Pulse oscillation instrument for lung function detection

Abstract

The utility model discloses a pulse oscillation instrument for lung function detection. The pulse oscillation instrument comprises a machine body and a pulse oscillation structure installed on one side of the machine body. The pulse oscillation structure comprises an airflow valve, a pulse oscillation unit, a pressure and flow synchronous testing unit and a breathing nozzle. An air channel is formed in the airflow valve, a pulse input connector is arranged on the top of the airflow valve, a breathing connector is arranged on the opposite outer side of the airflow valve, a pressure adjusting opening is formed in the opposite inner side of the airflow valve, and the pulse input connector, the breathing connector and the pressure adjusting opening are communicated with the air channel. The pulse oscillation unit is mounted on the pulse input interface and can superpose pulse oscillation into the air passage; the pressure and flow synchronous testing unit is installed on the breathing connector, the breathing nozzle is installed on the pressure and flow synchronous testing unit, and the breathing nozzle is communicated with the breathing connector through the pressure and flow synchronous testing unit. The utility model has the advantages of compact structure, simple operation and no expensive price.

Description

Technical Field

[0001] This utility model relates to the technical field of lung function testing equipment, and in particular to a pulse oscillation instrument for lung function testing. Background Technology

[0002] Pulmonary function tests are one of the necessary examinations for respiratory diseases. Pulse oscillation is one of the non-invasive, non-force-dependent tests in pulmonary function tests that measures the mechanical properties of the respiratory system, such as airway resistance. Its testing principle is based on forced oscillation technology, which involves applying an external oscillation wave (pressure signal) to the respiratory system during natural, calm breathing and measuring the corresponding flow rate change produced by the respiratory system under the oscillation pressure signal. The ratio of oscillation pressure to flow rate is the respiratory system impedance.

[0003] Currently, when performing pulmonary function tests on patients, they first need to sit in a standard sitting posture, use a nose clip to clamp their nose, and place their mouth on the mouthpiece at the end of the airway on the testing device. Then, following the doctor's instructions, they need to inhale and exhale at different times and frequencies. During this process, patients need to accurately cooperate with the doctor's instructions to complete multiple pulmonary function tests in sequence. However, for the pulse oximetry test, only calm breathing is required. This test does not require forceful or shallow, rapid breathing, so it is suitable for a wide range of people, especially those who cannot complete traditional pulmonary function tests such as spirometry, such as the elderly, children, and critically ill patients. Furthermore, it provides a wealth of respiratory physiological indicators (viscous resistance, elastic resistance, and inertial resistance) to provide a deeper understanding of functional changes in respiratory diseases, showing promising application prospects.

[0004] Current pulmonary function tests are mainly conducted using large, specialized pulmonary function testing equipment. There is no independent pulse oximetry testing instrument. Although large, specialized pulmonary function testing equipment can test multiple functions, it is expensive for users who only need pulse oximetry testing. Utility Model Content

[0005] The purpose of this invention is to provide a pulse oscillation instrument for lung function testing.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pulse oscillation instrument for pulmonary function testing includes a body and a pulse oscillation structure mounted on one side of the body. The pulse oscillation structure includes an airflow valve, a pulse oscillation unit, a pressure-flow synchronization testing unit, and a breathing nozzle. The airflow valve has an airway formed therein, a pulse input interface at its top, a breathing interface on its outer side, and a pressure regulating port on its inner side. The pulse input interface, the breathing interface, and the pressure regulating port are connected to the airway. The pulse oscillation unit is mounted on the pulse input interface and can superimpose pulse oscillations into the airway. The pressure-flow synchronization testing unit is mounted on the breathing interface, and the breathing nozzle is mounted on the pressure-flow synchronization testing unit, with the breathing nozzle connected to the breathing interface through the pressure-flow synchronization testing unit.

[0008] As a further technical solution of this utility model: the pulse oscillation unit includes a support base inserted into the pulse input interface, a protective shell detachably installed on the support base, and a pulse pressure source disposed inside the protective shell. The support base and the protective shell form a channel communicating with the pulse input interface, so that the pulse pressure source can superimpose pulse oscillation into the airway through the channel.

[0009] As a further technical solution of this utility model: the pulse oscillation unit uses a horn, a motor or high-pressure gas as the pulse pressure source.

[0010] As a further technical solution of this utility model: a processor and a display are installed on the body.

[0011] As a further technical solution of this utility model: a data transmission unit is provided inside the protective shell.

[0012] As a further technical solution of this utility model: the protective shell is provided with a control unit for controlling the opening and closing of the circuit and driving the pulse pressure source.

[0013] As a further technical solution of this utility model: the pulse oscillation structure includes a pressure regulating cover, which is configurable to be installed on the pressure regulating port.

[0014] As a further technical solution of this utility model: the pressure regulating cover has a bottom cover installed on the inner side of the airflow valve and a top cover that is hinged to the bottom cover and can be opened and closed relative to the bottom cover. The top cover is provided with a filter membrane corresponding to the pressure regulating port.

[0015] As a further technical solution of this utility model: the machine body is provided with a mounting arm for fixing the airflow valve on one side.

[0016] Compared with the prior art, the beneficial effects of this utility model are: This utility model proposes a pulse oscillation instrument for lung function testing. Through the cooperation between the airflow valve, pulse oscillation unit, pressure and flow synchronization testing unit, breathing nozzle and air pressure regulating cover of the pulse oscillation structure, the structure is compact, the operation is simple, and there is no need for an expensive price. When the pulse pressure source is turned on, it can realize the pulse oscillation test of lung function testing, and when the pulse pressure source is not turned on, it can be converted into the traditional lung function test. Attached Figure Description

[0017] Figure 1 A first-view schematic diagram of the pulse oscillation structure of a pulse oscillation instrument used for lung function testing.

[0018] Figure 2 A second-view schematic diagram of the pulse oscillation structure of a pulse oscillation instrument used for lung function testing.

[0019] Figure 3 A cross-sectional view of the pulse oscillation structure of a pulse oscillation instrument used for lung function testing. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of protection of this utility model.

[0021] Please see Figures 1-3 A pulse oscillation instrument for lung function testing includes a body (not shown), a processor (not shown) and a display (not shown) mounted on the body, and a pulse oscillation structure 10 mounted on one side of the body. The pulse oscillation structure 10 includes an airflow valve 11, a pulse oscillation unit 12, a pressure-flow synchronization testing unit 13, a breathing nozzle 14, and a pressure regulating cover 15. The airflow valve 11 has an airway 111 formed therein, a pulse input interface 112 at its top, a breathing interface 113 on its outer side, and a pressure regulating port 114 on its inner side. The pulse input interface 112, the breathing interface 113, and the pressure regulating port 114... 4. It is connected to the airway 111; the pulse oscillation unit 12 is detachably installed on the pulse input interface 112 and can superimpose pulse oscillations into the airway 111; the pressure and flow synchronization test unit 13 is detachably installed on the breathing interface 113, and the breathing mouth 14 is detachably installed on the pressure and flow synchronization test unit 13. The breathing mouth 14 is connected to the breathing interface 113 through the pressure and flow synchronization test unit 13. When breathing with the breathing mouth 14 in mouth, the breathing system generates a corresponding flow change as the pulse oscillations are superimposed; the air pressure regulating cover 15 is closable and installed on the pressure regulating port 114 to adjust the air pressure in the airway 111.

[0022] Furthermore, in this embodiment, the pulse oscillation unit 12 includes a support base 121 inserted into the pulse input interface 112, a protective shell 122 detachably installed on the support base 121, and a pulse pressure source 123 disposed within the protective shell 122. The support base 121 and the protective shell 122 form a channel 101 communicating with the pulse input interface 112, allowing the pulse pressure source 123 to superimpose pulse oscillations into the air passage 111 through the channel 101.

[0023] Furthermore, the protective shell 122 is equipped with a data transmission unit, which is electrically connected to the pressure and flow synchronization test unit 13 and the processor. After the pressure and flow synchronization test unit 13 tests the flow and pressure signals after superimposed pressure pulse signals, the data transmission unit uploads the pressure and flow signals to the processing software, PC or APP through data communication. The processor processes and analyzes the flow and pressure signals, and through spectrum analysis, obtains a continuous signal of 4-40HZ, and converts it into the corresponding human airway resistance lung function.

[0024] Furthermore, the protective shell 122 is equipped with a control unit for controlling the opening and closing of the circuit and the driving of the pulse pressure source 123.

[0025] Furthermore, the pulse oscillation unit 12 includes, but is not limited to, using a horn, a motor, or high-pressure gas as the pulse pressure source 123; in this embodiment, the pulse pressure source 123 is a horn. The pressure pulse signal is used to generate a test signal, which can be a single sine wave, a composite sine wave, or a triangular / rectangular pulse wave. The test signal is superimposed on the human respiratory tidal waveform to generate a corresponding flow signal.

[0026] Furthermore, in this embodiment, the pressure regulating cover 15 is formed with a bottom cover 151 installed on the inner side of the airflow valve 11 and a top cover 152 hinged to the bottom cover 151 and capable of opening and closing relative to the bottom cover 151. The top cover 152 is provided with a filter membrane 153 corresponding to the pressure regulating port 114. When the top cover 152 is closed relative to the bottom cover 151, the filter membrane 153 seals the pressure regulating port 114, thereby increasing the required air pressure when the air passage 111 is ventilated to the outside, thus meeting the needs of different users.

[0027] Furthermore, in this embodiment, the machine body is provided with a mounting arm 21 on one side for fixing the airflow valve 11.

[0028] Understandably, the method of using the pulse oscillation instrument for pulmonary function testing according to this utility model is as follows: When the pulse pressure source 123 is turned on and pulse oscillations are superimposed into the airway 111, the pulse oscillation test item for pulmonary function testing can be realized; when the pulse pressure source 123 is not turned on, it can be converted into a traditional pulmonary function test. Thus, while not only supporting airway 111 resistance testing in tidal breathing mode, it innovatively adds pulse oscillation airway 111 resistance testing in forced ventilation mode / maximum ventilation mode.

[0029] In summary, the pulse oscillation instrument for lung function testing of this utility model has a compact structure and simple operation through the cooperation between the airflow valve 11, pulse oscillation unit 12, pressure and flow synchronization testing unit 13, breathing nozzle 14 and air pressure regulating cover 15 of the pulse oscillation structure 10. It does not require an expensive price. When the pulse pressure source 123 is turned on, it can realize the pulse oscillation test of lung function testing. When the pulse pressure source 123 is not turned on, it can be converted into the traditional lung function test.

[0030] Any combination of different embodiments of this utility model, provided it does not violate the inventive concept of this utility model, shall be considered as the disclosure of this utility model; any simple modifications to the technical solution and any combination of different embodiments within the scope of the inventive concept of this utility model, without violating the inventive concept of this utility model, shall be within the protection scope of this utility model.

Claims

1. A pulse oscillation instrument for lung function testing, characterized in that: The device includes a body and a pulse oscillation structure (10) mounted on one side of the body; the pulse oscillation structure (10) includes an airflow valve (11), a pulse oscillation unit (12), a pressure and flow synchronization testing unit (13), and a breathing nozzle (14); the airflow valve (11) has an airway (111) formed therein, a pulse input interface (112) at its top, a breathing interface (113) on its outer side, and a pressure regulating port (114) on its inner side; the pulse input interface (112) The breathing interface (113) and the pressure regulating port (114) are connected to the airway (111); the pulse oscillation unit (12) is installed on the pulse input interface (112) and can superimpose pulse oscillation into the airway (111); the pressure and flow synchronization test unit (13) is installed on the breathing interface (113), the breathing nozzle (14) is installed on the pressure and flow synchronization test unit (13), and the breathing nozzle (14) is connected to the breathing interface (113) through the pressure and flow synchronization test unit (13).

2. The pulse oscillation instrument for pulmonary function testing according to claim 1, characterized in that: The pulse oscillation unit (12) includes a support base (121) inserted into the pulse input interface (112), a protective shell (122) detachably installed on the support base (121), and a pulse pressure source (123) disposed in the protective shell (122). The support base (121) and the protective shell (122) form a channel (101) communicating with the pulse input interface (112), so that the pulse pressure source (123) can superimpose pulse oscillation into the airway (111) through the channel (101).

3. The pulse oscillation instrument for lung function testing according to claim 2, characterized in that: The pulse oscillation unit (12) uses a horn, a motor or high-pressure gas as a pulse pressure source (123).

4. The pulse oscillation instrument for lung function testing according to claim 1, characterized in that: The machine body is equipped with a processor and a display.

5. The pulse oscillation instrument for pulmonary function testing according to claim 2, characterized in that: The protective shell (122) is equipped with a data transmission unit.

6. The pulse oscillation instrument for pulmonary function testing according to claim 2, characterized in that: The protective shell (122) is equipped with a control unit for controlling the opening and closing of the circuit and driving the pulse pressure source (123).

7. The pulse oscillation instrument for pulmonary function testing according to claim 1, characterized in that: The pulse oscillation structure (10) includes a pressure regulating cover (15), which is installed on the pressure regulating port (114) in a way that can be opened and closed.

8. The pulse oscillation instrument for pulmonary function testing according to claim 7, characterized in that: The pressure regulating cover (15) has a bottom cover (151) installed on the inner side of the airflow valve (11) and a top cover (152) hinged to the bottom cover (151) and capable of opening and closing relative to the bottom cover (151). The top cover (152) is provided with a filter membrane (153) corresponding to the pressure regulating port (114).

9. The pulse oscillation instrument for pulmonary function testing according to claim 1, characterized in that: The body has a mounting arm (21) on one side for fixing the airflow valve (11).

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