Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M15/00—Inhalators
  • A61M15/0028—Inhalators using prepacked dosages, one for each application, e.g. capsules to be perforated or broken-up
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M15/00—Inhalators
  • A61M15/0001—Details of inhalators; Constructional features thereof
  • A61M15/0013—Details of inhalators; Constructional features thereof with inhalation check valves
  • A61M15/0015—Details of inhalators; Constructional features thereof with inhalation check valves located upstream of the dispenser, i.e. not traversed by the product
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M15/00—Inhalators
  • A61M15/0001—Details of inhalators; Constructional features thereof
  • A61M15/0021—Mouthpieces therefor
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2202/00—Special media to be introduced, removed or treated
  • A61M2202/06—Solids
  • A61M2202/064—Powder
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
  • A61M2206/00—Characteristics of a physical parameter; associated device therefor
  • A61M2206/10—Flow characteristics
  • A61M2206/14—Static flow deviators in tubes disturbing laminar flow in tubes, e.g. archimedes screws

Definitions

• the present invention relates to a medical device, and more particularly to a dry powder inhalation device, and more particularly to a dry powder aerosolized inhaler capable of aerosolizing a powder.
• the existing dry powder inhalers have various structural forms, but there are three main problems: First, the inhalation rate of the powder is low, and studies have shown that only 8 to 16% of the drug particles can enter the airway and the lungs; Dry powder is easy to be blown out. Some dry powder inhalers are in the vicinity of the mouth of the mouth. Once they exhale into the mouth of the mouth, especially the elderly and children often involuntarily exhale, the dry powder is easily blown off. Third, some nozzle mouth cleaning is difficult, and the pollutants on the mouth of the mouth can cause cross infection.
• the object of the present invention is to design an aerosol which can be aerosolized in an inhaler by inhaling a gas stream, which can significantly increase the drug inhalation rate, allowing more drug particles to reach the lower respiratory tract and even the alveoli; at the same time, prevent the drug from being A new dry powder aerosolized inhaler that is blown out by the user when exhaled to prevent cross-infection and reduce systemic side effects, and significantly reduce the financial burden on the user.
• a dry powder aerosolized inhaler comprises a main body 11 and a nozzle joint 12 connected thereto, wherein the main body 11 is provided with a charging hole 1 , the charging hole 1 is connected with the vortex channel, the vortex channel and the suction The mouthpiece 9 of the mouth joint 12 communicates.
• the present invention further takes the following technical measures:
• the charging hole 1 may be a funnel-shaped charging hole 1, and a charging hole cover 2 is mounted on the main body 11 above the funnel-shaped charging hole 1.
• the charging hole cover 2 is provided with a small hole.
• An air inlet 4 is provided in the main body 11, and the air inlet 4 communicates with the funnel-shaped charging hole 1 through the air inlet 5.
• a check valve 3 is mounted on the main body 11 at the position of the intake port 4.
• the number of vortex channels is greater than one vortex channel or in series, or juxtaposed.
• the eddy current channels or portions are connected in series or partially in parallel.
• the vortex channel is composed of a small inner diameter inlet 6 and a large inner diameter vortex chamber 7; a small inner diameter inlet 6 One end is in communication with the large-diameter scroll chamber 7, and the other end is in communication with the charging hole 1, and the large-diameter scroll chamber 7 is directly connected to the nozzle opening 9 or communicates with the small-diameter inlet port of the adjacent vortex channel. And so on, until the large-diameter vortex chamber in the last vortex channel communicates with the nozzle opening 9.
• the above-mentioned large-diameter scroll chamber ⁇ is connected to the small-diameter air inlet 6 or has a gradual structure or a mutated structure.
• the nozzle joint 12 is provided with an outer sleeve 10 for the user's mouth, and the outer sleeve 10 has various specifications for the beneficial effects of the present invention:
• the inhaled drug particles can be aerosolized before entering the respiratory tract, increase the inhalation rate, and reach the lower respiratory tract, and even the alveoli, providing a more effective direct administration route for preventing respiratory diseases.
• the outer sleeve of the nozzle is easy to clean and can prevent cross infection.
• the long outer sleeve of the nozzle is designed to be placed at the back of the middle of the mouth, placed on the tongue, and the mouth of the mouth is facing the pharynx to reduce the adhesion of the dry powder on the tongue and the oral mucosa. In this way, during the inhalation process, it not only helps to increase the inhalation rate of dry powder, but also avoids excessive absorption of drugs by the oral mucosa and tongue, and reduces the incidence of systemic side effects.
• FIG. 1 is a schematic structural view of Embodiment 1 of the present invention.
• Figure 2 is a schematic plan view of the structure of Figure 1.
• Fig. 3 is a schematic view showing the structure of a slot for inserting the charging hole cover 2 on the main body according to the first embodiment of the present invention.
• Fig. 4 is a view showing the structure of a valve piece 3 according to a first embodiment of the present invention.
• FIG. 5 is a schematic structural view of Embodiment 2 of the present invention.
• a dry powder aerosolized inhaler comprises a main body 11 and a nozzle joint 12 connected thereto, and a funnel-shaped charging hole 1 is arranged in the main body 11, and a funnel-shaped charging hole 1 is arranged above the main body 11 and mounted thereon.
• the medicine hole cover 2, the charging hole cover 2 is inserted into the slot on the main body 11, as shown in FIG. 3, FIG.
• FIG. 3 is a schematic diagram of the dry powder aerosolized inhaler cover 2 and the cover groove 201, charging
• the hole cover plate 2 can be provided with corresponding small holes, and the funnel-shaped charging holes 1 communicate with the inlet passage 5 on the main body 11 and the intake passage 6 of the vortex flow passage, respectively, and the intake passage 8 of the vortex flow passage
• One end is opposite to the nozzle opening 9 on the nozzle joint 12, and the inner diameter of the nozzle opening 9 is larger than the inner diameter of the inlet port 8, so that the nozzle opening 9 and the small-diameter inlet port 8 of the present embodiment are equivalently formed.
• a vortex tunnel that is, the manner in which the two vortex chambers are actually connected in series in this embodiment.
• FIG. 4 is a schematic diagram of the check valve 3 and the door ear 301 of the dry powder aerosolized inhaler.
• the vortex channel is composed of a small inner diameter inlet 6 and a large inner diameter vortex chamber 7, and the small inner diameter inlet 6 communicates with the funnel-shaped charging hole 1 and the large inner diameter vortex chamber 7, respectively.
• the small inner diameter inlet 8 in FIG. 1 corresponds to the small inner diameter inlet 6, which communicates with the large inner diameter vortex chamber in the adjacent vortex chamber, and so on.
• the nozzle opening 9 can adopt a gradation structure as shown in Fig. 1, and a mutant structure can also be used.
• the connection between the large inner diameter scroll chamber 7 and the small inner diameter inlet passage 6 and the small inner diameter inlet passage 8 may be a gradation structure as shown in Fig. 1, and a mutated structure may also be employed.
• An outer sleeve 10 is provided on the nozzle joint 12 for the user's mouth. The outer sleeve 10 is available in a variety of sizes.
• the nozzle joint 12 can be made separately from the main body 11 and then assembled into a complete appliance; the main body is divided into two halves in a longitudinal section, and then joined together.
• the nozzle portion can be made in sections, assembled in a spiral, and the like.
• a funnel-shaped charging hole 1 for containing dry powder is prepared on the main body 11 of the dry powder aerosol inhaler, and the inner diameter of the upper opening can be about 10 mm, and the inner diameter of the lower opening can be about 3 mm.
• the lower end of the funnel-shaped charging hole 1 is connected to the pipe structure after the charging hole, and the inner diameter of the pipe can be gradually enlarged or partially enlarged from the connection of the funnel-shaped charging hole 1.
• the side wall of the funnel-shaped charging hole 1 can be connected to the front pipe of the charging hole (inlet 5); the air inlet 5 can be composed of several small gaps of 1 mm wide to filter foreign matter in the air, funnel charging
• the push-pull type charging hole cover plate can be used, and the charging hole cover plate can be installed in the charging hole cover groove, as shown in FIG.
• the pipe between the lower end of the funnel-shaped charging hole 1 and the mouth of the nozzle serves as a dry powder aerosolizing chamber (ie, a vortex channel), and the pipe has a small inner diameter inlet 6 and A large inner diameter pipe (i.e., the swirl chamber 7) is connected to form a structural unit.
• a vortex is formed, and the dry powder is sufficiently dispersed in the vortex as the airflow passes, forming an aerosol.
• the powder can be repeatedly dispersed to achieve more aerosolization;
• the inner diameter of the small inner diameter inlet 6 can be about 3 mm.
• this section of pipe length can be 8 About a millimeter.
• the inner diameter of the large inner diameter pipe ie, the swirl chamber 7
• the male inner diameter of the large inner diameter pipe ie, the swirl chamber 7
• the effect of the spinning is best; then the inner diameter of the large-diameter scroll chamber 7 should be gradually reduced, or it can be kept small to prevent the retention of dry powder.
• the length of the pipe can be about 25 mm.
• the side wall of the funnel-shaped charging hole 1 can communicate with the air inlet 4 through the air inlet 5, and the check valve 3 is provided at the air inlet 4.
• the valve plate 3 When inhaling from the mouthpiece 9, the valve plate 3 is opened inward and air is introduced; if it is inadvertently exhaled into the mouthpiece 9, the valve plate 3 will be closed to prevent the dry powder from being blown out.
• the one-way valve 3 is made up of a valve ear hole that is mounted on the main body 11 by the valve ear 301, see Fig. 4. A valve block can be placed in the air inlet 4 to prevent the valve plate from being over opened.
• outer sleeve 10 on the nozzle joint 12, which is easy to remove and then cleaned and disinfected.
• the outer sleeve 10 can be about 80 mm in length, and the outer sleeve 10 is provided by the user's mouth portion, and can be of different sizes to suit the size of the mouth.
• the inner side of the outer sleeve 10 can be slightly raised in a circle, and a slight protrusion is formed on the outer side of the corresponding portion on the main body 11, and the outer sleeve 10 can be fixed when being fastened to each other.
• the use process of the present invention is:
• the aerosolized dry powder can reach the lower respiratory tract extensively and deeply, and even in the alveoli, it can fully exhibit the advantages of less dosage, quick onset, and less systemic side effects.
• the dry powder aerosolized inhaler of the present embodiment comprises a main body 11 and a nozzle joint 12 connected thereto, and a funnel-shaped charging hole 1 is arranged in the main body 11, and the upper part of the funnel-shaped charging hole 1 is mounted on the main body 11.
• the air inlet 5 and the small inner diameter inlet passage on the 11 are opposite to each other, and the small inner diameter air inlet 13 is respectively a large inner diameter scroll chamber 7 and a large inner diameter scroll chamber 17, and one end and a large inner diameter of the small inner diameter inlet passage 8
• the nozzle opening 9 of the scroll chamber 27 communicates with each other.
• three vortex chambers are actually connected in series, and the three vortex chambers respectively have a large inner diameter scroll chamber 7 and a large inner diameter scroll chamber. 17.
• the large inner diameter scroll chamber 27 is representative.
• a check valve 3 is installed at the air inlet 4, and a valve blocking column 16 is disposed in the air inlet 4 to prevent the valve plate from being excessively opened.
• the outer sleeve 10 is provided on the nozzle joint 12 for the user's mouth.
• the inner side of the outer sleeve 10 can be made to have a slight protrusion, and the outer side of the corresponding portion of the main body 11 has a slight protrusion, and when they are fastened to each other, It functions to fix the outer sleeve 10.
• the valve piece 3 at the inlet port 4 is automatically opened, the air flows in, and is filled into the funnel-shaped charging hole 1 through the inlet port 5, so that the funnel-shaped charging hole 1
• the powder inside enters the small inner diameter inlet 6 with the inspiratory flow.
• the mouth 9 - inside the mouth the air flows from the funnel-shaped filling hole 1 into the user's mouth.
• the internal volume of the vortex channel is only about 1.8 cubic centimeters, the eddy current has been generated four times, which can drive the powder to be uniformly suspended in the airflow, forming a powder gas. Sol. Therefore, the powder aerosol can be widely absorbed into the lower respiratory tract and the alveoli with inhalation.

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• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Pulmonology (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Hematology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Medicinal Preparation (AREA)

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Citations (6)

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• 2005
  • 2005-04-04 CN CNB2005100386811A patent/CN100431634C/zh not_active Expired - Fee Related
• 2006
  • 2006-03-13 AT AT06722039T patent/ATE539785T1/de active
  • 2006-03-13 WO PCT/CN2006/000381 patent/WO2006105709A1/zh not_active Ceased
  • 2006-03-13 JP JP2008503352A patent/JP5086988B2/ja not_active Expired - Fee Related
  • 2006-03-13 EP EP06722039A patent/EP1872817B1/en not_active Revoked
  • 2006-03-13 US US11/887,755 patent/US8978645B2/en not_active Expired - Fee Related

Patent Citations (6)

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