CN110882453A - Inhaler mouthpiece and inhaler - Google Patents
Inhaler mouthpiece and inhaler Download PDFInfo
- Publication number
- CN110882453A CN110882453A CN201811051651.8A CN201811051651A CN110882453A CN 110882453 A CN110882453 A CN 110882453A CN 201811051651 A CN201811051651 A CN 201811051651A CN 110882453 A CN110882453 A CN 110882453A
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- Prior art keywords
- mouthpiece
- inhaler
- face
- blowing nozzle
- degrees
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- 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
- A61M11/00—Sprayers or atomisers specially adapted for therapeutic purposes
-
- 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
Abstract
The invention discloses an inhaler, comprising: the shell comprises an upper shell and a lower shell connected with the upper shell, and the upper shell can rotate relative to the lower shell; the storage container is arranged in the shell and used for storing the liquid; the pressure assembly is arranged in the shell, and one end of the pressure assembly extends into the storage container; the nozzle is connected with the other end of the pressure component; and the blow gun, the blow gun is connected and the nozzle holding is in the blow gun with last casing, its characterized in that, the blow gun includes: a mouthpiece connecting section for connecting the mouthpiece to the upper housing; the inner blowing nozzle cylinder is arranged in the center of the connecting part of the blowing nozzle and is provided with openings at two ends; and the outer blowing nozzle barrel is arranged on the outer side of the inner blowing nozzle barrel and is positioned on the same side of the connecting part of the blowing nozzle with the inner blowing nozzle barrel, and the outer blowing nozzle barrel is provided with at least one air inlet.
Description
Technical Field
The present invention relates to an inhaler, and more particularly, to an inhaler mouthpiece and an inhaler using the inhaler mouthpiece.
Background
An aerosolizer, also known as a nebulizer or nebulizer, is used to assist a patient in administering a drug by inhalation. The liquid medical agent is atomized to help the user to obtain an effective inhalation efficiency and absorption effect. The size of the fine particles may be adjusted according to different respiratory conditions, such as chronic obstructive pulmonary disease or asthma, or according to the type of the liquid medicine itself. However, the medicament is not sufficiently absorbed because the flow resistance at the nozzle of the inhaler is difficult to control, resulting in the patient inhaling the aerosolized medicament too quickly.
Disclosure of Invention
To solve the above technical problem, an aspect of the present invention provides an inhaler mouthpiece, comprising:
a mouthpiece connecting section for connecting the mouthpiece to the inhaler body;
the inner blowing nozzle cylinder is arranged in the center of the connecting part of the blowing nozzle and is provided with openings at two ends; and
the outer blowing nozzle barrel is arranged on the outer side of the inner blowing nozzle barrel and located on the same side of the connecting portion of the blowing nozzle with the inner blowing nozzle barrel, and at least one air inlet is formed in the outer blowing nozzle barrel.
In one embodiment, the height of the mouthpiece inner barrel in the height direction of the inhaler is less than the height of the mouthpiece outer barrel.
In another embodiment, each of the at least one air inlets is located on a first face of the inner surface of the mouthpiece outer barrel with an area smaller than an area of a second face of the outer surface of the mouthpiece outer barrel.
Further, in a cross section of the outer barrel of the mouthpiece perpendicular to the axial direction of the outer barrel of the mouthpiece and passing through both ends of the at least one air inlet, an angle formed by a line connecting a center point of the cross section to both ends of the first face is between 35 degrees and 45 degrees, and an angle formed by a line connecting the center point of the cross section to both ends of the second face is between 55 degrees and 65 degrees.
Further, an included angle formed by connecting the center point of the cross section to the two ends of the first surface is 40 degrees, and an included angle formed by connecting the center point of the cross section to the two ends of the second surface is 60 degrees.
In one embodiment, the firstOne surface area is 22.00mm2To 23.00mm2The area of the second surface is 40.00mm2To 42mm2In the meantime.
Further, the area of the first face is 22.77mm2The area of the second surface is 40.98mm2。
In one embodiment, in each of the at least one air inlets:
the flow resistance between the first surface and the second surface and close to the first surface is 62600-86131Pa1/2s/m3The flow resistance close to the second surface is 32279-76286Pa1/2s/m3。
Another aspect of the present invention provides an inhaler, comprising:
the shell comprises an upper shell and a lower shell connected with the upper shell, and the upper shell can rotate relative to the lower shell;
the storage container is arranged in the shell and used for storing the liquid;
the pressure assembly is arranged in the shell, one end of the pressure assembly extends into the storage container, so that the liquid stored in the storage container is obtained through the pressure assembly, and the obtained liquid is pressurized;
the nozzle is connected with the other end of the pressure assembly to atomize the obtained liquid in the pressure assembly; and
a blowing nozzle which is connected with the upper shell and is accommodated in the blowing nozzle,
it is characterized in that the blowing nozzle comprises:
a mouthpiece connecting section for connecting the mouthpiece to the upper housing;
the inner blowing nozzle cylinder is arranged in the center of the connecting part of the blowing nozzle, has openings at two ends and is used for accommodating the nozzle; and
the outer blowing nozzle barrel is arranged on the outer side of the inner blowing nozzle barrel and located on the same side of the connecting portion of the blowing nozzle with the inner blowing nozzle barrel, and at least one air inlet is formed in the outer blowing nozzle barrel.
In one embodiment, the height of the mouthpiece inner barrel in the height direction of the inhaler is less than the height of the mouthpiece outer barrel.
In one embodiment, the at least one air inlet is disposed along the same cross-section of the mouthpiece outer barrel.
In one embodiment, each of the at least one air inlets is located at a first face of the inner surface of the mouthpiece outer barrel with an area smaller than an area of the second face located at the outer surface of the mouthpiece outer barrel.
Further, in a cross section of the outer barrel of the mouthpiece perpendicular to the axial direction of the outer barrel of the mouthpiece and passing through both ends of the at least one air inlet, an angle formed by a line connecting a center point of the cross section to both ends of the first face is between 35 degrees and 45 degrees, and an angle formed by a line connecting the center point of the cross section to both ends of the second face is between 55 degrees and 65 degrees.
Further, an included angle formed by connecting the center point of the cross section to the two ends of the first surface is 40 degrees, and an included angle formed by connecting the center point of the cross section to the two ends of the second surface is 60 degrees.
In one embodiment, the first face has an area of 22.00mm2To 23.00mm2The area of the second surface is 40.00mm2To 42mm2In the meantime.
Further, the area of the first face is 22.77mm2The area of the second surface is 40.98mm2。
In one embodiment, in each of the at least one air inlets:
the flow resistance between the first surface and the second surface and close to the first surface is 62600-86131Pa1/2s/m3The flow resistance close to the second surface is 32279-76286Pa1/2s/m3。
Further, when the flow at the mouthpiece is maximum, the spray flow rate at the tip of the mouthpiece is between 1.04 and 2.43m/s and the gas flow rate at the air inlet is between 6.7 and 19.4 m/s.
In one embodiment, a pressure assembly comprises:
a biasing member disposed within the lower housing;
a holder disposed in the upper housing for holding the storage container, and connected to an upper end of the biasing member;
one end of the conveying pipe penetrates through the fixing piece and extends into the storage container, and the other end of the conveying pipe is connected to the nozzle; and
and a pump chamber provided in the transfer tube for temporarily storing the liquid pressed into the pump chamber.
Further, the biasing assembly includes:
a bias chamber held within the lower housing; and
a biasing spring disposed within the biasing chamber and axially compressible by rotating the lower housing to move the retainer downward in a height direction of the inhaler.
In one embodiment, the pressure assembly further comprises a check valve disposed within the transfer tube to prevent backflow of liquid within the pump chamber.
The inhaler mouthpiece and the inhaler using the inhaler mouthpiece have high flow resistance, and can assist a user to slowly and uniformly inhale atomized liquid, so that a better absorption effect is realized.
Drawings
The above and other aspects and features of the present invention will become apparent from the following description of the embodiments with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of an inhaler according to an exemplary embodiment of the present invention;
FIG. 2 is a perspective view of an inhaler mouthpiece according to an exemplary embodiment of the present invention;
FIG. 3 is a side view of the inhaler mouthpiece shown in FIG. 1;
FIG. 4 is an exploded schematic view of a mouthpiece and nozzle section of an inhaler according to one embodiment of the present invention;
FIG. 5 is a graph showing the change in flow rate at the center point of the top of the mouthpiece when a user uses the inhaler of the present disclosure in a slow deep inhalation mode; and
fig. 6 is a graph showing the change in flow rate at the center point of the air inlet when the inhaler of the present disclosure is used by a user in a slow deep inhalation mode.
Detailed Description
The structure of the mouthpiece and the inhaler of the inhaler according to the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the inhaler according to the present invention includes a housing 1 (including an upper housing 11 and a lower housing 12), a storage container 2, a pressure assembly, a mouthpiece 4, and a mouthpiece 5, wherein the storage container 2 and the pressure assembly are disposed in the housing, the mouthpiece 4 is connected to the storage container 2 by the pressure assembly, and an outlet of the mouthpiece 4 is engaged with the mouthpiece 5.
The housing 1 is the main part of the inhaler for housing the other components of the inhaler. The housing 1 includes an upper housing 11 and a lower housing 12 connected to the upper housing 11, wherein the upper housing 11 is rotatable relative to the lower housing 12 to actuate the pressure assembly to compress and deliver the solution in the reservoir 2 to the nozzle 4. In one embodiment, the housing 1 has a cylindrical shape. However, it will be appreciated by those skilled in the art that the housing 1 may also be of any other shape that is convenient for the user to hold. In addition, the housing 1 may be made of any material commonly used in the art, and is not particularly limited herein. The storage container 2 is provided inside the housing 1 for storing a liquid 21, such as a medical liquid or the like. The pressure assembly is disposed within the housing 1 and has one end protruding into the storage container 2 and the other end connected to the nozzle 4 to transfer the liquid 21 stored in the storage container 2 to the nozzle 4 through the pressure assembly. A nozzle 4 connected to the other end of the pressure assembly atomizes the liquid 21 drawn from the pressure assembly, and the atomized liquid 21 passes through the mouthpiece 5 for inhalation by the user.
Referring to fig. 2 and 3, the mouthpiece 5 of the inhaler includes a mouthpiece connecting section 51, a mouthpiece inner cylinder 52 and a mouthpiece outer cylinder 53, wherein the mouthpiece inner cylinder 52 and the mouthpiece outer cylinder 53 are both provided on the mouthpiece connecting section 51, and the mouthpiece outer cylinder 53 is provided outside the mouthpiece inner cylinder 52. The mouthpiece connecting section 51 is a main body portion of the mouthpiece 5, and can connect the mouthpiece 5 to the upper housing 11 of the inhaler. The mouthpiece inner cylinder 52 is provided at the center of the mouthpiece connecting section 51 and is opened at both ends, and when the mouthpiece connecting section 51 is connected to the upper housing 11, the mouthpiece 4 of the inhaler is connected to the pressure assembly (shown in fig. 4) from the upper portion of the mouthpiece 5 through the mouthpiece inner cylinder 52. The mouthpiece outer cylinder 53 and the mouthpiece inner cylinder 52 are located on the same side of the mouthpiece connecting section 51, and the mouthpiece outer cylinder 53 is provided with at least one air inlet 54 to blow air into the mouthpiece 5 to assist the flow of the liquid medicine spray when the inhaler is used by a patient. In one embodiment, the mouthpiece connecting section 51, the mouthpiece 5 content, and the mouthpiece outer cylinder 53 constituting the mouthpiece 5 are integrally formed.
The method of use of the inhaler according to the invention is described below with reference to figures 1 and 2. Opening the upper and lower cases 11 and 12 to connect the storage container 2 to the lower end of the pressure assembly; connecting the upper case 11 and the lower case 12; rotating the lower casing 12 to press the pressure assembly, which conveys the liquid 21 therein to the upper end of the pressure assembly and ejects it from the nozzle 4; when a user sucks the spray from the mouthpiece 5, the air entering from the mouthpiece outer cylinder 53 of the mouthpiece 5 forms bypass air, so that the user can suck the spray more smoothly. Therefore, the inhaler according to the present invention is simple in structure, and achieves a more excellent absorbing effect by the mouthpiece 5 portion being integrally formed.
With continued reference to fig. 1-3, the mouthpiece inner cylinder 52 is shorter in height than the mouthpiece outer cylinder 53 in the height direction of the inhaler. When the mouthpiece 4 of the inhaler is held in the mouthpiece inner barrel 52, the height of the mouthpiece 4 is lower than the height of the mouthpiece outer barrel 53, so that air entering via at least one air inlet 54 on the mouthpiece outer barrel 53 defines the total flow resistance at the outlet of the mouthpiece 5. In order to keep the air intake in the mouthpiece outer cylinder 53 uniform, at least one air inlet 54 is provided along the same cross section of the mouthpiece outer cylinder 53.
Referring to fig. 2, each of the at least one air inlet 54 provided on the mouthpiece outer cylinder 53 has a smaller area on a first face of the inner surface of the mouthpiece outer cylinder 53 than on a second face of the outer surface of the mouthpiece outer cylinder 53, thereby forming a slope between the first face and the second face and reducing the resistance of the outside air from entering the inside of the mouthpiece 5. In one embodiment, the first face has an area of 22.00mm2To 23.00mm2The area of the second surface is 40.00mm2To 42mm2In the meantime. Preferably, the first face has an area of 22.77mm2The area of the second surface is 40.98mm2. Referring to FIG. 2, in the direction perpendicular to the axial direction of the mouthpiece outer cylinder 53And in the cross section of the mouthpiece outer cylinder 53 passing through both ends of the at least one air inlet 54, an angle a formed by a line connecting a center point of the cross section to both ends of the first face is between 35 degrees and 45 degrees, and an angle B formed by a line connecting to both ends of the second face is between 55 degrees and 65 degrees. Preferably, an angle a formed by a line connecting a center point of the cross section to both ends of the first face is about 40 degrees, and an angle B formed by a line connecting to both ends of the second face is about 60 degrees. Referring to fig. 3, in one embodiment, the distance between the ends of the first face in the transverse direction is between 11.2mm and 13.2mm, preferably about 12.2 mm. The distance between the ends of the second face in the transverse direction is between 5.3mm and 7.3mm, preferably about 6.3 mm.
Referring to fig. 1, in one embodiment of the present invention, the pressure assembly includes a biasing member, a retainer 33, and a transfer tube 34.
The biasing member is disposed within the lower housing 12 and is compressible upon rotation of the lower housing 12 relative to the upper housing 11. In one embodiment, the biasing member may include a biasing chamber 31 and a biasing spring 32, wherein the biasing chamber 31 is retained within the lower housing 12 and the biasing spring 32 is disposed within the biasing chamber 31. Thus, the biasing spring 32 can be compressed in the axial direction of the biasing spring 32 by rotating the lower case 12, thereby bringing the retainer 33 downward in the height direction of the inhaler. A holder 33 is provided in the upper case 11 for holding the storage container 2, and the holder 33 is connected with an upper end of the biasing member. The transfer pipe 34 is for transferring the liquid 21 in the storage container 2, and has one end extending into the storage container 2 through the holder 33 and the other end connected to the nozzle 4. Thus, when the lower case 12 is rotated, the biasing member is compressed, thereby pushing the retainer 33 to move downward to compress the storage container 2; after the storage container 2 receives the compression, the liquid 21 stored therein flows upward through the transfer tube 34; releasing the biasing member, the resilience of which feeds the liquid 21 temporarily stored in the upper part of the conveying pipe 34 into the nozzle 4 having an atomizing action; further, the atomized liquid 21 is ejected through the nozzle 4 and sucked by the user. Preferably, the pressure assembly further comprises a check valve. A check valve is disposed in the transfer tube 34 for preventing the liquid 21 from flowing back. In one embodiment, the pressure assembly further comprises a filter device 35, the filter device 35 being arranged near the end of the transfer tube 34 connected to the nozzle 4 for further filtering of the liquid 21.
The effects of the mouthpiece 5 for an inhaler according to the present invention and the inhaler using the mouthpiece 5 will be described below with reference to test data, wherein the mouthpiece 5 for an inhaler has one or two air inlets 54.
The flow resistance of the inhaler air inlet 54 was measured using a flow analyzer, an aspirator pump and a pressure gauge. Connecting an air suction pump to an air suction hole of the flow analyzer, and adjusting the flow rate of the air suction pump to 38.8L/min; connecting the mouthpiece 5 with the flow analyzer using a conduit and placing a pressure gauge in the conduit to measure the pressure difference (i.e. the pressure difference before and after air enters the air inlet 54 of the mouthpiece 5); the flow resistance was calculated using equation (1):
where R is the flow resistance at the inlet 54, Δ P is the pressure difference between the pressure gauge measurement point and the ambient pressure, and V is the flow rate.
The flow resistance of the mouthpiece 5 with a single air inlet 54 was measured to be approximately 40662Pa1/2s/m3(ii) a The flow resistance of the mouthpiece 5 with the two air inlets 54 is about 21600Pa1/2s/m3。
Using the inhaler, the flow at the mouthpiece 5 peaks at 41.2 liters/minute at approximately 1.81 seconds when the user uses the inhaler with a slow and deep inhalation (SD).
Meanwhile, referring to table 1, the gas flow rates at the nozzle 4 and the mouthpiece 5 were measured using a COMSOL Multiphysics 5.3a software analog flow meter. When the flow at the mouthpiece 5 is maximum (i.e. 1.81 seconds), the spray flow rate at the mouthpiece 5 is between 1.04-2.43m/s and the gas flow rate at the gas inlet 54 is between 6.7-19.74 m/s.
TABLE 1
In another flow rate measurement test, the flow rate at the center point of the top of the mouth piece 5 was measured, and the measurement results are shown in fig. 5. As can be seen from fig. 5: when the user breathes slowly and deeply, the flow rate at the center point of the top of the mouthpiece 5 reaches a maximum of 2.43m/s at about 1.81s, after which the flow rate at the center point of the top of the mouthpiece 5 decreases parabolically to 0.
In another flow rate measurement test, the intake air speed at the center point of the intake port was measured, and the measurement results are shown in fig. 6. As can be seen from fig. 6: when the user breathes slowly and deeply, the gas flow rate at the center point of the gas inlet at about 1.81s reaches a maximum of 13.24m/s, after which the gas flow rate at the center point of the gas inlet is reduced parabolically to 0.
Although exemplary embodiments of the present invention have been described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (20)
1. An inhaler mouthpiece comprising:
a mouthpiece connecting section for connecting the mouthpiece to an inhaler body;
the inner blowing nozzle cylinder is arranged in the center of the connecting part of the blowing nozzle, and two ends of the inner blowing nozzle cylinder are opened; and
the outer barrel of the blowing nozzle is arranged on the outer side of the inner barrel of the blowing nozzle and located on the same side of the connecting portion of the blowing nozzle with the inner barrel of the blowing nozzle, and the outer barrel of the blowing nozzle is provided with at least one air inlet.
2. The inhaler mouthpiece of claim 1, wherein the height of the mouthpiece inner barrel in the height direction of the inhaler is smaller than the height of the mouthpiece outer barrel.
3. The inhaler mouthpiece of claim 1, wherein each of the at least one air inlets is smaller in area on a first face of the inner surface of the mouthpiece outer barrel than on a second face of the outer surface of the mouthpiece outer barrel.
4. The inhaler mouthpiece of claim 3, wherein in a cross section of the mouthpiece outer cylinder perpendicular to the axial direction of the mouthpiece outer cylinder and passing through both ends of the at least one air inlet, an angle formed by a line connecting a center point of the cross section to both ends of the first face is between 35 degrees and 45 degrees, and an angle formed by a line connecting a center point of the cross section to both ends of the second face is between 55 degrees and 65 degrees.
5. The inhaler mouthpiece of claim 4, wherein the angle formed by a line connecting the center point of the cross section to both ends of the first face is 40 degrees and the angle formed by a line connecting the center point of the cross section to both ends of the second face is 60 degrees.
6. An inhaler mouthpiece according to claim 3, wherein the first face has an area of 22.00mm2To 23.00mm2The area of the second face is 40.00mm2To 42mm2In the meantime.
7. The inhaler mouthpiece of claim 6, wherein the first face has an area of 22.77mm2The area of the second surface is 40.98mm2。
8. The inhaler mouthpiece of claim 3, wherein in each of the at least one air inlets:
the flow resistance between the first surface and the second surface and close to the first surface is 62600-86131Pa1/2s/m3The flow resistance close to the second surface is 32279-76286Pa1/2s/m3。
9. An inhaler, comprising:
a housing including an upper housing and a lower housing coupled to the upper housing, and the upper housing being rotatable relative to the lower housing;
a storage container disposed within the housing, the storage container for storing a liquid;
a pressure assembly disposed within the housing and having one end thereof extending into the storage container to acquire liquid stored in the storage container through the pressure assembly and pressurize the acquired liquid;
the nozzle is connected with the other end of the pressure assembly to atomize the liquid obtained in the pressure assembly; and
a mouthpiece connected with the upper housing and the nozzle accommodated in the mouthpiece,
characterized in that, the blow nozzle includes:
a mouthpiece connecting section for connecting the mouthpiece to the upper housing;
the inner blowing nozzle cylinder is arranged in the center of the connecting part of the blowing nozzle, has openings at two ends and is used for accommodating the nozzle; and
the outer barrel of the blowing nozzle is arranged on the outer side of the inner barrel of the blowing nozzle and located on the same side of the connecting portion of the blowing nozzle with the inner barrel of the blowing nozzle, and the outer barrel of the blowing nozzle is provided with at least one air inlet.
10. The inhaler of claim 9 wherein the mouthpiece inner barrel has a height in the height direction of the inhaler that is less than the height of the mouthpiece outer barrel.
11. An inhaler according to claim 9, wherein each of the at least one air inlet openings is of smaller area on a first face of the inner surface of the mouthpiece outer barrel than on a second face of the outer surface of the mouthpiece outer barrel.
12. An inhaler according to claim 11, wherein, in a cross-section of the mouthpiece outer barrel perpendicular to the axial direction of the mouthpiece outer barrel and passing through both ends of the at least one air inlet, the line connecting the centre point of the cross-section to both ends of the first face forms an angle of between 35 degrees and 45 degrees and the line connecting the centre point of the cross-section to both ends of the second face forms an angle of between 55 degrees and 65 degrees.
13. An inhaler according to claim 12, wherein the angle formed by a line connecting the centre point of the cross-section to the ends of the first face is 40 degrees and the angle formed by a line connecting the centre point of the cross-section to the ends of the second face is 60 degrees.
14. An inhaler according to claim 11, wherein the first face has an area of 22.00mm2To 23.00mm2The area of the second face is 40.00mm2To 42mm2In the meantime.
15. An inhaler according to claim 14, wherein the first face has an area of 22.77mm2The area of the second surface is 40.98mm2。
16. The inhaler of claim 11 wherein in each of the at least one air inlet openings:
the flow resistance between the first surface and the second surface and close to the first surface is 62600-86131Pa1/2s/m3The flow resistance close to the second surface is 32279-76286Pa1/2s/m3。
17. The inhaler of claim 11 wherein:
when the flow at the mouthpiece is maximum, the spray flow rate at the top of the mouthpiece is between 1.04-2.43m/s and the gas flow rate at the air inlet is between 6.7-19.4 m/s.
18. The inhaler of claim 9, wherein the pressure assembly comprises:
a biasing member disposed within the lower housing;
a holder disposed in the upper case to hold the storage container, and connected with an upper end of the biasing member;
a transfer tube having one end protruding into the storage container through the holder and the other end connected to the nozzle; and
a pump chamber provided within the transfer tube for temporarily storing the liquid pressed into the pump chamber.
19. The inhaler of claim 18, wherein the biasing assembly comprises:
a bias chamber retained within the lower housing; and
a biasing spring disposed within the biasing chamber and axially compressible by rotating the lower housing to move the retaining assembly downward along a height direction of the inhaler.
20. The inhaler of claim 18, wherein the pressure assembly further comprises a check valve disposed within the delivery tube to prevent backflow of liquid within the pump chamber.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051651.8A CN110882453A (en) | 2018-09-10 | 2018-09-10 | Inhaler mouthpiece and inhaler |
| TW107135798A TWI704014B (en) | 2018-09-10 | 2018-10-11 | Mouthpiece of inhaler and inhaler having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811051651.8A CN110882453A (en) | 2018-09-10 | 2018-09-10 | Inhaler mouthpiece and inhaler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110882453A true CN110882453A (en) | 2020-03-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811051651.8A Pending CN110882453A (en) | 2018-09-10 | 2018-09-10 | Inhaler mouthpiece and inhaler |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110882453A (en) |
| TW (1) | TWI704014B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5860416A (en) * | 1996-04-25 | 1999-01-19 | Bespak Plc | Inhalers |
| CN101347649A (en) * | 2007-07-20 | 2009-01-21 | 佳能株式会社 | Inhaler |
| CN101443066A (en) * | 2006-05-16 | 2009-05-27 | 霍维翁英特股份公司 | Simple inhaler |
| CN101795721A (en) * | 2007-06-15 | 2010-08-04 | 贝林格尔.英格海姆国际有限公司 | Inhaler |
| CN209713891U (en) * | 2018-09-10 | 2019-12-03 | 微邦科技股份有限公司 | Inhalator blow gun and inhalator |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2020249A1 (en) * | 2007-08-01 | 2009-02-04 | Boehringer Ingelheim Pharma GmbH & Co. KG | Inhalator |
| EP2135632A1 (en) * | 2008-06-20 | 2009-12-23 | Boehringer Ingelheim International Gmbh | Inhalator |
| WO2015006639A1 (en) * | 2013-07-12 | 2015-01-15 | SILVA, John, H. | Mouthpiece for inhalers |
| CN204798607U (en) * | 2015-04-27 | 2015-11-25 | 随州市中心医院 | Otolaryngology liquid medicine spraying device |
| CN205796192U (en) * | 2016-05-31 | 2016-12-14 | 杨帆 | A kind of portable Inhalational anesthesia device |
-
2018
- 2018-09-10 CN CN201811051651.8A patent/CN110882453A/en active Pending
- 2018-10-11 TW TW107135798A patent/TWI704014B/en active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5860416A (en) * | 1996-04-25 | 1999-01-19 | Bespak Plc | Inhalers |
| CN101443066A (en) * | 2006-05-16 | 2009-05-27 | 霍维翁英特股份公司 | Simple inhaler |
| CN101795721A (en) * | 2007-06-15 | 2010-08-04 | 贝林格尔.英格海姆国际有限公司 | Inhaler |
| CN101347649A (en) * | 2007-07-20 | 2009-01-21 | 佳能株式会社 | Inhaler |
| CN209713891U (en) * | 2018-09-10 | 2019-12-03 | 微邦科技股份有限公司 | Inhalator blow gun and inhalator |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI704014B (en) | 2020-09-11 |
| TW202010573A (en) | 2020-03-16 |
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