CN118576467B - A portable four-in-one knee joint therapeutic device and method - Google Patents

Abstract

The embodiments of the present disclosure provide a portable four-in-one knee joint therapeutic instrument and method, which are applied in the field of medical device technology. It includes: a control panel, a therapeutic instrument body, a Chinese medicine external application device, and a rehabilitation exercise device; the control panel is electrically connected to the therapeutic instrument body and the Chinese medicine external application device, and can be detachably fixed to the patient's leg; the therapeutic instrument body is rotatably connected to the rehabilitation device, which is used to perform massage therapy and electrical stimulation therapy on the knee that extends into the therapeutic instrument body; the Chinese medicine external application device can be slidably assembled on the therapeutic instrument body, which is used to perform Chinese medicine hot compress therapy on the knee joint, and a sliding damper is provided between the Chinese medicine external application device and the therapeutic instrument; the rehabilitation device is used to fix the legs and feet and perform rehabilitation therapy. In this way, the present disclosure can select different functions for treatment according to the actual situation of the patient, and perform personalized settings and treatment according to the characteristics of the patient's disease, which effectively improves the treatment effect.

Description

A portable four-in-one knee joint therapeutic device and method

Technical Field

The present disclosure relates to the technical field of medical devices, and in particular to a portable four-in-one knee joint therapeutic device and method.

Background Art

The knee joint is a very important bone structure in the human body, which can control the smooth walking of the human body. Caring for and maintaining the knee joint is an important way to maintain good health.

Knee joint therapeutic devices use massage and other methods to maintain the knee joint. Most of the existing knee joint therapeutic devices use vibration, airbags, hot compresses or pulses to reduce and relieve knee problems. However, vibration and airbag massage are quite different from traditional Chinese medicine techniques, and cannot simulate the doctor's treatment techniques from a mechanistic perspective. In addition, the hot compress method is cumbersome, very time-consuming and has poor temperature control effects. Therefore, there is an urgent need for a knee joint therapeutic device and massage method that can effectively simulate traditional Chinese medicine simulation techniques and combine rehabilitation exercises, Chinese medicine external application and other maintenance methods.

Summary of the invention

The present invention provides a portable four-in-one knee joint therapeutic apparatus and method, which solves the technical problems of poor massage effect and complicated process of existing therapeutic apparatuses.

According to a first aspect of the present disclosure, there is provided a portable four-in-one knee joint therapeutic device, comprising: a control panel, a therapeutic device body, a Chinese medicine external application device, and a rehabilitation exercise device;

The control panel is electrically connected to the therapeutic apparatus body and the Chinese medicine external application device respectively and is detachably fixedly connected to the patient's leg, and is used to control the treatment mode of the therapeutic apparatus body and the Chinese medicine external application device;

The therapeutic instrument body is rotatably connected to the rehabilitation exercise device and is used to perform massage therapy and electrical stimulation therapy on the knee inserted into the therapeutic instrument body; the therapeutic instrument body includes a main body shell, a plurality of clamps, a motor, an electrical stimulation device and an air cushion;

The main body shell is a hemispherical structure with a hollow top and an annular air cushion connected to the bottom;

The clamping jaws are symmetrical along the axial center line of the main body shell, arranged in pairs inside the main body shell and above the air cushion;

The motor is connected to the clamping jaw via a lead screw, and the clamping jaw is driven to move by driving the lead screw to rotate. The motor is installed on the air cushion and is electrically connected to the control panel;

The electrical stimulation device is attached to the lower part of the annular air cushion and is electrically connected to the control panel;

The Chinese medicine external application device can be slidably mounted on the therapeutic instrument body and is used for performing Chinese medicine hot compress treatment on the knee joint. A sliding damper is provided between the Chinese medicine external application device and the therapeutic instrument body.

The rehabilitation exercise device is fixed to the patient's legs and feet and is used for performing rehabilitation exercise treatment on the patient's knee joint.

According to the above aspects and any possible implementation, an implementation is further provided.

The clamping jaw comprises a clamping block, a connecting block, a pressure sensor, a connecting piece and a clamping jaw motor;

The connecting block is longitudinally provided with a first through hole, a first rotating shaft is inserted into the first through hole, one end of the connecting piece is rotatably connected to the first rotating shaft, and the first rotating shaft sleeve is provided with a torsion spring;

The clamp block is longitudinally provided with a second through hole, a second rotating shaft is inserted into the second through hole, and the other end of the connecting piece is rotatably connected to the second rotating shaft;

The clamping jaw motor is arranged inside the connecting block and is used to push and rotate the clamping block;

The pressure sensor is attached to a side of the clamp block and electrically connected to the control panel, and is used to transmit the measured pressure data to the control panel; when the pressure data reaches a set value, the control panel controls the clamp motor to stop pushing and maintain the current thrust.

According to the aspects described above and any possible implementation method, an implementation method is further provided, wherein the clamp block includes a first clamp block and a second clamp block, the first clamp block and the second clamp block are connected by a transversely arranged third rotating shaft and a torsion spring is provided on the third rotating shaft sleeve, and are in a tightened state in a natural state.

According to the above aspects and any possible implementation, an implementation is further provided.

The rehabilitation exercise device comprises a base, a transverse connecting portion, a calf fixing device, a support plate, a first connecting rod, a second connecting rod and a third connecting rod;

The calf fixing device is fixedly installed on the transverse connecting part, and is used to fix the patient's calf; the two ends of the transverse connecting part are rotatably installed on the front and rear ends of the base through a group of first connecting rods and a group of second connecting rods, respectively, to form a four-bar mechanism; the support plate is fixedly installed on the group of first connecting rods along the longitudinal direction, and is used to fix and support the patient's feet; the two sides of the therapeutic instrument body are respectively rotatably installed on one end of the third connecting rod, and the other end of the third connecting rod is fixedly connected to the second connecting rod.

According to the above aspects and any possible implementation, there is further provided an implementation, wherein the electrical stimulation device includes an electrode sheet, an interface circuit, a microcontroller unit, a PWM switch circuit, a drive circuit, an isolation transformer, a feedback circuit, and a voltage-limiting and current-limiting protection circuit;

The microcontroller unit is electrically connected to the control panel via the interface circuit; the PWM switch circuit is electrically connected to the microcontroller unit for generating different waveforms;

The driving circuit is connected to the microcontroller unit and the PWM switch circuit respectively, and is used to amplify the received electrical signal;

The isolation transformer is electrically connected to the drive circuit, the feedback circuit and the electrode sheet respectively;

The feedback circuit is electrically connected to the microcontroller unit and is used to receive the voltage signal of the isolation transformer and feed it back to the microcontroller unit;

The voltage-limiting and current-limiting protection circuit is connected to the driving circuit and is used to perform voltage-limiting and current-limiting protection on the circuit.

According to the above aspects and any possible implementation, there is further provided an implementation, wherein the Chinese medicine external application device comprises a medicine permeation box and a Chinese medicine box, and the medicine liquid in the Chinese medicine box is connected to the medicine permeation box;

The drug permeation box comprises a plastic substrate of selectable specifications and a Chinese medicine sponge, a heat preservation film and a heating plate arranged in sequence from top to bottom inside the plastic substrate;

The upper and lower surfaces of the plastic substrate are both provided with a plurality of penetration holes, and the Chinese medicine in the Chinese medicine box enters into the plastic substrate through the penetration holes on the upper surface and is stored in the Chinese medicine sponge;

The heating plate is electrically connected to the control panel.

According to the above aspects and any possible implementation, an implementation is further provided.

A floating body is arranged inside the traditional Chinese medicine box. The floating body is located inside the traditional Chinese medicine box and is close to or in contact with the inner wall edge of the traditional Chinese medicine box.

According to the above aspects and any possible implementation, an implementation is further provided.

The heating plate includes a plurality of heating areas, and the plurality of heating areas are individually controlled by the control panel;

A temperature sensor is installed on the heating plate, and the temperature sensor is used to measure the temperature of the heating plate and transmit the temperature to the control panel.

The present disclosure discloses the following technical effects:

(1) The various mechanisms disclosed in the present invention cooperate with each other and select different functions for treatment according to the actual situation of the patient, which can personalize the settings and treatment functions according to the characteristics of the patient's disease, effectively improving the treatment effect;

(2) The present invention simulates the traditional Chinese medicine manipulation of vibrating the patella, scraping the patella, pushing the patella and pulling the patella through the clamping and transmission mechanism and combines it with traditional Chinese medicine in the hot compress function, so that the medicine can be replaced and added at the same time as the hot compress; moreover, the electrical stimulation function can be used to relieve fatigue, and the rehabilitation exercise mechanism can be used for sports rehabilitation. In addition, the therapeutic device can be personalized according to the patient's actual condition, ultimately achieving knee joint treatment.

It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present disclosure, nor are they intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. The accompanying drawings are used to better understand the present solution and do not constitute a limitation of the present disclosure. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, among which:

FIG1 shows a structural diagram of a portable four-in-one knee joint therapeutic apparatus according to an embodiment of the present disclosure;

FIG2 shows a main structure diagram of a portable four-in-one knee joint therapeutic apparatus according to an embodiment of the present disclosure;

FIG3 shows a structure diagram of a portable four-in-one knee joint therapeutic device jaw according to an embodiment of the present disclosure;

FIG4 shows a schematic diagram of the position of an electrical stimulation device of a portable four-in-one knee joint therapeutic apparatus according to an embodiment of the present disclosure;

FIG5 shows a schematic structural diagram of a portable four-in-one knee joint therapeutic apparatus electrical stimulation device according to an embodiment of the present disclosure;

FIG6 shows a schematic diagram of the structure of a portable four-in-one knee joint therapeutic apparatus for applying Chinese medicine according to an embodiment of the present disclosure; wherein FIG6(a) is a structural diagram of a Chinese medicine box, FIG6(b) is a structural diagram of a drug penetration box, and FIG6(c) is a structural diagram of the inside of the drug penetration box;

FIG7 shows a schematic structural diagram of a portable four-in-one knee joint therapeutic device heating sheet according to an embodiment of the present disclosure;

FIG8 shows a schematic structural diagram of a portable four-in-one knee joint therapeutic apparatus rehabilitation exercise device according to an embodiment of the present disclosure;

FIG9 shows a flowchart of a treatment method of a portable four-in-one knee joint treatment apparatus according to an embodiment of the present disclosure.

Description of reference numerals:

1. Control panel, 2. Therapeutic instrument body, 21. Main body shell, 22. Clamp, 221. Clamp block, 2211. First clamp block, 2212. Second clamp block, 222. Fixed block, 223. Pressure sensor, 224. Connecting plate, 23. Motor, 24. Electric stimulation device, 25. Air cushion, 3. Traditional Chinese medicine external application device, 31. Drug penetration box, 311. Plastic substrate, 312. Traditional Chinese medicine sponge, 313. Insulation film, 314. Heating plate, 32. Traditional Chinese medicine box, 4. Rehabilitation exercise device, 41. Base, 42. Calf fixing device, 43. Support plate.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

In order to make the above-mentioned objects, features and advantages of the present disclosure more obvious and understandable, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

As shown in FIG1 , this embodiment provides a portable four-in-one knee joint therapeutic device, including: a control panel 1, a therapeutic device body 2, a Chinese medicine external application device 3, and a rehabilitation exercise device 4;

The control panel 1 is electrically connected to the therapeutic apparatus body 2 and the Chinese medicine external application device 3 and is detachably fixedly connected to the patient's leg, and is used to control the treatment mode of the therapeutic apparatus body 2 and the Chinese medicine external application device 3;

The therapeutic apparatus body 2 is rotatably connected to the rehabilitation exercise device 4, and is used to perform massage therapy and electrical stimulation therapy on the knee inserted into the therapeutic apparatus body 2;

The Chinese medicine external application device 3 can be slidably mounted on the therapeutic instrument body 2, and is used for Chinese medicine hot compress treatment of the knee joint. A sliding damper is provided between the Chinese medicine external application device 3 and the therapeutic instrument body 2, and the installation position can be adjusted according to the individual kneecap height;

The rehabilitation exercise device 4 is fixed to the patient's legs and feet and is used for rehabilitation treatment of the patient's knee joint.

Specifically, as shown in FIG2 , the therapeutic apparatus body 2 includes a main body shell 21 , a plurality of clamping claws 22 , a motor 23 , an electrical stimulation device 24 and an air cushion 25 ;

The main body shell 21 is a hemispherical structure with a hollow top, and a ring-shaped air cushion 25 is connected to the bottom;

As shown in FIG3 , the clamping jaws 22 are symmetrical along the axial center line of the main housing 21 and are arranged in pairs in the main housing 21 and above the air cushion 25. The motor 23 is connected to the clamping jaws 22 through a lead screw, and the lead screw is driven to rotate to drive the clamping jaws 22 to move. The motor 23 is installed on the air cushion 25 and is electrically connected to the control panel 1.

The clamping jaw 22 includes a clamping block 221, a connecting block 222, a pressure sensor 223, a connecting piece 224 and a clamping jaw motor which are rotatably connected to each other; a first through hole is longitudinally arranged on the connecting block 222, a first rotating shaft is inserted in the first through hole, one end of the connecting piece 224 is rotatably connected to the first rotating shaft, and a torsion spring is sleeved on the first rotating shaft; a second through hole is longitudinally arranged on the clamping block 221, a second rotating shaft is inserted in the second through hole, the other end of the connecting piece 224 is rotatably connected to the second rotating shaft, and the clamping jaw motor is arranged inside the connecting block 222, and is used to push and rotate the clamping block 221;

The pressure sensor 223 is attached to one side of the clamp block 221 and is electrically connected to the control panel 1, and is used to transmit the measured pressure data to the control panel 1; when the pressure data reaches the set value, the control panel 1 controls the clamping jaw motor to stop pushing and maintain the current thrust;

Furthermore, the clamp block 221 includes a first clamp block 2211 and a second clamp block 2212, the first clamp block 2211 and the second clamp block 2212 are connected by a third rotating shaft arranged transversely, and a torsion spring is arranged on the third rotating shaft sleeve, and the clamp block 221 is in a tightened state in a natural state. When the clamp block 221 is to be in contact with the knee joint, the motor 23 drives the screw rod to rotate and drives the clamp jaw 22 to move toward the patella of the knee, and then the clamp jaw motor pushes the clamp block 221 to contact the patella, and the thrust causes the clamp block 221 to drive the connecting piece 224 to rotate around; when the pressing force reaches the set value, the clamp jaw motor stops pushing; at this time, the clamp jaw 22 clamps the patella. The clamp jaws 22 of this embodiment are arranged in pairs, and each pair of clamp jaws 22 is driven by a motor 23.

As shown in Figure 4, the electric stimulation device 24 is attached to the lower part of the annular air cushion 25 and is electrically connected to the control panel 1. As shown in Figure 5, the electric stimulation device 24 includes interconnected electrode sheets and interface circuits, a microcontroller unit, a PWM switching circuit, a drive circuit, an isolation transformer, a feedback circuit and a voltage-limiting and current-limiting protection circuit; the microcontroller unit is electrically connected to the control panel 1 through the interface circuit for adjusting the circuit current and voltage; the PWM switching circuit is electrically connected to the microcontroller unit for generating different waveforms; the drive circuit is respectively connected to the microcontroller unit and the PWM switching circuit for amplifying the received electrical signal; the isolation transformer is respectively electrically connected to the drive circuit, the feedback circuit and the electrode sheet for isolating the circuit from the human body and transmitting the voltage signal to the motor sheet and the feedback circuit; the feedback circuit is electrically connected to the microcontroller unit for receiving the voltage signal of the isolation transformer and feeding it back to the microcontroller unit; the voltage-limiting and current-limiting protection circuit is connected to the drive circuit for performing circuit voltage-limiting and current-limiting protection. The electrical stimulation part of this embodiment is designed to be miniaturized and intensive so that it can be used in homes. Two electrode sheets are installed at the bottom of the air cushion 25 inside the therapeutic device body 2; the two electrode sheets can be quickly released and pasted to the surface of the air cushion; the position of the electrode sheets can be adjusted according to actual needs.

As shown in FIG6 , the Chinese medicine external application device 3 includes a medicine penetration box 31 and a Chinese medicine box 32 placed therein. The medicine penetration box 31 includes a plastic substrate 311 of optional specifications and a Chinese medicine sponge 312, a heat preservation film 313 and a heating plate 314 arranged in sequence from top to bottom inside the plastic substrate 311; the top and bottom surfaces of the plastic substrate 311 are both provided with a plurality of penetration holes, and the Chinese medicine in the Chinese medicine box 32 enters the plastic substrate 311 through the penetration holes and is stored in the Chinese medicine sponge 312; There is a float, which is located in the Chinese medicine box 32 and is close to or in contact with the inner edge of the Chinese medicine box 32, aiming to limit the float to only be able to rise and fall vertically with the change of the liquid level of the Chinese medicine liquid, so that the float can play a role in suppressing the waves of the Chinese medicine liquid. When it is necessary to replenish the Chinese medicine liquid in the Chinese medicine box 32, the Chinese medicine box 32 needs to be taken out, and after replenishment, the Chinese medicine box 32 is completely placed in the drug permeation box 31. During the placement process, the acceleration change causes the Chinese medicine liquid to shake, and at this time, the float can well suppress the fluctuation of the Chinese medicine liquid.

The heating plate 314 is electrically connected to the control panel 1, and the heating plate 314 includes several heating areas, which are individually controlled by the control panel 1; a temperature sensor is installed on the heating plate 314, and the temperature sensor is used to measure the temperature of the heating plate and transmit it to the control panel 1; in this embodiment, the Chinese medicine sponge 32 on the drug permeation box 31 has a capacity of absorbing Chinese medicine liquid that is approximately twice that of the Chinese medicine filling box, so as to ensure that the drug penetrates into the sponge without dripping.

In this embodiment, as shown in FIG. 7 , the heating plate 314 is divided into a plurality of independent heating areas S1, heating area S2, heating area S3 and heating area S4, a total of four, each area includes two or three heating tubes, and different heating areas are connected to the control panel 1 in parallel to achieve the purpose of independent control of each heating area. An NTC temperature sensing probe is provided in each heating area to obtain the temperature of the current heating area and feedback control whether the current heating area is continuously heated. In this embodiment, the switch, working temperature and working time of each area heating and drying can be set separately, and the regional heating temperature can be kept constant between 38-40°C by the remote control thermostat and the NTC probe of each heating area set inside the control panel. When the knee temperature of area 2 is low, only area 2 can be set to heat through the remote control, and its heating temperature, time and timing can be set. In addition, the NTC probe can effectively sense the environment. When the ambient temperature is set to be higher than 40°C, the heating plate of the entire area will stop heating, so as to save electric energy and prevent patients from being scalded.

As shown in FIG8 , the rehabilitation exercise device 4 includes a base 41 , a transverse connection portion, a calf fixing device 42 , a support plate 43 , a first connecting rod, a second connecting rod and a third connecting rod;

The calf fixing device 42 is fixedly installed on the transverse connecting part, and is used to fix the patient's calf; the two ends of the transverse connecting part are rotatably installed on the front and rear ends of the base 41 through a group of first connecting rods and a group of second connecting rods, respectively, to form a four-bar mechanism; the support plate 43 is fixedly installed on a group of first connecting rods along the longitudinal direction, and is used to fix and support the patient's feet; the two sides of the therapeutic instrument body 2 are respectively rotatably installed on one end of the third connecting rod, and the other end of the third connecting rod is fixedly connected to the second connecting rod.

As shown in FIG9 , this embodiment also provides a treatment method of a portable four-in-one knee joint therapeutic apparatus, comprising the following steps:

S1: Install the therapeutic device body 2 and the control panel 1 on the patient's knees and legs respectively, and fix the patient's legs on the calf fixing device 42 and the feet on the support plate 43;

S2: Setting parameters and selecting treatment mode through control panel 1, and starting the treatment device;

S3: Start the corresponding treatment mode according to the selected function:

Mode 1: Knee joint massage: according to the set massage intensity and massage duration, the control panel 1 is controlled to send a massage instruction to the motor, the driving motor drives the lead screw to rotate so that the clamping jaw 12 is close to the human knee, and the driving clamping jaw motor drives the clamping block 221 to rotate to massage the patella of the human knee;

Mode 2: electrical stimulation therapy: according to the set electrical stimulation intensity and time, the control panel 1 is controlled to send an electrical stimulation instruction to the electrical stimulation device 24 to perform electrical stimulation therapy on the knee;

Mode 3: Chinese medicine external application treatment: Place the Chinese medicine external application device 3 with Chinese medicine liquid added into the therapeutic device 2, so that the Chinese medicine external application device 3 is attached to the human knee, and the control panel 1 is controlled to set the heating area and heating temperature according to the temperature of the human knee measured by the temperature sensor, so as to perform hot compress and Chinese medicine treatment on the human knee;

Mode 4: Rehabilitation exercise therapy: The rehabilitation exercise device 4 is driven by the human leg movement to complete the leg extension and varicose exercises

S4: Complete knee joint treatment, turn off power, and remove the knee joint treatment device from the patient's leg.

The various mechanisms of this embodiment cooperate with each other and select different functions for treatment according to the actual situation of the patient. It can perform personalized settings and treatment functions according to the characteristics of the patient's disease, effectively improving the treatment effect. In terms of manipulation functions, the clamping and transmission mechanisms are used to simulate the Chinese medicine manipulations of patella vibration, patella scraping, patella pushing and patella pulling, and the hot compress function is combined with traditional Chinese medicine to meet the needs of drug replacement and addition while hot compressing; moreover, fatigue is relieved through the electrical stimulation function, and sports rehabilitation is performed through the rehabilitation exercise mechanism. In addition, the therapeutic instrument can perform personalized function settings according to the patient's actual condition, ultimately achieving knee joint treatment.

It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should be aware that the present disclosure is not limited by the order of the actions described, because according to the present disclosure, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present disclosure.

It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

The above specific implementations do not constitute a limitation on the protection scope of the present disclosure. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims (8)

1. A portable four-in-one knee joint therapeutic device, characterized in that it comprises: a control panel (1), a therapeutic device body (2), a Chinese medicine external application device (3) and a rehabilitation exercise device (4); The control panel (1) is electrically connected to the therapeutic apparatus body (2) and the Chinese medicine external application device (3) respectively and is detachably fixedly connected to the patient's leg, and is used to control the treatment mode of the therapeutic apparatus body (2) and the Chinese medicine external application device (3); The therapeutic device body (2) is rotatably connected to the rehabilitation exercise device (4) and is used to perform massage therapy and electrical stimulation therapy on the knee that extends into the interior of the therapeutic device body (2); the therapeutic device body (2) comprises a main body shell (21), a plurality of clamping claws (22), a motor (23), an electrical stimulation device (24) and an air cushion (25); The main body shell (21) is a hemispherical structure with a hollow top, and a ring-shaped air cushion (25) is connected to the bottom; The clamping jaws (22) are symmetrically arranged along the axial center line of the main body shell (21), in pairs, inside the main body shell (21) and above the air cushion (25); The motor (23) is connected to the clamping jaw (22) via a lead screw, and drives the lead screw to rotate to drive the clamping jaw (22) to move. The motor (23) is installed on the air cushion (25) and is electrically connected to the control panel (1); The electrical stimulation device (24) is attached to the lower part of the air cushion (25) and is electrically connected to the control panel (1); The Chinese medicine external application device (3) is slidably mounted on the therapeutic apparatus body (2) and is used for performing Chinese medicine hot compress treatment on the knee joint; a sliding damper is provided between the Chinese medicine external application device (3) and the therapeutic apparatus body (2); The rehabilitation exercise device (4) is fixed to the patient's legs and feet and is used to perform rehabilitation exercise treatment on the patient's knee joint. 2. The portable four-in-one knee joint therapeutic device according to claim 1 is characterized in that: The clamping jaw (22) comprises a clamping block (221), a connecting block (222), a pressure sensor (223), a connecting sheet (224), and a clamping jaw motor; The connecting block (222) is provided with a first through hole in the longitudinal direction, a first rotating shaft is inserted into the first through hole, one end of the connecting piece (224) is rotatably connected to the first rotating shaft, and the first rotating shaft sleeve is provided with a torsion spring; The clamping block (221) is provided with a second through hole in the longitudinal direction, a second rotating shaft is inserted into the second through hole, and the other end of the connecting piece (224) is rotatably connected to the second rotating shaft; The clamping jaw motor is arranged inside the connecting block (222) and is used to push and rotate the clamping block (221); The pressure sensor (223) is attached to a side surface of the clamping block (221) and is electrically connected to the control panel (1) for transmitting measured pressure data to the control panel (1); when the pressure data reaches a set value, the control panel (1) controls the clamping jaw motor to stop pushing and maintain the current thrust. 3. The portable four-in-one knee joint therapeutic device according to claim 2 is characterized in that the clamping block (221) comprises a first clamping block (2211) and a second clamping block (2212), the first clamping block (2211) and the second clamping block (2212) are connected by a third horizontally arranged rotating shaft and a torsion spring is provided on the third rotating shaft sleeve, and the first clamping block (2211) and the second clamping block (2212) are in a tightened state in a natural state. 4. The portable four-in-one knee joint therapeutic device according to claim 1 is characterized in that: The rehabilitation exercise device (4) comprises a base (41), a transverse connecting portion, a calf fixing device (42), a support plate (43), a first connecting rod, a second connecting rod and a third connecting rod; The calf fixing device (42) is fixedly mounted on the transverse connecting portion and is used to fix the patient's calf; the two ends of the transverse connecting portion are rotatably mounted on the front and rear ends of the base (41) via a group of first connecting rods and a group of second connecting rods, respectively, to form a four-bar linkage; the support plate (43) is fixedly mounted on the group of first connecting rods in the longitudinal direction and is used to fix and support the patient's foot; the two sides of the therapeutic device body (2) are rotatably mounted on one end of a third connecting rod, and the other end of the third connecting rod is fixedly connected to the second connecting rod. 5. The portable four-in-one knee joint therapeutic apparatus according to claim 1, characterized in that the electrical stimulation device (24) comprises an electrode sheet, an interface circuit, a microcontroller unit, a PWM switch circuit, a drive circuit, an isolation transformer, a feedback circuit and a voltage-limiting and current-limiting protection circuit; The microcontroller unit is electrically connected to the control panel (1) via the interface circuit; the PWM switch circuit is electrically connected to the microcontroller unit and is used to generate different waveforms; The driving circuit is connected to the microcontroller unit and the PWM switch circuit respectively, and is used to amplify the received electrical signal; The isolation transformer is electrically connected to the drive circuit, the feedback circuit and the electrode sheet respectively; The feedback circuit is electrically connected to the microcontroller unit and is used to receive the voltage signal of the isolation transformer and feed it back to the microcontroller unit; The voltage-limiting and current-limiting protection circuit is connected to the driving circuit and is used to perform voltage-limiting and current-limiting protection on the circuit. 6. The portable four-in-one knee joint therapeutic apparatus according to claim 1, characterized in that the Chinese medicine external application device (3) comprises a medicine permeation box (31) and a Chinese medicine box (32), and the medicine liquid in the Chinese medicine box (32) is connected to the medicine permeation box (31); The drug permeation box (31) comprises a plastic substrate (311) of selectable specifications, and a Chinese medicine sponge (312), a heat preservation film (313), and a heating plate (314) arranged in sequence from top to bottom inside the plastic substrate (311); The upper and lower surfaces of the plastic substrate (311) are both provided with a plurality of penetration holes, and the Chinese medicine in the Chinese medicine box (32) enters the plastic substrate (311) through the penetration holes on the upper surface and is stored in the Chinese medicine sponge (312); The heating plate (314) is electrically connected to the control panel (1). 7. The portable four-in-one knee joint therapeutic device according to claim 6, characterized in that: A floating body is provided inside the Chinese medicine box (32), and the floating body is located inside the Chinese medicine box (32) and is close to or in contact with the edge of the inner wall of the Chinese medicine box (32). 8. The portable four-in-one knee joint therapeutic device according to claim 7, characterized in that: The heating plate (314) comprises a plurality of heating areas, and the plurality of heating areas are individually controlled by the control panel (1); A temperature sensor is installed on the heating plate (314), and the temperature sensor is used to measure the temperature of the heating plate and transmit the temperature to the control panel (1).