Inhalation airflow detection device

Abstract

The utility model relates to the technical field of airflow detection, in particular to an inspiration airflow detection device, which comprises an airflow channel which is a longitudinal ventilation cavity enclosed by a shell. The airflow guide cavity is formed in the top of the airflow channel, a first ventilation opening is formed in the bottom end of the shell, and a second ventilation opening is formed in the side wall of the airflow guide cavity; the second air vent is used for being communicated with an air inlet of the dry powder medicine preparation, and the shape of the second air vent is matched with that of the air inlet of the dry powder medicine preparation connected with the second air vent; and the sensor mechanism is arranged on the side wall of the shell. The inspiration airflow detection device provided by the utility model can be matched with a dry powder medicine preparation for use, is used for detecting the flow rate of the inspiration airflow of a patient in the medication process, and solves the problem that a gas flow sensor is difficult to be matched with the dry powder medicine preparation in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of airflow detection, in particular to an inhalation airflow detection device. Background Art

[0002] Inhalation medication is the most direct way to administer medication. Because the drug can quickly reach the target organ, it has the advantages of rapid onset, good efficacy, and few side effects. Therefore, it has become increasingly widely used. However, inhalation medication requires patients to master certain inhalation techniques, and good inhalation techniques have a significant impact on the patient's medication effect. For dry powder preparations, the assessment of inhalation technique requires reference to the patient's airflow during inhalation. Therefore, detecting the inhaled airflow during inhalation has become a test item for dry powder preparation inhalation technique. However, existing gas flow sensors are difficult to use directly with dry powder preparations. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the related art. To this end, the present invention provides an inhalation airflow detection device.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is:

[0005] An inhalation airflow detection device, comprising:

[0006] an air flow channel, wherein the air flow channel is a longitudinal ventilation cavity enclosed by the shell;

[0007] An airflow guiding cavity is provided at the top of the airflow channel, a first vent is provided at the bottom end of the housing, and a second vent is provided on a side wall of the airflow guiding cavity;

[0008] The second vent is used to communicate with the air inlet of the dry powder drug preparation, and the shape of the second vent is adapted to the shape of the air inlet of the connected dry powder drug preparation;

[0009] It also includes a sensor mechanism, which is arranged on the side wall of the housing.

[0010] Furthermore, the shell is a flat plate structure.

[0011] Furthermore, the air flow channel is divided into a main air flow channel and a secondary air flow channel of different sizes by a longitudinal partition, and the sensor mechanism is arranged on a side wall of the secondary air flow channel.

[0012] Furthermore, the width ratio of the ventilation cavity of the secondary air flow channel to that of the primary air flow channel is 1:8 to 1:3.

[0013] Furthermore, the width ratio of the ventilation cavity of the secondary air flow channel to that of the primary air flow channel is 1:5.

[0014] Furthermore, the shell has a consistent thickness.

[0015] Furthermore, it also includes a sealing ring, which is arranged at the open end of the airflow guiding cavity and along the inner edge of the open end of the airflow guiding cavity.

[0016] Furthermore, the sealing ring is made of medical silicone.

[0017] Furthermore, it also includes a protrusion, which is arranged on the side edge of the outer side surface of the side wall opposite to the opening end of the airflow guiding cavity.

[0018] Furthermore, the shell is made of plastic.

[0019] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0020] This utility model provides an inspiratory airflow detection device that can be used in conjunction with dry powder pharmaceutical preparations to measure the flow rate of the patient's inspiratory airflow during medication administration. This solves the problem of existing gas flow sensors being unable to adapt to dry powder pharmaceutical preparations. A sensor mechanism, located on the sidewall of the airflow channel, can detect the flow rate of the patient's inspiratory airflow during medication administration, providing a basis for accurately assessing the patient's drug inhalation status.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of an inhalation airflow detection device provided by an embodiment of the present utility model.

[0024] Figure 2 It is a schematic structural diagram of a dry powder drug preparation in the prior art.

[0025] Figure 3 This is a schematic diagram of the use status of an inhalation airflow detection device provided by an embodiment of the present utility model.

[0026] Reference numerals:

[0027] 1. Air flow channel; 11. Main air flow channel; 12. Secondary air flow channel; 2. Housing; 21. First air vent; 3. Air flow guiding cavity; 31. Second air vent; 32. Protrusion; 4. Air inlet for dry powder drug preparation; 5. Air inlet for dry powder drug preparation; 6. Sensor mechanism; 7. Sealing ring. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. The following embodiments are used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for the purpose of facilitating the description of the embodiments of the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this specification, reference to the term "a specific embodiment" or the like means that the specific features, structures, materials, or characteristics of the embodiment are included in at least one embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in any one or more embodiments. In addition, those skilled in the art may combine and combine the features of the different embodiments described in this specification unless they are mutually inconsistent.

[0031] The following combination Figures 1 to 3 The utility model describes an inhalation airflow detection device.

[0032] An inhalation airflow detection device, comprising:

[0033] An air flow channel 1, which is a longitudinal ventilation cavity enclosed by the shell 2;

[0034] An airflow guiding cavity 3 is provided at the top of the airflow channel 1 , a first vent 21 is provided at the bottom end of the housing 2 , and a second vent 31 is provided on the side wall of the airflow guiding cavity 3 ;

[0035] The second vent 31 is used to communicate with the air inlet 4 of the dry powder drug preparation, and the shape of the second vent 31 is adapted to the shape of the air inlet 4 of the connected dry powder drug preparation;

[0036] When the patient inhales the medicine, the second air vent 31 is close to the air inlet 4 of the dry powder medicine preparation, and the inhaled air flow can enter the air flow channel 1 through the first air vent 21. Through the guiding effect of the air flow guiding cavity 3, the inhaled air flow passes through the second air vent 31 and the air inlet 4 of the dry powder medicine preparation and enters the interior of the dry powder medicine preparation. The inhaled air flow entering the interior of the medicine preparation drives the dry powder medicine to be discharged from the air inlet 5 of the dry powder medicine preparation, and finally the medicine enters the patient's respiratory tract along with the inhaled air flow.

[0037] The housing 2 further comprises a sensor mechanism 6, which is arranged on the side wall of the housing 2. The sensor mechanism 6 is a conventional design in the prior art, and comprises a gas flow rate sensor for measuring the flow rate of the inspiratory airflow.

[0038] According to a specific embodiment of the present invention, the housing 2 is a flat plate structure. The housing 2 is designed as a flat plate structure so that the air flow channel 1 formed therein is square or rectangular, which facilitates smoother inhaled air flow through the air flow channel 1 and into the interior of the dry powder drug.

[0039] According to a specific embodiment provided by the present invention, the airflow channel 1 is divided into a main airflow channel 11 and a secondary airflow channel 12 of different sizes by a longitudinal partition, and the sensor mechanism 6 is arranged on the side wall of the secondary airflow channel 12. The design method of dividing the airflow channel 1 into the main and secondary airflow channels allows most of the airflow inhaled by the human body to enter the dry powder drug preparation through the main airflow channel 11. The gas capacity of the main airflow channel 11 is larger than the gas capacity of the secondary airflow channel 12, so it does not affect the inhalation resistance. The secondary airflow channel 12 is used to test the airflow velocity. The secondary airflow channel 12 is narrower than the main airflow channel 11, which can amplify the range of the gas flow rate. The amplified range can cover the highest flow rate when the patient inhales, so the sensor mechanism 6 can more sensitively detect slight changes in the inhaled airflow.

[0040] According to a specific embodiment of the present invention, the width ratio of the ventilation cavity of the secondary airflow channel 12 to the ventilation cavity of the primary airflow channel 11 is 1:8 to 1:3. Within this width ratio range, the secondary airflow channel 12 and the primary airflow channel 11 can ensure that the inhaled airflow can smoothly enter the interior of the dry powder drug through the primary airflow channel 11, while also ensuring that the secondary airflow channel 12 can sensitively detect changes in the inhaled airflow.

[0041] According to a specific embodiment of the present invention, the width ratio of the ventilation cavity of the secondary airflow channel 12 to the ventilation cavity of the primary airflow channel 11 is 1:5. When the width ratio of the secondary airflow channel 12 to the primary airflow channel 11 is at this ratio, the inhaled airflow entering the interior of the dry powder drug through the primary airflow channel 11 and the changes in the inhaled airflow sensed by the secondary airflow channel 12 both reach an optimal state.

[0042] According to a specific embodiment of the present invention, the outer shell 2 has a uniform thickness. The purpose of setting the outer shell 2 to have a uniform thickness is to ensure that the airflow passes through the airflow channel 1 smoothly.

[0043] According to a specific embodiment provided by the present invention, a sealing ring 7 is further included. The sealing ring 7 is disposed at the open end of the airflow guiding cavity 3 and is disposed along the inner edge of the open end of the airflow guiding cavity 3. The sealing ring 7, through a certain pressing force, enables the second vent 31 to be more closely attached to the air inlet 4 of the dry powder drug preparation, thereby ensuring that the vast majority of the inhaled air flow enters the interior of the dry powder drug preparation through the airflow channel 1, thereby ensuring that the patient effectively inhales the drug, thereby achieving the ultimate effective treatment purpose.

[0044] According to a specific embodiment provided by the present invention, the sealing ring 7 is made of medical silicone. Silica gel, also known as silicone rubber, is a rubber material containing silicon. It has the advantages of being safe and non-toxic, insoluble in water and any solvents, non-toxic and odorless, chemically stable, and unreactive with any substance except strong alkali and hydrofluoric acid. It has high adsorption performance, good thermal stability, and stable chemical properties, and is widely used in medical devices.

[0045] According to a specific embodiment of the present invention, a protrusion 32 is further included, extending horizontally outwardly along the outer side edge of the side wall opposite the open end of the airflow guiding cavity 3. The protrusion 32 is provided to facilitate the patient to separate the inspiratory airflow detection device from the dry powder drug preparation after taking the drug.

[0046] According to a specific embodiment of the present invention, the housing 2 is made of plastic, which is light and cheap, and is easy to promote and use.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An inhalation airflow detection device, characterized in that: include: an air flow channel, wherein the air flow channel is a longitudinal ventilation cavity enclosed by the shell; An airflow guiding cavity is provided at the top of the airflow channel, a first vent is provided at the bottom end of the housing, and a second vent is provided on a side wall of the airflow guiding cavity; The second vent is used to communicate with the air inlet of the dry powder drug preparation, and the shape of the second vent is adapted to the shape of the air inlet of the connected dry powder drug preparation; It also includes a sensor mechanism, which is arranged on the side wall of the housing.

2. The inhalation airflow detection device according to claim 1, wherein: The shell is a flat plate structure.

3. The inhalation airflow detection device according to claim 2, wherein: The air flow channel is divided into a main air flow channel and a secondary air flow channel of different sizes by a longitudinal partition plate, and the sensor mechanism is arranged on the side wall of the secondary air flow channel.

4. The inhalation airflow detection device according to claim 3, characterized in that: The width ratio of the ventilation cavity of the secondary air flow channel to that of the primary air flow channel is 1:8 to 1:

3.

5. The inhalation airflow detection device according to claim 4, characterized in that: The width ratio of the ventilation cavity of the secondary air flow channel to that of the primary air flow channel is 1:

5.

6. The inhalation airflow detection device according to claim 1, wherein: The shell has a uniform thickness.

7. The inhalation airflow detection device according to claim 1, wherein: It also includes a sealing ring, which is arranged at the open end of the airflow guiding cavity and along the inner edge of the open end of the airflow guiding cavity.

8. The inhalation airflow detection device according to claim 7, wherein: The sealing ring is made of medical silicone.

9. The inhalation airflow detection device according to claim 8, wherein: It also includes a protrusion, which is arranged on the side edge of the outer side surface opposite to the side wall of the opening end of the airflow guiding cavity.

10. The inhalation airflow detection device according to claim 1, wherein: The shell is made of plastic.

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