A breath flow rate measuring spirometer

Abstract

The utility model relates to the technical field of air suction appearance, puts forward a kind of air suction flow rate measurement air suction appearance, including air suction appearance shell, the outer surface of air suction appearance shell is equipped with key board, and the front end surface electric connection of key board has display screen, the outer surface of rotating cylinder is integrally connected with propeller blade, and the inner wall sliding connection of rotating cylinder is equipped with mounting bracket, the mounting bracket includes support frame, middle shaft, sliding block and propeller sensor, the filter screen is installed in the left side inner wall of air inlet cylinder, and the left side wall of air inlet cylinder is equipped with the clamping groove, the airflow cylinder is integrally connected in the middle part of left cover plate, the right end surface of left cover plate is fixedly connected with the limiting block. This air suction flow rate measurement air suction appearance is convenient for being applied to a variety of patients, and airflow change data collection and processing can be carried out for patients with nasal congestion and asthma, and the disinfection treatment can be replaced after being used by different patients.

Description

Technical Field

[0001] This utility model relates to the field of inhalation instrument technology, specifically to an inhalation instrument for measuring inhalation flow rate. Background Technology

[0002] Currently, inhalation therapy is an effective treatment for chronic airway diseases, and the correct selection and use of inhalation devices is an indispensable part of chronic airway disease management. However, how to choose the right inhalation device for a patient has always been a problem that troubles clinicians. Accurately obtaining inspiratory flow rate data is of great significance in the medical diagnosis and treatment process. Inspiratory flow rate can reflect key physiological information such as the patency of the patient's airway and the strength of respiratory muscles, playing a crucial role in the diagnosis, treatment planning, and disease monitoring of respiratory diseases such as chronic obstructive pulmonary disease and asthma.

[0003] Peak inspiratory flow rate (PIF) measurement has become an important part of the inhalation device selection process. Currently, the methods and equipment used in clinical practice to measure inspiratory flow rate have many limitations. In my country, the usage rate of peak inspiratory flow rate (PIF) meters is relatively low. At present, doctors often rely on their own experience when selecting inhalation devices for patients, and most COPD patients are usually considered by doctors to be "unable to inhale". However, relevant studies have shown that under stable conditions, it is rare for COPD patients to have insufficient peak inspiratory flow rate, while excessively high peak flow rate is more common. This research result fully illustrates that relying solely on experience to select inhalation devices has significant limitations in reliability. Currently, respiratory function training devices used in clinical practice have inhalation drug administration assessment functions, but most general hospitals do not use them. In clinical practice, patients using inhaled drugs do not undergo inhalation capacity testing. Therefore, I want to design a simplified device to measure the patient's peak inspiratory flow rate.

[0004] Prior art 1 (application number: CN202221896402.0) discloses a nasal inhalation peak flow meter, comprising a cylinder, an air inlet hood installed on one side of the cylinder, a guide channel fixed on the side of the cylinder away from the air inlet hood, an inhalation hood inserted into the guide channel away from the cylinder, an airway provided on the other side of the cylinder, an electronic airflow velocity sensor installed on the inner side of the cylinder and on the side of the airway away from the air inlet hood, a display screen provided on the outer side of the cylinder, a nasal plug assembly installed on the inner side of the inhalation hood, a filter plate installed on the inner side of the air inlet hood, and a disassembly assembly installed on the inner side of the air inlet hood for disassembling and assembling the filter plate. The nasal plug assembly includes a detachable mounting post located on the inner side of the inhalation hood. It can measure the flow rate of inhaled air through the nostrils and can determine the airflow velocity of a single nostril, thereby providing data support for doctors' diagnosis.

[0005] However, in implementing the relevant technology, the above-mentioned nasal peak flow meter was found to have the following problems: the existing nasal peak flow meter can only measure airflow changes when the nose is congested, and it is inconvenient to collect and process airflow changes through the mouth during asthma, thus limiting its use. Utility Model Content

[0006] This invention proposes an inspiratory flow rate measuring instrument, which solves the problem that existing nasal peak inspiratory flow rate meters can only measure airflow changes when the nose is congested, and it is inconvenient to collect and process airflow changes through the mouth during asthma, thus limiting their use.

[0007] The technical solution of this utility model is as follows: an inhalation flow rate measuring instrument, including an inhalation instrument housing, a keypad is installed on the outer surface of the inhalation instrument housing, and a display screen is electrically connected to the front end face of the keypad.

[0008] A rotating cylinder, wherein propeller blades are integrally connected to the outer surface of the rotating cylinder, and a mounting bracket is slidably connected to the inner wall of the rotating cylinder;

[0009] Mounting frame, the mounting frame including a support frame, a central shaft, a slider and a propeller sensor;

[0010] Also includes:

[0011] The filter screen is snapped onto the inner left side wall of the air intake cylinder, and the left side wall of the air intake cylinder has a slot.

[0012] An airflow tube is integrally connected to the middle of the left cover plate, and a one-way valve is threadedly connected to the right end opening of the airflow tube. The left end of the upper one-way valve is connected to a nasal mask, and the lower end of the lower one-way valve is connected to an oral mask.

[0013] A limiting block is fixedly connected to the right end face of the left cover plate, and the upper and lower ends of the left cover plate are both fixedly connected with hanging ears.

[0014] Preferably, the air intake cylinder has a funnel-shaped structure, and the air intake cylinder is engaged with the limiting block through a slot. The limiting block forms a sliding structure inside the air intake cylinder through a limiting hole, and a disassembly structure is formed between the air intake cylinder and the left cover plate.

[0015] Preferably, both the oral mask and the nasal mask are connected to the limiting block by means of a sleeve, and the airflow tube passes through the left cover plate and the filter, the air inlet tube and the right cover plate to form a connected structure, and both the oral mask and the nasal mask are made of rubber.

[0016] Preferably, the rotating cylinder has a hollow cylindrical structure, and the propeller blades form a rotating structure on the central shaft through the rotating cylinder, and a slider is integrally fixedly connected to the outer surface of the left end of the central shaft.

[0017] Preferably, the rotating cylinder forms a sliding structure on the central shaft via a slider, and the central shaft is fixedly connected to the middle of the support frame, and the support frame is integrally fixedly connected to the middle of the right cover plate, and a propeller sensor is installed and connected to the outer surface of the middle part of the central shaft.

[0018] Preferably, the propeller blades are made of carbon fiber composite material, and the propeller blades are arranged in a spiral shape on the outer surface of the rotating cylinder.

[0019] Preferably, the outer surface of the support frame is tightly fitted to the right inner wall of the inhalation device housing, and the left inner wall of the inhalation device housing is tightly fitted to the left outer surface of the air inlet cylinder.

[0020] Preferably, the diameter of the right cover plate is larger than the opening size of the inhalation device housing, and the diameter of the left cover plate is larger than the opening size of the inhalation device housing, and the inhalation device housing has a cylindrical structure.

[0021] The working principle and beneficial effects of this utility model are as follows: It is mainly designed to facilitate use by a variety of patients, and can collect and process airflow change data for patients with nasal congestion and asthma. In addition, it can be replaced and disinfected after use for different patients.

[0022] 1. In this utility model, an oral mask and a nasal mask are provided. The oral mask and the nasal mask are connected to the airflow cylinder through a one-way valve. Both the oral mask and the nasal mask are made of rubber, which increases the comfort of the patient during use and ensures good sealing to prevent air leakage during inhalation. At the same time, the one-way ventilation function of the one-way valve is used to avoid mutual interference between the oral mask and the nasal mask during use, making it convenient to use.

[0023] 2. In this utility model, a locking connection is provided between the limiting block and the slot. At the same time, the limiting block is slidably connected to the inside of the air inlet cylinder through the limiting hole, so as to facilitate the connection and fixation of the left cover plate to the air inlet cylinder, making it convenient to install and fix the air inlet cylinder, so as to facilitate the blowing of airflow to the propeller blades through the air inlet cylinder, and to facilitate airflow measurement.

[0024] 3. In this utility model, a rotating cylinder and propeller blades are provided. The propeller blades are made of lightweight but strong carbon fiber composite material. This material can ensure that the propeller blades rotate rapidly under the action of airflow, and also has sufficient strength to prevent damage due to long-term use. At the same time, the propeller blades slide on the slider on the central shaft through the rotating cylinder to ensure the stability of the rotation process. Attached Figure Description

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] Figure 1This is a schematic diagram of the overall structure proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the internal disassembly structure proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the air intake cylinder structure proposed in this utility model;

[0029] Figure 4 This is a schematic diagram of the left cover plate structure proposed in this utility model;

[0030] Figure 5 This is a schematic diagram of the mounting bracket structure proposed in this utility model;

[0031] Figure 6 This is a schematic diagram of the workflow proposed in this utility model.

[0032] In the diagram: 1. Inhalation device housing; 2. Display screen; 3. Keypad; 4. Right cover; 5. Left cover; 6. Hanger; 7. Airflow tube; 8. Limiting block; 9. Inlet tube; 10. Slot; 11. Limiting hole; 12. Filter screen; 13. Oral mask; 14. Nasal mask; 15. Propeller blade; 16. Mounting bracket; 1601. Support frame; 1602. Central shaft; 1603. Slider; 1604. Propeller sensor; 17. Rotating cylinder; 18. One-way valve. Detailed Implementation

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0034] Please see Figures 1-6 This utility model provides a technical solution for an inhalation flow rate measuring instrument, including an inhalation instrument housing 1, a display screen 2, a keypad 3, a right cover plate 4, a left cover plate 5, a hanging ear 6, an airflow cylinder 7, a limiting block 8, an air inlet cylinder 9, a slot 10, a limiting hole 11, a filter screen 12, an oral mask 13, a nasal mask 14, a propeller blade 15, a mounting bracket 16, a support frame 1601, a central shaft 1602, a slider 1603, a propeller sensor 1604, a rotating cylinder 17, and a one-way valve 18.

[0035] The working principle and usage process of this utility model are as follows: First, combined with... Figure 1 and Figure 2As shown, the air inlet cylinder 9 has a funnel-shaped structure, and the air inlet cylinder 9 is engaged with the limiting block 8 through the slot 10. The limiting block 8 forms a sliding structure inside the air inlet cylinder 9 through the limiting hole 11. The air inlet cylinder 9 and the left cover plate 5 form a detachable structure. The oral mask 13 and the nasal mask 14 are both connected to the limiting block 8 by a sleeve. The airflow cylinder 7 passes through the left cover plate 5 and forms a communication structure between the filter screen 12, the air inlet cylinder 9 and the right cover plate 4. The oral mask 13 and the nasal mask 14 are both made of rubber, which makes it easy to tightly connect and fix the left cover plate 5 to the air inlet cylinder 9 to prevent it from falling off. It is also easy to disassemble and replace. The use of rubber material for the oral mask 13 and the nasal mask 14 increases the comfort of patients during use, while ensuring good sealing to prevent air leakage during inhalation.

[0036] Combination Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the rotating cylinder 17 has a hollow cylindrical structure, and the propeller blades 15 form a rotating structure on the central shaft 1602 via the rotating cylinder 17. A slider 1603 is integrally fixedly connected to the outer surface of the left end of the central shaft 1602, and the rotating cylinder 17 forms a sliding structure on the central shaft 1602 via the slider 1603. The central shaft 1602 is fixedly connected to the middle of the support frame 1601, and the support frame 1601 is integrally fixedly connected to the middle of the right cover plate 4. A propeller sensor 1604 is installed on the outer surface of the middle part of the central shaft 1602. The propeller blades 15 are made of carbon fiber composite material. Furthermore, the propeller blades 15 are spirally arranged on the outer surface of the rotating cylinder 17, and the outer surface of the support frame 1601 is tightly fitted with the inner right side wall of the inhalation device housing 1, and the inner left side wall of the inhalation device housing 1 is tightly fitted with the outer left end of the air intake cylinder 9. The propeller blades 15 are made of lightweight but strong carbon fiber composite material. This material can ensure that the blades rotate rapidly under the action of airflow, and also has sufficient strength to prevent damage due to long-term use. The propeller blades 15 slide on the slider 1603 on the central shaft 1602 through the rotating cylinder 17 to ensure the stability of the rotation process.

[0037] Combination Figure 1 and Figure 2 As shown, the diameter of the right cover plate 4 is larger than the opening size of the inhalation device housing 1, and the diameter of the left cover plate 5 is larger than the opening size of the inhalation device housing 1. The inhalation device housing 1 has a cylindrical structure. The filter screen 12 and the air inlet cylinder 9 are installed and fixed through the left cover plate 5, which facilitates the positioning and fixing of the slot 10. At the same time, the propeller blade 15, the rotating cylinder 17 and the mounting bracket 16 are engaged with the right end of the inhalation device housing 1 through the right cover plate 4, which facilitates installation and fixing, and also facilitates disassembly, replacement and maintenance.

[0038] The microprocessor, as the core computing unit of the entire inspiratory device, uses a high-performance, low-power chip. It receives electrical signals from the propeller sensor 1604 and, based on pre-stored calibration data and algorithms, converts the rotational speed of the propeller blades 15 into corresponding inspiratory flow rate values. The microprocessor performs real-time analysis and processing of flow rate data throughout the inspiratory process, recording the maximum peak inspiratory flow value. The microprocessor also coordinates the work between various modules of the inspiratory device, such as controlling the data display of the display module, the data storage of the storage module, and the functional response of the operation buttons. The display screen 2 is located on the front of the inspiratory device casing 1, facilitating data viewing for medical personnel. The high-resolution LCD screen has excellent viewing angles and contrast, clearly displaying data even under different lighting conditions. The display screen 2 is divided into two areas; the upper half displays the currently measured inspiratory flow rate value in real-time with larger numbers, providing accurate readings. The data is displayed to one decimal place, in liters per second (L / s). The lower half shows the change in inspiratory flow rate over time as a dynamic curve. The time axis is in seconds, with the horizontal axis representing inspiratory time and the vertical axis representing inspiratory flow rate. By observing the trend and peak values ​​of the curve, medical staff can intuitively understand the changes in flow rate during the patient's inhalation. The storage module uses a high-capacity flash memory chip, capable of storing at least 1000 sets of patient measurement data. Each set of data includes basic patient information such as name, age, and medical record number, measurement time, and detailed inspiratory flow rate data, including real-time flow rate values ​​and maximum inspiratory peak flow values. The storage module is connected to the microprocessor via a high-speed data bus to ensure fast data storage and retrieval. Medical staff can view historical measurement data on the display module using operation buttons, and select different patient records for comparative analysis to better understand the development of the patient's condition and the treatment effect.

[0039] During operation, medical staff first press the switch on keypad 3 to start the inspiratory device. After the instrument completes its self-test, the interfaces of the nasal mask 14 and oral mask 13 are gently placed on the patient's mouth and nose, ensuring a good seal. Then, the start button on keypad 3 is pressed, and the patient begins to inhale. The propeller blades 15 rotate under the action of airflow, and the generated electrical signals are transmitted to the microprocessor for processing. The real-time inspiratory flow rate value and curve are immediately displayed on display screen 2. After inhalation, the medical staff presses the stop button on keypad 3, and the measurement data is automatically stored. If historical data needs to be viewed, it can be operated through the data query button and other relevant buttons. This is the workflow of the inspiratory flow rate measurement inspiratory device.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An inhalation flow rate measuring device, comprising an inhalation device housing (1), wherein a keypad (3) is mounted on the outer surface of the inhalation device housing (1), and a display screen (2) is electrically connected to the front end face of the keypad (3); A rotating cylinder (17) has a propeller blade (15) integrally connected to its outer surface, and a mounting bracket (16) is slidably connected to the inner wall of the rotating cylinder (17). Mounting bracket (16), the mounting bracket (16) includes a support frame (1601), a central shaft (1602), a slider (1603) and a propeller sensor (1604); Its features are, Also includes: The filter screen (12) is snapped onto the inner left side wall of the air inlet cylinder (9), and the left side wall of the air inlet cylinder (9) is provided with a slot (10). Airflow tube (7), the airflow tube (7) is integrally connected to the middle of the left cover plate (5), and a one-way valve (18) is threadedly connected to the right end opening of the airflow tube (7), and the left end of the upper one-way valve (18) is connected to the nasal mask (14), and the lower end of the lower one-way valve (18) is connected to the oral mask (13). The limiting block (8) is fixedly connected to the right end face of the left cover plate (5), and the upper and lower ends of the left cover plate (5) are both fixedly connected with hanging ears (6).

2. The inhalation flow rate measuring instrument according to claim 1, characterized in that, The air inlet cylinder (9) has a funnel-shaped structure, and the air inlet cylinder (9) is engaged with the limiting block (8) through the slot (10). The limiting block (8) forms a sliding structure inside the air inlet cylinder (9) through the limiting hole (11), and the air inlet cylinder (9) and the left cover plate (5) form a disassembly structure.

3. The inhalation flow rate measuring instrument according to claim 1, characterized in that, The oral mask (13) and nasal mask (14) are both connected to the limiting block (8) by means of sleeve, and the airflow tube (7) passes through the left cover plate (5) and forms a communication structure with the filter (12), the air inlet tube (9) and the right cover plate (4), and the oral mask (13) and nasal mask (14) are both made of rubber.

4. The inhalation flow rate measuring instrument according to claim 1, characterized in that, The rotating cylinder (17) has a hollow cylindrical structure, and the propeller blade (15) forms a rotating structure on the central shaft (1602) through the rotating cylinder (17). The slider (1603) is integrally fixedly connected to the outer surface of the left end of the central shaft (1602).

5. The inhalation flow rate measuring instrument according to claim 4, characterized in that, The rotating cylinder (17) forms a sliding structure on the central shaft (1602) through the slider (1603), and the central shaft (1602) is fixedly connected to the middle of the support frame (1601). The support frame (1601) is integrally fixedly connected to the middle of the right cover plate (4), and a propeller sensor (1604) is installed on the outer surface of the middle part of the central shaft (1602).

6. The inhalation flow rate measuring instrument according to claim 1, characterized in that, The propeller blades (15) are made of carbon fiber composite material, and the propeller blades (15) are arranged in a spiral shape on the outer surface of the rotating cylinder (17).

7. The inhalation flow rate measuring instrument according to claim 1, characterized in that, The outer surface of the support frame (1601) is tightly fitted to the right inner wall of the inhalation device housing (1), and the left inner wall of the inhalation device housing (1) is tightly fitted to the left outer surface of the air inlet cylinder (9).

8. The inhalation flow rate measuring instrument according to claim 5, characterized in that, The diameter of the right cover plate (4) is larger than the opening size of the inhalation device housing (1), and the diameter of the left cover plate (5) is larger than the opening size of the inhalation device housing (1), and the inhalation device housing (1) has a cylindrical structure.

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