CN1899636A - inhaled drug release device - Google Patents

Abstract

An inhalation type drug delivery device is used for being connected with a drug reservoir capable of releasing atomized drugs so as to enable a user to inhale the atomized drugs; comprises the following steps: a housing having an input port and an output port, and a chamber therebetween; a cover at least partially made of breathable material and connected to the input port of the housing, the cover being in communication with the chamber to provide a temporary chamber for releasing the drug; and the first one-way valve is arranged in the cavity of the shell and can be opened under the action of negative pressure. The invention utilizes the air permeability of the cover body, can avoid the negative pressure phenomenon generated in the chamber and the temporary storage chamber, and provides the effect of easy medicine suction for users.

Description

inhaled drug release device

【Technical field】

The present invention relates to an inhalation type drug release device, in particular to an inhalation type drug release device which can be easily inhaled by patients.

【Background technique】

Respiratory diseases, such as asthma, are easily triggered by external environmental stimuli, causing patients to have difficulty breathing. Treatment drugs are often prescribed as "inhaled drugs" to deliver the required drugs (such as bronchodilators or anti-inflammatory agents) directly to the lungs to exert therapeutic effects.

At present, there are about three ways to use portable inhalation drugs, the first is the quantitative spray that is directly inhaled after the mouth is tightened, the second is that the content of the inhalation is very fine powder, and the third is the inhalation. One is the inhalation drug that can be connected to the "inhalation aid". Most of these inhalation drugs are inhaled by spraying. The use of the inhalation aid can reduce the amount of drug deposited in the throat and make the drug reach the lungs. More adequately, the present invention provides improvements to the "inhalation aid" in the third usage mode.

As shown in FIG. 1 , it is a conventional inhalation aid 1 , which includes a cylinder body 11 with an accommodating space 111 inside, and a high-pressure bottle 12 mounted on the cylinder body 11 and filled with medicine. An inlet 112 is formed at one end of the cylinder body 11, and an outlet 113 is formed at the opposite end. The cylinder body 11 at the end of the outlet 113 is provided with a mouthpiece 114 that can be held by the user, and the outlet 113 is provided with a mouthpiece that can A non-return valve 115 that is one-way opened toward the mouthpiece 114. The high-pressure bottle 12 is installed at the entrance 112 of the cylinder 11 . The high-pressure bottle 12 is also provided with a switch 121 that can be pressed by the patient and a catheter 122 that can introduce medicine into the barrel 11 . In this way, as long as the patient holds the mouthpiece 114 and presses the switch 121 on the high-pressure bottle 12 at an appropriate time, the drug can be sprayed into the accommodating space 111 at a high speed and an atomization effect will be generated at the same time. Opening to valve 115 allows aerosolized medicament to pass through outlet 113 and inhaled by the patient. However, because the accommodating space 111 of the cylinder body 11 is in an airtight state, the negative pressure in the accommodating space 111 will increase with the number of inhalations of the user, so that the user inhales more and more effortlessly.

【Content of invention】

The object of the present invention is to provide an inhalation drug release device which can be easily inhaled by patients.

In order to achieve the above object, the present invention provides an inhalation type drug release device, which is used to connect a drug reservoir capable of releasing atomized drug for the user to inhale the atomized drug; it is characterized in that it comprises:

A housing with an input port and an output port, and a chamber therebetween;

a cover at least partially made of a gas-permeable material connected to the input port of the housing, the cover communicating with the chamber to provide a release drug buffer; and

A first one-way valve is arranged in the chamber of the housing and can be opened under negative pressure.

The inhalation drug release device is characterized in that: the cover body has a hollow connecting part for connecting to the input port of the casing, and a venting part provided at the other end of the connecting part, The temporary storage room is jointly defined by the connection part and the ventilation part.

The inhalation-type drug release device is characterized in that it also includes an air filter communicated with the interior of the housing, and a second unit for controlling the connection between the air filter and the housing. One-way valve, the second one-way valve can be opened due to positive pressure, so that the airflow is input into the air filter element and then filtered out to the outside world.

The inhalation drug release device is characterized in that it also includes a mouthpiece installed at the output port of the housing.

The inhalation drug release device is characterized in that it also includes a mask installed at the output port of the casing for covering the mouth and nose of the user.

The inhalation drug release device is characterized in that: the air-permeable part is made of non-woven material.

In summary, the inhalation-type drug release device of the present invention is used for inserting a drug storage device containing drugs, and the drug in the drug storage device is atomized and output; the inhalation-type drug release device includes a The casing in which the medicine storage device is inserted, a cover body which is arranged at one end of the casing and partially made of breathable material, and a first one-way valve which is arranged in the casing and can be opened under the action of negative pressure; when the medicine storage device will After the drug is injected into the shell and produces an atomization effect toward the cover body, the user only needs to inhale against the output port of the shell, and the first one-way valve will be opened along the flow direction of the air flow due to the negative pressure, so that the atomization effect can be achieved. The final drug can be output from the output port through the first one-way valve for the user to inhale. In addition, the air permeability of the cover body can balance the pressure inside and outside the shell when the user inhales the drug, so as to avoid the chamber and temporary storage. Negative pressure is generated in the room, which provides the user with the effect of taking medicine easily. In addition, with the above-mentioned air filter, the exhaled air of the user can be filtered before being discharged to the outside to avoid the spread of bacteria.

【Description of drawings】

The inhalation drug release device of the present invention will be described in detail below in conjunction with the accompanying drawings and examples:

Figure 1 is a schematic diagram of a conventional inhalation aid;

Figure 2 is a schematic partial cross-sectional view of a preferred embodiment of the inhalation drug release device of the present invention;

Fig. 3 is the operation diagram 1 of the preferred embodiment, showing the flow state of the nebulized medicine when the user inhales, the first one-way valve is opened and the second one-way valve is closed;

Fig. 4 is the second operation diagram of the preferred embodiment, showing the flow state of the user's exhaled airflow when the user exhales, the first one-way valve is closed and the second one-way valve is opened;

Fig. 5 is a schematic diagram of the preferred embodiment 1 usage state, showing the state of using high-pressure oxygen to spray the liquid medicine in the medicine storage container into the casing at high speed to produce an atomization effect;

Fig. 6 is a schematic diagram of another usage state of the preferred embodiment, showing the flow state of the nebulized medicine when the user inhales, the first one-way valve is opened and the second one-way valve is closed; and

Fig. 7 is a schematic view of another usage state of the preferred embodiment, showing the flow state of the airflow exhaled by the user when the first one-way valve is closed and the second one-way valve is opened when the user exhales.

【Detailed ways】

As shown in Figure 2, it is the first preferred embodiment of the inhalation-type drug release device 2 of the present invention, which is used for inserting a drug storage device 3 containing drugs, and the drug storage device 3 is a drug storage device filled with A high-pressure container of powdered medicine, and the medicine storage device 3 has a medicine outlet (not shown in the figure), a medicine output control valve 31 located at the medicine outlet, and a medicine output control valve 31 that communicates with the control valve 31 to enable The nozzle 32 where the medicine is sprayed out at high speed. The inhalation drug release device 2 includes a housing 21 , a cover 22 disposed at one end of the housing 21 , and a first one-way valve 23 disposed in the housing 21 . The casing 21 has an input port 211 and an output port 212, and a chamber 213 formed therebetween. The chamber 213 is divided into a front section and a rear section. The front section is defined herein as being close to the output port 212 of the casing 21, while the rear section is close to the input port 211 of the casing 21, and the first unidirectional The valve 23 controls the on-off of the front and rear sections. The drug released when the first one-way valve 23 is opened can flow from the rear section of the chamber 213 to the front section. The cover body 22 has a connecting portion 221 in the shape of a hollow cylinder, and a ventilating portion 222 arranged at one end of the connecting portion 221 and made of a breathable non-woven material. The connecting portion 221 and the venting portion 222 jointly define a temporary storage room. 223. An opening 224 is formed at the other end of the connecting portion 221 , through which the input port 211 of the casing 21 can communicate with the temporary storage chamber 223 . When the first one-way valve 23 is in the closed state, the temporary storage chamber 223 is only in communication with the rear section of the chamber 213 .

In addition, the inhalation drug release device 2 further includes a mouthpiece 24 installed at the output port 212 of the casing 21 and can be taken by the user, and a mouthpiece 24 that communicates with the front section of the chamber 213 of the casing 21 and can be used for A filter (Bacterial filter) 25 for bacteria in the filtered gas, and a second one-way valve 26. The mouthpiece 24 has a channel 241 communicating with the chamber 213 and the outside world. The air filter 25 has an input end 251 fixed on the housing 21 and communicated with the chamber 213, an output end 252 opposite to the input end 251, and a filter between the input end 251 and the output end 252. Layer 253. The aforementioned second one-way valve 26 can control the connection between the filter element 25 and the chamber 213 .

As shown in Figures 2 and 3, in use, the user needs to hold the mouthpiece 24 and activate the control valve 31 to open. At this time, the medicine in the medicine storage 3 is sprayed into the cavity of the housing 21 through the nozzle 32 at high speed. In the chamber 213, the atomization effect can be produced by hitting the inner wall of the housing 21. The atomized medicine will diffuse from the rear section of the chamber 213 into the temporary storage chamber 223. When the user inhales, the front of the chamber 213 The section generates a negative pressure force to attract the first one-way valve 23 to open along the air flow direction, so that the atomized medicine can pass through the first one-way valve 23 from the temporary storage chamber 223 and the rear section of the chamber 213. The output port 212 is output to the user's mouth, because the breathable performance of the air-permeable part 222 of the cover body 22 allows air to enter and exit the cover body 22, thereby balancing the internal and external pressures and avoiding excessive pressure in the chamber 213 and the temporary storage chamber 223. Negative pressure, so the user can inhale the medicine more easily and effortlessly.

In addition, as shown in Figure 4, when the user exhales, the first one-way valve 23 is pushed by the positive pressure of the exhaled airflow to form a closed state, while the second one-way valve 26 is instead pressed by the exhaled airflow. Positive pressure pushes and opens away from the housing 21 , so that the exhaled airflow can be input into the air filter 26 from the input end 251 , and then be discharged from the output end 252 after being filtered by the filter layer 253 . In this way, for some users suffering from infectious respiratory diseases, it can more effectively filter bacteria and prevent the spread of bacteria.

As shown in Figure 5, the inhalation drug delivery device 2 of the present invention is not only convenient for the user to carry as mentioned above, but also can replace the aforementioned mouthpiece 24 with a face mask 27 depending on the situation when used in a medical institution. Medicine device 3 can be provided with an output joint 33 more, can hold liquid medicine in the medicine storage device 3 now; The pipeline is connected with the output joint 33 of the drug storage device 3, and the mask 27 is placed on the mouth and nose of the user, and the high-pressure oxygen is used to input the drug storage device 3 at a high speed, and it is placed at the nozzle 32 under the action of the Bernoulli principle. Negative pressure is generated to inhale the liquid medicine into the high-speed gas, and then spray it into the rear section of the chamber 213 of the housing 21 at a high speed. The atomization effect can also be generated by hitting the inner wall of the housing 21, and then diffuse into the temporary storage chamber 223 In this way, when the user inhales, the first one-way valve 23 is opened due to negative pressure, and the nebulized medicine can also pass through the first one-way valve 23 and output from the output port 212 for the user to effortlessly Inhalation (as shown in Figure 6). As shown in Figure 7, when the user exhales, the first one-way valve 23 forms a closed state, while the second one-way valve 26 is pushed away from the housing 21 by the positive pressure of the exhaled airflow instead. The direction 21 is open, so the exhaled airflow can pass through the second one-way valve 26 and be filtered by the air filter 25 and then be discharged to the outside from the output port 252 . In this way, for some users suffering from infectious respiratory diseases, it can more effectively filter bacteria and prevent the spread of bacteria.

As mentioned above, the inhalation-type drug release device 1 of the present invention is provided with a breathable cover 22 at one end of the casing 21 to balance the pressure inside and outside the casing 21 when the user inhales the drug, and avoid the generation of pressure in the casing 21. The negative pressure allows the user to inhale the medicine effortlessly. In addition, with the arrangement of the air filter 26, the gas exhaled by the user can be filtered before being discharged to the outside to avoid the spread of bacteria.

Claims (6)

1. An inhalation-type drug release device, used to connect a drug storage device capable of releasing atomized drugs for the user to inhale the atomized drugs; it is characterized in that it comprises: A housing with an input port and an output port, and a chamber therebetween; a cover at least partially made of a gas-permeable material connected to the input port of the housing, the cover communicating with the chamber to provide a release drug buffer; and A first one-way valve is arranged in the chamber of the housing and can be opened under negative pressure. 2. The inhalation drug release device according to claim 1, wherein the cover body has a hollow connecting portion for connecting to the input port of the housing, and a hollow connection portion disposed on the connecting portion. As for the vent part at the other end, the temporary storage chamber is jointly defined by the connection part and the vent part. 3. The inhalation drug release device according to claim 1, further comprising an air filter communicated with the interior of the housing, and an air filter for controlling the distance between the air filter and the housing. The on-off second one-way valve, the second one-way valve can be opened due to positive pressure. 4. The inhalation drug delivery device as claimed in claim 1, further comprising a mouthpiece disposed at the outlet of the casing. 5. The inhalation drug delivery device as claimed in claim 1, further comprising a mask installed at the outlet of the housing. 6. The inhalation drug release device as claimed in claim 2, wherein the air-permeable part is made of non-woven material.

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