 side. As a result, it is possible to prevent the chemical in the capsule K from flowing back to the pump portion 18 side when the pump portion 18 is returned.

Thus, according to the present embodiment, the medicine spraying section 22 has two medicine passages 27, 27 separated from the medicine outflow passage 26 and a nasal cavity insertion portion 23, which is inserted into the left and right nasal cavities of the patient. 23 (spray ports 28, 28) are formed, the axial dimension L0 of the capsule housing hole 5 is made slightly shorter than the axial dimension LK of the capsule K, and the capsule K is firmly fixed. Side through hole H and air supply passage 6, and upper through hole H and chemical outflow passage 26
To make sure that the air from the pump unit 18 is completely encapsulated
Since the drug can be introduced into the inside and the drug can be guided from each through hole H to the drug outflow passage 26, most of the drug can be evenly administered into the nasal cavity of the patient with a small dosing operation at the time of dosing. As a result, as in the prior art, the medication unit is inserted into each nasal cavity of the patient, and the pump unit 18 is repeated about three times without repeated administration to the left and right nasal cavities many times.
By pressing, the medicine can be administered to the patient, and the dispensing operation can be simplified.

Further, since the hole-piercing tool 32 is incorporated in the chemical spraying section 22, it is possible to dispose the capsule K in the capsule accommodating hole 5 and then to displace the pusher 33 in the axial direction. Through holes H, H can be easily formed in the hole. Further, since the hole punching tool 32 is built in the chemical spraying section 22, there is no fear of losing it as compared with the prior art in which a pin is provided on the cap,
It is also safe to handle.

Further, the medicine catching hole 12 of the backflow prevention portion 17 can catch the medicine falling when the capsule K is opened, and also the medicine falling from the capsule K by the backflowing air when the pump portion 18 is returned. Therefore, it is possible to eliminate the valve mechanism used in the prior art, which allows the air to flow from the pump portion to the capsule housing portion and prevents the air from flowing backward from the capsule housing portion side. By reducing the number of parts, productivity can be significantly improved.

Moreover, in the backflow prevention unit 17 of this embodiment,
By supplying air from the pump portion 18 from the entire circumference into the medicine capturing hole 12 from the annular air chamber 9 through the nozzle portion 13 during medication, a turbulent flow is positively generated in the medicine capturing hole 12. Since the drug captured in the drug capturing hole 12 can be reliably blown up and supplied to the capsule holder 2 together with air, the amount of the drug remaining in the nasal drug dispenser 1 can be reduced, The prescribed amount of the medicine filled in the capsule K can be reliably administered to the patient, and the number of times of cleaning the nasal medication device 1 can be significantly reduced as compared with the conventional technique.

Further, a seal rubber 36 made of a rubber material having elasticity is provided on the seal mounting step 31 of the chemical spraying section 22, and the pin 34 is formed by the seal rubber 36.
Since the perforation portion 34A is surrounded, the chemical passages 27 and the punching tool mounting holes 29 can be powder-tightly separated, and the chemicals flowing through the chemicals passages 27 can be stored in the punching tool mounting holes 29. It is possible to prevent the chemical from entering and reduce the amount of chemicals remaining in the chemical container 1.

Next, FIG. 12 shows a second embodiment. The feature of this embodiment is that the nasal cavity insertion parts 23, 2 of the chemical spraying part 41 are provided.
A contact portion 42 having an arc surface is formed between the three portions so that the nasal cavities of the patient come into contact with each other. In this embodiment, the same components as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

In this embodiment, which is constructed as described above, it is possible to obtain substantially the same operational effects as those of the first embodiment described above. However, in particular, in this embodiment, the abutting portion against which the patient's nasal cavity abuts is contacted. By providing 42, it is possible to eliminate variations in the insertion dimension of the nasal cavity insertion portion 23 into the nasal cavity, and always perform constant medication.

In each of the above-described embodiments, the capsule holder 2 and the joint member 10 are separate members, and the male screw portion 11 and the female screw portion 7 are screwed to each other. May be integrated, or
The left and right members may be vertically formed and fixed to each other by an adhesive means or a welding means.

[0056]

As described above in detail, according to the invention of claim 1, after the capsule is held in the capsule holding portion, the pin of the hole making tool is moved to the capsule side, and the tip of the pin makes a through hole in the capsule. After that, air is supplied from the pump unit and the drug in the capsule is sent to the left and right nasal cavities of the patient from each drug passage of the drug spray unit through the spray port together with air. The left and right nasal cavities can be simultaneously and evenly dosed with the drug, and the annoyance of separately administering the left and right nasal cavities can be eliminated, and the spraying efficiency can be improved and the patient's dosing operation can be simplified. Moreover, it is possible to make a hole in the capsule simply by moving the hole making tool, there is no fear of losing the pin, and the handling is safe.

Further, the drug that flows back from the capsule when the capsule is being pierced or when the air is sucked into the pump part is captured by the drug backflow prevention part, and the captured drug is supplied to the capsule holding part by the air from the pump part during administration. Since the drug is delivered to the left and right nasal cavity of the patient together with the drug in the capsule through the drug spraying unit, the prescribed amount of drug in the capsule can be administered to the patient, and the drug can be stored in the pump unit. Inflow can be prevented, and the frequency of cleaning work of the pump part can be reduced. Moreover, the valve mechanism used in the prior art for preventing the backflow of the chemical can be eliminated, and the configuration can be simplified and the productivity can be improved.

According to the invention of claim 2, the medicine dropped from the capsule is deposited on the bottom side of the medicine capturing section to prevent backflow to the pump section side, and at the time of administration,
Since the air from the pump unit is jetted and supplied into the medicine capturing unit through the air jetting unit, and the medicine captured in the medicine capturing unit is returned to the capsule accommodation unit side together with the air, a prescribed amount of the medicine is supplied to the patient. In addition to reliable administration,
It is possible to reduce the frequency of cleaning work such as the pump part.

Further, according to the third aspect of the present invention, the air from the pump portion is supplied to the annular air chamber through the air passage at the time of medication, and the air is ejected from the annular nozzle portion into the medicine capturing portion. An air flow can be supplied from the entire circumference into the medicine capturing section to actively form a turbulent flow inside, and the medicine trapped in the medicine capturing section can be reliably blown up to effectively and effectively encapsulate the capsule containing section. Can be returned to the side.

[Brief description of drawings]

FIG. 1 is a side view showing a nasal drug dispenser according to a first embodiment.

FIG. 2 is a longitudinal sectional view showing the nasal medication device according to the first embodiment.

FIG. 3 is an enlarged vertical sectional view showing a capsule holder, a joint member and the like in FIG.

FIG. 4 is a cross-sectional perspective view showing the structure of the backflow preventing portion by disassembling the capsule holder and the joint member.

5 is a cross-sectional view as seen from the direction of arrows VV in FIG.

FIG. 6 is an exploded perspective view showing a state before the capsule is housed in the nasal cavity medicine dispenser.

FIG. 7 is a vertical cross-sectional view showing a state in which a capsule is housed in a nasal drug dispenser.

FIG. 8 is a longitudinal sectional view showing a state in which a through hole is opened in the axial direction of the capsule by moving a pin of the hole making tool.

FIG. 9 is a vertical cross-sectional view showing a state in which the pin is returned to the original position after the through hole is made in the capsule with the pin of the hole making tool.

FIG. 10 is a vertical cross-sectional view showing a state in which the drug in the capsule is sprayed by pressing the pump portion.

11 is a vertical cross-sectional view at the same position as FIG. 3 showing a state in which air is supplied into the medicine capturing hole via an air jetting portion and the medicine in the medicine capturing hole is supplied to the capsule housing portion side.

FIG. 12 is a longitudinal sectional view showing a nasal drug dispenser according to a second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Medication device for nasal cavity 2 Capsule holder (capsule holding part) 4 One side capsule hole 5 Capsule accommodation hole 8 Annular groove 9 Annular air chamber 10 Joint member 12 Chemicals capturing hole (chemicals capturing part) 13 Nozzle part (Air ejection part) 14 Air discharge hole (air jetting part) 15 Disc-shaped air chamber (air jetting part) 16 Air passage (air jetting part) 17 Backflow prevention part 18 Pump part 22,41 Chemical spraying part 25 Other side capsule hole 27 Chemical path 28 Spraying Mouth 32 Drilling tool 34 Pin K Capsule H Through hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazunori Ishizeki 1370 Onna, Atsugi, Kanagawa Pref. Within Unisia Jecs Co., Ltd. (72) Akira Yanagawa 5-3 Fujimigaoka, Tsuzuki-ku, Yokohama, Kanagawa

Claims (3)

[Claims] 1. A capsule holding part having a receiving hole for holding a capsule filled with a powdery medicine inside, and an air inflow side of the capsule holding part for supplying air to the capsule holding part. Since the pump unit provided and the air supplied from the pump unit spray the drug in the capsule toward the left and right nasal cavities of the patient, two drug passages are provided on the air outflow side of the capsule holding unit. In order to make a through hole in the capsule in the capsule holding part and the capsule in the capsule holding part in the axial direction, the drug spraying part is provided so as to be branched, and the tip is provided so as to be movable in the axial direction. A drug backflow, which is provided between a hole-forming tool made of a pin and the accommodation hole of the capsule accommodation section and the pump section, captures the medicine falling from the capsule in the accommodation hole and returns the captured medicine to the accommodation hole side at the time of administration. Prevention A nasal medication device comprising a stopper. 2. The drug powder backflow prevention unit captures the drug falling from the capsule in the capsule holding unit, so that the drug powder backflow prevention unit is provided in the bottomed space so as to open toward the capsule holding unit side. The nasal drug dispenser according to claim 1, further comprising: an air ejecting portion located on the opening side of the medicine capturing portion and ejecting air from the pump into the medicine capturing portion. 3. The air ejecting portion, an air passage connected to the pump portion, an annular air chamber located on the outer circumference of the opening side of the medicine capturing portion and connected to the air passage, and from the annular air chamber. The drug delivery device for nasal cavity according to claim 2, comprising an annular nozzle portion for ejecting air into the medicine capturing portion.