Diabetic foot treatment and rehabilitation device based on double lower limb auxiliary circulation and control system

Abstract

This invention discloses a diabetic foot treatment and rehabilitation device and control system based on bilateral lower limb assisted circulation. The system includes an electrocardiogram (ECG) signal acquisition module, a signal processing system, and a control module. The ECG signal acquisition module converts acquired ECG signals into digital ECG signals. The signal processing system outputs diastolic and systolic wavebands based on the digital ECG signals and generates a first inflation / deflation command and a second inflation / deflation command. The control module converts the commands into a first inflation / deflation signal and a second inflation / deflation signal, respectively. The execution device controls the healthy side's inflation bladder to perform inflation / deflation actions within the diastolic waveband based on the first inflation / deflation signal, and controls the affected side's inflation bladder to perform inflation / deflation actions within the systolic waveband based on the second inflation / deflation command. This invention obtains the device's pressurization node through ECG wave analysis, enabling the control system to control the device's coordinated operation according to time nodes, thereby improving the device's effectiveness.

Description

Technical Field

[0001] This invention relates to the medical field, and more particularly to a diabetic foot treatment and rehabilitation device and control system based on bilateral lower limb assisted circulation. Background Technology

[0002] Diabetic foot is a common complication of diabetes and a complex disease process. It is closely related to neuropathy and vascular damage in diabetic patients. Long-term high blood sugar levels can lead to nerve cell damage and nerve fiber lesions, affecting sensation and nerve conduction in the foot, resulting in decreased or absent sensation, and consequently, serious consequences such as infection and gangrene. In addition to neuropathy, diabetes can also cause vascular stenosis and poor blood circulation, further exacerbating the risk of foot ischemia, ulcers, and infections. Furthermore, diabetic patients often have a disordered immune system, making them more susceptible to bacterial and other microbial infections, which can worsen foot infections.

[0003] Existing treatment methods include medication, surgical intervention, and nursing care. However, these methods are not ideal and have certain limitations. For example, medication requires long-term use and has side effects; surgical treatment may cause further damage to the patient's body; and nursing care requires long-term self-management and monitoring by the patient. Therefore, it is essential to develop a non-pharmacological, non-invasive diabetic foot treatment and rehabilitation device.

[0004] Existing technology uses three-stage airbags to wrap around the user's lower limbs and buttocks. By compressing the arterial system of the lower body, the airbags can improve blood perfusion in the lower limbs and increase blood supply to the feet, thereby helping to treat diabetic foot and relieving pain, improving ulcer healing, and reducing amputation rates.

[0005] However, due to the influence of human body impedance, the control system of the aforementioned treatment and rehabilitation device faces difficulties in coordinating with the user's electrocardiogram fluctuations. Summary of the Invention

[0006] The purpose of this invention is to provide a diabetic foot treatment and rehabilitation device and control system based on bilateral lower limb assisted circulation, aiming to solve the problem of difficulty in coordinating the control system of existing diabetic foot treatment and rehabilitation devices with the user's heart rate pulse.

[0007] In a first aspect, embodiments of the present invention provide a control system for a diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation. The device includes a healthy side inflatable bladder and an affected side inflatable bladder. The healthy side inflatable bladder is used to wrap the user's healthy leg and calf, and the affected side inflatable bladder is used to wrap the user's affected leg and calf. The control system includes an electrocardiogram signal acquisition module, a signal processing system, and a control module.

[0008] The electrocardiogram (ECG) signal acquisition module is used to acquire ECG signals and convert them into digital ECG signals;

[0009] The signal processing system is used to process digital electrocardiogram signals, output electrocardiogram wave characteristics, divide the waveform of the electrocardiogram wave characteristics into diastolic wave segments and systolic wave segments, and generate a first inflation / deflation command and a second inflation / deflation command.

[0010] The control module is used to convert the first and second charging / draining commands into first and second charging / draining signals for driving the actuator.

[0011] The actuator is used to control the healthy side inflatable balloon to perform inflation and deflation actions within the diastolic wave band of the heart according to the first inflation / deflation signal;

[0012] The actuator is used to control the affected side inflatable balloon to perform inflation and deflation actions within the cardiac systolic band according to the second inflation / deflation command.

[0013] Secondly, embodiments of the present invention also provide another control system for a diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation. The device includes a healthy side inflatable bladder and an affected side inflatable bladder. The healthy side inflatable bladder is used to wrap the user's healthy leg and calf, and the affected side inflatable bladder is used to wrap the user's affected leg and calf. The control system includes an electrocardiogram signal acquisition module, a signal processing system, and a control module.

[0014] The electrocardiogram (ECG) signal acquisition module is used to acquire ECG signals and convert them into digital ECG signals;

[0015] The signal processing system is used to process digital electrocardiogram signals, output electrocardiogram wave characteristics, and divide the waveform of the electrocardiogram wave characteristics into diastolic and systolic segments of the heart, as well as generate full inflation and full deflation commands.

[0016] The control module is used to convert the full inflation command and the full deflation command into full inflation signal and full deflation signal to drive the actuator.

[0017] The actuator is used to control the healthy side inflatable balloon and the affected side inflatable balloon to perform inflation and deflation actions within the diastolic waveband of the heart, based on the full inflation signal and the full deflation signal.

[0018] Thirdly, embodiments of the present invention provide a diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation, applied to the control system described above, the device comprising:

[0019] The first and second inflatable bladder covers are used to wrap around the user's healthy thigh and calf, respectively.

[0020] The third and fourth inflatable bladder sleeves are used to wrap the user's affected leg and thigh, respectively.

[0021] An actuator is used to control the first, second, third, and fourth airbag sleeves to perform inflation and deflation actions.

[0022] This invention discloses a diabetic foot treatment and rehabilitation device and control system based on bilateral lower limb assisted circulation. The system includes an electrocardiogram (ECG) signal acquisition module, a signal processing system, and a control module. The ECG signal acquisition module acquires ECG signals and converts them into digital ECG signals. The signal processing system outputs ECG wave characteristics based on the digital ECG signals and divides the waveform into diastolic and systolic segments, generating a first inflation / deflation command and a second inflation / deflation command. The control module converts the first and second inflation / deflation commands into first and second inflation / deflation signals to drive the actuators. The actuators control the healthy side's inflation bladder to perform inflation and deflation actions within the diastolic segment based on the first inflation / deflation signal. The actuators also control the affected side's inflation bladder to perform inflation and deflation actions within the systolic segment based on the second inflation / deflation command. This invention analyzes the ECG waves to determine the pressure points of the device that coordinate with the ECG waves, enabling the control system to work collaboratively according to time points, thereby improving the effectiveness of the device. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram illustrating the cooperative working principle of a control system provided in an embodiment of the present invention;

[0025] Figure 2 A schematic diagram illustrating the cooperative working principle of another control system provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the device provided in an embodiment of the present invention.

[0027] Explanation of the markings in the image:

[0028] 1. First inflatable airbag cover; 2. Second inflatable airbag cover; 3. Third inflatable airbag cover; 4. Fourth inflatable airbag cover; 51. First inflation solenoid valve; 52. First deflation solenoid valve; 61. Second inflation solenoid valve; 62. Second deflation solenoid valve; 71. Third inflation solenoid valve; 72. Third deflation solenoid valve; 8. Frequency converter; 9. Air compressor; 10. First air tank; 11. Adjustable pressure limiting valve; 12. Second air tank; 131. Fourth inflation solenoid valve; 132. Fourth deflation solenoid valve. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0033] To facilitate understanding of the control system of this invention, the diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation of this invention will be introduced first.

[0034] Please see Figure 3 The device of the present invention includes: a healthy side inflatable bladder sleeve and an affected side inflatable bladder sleeve; the healthy side inflatable bladder sleeve includes a first inflatable bladder sleeve 1 and a second inflatable bladder sleeve 2, the first inflatable bladder sleeve 1 is used to wrap the user's healthy thigh, and the second inflatable bladder sleeve 2 is used to wrap the user's healthy calf; the affected side inflatable bladder sleeve includes a third inflatable bladder sleeve 3 and a fourth inflatable bladder sleeve 4, the third inflatable bladder sleeve 3 is used to wrap the user's affected thigh, and the fourth inflatable bladder sleeve 4 is used to wrap the user's affected calf.

[0035] The device of the present invention further includes an execution device, which is used to control the first inflatable bladder sleeve 1, the second inflatable bladder sleeve 2, the third inflatable bladder sleeve 3 and the fourth inflatable bladder sleeve 4 to perform inflation and deflation actions at corresponding time nodes.

[0036] Specifically, the actuator includes a frequency converter 8, an air compressor 9, a first air tank 10, a second air tank 12, an adjustable pressure limiting valve 11, a first inflation solenoid valve 51, a first deflation solenoid valve 52, a second inflation solenoid valve 61, a second deflation solenoid valve 62, a third inflation solenoid valve 71, a third deflation solenoid valve 72, a fourth inflation solenoid valve 131, and a fourth deflation solenoid valve 132.

[0037] The frequency converter 8 is connected to the air compressor 9 and is used to regulate the air pressure output by the air compressor 9.

[0038] The air compressor 9 is connected to the first air tank 10 and the second air tank 12. An adjustable pressure limiting valve 11 is provided between the air compressor 9 and the second air tank 12 so that the first air tank 10 and the second air tank 12 can output different air pressures according to different needs. Preferably, the air pressure provided by the first air tank 10 is 25-50 kPa, and the air pressure provided by the second air tank 12 is less than 20 kPa.

[0039] The first air tank 10 can pressurize the air to the first airbag sleeve 1 through the first inflation solenoid valve 51 and vent the air through the first deflation solenoid valve 52; the first air tank 10 can pressurize the air to the second airbag sleeve 2 through the second inflation solenoid valve 61 and vent the air through the second deflation solenoid valve 62.

[0040] The second air tank 12 can pressurize the air to the third airbag sleeve 3 and the fourth airbag sleeve 4 through the third inflation solenoid valve 71 and the fourth inflation solenoid valve 131 respectively, and vent the air from the third airbag sleeve 3 through the third deflation solenoid valve 72, and vent the air from the fourth airbag sleeve 4 through the fourth deflation solenoid valve 132.

[0041] Based on the device described above, the control system of the present invention will be described in detail below.

[0042] Example 1

[0043] Please see Figure 1 The present invention provides a control system for a diabetic foot treatment and rehabilitation device based on dual lower limb assisted circulation. The control system includes an electrocardiogram signal acquisition module, a signal processing system, and a control module.

[0044] The ECG signal acquisition module is used to acquire the user's ECG signal and convert it into a digital ECG signal;

[0045] The signal processing system is used to process digital electrocardiogram signals, output electrocardiogram wave characteristics, divide the waveform of the electrocardiogram wave characteristics into the diastolic wave segment and the systolic wave segment, and generate the first inflation and deflation command and the second inflation and deflation command.

[0046] The control module is used to convert the first charge / discharge command and the second charge / discharge command into the first charge / discharge signal and the second charge / discharge signal to drive the actuator.

[0047] The actuator is used to control the healthy side balloon to perform inflation and deflation actions within the diastolic phase of the heart according to the first inflation / deflation signal;

[0048] The actuator is used to control the affected side's inflatable cuff to perform inflation and deflation actions within the systolic wave band of the heart, according to the second inflation / deflation command.

[0049] In this embodiment, based on the characteristics of the electrocardiogram output by the signal processing system, the diastolic and systolic segments of the heart are divided. For details, please refer to... Figure 1 The division in the ECG wave is based on the more obvious waveform features in the ECG wave characteristics to trigger the generation of the first inflation / deflation command and the second inflation / deflation command.

[0050] In this embodiment, the first inflation / deflation command includes a first inflation command and a first deflation command. In the waveform of the electrocardiogram characteristics, the first inflation command is triggered after the T wave ends and the first deflation command is triggered during the P wave. The first inflation command and the first deflation command are converted into a first inflation signal and a first deflation signal to drive the actuator through the control module.

[0051] In this embodiment, the second inflation / deflation command includes a second inflation command and a second deflation command. In the waveform of the electrocardiogram characteristics, the second inflation command is triggered at the beginning of the R wave and the second deflation command is triggered during the T wave. The control module converts the second inflation command and the second deflation command into a second inflation signal and a second deflation signal to drive the actuator.

[0052] In some embodiments, the positions of the T wave and P wave can be determined with reference to the position of the QRS wave. The QRS wave has the most obvious waveform characteristics and is the easiest to determine among the ECG waveform features. The position of the P wave can be defined as the waveform preceding the QRS wave, and the position of the T wave can be defined as the waveform following the QRS wave.

[0053] In some embodiments, in schemes where the characteristics of T waves and P waves are not obvious, the positions of T waves and P waves can be determined by referring to the peak time of the R wave. The position corresponding to the first preset time before the peak time of the R wave can be set as the position of the P wave, and the position corresponding to the second preset time after the peak time can be set as the position of the T wave.

[0054] The first method for controlling this device to perform charging and discharging is described in detail below:

[0055] Based on the triggering of electrocardiogram characteristics, the actuator pressurizes the healthy side inflatable cuff during the diastolic phase of the heart according to the first inflation signal. Specifically, the first gas tank 10 is controlled to sequentially add air pressure from bottom to top to the second inflatable cuff 2 and the first inflatable cuff 1 through the second inflation solenoid valve 61 and the first inflation solenoid valve 51 during the diastolic phase. The time interval for sequential pressurization from bottom to top is preferably 50ms. Then, the actuator simultaneously discharges the air pressure of the healthy side inflatable cuff during the diastolic phase according to the first exhaust signal. Specifically, the second exhaust solenoid valve and the first exhaust solenoid valve can be opened simultaneously to discharge the air pressure of the second inflatable cuff 2 and the first inflatable cuff 1.

[0056] Triggered by electrocardiogram characteristics, the actuator pressurizes the affected side's inflatable cuff during the systolic phase according to the second inflation signal. Specifically, the second gas reservoir 12 is controlled to simultaneously add pressure to the third inflatable cuff 3 and the fourth inflatable cuff 4 via the third inflation solenoid valve 71 and the fourth inflation solenoid valve 131 during the systolic phase, or sequentially add pressure from top to bottom to the third inflatable cuff 3 and the fourth inflatable cuff 4 via the third inflation solenoid valve 71 and the fourth inflation solenoid valve 131. Then, the actuator simultaneously releases the pressure from the affected side's inflatable cuff during the systolic phase according to the second deflation signal. Specifically, the third deflation solenoid valve 72 and the fourth deflation solenoid valve 132 can be controlled to open simultaneously, allowing the pressure from the third inflatable cuff 3 and the fourth inflatable cuff 4 to be released simultaneously.

[0057] It should be noted that there is a delay between the time point at which the inflation / deflation command is generated and the time point at which the inflation / deflation action is actually performed. It should also be clarified that the entire inflation and deflation process of the second inflation sleeve 2 and the first inflation sleeve 1 is completed within the diastolic phase of the heart; the entire inflation and deflation process of the third inflation sleeve 3 and the fourth inflation sleeve 4 is completed within the systolic phase of the heart.

[0058] Based on the above-described inflation and deflation process of this control system, it can be deduced that: firstly, the second inflation bladder 2 pressurizes the lower leg to allow blood to flow back from the lower extremities to the thigh; then, the first inflation bladder 1 pressurizes the leg to push blood upward from the thigh; after deflation of the second inflation bladder 2 and the first inflation bladder 1, the third inflation bladder 3 and the fourth inflation bladder 4 pressurize the leg (the pressure applied here is lower than that of the healthy side inflation bladder, preferably 10 kPa). Through this closed-loop blood perfusion method, blood is delivered to the affected foot of the user more efficiently, thereby improving the working effect of this device.

[0059] In some other embodiments, in the scheme of simultaneously adding air pressure to the third inflatable sleeve 3 and the fourth inflatable sleeve 4 and simultaneously deflating, only a third inflation solenoid valve 71 and a third deflation solenoid valve 72 can be provided. The third inflation solenoid valve 71 is connected to both the third inflatable sleeve 3 and the fourth inflatable sleeve 4 for simultaneous inflation, and the third deflation solenoid valve 72 is used to simultaneously deflate the air pressure of the third inflatable sleeve 3 and the fourth inflatable sleeve 4.

[0060] The second method for controlling this device to perform charging and discharging is described in detail below:

[0061] Example 2

[0062] Please see Figure 2 The present invention also provides a control system for a diabetic foot treatment and rehabilitation device based on dual lower limb assisted circulation, the control system including an electrocardiogram signal acquisition module, a signal processing system, and a control module;

[0063] The ECG signal acquisition module is used to acquire ECG signals and convert them into digital ECG signals;

[0064] The signal processing system is used to process digital electrocardiogram signals, output electrocardiogram wave characteristics, and divide the waveform of the electrocardiogram wave characteristics into the diastolic wave segment and the systolic wave segment of the heart, as well as generate full inflation command and full deflation command.

[0065] The control module is used to convert the full inflation command and full deflation command into full inflation signals and full deflation signals to drive the actuator.

[0066] The actuator is used to control the healthy side inflatable cuff and the affected side inflatable cuff to perform inflation and deflation actions during the diastolic phase of the heart, based on the full inflation signal and the full deflation signal.

[0067] In this embodiment, in the electrocardiogram characteristics, a full inflation command is triggered after the T wave ends, and a full deflation command is triggered during the P wave. Compared with the first embodiment, in the second embodiment, the entire inflation and deflation process of the healthy side inflatable balloon and the affected side inflatable balloon is performed within the diastolic wave band of the heart.

[0068] Specifically, the actuator sequentially controls the second inflatable cuff 2, the first inflatable cuff 1, and the affected side inflatable cuff (the third and fourth inflatable cuffs 3 and 4 within the affected side inflatable cuff can be inflated simultaneously or sequentially from top to bottom) within the diastolic waveband based on the full inflation signal, with a preferred time interval of 50ms for each sequential inflation. The actuator also controls the second inflatable cuff 2, the first inflatable cuff 1, the third inflatable cuff 3, and the fourth inflatable cuff 4 to simultaneously deflate within the diastolic waveband based on the full deflation signal. This inflation / deflation mechanism also achieves a similar closed-loop blood perfusion method, allowing for more efficient blood delivery to the user's affected foot, thus improving the device's effectiveness.

[0069] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A control system for a diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation, characterized in that, The device includes a healthy side inflatable bladder and an affected side inflatable bladder. The healthy side inflatable bladder is used to wrap the user's healthy leg and thigh, and the affected side inflatable bladder is used to wrap the user's affected leg and thigh. The control system includes an electrocardiogram signal acquisition module, a signal processing system, and a control module. The electrocardiogram (ECG) signal acquisition module is used to acquire ECG signals and convert them into digital ECG signals; The signal processing system is used to process digital electrocardiogram signals, output electrocardiogram wave characteristics, divide the waveform of the electrocardiogram wave characteristics into diastolic wave segments and systolic wave segments, and generate a first inflation / deflation command and a second inflation / deflation command. The control module is used to convert the first and second charging / draining commands into first and second charging / draining signals for driving the actuator. The actuator is used to control the healthy side inflatable balloon to perform inflation and deflation actions within the diastolic wave band of the heart according to the first inflation / deflation signal; The actuator is used to control the affected side inflatable balloon to perform inflation and deflation actions within the cardiac systolic band according to the second inflation / deflation command.

2. The control system of the diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation according to claim 1, characterized in that: The first inflation / deflation command includes a first inflation command and a first deflation command. In the waveform of the electrocardiogram characteristics, the first inflation command is triggered after the T wave ends and the first deflation command is triggered during the P wave.

3. The control system of the diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation according to claim 1, characterized in that: The second inflation / deflation command includes a second inflation command and a second deflation command. In the waveform of the electrocardiogram characteristics, the second inflation command is triggered at the beginning of the R wave and the second deflation command is triggered during the T wave.

4. The control system of the diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation according to claim 1, characterized in that, The healthy side inflatable bladder includes a first inflatable bladder and a second inflatable bladder for wrapping the user's healthy leg and thigh respectively, and the affected side inflatable bladder includes a third inflatable bladder and a fourth inflatable bladder for wrapping the user's affected leg and thigh respectively. The control module is used to convert the first inflation command and the first deflation command into a first inflation signal and a first deflation signal to drive the actuator. The actuator is used to sequentially control the second and first inflatable balloons to perform inflation actions from bottom to top within the diastolic band of the heart according to the first inflation signal, and to control the second and first inflatable balloons to perform deflation actions simultaneously within the diastolic band of the heart according to the first deflation command.

5. The control system of the diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation according to claim 4, characterized in that, Also includes: The control module is used to convert the second inflation command and the second deflation command into a second inflation signal and a second deflation signal for driving the actuator. The actuator is used to control the third and fourth inflatable cuffs to perform inflation actions simultaneously within the cardiac systolic band according to the second inflation signal, or to control the third and fourth inflatable cuffs to perform inflation actions sequentially from top to bottom. The actuator is used to control the third and fourth inflatable cuffs to simultaneously perform the venting action within the cardiac systolic band according to the second venting signal.

6. A diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation, applied to the control system described in any one of claims 1 to 5, characterized in that, The device includes: The first and second inflatable bladder covers are used to wrap around the user's healthy thigh and calf, respectively. The third and fourth inflatable bladder sleeves are used to wrap the user's affected leg and thigh, respectively. An actuator is used to control the first, second, third, and fourth airbag sleeves to perform inflation and deflation actions.

7. The diabetic foot treatment and rehabilitation device based on bilateral lower limb assisted circulation according to claim 6, characterized in that: The inflation pressure of the first and second inflatable bladder sleeves is 25-50 kPa; the inflation pressure of the third and fourth inflatable bladder sleeves is less than 20 kPa.

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