JP2015008697A - Powdered drug spraying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a powdered drug spraying device that can spray and diffuse powdered drug without using an inconvenient medium such as gas or a solvent, eliminates the need for dissolving the drug in a solvent, eliminates the need of applying heat for diffusion, eliminates the need for a fixing power supply, is portable and simple.SOLUTION: A powdered drug spraying device 1 includes: a cylindrical guide member 21 attached to an upper end opening part 13 of a container body 11; a gas generating agent 43 received in a cylindrical member part 26 of a cylindrical guide member 21; a cylindrical breaking member 31 held to the cylindrical guide member 21 movably toward a sealing part 41, and provided with a pressing part 37 breaking the sealing part 41 and making the gas generating agent 43 fall into water in the container body 11; a piston 63 hermetically sliding to a lower side slide inner circumferential wall 53 of a cylinder part 51 provided on an upper end of the cylindrical breaking member 31, and defining a gap to an upper side enlarged diameter inner circumferential wall 55 of the cylinder part 51; and a powdered drug 30 received on the piston 63.

Description

  The present invention relates to a powder medicine injection device for jetting and diffusing a powder medicine such as an insecticide.

  Conventionally, in order to get rid of the pests present in the room, water is used as a one-time-use type pesticide that sprays the entire amount of the drug in the room, including a smoke type that burns and uses the pesticide composition. Various types are known, including those that do not use fire, such as a heat transpiration type, an aerosol type sprayed with a propellant, and a pump type that sprays a solution with a pump.

A smoking type insecticide is a combination of an insecticidal component, an exothermic agent, and an auxiliary heat agent placed in a container. When ignited with a starter, insecticidal components and burning agents burn. At that time, the finer particles of the insecticidal component spread as smoke in the room (see Patent Document 1).
A heat transpiration type insecticide diffuses an insecticidal component by the force of a foaming agent from a container heated by reaction heat such as water and calcium oxide (see Patent Document 2).
Aerosol-type insecticides are those in which an insecticidal component is dissolved in a liquefied gas such as LP gas and compressed into a pressure-resistant container, and the insecticidal component is ejected in a fine mist. In the single use type, the push button is irreversibly locked, and the whole amount of the medicine is injected (see Patent Document 3).
A pump-type insecticide is an insecticide dissolved in a solvent and stored in a liquid container. The action of a pumping pump connected to the liquid container causes the insecticide to be sprayed in a fine mist (see Patent Document 4). ).

JP 2003-289788 A JP 2007-326851 A JP 2006-35065 A JP2011-11181A

However, the conventional single-use type insecticide described above has a problem that the insecticidal components that can be used are limited. That is, smoking type and heat transpiration type insecticides are easily affected by heat because the insecticidal components are heated to extremely high temperatures, and the insecticidal components used may be limited. In addition, since aerosol type and pump type insecticides are sprayed after dissolving the insecticidal component in a solvent or liquefied gas, it is not possible to use an insecticidal component with low solubility or an unstable insecticidal component in a liquid state.
In addition, when these types of insecticides burn, or when the foaming agent decomposes, a medium other than the insecticide, such as a solvent, decomposition gas (acid gas), or liquefied gas, is contained in the room. Be sprayed. Therefore, prior preparation such as covering a precision device such as a personal computer or an audio device, covering a fire alarm, or extinguishing a gas water heater is necessary at the time of use.

  Accordingly, the present invention has been made in view of such a situation, and suppresses the decomposition of the powdered drug due to the heat of the drug, and the powdered drug can be used without using a medium such as a decomposition gas, a liquefied gas, or a solvent. It is an object of the present invention to provide a powdery medicine injection device that can perform injection diffusion.

The object of the present invention described above is achieved by the following configuration.
(1) a container body having an upper end opening for containing a liquid;
A lid portion that closes the upper end opening, a cylindrical body portion that is formed through the lid portion so that both open ends face the inside and outside of the container body, and the cylindrical body portion that extends toward the inside of the container body. A cylindrical guide member that has a sealing portion that seals the lower end opening thereof and is attached to the upper end opening portion,
A gas generating agent accommodated in the cylindrical portion to generate a reaction gas by reacting with the liquid in the container body;
A pressing portion that is held by the cylindrical guide member so as to be movable toward the sealing portion and that breaks the sealing portion and drops the gas generating agent into the liquid in the container body is provided at the lower end portion. A cylindrical breaking member,
The cylinder part provided at the upper end of the cylindrical breaking member slides in an airtight manner on the lower sliding inner peripheral wall of the cylinder part, and defines a gap with respect to the upper enlarged inner peripheral wall of the cylinder part. A piston to
The drug itself or the powder impregnated with the drug, and the powdered drug stored on the piston,
A powdered drug injection device comprising:

(2) It is a powdery medicine injection device of the composition of the above (1),
The piston has a bottomed cylindrical piston main body, and a vapor tap hole drilled near the bottom of the peripheral wall of the piston main body,
The powder medicine injection device according to claim 1, wherein a seal portion that slides in an airtight manner with respect to the peripheral wall of the piston main body is provided at an upper end portion of the upper-side expanded inner peripheral wall.

(3) It is a powdery medicine injection device of the composition of the above (2),
A powder medicine injection device, wherein a cap provided with an injection nozzle is provided at an upper opening end of the piston body.

(4) It is a powdery medicine injection device of composition given in either of the above (1)-(3),
A powder medicine injection, wherein a locking mechanism is provided between the cylindrical guide member and the cylindrical breaking member to prevent the cylindrical breaking member from moving toward the sealing portion. apparatus.

According to the powdery drug injection device having the configuration of (1) above, when the cylindrical breaking member held by the cylindrical guide member receives the operating force and moves toward the sealing portion, the cylindrical breaking member The pressing part breaks the sealing part and drops the gas generating agent in the cylinder part into the liquid in the container body. The gas generating agent that has fallen into the liquid reacts with the liquid in the container main body to generate a reaction gas, whereby the inside of the container main body becomes high pressure. When the pressure in the container body exceeds a predetermined level, the piston in the cylinder part is pushed up. Then, when the piston reaches the upper-diameter inner peripheral wall, the high-pressure reaction gas in the container body is released at once from the gap between the upper-diameter inner peripheral wall and the piston, and is powdered by the high-pressure gas wind pressure in the container main body. The medicine is sprayed and diffused from the top of the piston to the outside.
That is, the reaction gas for injecting and diffusing the powdered drug is confined in the container body until the pressure in the container body exceeds a predetermined value and the piston reaches the upper diameter expansion inner peripheral wall, and the piston expands to the upper diameter expansion inner peripheral wall. When it reaches, it will be injected at a stretch from the space | gap with an upper diameter expansion inner peripheral wall at a stretch by the cylinder part outside. Therefore, a high-pressure reaction gas can be obtained without using an explosive reaction with heat.
Therefore, it is not necessary to smoke the smoke agent by burning the drug as in the prior art or to heat and evaporate the powdered drug using a hydrothermal exothermic agent that indirectly heats the foaming agent. As a result, heat is not applied to the powdered drug, and a drug weak against heat can be used. Moreover, it is not necessary to dissolve a chemical | medical agent in a solvent or liquefied gas like an aerosol type or a pump type, and a chemical | medical agent with low solubility or a chemical | medical agent unstable in a solution state can also be used.

  According to the powder medicine injection device having the configuration (2), the powder medicine can be stored in the piston body. The high-pressure gas released from the enlarged inner peripheral wall of the cylinder part and the air gap between the pistons flows into the piston body from the vapor tap hole, and rapidly blows out the powdered medicine in the piston body at a high speed. The spray spreads.

  According to the powdery medicine injection device having the configuration of (3) above, the high-pressure gas released from the gap between the piston and the upper-side expanded inner peripheral wall flows into the piston body from the vapor tap hole, and the cap is injected. Since the flow velocity is further increased by the nozzle, the powdered medicine in the piston body is more reliably injected and diffused outside.

  According to the powdery drug injection device having the above configuration (4), the cylindrical breaking member held by the cylindrical guide member moves carelessly toward the sealing portion and breaks the sealing portion. It is prevented.

According to the powdery medicine injection device of the present invention, powdery medicine can be jetted and diffused without using a medium such as decomposition gas or solvent. In addition, it is not necessary to dissolve the powdered drug in a solvent or liquefied gas, and it is not necessary to apply heat for diffusion. Therefore, a drug with low solubility, a drug that is unstable in a liquid state, or a drug that is easily decomposed by heat is used. Can be used.
Moreover, since the powdery medicine can be sealed in the cylinder simply by sealing the upper opening end with a cap, a rubber plug, a sealing film, etc., it is easy to handle. Furthermore, the powdered medicine in the cylinder part can be prevented from being decomposed by moisture or oxidation of the outside air, and can be stored stably.
Furthermore, since the powdery medicine injection device of the present invention does not require the use of a fixed power source or fire heat, it is safe without fear of a fire, etc., and since a large-scale device is not required, it can be easily carried and the power source It can be used even in places where there is no equipment.

  The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

(A) is the whole front view which shows the outline | summary of the powdery medicine injection device which concerns on one Embodiment of this invention, (b) is AA sectional drawing of (a). It is a principal part enlarged view of the powdery chemical | medical agent injection apparatus shown to Fig.1 (a). It is a principal part enlarged view which shows the use condition of the powdery chemical | medical agent injection apparatus shown in FIG. (A)-(c) is explanatory drawing for demonstrating the procedure which carries out the jet diffusion of a powdery medicine using the powdery medicine injection device shown in FIG.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the powdery drug injection device 1 of the present embodiment has an upper end opening 13, a container main body 11 for containing water (liquid) 101 (see FIG. 4), and an upper end opening. 13 and a gas generating agent 43 accommodated in the cylindrical portion 26 of the cylindrical guide member 21 for generating a reaction gas by reacting with the water 101 in the container main body 11. And is held by the cylindrical guide member 21 so as to be movable toward the sealing portion 41 that seals the lower end opening of the cylindrical portion 26, and the sealing portion 41 is broken so that the gas generating agent 43 is contained in the container body 11. With respect to the cylindrical breaking member 31 provided with the pressing part 37 to be dropped into the water 101 at the lower end part and the lower sliding inner peripheral wall 53 of the cylinder part 51 provided at the upper end part of the cylindrical breaking member 31. While sliding in an air-tight manner, the cylinder portion 51 has an enlarged diameter inner wall 55 on the upper side. It includes a piston 63 that defines a gap S (see FIG. 3), and powdered drug 30 that is housed in the piston body 61 of the piston 63.

  The container body 11 of the present embodiment is a pressure-resistant container that has an upper end opening 13 and is integrally formed of a resin such as PET (polyethylene terephthalate). The container main body 11 can have various shapes as long as it has a top opening 13 and can be stably placed on the floor surface. The container body 11 is not limited to a resin container as long as it has a predetermined pressure resistance against an increase in internal pressure, and various containers such as a metal container, a ceramic container, and a glass container can be used.

The cylindrical guide member 21 of the present embodiment includes a lid portion 23 that closes the upper end opening portion 13, a cylindrical body portion 26 that is formed through the lid portion 23 so that both opening ends face the inside and the outside of the container body 11, and a container And a sealing portion 41 that seals the lower end opening of the cylindrical portion 26 extending inward of the main body 11.
The lid 23 is detachably attached to the upper end opening 13 by screwing a screw thread 25 to a screw thread 15 provided on the outer peripheral surface of the upper end opening 13 of the container body 11.
The sealing part 41 that seals the lower end opening of the cylindrical part 26 extending inward of the container main body 11 is configured such that, for example, the outer peripheral part of the circular sheet is formed into the lower end opening of the cylindrical part 26 by heat sealing or an adhesive. It is fixed. The sealing portion 41 has a sufficient fixing force capable of supporting the weight of the gas generating agent 43 accommodated in the cylindrical body portion 26, but the sealing portion 41 is pressed by a pressing portion 37 of the cylindrical breaking member 31 beyond a predetermined level. When pressure is applied, the fixing portion at the outer peripheral portion is broken and peeled off.

The cylindrical breaking member 31 of the present embodiment includes a main body portion 33 formed in a cylindrical shape having a smaller diameter than the cylindrical body portion 26 of the cylindrical guide member 21, and a cylinder portion 51 provided at the upper end portion of the main body portion 33. And is held by the cylindrical guide member 21 so as to be movable toward the sealing portion 41. The cylindrical breaking member 31 is disposed inside the cylindrical portion 26 so that the main body portion 33 is inserted from the upper opening of the cylindrical portion 26 and both opening ends can communicate with the inside and the outside of the container main body 11. .
A pressing portion 37 that breaks the sealing portion 41 and drops the gas generating agent 43 into the water 101 in the container main body 11 is provided at the lower end portion of the main body portion 33. The small-diameter portion 51 a of the cylinder portion 51 that constitutes the lower sliding inner peripheral wall 53 is fitted into the inner peripheral surface of the cylindrical portion 26 so that the pressing portion 37 of the main body portion 33 can move toward the sealing portion 41. It is hold | maintained at the cylinder part 26 (refer FIG. 2). The large-diameter portion 51b of the cylinder portion 51 defines the chamber 100 with the piston main body 61 described later.

As shown in FIGS. 1 and 2, between the cylindrical guide member 21 and the cylindrical fracture member 31, the cylindrical fracture member 31 held by the cylindrical guide member 21 moves toward the sealing portion 41. A lock mechanism 45 is provided to prevent this.
The locking mechanism 45 includes a gripping portion 93 having a C-shaped cross section of the stopper member 91 attached to the small diameter portion 51 a of the cylinder portion 51, an upper end portion 26 a of the cylindrical body portion 26 contacting the lower end edge of the gripping portion 93, And a stepped portion 57 of the cylinder portion 51 in contact with the upper end edge of the portion 93. That is, as shown in FIG. 1, the cylindrical breaking member 31 includes a holding portion 93 of the stopper member 91 interposed between the upper end portion 26 a facing the stepped portion 57, so that the sealing portion is pressed by a pushing operation. It is held in a state where it is prevented from moving toward 41. The stopper member 91 is provided with a knob portion 92 that is an operation portion when the grip portion 93 is removed.

And when moving the press part 37 of the cylindrical fracture | rupture member 31 toward the sealing part 41, as shown to Fig.4 (a), the stopper member 91 is removed from the cylinder part 51, and the step part 57 and an upper end are shown. The cylindrical breaking member 31 can be moved toward the sealing portion 41 by releasing the interposed state of the grip portion 93 with respect to the portion 26a. As shown in FIG. 4 (b), the tubular fracture member 31 whose pressing portion 37 has reached the fracture position of the sealing portion 41 is pushed in with the stepped portion 57 coming into contact with the upper end portion 26 a of the cylindrical body portion 26. By restricting the position, the lower end of the main body 33 is prevented from being immersed in the water 101 in the container main body 11.
That is, the lock mechanism 45 of the present embodiment is sealed by the cylindrical breaking member 31 that is held movably by the cylindrical guide member 21 when the powdered drug injection device 1 is stored. The movement toward the portion 41 is prevented.

As shown in FIG. 2, the cylinder portion 51 is a stepped pipe portion having different inner diameters, and a seal member (seal portion) 96 that slides in an airtight manner with respect to a peripheral wall of a piston main body 61 to be described later is provided at the upper end portion. The lower end portion has an engaging projection 58 that engages with the locking portion 27 of the cylindrical body portion 26 to prevent the cylindrical breaking member 31 from coming off.
Further, the cylinder portion 51 communicates the inside and the outside of the container main body 11 via the main body portion 33, and a lower sliding inner peripheral wall 53 on which the piston main body 61 of the accommodated piston 63 slides in an airtight manner, An upper-side enlarged inner peripheral wall 55 that defines a gap S between the piston main body 61 and the piston main body 61.

As shown in FIG. 2, the piston 63 has a bottomed cylindrical piston main body 61 having a circular bottom portion 62, and a vapor tap hole 64 drilled in the vicinity of the bottom portion 62 in the peripheral wall of the piston main body 61.
The peripheral wall of the piston body 61 is air-tightly slid on the small-diameter portion 61 a that slides airtight on the lower sliding inner peripheral wall 53 of the cylinder portion 51 and the lip portion of the seal member 96 provided on the upper end portion of the cylinder portion 51. And a large diameter portion 61b. Further, the large diameter portion 61 b of the piston main body 61 defines a chamber 100 between the large diameter portion 51 b of the cylinder portion 51.
A cup-shaped skirt portion 65 extending in the direction in which the tip expands is provided on the outer peripheral portion of the lower surface of the bottom portion 62 of the piston main body 61. The skirt portion 65 is elastically deformed in a direction in which the tip portion is in close contact with the lower sliding inner peripheral wall 53 when high-pressure gas acts from below to ensure airtightness.

  A powdery medicine 30 is accommodated in the piston main body 61. A cap 71 having an injection nozzle 75 is attached to the upper opening end of the piston body 61. Further, the injection nozzle 75 is sealed with a seal member 81. The sealing member 81 is a sealing member that seals the injection nozzle 75, and is formed of a resin sheet that is attached to the injection nozzle 75 and peeled off during use. In addition, as a sealing member which seals the injection nozzle 75, the sealing film which can be fractured | ruptured by a gas pressure can also be used. As the sealing film, for example, a parafilm (trade name: Parafilm M, model number: PM996, manufactured by Pechinery Plastic Packaging) can be used.

  That is, the inside of the piston body 61 can be sealed simply by fitting the injection nozzle 73 of the cap 71 to the upper opening end of the piston body 61 located outside the container body 11.

  The powdery medicine 30 is, for example, calcium silicate which is an inorganic powder (trade name, Florite RN, manufactured by Tokuyama Co., Ltd.), ciphenothrin (pyrethroid insecticide) as a medicine, dinotefuran which is a non-volatile insecticide, etc. Is impregnated. The drug impregnated in the powder is not limited to an insecticide containing an insecticidal component as an active ingredient, and various chemicals such as a fragrance, a deodorant, and a disinfectant can be used. Further, as the powder impregnated with the chemical, various powders such as inorganic powders such as calcium silicate and anhydrous silicic acid, and organic powders such as cellulose beads and powdered starch can be used. Moreover, the chemical | drug | medicine which is powder itself can be used as a powdery chemical | medical agent, or can be mixed and used for powder.

  In this embodiment, the liquid accommodated in the container main body 11 is water 101, and the gas generating agent 43 accommodated in the cylindrical portion 26 of the cylindrical guide member 21 is baking soda and citric acid. Therefore, when the gas generating agent 43 is introduced into the water 101 in the container main body 11, it reacts in the water 101 to generate carbon dioxide (reactive gas) G. Needless to say, the liquid and gas generating agent are not limited to water 101, sodium bicarbonate, and citric acid, and various liquids and gas generating agents can be used. However, the reaction gas generated by the gas generating agent is preferably non-flammable and harmless to the human body, such as carbon dioxide, and does not generate high heat during the reaction.

  Next, a procedure for injecting and diffusing an insecticide using the powdery drug injection device 1 of the above embodiment will be described with reference to FIGS. The powdery medicine injection device 1 is placed and used at the center of the room floor in order to spray insecticides and control insects such as cockroaches and house dust mites present in the room.

A predetermined amount of water 101 is filled in the container main body 11 of the powder medicine injection device 1 in advance. Since the container body 11 is filled with water 101 in advance, the powdery drug injection device 1 can be used as it is at the carrying destination. The water 101 can also be injected into the container body 11 later from the upper end opening 13 of the container body 11 opened by removing the lid 23 of the cylindrical guide member 21 of the powder medicine injection device 1. . The amount of water 101 to be injected may be poured up to a scale provided on the container body 11 formed of a transparent or translucent resin, or pre-measured water 101 may be poured.
In addition, a predetermined amount of a water-absorbing polymer or an aqueous gel in which water is retained may be stored in the container body 11 in advance.

  Next, after pouring water 101 into the container main body 11, the lid 23 is screwed into the upper end opening 13 to seal the inside of the container main body 11. At this time, the cylindrical guide member 21 has an upper opening 13 so that the lower end of the main body 33 is not immersed in the water 101 in the container main body 11 even when the pressing portion 37 breaks the sealing portion 41. It is attached to.

Next, as shown in FIG. 4A, the seal member 81 that seals the injection nozzle 75 is peeled off so that the upper opening end of the piston body 61 faces the outside. Further, the stopper member 91 is removed from the cylinder portion 51.
Then, the tubular breaking member 31 is pushed downward through the piston 63 to which the cap 71 is attached.

As shown in FIG. 4 (b), the cylindrical breaking member 31 that has moved toward the sealing portion 41 by receiving the pressing operation force is such that the pressing portion 37 peels off the fixing portion at the outer peripheral portion of the sealing portion 41. Break.
Therefore, the gas generating agent 43 surely falls into the water 101 in the container body 11 together with the peeled sealing portion 41.
Then, the gas generating agent 43 composed of sodium bicarbonate and citric acid reacts in the water 101 to generate carbon dioxide (reactive gas) G. The carbon dioxide gas G generated in the container body 11 gradually increases, and the inside of the container body 11 becomes a high pressure.

When the pressure of the carbon dioxide gas G in the container body 11 exceeds a predetermined pressure, the piston 63 in the cylinder part 51 is pushed up. At this time, the bottom 62 of the piston body 61 is provided with a skirt portion 65 to ensure airtightness with the lower sliding inner peripheral wall 53, so that the pressure of the carbon dioxide gas G leaks to the piston 63. It works effectively.
The fitting tolerance and material of the small diameter part 51a of the cylinder part 51 and the small diameter part 61a of the piston 63, the inner diameter of the lower sliding inner peripheral wall 53 of the cylinder part 51, and the outer diameter of the small diameter part 61a of the piston 63 are changed. Thus, the pressure in the container body 11 when the piston 63 starts to move can be controlled by appropriately changing the sliding resistance of the piston 63 with respect to the lower sliding inner peripheral wall 53.

As shown in FIG. 3, when the skirt portion 65 of the piston 63 reaches the upper-diameter enlarged inner peripheral wall 55 by the pressure in the container main body 11 of the carbon dioxide gas G exceeding a predetermined value, the high pressure in the container main body 11 is increased. Carbon dioxide gas G was released from the gap S between the upper diameter-expanded inner peripheral wall 55 and the piston body 61 at a stretch, and was defined between the large-diameter portion 51b of the cylinder portion 51 and the small-diameter portion 61a of the piston 63. It flows into the chamber 100.
The high-pressure carbon dioxide gas G that has flowed into the chamber 100 flows into the piston body 61 from the vapor tap hole 64 as shown in FIG. 4C, and the cylinder 30 while winding up the powdery medicine 30 in the piston body 61 at a high speed. It diffuses at a stretch outside the unit 51.

Since the cap 71 having the injection nozzle 75 is provided at the upper opening end of the piston main body 61, the high-pressure gas rising while winding up the powdered medicine 30 in the piston main body 61 is increased in flow rate by the injection nozzle 75. The powdered medicine 30 in the piston body 61 is more reliably injected and diffused outside.
The large-diameter portion 61b of the piston main body 61 slides in an airtight manner on the lip portion of the seal member 96 provided at the upper end portion of the cylinder portion 51, so that the high-pressure carbon dioxide gas G flowing into the chamber 100 leaks. It can flow into the piston main body 61 from the vapor tap hole 64 without.

  That is, the carbon dioxide gas G for injecting and diffusing the powdery medicine 30 is confined in the container body 11 until the gas pressure becomes equal to or higher than a predetermined value and the skirt portion 65 of the piston 63 reaches the upper-diameter inner peripheral wall 55. When the skirt portion 65 reaches the upper-side expanded inner peripheral wall 55, it is released from the gap S with the upper-side expanded inner peripheral wall 55 into the chamber 100 and flows into the piston body 61 from the vapor tap hole 64. Then, it is injected at a stretch from above the piston body 61 (the injection nozzle 75 of the cap 71). Therefore, the powder medicine injection device 1 can obtain the high-pressure carbon dioxide gas G without using an explosive reaction with heat.

Therefore, the powdery drug injection device 1 according to the present embodiment is a foaming device that generates smoke by the heat of the heating element or generates a medium other than the drug, such as a conventional smoke type or heat transpiration type. It is not necessary to heat and heat the pesticide as a medicine. As a result, heat is not applied to the insecticidal component as a drug impregnated in the calcium silicate of the powdery drug 30, and an insecticidal component that is weak against heat can also be used. Moreover, it is not necessary to dissolve an insecticidal component in a solvent or a liquefied gas as in the conventional aerosol type or pump type, and an unstable insecticidal component can be used in an insecticidal component having low solubility or a solution. In addition, by using a low-reactivity gas such as carbon dioxide as a powder drug medium, there is no degradation of the powder drug, adverse effects on indoor furniture, and no indoor pollution.
According to the powdery medicine injection device 1 of this embodiment described above, an insecticide as a medicine can be injected and diffused without using a medium such as a gas or a solvent.

In addition, the container main body, the lid part, the cylindrical part, the sealing part, the cylindrical guide member, the cylindrical breaking member, the pressing part, the cylinder part, the piston, the locking mechanism, the injection nozzle, and the like according to the powdery drug injection device of the present invention, The constituent members such as the powder, the active ingredient of the drug, the powdery drug, the liquid, and the gas generating agent are not limited to the configurations of the above-described embodiments, and can take various forms based on the gist of the present invention.
In the powdery drug injection device 1 of the above embodiment, the pressing portion 37 is configured to be broken so as to press and urge the sealing portion 41 to peel off the fixing portion on the outer peripheral portion. Of course, various shapes can be adopted as long as the sealing portion 41 can be broken and the gas generating agent 43 can be dropped.

DESCRIPTION OF SYMBOLS 1 Powdery medicine injection apparatus 11 Container main body 13 Upper end opening part 21 Cylindrical guide member 23 Lid part 26 Cylindrical part 27 Locking part 30 Powdery chemical | medical agent 31 Cylindrical breaking member 33 Main body part 37 Press part 41 Sealing part 43 Gas Generating agent 45 Lock mechanism 51 Cylinder portion 53 Lower sliding inner peripheral wall 55 Upper sliding inner peripheral wall 61 Piston main body 62 Bottom 63 Piston 64 Vapor tap hole 65 Skirt portion 71 Cap 75 Injection nozzle 91 Stopper member 96 Seal member 100 Chamber 101 Water (liquid)

Claims (4)

A container body for containing liquid, having an upper end opening;
A lid portion that closes the upper end opening, a cylindrical body portion that is formed through the lid portion so that both open ends face the inside and outside of the container body, and the cylindrical body portion that extends toward the inside of the container body. A cylindrical guide member that has a sealing portion that seals the lower end opening thereof and is attached to the upper end opening portion,
A gas generating agent accommodated in the cylindrical portion to generate a reaction gas by reacting with the liquid in the container body;
A pressing portion that is held by the cylindrical guide member so as to be movable toward the sealing portion and that breaks the sealing portion and drops the gas generating agent into the liquid in the container body is provided at the lower end portion. A cylindrical breaking member,
The cylinder part provided at the upper end of the cylindrical breaking member slides in an airtight manner on the lower sliding inner peripheral wall of the cylinder part, and defines a gap with respect to the upper enlarged inner peripheral wall of the cylinder part. A piston to
The drug itself or the powder impregnated with the drug, and the powdered drug stored on the piston,
A powdered drug injection device comprising: The piston has a bottomed cylindrical piston main body, and a vapor tap hole drilled near the bottom of the peripheral wall of the piston main body,
2. The powdery drug injection device according to claim 1, wherein a seal portion that slides in an airtight manner with respect to the peripheral wall of the piston main body is provided at an upper end portion of the upper-side expanded inner peripheral wall.   The powder medicine injection device according to claim 2, wherein a cap having an injection nozzle is provided at an upper opening end of the piston body.   The lock mechanism which prevents that the said cylindrical fracture | rupture member moves toward the said sealing part is provided between the said cylindrical guide member and the said cylindrical fracture | rupture member. 4. The powdery drug injection device according to any one of 3 above.

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