CN112641439A - Hand-held breath flow rate real-time detection curve screen display device - Google Patents

Abstract

Hand-held type expiratory flow velocity real-time detection curve screen display device, including detecting the shell, it is equipped with the handle shell to detect shell lower part an organic whole, it is all uncovered to detect shell front side and rear side, it can dismantle to be connected with disposable breathing filter to detect the shell front side, disposable silica gel mouthpiece is installed to disposable breathing filter front end, be provided with respiratory flow velocity sensor in the detection shell, be equipped with singlechip and rechargeable battery in the handle shell, rechargeable battery is located the singlechip below, rechargeable battery passes through the wire and is connected with the singlechip, it is equipped with the display to detect shell top level, the singlechip passes through the signal line and is connected with display and respiratory flow velocity sensor respectively. The invention can be used as a practical tool suitable for clinical student learning, physical examination, primary screening of lung diseases and observation of curative effect. The screen display contrast device for displaying the expiratory flow rate in real time in clinic has the characteristics of no wound, simplicity, convenience, rapidness, accuracy, low cost, quick response and the like.

Description

Hand-held breath flow rate real-time detection curve screen display device

Technical Field

The invention belongs to the technical field of medical detection and diagnosis, and particularly relates to a handheld breath flow rate real-time detection curve screen display device.

Background

Currently, the measurement of the respiratory function in the world is troublesome, even a plurality of county and city hospitals do not have instruments for measuring the respiratory function, on one hand, the respiratory system is difficult to measure, on the other hand, the instruments are huge, and the measurement is not simple and convenient, which is a main reason that the method cannot be popularized. Peak Expiratory Flow (PEF) is measured, but currently, a pocket-size peak velocity meter is generally used for the diagnosis and evaluation of some respiratory diseases such as asthma. The peak speed instrument is low in price and convenient to carry, and is suitable for objectively monitoring the airflow limitation condition of a patient at home every day. However, PEF measurements do not completely replace other lung function (e.g., FEV 1) indicators in both adults and children. Analysis of the relationship between peak expiratory flow rate and spirometer forced expiratory parameters PEF may underestimate the degree of airflow limitation, especially when airflow limitation and gas limitation are exacerbated. Because the PEF values measured by different peak speeds are different, the range of the predicted values is too large, and therefore, the PEF values measured by patients have no comparative significance. Along with the continuous breakthrough of sensor technology, the emergence of high-sensitivity airflow sensors is applied to medical fields more and more widely, and the preliminary screening of diseases of a respiratory system is urgently needed by a novel portable respiratory function real-time detection device in the market at present.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the handheld breath flow rate real-time detection curve screen display device which is portable, light, convenient and quick and has accurate detection data.

In order to solve the technical problems, the invention adopts the following technical scheme: hand-held type expiratory flow velocity real-time detection curve screen display device, including detecting the shell, it is equipped with the handle shell to detect shell lower part an organic whole, it is all uncovered to detect shell front side and rear side, it can dismantle to be connected with disposable breathing filter to detect the shell front side, disposable silica gel mouthpiece is installed to disposable breathing filter front end, be provided with respiratory flow velocity sensor in the detection shell, be equipped with singlechip and rechargeable battery in the handle shell, rechargeable battery is located the singlechip below, rechargeable battery passes through the wire and is connected with the singlechip, it is equipped with the display to detect shell top level, the singlechip passes through the signal line and is connected with display and respiratory flow velocity sensor respectively.

The rear port of the detection shell is connected with an air guide horn cover.

The display is provided with a power key, a storage key, an up-turning key and a down-turning key.

Disposable respiratory filter includes preceding back penetrating body, is equipped with the filter pulp in the body, and the body rear end stretches into in grafting or threaded connection detects the front end mouth of shell, and the body excircle is equipped with the spacing ring.

The disposable silicone mouthpiece rear port is sleeved on the excircle of the front port of the tube body.

Adopt above-mentioned technical scheme, when detecting, the person of detection holds the handle shell, presses the power key, breathes velocity of flow sensor, singlechip and display circular telegram, is breathed person's mouth and is breathed out in the shell through disposable silica gel mouthpiece, and gas is earlier through the filtration of disposable breathing filter to the air current, and expiration velocity of flow sensor tests the speed to the air current, and the air current of exhalation is discharged through wind-guiding loudspeaker cover at last. The expiratory flow velocity sensor collects gas flow velocity signals, the signals are transmitted to the single chip microcomputer, the single chip microcomputer processes and operates the signals, the size of instantaneous expiratory flow velocity is visually displayed through the display, each expiration is divided into 20 instantaneous nodes (under the condition of 1s of expiratory time), and meanwhile, the instantaneous expiratory flow velocity signals are compared with the volume time curves of different types of ventilation dysfunction, so that the expiratory flow velocity signals are very intuitive and can be displayed in the early change of respiratory function and the change of the difference of expiratory periods. The comparison result is vivid and easy to understand. Can be used as a practical tool suitable for clinical student learning, physical examination, primary screening of lung diseases and observation of curative effect. The screen display contrast device for displaying the expiratory flow rate in real time in clinic has the characteristics of no wound, simplicity, convenience, rapidness, accuracy, low cost, quick response and the like, can visually reflect an internal state of a respiratory system, quantitatively evaluates the respiratory function of a patient, forms the change trend of real-time monitoring and dynamic observation of the respiratory system function, fully exerts the application in clinic, is not only used in hospitals, but also can be used for detecting the pulmonary function in real time at home.

The tube body, the detection shell and the air guide loudspeaker cover of the disposable breathing filter are through from front to back and are positioned on the same straight line, the exhaled air flow is smooth, and the detection accuracy is improved. The filter cotton only adsorbs infectious viruses and cannot generate unique barrier to airflow.

By viewing the expiratory airflow profile on the display, the data can be stored by pressing the store key, and then the test can be repeated, with the stored data being referred to by the flip up and flip down keys.

The disposable breathing filter is convenient to take down and install from the detection shell, and the disposable silica gel mouthpiece is also convenient to take down and install from the tube body, so that each person can use the disposable breathing filter once during detection, and the disposable breathing filter is safe and sanitary. The limiting ring on the tube body limits the length of the disposable silicon rubber mouthpiece at the front end of the tube body in the entrance.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a top view of FIG. 1;

fig. 3 is a schematic view of the internal structure of fig. 1.

Detailed Description

As shown in fig. 1-3, the handheld breath flow rate real-time detection curve screen display device comprises a detection shell 1, a handle shell 2 is integrally arranged at the lower part of the detection shell 1, the front side and the rear side of the detection shell 1 are both open, a disposable breath filter is detachably connected at the front side of the detection shell 1, a disposable silica gel mouthpiece 3 is arranged at the front port of the disposable breath filter, a breath flow rate sensor 4 is arranged in the detection shell 1, a single chip microcomputer 5 and a rechargeable battery 6 are arranged in the handle shell 2, the rechargeable battery 6 is positioned below the single chip microcomputer 5, the rechargeable battery 6 is connected with the single chip microcomputer 5 through a lead, a display 7 is horizontally arranged at the top of the detection shell 1, and the single chip microcomputer 5 is respectively connected with the display 7 and the breath flow rate sensor 4 through.

The rear port of the detection shell 1 is connected with an air guide horn cover 8.

The display 7 is provided with a power key 9, a storage key 10, a flip-up key 11 and a flip-down key 12.

Disposable respiratory filter includes preceding back penetrating body 13, is equipped with filter pulp 14 in the body 13, and body 13 rear end stretches into grafting or threaded connection in the front end mouth that detects shell 1, and body 13 excircle is equipped with spacing ring 15.

The rear port of the disposable silica gel mouthpiece 3 is sleeved on the excircle of the front port of the tube body 13.

When detecting, the handheld handle shell 2 of detection person presses down power key 9, breathes velocity of flow sensor 4, singlechip 5 and 7 circular telegrams of display, is breathed the mouth of person detected and is breathed out in 3 to detecting shell 1 through disposable silica gel mouthpiece, and gas is earlier through the filtration of disposable breathing filter to the air current, and expiration velocity of flow sensor tests the speed to the air current, and the air current of exhalation is discharged through wind-guiding loudspeaker cover 8 at last. The expiratory flow velocity sensor collects gas flow velocity signals, the signals are transmitted to the single chip microcomputer 5, the single chip microcomputer 5 processes and calculates the signals, the size of instantaneous expiratory flow velocity is visually displayed through the display 7, each expiration is divided into 20 instantaneous nodes (under the condition of 1s of expiratory time), and meanwhile, the instantaneous node is compared with the volume time curves of different types of ventilation dysfunction, so that the expiratory flow velocity sensor is very intuitive, and the early change of respiratory function and the change of the difference of expiratory periods can be displayed. The comparison result is vivid and easy to understand. Can be used as a practical tool suitable for clinical student learning, physical examination, primary screening of lung diseases and observation of curative effect. The device has the characteristics of small volume, no wound, simplicity, convenience, quickness, low cost and the like, can repeatedly measure for many times, and not only can be used in hospitals, but also can be used in families for detecting the lung function in real time.

The tube body 13, the detection shell 1 and the air guide loudspeaker cover 8 of the disposable breathing filter are transparent from front to back and are positioned on the same straight line, the exhaled air flow is smooth, and the detection accuracy is improved. The filter cotton 14 only adsorbs infectious viruses and does not create a separate barrier to airflow.

By viewing the expiratory airflow profile on the display 7, the data can be stored by pressing the memory key 10 and then repeating the test, with the stored data being referred to by the flip up key 11 and the flip down key 12.

The disposable breathing filter is convenient to take down and install from the detection shell 1, and the disposable silica gel mouthpiece 3 is also convenient to take down and install from the tube body 13, so that the disposable breathing filter is used by each person once during detection, and is safe and sanitary. The stop ring 15 on the tube 13 serves to limit the length of the entrance of the disposable silicone mouthpiece 3 at the front end of the tube 13.

The model STM32f103RBT6 processor of ST company is used as the main controller of the singlechip 5, the expiratory flow velocity data of a patient is acquired and obtained through the high-precision respiratory flow velocity sensor 4, the response time can reach 50ms, after the airflow data is stored in a chip storage area, the latest data in the storage area is read and converted at regular time through a program, so that 20 instantaneous flow values can be displayed on a display screen every second for measurement, and the flow velocity change curve is displayed in real time by using a curve graph.

The foregoing embodiments illustrate the principles and features of the present invention, but the foregoing is merely illustrative of preferred embodiments of the present invention and is not to be construed as limiting thereof. In the light of this patent, those skilled in the art can make various changes and modifications without departing from the spirit of the invention and the scope of the appended claims. Therefore, the patent and protection scope of the present invention should be subject to the appended claims.

Claims (5)

1. Hand-held type expiratory flow velocity real-time detection curve screen display device, its characterized in that: including detecting the shell, it is equipped with the handle shell to detect shell lower part an organic whole, it is all uncovered to detect shell front side and rear side, it can dismantle to be connected with disposable breathing filter to detect the shell front side, disposable silica gel is difficult to articulate is installed to disposable breathing filter front end, it breathes flow velocity sensor to be provided with in the shell to detect, be equipped with singlechip and rechargeable battery in the handle shell, rechargeable battery is located the singlechip below, rechargeable battery passes through the wire and is connected with the singlechip, it is equipped with the display to detect shell top level, the singlechip passes through the signal line and is connected with display and breathing flow velocity sensor respectively.

2. The handheld breath flow rate real-time detection curve screen display device according to claim 1, wherein: the rear port of the detection shell is connected with an air guide horn cover.

3. The handheld breath flow rate real-time detection curve screen display device according to claim 1, wherein: the display is provided with a power key, a storage key, an up-turning key and a down-turning key.

4. The handheld breath flow rate real-time detection curve screen display device according to claim 1, wherein: disposable respiratory filter includes preceding back penetrating body, is equipped with the filter pulp in the body, and the body rear end stretches into in grafting or threaded connection detects the front end mouth of shell, and the body excircle is equipped with the spacing ring.

5. The handheld breath flow rate real-time detection curve screen display device according to claim 4, wherein: the disposable silicone mouthpiece rear port is sleeved on the excircle of the front port of the tube body.

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