Pulse oscillation test device integrated with lung ventilation test

Abstract

The embodiment of the application belongs to the technical field of medical instruments, and relates to a pulse oscillation test device integrated with lung ventilation test, which comprises a breathing parameter measurement assembly, an oscillation wave generator, an airway assembly, a driving mechanism and an air resistance piece. The airway assembly defines a breathing channel, a first port of the breathing channel is connected with the breathing parameter measurement assembly, and a second port of the breathing channel is in communication with air. The oscillation wave generator is used for sending oscillation waves to the breathing channel. The driving mechanism is used for driving to change the configuration state of the air resistance piece in the breathing channel. When the pulse oscillation test is performed, the air resistance piece is arranged in the breathing channel to block the airflow entering and exiting the breathing channel through the second port. When the lung ventilation test is performed, the air resistance piece is arranged outside the breathing channel. The technical scheme provided by the application can realize lung ventilation and pulse oscillation test, and can realize automatic switching of the two functional air path systems.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more specifically, to a pulse oscillation testing device that integrates lung ventilation testing. Background Technology

[0002] Lung function tests are an important means of assessing respiratory health, with lung ventilation tests and impulse oscillation tests being two common methods.

[0003] Lung ventilation testing is one of the most common pulmonary function tests, primarily assessing lung ventilation function by measuring the volume and flow rate of inhaled and exhaled air. Impulse oscillometric (IOS) testing is a method for measuring respiratory resistance based on forced oscillation (FOT) technology. It applies an oscillatory wave (pressure signal) to the respiratory system during natural, quiet breathing and measures and analyzes the corresponding flow rate changes under this oscillatory pressure signal, thereby obtaining information about airway resistance, elasticity, and lung tissue viscosity. The main advantages of FOT are its simplicity, non-invasiveness, and speed; it does not require complex breathing movements from the patient, making it particularly suitable for children, the elderly, or patients unable to cooperate in performing complex breathing tasks.

[0004] Because IOS testing also involves measuring the respiratory flow of the subject, some impulse oscillation (IOS) testing systems can integrate lung ventilation functionality. The airway environment for IOS testing differs from that for lung ventilation testing, therefore, the airway direction needs to be switched when performing different tests. However, existing IOS testing systems with lung ventilation functionality cannot achieve automatic switching, requiring manual operation, which is inconvenient to use. Summary of the Invention

[0005] The technical problem to be solved by the embodiments of this application is to integrate lung ventilation and pulse oscillation tests, and to realize automatic switching between the two test functions.

[0006] Therefore, this application proposes a pulse oscillation testing device for integrated lung ventilation testing, comprising:

[0007] Respiratory parameter measurement components, oscillating wave generator, airway components, drive mechanism, and air resistance components;

[0008] The airway assembly defines a breathing channel, a first port of which is connected to the breathing parameter measuring assembly, and a second port of which is in communication with the air.

[0009] The oscillation wave generator is used to send oscillation waves to the breathing channel;

[0010] The drive mechanism is used to change the configuration of the air resistance element in the breathing channel;

[0011] During the pulse oscillation test, the air resistance element is positioned within the breathing channel to block the airflow entering and exiting the breathing channel through the second port; during the lung ventilation test, the air resistance element is positioned outside the breathing channel.

[0012] In some possible implementations, the drive mechanism is connected to the pneumatic resistor in a transmission manner;

[0013] During the pulse oscillation test, the air resistance element is driven to move to the second port of the breathing channel;

[0014] During lung ventilation testing, the air resistance element is driven to be removed from the second port of the breathing channel.

[0015] In some possible implementations, the airway assembly may include a directional valve, which may include a valve core and a valve sleeve. The valve core has a first channel and a second channel. The air resistance element is fixed on the second channel. The drive mechanism is kinetically connected to the valve core. The second port of the breathing channel is disposed on the valve sleeve.

[0016] During a lung ventilation test, the valve core is driven to a position where the first channel connects to the second port of the breathing channel;

[0017] During the pulse oscillation test, the valve core is driven to move to the position where the second channel connects with the second port of the breathing channel.

[0018] In some possible implementations, the drive mechanism may include a coupling and a motor, the valve core having a radially extending ridge on its end face facing the coupling, and the coupling having a groove on its end face facing the valve core that mates with the ridge, the coupling transmitting power from the motor through the engagement of the groove and the ridge.

[0019] In some possible implementations, the breathing channel has a fixed section channel and an adjustable section channel. The second port of the breathing channel may include a ventilation port and an impedance port. The air resistance element is disposed on the impedance port. One end of the adjustable section channel is connected to the fixed section channel. The drive mechanism is used to drive and change the connection state of the adjustable section channel so that the other end of the adjustable section channel is selectively connected to the ventilation port or the impedance port.

[0020] In some possible implementations, the airway assembly may include a directional valve, which may include a valve core and a valve sleeve, the adjustable section of the passage being formed inside the valve core, and both the air inlet and the impedance port being disposed on the valve sleeve.

[0021] In some possible implementations, the airway assembly may include an outer tube and an inner tube, the inner tube forming the breathing passage, the inner tube being detachably and rotationally fitted into the outer tube.

[0022] In some possible implementations, the airway assembly may include a first locking sleeve detachably fitted onto the outer tube body, the inner wall of the first locking sleeve having a first abutment portion, and the inner tube body having a first stop portion extending out of the outer tube body, the first abutment portion being used to abut against the first stop portion to prevent the inner tube body from dislodging from the outer tube body.

[0023] In some possible implementations, the first locking sleeve is rotatably connected to the outer tube body. When the first locking sleeve is rotated to the locked position, the first abutment part abuts against the first stop part to prevent the inner tube body from coming out of the outer tube body. When the first locking sleeve is rotated to the unlocked position, the first abutment part and the first stop part are misaligned to allow the inner tube body to come out of the outer tube body.

[0024] In some possible implementations, the airway assembly may include a steering valve that is detachably connected to the outer tube body.

[0025] In some possible implementations, the airway assembly may include a second locking sleeve detachably fitted onto the outer tube body, the inner wall of the second locking sleeve having a second abutment portion, the diverting valve being disposed within the outer tube body and having a second stop portion extending out of the outer tube body, the second abutment portion being used to abut against the second stop portion to prevent the diverting valve from dislodging from the outer tube body.

[0026] In some possible implementations, the second locking sleeve is rotatably connected to the outer tube body. When the second locking sleeve is rotated to the locked position, the second abutment part abuts against the second stop part to prevent the steering valve from dislodging from the outer tube body. When the second locking sleeve is rotated to the unlocked position, the second abutment part and the second stop part are misaligned to allow the steering valve to dislodge from the outer tube body.

[0027] In some possible implementations, the drive mechanism may also include a photoelectric switch disposed on the outer tube for detecting the disassembly or assembly status of the steering valve.

[0028] In some possible implementations, the pulse oscillation test device may also include a controller for performing the following steps:

[0029] Determine the disassembly / reassembly status of the steering valve;

[0030] When the steering valve is in the removed state, stop executing control commands for the steering valve.

[0031] Compared with the prior art, the embodiments of this application have the following main advantages:

[0032] In this embodiment, the pulse oscillation testing device integrating lung ventilation testing includes a respiratory parameter measurement component, an oscillation wave generator, an airway component, a drive mechanism, and an air resistance element. The drive mechanism can switch the configuration state of the air resistance element within the respiratory channel defined by the airway component. During pulse oscillation testing, the air resistance element is automatically set to block airflow in the respiratory channel; during lung ventilation testing, the air resistance element is positioned outside the respiratory channel and does not block airflow at the second port. Therefore, compared to existing pulse oscillation testing systems with lung ventilation function, the pulse oscillation testing device integrating lung ventilation testing in this embodiment can achieve automatic switching between the two functions, improving practicality and convenience. Attached Figure Description

[0033] To more clearly illustrate the solution of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the airway structure of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown;

[0035] Figure 2 A schematic diagram of a specific embodiment of the airway structure of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown;

[0036] Figure 3 A schematic diagram of another specific embodiment of the airway structure of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown;

[0037] Figure 4 A schematic diagram of another specific embodiment of the airway structure of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown;

[0038] Figure 5 A schematic diagram of a specific embodiment of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown;

[0039] Figure 6 This paper shows a structural cross-sectional schematic diagram of a specific embodiment of the pulse oscillation testing device for integrating lung ventilation testing according to this application;

[0040] Figure 7 An exploded view of a specific embodiment of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown;

[0041] Figure 8 A schematic diagram of the connection structure of an outer tube and an inner tube according to a specific embodiment is shown;

[0042] Figure 9 A cross-sectional view of the connection structure of an outer tube and an inner tube is shown in a specific embodiment.

[0043] Figure 10 A schematic diagram of a specific embodiment of a steering valve is shown;

[0044] Figure 11 A schematic diagram of a specific embodiment of the connection structure between the steering valve and the outer pipe body is shown;

[0045] Figure 12 A schematic diagram of a specific embodiment of the valve core and coupling connection structure is shown. Detailed Implementation

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0047] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0049] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0050] Specific reference Figure 1 , Figure 1 A schematic diagram of the airway structure of the pulse oscillation testing device for integrated lung ventilation testing according to this application is shown. The pulse oscillation testing device for integrated lung ventilation testing includes:

[0051] Respiratory parameter measurement component 1, oscillation wave generator 2, airway component 3, drive mechanism (not shown) and air resistance component 4;

[0052] The airway assembly 3 defines a breathing channel 31, the first port of which is connected to the breathing parameter measuring assembly 1, and the second port of which is in communication with the air.

[0053] The oscillation wave generator 2 is used to send oscillation waves to the breathing channel 31;

[0054] The drive mechanism is used to drive and change the configuration of the air resistance element 4 in the breathing channel 31;

[0055] During the pulse oscillation test, the air resistance element 4 is positioned within the breathing channel 31 to block the airflow entering and exiting the breathing channel 31 through the second port; during the lung ventilation test, the air resistance element 4 is positioned outside the breathing channel 31.

[0056] In this embodiment, the respiratory parameter measurement component 1 mainly includes a respiratory flow sensor and a pressure sensor. The respiratory flow sensor is used to detect the subject's respiratory flow rate and can be a screen-type differential pressure flow sensor or an ultrasonic flow sensor. The pressure sensor is mainly used to detect the subject's oral pressure and can be a digital pressure sensor. One end of the respiratory flow sensor can be connected to a disposable mouthpiece, and the other end is sealed to the breathing channel 31. The data detected by the respiratory parameter measurement component 1 can be uploaded to a host computer or other computer for data acquisition.

[0057] The airway assembly 3 is a tubular component that defines a breathing channel 31. Specifically, this breathing channel 31 refers to a single non-sensor sampling port (exhalation port) and an inhalation port during either inhalation or exhalation. The first port of the breathing channel 31 is connected to a respiratory flow sensor, while the second port is open to the air. During lung ventilation or pulse oscillation tests, the subject's inspiratory airflow enters through the second port, flows through the breathing channel 31, exits through the first port, and passes through the respiratory flow sensor into the subject's mouth. The subject's expiratory airflow enters through a disposable mouthpiece and the respiratory flow sensor through the first port of the breathing channel 31, flows through the breathing channel 31, exits through the second port, passes through a diverting valve, and is exhaled into the air. During lung ventilation tests, the breathing channel 31 must be free of air resistance; however, during pulse oscillation tests, a fixed air resistance device must be added to the breathing channel 31.

[0058] The oscillating wave generator 2, under control, can generate an oscillating sound wave signal at a set frequency. The oscillating wave generator 2 can be a device such as a loudspeaker, blower, or linear oscillator. The driving signal for the oscillating wave generator 2 can be a periodic electrical signal such as a square wave, sine wave, triangle wave, or sawtooth wave, and the frequency and amplitude of this driving signal can be adjusted as needed. The oscillating wave generator 2 can be installed on the breathing channel 31 and is in a sealed connection with the breathing channel 31.

[0059] Specifically, the breathing channel 31 may have a notch on its side facing the oscillation wave generator 2, so that the oscillation sound wave signal from the oscillation wave generator 2 can enter the breathing channel 31 through the notch. When the subject performs the pulse oscillation test, the oscillation sound wave signal can enter the subject's respiratory system with the inspiratory airflow as the subject inhales.

[0060] The air resistance element 4 is an air resistance structure, which can be a woven nylon or stainless steel wire mesh, used as an airflow attenuation element within the breathing channel 31. It provides a fixed air resistance value during pulse oscillation testing. The air resistance element 4 has two configuration states within the expiratory channel: it is positioned within the channel at the second port of the breathing channel 31, in which case the airflow entering and exiting the second port flows through the air resistance element 4, thus obstructing the airflow through the breathing channel 31; and it is positioned outside the breathing channel 31, where it does not obstruct airflow.

[0061] The drive mechanism can be a DC motor, which provides power and can drive to change the direction of the breathing channel 31 or drive to change the position of the air resistance element 4 on the device, so as to change the relative position of the air resistance element 4 with respect to the breathing channel 31.

[0062] like Figure 1The diagrams of the airways in states 1 and 2 shown in the figure illustrate that during pulse oscillation, the drive mechanism can automatically set the breathing airway or air resistance element 4 according to the control command issued, so that the air resistance element 4 is set in the breathing channel 31; while during lung ventilation testing, the test automatically sets the breathing airway or air resistance element 4 according to the control command issued, and removes the air resistance element 4 in the breathing channel 31.

[0063] Compared with the prior art, the embodiments of this application have the following main advantages:

[0064] In this embodiment, the pulse oscillation testing device integrating lung ventilation testing includes a respiratory parameter measurement component 1, an oscillation wave generator 2, an airway component 3, a drive mechanism, and an air resistance element 4. The drive mechanism can switch the configuration state of the air resistance element 4 within the breathing channel 31 defined by the airway component 3. During pulse oscillation testing, the air resistance element 4 is automatically set to block the airflow in the breathing channel 31; during lung ventilation testing, the air resistance element 4 is positioned outside the breathing channel 31 without blocking the airflow at the second port. Therefore, compared with existing pulse oscillation testing systems with lung ventilation function, the pulse oscillation testing device integrating lung ventilation testing in this embodiment can achieve automatic switching between the two functions, improving practicality and convenience.

[0065] In some possible implementations, the drive mechanism is connected to the pneumatic resistor 4 in a transmission manner;

[0066] During the pulse oscillation test, the air resistance element 4 is driven to move to the second port of the breathing channel 31;

[0067] During a lung ventilation test, the air resistance element 4 is driven to be removed from the second port of the breathing channel 31.

[0068] In this embodiment, the air resistance element 4 is directly or indirectly connected to the driving mechanism, so that the air resistance element 4 can be driven to move by the driving mechanism. During the pulse oscillation test, it is driven to the second port of the breathing channel 31 to block the airflow. During the lung ventilation test, it is moved away from the second port.

[0069] For details on some possible implementations, please refer to [link / reference]. Figure 2 , Figure 2 A schematic diagram of a specific embodiment of the airway structure of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown.

[0070] In this specific embodiment, reference is made to Figure 2As shown, the airway assembly 3 includes a steering valve 32, which includes a valve core 321 and a valve sleeve 322. The valve core 321 has a first channel 3211 and a second channel 3212. The air resistance element 4 is fixed on the second channel 3212. The drive mechanism is connected to the valve core 321 in a transmission manner. The second port of the breathing channel 31 is disposed on the valve sleeve 322.

[0071] During a lung ventilation test, the valve core 321 is driven to move to a position where the first channel 3211 connects with the second port of the breathing channel 31;

[0072] During the pulse oscillation test, the valve core 321 is driven to move to the position where the second channel 3212 connects with the second port of the breathing channel 31.

[0073] In this embodiment, the valve core 321 is connected to the drive mechanism. The first channel 3211 and the second channel 3212 are two independent air passages defined inside the valve core 321. The two channels have the same length, and the air resistance element 4 is fixed on the second channel 3212. Both the first channel 3211 and the second channel 3212 can be used as part of the breathing channel 31 to connect the other parts of the breathing channel 31 with the second port of the breathing channel 31 provided on the valve sleeve 322.

[0074] The valve sleeve 322 has an internal cavity, within which the valve core 321 is housed and can be driven to move. This movement can be rotational or linear. Furthermore, this movement can have two positions. In the first position, the first channel 3211 of the valve core 321 serves as part of a breathing channel 31, communicating with the second port of the breathing channel 31 on the valve sleeve 322. At this position, there are no gas-blocking devices within the breathing channel 31, and this is used for lung ventilation testing. In the second position, the second channel 3212 of the valve core 321 switches to serve as part of a breathing channel 31, communicating with the second port of the breathing channel 31 on the valve sleeve 322. At this position, the breathing channel 31 contains a gas-blocking element 4, and this is used for pulse oscillation testing.

[0075] For details on some possible implementations, please refer to [link / reference]. Figure 3 , Figure 3 A schematic diagram of another specific embodiment of the airway structure of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown.

[0076] In this specific embodiment, refer to Figure 3As shown, the breathing channel 31 has a fixed section channel and an adjustable section channel. The second port of the breathing channel 31 includes a ventilation port and an impedance port. The air resistance element 4 is disposed on the impedance port. One end of the adjustable section channel is connected to the fixed section channel. The driving mechanism is used to drive and change the connection state of the adjustable section channel so that the other end of the adjustable section channel is selectively connected to the ventilation port or the impedance port.

[0077] In this embodiment, both the ventilation port and the impedance port are connected to air, and an impedance element is provided at the impedance port. The fixed segment channel is used to indicate that the structure of the channel, such as its length and airflow direction, does not change during the switching process between the two functional tests, while the adjustable segment channel can change its length or airflow direction during the switching process.

[0078] In this specific embodiment, such as Figure 3 As shown, the adjustable section channel can also be configured with two channel branches, which are respectively connected to the impedance port and the ventilation port. Specifically, the drive mechanism can be connected to the blocking structure set in the two channel branches, thereby controlling the on / off state of the two channel branches through the blocking structure to adjust the airflow direction of the adjustable section channel.

[0079] For details on some possible implementations, please refer to [link / reference]. Figure 4 , Figure 4 A schematic diagram of another specific embodiment of the airway structure of the pulse oscillation testing device for integrating lung ventilation testing according to this application is shown.

[0080] In this specific embodiment, reference is made to Figure 4 As shown, the airway assembly 3 includes a steering valve 33, which includes a valve core 331 and a valve sleeve 332. The adjustable section channel is formed inside the valve core 331, and the air inlet and the impedance port are both located on the valve sleeve 332.

[0081] In this embodiment, the valve core 331 is designed to be rotatable, with the vent port and the impedance port respectively located at different circumferential positions on the valve sleeve 332. The valve core 331 is connected to the drive mechanism, allowing the drive mechanism to selectively connect with the impedance port and the vent port by rotating the valve core 331 at different angles.

[0082] exist Figure 2 Based on the airway structure and related descriptions shown, the following section, in conjunction with another specific embodiment, further explains the other structures of the pulse oscillation testing device for integrated lung ventilation testing.

[0083] Specific reference Figures 5-12 The diagram shows a structural schematic of another specific embodiment of a pulse oscillation testing device for integrated lung ventilation testing.

[0084] In this specific embodiment, the pulse oscillation test device integrating lung ventilation test may specifically include a respiratory parameter measurement component 1, an oscillation wave generator 2, an airway component 3, a drive mechanism 5, and an air resistance component 4.

[0085] The airway assembly 3 includes an outer tube 34, an inner tube 35, a first locking sleeve 36, a second locking sleeve 37, and a directional valve 32.

[0086] The airway assembly 3 internally defines a breathing channel 31 extending between a first port and a second port. The first port is connected to the respiratory parameter measuring assembly 1, while the second port is in communication with the air. The breathing channel 31 specifically comprises two parts: one part is defined by the inner wall of the inner tube 35, and the other part is defined by the first channel 3211 or the second channel 3212 of the valve core 321 of the diverting valve 32.

[0087] Both the oscillation wave generator 2 and the drive mechanism 5 are mounted on the airway assembly 3 and are located on the side of the breathing channel 31. The oscillation wave generator 2 can be a loudspeaker and has a notch 352 facing the side wall of the breathing channel 31.

[0088] The directional valve 32 has a valve core 321 and a valve sleeve 322. The valve sleeve 322 has a receiving cavity 3221 for accommodating the valve core 321 and a connection port 3222 communicating with the receiving cavity 3221. The connection port 3222 is used to communicate with a breathing passage 31 defined by an inner tube body 35. A second port of the breathing passage 31 is disposed on the valve sleeve 322 and communicates with the receiving cavity 3221. The valve core 321 has a first channel 3211 and a second channel 3212 that radially penetrate the sidewall. The valve core 321 can rotate within the valve sleeve 322, thereby selectively using either the first channel 3211 or the second channel 3212 to connect the breathing passage 31 formed by the inner tube body 35 and the second port on the valve sleeve 322.

[0089] like Figure 10 As shown, the air resistance element 4 includes an impedance mesh 41 and a fixing plate 42. The impedance mesh 41 is fixed to the second channel 3212 of the valve core 321 by the fixing plate 42. The drive mechanism 5 includes a motor 51 and a coupling 52. The electrode drives the valve core 321 to rotate through the coupling 52.

[0090] Further reference Figure 6 , Figure 8 and Figure 9The diagram illustrates the mating structure of the outer tube 34 and the inner tube 35. The airway assembly 3 may include an outer tube 34 and an inner tube 35. Both the outer tube 34 and the inner tube 35 are cylindrical structures. The inner tube 35 is fitted inside the outer tube 34, and its inner wall defines a portion of the breathing channel 31. The top of the inner wall of the outer tube 34 may have a positioning groove 341, and the outer wall of the inner tube 35 protrudes with one or more positioning lugs or bosses 351. When the inner tube 35 is installed inside the outer tube 34, the positioning lugs 351 and the positioning groove 341 engage to prevent relative rotation between the inner tube 35 and the outer tube 34. Therefore, when the breathing channel 31 needs cleaning and disinfection, the inner tube 35 can be removed separately for disinfection.

[0091] Furthermore, the inner tube 35 has a notch 352, and the outer tube 34 has a side channel 344 at the same location on its side. The notch 352 and the side channel 344 face each other, forming a horn opening. The oscillating wave generator 2 can send oscillating air waves to the breathing channel 31 through this horn opening.

[0092] To facilitate the assembly and disassembly of the outer tube 34 and the inner tube 35, a first locking sleeve 36 is provided on the outside of the outer tube 34, which is detachably mounted on the outer tube 34. The inner wall of the first locking sleeve 36 has a first abutment portion, which is an annular protrusion 361 extending circumferentially from the inner wall of the first locking sleeve 36. The inner tube 35 has a first stop portion extending out of the outer tube 34, which can specifically be a positioning lug or boss structure 351 protruding from the outer wall of the inner tube 35. After the inner tube 35 is placed inside the outer tube 34 and the first locking sleeve 36 is installed on the outer tube 34, the annular protrusion 361 and the positioning lug 351 abut against each other, so that the positioning lug 351 is pressed into the positioning groove 341 of the outer tube 34, thereby preventing the inner tube 35 from coming out of the outer tube 34. When it is necessary to remove the inner tube 35 for disinfection, the first locking sleeve 36 can be removed from the outer tube 34 to remove the inner tube 35.

[0093] Furthermore, refer to Figure 8The inner wall of the first locking sleeve 36 has circumferentially extending annular protrusions 361 that are divided into multiple segments. An unlocking groove 362 is formed between two adjacent annular protrusions 361. The dimensions of the unlocking grooves 362, i.e., their depth and width, and the angular arrangement of the intervals between each unlocking groove 362, can all be consistent with the positioning groove 341 on the inner wall of the outer tube 34. Furthermore, the first locking sleeve 36 and the outer tube 34 are rotatably connected. When the first locking sleeve 36 rotates to the locked position, the unlocking groove 362 of the first locking sleeve 36 is misaligned with the positioning groove 341 on the inner wall of the outer tube 34. At this time, the annular protrusions 361 of the first locking sleeve 36 abut against the positioning lug 351 protruding from the outer wall of the inner tube 35, thereby fixing the positioning lug 351 within the positioning groove 341 and preventing the inner tube 35 from dislodging from the outer tube 34. When the first locking sleeve 36 is rotated to the unlocked position, the unlocking groove 362 of the first locking sleeve 36 and the positioning groove 341 on the inner wall of the outer tube 34 are on the same axis, while the annular protrusion 361 of the first locking sleeve 36 is misaligned with the positioning lug 351 protruding from the outer wall of the inner tube 35. At this time, the inner tube 35 is allowed to be dislodged from the outer tube 34. During dislodging, the positioning lug 351 moves axially along the unlocking groove 362. Thus, the inner tube 35 and the outer tube 34 can be disassembled and assembled without removing the first locking sleeve 36.

[0094] Furthermore, the side wall of the first locking sleeve 36 is provided with a circumferentially extending positioning groove 363, and the outer wall of the outer tube 34 is provided with a threaded hole 342. A stepped screw 343 can be installed in the threaded hole 342. The screw can protrude a portion when installed into the threaded hole 342. This protrusion is located in the positioning groove 363, so that the first locking sleeve 36 and the outer tube 34 can be rotatably connected within the range between the two end faces of the positioning groove 363 in the circumferential direction. This allows the first locking sleeve 36 to switch between the locked position and the unlocked position, and the first locking sleeve 36 can be circumferentially fixed on the outer tube 34.

[0095] The actual assembly and disassembly process of the outer tube 34 and inner tube 35 in this specific embodiment is as follows: During installation, the first locking sleeve 36 is first fitted onto the outer tube 34, and the stepped screw 343 is fixed in the threaded hole 342 of the outer tube 34 through the unlocking groove 362. Then, the first locking sleeve 36 is rotated to the unlocked position. At this time, the inner tube 35 is aligned with the unlocking groove 362 and inserted into the outer tube 34. Afterward, the first locking sleeve 36 is rotated to the locked position, thereby completing the assembly of the inner tube 35 and the outer tube 34. The end face of the inner tube 35 protrudes from the end face of the first locking sleeve 36. When disassembly and cleaning are required, the first locking sleeve 36 is first rotated to the unlocked position, and then the inner tube 35 can be removed from the outer tube 34 from the head end face of the first locking sleeve 36.

[0096] Furthermore, the directional valve 32 is detachably connected to the outer tube 34 in a rotation-resistant manner. To facilitate the detachable connection between the directional valve 32 and the outer tube 34, the air passage assembly 3 also includes a second locking sleeve 37, which is detachably fitted onto the outer tube 34. The inner wall of the second locking sleeve 37 has a second abutment portion. The directional valve 32 is disposed within the outer tube 34 and has a second stop portion extending out of the outer tube 34. The second abutment portion abuts against the second stop portion to prevent the directional valve 32 from dislodging from the outer tube 34.

[0097] The outer tube 34, near the second port of the breathing channel 31, has an inner wall with a cavity 345 that matches the shape of the outer shell of the valve core 321 of the steering valve 32. This cavity accommodates the steering valve 32, and after accommodating the steering valve 32, a portion of the valve sleeve 322 near the second port can extend from the cavity 345 to form a second stop. A second locking sleeve 37 is detachably fixed to the outer tube 34 near the second port of the breathing channel 31, and the inner wall of the second locking sleeve 37 has an inwardly protruding protrusion 371, forming a second abutment. After the steering valve 32 is placed inside the outer tube 34 and the second locking sleeve 37 is installed on the outer tube 34, the protrusion 371 of the second locking sleeve 37 can press against and block the portion of the valve sleeve 322 housing of the steering valve 32 from extending out of the receiving cavity 345, thereby fixing the steering valve 32 inside the receiving cavity 345 of the outer tube 34 and preventing it from coming out of the outer tube 34. When it is necessary to remove the steering valve 32 for disinfection, the second locking sleeve 37 can be removed from the outer tube 34, thereby removing the steering valve 32.

[0098] Furthermore, to facilitate the removal of the steering valve 32, a valve cover 3223 can be detachably installed on the second port of the valve sleeve 322. The valve cover 3223 has a central through hole communicating with the second port. When the steering valve 32 is installed inside the outer tube 34, the valve cover 3223 can extend from the second locking sleeve 37, so that the user can remove the steering valve 32 from inside the outer tube 34 through the valve cover 3223.

[0099] Furthermore, the second locking sleeve 37 is rotatably connected to the outer tube 34. The outer tube 34 forms a receiving cavity 345, and the outer shell of the valve sleeve 322 is square in shape. When the steering valve 32 is installed into the receiving cavity 345 of the outer tube 34 and the second locking sleeve 37 is rotated to the locked position, the protrusion 371 formed on the inner wall of the second locking sleeve 37 protrudes from the inner wall of the receiving cavity 345 of the steering valve 32 and presses against the protruding outer shell of the valve sleeve 322, thus preventing the steering valve 32 from dislodging from the outer tube 34. When the second locking sleeve 37 is rotated to the unlocked position, the protrusion 371 formed on the inner wall of the second locking sleeve 37 does not protrude from the inner wall of the receiving cavity 345 of the steering valve 32, and the second abutment and the second stop are misaligned to allow the steering valve 32 to dislodge from the outer tube 34.

[0100] It should be noted that the fixing method of the second locking sleeve 37 and the outer tube 34 is the same as that of the first locking sleeve 36 and the outer tube 34, and the fixing structure used is the same, so it will not be described in detail here.

[0101] Furthermore, the drive mechanism 5 includes a coupling 52 and a motor 51. The end face of the valve core 321 facing the coupling 52 has a radially extending ridge 3213. The end face of the coupling 52 facing the valve core 321 has a groove 521 that mates with the ridge 3213. The coupling 52 transmits the power of the motor 51 through the engagement of the groove 521 and the ridge 3213.

[0102] In this specific embodiment, the drive mechanism 5 also includes a photoelectric switch 54, which is disposed on the outer tube 34 and is used to detect the disassembly and assembly status of the steering valve 32.

[0103] Specifically, the photoelectric switch 54 can be installed on the outer tube 34, and the outer tube 34 is provided with a detection hole 346. The detection hole 346 is directly opposite the receiving cavity 345 of the steering valve 32, so that the photoelectric switch 54 can detect the disassembly and assembly status of the steering valve 32 in the outer tube 34 through the detection hole 346.

[0104] In some possible implementations, the pulse oscillation test device also includes a controller for performing the following steps:

[0105] Determine the disassembly / reassembly status of the steering valve 32;

[0106] When the steering valve 32 is in the disassembled state, the execution of control commands for the steering valve 32 is stopped. In this specific embodiment, after the photoelectric switch 54 detects the disassembled state of the steering valve 32, it can report the state to the controller. If the steering valve 32 has been disassembled, the execution of control commands for the steering valve 32 is stopped. Based on the above description, since the coupling 52 transmits the power of the motor 51 through the cooperation of the groove 521 and the protrusion 3213, due to this cooperation structure, the steering valve 32 can only be removed and installed from the outer tube 34 when the direction of the groove 521 and the protrusion 3213 is consistent with the disassembled / installed direction of the steering valve 32. During the testing process, the coupling 52 and the valve core 321 can be rotated by the controller. To prevent the steering valve 32 from being unable to be reset after the coupling 52 rotates after it is removed, the controller can stop the control command to the steering valve 32 after detecting that the steering valve 32 has been removed, and keep the direction of the groove 521 of the coupling 52 consistent with the disassembly and assembly direction of the steering valve 32, so as to facilitate the reset and installation of the steering valve 32.

[0107] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A pulse oscillation testing device integrating lung ventilation testing, characterized in that, include: Respiratory parameter measurement components, oscillating wave generator, airway components, drive mechanism, and air resistance components; The airway assembly defines a breathing channel, a first port of which is connected to the breathing parameter measuring component, and a second port of which is in communication with the air. The oscillation wave generator is used to send oscillation waves to the breathing channel; The airway assembly includes a diverting valve through which the breathing passage passes, and the drive mechanism is used to drive the diverting valve to change the configuration of the air resistance element in the breathing passage. During the pulse oscillation test, the air resistance element is positioned in the breathing channel to block the airflow entering and exiting the breathing channel through the second port. During lung ventilation testing, the air resistance element is positioned outside the breathing channel.

2. The pulse oscillation testing device according to claim 1, characterized in that, The drive mechanism is connected to the pneumatic resistance component in a transmission connection; During the pulse oscillation test, the air resistance element is driven to move to the second port of the breathing channel; During a lung ventilation test, the air resistance element is driven to be removed from the second port of the breathing channel.

3. The pulse oscillation testing device according to claim 2, characterized in that, The steering valve includes a valve core and a valve sleeve. The valve core has a first channel and a second channel. The air resistance element is fixed on the second channel. The drive mechanism is throttle-connected to the valve core. The second port of the breathing channel is disposed on the valve sleeve. During a lung ventilation test, the valve core is driven to a position where the first channel connects to the second port of the breathing channel; During the pulse oscillation test, the valve core is driven to move to the position where the second channel connects with the second port of the breathing channel.

4. The pulse oscillation testing device according to claim 3, characterized in that, The drive mechanism includes a coupling and a motor. The end face of the valve core facing the coupling has a radially extending ridge, and the end face of the coupling facing the valve core has a groove that mates with the ridge. The coupling transmits the power of the motor through the engagement of the groove and the ridge.

5. The pulse oscillation testing device according to claim 1, characterized in that, The breathing channel has a fixed section channel and an adjustable section channel. The second port of the breathing channel includes a ventilation port and an impedance port. The air resistance element is disposed on the impedance port. One end of the adjustable section channel is connected to the fixed section channel. The driving mechanism is used to drive and change the connection state of the adjustable section channel so that the other end of the adjustable section channel is selectively connected to the ventilation port or the impedance port.

6. The pulse oscillation testing device according to claim 5, characterized in that, The steering valve includes a valve core and a valve sleeve. The adjustable section channel is formed inside the valve core. The vent port and the impedance port are both located on the valve sleeve.

7. The pulse oscillation testing device according to any one of claims 2-6, characterized in that, The airway assembly includes an outer tube and an inner tube, the inner tube forming the breathing channel, and the inner tube being detachably and anti-rotationally fitted into the outer tube.

8. The pulse oscillation testing device according to claim 7, characterized in that, The airway assembly includes a first locking sleeve, which is detachably fitted onto the outer tube body. The inner wall of the first locking sleeve has a first abutment portion, and the inner tube body has a first stop portion extending out of the outer tube body. The first abutment portion is used to abut against the first stop portion to prevent the inner tube body from dislodging from the outer tube body.

9. The pulse oscillation testing device according to claim 8, characterized in that, The first locking sleeve is rotatably connected to the outer tube. When the first locking sleeve is rotated to the locked position, the first abutting part abuts against the first stop part to prevent the inner tube from coming out of the outer tube. When the first locking sleeve is rotated to the unlocked position, the first abutting part and the first stop part are misaligned to allow the inner tube to come out of the outer tube.

10. The pulse oscillation testing device according to claim 7, characterized in that, The airway assembly includes a steering valve that is detachably connected to the outer tube body.

11. The pulse oscillation testing device according to claim 10, characterized in that, The airway assembly includes a second locking sleeve, which is detachably fitted onto the outer tube body. The inner wall of the second locking sleeve has a second abutment portion. The diverting valve is disposed in the outer tube body and has a second stop portion extending out of the outer tube body. The second abutment portion is used to abut against the second stop portion to prevent the diverting valve from dislodging from the outer tube body.

12. The pulse oscillation testing device according to claim 11, characterized in that, The second locking sleeve is rotatably connected to the outer tube body. When the second locking sleeve is rotated to the locking position, the second abutment part abuts against the second stop part to prevent the steering valve from coming out of the outer tube body. When the second locking sleeve is rotated to the unlocking position, the second abutment part and the second stop part are misaligned to allow the steering valve to come out of the outer tube body.

13. The pulse oscillation testing device according to claim 10, characterized in that, The drive mechanism also includes a photoelectric switch, which is disposed on the outer tube and is used to detect the disassembly and assembly status of the steering valve.

14. The pulse oscillation testing device according to claim 13, characterized in that, The pulse oscillation testing equipment further includes a controller, which is used to perform the following steps: Determine the disassembly / assembly status of the steering valve; When the steering valve is in the disassembled state, the execution of control commands to the steering valve is stopped.

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