CN209347577U - A device for preventing and treating foot vein thrombosis - Google Patents

Abstract

The utility model discloses a foot venous thrombosis prevention device, which belongs to the field of medical equipment. The device comprises a foot binding bag, a pressurizing device, a gas path connecting pipe, a heating device, an external electric wire and a prevention and treatment instrument. The utility model uses a pressurizing device to deeply pressurize and relax the blood vessels of the human foot, and at the same time uses a heating device to strengthen blood circulation. By presetting a reasonable pressurization value, pressurization frequency and heating temperature, it can effectively avoid and slow down the blood vessels of the deep veins. Thrombus formation, the device is easy to wear and has reliable performance, and is suitable for users of different foot sizes, especially the acupoint impact points designed on the soles of the feet can effectively improve the user experience.

Description

A device for preventing and treating foot vein thrombosis

technical field

The utility model belongs to the field of medical equipment, in particular to a foot vein thrombosis prevention and treatment device.

Background technique

Deep venous thrombosis (deep venous thrombosis, DVT) is a common clinical disease, especially foot DVT. DVT can threaten the patient's life, and its sequelae seriously affect the patient's ability to work, and even become disabled. In the United States, DVT embolism is the third most common vascular disease, after coronary heart disease and hypertension. In my country, DVT embolism is also a common and frequently-occurring disease.

Among them, foot venous thrombosis is a common complication in patients during surgery and long-term bedridden patients, and it is also more likely to occur in healthy people who sit and lie down for a long time. Foot venous thrombosis can affect the motor function of the limbs, leading to foot swelling, varicose veins, and ulcers. Thrombus detachment can induce embolism, such as pulmonary embolism, cerebral infarction, and infarction of other organs. Severe cases can be fatal. In order to avoid the occurrence of embolism, it is very important to prevent the formation of foot vein thrombosis.

The prevention and treatment of venous thromboembolism generally adopts drug therapy and physical therapy, and surgical therapy is adopted when necessary. Drug therapy and surgical therapy have large side effects, high risk, high treatment cost, and poor effect; there are many methods of physical therapy, among which Existing technologies include: electrode signal stimulation using sound current or direct current as a treatment source; high-frequency alternating homogeneous strong magnetic field or polymorphic strong gyromagnetic field and dynamic magnetic field interference therapy; ultrasonic generation of mechanical oscillations and thermal effects, biological effects Thrombus crushing method; fluctuating spectrum therapy; electrolytic resonance method; bioelectricity combined with music therapy; nano-laser therapy; health care preventive medical elastic stocking method; intermittent air pressure device method, etc. See Chinese utility model patent "Meridian Painless Treatment Apparatus" (application number: 87101313, application date: 1987-03-12), Chinese utility model patent "blood circulation aid" (application number: 90103434.1, application date: 1990-05- 18) What is disclosed is a therapeutic instrument for promoting venous blood circulation. Its working principle is that the pulsating compressed air generated by the instrument is transported into the air bag wrapped around the affected part, which periodically squeezes the affected part and accelerates the venous blood flow. , enhance blood circulation, this instrument can prevent or treat lower extremity venous diseases for long-term standing or walking workers, and help to restore the vitality of athletes' limbs, but the utility model does not point out the specific geometric shape of the air bag and how to increase the effect of the air bag The rate of inflation and deflation can achieve problems such as increasing the frequency of extrusion and relaxation of the affected part. Chinese patent ZL201410139386.4 discloses a step-by-step pressurization and adjustable pressure postoperative compression dressing device for limbs, which promotes blood circulation by stepwise step-by-step pressurization of the limbs. However, the device is cumbersome to operate when realizing step-by-step pressurization and pulse pressurization, and it is not suitable for the elderly to operate and use at home; and the device needs to be equipped with different models according to different body postures of patients to fit the surface of the limbs, and the scope of application is small. Medical institutions need to face patients of various postures, and the investment cost is extremely high; in addition, the device is an integrated structure formed by connecting multiple airbags sequentially. It cannot be wrapped, and it is mostly suitable for limbs without trauma. In the prior art, especially in the relevant documents related to deep vein thrombosis treatment equipment, there is no record of foot vein thrombosis prevention and treatment devices combined with pressurized airbags and infrared heating schemes, leaving a technical gap in this field in China.

Utility model content

In view of this, the utility model uses a pressurizing device to deeply pressurize and relax the blood vessels of the human foot, and at the same time uses a heating device to strengthen blood circulation. By presetting a reasonable pressurization value, pressurization frequency and heating temperature, it can effectively avoid And slow down the formation of deep vein thrombosis, the device is easy to wear, reliable performance, and can be suitable for users of different sizes, especially the acupoint impact points designed on the soles of the feet can effectively improve the user experience.

The utility model solves the above problems by the following technical means:

A foot venous thrombosis prevention device is characterized in that it includes a foot binding bag, a pressurizing device, an air circuit connection pipe, a heating device and an external electric wire, wherein: the foot binding bag is composed of a wrapping part and a rear fixing part Composed with the midfoot fixing part: the wrapping part can wrap the feet of different sizes, the rear foot fixing part is arranged on the rear side of the wrapping part for tightening the wrapping part at the heel, and the midfoot fixing part is arranged on The front side of the wrapping part is used to tighten the wrapping part at the instep; the pressurizing device is composed of an airbag, an external sponge core, an internal sponge core and acupoint impact points: the airbag is arranged on the sole of the foot by welding the sealing line In the interlayer, the outer sponge core is arranged in the interlayer where the wrapping part is located on the instep through welding sealing lines, the inner sponge core is filled inside the airbag, and the acupuncture point impact points are set on the inner surface of the wrapping part on the sole of the foot; The gas circuit connecting pipe is composed of a trachea and a CPC male connector. One end of the trachea is connected to the driving gas source through the CPC male connector, and the other end of the trachea is connected to the inside of the airbag; the heating device is arranged at the wrapping part near the foot. The interlayer includes a heating cloth and a temperature sensor, the heating cloth is a far-infrared heating cloth, and the temperature sensor is used to collect the actual temperature of heating; the external electric wire includes a DC power line and a temperature signal line, and the DC power The wire is used to provide power to the heating cloth, and the temperature signal wire is used to transmit the real-time signal of the temperature sensor to realize the closed-loop control of the temperature.

Preferably, the foot binding bag is made of two layers of non-woven fabrics sewn with sewing threads, and the airbag is made of two layers of TPU films sealed with welding sealing lines.

Preferably, the acupoint impact points include the insomnia acupoint, the Yongquan acupoint and the Lineiting acupoint, and the insomnia acupoint, the Yongquan acupoint and the Lineiting acupoint are made of silica gel and magnets And it is fixed on the inner surface of the wrapping part contacting the sole by bonding.

Preferably, the rear-foot fixing part is composed of an elastic band and a first velcro, one end of the elastic band is set at a position near the heel of the wrapping part, and the first velcro is set at the other end of the elastic band for bonding The outer surface of the package.

Preferably, the mid-foot fixing part is composed of a first strap, a second strap, a second Velcro and a third Velcro, and one end of the first strap and the second strap are respectively arranged on the package The position near the instep, the second velcro is arranged on the other end of the first strap for bonding the outer surface of the wrapped part, and the third velcro is arranged on the other end of the second strap for Glue the outer surface of the package.

Preferably, it also includes a prevention instrument for driving and controlling work, and the prevention instrument includes a housing, a control panel, a control board, a vacuum diaphragm pump, a cylinder, an air circuit converter, a solenoid valve, an air outlet, an air inlet, A pressure sensor and a power supply module, wherein: the housing is a cuboid hollow structure; the control panel is arranged on the front of the housing and includes a display screen for information display and a keyboard for information interaction; For power conversion, signal processing, heating closed-loop control and pressurization closed-loop control, the control board is respectively connected to the control panel, vacuum diaphragm pump, solenoid valve, pressure sensor, power module and temperature sensor; the vacuum diaphragm pump receives the control board through the circuit The drive signal of the vacuum diaphragm pump, the output port of the vacuum diaphragm pump is connected to the air inlet port of the cylinder through the pipeline, and the air outlet port connected to the cylinder is converted into the left foot air circuit and the right foot air circuit through the air circuit converter, and the number of the solenoid valves is Two are respectively set at the air outlet of the left foot air circuit and the right foot air circuit; the pressure sensor is arranged on the pipeline of the air outlet to detect the pressure of the air circuit; the power module is an AC-DC module used to convert 220V alternating current into 12V DC.

Preferably, the control mainboard includes a single-chip microcomputer, a power supply circuit, a vacuum pump drive circuit, a solenoid valve drive circuit, a temperature acquisition circuit, a pressure acquisition circuit, a keyboard circuit, a display circuit, a heating drive circuit and an RTC clock circuit, wherein: the power supply circuit The input end of the power supply module is connected to the power unit inside the power supply circuit, and the power supply circuit is a DC-DC circuit for converting 12V direct current into 3.3V and 5.0V direct current; the single-chip microcomputer drives the circuit through a vacuum pump To control the work of the vacuum diaphragm pump, the single-chip microcomputer controls the work of the solenoid valve through the solenoid valve driving circuit, and the single-chip microcomputer controls the heating cloth to work through the heating driving circuit; Real-time feedback; the single-chip microcomputer is connected to the keyboard through the keyboard circuit, and the single-chip microcomputer is connected to the display screen through the display circuit; the RTC clock circuit is connected to the single-chip microcomputer and provides an accurate time reference for the device.

A foot vein thrombosis prevention and treatment device of the utility model has the following beneficial effects:

(1) This device is equipped with an air bag on the sole of the foot bag, and the inside of the air bag is connected with a driving air source. By controlling the driving air source, the foot can be pressurized and relaxed. This pressurization and relaxation scheme can ensure that the venous blood Fast reflow, the upper and lower relative arrangement of the inner sponge core and the outer sponge core can also significantly improve the user's comfort.

(2) This device adopts a heating device, specifically, a far-infrared heating cloth can be used to heat the user's feet to achieve the purpose of strengthening blood circulation.

(3) The foot binding bag of this device adopts a wrap-around design, which can adapt to feet of different sizes. The user can easily wear and disassemble the device through the middle fixing part and the rear fixing part.

(4) The prevention device of this device uses a temperature sensor and a pressure sensor to form a closed-loop control. The temperature sensor can sense the ambient temperature and automatically turn on the heating function. The pressure sensor can detect whether the user is wearing it correctly on the one hand, and on the other hand, it can also detect the user's pulse rate. , to achieve pulse synchronous pressurization, while accelerating venous blood return, it does not affect arterial blood supply.

(5) When the control instrument of this device realizes the closed-loop detection of temperature and pressure, it adopts an improved debounce filtering algorithm, which combines two algorithms of median filtering and arithmetic mean filtering. In the actual measurement process, the Algorithms can eliminate the influence of chance factors and interfering signals.

(6) The preventive device includes vacuum diaphragm pumps, cylinders, solenoid valves and other devices, and has millisecond-level pressurization capabilities, and the pressurization time does not exceed 200 milliseconds. This form of pulse pressurization can effectively improve the effect of treatment and rehabilitation.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is a schematic diagram of the wearing structure of the utility model foot binding bag;

Fig. 2 is a schematic diagram of the unfolded structure of the foot binding bag of the present invention;

Fig. 3 is a schematic diagram of the internal structure of the foot binding bag of the present invention;

Fig. 4 is the front structure schematic diagram of the utility model control instrument;

Fig. 5 is the side structure schematic diagram of the utility model control instrument;

Fig. 6 is a schematic diagram of the connection between the prevention and control instrument of the present invention and the foot binding bag;

Fig. 7 is the internal circuit connection schematic diagram of the utility model control instrument;

Fig. 8a and Fig. 8b are the schematic diagrams of the motor driving circuit in the utility model;

Fig. 9 is a schematic diagram of the drive circuit of the heater in the utility model;

Fig. 10 is a schematic diagram of the driving circuit of the solenoid valve in the utility model;

Fig. 11 is a schematic diagram of the pressure sensor circuit in the utility model;

Fig. 12 is a schematic diagram of the temperature acquisition circuit in the utility model;

Fig. 13 is a schematic diagram of a 3.3V power supply circuit in the utility model;

Fig. 14 is a schematic diagram of a 5.0V power supply circuit in the utility model;

Fig. 15 is a schematic diagram of the interface circuit of the display screen in the utility model;

Fig. 16 is a schematic diagram of the keyboard interface circuit in the present invention.

In the figure, 1-foot binding bag, 101-wrapping part, 102-foot rear fixing part, 103-foot mid-fixing part, 1021-elastic band, 1022-first Velcro, 1031-first strap, 1032- The second strap, 1033-second velcro, 1034-third velcro, 2-pressurizing device, 201-airbag, 202-external sponge core, 203-internal sponge core, 204-acupoint impact point, 205 -Welding sealing line, 2041-Insomnia point, 2042-Yongquan point, 2043-Li Nei Ting point, 3-air connection pipe, 301-trachea, 302-CPC male connector, 4-heating device, 401-heating cloth, 402-temperature sensor, 5-external wire, 6-control instrument, 601-housing, 602-control panel, 603-control board, 604-vacuum diaphragm pump, 605-cylinder, 606-air circuit conversion Device, 607-solenoid valve, 608-air outlet, 609-air inlet, 610-pressure sensor, 611-power module, 612-circuit, 613-pipeline, 6021-display screen, 6022-keyboard, 6031-single chip microcomputer, 6032-power supply circuit, 6033-vacuum pump drive circuit, 6034-solenoid valve drive circuit, 6035-temperature acquisition circuit, 6036-pressure acquisition circuit, 6037-keyboard circuit, 6038-display circuit, 6039-heating drive circuit, 6040-RTC clock circuit.

Detailed ways

In describing the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal" , "Top", "Bottom", "Inner", "Outer", "Edge", "Middle" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the practical Novel and simplified descriptions do not indicate or imply that the device or element referred to must have a specific orientation, as well as a specific orientation configuration and operation, and therefore should not be construed as limiting the utility model. The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

The utility model will be described in detail below in conjunction with the accompanying drawings.

Implementation one

As shown in Figure 1 and Figure 2, a foot vein thrombosis prevention device, which can be worn on the user's foot, provides pulse pressure for the foot, has functions such as extrusion, relaxation, and heating, and specifically includes a foot binding bag 1 , pressurizing device 2, gas circuit connecting pipe 3, heating device 4 and external wire 5, the foot binding bag 1 is made of two layers of non-woven fabrics, and the pressurized airbag 201 in the pressurizing device 2 is two layers of TPU film Sealed by welding the sealing line 205, in this embodiment, the foot binding bag 1 has a roughly triangular structure.

Specifically as shown in Figure 2, the foot binding bag 1 is composed of a wrapping part 101, a rear fixing part 102 and a midfoot fixing part 103: the wrapping part 101 can wrap feet of different sizes, and the rear fixing part 102 is arranged on the wrapping part The rear side of 101 is used to tighten up the wrapping part 101 at the heel place, and the mid-foot fixing part 103 is arranged on the front side of the wrapping part 101 and is used to tighten up the wrapping part 101 at the instep place, wherein, the foot binding bag 1 is made of two layers without The woven fabric is stitched with sewing thread, the airbag 201 is made of two layers of TPU film sealed by welding sealing line 205, the rear fixing part 102 is composed of an elastic band 1021 and a first Velcro 1022, and one end of the elastic band 1021 is set on the wrapping part 101 near the position of the heel, the first velcro 1022 is arranged on the other end of the elastic band 1021 for bonding the outer surface of the wrapping part 101, the midfoot fixing part 103 is composed of the first strap 1031, the second strap 1032, the second The Velcro 1033 and the third Velcro 1034 are composed, and one end of the first strap 1031 and the second strap 1032 are respectively arranged on the wrapping part 101 near the instep, and the second Velcro 1033 is arranged on the first strap 1031 The other end of the second strap 1032 is used for bonding the outer surface of the wrapping part 101 , and the third Velcro 1034 is arranged on the other end of the second strap 1032 for bonding the outer surface of the wrapping part 101 .

During specific use, the user first puts the foot on the wrapping part 101, then wraps the left fan of the wrapping part 101 in FIG. 1033 and the third Velcro 1034 bond the middle fixing part 103 on the outer surface of the wrapping part 101, tighten the non-woven fabric of the instep and sole; at this time, pull the rear fixing part 102 from one side to the other The non-woven fabric on the side, tightening the heel and the sole of the foot, this way of wearing can be flexibly adapted to feet of different sizes.

Specifically, as shown in Figures 2 and 3, the pressurizing device 2 is composed of an airbag 201, an external sponge core 202, an internal sponge core 203, and an acupuncture point impact point 204: the airbag 201 is arranged on the wrapping part 101 at the bottom of the foot through a welding sealing line 205. In the interlayer, the outer sponge core 202 is arranged in the interlayer where the wrapping part 101 is located on the instep through the welding sealing line 205, the inner sponge core 203 is filled inside the airbag 201, and the acupoint impact points 204 are arranged on the inner surface of the wrapping part 101 located on the sole of the foot; The road connecting pipe 3 is composed of a gas pipe 301 and a CPC male connector 302. One end of the gas pipe 301 is connected to the driving gas source through the CPC male connector 302, and the other end of the gas pipe 301 is connected to the inside of the airbag 201.

Wherein, the acupoint impact points 204 include the insomnia acupoints 2041, the Yongquan acupoints 2042 and the Lineiting acupoints 2043. It is made and fixed on the inner surface of the wrapping part 101 contacting the sole of the foot by bonding. When making it, the silicone base is first fixed on the inner surface of the wrapping part 101 contacting the sole of the foot by bonding, and then the magnet is bonded. Secured inside the silicone base.

In actual work, the gas circuit connecting pipe 3 is composed of a gas pipe 301 and a CPC male connector 302. One end of the gas pipe 301 is connected to the driving gas source through the CPC male connector 302. The driving gas source can be a vacuum diaphragm pump, and the other end of the gas pipe 301 is connected to the third stage. Inside the airbag 205 .

Further referring to Fig. 1 to Fig. 3, heating device 4 is arranged in the interlayer of wrapping part 101, and comprises heating cloth 401 and temperature sensor 402, and heating cloth 401 is far-infrared heating cloth, and temperature sensor 402 is used for collecting the actual temperature of heating, The external wire 5 includes a DC power line and a temperature signal line. The DC power line is used to provide power to the heating cloth 401, and the temperature signal line is used to transmit the real-time signal of the temperature sensor 402 to realize closed-loop control of temperature.

It should be noted that the foot vein thrombosis prevention and treatment device in this embodiment includes two groups of foot binding bags 1, pressurization device 2, air circuit connection pipe 3, heating device 4 and external electric wire 5, and the two groups of equipment are used for Left and right feet.

Based on the above-mentioned foot binding bag 1, pressurization device 2, gas path connection pipe 3, heating device 4 and external wire 5, this embodiment adopts a control method for a foot vein thrombosis prevention device, which specifically includes the following steps:

C1 power on;

The C2 foot vein thrombosis prevention device waits for the user to select the working mode, which includes treatment mode, rehabilitation mode and leisure mode;

C3 When the working mode is determined to be the treatment mode, the working time of the foot vein thrombosis prevention and treatment device is set to 1.5h, where:

In the first stage of 0-30mins, heat the heating cloth to 32-36°C, and use a pressurizing device to give the foot a pressure of 24-28mmHg, and the pressurization frequency is 0.28-0.34Hz. Among them, the preferred temperature is 34°C and 26 mmHg pressure;

The second stage is 30-60mins, heating the heating cloth to 36-39°C, using a pressurizing device to give the foot a pressure of 30-35mmHg, and the pressing frequency is 0.4-0.5Hz, among which, the preferred temperature is 38°C and 35 mmHg pressure;

The third stage is 60-90mins, heating the heating cloth to 39-42°C, using a pressurizing device to give the foot a pressure of 40-45mmHg, and the pressing frequency is 0.5-1Hz, among which, the preferred temperature is 40°C and 43 mmHg pressure;

C4 When the working mode is determined to be rehabilitation mode, the working time of the foot vein thrombosis prevention and treatment device is set to 1.5h, where:

In the first stage of 0-20mins, heat the heating cloth to 32-36°C, use a pressure device to give the foot a pressure of 20-25mmHg, and the pressure frequency is 0.28-0.34Hz, and the preferred temperature is 35°C and 25 mmHg pressure;

The second stage is 20-60mins, heating the heating cloth to 36-39°C, using a pressure device to give the foot a pressure of 30-35mmHg, the pressure frequency is 0.5-0.85Hz, and the preferred temperature is 38°C and 35 mmHg pressure;

The third stage is 60-90mins, heating the heating cloth to 36-39°C, using a pressure device to give the foot a pressure of 25-30mmHg, and the pressure frequency is 0.34-0.5Hz, among which, the preferred temperature is 38°C and 30mmHg pressure;

C5 When the working mode is determined to be the leisure mode, the working time of the foot vein thrombosis prevention device is set to 1h, the heating cloth is heated to 32-36°C, and the pressure device is used to give the foot a pressure of 30-35mmHg, and the frequency of the pressure is 0.34-0.5Hz, wherein the preferred temperature is 35°C and pressure 32mmHg.

C6 end of working hours;

C7 shuts down.

It should be noted that this control method includes three working modes: treatment mode, rehabilitation mode and leisure mode. The treatment mode is aimed at patients during surgery and long-term bedridden patients. In the treatment mode, the heating temperature, pressurization value and pressurization frequency gradually increase; the rehabilitation mode is aimed at postoperative patients, and the heating temperature, pressurization value and pressurization frequency in the rehabilitation mode will have a reasonable cycle; the leisure mode is aimed at people who sit and lie down for a long time, and this mode uses reasonable heating temperature and pressurization Numerical value and pressurization frequency, the above control methods all act on the left and right feet synchronously.

Implementation two

On the basis of the equipment described in Embodiment 1, this embodiment also includes a prevention instrument 6 for driving and controlling work, as shown in Figure 4, Figure 5 and Figure 6, the prevention instrument 6 includes a housing 601, a control panel 602 , control board 603, vacuum diaphragm pump 604, cylinder 605, air circuit converter 606, solenoid valve 607, air outlet 608, air inlet 609, pressure sensor 610 and power supply module 611. The preventive equipment worn by the left and right feet is connected to the same preventive device 6, and only the foot binding bag 1 for the right foot is shown in Fig. 6 .

Specifically, as shown in FIG. 4 , the casing 601 is a rectangular parallelepiped hollow structure; the control panel 602 is arranged on the front of the casing 601 and includes a display screen 6021 for information display and a keyboard 6022 for information interaction.

As shown in Figure 5, the control board 603 is used for power conversion, signal processing, heating closed-loop control and pressurization closed-loop control. 611 and temperature sensing 402 .

It should be noted that this preventive device uses a temperature sensor and a pressure sensor to form a closed-loop control. The temperature sensor can sense the ambient temperature and automatically turn on the heating function. Frequency, realize pulse synchronous pressurization, accelerate venous blood return, while not affecting arterial blood supply.

Among them, the vacuum diaphragm pump 604 receives the driving signal of the control board 603 through the circuit 612, the output port of the vacuum diaphragm pump 604 is connected to the air inlet 609 of the cylinder 605 through the pipeline 613, and the air outlet connected to the cylinder 605 is converted into For the left foot air circuit and the right foot air circuit, the number of electromagnetic valves 607 is two, and they are respectively arranged at the air outlet 608 of the left foot air circuit and the right foot air circuit; the pressure sensor 610 is arranged on the pipeline 613 of the air outlet 607 for detecting the air circuit Pressure; the power supply module 611 is an AC-DC module for converting 220V alternating current into 12V direct current.

During specific implementation, an acousto-optic alarm device can be added to the control instrument 6 .

It should be noted that, in this embodiment, when the control instrument realizes the closed-loop detection of temperature and pressure, it adopts an improved anti-vibration filtering algorithm, which combines two algorithms of median value filtering and arithmetic mean filtering. In the process, the algorithm can eliminate the influence of accidental factors and interference signals. The specific steps are as follows:

A1 performs limiting processing on the sampled value, remembering that the current sampled value is S1, the last effective sampled value is S0, and the maximum deviation allowed between two samples is A;

A2 calculates the difference between S1 and S0, and compares the difference with A;

A3 If the difference between S1 and S0 is not greater than A, then S0=S1;

A4 If the difference between S1 and S0 is greater than A, S1 is invalid, and S0 continues to be maintained;

The sampling value is obtained through N times of continuous sampling, and the specific steps are as follows:

B1 continuously samples the measured value N times;

B2 removes the maximum and minimum values in N division queues;

B3 calculates the arithmetic mean of the remaining N-2 data as the sampling value.

Referring specifically to Fig. 7, the control main board 603 in the second embodiment includes a single chip microcomputer 6031, a power supply circuit 6032, a vacuum pump drive circuit 6033, a solenoid valve drive circuit 6034, a temperature acquisition circuit 6035, a pressure acquisition circuit 6036, a keyboard circuit 6037, and a display circuit 6038 , heating drive circuit 6039 and RTC clock circuit 6040.

It should be noted that in this embodiment, the form of an isolation circuit plus a driving circuit is adopted, as shown in Figure 8a and Figure 8b, the isolation circuit uses a PS2502L-1 chip, the driving circuit uses a MAX14874 chip, and the microcontroller 6031 is driven by a vacuum pump. The circuit 6033 controls the vacuum diaphragm pump 604 to work. As shown in Figure 9, the single-chip microcomputer 6031 controls the heating cloth 401 to work through the heating drive circuit 6039, and the single-chip microcomputer controls the current in the heating cloth 401 to be turned on or off. Specifically, PID adjustment can be used to achieve different heating temperatures. This embodiment adopts PS2502L-1-A chip. As shown in FIG. 10 , the single chip microcomputer 6031 controls the operation of the solenoid valve 607 through the solenoid valve drive circuit 6034 , and this embodiment adopts the PS2502L-1 chip. As shown in FIG. 11 , the single-chip microcomputer 6031 obtains the real-time feedback of the pressure sensor 610 through the pressure acquisition circuit 6036 , and the MPVX5100GC6U type pressure sensor is used in this embodiment. As shown in FIG. 12 , the single-chip microcomputer 6031 obtains the real-time feedback of the temperature sensor 402 through the temperature acquisition circuit 6035 , and the PESD5V0S2UT type temperature sensor is used in this embodiment. As shown in Figure 13 and Figure 14, the input end of the power supply circuit 6032 is connected to the power supply module 611, and the output end of the power supply circuit 6032 is connected to the power consumption unit inside the device. The power supply circuit 6032 is a DC-DC circuit for converting 12V direct current into 3.3 V and 5.0V DC. Specifically, Fig. 13 shows that the 3.3V conversion circuit uses the MAX5024T chip, and Fig. 14 shows that the 5.0V conversion circuit uses the MAX5024L chip. As shown in FIG. 15 and FIG. 16 , the single-chip microcomputer 6031 is connected to the display screen 6021 through the display circuit 6038 ; the single-chip microcomputer 6031 is connected to the keyboard 6022 through the keyboard circuit 6037 . The RTC clock circuit 6040 is connected to the microcontroller 6031 and provides an accurate time reference for the device.

Based on the above-mentioned foot binding bag 1, pressurization device 2, gas path connecting pipe 3, heating device 4, external wire 5 and prevention and control device 6, the following control steps are adopted in this embodiment:

D1 power on;

The D2 pressure sensor collects the current internal pressure of the foot binding bag;

D3 If the current internal pressure of the foot binding bag is less than 10mmHg, the prevention device will judge that the user is not wearing the foot vein thrombosis prevention device normally, and the prevention device will prompt the user through the display screen;

D4 If the current internal pressure of the foot binding bag is greater than or equal to 10mmHg, the prevention device will judge that the user has normally worn the foot vein thrombosis prevention device, the temperature sensor will start to collect the current ambient temperature, and the pressure sensor will start to detect the user's pulse rate;

D5 If the current ambient temperature is lower than 28°C, the prevention device will judge it as a low-temperature environment, and the foot vein thrombosis prevention device waits for the user to select a working mode. The working modes include treatment mode, rehabilitation mode and leisure mode:

When the working mode is determined to be the treatment mode, the working time of the foot vein thrombosis prevention device is set to 1.5h, where:

In the first stage of 0-20mins, heat the heating cloth to 32-36°C, use a pressurizing device to give the foot a pressure of 30-35mmHg, and the pressurization frequency is the user's pulse rate. Preferably, the heating temperature is 34°C, and the pressure value is 32mmHg;

The second stage is 15-45mins, heat the heating cloth to 36-39°C, use the pressurization device to give the foot a pressure of 35-40mmHg, and the pressurization frequency is the pulse rate of the user. Preferably, the heating temperature is 38°C, and the pressure value is 38mmHg;

The third stage is 45-90mins, heat the heating cloth to 39-42°C, use the pressurization device to give the foot a pressure of 36-42mmHg, the pressurization frequency is the pulse rate of the user, preferably, the heating temperature is 40°C, and the pressure value is 42mmHg;

When the working mode is determined to be rehabilitation mode, the working time of the foot vein thrombosis prevention device is set to 1.5h, where:

In the first stage of 0-30mins, heat the heating cloth to 36-39°C, use a pressurizing device to give the foot a pressure of 25-30mmHg, and the pressurization frequency is the pulse rate of the user. Preferably, the heating temperature is 38°C, and the pressure is 30mmHg;

The second stage is 30-70mins, heat the heating cloth to 36-39°C, use the pressurization device to give the foot a pressure of 30-35mmHg, the pressurization frequency is the user's pulse rate, preferably, the heating temperature is 38°C, and the pressure value is 34mmHg;

The third stage is 70-90mins, heat the heating cloth to 36-39°C, use the pressurization device to give the foot a pressure of 25-30mmHg, the pressurization frequency is the pulse rate of the user, preferably, the heating temperature is 38°C, and the pressure value is 30mmHg;

When the working mode is determined to be the leisure mode, the working time of the foot vein thrombosis prevention device is set to 1-2h, the heating cloth is heated to 36-38°C, and the pressure device is used to give the foot a pressure of 25-30mmHg, and the pressure frequency is the pulse rate of the user, preferably, the heating temperature is 38°C, and the pressure value is 30mmHg;

D6 If the current ambient temperature is higher than or equal to 28°C, the prevention device will judge it as a high-temperature environment, and the foot vein thrombosis prevention device waits for the user to select a working mode. The working modes include treatment mode, rehabilitation mode and leisure mode:

When the working mode is determined to be the treatment mode, the working time of the foot vein thrombosis prevention device is set to 1.5h, where:

In the first stage of 0-20mins, use the pressurization device to give the foot a pressure of 30-35mmHg, and the pressurization frequency is the user's pulse rate. Preferably, the pressure value is 34mmHg;

The second stage is 15-45mins, use the pressurization device to give the foot a pressure of 35-40mmHg, and the pressurization frequency is the user's pulse rate, preferably, the pressure value is 38mmHg;

The third stage is 45-90mins, use the pressurization device to give the foot a pressure of 40-42mmHg, and the pressurization frequency is the user's pulse rate, preferably, the pressure value is 42mmHg;

When the working mode is determined to be rehabilitation mode, the working time of the foot vein thrombosis prevention device is set to 1.5h, where:

In the first stage of 0-30mins, use the pressurization device to give the foot a pressure of 25-30mmHg, and the pressurization frequency is the pulse rate of the user. Preferably, the pressure value is 30mmHg;

The second stage is 30-70mins, use the pressurization device to give the foot a pressure of 30-35mmHg, and the pressurization frequency is the user's pulse rate, preferably, the pressure value is 33mmHg;

The third stage is 70-90mins, using the pressurization device to give the foot a pressure of 25-30mmHg. The pressurization frequency is the user’s pulse rate. Preferably, the pressure value is 30mmHg;

When the working mode is determined to be the leisure mode, the working time of the foot vein thrombosis prevention device is set to 1-2h, and the pressurizing device is used to give the foot a pressure of 25-30mmHg, and the pressurizing frequency is the pulse rate of the user, preferably, the pressure value 30mmHg;

D7 end of working hours;

D8 shutdown.

It should be noted that the realization of this control method is based on the foot binding bag 1, the pressurization device 2, the gas circuit connection pipe 3, the heating device 4, the external wire 5 and the prevention device 6, because the prevention device 6 and the pressurization device 2 The unique design can realize millisecond-level pressure loading and release. For example, within a working cycle T time, firstly use pulse pressurization, the pressurization time is generally within 200 milliseconds, and then maintain the pressure for 0.35T time, and then release the pressure and wait. next work cycle. This preventive device completely imitates the natural "foot pump" of the human body to double the blood flow velocity of veins and arteries, and can fully achieve the state of simulating natural walking.

The control method includes an automatic temperature detection program and an automatic foot binding detection program. The automatic temperature detection program can effectively detect the external environment, heat the user's feet in a low temperature environment, strengthen blood circulation, and avoid blind heating in a high temperature environment. Cause uncomfortable experience; the automatic foot binding detection program can use the pressure sensor to detect whether the user is wearing it correctly. If it is worn correctly, it will detect the user's pulse frequency and use the pulse frequency to pressurize synchronously to accelerate the return of venous blood without affecting the arteries. Blood supply and control methods include three working modes, specifically including treatment mode, rehabilitation mode and leisure mode. The treatment mode is aimed at patients during surgery and long-term bedridden patients. In the treatment mode, the heating temperature and compression value gradually increase; the rehabilitation mode For postoperative patients, the heating temperature and pressurization values in the treatment mode will have a reasonable cycle; the leisure mode is aimed at people who sit and lie down for a long time, this mode uses reasonable heating temperature and pressurization values, and the above control methods are all synchronized Acts on left and right feet.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or to perform equivalent replacements for some of the technical features. The above modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (7)

1. a kind of foot phlebothrombosis prevents and treats device, which is characterized in that tie up bag (1), pressurizing device (2), gas circuit including foot and connect Take over (3), heating device (4) and external cord (5), in which:

The foot is tied up bag (1) and is made of parcel (101), sufficient rear fixed part (102) He Zuzhong fixed part (103): the packet The foot of different sizes can be wrapped up by wrapping up in portion (101), and the rear side use in parcel (101) is arranged in the foot rear fixed part (102) In tightening the parcel (101) at heel, fixed part (103) setting is in the front side of parcel (101) for receiving in the foot Parcel (101) at tight instep；

The pressurizing device (2) is by air bag (201), external sponge core (202), internal sponge core (203) and acupuncture point shock point (204) form: the air bag (201) is arranged in the interlayer that parcel (101) is located at sole by welded seal line (205), The external sponge core (202) is arranged in the interlayer that parcel (101) is located at instep by welded seal line (205), described Internal sponge core (203) is filled in air bag (201) inside, and the acupuncture point shock point (204), which is arranged, is located at foot in parcel (101) On the inner surface at bottom；

The gas circuit connecting pipe (3) is made of tracheae (301) and CPC pin end (302), and one end of the tracheae (301) passes through CPC pin end (302) connection driving gas source, it is internal that the other end of the tracheae (301) is connected to the air bag (201)；

Heating device (4) setting is in the interlayer of parcel (101) close foot and including heating cloth (401) and temperature Sensor (402), the heating cloth (401) are far infrared heating cloth, and the temperature sensor (402) is used to acquire the reality of heating Border temperature；

The external cord (5) includes direct current supply line and temperature signal line, and the direct current supply line is used for heating cloth (401) Power supply is provided, the temperature signal line is used for transmission the live signal of temperature sensor (402) to realize the closed-loop control of temperature.

2. a kind of foot phlebothrombosis as described in claim 1 prevents and treats device, which is characterized in that the foot tie up bag (1) by Two-layer nonwoven is sutured by sewing thread, and the air bag (201) is close by welded seal line (205) by two layers of TPU film It seals.

3. a kind of foot phlebothrombosis as described in claim 1 prevents and treats device, which is characterized in that the acupuncture point shock point It (204) include that insomnia point hits point (2041), Yongquan acupoint hits point (2042) and point (2043) are hit in Lineiting cave, the insomnia point is hit a little (2041), Yongquan acupoint hits point (2042) and Lineiting cave hits point (2043) and is made of silica gel and magnetite and fixed by bonding way Inner surface in parcel (101) contact vola.

4. a kind of foot phlebothrombosis as described in claim 1 prevents and treats device, which is characterized in that the foot rear fixed part (102) it is made of elastic band (1021) and the first velcro fastener (1022), one end setting of the elastic band (1021) is being wrapped up Portion (101) is used for close to the position of heel, the first velcro fastener (1022) setting in the other end of elastic band (1021) It is bonded the outer surface of parcel (101).

5. a kind of foot phlebothrombosis as described in claim 1 prevents and treats device, which is characterized in that fixed part in the foot (103) by the first bandage (1031), the second bandage (1032), the second velcro fastener (1033) and third velcro fastener (1034) group At one end of first bandage (1031) and the second bandage (1032) is separately positioned on the position of parcel (101) close to instep It sets, the second velcro fastener (1033) setting is used to be bonded the outer of parcel (101) in the other end of the first bandage (1031) Surface, third velcro fastener (1034) setting are used to be bonded parcel (101) in the other end of the second bandage (1032) Outer surface.

6. a kind of foot phlebothrombosis as described in claim 1 prevents and treats device, which is characterized in that further include for driving and controlling The prevention and treatment instrument (6) of work processed, the prevention and treatment instrument (6) include shell (601), control panel (602), control mainboard (603), vacuum Diaphragm pump (604), cylinder (605), gas circuit converter (606), solenoid valve (607), gas outlet (608), air inlet (609), pressure Force snesor (610) and power module (611), in which:

The shell (601) is oblong hollow-core construction；

The control panel (602) setting shell (601) front and the display screen including being shown for information (6021) and Keyboard (6022) for information exchange；

The control mainboard (603) is for power supply conversion, signal processing, heating closed-loop control and pressurization closed-loop control, control master Plate (603) is separately connected control panel (602), vacuum diaphragm pump (604), solenoid valve (607), pressure sensor (610), power supply Module (611) and temperature sensor (402)；

The vacuum diaphragm pump (604) receives the driving signal of control mainboard (603), the vacuum diaphragm by circuit (612) It pumps (604) delivery outlet and passes through the air inlet (609) of pipeline (613) connection cylinder (605), the outlet of connection cylinder (605) Mouth is converted into left foot gas circuit and right sufficient gas circuit by gas circuit converter (606), and the quantity of the solenoid valve (607) is two difference It is arranged at the gas outlet (608) of left foot gas circuit and right sufficient gas circuit and for connecting the CPC pin end (302)；

The pressure sensor (610) is arranged on the pipeline (613) of gas outlet (608) for detecting airline pressure；

The power module (611) is that AC-DC module is used to for 220V alternating current to be converted into 12V DC electricity.

7. a kind of foot phlebothrombosis as claimed in claim 6 prevents and treats device, which is characterized in that the control mainboard (603) Including single-chip microcontroller (6031), power circuit (6032), vacuum pump driving circuit (6033), driving circuit for electromagnetic valve (6034), temperature Spend Acquisition Circuit (6035), pressure acquisition circuit (6036), keyboard circuit (6037), display circuit (6038), heat driven electricity Road (6039) and RTC clock circuit (6040), in which:

The input terminal of the power circuit (6032) connects the power module (611), the output end of power circuit (6032) connects Power unit inside connection device, power circuit (6032) are that DC-DC circuit is used to 12V DC electricity being converted into 3.3V and 5.0V Direct current；

The single-chip microcontroller (6031) passes through vacuum pump driving circuit (6033) control vacuum diaphragm pump (604) work, single-chip microcontroller (6031) by driving circuit for electromagnetic valve (6034) control solenoid valve (607) work, single-chip microcontroller (6031) passes through heat driven electricity Road (6039) control heating cloth (401) work；

The single-chip microcontroller (6031) obtains the Real-time Feedback of temperature sensor (402), monolithic by temperature collection circuit (6035) Machine (6031) obtains the Real-time Feedback of pressure sensor (610) by pressure acquisition circuit (6036)；

The single-chip microcontroller (6031) passes through display circuit by keyboard circuit (6037) connection keyboard (6022), single-chip microcontroller (6031) (6038) display screen (6021) are connected；

The RTC clock circuit (6040) connects single-chip microcontroller (6031) and provides accurate time reference for device.