A sputum excretion assisting device for patients with respiratory diseases

Abstract

The present application relates to the technical field of medical auxiliary devices, and provides a sputum excretion aid for patients with respiratory diseases and a control method, which comprises a wearable vest, a binding belt for tightening the wearable vest, a mounting portion arranged on the back of the vest, a plurality of vibration assemblies, a buffer assembly, an adjusting unit and a control unit. The vibration assemblies are used for applying mechanical vibration to the back of the patient, and the adjusting unit is connected with the vibration assemblies simultaneously. The buffer assembly is formed with air cavities, the inlets of the buffer assemblies are connected to a connecting pipeline, the connecting pipeline is in communication with the air cavities, the inlet end of the connecting pipeline is in communication with the outlet of an external conveying device, and the connecting pipeline is used for conveying buffer medium to the air cavities. The control unit is used for sending a first control signal to the adjusting unit to adjust the vibration amplitude of each vibration assembly, and is also used for sending a second control signal to each vibration assembly to adjust the vibration frequency of each vibration assembly. The present application can loosen the deep airway accumulated sticky sputum and improve the overall sputum removal effect of deep and shallow sputum.

Description

Technical Field

[0001] This invention relates to the field of medical assistive device technology, and in particular to an auxiliary sputum expectoration device for patients with respiratory diseases. This invention also relates to a control method for this auxiliary sputum expectoration device for patients with respiratory diseases. Background Technology

[0002] Patients with respiratory diseases often experience airway sputum accumulation and thick sputum that is difficult to cough up. For patients with respiratory diseases who are unable to effectively expectorate sputum on their own or who are unable to cough up sputum, mechanical expectoration devices are commonly used in clinical practice to replace manual percussion and expectoration devices, becoming an important auxiliary means of clinical respiratory care.

[0003] The principle of mechanical sputum clearance is directional percussion. During the percussion vibration, the device generates horizontal shearing force and high-frequency vibration force, which can effectively loosen the viscous sputum accumulated deep in the bronchi and lungs. Combined with the patient's spontaneous coughing, the sputum is expelled from the body, thus achieving thorough clearance of sputum accumulated in the alveoli and deep bronchi. At the same time, mechanical sputum clearance uses gentle vibrations transmitted through the chest wall to loosen the sputum accumulated in the airway, improve the mucus properties, reduce sputum viscosity, and separate viscous sputum through bidirectional airflow. Positive pressure squeezes to drive the exhaled airflow, and pressure release forms the inhaled airflow. The bidirectional airflow changes the adhesion characteristics of mucus, helping to efficiently separate viscous sputum from the airway wall. It also activates spontaneous sputum clearance separation. The chest wall vibration can increase the frequency of airway ciliary movement, activate the airway's own sputum clearance mechanism, and push the loosened sputum towards the larger airways, improving the sputum clearance effect.

[0004] Currently, traditional wearable mechanical sputum clearance devices are suitable for preoperative airway cleaning, asthma, and chronic bronchitis, and have the effects of promoting secretion discharge, relieving bronchospasm, relaxing respiratory muscles, improving pulmonary blood circulation, and preventing venous stasis. Most devices currently use a method of injecting vibrating gas into a vest, using gas pressure fluctuations to vibrate the chest wall. This vibration method involves synchronized inflation and vibration throughout the entire system, resulting in weak sputum-directed propulsion capabilities. It can only loosen and expel surface sputum, and its effectiveness in clearing sputum accumulated in deep bronchi and alveoli is limited, leading to poor overall sputum clearance efficiency.

[0005] In addition, the stability of pure gas vibration structure is insufficient, the air pressure distribution is uneven during vibration operation, and local vibration deviation and force disorder are prone to occur. It is impossible to form a stable and balanced directional impact force, the vibration energy loss is large, and it is difficult to continuously and efficiently act on the target lung area. Summary of the Invention

[0006] In view of this, the present invention aims to provide an auxiliary sputum expectoration device for patients with respiratory diseases, so as to effectively loosen the deep phlegm accumulation in the airway, activate the body's autonomous sputum expectoration mechanism, and improve the overall clearance effect of deep and superficial sputum.

[0007] To achieve the above objectives, the technical solution of the present invention is implemented as follows: A respiratory disease patient's sputum expectoration device includes a wearable vest and straps for tightening the wearable vest, a mounting part disposed on the back of the vest, a plurality of vibration components disposed in the mounting part, buffer components disposed on both sides of the vibration components, an adjustment unit for adjusting the vibration amplitude of the vibration components, and a control unit. The vibration component is used to apply mechanical vibration to the patient's back. The adjustment unit is connected to multiple vibration components at the same time to uniformly adjust the vibration frequency of the multiple vibration components connected to it. The buffer assembly has an air cavity formed inside, and multiple inlets of the buffer assembly are connected to a connecting pipe. The connecting pipe is connected to several air cavities, and the inlet end of the connecting pipe is connected to the outlet of an external conveying device for conveying buffer medium to each air cavity. The buffer assembly applies a balanced supporting force to at least two sides of the vibration assembly through the pressure of the buffer medium in the air cavity, so as to prevent the vibration assembly from tilting or twisting during vibration. The control unit is used to send a first control signal to the adjustment unit to adjust the vibration amplitude of each of the vibration components; the control unit is also used to send a second control signal to each of the vibration components to adjust the vibration frequency of each of the vibration components.

[0008] Furthermore, the mounting section is formed with a first receiving cavity and a second receiving cavity that are sequentially staggered and connected. The first receiving cavity is used to receive an air bag with an air chamber, the second receiving cavity is used to receive the vibration assembly, the vibration part of the vibration assembly passes through the wearable vest, and the adjustment unit is disposed at the end of the vibration assembly away from the vibration part.

[0009] Furthermore, the adjustment unit includes a first vibration part of a plurality of vibration components disposed in the lower lung region, a second vibration part of a plurality of vibration components disposed in the middle lung region, and a third vibration part of a plurality of vibration components disposed in the upper lung region. The first vibration unit includes an upper pipeline connecting the vibration assembly to several lower lung regions and a first control valve; the second vibration unit includes a middle pipeline connecting the vibration assembly to several middle lung regions and a second control valve; and the third vibration unit includes a lower pipeline connecting the vibration assembly to several upper lung regions and a third control valve. The control unit is used to control the first control valve, the second control valve, and the third control valve to adjust the pressure of the upper pipeline, the middle pipeline, and the lower pipeline, respectively.

[0010] Furthermore, the vibration assembly includes a cylinder with a cavity, a cap covering one end of the cylinder, an electromagnetic drive unit disposed in the cavity of the cylinder, and a drive tube axially slidably connected in the cylinder. The drive tube is detachably connected to a striking head at one end near the wearable vest, and the electromagnetic drive unit drives the striking head to vibrate continuously.

[0011] Furthermore, the electromagnetic drive unit includes a magnetic tube sleeved on the drive tube, a sleeve sleeved on the outside of the magnetic tube, and a coil portion wound around the outside of the sleeve, the coil portion being disposed between the sleeve and the inner wall of the cylinder.

[0012] Furthermore, a limiting piece is formed at one end of the cylinder near the striking head, and a limiting ring is sleeved on the drive tube. The diameter of the limiting ring is larger than the inner hole of the limiting piece, which is used to limit the maximum axial displacement of the drive tube.

[0013] Furthermore, the magnetic tube includes a middle section and tapered sections disposed on both sides of the middle section, wherein the tapered sections are tapered with decreasing taper from the middle section to the ends; The middle section is provided with several grooves spaced apart along its axial direction. When the coil section is energized, the middle section moves axially with the drive tube.

[0014] Furthermore, an elastic element is sleeved on the outside of the drive tube, and a circular hole is provided inside the pressure cap for the drive tube to slide. The elastic element abuts between the sleeve and the pressure cap.

[0015] Furthermore, the adjustment assembly includes a fixed block with an inner cavity, a drive block slidably connected within the fixed block, the drive block including a piston disc abutting against the inner cavity of the fixed block, and a pressing block connected to one side of the piston disc, the pressing block abutting against the pressure cap; The pressure cap includes a main body and an annular cap sleeved on the outside of the main body. The annular cap has an inwardly protruding post inside. The outer wall of the cylinder is formed with a spiral groove. When pressure is applied to the pressure cap, the protruding post moves along the spiral groove, and the main body squeezes the elastic element to compress and store energy. The piston disc divides the inner cavity into an air inlet chamber and an air outlet chamber. The air inlet chamber is connected to the corresponding upper pipe, middle pipe, and lower pipe. The air outlet chamber is connected to the outside atmosphere through an air outlet pipe. A fourth control valve for opening and closing the pipe is provided on the air outlet pipe.

[0016] Compared with the prior art, the present invention has the following advantages: The respiratory disease patient-assisted sputum clearance device of this invention, by incorporating several vibration components mounted on the back of a vest, can directly output stable mechanical vibrations to the patient's lungs, stably generating horizontal shearing force and high-frequency vibration force, effectively loosening airway congestion and phlegm. A buffer component provides balanced support to both sides of the vibration components, preventing them from tilting or twisting due to the body's reaction force during high-frequency operation, ensuring stable vibration output posture and uniform force distribution. Simultaneously, the control unit, by outputting a first control signal and a second control signal, enables controllable adjustment of the vibration amplitude and frequency, effectively improving the stability of the sputum clearance operation.

[0017] Furthermore, the present invention also relates to a control method for an auxiliary sputum expectoration device for patients with respiratory diseases, employing the sputum expectoration device as described above, comprising the following steps: S1: The wearable vest is put on the patient's upper body and secured with the straps; S2: The vibration parameters of each vibration component are set by the control unit, and the vibration parameters include vibration frequency and vibration amplitude; S3: The control unit sends a first control signal to the adjustment unit corresponding to each vibration group according to the set vibration amplitude, and each adjustment unit independently adjusts the vibration amplitude of the corresponding vibration group according to the first control signal. The control unit sends a second control signal to each vibration component in each vibration group according to the vibration frequency set for each vibration group, and each vibration component generates mechanical vibration at a corresponding frequency according to the second control signal. S4: Each vibration group applies mechanical vibration to the corresponding lung area on the patient's back at its own set vibration frequency and amplitude. S5: During the vibration process, the first control signal or the second control signal sent to different lung area positions is adjusted in real time by the control unit to independently change the vibration amplitude or vibration frequency of each vibration group at different lung area positions.

[0018] The control method of the sputum-clearing device for patients with respiratory diseases of the present invention can uniformly set the vibration frequency and vibration amplitude parameters. Through the control unit, the first control signal and the second control signal are output respectively to realize the vibration amplitude of the vibration components in each lung area. It simulates the artificial progressive increase of amplitude from bottom to top to realize the zoned adjustment of different lung areas. The frequency is increased to achieve the effect of smooth sputum clearance, which conforms to the physiological sputum clearance law of the human body. It effectively activates the airway ciliary movement, enhances the separation and directional delivery of sputum, and avoids the drawbacks of uniform parameter treatment. It makes targeted adjustments according to the different conditions of different patients, which greatly improves the sputum clearance efficiency. Attached Figure Description

[0019] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the arrangement of the sputum suction device for patients with respiratory diseases according to an embodiment of the present invention; Figure 2 This is a top view of the wearable vest, mounting part, vibration component, and connecting pipeline described in an embodiment of the present invention. Figure 3 As described in the embodiments of the present invention Figure 2 Enlarged view of the left side of the middle section; Figure 4 This is a schematic diagram showing the connection between the vibration assembly, the mounting part, and the adjustment unit according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Wearable vest; 2. Straps; 3. Mounting part; 4. Vibration assembly; 5. Air chamber; 6. Adjustment unit; 7. Connecting pipes; First receiving cavity; 302, second receiving cavity; 402. Cylinder; 403. Gland; 404. Drive tube; 405. Striking head; 406. Magnetic tube; 407. Sleeve; 408. Coil section; 409. Limiting piece; 410. Limiting ring; 411. Elastic element; 602. Fixed block; 603. Fourth control valve; 604. Piston disc; 605. Pressing block; 606. Main body; 607. Annular cover; 608. Protruding post; 609. Spiral groove; 610. Air inlet chamber; 611. Air outlet chamber; 612. Air outlet pipeline; 701. Upper pipeline; 702. Middle pipeline; 703. Lower pipeline; 4051, middle section; 4052, tapered section; 4053, groove. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0022] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "back," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, in the description of this invention, unless otherwise explicitly defined, the terms "installation," "connection," "linking," and "connector" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention in light of the specific circumstances.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] This embodiment relates to an auxiliary sputum expectoration device for patients with respiratory diseases. In terms of overall structure, as follows... Figure 1 As shown, the sputum suction device includes a wearable vest 1, straps 2 for tightening the vest 1, a mounting part 3 on the back of the vest, several vibration components 4 disposed within the mounting part 3, buffer components on both sides of the vibration components 4, an adjustment unit 6 for adjusting the vibration amplitude of the vibration components 4, and a control unit. The vibration components 4 are used to apply mechanical vibration to the patient's back. The adjustment unit 6 is connected to multiple vibration components 4 simultaneously to uniformly adjust the vibration frequency of the multiple vibration components 4 connected to it.

[0026] The buffer assembly contains air chambers 5, and multiple buffer assembly inlets are connected to connecting pipes 7. Connecting pipes 7 communicate with several air chambers 5, and their inlets are connected to the outlet of an external conveying device, used to deliver buffering media to each air chamber 5. The buffer assembly, through the pressure of the buffering media within the air chambers 5, applies a balanced supporting force to at least both sides of the vibration assembly 4 to prevent the vibration assembly 4 from tilting or twisting during vibration. The control unit sends a first control signal to the adjustment unit 6 to adjust the vibration amplitude of each vibration assembly 4; the control unit also sends a second control signal to each vibration assembly 4 to adjust its vibration frequency.

[0027] Based on the above design concept, the sputum-clearing device for respiratory patients described in this embodiment, by setting several vibration components 4 on the mounting part 3 on the back of the vest, can directly output stable mechanical vibration to the patient's lungs, stably generating horizontal shear force and high-frequency vibration force, effectively loosening airway obstruction and phlegm. Furthermore, by setting a buffer component, balanced support force is provided on both sides of the vibration component 4 to prevent the vibration component 4 from tilting or twisting due to the reaction force from the human body during high-frequency operation, ensuring stable vibration output posture and uniform force distribution. Simultaneously, the control unit, by outputting a first control signal and a second control signal respectively, realizes controllable adjustment of vibration amplitude and vibration frequency, effectively improving the stability of sputum clearance operations.

[0028] like Figure 1As shown, the sputum suction device includes a wearable vest 1, straps 2, a mounting part 3, several vibration components 4, a cushioning component, an adjustment unit 6, and a control unit. The wearable vest 1 is made of breathable elastic fabric and is worn on the patient's upper body, secured by the straps 2. The mounting part 3 is located on the back of the wearable vest 1 and is used to mount the vibration components 4 and the cushioning component.

[0029] like Figures 2 to 3 As shown, the mounting part 3 has a first receiving cavity 301 and a second receiving cavity 302 formed in a staggered manner. The first receiving cavity 301 is used to receive the air bag with the air chamber 5, and the second receiving cavity 302 is used to receive the vibration component 4. The vibration part of the vibration component 4 passes through the wearable vest 1, and the adjustment unit 6 is located at the end of the vibration component 4 away from the vibration part. When the striking head 404 of the vibration component 4 acts on the human lungs, the striking head 404 will tilt due to the different angles of the reaction force. The buffer components on both sides can clamp the vibration component 4, and the position of each vibration component 4 will not shift too much due to the binding strap 2 tightening the body.

[0030] As a preferred embodiment, such as Figure 1 As shown, the adjustment unit 6 includes a first vibration section of several vibration components 4 disposed in the lower lung region, a second vibration section of several vibration components 4 disposed in the middle lung region, and a third vibration section of several vibration components 4 disposed in the upper lung region. The first vibration section includes an upper conduit 701 connecting the vibration components 4 in the lower lung region and a first control valve; the second vibration section includes a middle conduit 702 connecting the vibration components 4 in the middle lung region and a second control valve; and the third vibration section includes a lower conduit 703 connecting the vibration components 4 in the upper lung region and a third control valve. The control unit is used to control the first control valve, the second control valve, and the third control valve to adjust the pressure of the upper conduit 701, the middle conduit 702, and the lower conduit 703, respectively.

[0031] In practical implementation, the control unit is electrically connected to the first, second, and third control valves, respectively, to control the opening degree of each valve, thereby adjusting the pressure in the first, second, and third pipelines. In this embodiment, the three control valves are electromagnetic flow valves. The control unit can independently control the opening degree of the electromagnetic flow valves by outputting different electrical signals to adjust the medium flow rate and pipeline pressure in each zone pipeline. This allows the vibration area to be pushed out in a manner that gradually increases in amplitude from bottom to top, facilitating the discharge of sputum. Simultaneously, it can also provide individual targeted vibration drive based on the sputum accumulation area displayed by the instrument.

[0032] Preferably, such as Figure 3As shown, the vibration assembly 4 includes a cylinder 401 with a cavity, a pressure cap 402 covering one end of the cylinder 401, an electromagnetic drive unit disposed within the cavity of the cylinder 401, and a drive tube 403 axially slidably connected within the cylinder 401. A striking head 404 is detachably connected to one end of the drive tube 403 near the wearable vest 1, and the electromagnetic drive unit drives the striking head 404 to vibrate continuously.

[0033] Furthermore, the electromagnetic drive unit includes a magnetic tube 405 sleeved on the drive tube 403, a sleeve 406 sleeved on the outside of the magnetic tube 405, and a coil portion 407 wound around the outside of the sleeve 406. The coil portion 407 is located between the sleeve 406 and the inner wall of the cylinder 401. When the coil portion 407 is energized, it can generate a controllable electromagnetic field, which interacts with the inner magnetic tube 405 to stably drive the magnetic tube 405 and the integrated drive tube 403 to perform axial reciprocating motion, thereby realizing high-frequency vibration output.

[0034] In addition, such as Figure 3 As shown, a limiting piece 408 is formed at one end of the cylinder 401 near the striking head 404. A limiting ring 409 is fitted onto the drive tube 403. The diameter of the limiting ring 409 is larger than the inner hole of the limiting piece 408, which is used to limit the maximum axial displacement of the drive tube 403. During the reciprocating extension and retraction vibration of the drive tube 403 driven by the electromagnetic drive unit, the limiting ring 409 can move synchronously with the drive tube 403, and can cooperate with the fixed limiting piece 408 in real time to limit the maximum axial extension displacement of the drive tube 403, avoiding problems such as structural collision, component detachment, and excessive striking force caused by excessive sliding of the drive tube 403.

[0035] Preferably, as Figure 3 As shown, the magnetic tube 405 includes a middle section 4051 and tapered sections 4052 on both sides of the middle section 4051. The tapered sections 4052 gradually decrease in taper from the middle section 4051 to the ends. The middle section 4051 has several grooves 4053 spaced apart along its axial direction. When the coil section 407 is energized, the middle section 4051 moves axially with the drive tube 403. This irregularly shaped magnetic tube 405 structure can effectively optimize the power output effect of electromagnetic drive. The tapered sections 4052 at both ends can achieve a smooth transition of the electromagnetic field during axial movement, reduce the sudden change in magnetic force between the magnetic tube 405 and the coil section 407, reduce vibration jamming and power loss, and make the vibration process smoother and more continuous. Meanwhile, the axial groove 4053 structure of the middle section 4051 allows the magnetic reluctance of the magnetic tube 405 to change regularly when it moves to different axial positions, optimizing the electromagnetic force characteristics, so that after the coil section 407 is energized, the magnetic tube 405 can quickly and stably drive the drive tube 403 to complete the axial reciprocating movement.

[0036] like Figure 3As shown, an elastic element 410 is sleeved on the outside of the drive tube 403, and a circular hole is provided in the pressure cap 402 for the drive tube 403 to slide. The elastic element 410 abuts between the sleeve 406 and the pressure cap 402. In this embodiment, the elastic element 410 is a compression spring. When the electromagnetic drive unit drives the drive tube 403 to extend forward and vibrate, the front pressure cap 402 and the middle sleeve 406 are pressed against each other, causing the elastic element 410 to be compressed and contracted, completing the compression and energy storage. When the electromagnetic force disappears or changes direction, the elastic element 410 releases its elastic potential energy, quickly pushing the drive tube 403 to return to its original position, realizing the continuous cycle of high-frequency reciprocating vibration.

[0037] In addition, the central circular hole of the pressure cap 402 can radially limit and guide the drive tube 403, eliminate the radial offset of the drive tube 403 during vibration, ensure vibration coaxiality and stability, and improve the overall vibration output accuracy and operation smoothness.

[0038] More specifically, such as Figure 3 As shown, the adjustment assembly includes a fixed block 601 with an inner cavity, a driving block slidably connected within the fixed block 601, the driving block including a piston disc 603 abutting against the inner cavity of the fixed block 601, and a pressing block 604 connected to one side of the piston disc 603, the pressing block 604 abutting against the pressure cap 402. The pressure cap 402 includes a main body 605 and an annular cover 606 sleeved on the outside of the main body 605. The annular cover 606 has an inwardly protruding protrusion 607 inside, and a spiral groove 608 is formed on the outer wall of the cylinder 401. When pressure is applied to the pressure cap 402, the protrusion 607 moves along the spiral groove 608, and the main body 605 compresses the elastic element 410 to store energy.

[0039] like Figure 3 As shown, the piston disc 603 divides the inner cavity into an inlet chamber 609 and an outlet chamber 610. The inlet chamber 609 is connected to its corresponding upper pipe 701, middle pipe 702, and lower pipe 703. The outlet chamber 610 is connected to the external atmosphere through an outlet pipe 611, which is equipped with a fourth control valve 602 for opening and closing the pipe. The inlet chamber 609 is connected to the zoning pipes of each lung area, and the outlet chamber 610 is connected to the atmosphere through an external pipe with the fourth control valve 602. The air pressure can be controlled by opening and closing the valve. During operation, rotating the annular cover 606 causes the internal protrusion 607 to spirally advance along the spiral groove 608, pushing the pressure cap 402 body 605 forward to compress the elastic element 410 and change the pre-compression storage capacity. In conjunction with the air pressure driving the piston disc 603 to slide and finely adjust the pressure, the vibration stroke of the drive pipe 403 and the striking head 404 can be changed, realizing stepless adjustment of the vibration amplitude.

[0040] In this embodiment, the control unit is housed in a separate casing. The control unit includes a main control board, a power supply module, a signal generation module, a drive module, a valve drive module, a human-machine interface module, and a sensor interface module. The main control board integrates a microprocessor chip with multiple independent timers. Each timer can independently generate a PWM pulse signal to achieve independent frequency control of each vibration component 4. The chip has multiple pre-stored control modes, including a zoned independent frequency conversion mode and a wave-like timing mode. The main control board is peripherally equipped with interface circuits, a program burning circuit, and a communication circuit. The power supply module converts external AC power into stable DC power to supply power to the control unit and the vibration components 4.

[0041] The drive module is electrically connected to the main control board and amplifies the PWM pulse signal generated by the microprocessor chip before outputting it to the coil section 407 of each vibration component 4. The drive module contains multiple independent drive channels, each corresponding to one vibration component 4, enabling multi-channel independent drive. The valve drive module is electrically connected to the main control board and drives the control valves in the adjustment unit 6. The human-machine interface module is electrically connected to the main control board and includes a touch screen and physical buttons for users to set vibration parameters, select treatment modes, and start or stop treatment. The sensor interface module is electrically connected to the main control board and receives feedback signals from the pressure sensors on each vibration component 4, enabling closed-loop feedback control.

[0042] After the user sets the vibration frequency and amplitude for each lung zone via the touchscreen, the microprocessor chip generates multiple independent PWM signals of corresponding frequencies based on the settings. These signals are amplified by the drive module and then sent to the coil section 407 of each vibration component 4. Under the drive of the pulse current, the coil section 407 generates an alternating magnetic field, driving the magnetic tube 405 and the striking head 404 to produce mechanical vibrations at the corresponding frequencies. Simultaneously, the microprocessor chip sends control signals to the adjustment unit 6 via the air valve drive module to adjust the opening of each control valve to control the pipeline air pressure. In turn, the adjustment unit 6 changes the compression of the elastic element 410, thereby achieving independent control of the vibration amplitude.

[0043] The working principle of the electromagnetic drive unit described above is as follows: When the coil section 407 receives the pulse current output by the drive module, an alternating magnetic field is generated around the coil section 407. This magnetic field interacts with the magnetic tube 405 to generate an electromagnetic force, driving the magnetic tube 405 and the drive tube 403 to reciprocate along the axial direction, thereby causing the striking head 404 to generate high-frequency mechanical vibration.

[0044] Specifically, when the coil 407 is energized, the magnetic field generated by the coil 407 acts on the magnetic tube 405. Driven by electromagnetic force, the magnetic tube 405 moves away from or towards the striking head 404, causing the drive tube 403 and the striking head 404 to move synchronously. When the coil 407 is de-energized, the magnetic field disappears, and the magnetic tube 405 returns to its original position in the opposite direction under the restoring force of the elastic element 410. By controlling the frequency of energizing the coil 407, the frequency of reciprocating motion of the drive tube 403 and the striking head 404, i.e., the vibration frequency, can be controlled. By controlling the average current flowing through the coil 407, the magnitude of the electromagnetic force can be controlled, thereby controlling the vibration amplitude.

[0045] In the above embodiments, the external fluid delivery device can be a manually inflatable balloon or a miniature electric air pump, the buffer medium is air, the on / off state of each control valve is controlled by the control unit, and each pipeline is a flexible hose or a rigid pipe.

[0046] This embodiment also relates to a control method for an auxiliary sputum expectoration device for patients with respiratory diseases, using the sputum expectoration device as described above, including the following steps: S1: Put the wearable vest 1 on the patient's upper body and secure it with the straps 2; S2: The vibration parameters of each vibration component 4 are set via the control unit. These parameters include vibration frequency and amplitude. The user accesses the parameter setting interface via the touchscreen display and sets the vibration parameters for each vibration group in the lower, middle, and upper lung regions. These parameters include vibration frequency, amplitude, and treatment time. The user can also select treatment modes via the touchscreen display, including independent zone mode, wave mode (vibration is activated sequentially from bottom to top), enhanced release mode (low-frequency, high-amplitude vibration predominates in the lower lung region), and ciliary activation mode (high-frequency vibration predominates in all lung regions). After setting, the user saves the parameters using the confirmation button on the touchscreen display.

[0047] S3: The control unit sends a first control signal to the adjustment unit 6 corresponding to each vibration group according to the set vibration amplitude. Each adjustment unit 6 independently adjusts the vibration amplitude of the corresponding vibration group according to the first control signal. The control unit sends a second control signal to each vibration component 4 in each vibration group according to the vibration frequency set for each vibration group. Each vibration component 4 generates mechanical vibration at the corresponding frequency according to the second control signal. The microprocessor chip on the main control board generates multiple independent PWM signals of the corresponding frequency through its built-in timer according to the vibration frequency set for each lung area. After being amplified by the drive module, these signals are sent to the coil section 407 of each vibration component 4. The coil section 407 generates an alternating magnetic field to drive the magnet tube 405 and the tapping head 404 to generate mechanical vibration at the corresponding frequency. At the same time, the main control board sends a first control signal to the corresponding adjustment unit 6 through the air valve drive module according to the vibration amplitude set for each lung area. This controls the opening of the first, second, and third control valves, changing the gas pressure in the corresponding pipelines, and thus adjusting the vibration amplitude of each vibration group through the adjustment unit 6. As a result, each vibration group applies mechanical vibration to the corresponding lung area on the patient's back at its own set vibration frequency and amplitude.

[0048] When the user selects the wave mode, the start-up sequence of each lung area vibration group is as follows: the lower lung area vibration group starts first, the middle lung area vibration group starts after the first preset delay, and the upper lung area vibration group starts after the second preset delay, forming a wave-like vibration sequence from bottom to top.

[0049] During vibration, pressure sensors installed on each vibration component 4 detect the contact pressure in real time, and the detection signals are transmitted to the main control board via the sensor interface module. The main control board compares the detected values ​​with preset thresholds: when the contact pressure is lower than the preset threshold, it sends an adjustment signal to the corresponding adjustment unit 6 to increase the compression of the elastic element 410 of the vibration component 4 or prompt the user to adjust the tightness of the vest; when the contact pressure is higher than the preset threshold, it sends an adjustment signal to the corresponding adjustment unit 6 to decrease the compression of the elastic element 410 of the vibration component 4 to avoid excessive local pressure. At the same time, the user can adjust the vibration parameters of each lung area in real time via the touch screen during treatment, and the main control board updates the PWM signal and control valve drive signal in real time according to the adjusted parameters.

[0050] S4: Each vibration group applies mechanical vibration to the corresponding lung area on the patient's back at its own set vibration frequency and amplitude. S5: During vibration, the first or second control signal sent to different lung areas is adjusted in real time by the control unit to independently change the vibration amplitude or vibration frequency of each vibration group at different lung areas.

[0051] S6: When the treatment time reaches the preset value, the main control board automatically stops outputting PWM signals and closes all control valves, and the equipment enters standby mode. Users can also terminate the treatment at any time via the stop button on the touchscreen display or the emergency stop button on the casing.

[0052] The control method of the sputum expectoration device for patients with respiratory diseases in this embodiment can uniformly set the vibration frequency and vibration amplitude parameters. By outputting the first control signal and the second control signal through the control unit, the vibration amplitude of each lung area vibration component 4 is realized, and the amplitude is increased in a progressive manner from bottom to top, realizing the zoned adjustment of different lung areas. The frequency is increased to achieve the effect of smooth sputum expectoration, which conforms to the physiological sputum expectoration law of the human body. It effectively activates the airway ciliary movement, strengthens the separation and directional delivery of sputum, and avoids the drawbacks of uniform parameter treatment. It makes targeted adjustments according to the different conditions of different patients, which greatly improves the sputum expectoration efficiency.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sputum suction device for patients with respiratory diseases, comprising a wearable vest (1) and straps (2) for securing the wearable vest (1), characterized in that: It also includes a mounting part (3) on the back of the vest, several vibration components (4) in the mounting part (3), buffer components on both sides of the vibration components (4), an adjustment unit (6) for adjusting the vibration amplitude of the vibration components (4), and a control unit; The vibration component (4) is used to apply mechanical vibration to the patient's back. The adjustment unit (6) is connected to multiple vibration components (4) at the same time to uniformly adjust the vibration frequency of the multiple vibration components (4) connected to it. The buffer assembly has an air cavity (5) formed inside it. Multiple inlets of the buffer assembly are connected to a connecting pipe (7). The connecting pipe (7) is connected to several air cavities. The inlet end of the connecting pipe (7) is connected to the outlet of an external conveying device for conveying buffer medium to each air cavity (5). The buffer assembly applies a balanced supporting force to at least two sides of the vibration assembly (4) through the pressure of the buffer medium in the air cavity (5) to prevent the vibration assembly (4) from tilting or twisting during vibration. The control unit is used to send a first control signal to the adjustment unit (6) to adjust the vibration amplitude of each of the vibration components (4); the control unit is also used to send a second control signal to each of the vibration components (4) to adjust the vibration frequency of each of the vibration components (4).

2. The sputum expectoration device for patients with respiratory diseases according to claim 1, characterized in that: The mounting part (3) has a first receiving cavity (301) and a second receiving cavity (302) that are sequentially and alternately connected. The first receiving cavity (301) is used to receive an air bag with an air chamber (5), the second receiving cavity (302) is used to receive the vibration component (4), the vibration part of the vibration component (4) passes through the wearable vest (1), and the adjustment unit (6) is disposed at one end of the vibration component (4) away from the vibration part.

3. The sputum expectoration device for patients with respiratory diseases according to claim 2, characterized in that: The connecting pipe (7) includes a first vibration part of a plurality of vibration components (4) located in the lower lung region, a second vibration part of a plurality of vibration components (4) located in the middle lung region, and a third vibration part of a plurality of vibration components (4) located in the upper lung region. The first vibration unit includes an upper tubing (701) connecting the vibration assembly (4) to several lower lung regions and a first control valve; the second vibration unit includes a middle tubing (702) connecting the vibration assembly (4) to several middle lung regions and a second control valve; and the third vibration unit includes a lower tubing (703) connecting the vibration assembly (4) to several upper lung regions and a third control valve. The control unit is used to control the first control valve, the second control valve and the third control valve to adjust the pressure of the upper pipeline (701), the middle pipeline (702) and the lower pipeline (703) respectively.

4. The sputum expectoration device for patients with respiratory diseases according to claim 3, characterized in that: The vibration assembly (4) includes a cylinder (401) with a cavity, a cap (402) covering one end of the cylinder (401), an electromagnetic drive unit disposed in the cavity of the cylinder (401), and a drive tube (403) axially slidably connected in the cylinder (401). The drive tube (403) is detachably connected to a striking head (404) at one end near the wearable vest (1), and the electromagnetic drive unit drives the striking head (404) to vibrate continuously.

5. The sputum expectoration device for patients with respiratory diseases according to claim 4, characterized in that: The electromagnetic drive unit includes a magnetic tube (405) sleeved on the drive tube (403), a sleeve (406) sleeved on the outside of the magnetic tube (405), and a coil portion (407) wound around the outside of the sleeve (406). The coil portion (407) is located between the sleeve (406) and the inner wall of the cylinder (401).

6. The sputum expectoration device for patients with respiratory diseases according to claim 5, characterized in that: A limiting piece (408) is formed at one end of the cylinder (401) near the striking head (404). A limiting ring (409) is sleeved on the drive tube (403). The diameter of the limiting ring (409) is larger than the inner hole of the limiting piece (408) to limit the maximum axial displacement of the drive tube (403).

7. The sputum expectoration device for patients with respiratory diseases according to claim 5, characterized in that: The magnetic tube (405) includes a middle section (4051) and tapered sections (4052) disposed on both sides of the middle section (4051), wherein the tapered sections (4052) are tapered from the middle section (4051) toward the ends. The intermediate section (4051) is provided with a plurality of grooves (4053) spaced apart along its axial direction. When the coil section (407) is energized, the intermediate section (4051) moves axially along with the drive tube (403).

8. The sputum expectoration device for patients with respiratory diseases according to claim 7, characterized in that: An elastic element (410) is sleeved on the outside of the drive tube (403), and a circular hole is provided in the gland (402) for the drive tube (403) to slide. The elastic element (410) abuts between the sleeve (406) and the gland (402).

9. The sputum expectoration device for patients with respiratory diseases according to claim 8, characterized in that: The adjustment assembly includes a fixed block (601) with an inner cavity, a drive block slidably connected within the fixed block (601), the drive block including a piston disc (603) abutting against the inner cavity of the fixed block (601), and a pressing block (604) connected to one side of the piston disc (603), the pressing block (604) abutting against the pressure cap (402); The pressure cap (402) includes a main body (605) and an annular cap (606) sleeved on the outside of the main body (605). The annular cap (606) has an inwardly protruding protrusion (607) inside. The outer wall of the cylinder (401) is formed with a spiral groove (608). When pressure is applied to the pressure cap (402), the protrusion (607) moves along the spiral groove (608), and the main body (605) squeezes the elastic element (410) to compress and store energy. The piston disc (603) divides the inner cavity into an intake chamber (609) and an exhaust chamber (610). The intake chamber (609) is connected to the corresponding upper pipe (701), middle pipe (702) and lower pipe (703). The exhaust chamber (610) is connected to the outside atmosphere through an exhaust pipe (611). A fourth control valve (602) for switching the pipe on and off is provided on the exhaust pipe (611).

10. A method for controlling an auxiliary sputum expectoration device for patients with respiratory diseases, characterized in that, The sputum suction device according to any one of claims 1 to 9 comprises the following steps: S1: Wear the wearable vest (1) on the patient's upper body and secure it with the straps (2); S2: The vibration parameters of each vibration component (4) are set by the control unit, and the vibration parameters include vibration frequency and vibration amplitude; S3: The control unit sends a first control signal to the adjustment unit (6) corresponding to each vibration group according to the set vibration amplitude. Each adjustment unit (6) independently adjusts the vibration amplitude of the corresponding vibration group according to the first control signal. The control unit sends a second control signal to each vibration component (4) in each vibration group according to the vibration frequency set for each vibration group, and each vibration component (4) generates mechanical vibration of the corresponding frequency according to the second control signal. S4: Each vibration group applies mechanical vibration to the corresponding lung area on the patient's back at its own set vibration frequency and amplitude. S5: During the vibration process, the first control signal or the second control signal sent to different lung area positions is adjusted in real time by the control unit to independently change the vibration amplitude or vibration frequency of each vibration group at different lung area positions.

Images