A rehabilitation device for dysphagia

Abstract

The present invention relates to the technical field of rehabilitation devices, and particularly relates to a rehabilitation device for dysphagia, which includes a support mechanism for supporting the whole device. A fixing ring is installed on the support mechanism, and a swinging rod is rotatably installed on the fixing ring. A swinging mechanism is installed on the fixing ring, and the swinging mechanism is used to drive the swinging rod to swing left and right around the rotating shaft; one end of the swinging rod is connected to a negative pressure tube and is internally communicated. A suction nozzle is installed at the end of the negative pressure tube far away from the swinging rod; a liquid storage tank is fixedly sleeved on the negative pressure tube; a partition plate that divides the interior of the liquid storage tank into two spaces is installed in the liquid storage tank, and a plurality of temperature adjustment mechanisms are embedded in the partition plate. The temperature adjustment mechanisms release the heat and cold generated by them into the two spaces in the liquid storage tank respectively. This device directly uses pressurized hot and cold liquids to change the shape of the suction nozzle at the front end, so that the device can not only fix the tongue tip by negative pressure for tongue extension training, but also perform hot and cold stimulation on the target area of the patient's oral cavity.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation devices, and more particularly, to a rehabilitation device for dysphagia. Background Art

[0002] Dysphagia, as a core functional disorder in stroke sequelae (incidence rate is about 37%-78%), advanced Parkinson's disease (incidence rate > 80%), and elderly sarcopenia patients, its pathological essence involves the dual action mechanisms of abnormal innervation of suprahyoid muscles (genioglossus, styloglossus, etc.) and impaired oral sensory conduction pathways. Clinical studies have shown that when the tongue muscle contractility drops below 18 kPa (normal value: 30-45 kPa), the risk of aspiration in patients will increase sharply by 3.2 times (Dysphagia 2019;34:448), and the lack of temperature sensitivity of oral mucosa (threshold > 2°C) will directly lead to a delay in swallowing trigger exceeding 800 ms (JNeurol Sci 2021;420:117263). This reveals the necessity of the synergistic treatment of tongue muscle strength training and temperature stimulation from the neurophysiological level.

[0003] In tongue muscle strength training, tongue impedance training and left-right tongue extension training are usually adopted. In order to enable patients to extend their tongues left and right and fully stretch the tongue, existing rehabilitation devices for dysphagia usually use a negative pressure method to suck the patient's tongue tip, and then pull it left and right to achieve the training effect. For example, the rehabilitation training device for Parkinson's patients with dysphagia disclosed in the Chinese invention patent (CN117959137A). This training device is provided with a suction nozzle at the front end of the mounting rod, and a negative pressure cylinder is connected to the suction nozzle. The mounting rod can swing left and right under the action of the rotating assembly, and under the negative pressure action of the negative pressure cylinder, the patient's tongue tip can be adsorbed on the suction nozzle, so that the patient can perform left-right tongue extension training under the combined action of the negative pressure cylinder and the rotating assembly.

[0004] During cold and heat stimulation training, an ice cotton swab is usually used to gently touch specific parts such as the soft palate, posterior pharyngeal wall, root of the tongue, vallecula epiglottica, and buccal mucosa. After stimulation, the patient is immediately guided to perform an empty swallowing action to strengthen the reflex. And for heat stimulation, a tongue depressor is wrapped with a warm gauze and also gently touches the target area to promote local blood circulation and relieve muscle tension.

[0005] When performing the above rehabilitation training, a tongue muscle training device, an ice cotton swab, and a warm tongue depressor need to be used separately, the operation is cumbersome, and the training efficiency is low. At present, there is no rehabilitation device on the market that can perform the above training in sequence. In view of this problem, the applicant has invented a rehabilitation device for dysphagia that can not only perform tongue muscle stretching training but also perform cold and heat stimulation training. Summary of the Invention

[0006] The object of the present invention is to provide a rehabilitation device for dysphagia. This device directly uses pressurized hot and cold liquids to change the shape of the suction nozzle at the front end, enabling the device to not only fix the tongue tip by negative pressure for tongue extension training but also perform hot and cold stimulation on the target area in the patient's oral cavity.

[0007] The present invention is implemented as follows. A rehabilitation device for dysphagia includes a support mechanism for supporting the whole device. A fixing ring is installed on the support mechanism, and a swinging rod is rotatably installed on the fixing ring. A swinging mechanism is installed on the fixing ring, and the swinging mechanism is used to drive the swinging rod to swing left and right around the rotating shaft; one end of the swinging rod is connected to and internally communicated with a negative pressure tube. The end of the negative pressure tube far from the swinging rod is installed with a suction nozzle; a liquid storage tank is fixedly sleeved on the negative pressure tube; a partition is installed in the liquid storage tank to divide its interior into two spaces, and a plurality of temperature adjustment mechanisms are embedded in the partition. The temperature adjustment mechanisms release the heat and cold generated by them into the two spaces in the liquid storage tank respectively; a liquid supply tube is embedded in the side wall of the negative pressure tube. One end of the liquid supply tube is connected to the suction nozzle, and the other end of the liquid supply tube is installed with a pump body. A communication mechanism is installed between the pump body and the liquid storage tank, and the communication mechanism is used to adjust the communication state between the two spaces of the pump body and the liquid storage tank; the pump body can pressurize different temperature liquids in the liquid storage tank into the side wall of the suction nozzle to make the opening at the front end of the suction nozzle smaller and can also adjust the side wall temperature of the suction nozzle.

[0008] The swinging mechanism includes a stepping motor, a vertical rod, and a rotating rod; a vertical chute one is opened on the side wall of the vertical rod close to the rotating rod; the rotating rod is fixedly connected to the rotating shaft of the stepping motor, and the end of the rotating rod far from the output end of the stepping motor is a protrusion. The protrusion of the rotating rod is located in the chute one and is in contact with the side wall of the chute one.

[0009] A negative pressure mechanism is also installed on the support mechanism. The negative pressure mechanism is communicated with the position of the rotating shaft of the swinging rod and is internally communicated with the swinging rod to form a negative pressure channel inside.

[0010] Further, the temperature adjustment mechanism includes a plurality of refrigeration semiconductors, two heat conduction plates, and two groups of heat dissipation fins; both ends of the plurality of refrigeration semiconductors are fixedly connected to the two heat conduction plates respectively, and the two groups of heat dissipation fins are fixedly connected to the two heat conduction plates respectively; the plurality of refrigeration semiconductors and the two heat conduction plates are all embedded in the partition.

[0011] Further, the communication mechanism includes an annular control box body, a driving gear, a driven gear, and a knob; the control box body is fixedly sleeved on the negative pressure tube. The driven gear and the driving gear are both located inside the control box body. The driven gear is rotatably sleeved on the negative pressure tube. The driving gear meshes with the driven gear, and the axis of the driving gear is fixedly connected to the knob; the driven gear is provided with two through holes one on circumferences with different radii. The pump body and the liquid storage tank are both communicated with the inside of the control box body. When the driven gear rotates, the two through holes one can be communicated with the outlet positions of the two spaces of the corresponding liquid storage tank.

[0012] Furthermore, the negative pressure mechanism includes a negative pressure cylinder, a threaded rod, a sleeve, a first piston, a connecting pipe, and a transmission device; one end of the connecting pipe is rotatably connected to the rotating shaft of the swing rod and is in communication with the inside of the swing rod, and the other end of the connecting pipe is connected to the negative pressure cylinder; the first piston is hermetically and slidably installed in the negative pressure cylinder; one end of the sleeve is fixedly connected to the first piston, the sleeve is sleeved on the threaded section of the threaded rod, and the end of the threaded rod is fixedly connected to the power output end of the transmission device, and the transmission device transmits the power of the stepping motor to the threaded rod.

[0013] Furthermore, the transmission device includes a power input shaft, a first transmission rod, a worm, a transmission gear, a synchronizer, two transmission wheels, and a translation unit; the end of the power input shaft is fixedly connected to the stepping motor; one end of the first transmission rod is fixedly connected to the rotating rod, the first transmission rod is rotatably sleeved on the end of the power input shaft, the worm is also rotatably sleeved on the power input shaft, and the synchronizer is slidably sleeved on the power input shaft and is spline-connected to the power input shaft; the two transmission wheels are respectively fixedly sleeved on the first transmission rod and the worm, and the two side surfaces of the synchronizer and the side surfaces of the transmission wheels close to the synchronizer have meshing teeth, and the translation unit can translate the synchronizer so that the synchronizer can be respectively connected to the two transmission wheels; the worm meshes with the transmission gear.

[0014] Furthermore, the translation unit includes a cross bar, a translation block, a lead screw, and a servo motor; a second chute is formed on one side of the cross bar close to the synchronizer, the servo motor is fixedly installed at one end of the second chute, the output end of the servo motor is fixedly connected to the end of the lead screw, and the other end of the lead screw is rotatably connected to the second chute, and the translation block is sleeved on the lead screw; an annular groove is formed on the side wall of the synchronizer, and the end of the translation block is located in the annular groove and is in contact with the synchronizer.

[0015] Furthermore, the suction nozzle includes a hemispherical first fixed housing and two rotating housings, the first fixed housing is fixedly connected to the negative pressure pipe, two symmetric third chutes are formed in the first fixed housing, the two rotating housings are respectively slidably installed in the third chutes, and both third chutes are in communication with the liquid supply pipe; the rotating shaft of the rotating housing is connected to the first fixed housing by means of a torsion spring; a first liquid storage cavity is formed in each of the two rotating housings, and an elastic one-way valve is provided at one end of the first liquid storage cavity close to the negative pressure pipe, and the elastic one-way valve can pump liquid into the first liquid storage cavity when the pump body continuously pressurizes.

[0016] Furthermore, the suction nozzle includes a second fixed housing, a second bracket, a fixed cylinder, a second piston, a second slider, a connecting rod, a second spring, a plurality of second transmission rods, a plurality of support rods, and a flexible cloth; the fixed cylinder is fixedly installed in the second fixed housing through the second bracket, the second piston is slidably installed in the fixed housing, both ends of the second spring are fixedly connected to the second piston and the end of the fixed cylinder respectively, both ends of the connecting rod are connected to the second slider and the second piston respectively, and the connecting rod is in sealed sliding contact with the fixed cylinder, and an elastic one-way valve is installed on the second piston; one end of the liquid inlet pipe is connected to the fixed cylinder, and the second slider is slidably sleeved on the liquid inlet pipe; the side wall of the second slider is rotatably connected to a plurality of second transmission rods at the same time, the plurality of second transmission rods are rotatably connected to the plurality of support rods correspondingly, and the ends of the plurality of support rods are rotatably connected to the liquid inlet pipe at the same time. When the support rods are fully extended, they can be in contact with the inner side wall of the second fixed housing; the flexible cloth is in two layers, attached to the plurality of support rods, and a chamber is formed between the two layers of flexible cloth and is communicated with the liquid inlet pipe.

[0017] Furthermore, the suction nozzle is made of flexible silicone with openings on both sides. One end of the flexible silicone is connected to the negative pressure pipe, and a second liquid storage chamber is opened in the flexible silicone and is communicated with the liquid supply pipe.

[0018] Furthermore, the elastic one-way valve includes a push rod, a first spring, and a sealing plate; one end of the first spring is fixedly installed in the through hole of the rotating housing or the second piston, and the other end of the first spring is fixedly connected to the sealing plate; the push rod is connected to the first fixed housing or the fixed cylinder, and the push rod can push open the sealing plate to make the first spring in a stretched state.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. Connect the negative pressure pipe to the suction nozzle, and the rotating shaft of the negative pressure pipe is connected to the negative pressure mechanism through a connecting pipe, so that the patient's tongue tip can be adsorbed on the suction nozzle by negative pressure attraction; at the same time, connect a swinging mechanism to the end of the swinging rod, so that the suction nozzle at the front end can be driven to swing left and right, thereby performing left and right tongue extension training on the patient; in addition, a liquid supply pipe is arranged on the inner wall of the negative pressure pipe, and both ends of the liquid supply pipe are connected to the pump body and the inner wall chamber of the suction nozzle respectively. Under the pressure of the pump body, not only can the opening at the front end of the suction nozzle be reduced, but also the temperature at the front end of the suction nozzle can be quickly changed through the heat conduction of hot and cold liquids, so that cold and hot stimulation training can be performed on the patient;

[0021] 2. A partition is provided in the liquid storage tank, and multiple temperature adjustment mechanisms are embedded in the partition. The heating end and the cooling end of the temperature adjustment mechanism are respectively located in two spaces of the liquid storage tank, so as to make full use of the heat and cold generated by the temperature adjustment mechanism to realize refrigeration and heating of the liquids in the two spaces of the liquid storage tank respectively. In addition, a communication mechanism is provided between the pump body and the liquid storage tank, so that the low-temperature liquid and the high-temperature liquid can be respectively pressurized into the inner wall of the nozzle, and the temperature of the nozzle can be quickly adjusted through heat conduction to realize cold and hot stimulation training on the designated area of the patient.

[0022] 3. A chute three is opened in one side wall of the spherical fixed housing. Two rotating housings rotate along the chute three. At the same time, an elastic one-way valve is provided at one end of the rotating housing close to the negative pressure pipe. When the pump body pressurizes the hot and cold liquids into the fixed housing one, it can not only push the rotating housing to rotate, making the opening at the front end of the nozzle smaller or even closed, but also allow the hot and cold liquids to enter the liquid storage cavity one of the rotating housing, so that the front end of the closed nozzle can quickly reach the temperature of the liquid, and then directly use the closed nozzle to perform cold and hot stimulation training on the designated area of the patient's oral cavity. In addition, the central position of the rotating housing is connected to the central position of the fixed housing one by a torsion spring. In this way, when the pump body pressurizes in the reverse direction, the rotating housing can automatically return to the initial position, and the liquid can return to the liquid storage tank, and the liquid is adjusted to the designated temperature by the temperature adjustment mechanism again.

[0023] 4. Two layers of flexible cloth are laid on multiple support rods. The chamber formed between the two layers of flexible cloth is communicated with the liquid inlet pipe. A slider two is slidably arranged on the liquid inlet pipe. A transmission rod two is arranged between the slider two and the support rod. The slider two is connected to the piston two through a connecting rod. At the same time, an elastic one-way valve is provided on the piston two. In this way, when the pump body continuously pressurizes the liquid, it can not only make multiple support rods unfold, so that the flexible cloth seals and blocks the front opening of the fixed housing two, but also pressurize the hot and cold liquids into the cavity between the two layers of flexible cloth, so that cold and hot stimulation training can be directly performed on the designated area of the patient's oral cavity with the closed nozzle.

[0024] 5. The nozzle is set as a spherical flexible silica gel with openings at both ends, and a liquid storage cavity two is arranged in the flexible silica gel. The liquid storage cavity two is communicated with the liquid supply pipe. When the pump body pressurizes, the front opening of the flexible silica gel can be reduced, and the temperature of the flexible silica gel can be quickly adjusted, so that cold and hot stimulation training can be directly performed on the designated area of the patient's oral cavity with the flexible silica gel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a side view of a swallowing disorder rehabilitation device provided in Embodiment 1 of the present invention;

[0026] Figure 2 is a top view of a swallowing disorder rehabilitation device provided in Embodiment 1 of the present invention;

[0027] Figure 3 is Figure 2 the sectional view at A-A in

[0028] Figure 4 is Figure 2 the sectional view at B-B in

[0029] Figure 5 is Figure 2 the enlarged view at C in

[0030] Figure 6 is the top view of the swing mechanism provided in Embodiment 1 of the present invention;

[0031] Figure 7 is Figure 6 the enlarged view at A in

[0032] Figure 8 is the side sectional view of the swing mechanism provided in Embodiment 1 of the present invention;

[0033] Figure 9 is the side sectional view when the suction nozzle is open provided in Embodiment 1 of the present invention;

[0034] Figure 10 is Figure 9 the enlarged view at A in

[0035] Figure 11 is the top view of a dysphagia rehabilitation device provided in Embodiment 2 of the present invention;

[0036] Figure 12 is the structural schematic diagram of the suction nozzle in the closed state provided in Embodiment 2 of the present invention;

[0037] Figure 13 is the structural schematic diagram of the suction nozzle in the open state provided in Embodiment 2 of the present invention;

[0038] Figure 14 is Figure 13 the enlarged view at A in

[0039] Figure 15 is the top view of a dysphagia rehabilitation device provided in Embodiment 3 of the present invention;

[0040] Figure 16 is the structural schematic diagram when the suction nozzle is open provided in Embodiment 3 of the present invention.

[0041] The reference numerals involved in the above-mentioned drawings:

[0042] 1. Base; 2. Lifting plate; 3. Stepper motor; 4. Rotating rod; 5. Vertical rod; 6. Fixed ring; 7. Swing rod; 8. Control box; 9. Negative pressure pipe; 10. Rotating housing; 11. First fixed housing; 12. Knob; 13. Liquid storage tank; 14. Support plate; 15. Through slot; 16. Connecting block; 17. Refrigeration semiconductor; 18. Heat sink; 19. Partition; 20. Pump body; 21. Liquid supply pipe; 22. Driven gear; 23. Driving gear; 24. First through hole; 25. Heat conducting plate; 26. Threaded rod; 27. Negative pressure cylinder; 28. Connecting pipe; 29. First piston; 30. Sleeve; 31. Flexible silica gel; 32. First chute; 33. Second liquid storage cavity; 34. First slider; 35. First transmission rod; 36. Annular groove; 37. Synchronizer; 38. Power input shaft; 39. Worm; 40. Cross bar; 41. Servo motor; 42. Lead screw; 43. Translating block; 44. Second chute; 45. Transmission wheel; 46. Transmission gear; 47. First liquid storage cavity; 48. Third chute; 49. Sealing plate; 50. First spring; 51. First bracket; 52. Second through hole; 53. Thrust rod; 54. Second fixed housing; 55. Flexible cloth; 56. Support rod; 57. Liquid inlet pipe; 58. Second slider; 59. Second bracket; 60. Second transmission rod; 61. Connecting rod; 62. Fixed cylinder; 63. Third through hole; 64. Second piston; 65. Second spring. Detailed implementation mode

[0043] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0044] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0045] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation of the present invention. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0046] Refer to Figure 1-16 as shown, which is a preferred embodiment provided by the present invention.

[0047] Embodiment 1: A dysphagia rehabilitation device includes a support mechanism for supporting the whole device. The rehabilitation device in this embodiment is placed on a table for use. The specific structure is as follows Figure 1 shown. It mainly consists of a base 1, a lifting plate 2, and a support plate 14. The lifting plate 2 is vertically installed on the base 1, and the end of the support plate 14 is fixedly installed on the side wall of the lifting end of the lifting plate 2. A double-layer circular fixing ring 6 is fixedly installed on the support plate 14. One end of the two fixing rings 6 close to the lifting plate 2 is connected by a connecting block 16. A swing rod 7 is rotatably installed on the fixing ring 6. The rotation axis of the swing rod 7 is located at the end of the fixing ring 6 away from the lifting plate 2. A swing mechanism for driving the swing rod 7 to swing left and right in the horizontal direction is installed between the fixing rings 6; one end of the swing rod 7 is connected to a negative pressure tube 9 and is internally connected. A suction nozzle is installed at the end of the negative pressure tube 9 away from the swing rod 7. Under the action of negative pressure, the patient's tongue tip will be adsorbed on the suction nozzle. Combining Figure 2 shown, a liquid storage tank 13 is fixedly sleeved on the negative pressure tube 9; a partition 19 that divides the inside of the liquid storage tank 13 into two spaces is installed in the liquid storage tank 13. A plurality of temperature adjustment mechanisms are embedded along the circumferential direction of the partition 19. In the initial state, the two spaces of the liquid storage tank 13 are filled with water, and the temperature adjustment mechanisms release the heat and cold generated by them into the water on both sides of the partition 19 respectively.

[0048] In this embodiment, the heating and cooling of water are realized by using a thermoelectric cooler. Specifically, as Figure 4 shown, the temperature adjustment mechanism mainly consists of a plurality of N-P thermoelectric semiconductors 17, two heat conducting plates 25, and a plurality of heat sinks 18. The plurality of thermoelectric semiconductors 17 are distributed along the length of the partition 19. The two ends of the thermoelectric semiconductor 17 are respectively fixedly connected to the heat conducting plates 25. The plurality of heat sinks 18 are respectively fixedly installed on the side walls of the heat conducting plates 25. Among them, the thermoelectric semiconductor 17 and the two heat sinks 18 are both embedded in the partition 19, and the heat sinks 18 are located on both sides of the partition 19. In this way, by using the principle that one end of the thermoelectric semiconductor 17 cools and the other end heats, the water on both sides of the partition 19 can be cooled and heated respectively. The two kinds of temperature liquids are used for cold and heat stimulation training on the designated area of the patient's oral cavity. With this structural design, the cold and heat generated by the thermoelectric semiconductor can be fully utilized.

[0049] In order to be able to deliver water at different temperatures to the nozzle position, in this embodiment, two liquid supply pipes 21 are embedded in the side wall of the negative pressure pipe 9. At the same time, a pump body 20 is installed on the negative pressure pipe 9. In order to be able to pump the water in the liquid storage tank 13 into the inner wall of the nozzle and also pump the water back to the liquid storage tank 13 after cold and heat stimulation training, the pump body 20 in this embodiment adopts a peristaltic pump that can rotate forward and backward, and one end of the pump body 20 is connected to the end of the liquid supply pipe 21. In order to enable the pump body 20 to deliver water at different temperatures in the liquid storage tank 13 respectively, a communication mechanism sleeved on the negative pressure pipe 9 is provided between the liquid storage tank 13 and the pump body 20. Combined with Figure 2 and Figure 3 As shown, the communication mechanism mainly consists of a control box 8, a driving gear 23, a driven gear 22 and a knob 12; the control box 8 is fixedly sleeved on the negative pressure pipe 9, the driving gear 23 and the driven gear 22 are both located inside the control box 8, the driven gear 22 is rotatably sleeved on the negative pressure pipe 9, the axis of the driving gear 23 is connected to the knob 12, and the driving gear 23 and the driven gear 22 are meshed with each other. As Figure 3 shown, two through holes 24 are opened on the circumferences with different radii on the driven gear 22, and the two through holes 24 are respectively located on both sides of the negative pressure pipe 9. The other end of the pump body 20 is connected to the circumferential radius positions of the two through holes 24 of the control box 8 through two pipes at the same time. At the same time, the two spaces of the liquid storage tank 13 are also connected to the circumferential radius positions of the two through holes 24. In this way, when the driven gear 22 rotates, the pump body 20 can be respectively communicated with the spaces on both sides of the partition 19. In this way, the pump body 20 can pressurize the water at different temperatures in the two spaces to the inner wall of the nozzle, achieving the effect of cold and heat stimulation training on the designated area of the patient's oral cavity. The power input mode of the communication mechanism in this embodiment is realized by manually rotating the knob 12, or it can also be driven in the form of a motor, so that electric adjustment can be carried out, enabling the driven gear 22 to rotate to a designated position and allowing the pump body 20 to be respectively communicated with the two liquid storage spaces of the liquid storage tank 13.

[0050] In order to enable the nozzle to adsorb the patient's tongue tip during the left and right tongue stretching training, and the front end opening of the nozzle shrinks and the temperature becomes the designated temperature for cold and heat stimulation during the cold and heat stimulation training, combined with Figure 2 and Figure 9As shown, the nozzle of this embodiment mainly consists of a fixed housing 11 and two rotating housings 10; the fixed housing 11 is a semi-spherical housing with an opening at the front end and is connected to the negative pressure pipe 9 at the rear end; two sliding grooves 48 are opened in the upper and lower side walls of the fixed housing 11, and the two rotating housings 10 are respectively located in the sliding grooves 48 and rotate along the sliding grooves 48. The rotating axis of the rotating housing 10 is connected to the side wall of the fixed housing 11 by a torsion spring, which can make the rotating housing 10 automatically return to the initial position (inside the fixed housing 11) without the action of pressurization. The end parts of the two sliding grooves 48 are respectively connected to the two negative pressure pipes 9, so that when the pump body 20 pressurizes, water can enter the sliding grooves 48 to push the rotating housing 10 to rotate and make it contact (such as Figure 2 ). In order to enable the moving housing with a closed front end to quickly reach the specified temperature for cold and heat stimulation, as shown in combination with Figure 9 and Figure 10 , in this embodiment, a liquid storage chamber 47 is opened in the rotating housing 10, and an elastic one-way valve is installed at one end of the liquid storage chamber 47 close to the liquid supply pipe 21. When the two rotating housings 10 are in contact, the pump body 20 continues to pressurize, and water will flush open the elastic one-way valve and enter the liquid storage chamber 47. The rotating housing 10 is made of a metal with a high thermal conductivity. Considering the comprehensive cost, the rotating housing 10 of this embodiment is made of aluminum material, and the thermal conductivity is about 237 W / (m·K).

[0051] In order to enable the water in the liquid storage chamber 47 to return to the liquid storage tank 13 under the action of the pump body 20 for temperature adjustment, as shown in Figure 10 , the elastic one-way valve of this embodiment mainly consists of a sealing plate 49, a spring 50 and a push rod 53. For stable installation, the bottom of the push rod 53 is fixedly installed at the connection of the sliding groove 48 and the liquid supply pipe 21 through a bracket 51. One end of the spring 50 is fixedly connected to the side wall of the through hole 52, and the other end is fixedly connected to the sealing plate 49. When the sealing plate 49 is separated from the push rod 53, the sealing plate 49 is stretched by the spring 50 to block the through hole 52. When the rotating housing 10 returns to the initial position ( Figure 9 shown position), the push rod 53 can push open the sealing plate 49, so that the liquid storage chamber 47 is communicated with the liquid supply pipe 21, and the pump body 20 can transport the water in the liquid storage chamber 47 to the liquid storage tank 13.

[0052] In this embodiment, the swing mechanism mainly consists of a stepping motor 3, a rotating rod 4 and a vertical rod 5. As shown in combination with Figure 6 and Figure 8As shown, the stepping motor 3 is fixedly installed on the connecting block 16. A vertical chute 32 is provided on one side of the vertical rod 5 facing the stepping motor 3. The protruding part of the rotating rod 4 is the slider 34. The slider 34 is located in the chute 32 and makes a sliding contact with the chute 32. The side wall of the other end of the rotating rod 4 is fixedly connected to the output end of the stepping motor 3. When the stepping motor 3 drives the rotating rod 4 to rotate, the slider 34 will move in the chute 32. Under the rotation of the rotating rod 4, the swing rod 7 can swing left and right along the horizontal direction. In this embodiment, to prevent the vertical rod 5 and the rotating rod 4 from interfering with the support plate 14, as Figure 1 shown, a through groove 15 is provided on the support plate 14 in this embodiment.

[0053] In this embodiment, the negative pressure mechanism makes the front end of the suction nozzle in a negative pressure state by means of suction. Combining Figure 2 and Figure 5 shown, the negative pressure mechanism mainly consists of a connecting pipe 28, a piston 29, a sleeve 30, a negative pressure cylinder 27 and a threaded rod 26. The negative pressure cylinder 27 is fixedly installed on the support plate 14. The connecting pipe 28 is embedded in the fixing ring 6. One end of the connecting pipe 28 is inserted into the rotation axis of the swing rod 7 ( Figure 8 shown), communicating with the inside of the swing rod 7. The other end of the connecting pipe 28 is connected to the negative pressure cylinder 27. The piston 29 is slidably installed in the negative pressure cylinder 27. One end of the sleeve 30 is fixedly connected to the piston 29. The sleeve 30 is sleeved on the threaded section of the threaded rod 26.

[0054] In order to enable the stepping motor 3 to drive the swing rod 7 to swing and the piston 29 to suck respectively, a transmission device is provided between the swing mechanism and the negative pressure mechanism, as Figure 7As shown in the figure, the transmission device mainly consists of a power input shaft 38, a first transmission rod 35, a worm 39, a transmission gear 46, a synchronizer 37, two transmission wheels 45 and a translation unit. The end of the power input shaft 38 is fixedly connected to the output end of the stepping motor 3; one end of the first transmission rod 35 is fixedly connected to the rotating rod 4. In order for the first transmission rod 35 to rotate stably, a support block (not marked in the figure) needs to be fixedly installed on the support plate 14. The first transmission rod 35 passes through the support block and is rotatably sleeved on the end of the power input shaft 38. The worm 39 is also rotatably sleeved on the power input shaft 38, and the end of the worm 39 is connected to the connecting block 16 by means of a bearing. The synchronizer 37 is slidably sleeved on the power input shaft 38 and is spline-connected to the power input shaft 38; the two transmission wheels 45 are respectively fixedly sleeved on the first transmission rod 35 and the worm 39. The two side surfaces of the synchronizer 37 and the side surfaces of the transmission wheels 45 close to the synchronizer 37 have meshing teeth. The translation unit can translate the synchronizer 37 so that the synchronizer 37 can be connected to the two transmission wheels 45 by means of meshing teeth; the worm 39 meshes with the transmission gear 46. The center of the transmission gear 46 is fixedly connected to the end of the threaded rod 26, and the threaded rod 26 also plays a role in supporting the transmission gear 46.

[0055] In order to control the left and right movement of the synchronizer 37, the translation unit of this embodiment is as Figure 7 shown, and mainly consists of a cross bar 40, a lead screw 42, a servo motor 41 and a translation block 43; the end of the cross bar 40 is fixedly connected to the connecting block 16. A second chute 44 is opened on the side of the cross bar 40 close to the synchronizer 37. The output end of the servo motor 41 is fixedly connected to the end of the lead screw 42. The translation block 43 is sleeved on the lead screw 42. An annular groove 36 is opened on the rotating side wall of the synchronizer 37, and the end of the translation block 43 is located in the annular groove 36. In this way, when the lead screw 42 rotates, it can drive the translation block 43 to move left and right, thereby driving the synchronizer 37 to translate left and right. In this way, the output power of the stepping motor 3 can be transmitted to the swing mechanism and the negative pressure mechanism respectively.

[0056] In this embodiment, the negative pressure tube 9 and the swing rod 7 can also be connected in a detachable manner, such as by means of a threaded connection, so that the patient can perform cold and hot stimulation training on a specified area of the oral cavity according to his own situation. At the same time, in this embodiment, an external power cord or a storage battery can be used to supply power to each component. In addition, a control chip is used to control various electric control operations.

[0057] Working principle: When the device is used for cold stimulation training, the pump body 20 is connected to the cavity storing ice water in the liquid storage tank 13 by rotating the knob 12. The pump body 20 is pressurized to make the water enter the chute 3 48, pushing the rotating shell 10 to rotate. When the two rotating shells 10 collide with each other, the pump body 20 continues to pressurize, and the ice water breaks the sealing plate 49 and enters the liquid storage chamber 1 47, thereby reducing the temperature of the rotating shell 10. In order to maintain this state, the communication channel between the pump body 20 and the liquid storage tank 13 can be cut off by rotating the knob 12. When the training is completed, the pump body 20 is reversely pressurized, and the ice water in the chute 3 48 first enters the liquid storage tank 13. The rotating shell 10 returns to the initial position under the action of the torsion spring. At this time, the push rod 53 will push open the sealing plate 49, so that the liquid storage chamber 1 47 is connected with the liquid supply pipe 21, so that the ice water in the liquid storage chamber 1 47 will be pressurized into the liquid storage tank 13.

[0058] When the patient's tongue muscles need to be trained to extend the tongue to the left and right, the servo motor 41 drives the lead screw 42 to rotate. Since the translation block 43 is sleeved on the lead screw 42, the translation block 43 drives the synchronizer 37 to move to the right, so that the synchronizer 37 engages with the transmission wheel 45 on the worm 39, and then drives the stepper motor 3 to rotate. The stepper motor 3 drives the power output shaft to rotate. At this time, the power is transmitted to the worm 39 through the synchronizer 37, so that the transmission gear 46 can rotate, and the transmission gear 46 drives the threaded rod 26 to rotate. Under the rotation of the threaded rod 26, the sleeve 30 pulls the piston 29 to move in the direction of the transmission gear 46. In this way, the entire connecting tube 28, the negative pressure tube 9 and the inside of the suction nozzle are all negative pressure, and the patient's tongue tip can be adsorbed on the suction nozzle. When the switch is pressed, the servo motor 41 rotates in the opposite direction and the translation block 43 moves to the left. At this time, the synchronizer 37 is engaged with the transmission wheel 45 on the transmission rod 35. In this way, when the stepper motor 3 rotates, the transmission rod 35 can be rotated, thereby driving the swing rod 7 to swing, thereby realizing the left and right tongue extension training of the tongue muscles.

[0059] Embodiment 2: A swallowing disorder rehabilitation device. The difference between this embodiment and embodiment 1 is mainly in the structure of the nozzle. Figures 11-14As shown in the figure, the suction nozzle of this embodiment mainly consists of a fixed housing II 54, a bracket II 59, a fixed cylinder 62, a piston II 64, a slider II 58, a connecting rod 61, a spring II 65, a plurality of transmission rods II 60, a plurality of support rods 56, and two layers of flexible cloth 55. The fixed cylinder 62 is horizontally arranged inside the fixed housing II 54. In order to ensure the stable installation of the fixed housing II 54, the bracket II 59 is fixedly installed on the outer side wall of the fixed cylinder 62, and the bracket II 59 plays a supporting role. One end of the liquid inlet pipe 57 is connected to the fixed cylinder 62 and is in communication with the inside of the fixed cylinder 62. The slider II 58 is slidably sleeved on the liquid inlet pipe 57. At the same time, the other end of the liquid inlet pipe 57 is hinged to a plurality of support rods 56 along the circumferential direction. Both ends of the transmission rod II 60 are respectively hinged to the support rod 56 and the slider II 58. The flexible cloth 55 is attached to a plurality of support rods 56. When the slider II 58 slides on the liquid inlet pipe 57, this part of the structure is similar to the opening or inward contraction of an umbrella skeleton. When fully unfolded, the end of the support rod 56 will be completely attached to the inner side wall of the fixed housing II 54 in the manner of Figure 12 , and the entire flexible cloth 55 can block the opening at the front end of the fixed housing II 54. When the slider II 58 moves towards the fixed cylinder 62, as shown in Figure 13 , the entire structure will contract inward. At this time, the tongue can be adsorbed on the fixed housing II 54 by means of negative pressure. The flexible cloth 55 of this embodiment adopts a TPU coated cloth. This kind of flexible cloth 55 has the advantages of high elasticity, high wear resistance, not easy to crack after repeated bending, and the temperature resistance range is -50°C - 80°C, which is beneficial for patients to carry out cold and heat stimulation training.

[0060] As shown in Figure 14 , the piston II 64 slides along the inner side wall of the fixed cylinder 62. A through hole III 63 is opened on the piston II 64. The elastic one-way valve of this embodiment is the same as that of Embodiment 1, except that the spring I 50 of the elastic one-way valve in this embodiment is installed on the through hole III 63, and the ejector rod 53 is fixedly installed at the inner end of the fixed cylinder 62. The piston II 64 is connected to the slider II 58 through the connecting rod 61. A spring II 65 is connected between the piston II 64 and the inner end of the fixed cylinder 62. The end of the liquid supply pipe 21 is connected to the fixed cylinder 62. A sealed space is formed between the two layers of flexible cloth 55, and this sealed space is in communication with the liquid inlet pipe 57. In this way, when the pump body 20 continuously pressurizes, the flexible cloth 55 can be first unfolded to block the front end of the fixed housing II 54, and then water enters the cavity between the double-layer flexible cloth 55 to quickly adjust the temperature at the front end of the suction nozzle.

[0061] Working principle: When performing cold stimulation training, the pump body 20 pressurizes water through the liquid supply pipe 21 into the fixed cylinder body 62 and pushes the second piston 64 to move forward. Under the action of the connecting rod 61, the second slider 58 will be pushed to translate forward, and the second transmission rod 60 will drive all the support rods 56 to expand outwards. When the end of the support rod 56 fits against the inner side wall of the second fixed housing 54, the entire flexible cloth 55 will block the front end of the second fixed housing 54, thereby achieving the blocking of the front end of the second fixed housing 54. The pump body 20 continues to pressurize. At this time, water will enter the cavity between the two layers of flexible cloth 55, so that the temperature at the front end of the suction nozzle will rapidly decrease or increase, and cold stimulation training can be carried out on the designated area of the patient's oral cavity. When the training is completed, the pump body 20 pressurizes in the reverse direction, and conveys the water in the fixed cylinder body 62 to the liquid storage tank 13. The second piston 64 will return to the initial position under the pulling force of the second spring 65. At this time, the ejector rod 53 will push open the sealing plate 49, so that the water in the double-layer flexible cloth 55 can be smoothly conveyed to the liquid storage tank 13.

[0062] Embodiment 3: A swallowing disorder rehabilitation device, as Figure 15 and Figure 16 shown. The difference between this embodiment and Embodiment 1 also lies in the different structure of the suction nozzle. In this embodiment, the suction nozzle is made of flexible silica gel 31 with both ends open and spherical shell-shaped. The flexible silica gel 31 is connected to the negative pressure pipe 9. Inside the wall surface of the flexible silica gel 31, a second liquid storage cavity 33 is provided. The liquid supply pipe 21 is communicated with the second liquid storage cavity 33. When the pump body 20 continuously pressurizes and sends water into the second liquid storage cavity 33, the front end opening of the flexible silica gel 31 will shrink and become like Figure 15 the shape shown. At this time, the temperature of the flexible silica gel 31 will also change rapidly, so that cold and hot stimulation training can also be carried out on the designated area of the patient's oral cavity.

[0063] It should be emphasized that as long as the suction nozzle can close or become smaller at the front end opening under the pressure of hot and cold liquids, and at the same time can directly use hot and cold liquids to adjust the temperature at the front end of the suction nozzle, no matter what structure and material are adopted, such a suction nozzle is within the protection scope of this application.

[0064] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A dysphagia rehabilitation device, comprising a support mechanism, characterized in that: A fixing ring (6) is installed on the supporting mechanism, a swing rod (7) is rotatably installed on the fixing ring (6), a swing mechanism is installed on the fixing ring (6), and the swing mechanism is used to drive the swing rod (7) to swing left and right around the rotating shaft; one end of the swing rod (7) is connected to the negative pressure pipe (9), and a suction nozzle is installed at the end of the negative pressure pipe (9) away from the swing rod (7); a liquid storage tank (13) is sleeved on the negative pressure pipe (9); a partition (19) is installed in the liquid storage tank (13) to divide the interior of the liquid storage tank into two spaces, and a plurality of temperature regulating mechanisms are embedded in the partition (19) , the temperature regulating mechanism releases the heat and cold generated by it into two spaces in the liquid storage tank (13) respectively; a liquid supply pipe (21) is embedded in the side wall of the negative pressure pipe (9), one end of the liquid supply pipe (21) is connected to the suction nozzle, and a pump body (20) is installed at the other end of the liquid supply pipe (21), and a connecting mechanism for adjusting the connection state thereof is installed between the pump body (20) and the liquid storage tank (13); the pump body (20) can pressurize liquids of different temperatures in the liquid storage tank (13) into the side wall of the suction nozzle to reduce the opening at the front end of the suction nozzle and can also adjust the side wall temperature of the suction nozzle; The swing mechanism comprises a stepping motor (3), a vertical rod (5) and a rotating rod (4); a vertical slide groove (32) is formed on the side wall of the vertical rod (5) close to the rotating rod (4); the rotating rod (4) is fixedly connected to the rotating shaft of the stepping motor (3); the rotating rod (4) is protruded away from the output end of the stepping motor (3); the protrusion of the rotating rod (4) is located in the slide groove (32) and contacts the side wall of the slide groove (32); A negative pressure mechanism is installed on the support mechanism, and the negative pressure mechanism is connected to the rotation axis position of the swing rod (7) and is connected to the inside of the swing rod (7); The suction nozzle comprises a hemispherical fixed shell (11) and two rotating shells (10), the fixed shell (11) is fixedly connected to the negative pressure tube (9), two symmetrical slide grooves (48) are provided in the fixed shell (11), the two rotating shells (10) are respectively slidably installed in the slide grooves (48), and the two slide grooves (48) are both connected to the liquid supply tube (21); the rotating shaft of the rotating shell (10) is connected to the fixed shell (11) by a torsion spring; the two rotating shells (10) are both provided with a liquid storage chamber (47), and an elastic one-way valve is provided at one end of the liquid storage chamber (47) close to the negative pressure tube (9), and the elastic one-way valve can pump liquid into the liquid storage chamber (47) when the pump body (20) is continuously pressurized.

2. A dysphagia rehabilitation device according to claim 1, characterized in that: The temperature regulating mechanism comprises a plurality of refrigeration semiconductors (17), two heat conducting plates (25) and two groups of heat sinks (18); two ends of the plurality of refrigeration semiconductors (17) are respectively fixedly connected to the two heat conducting plates (25), and the two groups of heat sinks (18) are respectively fixedly connected to the two heat conducting plates (25); the plurality of refrigeration semiconductors (17) and the two heat conducting plates (25) are both embedded in the partition (19).

3. The dysphagia rehabilitation device according to claim 1, characterized in that: The communication mechanism comprises an annular control box (8), a driving gear (23), a driven gear (22) and a knob (12); the control box (8) is fixedly sleeved on the negative pressure tube (9), the driven gear (22) and the driving gear (23) are both located inside the control box (8), the driven gear (22) is rotatably sleeved on the negative pressure tube (9), the driving gear (23) meshes with the driven gear (22), and the axis of the driving gear (23) is fixedly connected to the knob (12); the driven gear (22) is provided with two through holes (24) on the circumference of different radii, the pump body (20) and the liquid storage tank (13) are both connected to the inside of the control box (8), and when the driven gear (22) rotates, the two through holes (24) can be connected to the outlet positions of the two spaces of the corresponding liquid storage tank (13).

4. The dysphagia rehabilitation device according to claim 1, characterized in that: The negative pressure mechanism comprises a negative pressure cylinder (27), a threaded rod (26), a sleeve (30), a piston (29), a connecting pipe (28) and a transmission device; one end of the connecting pipe (28) is rotatably connected to the rotating shaft of the swing rod (7) and communicates with the inside of the swing rod (7), and the other end of the connecting pipe (28) is connected to the negative pressure cylinder (27); the piston (29) is sealingly slidably installed in the negative pressure cylinder (27); one end of the sleeve (30) is fixedly connected to the piston (29), the sleeve (30) is sleeved on the threaded section of the threaded rod (26), the end of the threaded rod (26) is fixedly connected to the power output end of the transmission device, and the transmission device transmits the power of the stepping motor (3) to the threaded rod (26).

5. The dysphagia rehabilitation device according to claim 4, characterized in that: The transmission device comprises a power input shaft (38), a transmission rod (35), a worm (39), a transmission gear (46), a synchronizer (37), two transmission wheels (45) and a translation unit; the end of the power input shaft (38) is fixedly connected to the stepping motor (3); one end of the transmission rod (35) is fixedly connected to the rotating rod (4), the transmission rod (35) is rotatably sleeved on the end of the power input shaft (38), the worm (39) is also rotatably sleeved on the power input shaft (38), and the synchronizer (37) is slidably sleeved on the power input shaft (38) and spline-connected with the power input shaft (38); two transmission wheels (45) are fixedly sleeved on the transmission rod (35) and the worm (39) respectively; the two side surfaces of the synchronizer (37) and the side surface of the transmission wheel (45) close to the synchronizer (37) have meshing teeth; the translation unit can translate the synchronizer (37) so that the synchronizer (37) can be connected to the two transmission wheels (45) respectively; the worm (39) is meshed with the transmission gear (46).

6. The dysphagia rehabilitation device according to claim 5, characterized in that: The translation unit comprises a cross bar (40), a translation block (43), a screw rod (42) and a servo motor (41); a second slide groove (44) is provided on one side of the cross bar (40) close to the synchronizer (37); the servo motor (41) is fixedly mounted on one end of the second slide groove (44); the output end of the servo motor (41) is fixedly connected to the end of the screw rod (42); the other end of the screw rod (42) is rotationally connected to the second slide groove (44); the translation block (43) is sleeved on the screw rod (42); an annular groove (36) is provided on the side wall of the synchronizer (37); the end of the translation block (43) is located in the annular groove (36) and contacts the synchronizer (37).

7. The dysphagia rehabilitation device according to claim 1, characterized in that: The elastic one-way valve comprises a push rod (53), a spring (50) and a sealing plate (49); one end of the spring (50) is fixedly installed in a through hole of a rotating housing (10) or a piston (64), and the other end of the spring (50) is fixedly connected to the sealing plate (49); the push rod (53) is connected to a fixed housing (11) or a fixed cylinder (62), and the push rod (53) can push open the sealing plate (49) to put the spring (50) in a stretched state.

8. A dysphagia rehabilitation device, comprising a support mechanism, characterized in that: A fixing ring (6) is installed on the supporting mechanism, a swing rod (7) is rotatably installed on the fixing ring (6), a swing mechanism is installed on the fixing ring (6), and the swing mechanism is used to drive the swing rod (7) to swing left and right around the rotating shaft; one end of the swing rod (7) is connected to the negative pressure pipe (9), and a suction nozzle is installed at the end of the negative pressure pipe (9) away from the swing rod (7); a liquid storage tank (13) is sleeved on the negative pressure pipe (9); a partition (19) is installed in the liquid storage tank (13) to divide the interior of the liquid storage tank into two spaces, and a plurality of temperature regulating mechanisms are embedded in the partition (19) , the temperature regulating mechanism releases the heat and cold generated by it into two spaces in the liquid storage tank (13) respectively; a liquid supply pipe (21) is embedded in the side wall of the negative pressure pipe (9), one end of the liquid supply pipe (21) is connected to the suction nozzle, and a pump body (20) is installed at the other end of the liquid supply pipe (21), and a connecting mechanism for adjusting the connection state thereof is installed between the pump body (20) and the liquid storage tank (13); the pump body (20) can pressurize liquids of different temperatures in the liquid storage tank (13) into the side wall of the suction nozzle to reduce the opening at the front end of the suction nozzle and can also adjust the side wall temperature of the suction nozzle; The swing mechanism comprises a stepping motor (3), a vertical rod (5) and a rotating rod (4); a vertical slide groove (32) is formed on the side wall of the vertical rod (5) close to the rotating rod (4); the rotating rod (4) is fixedly connected to the rotating shaft of the stepping motor (3); the rotating rod (4) is protruded away from the output end of the stepping motor (3); the protrusion of the rotating rod (4) is located in the slide groove (32) and contacts the side wall of the slide groove (32); A negative pressure mechanism is installed on the support mechanism, and the negative pressure mechanism is connected to the rotation axis position of the swing rod (7) and is connected to the inside of the swing rod (7); The suction nozzle comprises a fixed shell (54), a bracket (59), a fixed cylinder (62), a piston (64), a slider (58), a connecting rod (61), a spring (65), a plurality of transmission rods (60), a plurality of support rods (56) and a flexible cloth (55); the fixed cylinder (62) is fixedly installed in the fixed shell (54) through the bracket (59); the piston (64) is slidably installed in the fixed shell; the two ends of the spring (65) are respectively fixedly connected to the piston (64) and the end of the fixed cylinder (62); the two ends of the connecting rod (61) are respectively connected to the slider (58) and the piston (64); and the connecting rod (61) and the fixed cylinder (62) are sealed. The piston (64) is in sliding contact, and an elastic one-way valve is installed on the second piston (64); one end of the liquid inlet pipe (57) is connected to the fixed cylinder (62), and the second slider (58) is slidably sleeved on the liquid inlet pipe (57); the side wall of the second slider (58) is rotatably connected to the plurality of transmission rods (60) at the same time, and the plurality of transmission rods (60) are correspondingly rotatably connected to the plurality of support rods (56), and the ends of the plurality of support rods (56) are rotatably connected to the liquid inlet pipe (57) at the same time, and when the support rods (56) are fully unfolded, they can contact the inner side wall of the second fixed shell (54); the flexible cloth (55) is composed of two layers, which are attached to the plurality of support rods (56), and a chamber is formed between the two layers of the flexible cloth (55) and is connected to the liquid inlet pipe (57).

9. The dysphagia rehabilitation device according to claim 8, characterized in that: The elastic one-way valve comprises a push rod (53), a spring (50) and a sealing plate (49); one end of the spring (50) is fixedly installed in a through hole of a rotating housing (10) or a piston (64), and the other end of the spring (50) is fixedly connected to the sealing plate (49); the push rod (53) is connected to a fixed housing (11) or a fixed cylinder (62), and the push rod (53) can push open the sealing plate (49) to put the spring (50) in a stretched state.

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