An inflatable device and a sputum drainage vest

Abstract

This application relates to the field of inflatable devices, and particularly to an inflating device and a sputum drainage vest, including a valve body. One end of the valve body is connected with a gas guide hose, and the end of the gas guide hose away from the valve body is used to be connected with the sputum drainage vest. One end of the valve body away from the gas guide hose is connected with an air cushion. Inside the valve body, a support ring, a first spring, a plugging block and a plugging ring are sequentially arranged. The circumferences of the support ring and the plugging ring are both fixedly connected with the inner wall of the valve body. The first spring is fixedly installed between the plugging block and the support ring, and the first spring is used to drive the plugging block to move towards the plugging ring. The plugging block is provided with a limiting opening, and a limiting rod is inserted into the limiting opening. The valve body is equipped with a driving mechanism, and the driving mechanism is used to drive the limiting rod to move and avoid the plugging block. This application has the effect of improving the comfort of wearing the sputum drainage vest.

Description

Technical Field

[0001] This application relates to the field of inflatable devices, and more particularly to an inflating device and a sputum drainage vest. Background Art

[0002] As an auxiliary medical device, the sputum drainage vest has been increasingly emphasized in clinical applications. It helps patients expel accumulated sputum in the lungs by simulating the slapping effect, significantly improving the patient's recovery speed and quality of life. Traditional sputum drainage methods rely on manual operation, which is time-consuming, laborious and has unstable effects. The emergence of the sputum drainage vest has greatly improved this situation. This device can not only evenly distribute vibrations throughout the back, but also adapt to the needs of different patients through adjustable intensities, thus ensuring the effectiveness and safety of treatment.

[0003] In the prior art, the sputum drainage vest mainly includes a vest body, a vibrator fixedly installed on the vest body, a controller and a battery. Among them, the vest body is generally designed in an inflatable form and is inflated by an internal air pump, so that the vest body expands and is in close contact with the human body, thereby better transmitting the vibration effect. In addition, the controller is used to control the working state of the vibrator, and the battery is responsible for powering the entire system to ensure the normal operation of the device.

[0004] However, the air pump installed in the existing sputum drainage vest will significantly increase the overall weight of the vest, which not only affects the wearing comfort of the patient, but also may cause discomfort after long-term wearing. Summary of the Invention

[0005] In order to improve the wearing comfort of the sputum drainage vest, this application provides an inflating device and a sputum drainage vest.

[0006] An inflating device and a sputum drainage vest provided by this application adopt the following technical solutions:

[0007] An inflating device includes a valve body. One end of the valve body is connected with a gas guide hose, and the end of the gas guide hose away from the valve body is used to be connected with a sputum drainage vest. The end of the valve body away from the gas guide hose is connected with an air cushion. Inside the valve body, a support ring, a first spring, a plugging block and a plugging ring are sequentially arranged. The circumferences of the support ring and the plugging ring are both fixedly connected with the inner wall of the valve body. The first spring is fixedly installed between the plugging block and the support ring, and the first spring is used to drive the plugging block to move towards the plugging ring. The plugging block is provided with a limiting port, and a limiting rod is inserted into the limiting port. The valve body is equipped with a driving mechanism, and the driving mechanism is used to drive the limiting rod to move and avoid the plugging block.

[0008] By adopting the above technical solution, when using the sputum drainage vest, the air guide hose is connected to the sputum drainage vest, and the weight of the inflation device will not be applied to the patient, thereby improving the comfort of wearing the sputum drainage vest. After the patient wears the sputum drainage vest and sits on the air cushion, the weight of the patient squeezes the air cushion, so that the air inside the air cushion enters the sputum drainage vest from the valve body and the air guide hose, thereby facilitating the inflation of the sputum drainage vest. After the sputum drainage vest presses against the patient's body, the driving mechanism drives the limiting rod to move, so that the limiting rod releases the blocking block, and the first spring drives the blocking block to press against the blocking ring, and the air of the air cushion stops flowing into the sputum drainage vest, thereby facilitating the control of the pressing force of the sputum drainage vest on the patient, and further improving the comfort of wearing the sputum drainage vest.

[0009] Optionally, the driving mechanism includes a first shrinkage cover, a second shrinkage cover, a corrugated pipe, a driving plate and a pressurizing component. The first shrinkage cover and the second shrinkage cover are both fixedly installed on the outer wall of the valve body. The first shrinkage cover and the second shrinkage cover are both communicated with the inside of the valve body. One end of the corrugated pipe is fixedly connected to the end of the first shrinkage cover away from the valve body, and the other end of the corrugated pipe is fixedly connected to the driving plate. One end of the limiting rod slides through the inside of the first shrinkage cover and is fixedly connected to the driving plate. The other end of the limiting rod slides through the inside of the second shrinkage cover. The pressurizing component is used to apply a pressure to the driving plate to move towards the valve body.

[0010] By adopting the above technical solution, when the patient sits on the air cushion, the air inside the air cushion enters the valve body, so that the air pressure inside the valve body increases. The increase in the air pressure inside the valve body pushes the driving plate to move away from the valve body, thereby facilitating the pulling out of the limiting rod from the limiting port, and further facilitating the first spring to drive the blocking block to press against the blocking ring for sealing.

[0011] Optionally, the pressurizing component includes a pressurizing cover, a first pressing plate, a driving rod, a second pressing plate and a second spring. The pressurizing cover is fixedly installed at the end of the first shrinkage cover away from the valve body. The corrugated pipe and the driving plate are located inside the pressurizing cover. The first pressing plate and the second pressing plate are both slidably arranged inside the pressurizing cover. The second spring is fixedly installed between the first pressing plate and the second pressing plate. The second spring is used to drive the first pressing plate and the second pressing plate to move away from each other. The driving rod is threadedly penetrated through the side of the pressurizing cover away from the first shrinkage cover.

[0012] By adopting the above technical solution, rotate the driving rod to adjust the length of the driving rod inside the second shrinkage cover, thereby restricting the sliding range of the second pressing plate inside the second shrinkage cover. By adjusting the sliding range of the second pressing plate inside the second shrinkage cover, it is convenient to adjust the pressure of the spring to drive the first pressing plate to press against the corrugated pipe, and further convenient to adjust the air pressure required for the limiting rod to be pulled out of the limiting port.

[0013] Optionally, a plurality of first teeth are fixedly installed on the rod body of the limiting rod, and a plurality of second teeth are fixedly installed on the inner wall of the limiting opening. The first teeth and the second teeth are both arranged at intervals along the length direction of the limiting rod, and a space between two adjacent first teeth is used for the second teeth to enter.

[0014] By adopting the above technical solution, when the first teeth and the second teeth are in mutual contact, the blocking block is blocked, the blocking block moves away from the blocking ring, and the valve body opens, so that the air inside the air cushion can enter the sputum drainage vest from the valve body and the air guide hose. When the first teeth and the second teeth are displaced from each other, the first spring drives the blocking block to press against the blocking ring, so as to facilitate closing the valve body.

[0015] Optionally, both sides of the first teeth and both sides of the second teeth are arc-shaped, the mutually facing sides of the first teeth and the second teeth are flat, a ball is embedded on the side of the first teeth close to the second teeth, the support ring is located on the side of the blocking block close to the air cushion, and the inner diameter of the support ring is smaller than the inner diameter of the blocking ring.

[0016] By adopting the above technical solution, when wearing the sputum drainage vest, the air pressure inside the valve body increases, so that the limiting rod moves away from the second shrinkage cover. When the limiting rod moves away from the second shrinkage cover, the friction between the first teeth and the second teeth is reduced by the balls, so as to facilitate the movement of the limiting rod away from the second shrinkage cover for unlocking.

[0017] When the sputum drainage vest needs to be deflated and taken off after use, rotate the drive rod. The drive rod pushes the limiting rod into the second shrinkage cover through the first pressing plate, the second pressing plate and the second spring. The limiting rod is mutually extruded by the arc-shaped side walls of the first teeth and the second teeth, so that the blocking block moves away from the blocking ring. After the flat positions of the first teeth and the second teeth are in mutual contact, the limiting rod locks the blocking block again.

[0018] Optionally, a first support plate is fixedly installed on the side of the air cushion close to the valve body. A first telescopic tube is installed on the top surface of the first support plate. A second telescopic tube is slidably inserted into the first telescopic tube. One end of the second telescopic tube away from the first support plate is sealed. A drive hose is arranged inside the first telescopic tube. One end of the drive hose is fixedly connected to the top end of the second telescopic tube, and the other end of the drive hose is arranged along the first support plate and communicated with the air cushion.

[0019] By adopting the above technical solution, when the patient sits on the air cushion, the air inside the air cushion enters the drive hose, so that the drive hose expands. After the drive hose expands, the drive hose drives the second telescopic tube to extend out, and the second telescopic tube supports the sputum drainage vest, so as to improve the comfort of wearing the sputum drainage vest.

[0020] Optionally, the cross-sections of the first telescopic tube and the second telescopic tube are both rectangular, a second support plate is provided at the top end of the second telescopic tube, the second support plate is provided with a sliding opening, the top end of the second telescopic tube is passed through the sliding opening, and the top end of the second telescopic tube is provided with a support groove for the second support plate located at the edge of the sliding opening to enter.

[0021] By adopting the above technical solution, different patients will have some differences in body shape. By moving the second support plate to support the expectoration vest, it is convenient to reduce the pressure of the expectoration vest on the patient, thereby improving the comfort of the patient wearing the expectoration vest.

[0022] Optionally, a receiving groove is provided on the top surface of the first support plate, and the bottom end of the first telescopic tube is hinged to the inner wall of the receiving groove, and the receiving groove is used for the first telescopic tube to enter after rotating to be horizontal.

[0023] By adopting the above technical solution, when the air cushion needs to be stored, the first telescopic tube is rotated to enter the storage groove, thereby facilitating the storage of the air cushion.

[0024] Optionally, a plurality of shunt pipes connected in a staggered manner horizontally and vertically are fixedly installed on the inner top wall of the air cushion, a supporting hose is fixedly installed between the tube body of the shunt pipe and the inner bottom wall of the air cushion, and an airbag is arranged on the peripheral side of the air cushion, and the airbag is connected to the shunt pipe.

[0025] By adopting the above technical solution, when the air cushion needs to be used, the airbag is pressed, and the gas inside the airbag enters the supporting hose, and the supporting hose expands the airbag, thereby facilitating the use of inflating the airbag.

[0026] A sputum removal vest comprises a vest body, on which an inflation joint is fixedly mounted, the inflation joint is used to be connected to an airway tube, a plurality of vibrators are fixedly mounted on the vest body, a controller and a battery are mounted on the back side of the vest body, the battery is used to power the controller and the vibrator, and the controller is used to turn the vibrator on and off.

[0027] By adopting the above technical solution, the vest body is connected to the inflatable device, so that the inflatable device is convenient to inflate. And the weight of the inflatable device will not be applied to the patient through the vest body, thereby improving the comfort of wearing the expectoration vest.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] By adopting a unique valve body structure and driving mechanism, it can achieve efficient inflation without increasing the weight of the sputum removal vest, effectively solving the problem of the vest being too heavy due to the installation of an air pump in the prior art, and improving the wearing comfort of the patient;

[0030] The pressurizing component in the driving mechanism can control the pressure required for the limiting rod to move, thereby facilitating the control of the pressing force on the patient after the sputum drainage vest expands, and further improving the comfort of the patient wearing the sputum drainage vest. Description of the Drawings

[0031] Figure 1 is a side view of the inflating device according to an embodiment of the present application;

[0032] Figure 2 is a top view of the inflating device according to an embodiment of the present application;

[0033] Figure 3 is Figure 2 a cross-sectional view taken along A-A;

[0034] Figure 4 is Figure 3 an enlarged view at A;

[0035] Figure 5 is a schematic structural view between the second telescopic tube and the second support plate according to an embodiment of the present application;

[0036] Figure 6 is Figure 5 a cross-sectional view taken along B-B;

[0037] Figure 7 is a front view of the sputum drainage vest according to an embodiment of the present application;

[0038] Figure 8 is a rear view of the sputum drainage vest according to an embodiment of the present application.

[0039] Description of the Reference Numerals: 1, valve body; 2, air guide hose; 3, air cushion; 4, support ring; 5, first spring; 6, plugging block; 7, plugging ring; 8, limiting port; 9, limiting rod; 10, first tooth block; 11, second tooth block; 12, ball; 13, driving mechanism; 131, first shrinkage cover; 132, second shrinkage cover; 133, corrugated pipe; 134, driving plate; 135, pressurizing component; 1351, pressurizing cover; 1352, first pressing plate; 1353, driving rod; 1354, second pressing plate; 1355, second spring; 14, first support plate; 15, storage groove; 16, first telescopic tube; 17, second telescopic tube; 18, driving hose; 19, second support plate; 20, support groove; 21, shunt tube; 22, support hose; 23, vest body; 24, inflating joint; 25, vibrator; 26, controller; 27, battery; 28, airbag; 29, sliding port. Detailed Description of the Embodiment

[0040] The following will Figures 1-8 further describe the present application in detail with reference to the attached drawings.

[0041] An embodiment of the present application discloses an inflation device and a sputum drainage vest.

[0042] Referring to Figure 1 、 Figure 2 As shown in

[0043] Referring to Figure 3 、 Figure 4 As shown in

[0044] Referring to Figure 3 、 Figure 4 As shown in

[0045] After pulling the limiting rod 9 to align the first tooth blocks 10 and the second tooth blocks 11, the limiting rod 9 abuts against each other through the first tooth blocks 10 and the second tooth blocks 11, thereby restricting the first spring 5 from pushing the blocking block 6 against the blocking ring 7, and further facilitating the air inside the air cushion 3 to flow from the valve body 1 and the air guide hose 2 to the sputum drainage vest. After pulling the limiting rod 9 to displace the first tooth blocks 10 and the second tooth blocks 11, the second tooth blocks 11 enter between two adjacent first tooth blocks 10, and the first tooth blocks 10 enter between two adjacent second tooth blocks 11, thereby facilitating the first pushing of the blocking block 6 against the blocking ring 7, and further facilitating the closing of the valve body 1.

[0046] The mutually facing sides of the first tooth block 10 and the second tooth block 11 are flatly arranged, and a ball 12 is embedded on the side of the first tooth block 10 close to the second tooth block 11. When pulling the limiting rod 9 to displace the first tooth block 10 and the second tooth block 11, the sliding friction is changed into rolling friction through the ball 12, so as to facilitate pulling the limiting rod 9 to move.

[0047] Both sides of the first tooth block 10 and both sides of the second tooth block 11 are arc-shaped. When it is necessary to separate the plugging block 6 from the plugging ring 7, pull the limiting rod 9, and the side walls of the first tooth block 10 and the second tooth block 11 are mutually extruded. Due to the arc-shaped side walls of the first tooth block 10 and the second tooth block 11, it is convenient to pull the limiting rod 9 to drive the plugging block 6 to separate from the plugging ring 7.

[0048] Refer to Figure 3 、 Figure 4 The valve body 1 is equipped with a driving mechanism 13, and the driving mechanism 13 includes a first shrinkage cover 131, a second shrinkage cover 132, a corrugated pipe 133, a driving plate 134 and a pressurizing assembly 135. The first shrinkage cover 131 and the second shrinkage cover 132 are both fixedly installed on the outer wall of the valve body 1, and the first shrinkage cover 131 and the second shrinkage cover 132 are both communicated with the inside of the valve body 1. One end of the corrugated pipe 133 is fixedly connected to the end of the first shrinkage cover 131 away from the valve body 1, and the other end of the corrugated pipe 133 is fixedly connected to the driving plate 134. One end of the limiting rod 9 slidably penetrates inside the first shrinkage cover 131 and is fixedly connected to the driving plate 134, and the other end of the limiting rod 9 slidably penetrates inside the second shrinkage cover 132.

[0049] When the patient sits on the air cushion 3, the pressure inside the valve body 1 increases. By the pressure inside the valve body 1 squeezing the driving plate 134 to move away from the valve body 1, the limiting rod 9 is enabled to move into the first shrinkage cover 131 against the friction force between the first tooth block 10 and the second tooth block 11 and the pressure of the pressurizing assembly 135. After the limiting rod 9 moves into the first shrinkage cover 131, the first tooth block 10 and the second tooth block 11 are staggered, so as to facilitate the first spring 5 to drive the plugging block 6 to tightly press the plugging ring 7, and further facilitate automatically closing the valve body 1.

[0050] Refer to Figure 3 、 Figure 4 The inner diameter of the support ring 4 is smaller than the inner diameter of the plugging ring 7. The small inner diameter of the support ring 4 reduces the amount of air passing through the support ring 4, and further facilitates the slow deflation of the air cushion 3 after being pressed. Since the inner diameter of the plugging ring 7 is larger than the inner diameter of the support ring 4, the air flow inside the valve body 1 to the sputum drainage vest is accelerated. When the air inside the sputum drainage vest is not full, the air pressure inside the valve body 1 is low, thus reducing the situation of the limiting rod 9 moving when the air inside the sputum drainage vest is not full.

[0051] Refer to Figure 3 、 Figure 4, the pressurizing assembly 135 includes a pressurizing cover 1351, a first pressing plate 1352, a driving rod 1353, a second pressing plate 1354 and a second spring 1355. The pressurizing cover 1351 is fixedly installed at one end of the first shrinkage cover 131 away from the valve body 1. The bellows 133 and the driving plate 134 are located inside the pressurizing cover 1351. The first pressing plate 1352 and the second pressing plate 1354 are both slidably arranged inside the pressurizing cover 1351, and the second spring 1355 is fixedly installed between the first pressing plate 1352 and the second pressing plate 1354. The elastic force of the second spring 1355 is used to drive the first pressing plate 1352 and the second pressing plate 1354 to move away from each other. The driving rod 1353 threadedly penetrates through one side of the pressurizing cover 1351 away from the first shrinkage cover 131.

[0052] Rotate the driving rod 1353 to adjust the length of the driving rod 1353 inside the pressurizing cover 1351. By adjusting the length of the driving rod 1353 inside the pressurizing cover 1351, the moving range of the second pressing plate 1354 inside the pressurizing cover 1351 is adjusted, and then it is convenient to adjust the pressure applied by the second spring 1355 on the driving plate 134 through the first pressing plate 1352. By adjusting the pressure applied by the first pressing plate 1352 on the driving plate 134, it is convenient to adjust the air pressure required to close the valve body 1, and then it is convenient to adjust the pressing force on the patient after the sputum drainage vest is inflated.

[0053] Refer to Figure 2 , Figure 5 , a first support plate 14 is fixedly installed on one side of the airbag 28 close to the valve body 1. A storage groove 15 is formed on the top surface of the first support plate 14, and a first telescopic tube 16 is hingedly installed on the inner wall of the storage groove 15. When the air cushion 3 needs to be stored, rotate the first telescopic tube 16 to be horizontal and enter the inside of the storage groove 15, so as to facilitate the storage of the air cushion 3.

[0054] Refer to Figure 5 , Figure 6 , a second telescopic tube 17 is slidably inserted into the first telescopic tube 16, the second telescopic tube 17 cannot be pulled out of the first telescopic tube 16, and one end of the second telescopic tube 17 away from the first support plate 14 is sealed. A driving hose 18 is arranged inside the first telescopic tube 16. One end of the driving hose 18 is fixedly connected to the top end of the second telescopic tube 17, and the other end of the driving hose 18 is arranged along the first support plate 14 and communicated with the air cushion 3.

[0055] When the patient sits on the air cushion 3, the air inside the air cushion 3 enters the driving hose 18, and the driving hose 18 is inflated and straightened, so that the second telescopic tube 17 extends out. After the patient gets up from the air cushion 3, the second telescopic tube 17 moves downward under gravity, so that the air inside the driving hose 18 returns to the inside of the air cushion 3.

[0056] Refer to Figure 5 , Figure 6The cross-sections of the first telescopic tube 16 and the second telescopic tube 17 are both rectangular, and a second support plate 19 is provided at the top of the second telescopic tube 17. The second support plate 19 is provided with a sliding opening 29, and the top of the second telescopic tube 17 is passed through the sliding opening 29. The top of the second telescopic tube 17 is provided with a support groove 20 for the second support plate 19 to enter at the edge of the sliding opening 29.

[0057] The second support plate 19 is moved by the sliding opening 29, so that the support plate is conveniently moved to the bottom of the expectoration vest and away from the back of the patient. When the second telescopic tube 17 moves upward, the second telescopic tube 17 drives the second support plate 19 to support the expectoration vest, thereby reducing the pressure of the expectoration vest on the patient, thereby improving the comfort of the patient wearing the expectoration vest.

[0058] The second support plate 19 is elastic, so that it is convenient to remove the second support plate 19 from the second telescopic tube 17 after the sliding opening 29 is opened.

[0059] Reference Figure 2 , Figure 3 The inner top wall of the air cushion 3 is fixedly installed with a plurality of shunt pipes 21 connected in a horizontal and vertical manner, and a support hose 22 is fixedly installed between the tube body of the shunt pipe 21 and the inner bottom wall of the air cushion 3. The side wall of the air cushion 3 is fixedly installed with an air bag 28, which is connected to the shunt pipe 21.

[0060] When the air cushion 3 is needed, the airbag 28 is pressed, and the air inside the airbag 28 enters the support hose 22 from the shunt pipe 21, thereby straightening the support hose 22. After the support hose 22 is straightened, the support hose 22 opens the air cushion 3, thereby facilitating the air cushion 3 to be filled with air.

[0061] Reference Figure 7 , Figure 8 A sputum removal vest includes a vest body 23, a gas-filled joint 24 is fixedly mounted on the vest body 23, and the gas-filled joint 24 is connected to an airway. A plurality of vibrators 25 are fixedly mounted on the vest body 23, and a controller 26 and a battery 27 are mounted on the back side of the vest body 23. The battery 27 is used to power the controller 26 and the vibrator 25, and the controller 26 is used to turn the vibrator 25 on and off.

[0062] After the patient wears the expectoration vest, the vibrator 25 is started by the controller 26, and the vibrator 25 vibrates and pats the patient, thereby facilitating the patient to expectorate. After expectoration ends, the vibrator 25 is turned off by the controller 26.

[0063] The implementation principle of the inflatable device and the expectoration vest of the embodiment of the present application is as follows: when the expectoration vest is needed to expectorate the patient, the expectoration vest and the inflatable device are taken out, the airbag 28 is pressed to straighten the support hose 22 and then the air cushion 3 is expanded, and air enters the air cushion 3 from the air guide hose 2 and the valve body 1.

[0064] After inflating the air cushion 3, connect the air guide hose 2 to the inflation connector 24 on the sputum drainage vest. Adjust the pressure of the booster assembly 135 on the drive plate 134 according to the required pressing force of the sputum drainage vest on the patient. Then the patient wears the sputum drainage vest and sits on the air cushion 3.

[0065] When the patient sits on the air cushion 3, the air inside the air cushion 3 enters the sputum drainage vest through the valve body 1 and the air guide hose 2, so that the sputum drainage vest expands and closely adheres to the patient's body, which is convenient for the vibrator 25 to vibrate to drain sputum from the patient.

[0066] After the sputum drainage vest presses against the patient's body, the air pressure inside the valve body 1 is high, so that the drive plate 134 moves away from the valve body 1. The drive plate 134 drives the limit rod 9 to move inside the first contraction cover 131, so that the first tooth block 10 and the second tooth block 11 are misaligned. Then the first spring 5 drives the plugging block 6 to press against the plugging ring 7, thereby closing the valve body 1, and the air inside the air cushion 3 stops flowing to the sputum drainage vest.

[0067] After closing the valve body 1, start the vibrator 25 to vibrate through the controller 26, which is convenient for draining sputum from the patient. After the patient finishes sputum drainage, the patient gets up from the air cushion 3, and then the booster assembly 135 drives the limit rod 9 to move inside the second contraction cover 132. The limit rod 9 is squeezed by the first tooth block 10 and the second tooth block 11, thereby driving the plugging block 6 to separate from the plugging ring 7. Then the air inside the sputum drainage vest returns to the inside of the air cushion 3 through the air guide hose 2 and the valve body 1, which is convenient for the patient to take off the sputum drainage vest.

[0068] If there are no other patients who need to use the sputum drainage vest subsequently, pull out the air guide hose 2 from the inflation connector 24 and release the air inside the air cushion 3, which is convenient for storing the air cushion 3 and the sputum drainage vest.

[0069] In this application, when the patient wears the sputum drainage vest, the weight of the inflation device is not applied to the patient, thereby improving the comfort of wearing the sputum drainage vest.

[0070] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An inflatable device, characterized in that: The invention comprises a valve body (1), one end of the valve body (1) is connected to an air guide hose (2), the end of the air guide hose (2) away from the valve body (1) is used to be connected to a sputum removal vest, the end of the valve body (1) away from the air guide hose (2) is connected to an air cushion (3), the interior of the valve body (1) is provided with a support ring (4), a first spring (5), a blocking block (6) and a blocking ring (7) in sequence, the peripheral side of the support ring (4) and the peripheral side of the blocking ring (7) are both fixedly connected to the inner wall of the valve body (1), the first spring (5) is fixedly installed between the blocking block (6) and the support ring (4), the first spring (5) is used to drive the blocking block (6) to move towards the blocking ring (7), the blocking block (6) is provided with a limiting opening (8), a limiting rod (9) is inserted inside the limiting opening (8), and the valve body (1) is provided with a driving mechanism (13), the driving mechanism (13) is used to drive the limiting rod (9) to move to avoid the blocking block (6); A first support plate (14) is fixedly mounted on one side of the air cushion (3) close to the valve body (1); a first telescopic tube (16) is mounted on the top surface of the first support plate (14); a second telescopic tube (17) is slidably inserted into the interior of the first telescopic tube (16); an end of the second telescopic tube (17) away from the first support plate (14) is sealed; a driving hose (18) is arranged inside the first telescopic tube (16); one end of the driving hose (18) is fixedly connected to the top end of the second telescopic tube (17); and the other end of the driving hose (18) is arranged along the first support plate (14) and is connected to the air cushion (3); The cross-sections of the first telescopic tube (16) and the second telescopic tube (17) are both rectangular. A second support plate (19) is provided at the top end of the second telescopic tube (17). The second support plate (19) is provided with a sliding opening (29). The top end of the second telescopic tube (17) is passed through the sliding opening (29). The top end of the second telescopic tube (17) is provided with a support groove (20) for the second support plate (19) to enter at the edge of the sliding opening (29).

2. An inflatable device according to claim 1, characterized in that: The driving mechanism (13) comprises a first shrinkable cover (131), a second shrinkable cover (132), a bellows (133), a driving plate (134) and a pressurizing assembly (135); the first shrinkable cover (131) and the second shrinkable cover (132) are both fixedly mounted on the outer wall of the valve body (1); the first shrinkable cover (131) and the second shrinkable cover (132) are both connected to the interior of the valve body (1); one end of the bellows (133) is fixedly connected to an end of the first shrinkable cover (131) away from the valve body (1); the other end of the bellows (133) is fixedly connected to the driving plate (134); one end of the limit rod (9) is slidably disposed inside the first shrinkable cover (131) and is fixedly connected to the driving plate (134); the other end of the limit rod (9) is slidably disposed inside the second shrinkable cover (132); and the pressurizing assembly (135) is used to apply pressure to the driving plate (134) to move toward the valve body (1).

3. An inflatable device according to claim 2, characterized in that: The boost assembly (135) comprises a boost cover (1351), a first pressure plate (1352), a driving rod (1353), a second pressure plate (1354) and a second spring (1355); the boost cover (1351) is fixedly mounted on an end of the first shrink cover (131) away from the valve body (1); the bellows (133) and the driving plate (134) are located inside the boost cover (1351); the first pressure plate (1352) and the second pressure plate (1354) are both slidably arranged inside the boost cover (1351); the second spring (1355) is fixedly mounted between the first pressure plate (1352) and the second pressure plate (1354); the second spring (1355) is used to drive the first pressure plate (1352) and the second pressure plate (1354) to move away from each other; and the driving rod (1353) is threadedly penetrated through a side of the boost cover (1351) away from the first shrink cover (131).

4. An inflatable device according to claim 1, characterized in that: A plurality of first tooth blocks (10) are fixedly mounted on the rod body of the limiting rod (9), and a plurality of second tooth blocks (11) are fixedly mounted on the inner wall of the limiting opening (8); the first tooth blocks (10) and the second tooth blocks (11) are arranged at intervals along the length direction of the limiting rod (9), and a space between two adjacent first tooth blocks (10) is provided for the second tooth blocks (11) to enter.

5. An inflatable device according to claim 4, characterized in that: Both sides of the first tooth block (10) and both sides of the second tooth block (11) are arc-shaped; the first tooth block (10) and the second tooth block (11) are arranged flat on the side facing each other; a ball (12) is embedded on the side of the first tooth block (10) close to the second tooth block (11); the support ring (4) is located on the side of the sealing block (6) close to the air cushion (3); and the inner diameter of the support ring (4) is smaller than the inner diameter of the sealing ring (7).

6. An inflatable device according to claim 1, characterized in that: A receiving groove (15) is provided on the top surface of the first support plate (14); the bottom end of the first telescopic tube (16) is hinged to the inner wall of the receiving groove (15); the receiving groove (15) is used for the first telescopic tube (16) to enter after rotating to a horizontal position.

7. An inflatable device according to claim 1, characterized in that: A plurality of shunt pipes (21) connected in a horizontal and vertically staggered manner are fixedly mounted on the inner top wall of the air cushion (3); a supporting hose (22) is fixedly mounted between the tube body of the shunt pipe (21) and the inner bottom wall of the air cushion (3); an air bag (28) is arranged on the peripheral side of the air cushion (3); and the air bag (28) is in communication with the shunt pipe (21).

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