Treatment device and system for detecting blood flow in treatment area

Abstract

The present invention provides a treatment device and a method for detecting blood flow at a treatment site. The treatment device includes: a detection module, a control module, an inflation module, a deflation module and an airbag; the detection module is used to detect the blood flow at the treatment site in real time and send the detected detection data to the control module in real time; the control module is used to receive the detection data sent by the detection module in real time and process the detection data sent by the detection module in real time. When it is determined according to the detection data that blood flows back from the treatment site, the inflation module is controlled to inflate the airbag; when it is determined according to the detection data that blood flows to the treatment site, the deflation module is controlled to extract the gas in the airbag. The present invention provides a treatment device and a method for detecting blood flow at a treatment site. The treatment device can achieve better treatment effects.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a treatment device and a method for detecting blood flow conditions at a treatment site. Background Art

[0002] Platelets and fibrinogen gather together to form a thrombus, which can easily block blood vessels and cause myocardial infarction, cerebral infarction, limb artery infarction, thrombosis, etc. Because the blood in the veins of the lower limbs is not easy to flow back due to gravity, it is easier to form a thrombus when the venous valve function of the lower limbs is impaired, lower limb venous inflammation, lower limb deep veins are squeezed, and blood is hypercoagulated. At present, air wave pressure meters are used to promote blood flow in the treatment area. The air wave pressure meter repeatedly inflates and deflates the airbag bound to the treatment area (such as the limbs) to form a circulating pressure on the treatment area, squeeze the treatment area evenly, orderly and appropriately, promote blood flow, accelerate blood return to the treatment area, and help prevent the formation of thrombus and limb edema.

[0003] However, the existing air wave pressure instrument compresses the treatment site according to the natural frequency, and it is very likely that when the air wave pressure instrument is compressing, the heart is also ejecting blood to the treatment site. In this way, the blood flow in the treatment site cannot be promoted, and the treatment effect is poor. Summary of the invention

[0004] The embodiment of the present invention provides a treatment device and a method for detecting blood flow conditions at a treatment site, and a better treatment effect can be obtained through the treatment device.

[0005] The embodiment of the present invention provides a treatment device, including: a detection module, a control module, an inflation module, a deflation module and an air bag;

[0006] Wherein, the detection module, the inflation module and the deflation module are all connected to the control module, and the inflation module and the deflation module are all connected to the airbag, wherein the airbag acts on the treatment site;

[0007] The detection module is used to detect the blood flow of the treatment site in real time and send the detected detection data to the control module in real time;

[0008] The control module is used to receive the detection data sent by the detection module in real time, process the detection data sent by the detection module in real time, and when it is determined according to the detection data that blood is flowing back from the treatment site, control the inflation module to inflate the airbag; when it is determined according to the detection data that blood is flowing toward the treatment site, control the deflation module to extract the gas in the airbag.

[0009] Optionally,

[0010] The inflation module comprises: a first air storage tank and a first valve;

[0011] The first gas storage tank is connected to the air bag via the first valve;

[0012] The first valve is connected to the control module;

[0013] The air pressure in the first air tank is greater than the air pressure in the air bag;

[0014] The control module is used to control the first valve to open so that the first air tank can inflate the airbag when it is determined based on the detection data that blood is flowing back from the treatment site, and to control the first valve to close so that the first air tank can stop inflating the airbag when the air pressure in the airbag is within a first preset air pressure range.

[0015] Optionally,

[0016] The deflation module comprises: a second gas storage tank and a second valve;

[0017] The second gas storage tank is connected to the air bag via the second valve;

[0018] The second valve is connected to the control module;

[0019] The air pressure in the second air storage tank is lower than the air pressure in the air bag;

[0020] The control module is used to control the second valve to open so that the second gas storage tank can extract the gas in the airbag when it is determined according to the detection data that blood flows to the treatment site, and to control the second valve to close so that the second gas storage tank can stop extracting the gas from the airbag when the air pressure in the airbag is within a second preset air pressure range.

[0021] Optionally,

[0022] The therapeutic device further comprises: a first air pressure sensor;

[0023] The first air pressure sensor is disposed inside the airbag;

[0024] The first air pressure sensor is connected to the control module;

[0025] The first air pressure sensor is used to sense the air pressure in the airbag in real time and send the sensed air pressure value in the airbag to the control module;

[0026] The control module is used to control the inflation module and the deflation module according to the air pressure value in the airbag sent by the first air pressure sensor.

[0027] Optionally,

[0028] The therapeutic device further includes: a positive pressure pump and a second air pressure sensor;

[0029] The positive pressure pump is connected to the first air storage tank;

[0030] The second air pressure sensor is arranged inside the first air storage tank;

[0031] The positive pressure pump and the second air pressure sensor are both connected to the control module;

[0032] The second air pressure sensor is used to sense the air pressure in the first air storage tank in real time, and send the sensed air pressure value in the first air storage tank to the control module;

[0033] The control module is used to control the positive pressure pump to inflate the first air storage tank according to the air pressure value in the first air storage tank sent by the second air pressure sensor, so that the air pressure in the first air storage tank is within a third preset air pressure range.

[0034] Optionally,

[0035] The therapeutic device further comprises: a negative pressure pump and a third air pressure sensor;

[0036] The negative pressure pump is connected to the second air storage tank;

[0037] The third air pressure sensor is arranged inside the second air storage tank;

[0038] The negative pressure pump and the third air pressure sensor are both connected to the control module;

[0039] The third air pressure sensor is used to sense the air pressure in the second air storage tank in real time, and send the sensed air pressure value in the second air storage tank to the control module;

[0040] The control module is used to control the negative pressure pump to evacuate the first gas storage tank according to the air pressure value in the first gas storage tank sent by the third air pressure sensor, so that the air pressure in the first gas storage tank is within a fourth preset air pressure range.

[0041] Optionally,

[0042] The detection module is used to detect the blood volume wave of the treatment site in real time and send the blood volume wave to the control module;

[0043] The control module is used to receive the blood volume wave sent by the detection module in real time, process the blood volume wave in real time, and when the rising edge of the blood volume wave is determined, control the deflation module to extract the gas in the airbag; when the first flat section after the rising edge of the blood volume wave is determined, control the inflation module to inflate the airbag.

[0044] Optionally,

[0045] The detection module is used to sample the hemoglobin amount of the treatment site according to a preset sampling rate and send the sampled values ​​to the control module;

[0046] The control module is used to receive the sampling values ​​sent by the detection module in real time, and determine the rising edge of the blood volume wave when the ratio of the first sampling value to the last sampling value in a first number of consecutive sampling values ​​is greater than or equal to a first threshold.

[0047] Optionally,

[0048] The detection module is used to sample the hemoglobin amount of the treatment site according to a preset sampling rate and send the sampled values ​​to the control module;

[0049] The control module is used to receive the sampling values ​​sent by the detection module in real time, and when any two adjacent sampling values ​​in the second number of consecutive sampling values ​​satisfy equation 1, determine a flat segment of the blood volume wave;

[0050] Wherein, the formula 1 is:

[0051]

[0052] Among them, V n+1 is the n+1th sampling value among the second number of consecutive sampling values, V n is the nth sampling value among the second number of consecutive sampling values, and q is the second threshold.

[0053] In a second aspect, an embodiment of the present invention provides a method for detecting blood flow at a treatment site, comprising:

[0054] Obtain the blood volume wave of the treatment site in real time;

[0055] determining a rising edge of a blood volume wave at the treatment site;

[0056] When a rising edge of the blood volume wave of the treatment site is determined, determining that blood flows to the treatment site;

[0057] determining a first flat segment after a rising edge of the blood volume wave;

[0058] When the first flat section after the rising edge of the blood volume wave is determined, it is determined that blood is flowing back from the treatment site.

[0059] Optionally,

[0060] The real-time acquisition of the blood volume wave of the treatment site includes:

[0061] Acquiring in real time a sampling value obtained by sampling the hemoglobin amount at the treatment site according to a preset sampling rate;

[0062] Determining the rising edge of the blood volume wave at the treatment site includes:

[0063] Determine a ratio of a first sample value to a last sample value among a first number of consecutive sample values;

[0064] When the ratio of the first sampling value to the last sampling value in the first number of consecutive sampling values ​​is greater than or equal to a first threshold, the rising edge of the blood volume wave of the treatment site is determined.

[0065] Optionally,

[0066] The real-time acquisition of the blood volume wave of the treatment site includes:

[0067] Acquiring in real time a sampling value obtained by sampling the hemoglobin amount at the treatment site according to a preset sampling rate;

[0068] Determining the first flat section after the rising edge of the blood volume wave comprises:

[0069] Determine whether any two adjacent sampling values ​​among the second number of consecutive sampling values ​​satisfy equation 1;

[0070] Wherein, the formula 1 is:

[0071]

[0072] Among them, V n+1 is the n+1th sampling value among the second number of consecutive sampling values, V n is the nth sampling value among the second number of consecutive sampling values, and q is the second threshold value;

[0073] When any two adjacent sampling values ​​among the second number of continuous sampling values ​​satisfy the first formula, a flat segment of the blood volume wave is determined.

[0074] In the embodiment of the present invention, the detection module detects the blood flow of the treatment site in real time and sends the detection data to the control module. When the control module determines that the blood is flowing back from the treatment site to the heart based on the detection data, the control module controls the inflation module to inflate the airbag, and the airbag squeezes the treatment site to promote the blood flow back to the treatment site. When the control module determines that the blood is flowing to the treatment site based on the detection data, the deflation module controls the airbag to extract the gas in the airbag to avoid the airbag squeezing the treatment site and preventing the airbag from obstructing the blood flow. The embodiment of the present invention acts on the treatment site through the airbag based on the blood flow of the treatment site to promote the blood circulation of the treatment site, and can obtain a better treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0076] Figure 1 is a schematic diagram of a treatment device provided by an embodiment of the present invention;

[0077] Figure 2 is a waveform diagram of a blood volume wave provided by an embodiment of the present invention;

[0078] Figure 3 is a schematic diagram of another treatment device provided by an embodiment of the present invention;

[0079] Figure 4 is a schematic diagram of another treatment device provided by an embodiment of the present invention;

[0080] Figure 5 The present invention is a flowchart of a method for detecting blood flow in a treatment area provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0081] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0082] The air wave pressure meter can squeeze the treatment site to promote blood circulation in the treatment site, mainly to promote the blood in the treatment site to flow back to the heart. However, the existing air wave pressure meter squeezes the treatment site according to the natural frequency. No matter what the current blood flow in the treatment site is, the air wave pressure meter will squeeze the treatment site according to the natural frequency. In other words, when the heart contracts and ejects blood to the treatment site, and the blood flows to the treatment site, the air wave pressure meter may squeeze the treatment site, which will not only fail to promote blood circulation in the treatment site, but will hinder blood circulation in the treatment site and cause damage to the treatment site; when the heart relaxes and causes blood in the treatment site to flow back to the heart, the air wave pressure meter may not squeeze the treatment site, which will not promote blood circulation in the treatment site. It can be seen that the treatment effect of the existing air wave pressure meter is poor.

[0083] In order to obtain better treatment effects, Figure 1 As shown, an embodiment of the present invention provides a treatment device, including: a detection module 101, a control module 102, an inflation module 103, a deflation module 104 and an airbag 105;

[0084] The detection module 101, the inflation module 103 and the deflation module 104 are all connected to the control module 102, and the inflation module 103 and the deflation module 104 are all connected to the airbag 105, wherein the airbag 105 acts on the treatment site;

[0085] The detection module 101 is used to detect the blood flow of the treatment site in real time and send the detected detection data to the control module 102 in real time;

[0086] The control module 102 is used to receive the detection data sent by the detection module 101 in real time, and process the detection data sent by the detection module 101 in real time. When it is determined according to the detection data that blood is flowing back from the treatment site, the control module 102 controls the inflation module 103 to inflate the airbag 105. When it is determined according to the detection data that blood is flowing toward the treatment site, the control module 102 controls the deflation module 104 to extract the gas in the airbag.

[0087] In the embodiment of the present invention, the detection module detects the blood flow of the treatment site in real time and sends the detection data to the control module. When the control module determines that the blood is flowing back from the treatment site to the heart based on the detection data, the control module controls the inflation module to inflate the airbag, and the airbag squeezes the treatment site to promote the blood flow back to the treatment site. When the control module determines that the blood is flowing to the treatment site based on the detection data, the deflation module controls the airbag to extract the gas in the airbag to avoid the airbag squeezing the treatment site and preventing the airbag from obstructing the blood flow. The embodiment of the present invention acts on the treatment site through the airbag based on the blood flow of the treatment site to promote the blood circulation of the treatment site, and can obtain a better treatment effect.

[0088] Wherein, the detection module comprises: a clip-on volume wave sensor;

[0089] The clip-on volume wave sensor is clipped on the treatment site, and the clip-on volume wave sensor emits infrared light with a wavelength of 640 nm to detect the blood flow condition of the treatment site.

[0090] The clip-on plethysmogram sensor is also called a beam-type infrared finger sleeve, and includes an infrared emitting LED and an external receiving tube. The infrared emitting LED is used to emit infrared light with a wavelength of 640nm, and the external receiving tube is used to receive the infrared light. When using the clip-on plethysmogram sensor, the clip-on plethysmogram sensor is clamped on the treatment site (e.g., toes, fingers, etc.), so that the infrared light emitted by the infrared emitting LED passes through the treatment site and is received by the external receiving tube. The external receiving tube sends detection data to the control module according to the received infrared light.

[0091] In addition, the wavelength of the infrared light emitted by the clip-on volume wave sensor is 640nm. The wavelength of 640nm is more sensitive to blood flow and can accurately reflect the blood flow conditions at the treatment site.

[0092] The above detection data may be the blood volume wave of the treatment site.

[0093] In one embodiment of the present invention, the inflation module comprises: a first air storage tank and a first valve;

[0094] The first gas storage tank is connected to the air bag via the first valve;

[0095] The first valve is connected to the control module;

[0096] The air pressure in the first air tank is greater than the air pressure in the air bag;

[0097] The control module is used to control the first valve to open so that the first air tank can inflate the airbag when it is determined based on the detection data that blood is flowing back from the treatment site, and to control the first valve to close so that the first air tank can stop inflating the airbag when the air pressure in the airbag is within a first preset air pressure range.

[0098] In an embodiment of the present invention, the inflation module includes an air tank and a valve, which are respectively a first air tank and a first valve. A first valve is arranged between the first air tank and the airbag. When the first valve is opened, the first air tank is connected to the airbag, and when the first valve is closed, the first air tank is not connected to the airbag. The air pressure in the first air tank is greater than the air pressure in the airbag. When the airbag needs to be inflated, the airbag can be inflated quickly due to the higher air pressure in the first air tank. The greater the difference in air pressure between the first air tank and the airbag, the faster the inflation speed. For example, the air pressure in the first air tank can be 100kPa. The capacity of the first air tank should also be greater than the capacity of the airbag. Preferably, the capacity of the first air tank is 10 times or more than the capacity of the airbag.

[0099] Of course, the inflation module can also be realized by an air pump. However, if the airbag is to be instantly inflated, a large air pump is required, and the air pump needs to have a very large flow rate and start very quickly. Obviously, the requirements for the air pump are very high. The air pump that meets the above requirements is large in size, heavy in weight and high in cost. Its application in this treatment device will increase the cost of the treatment device and make the treatment device very inconvenient to carry.

[0100] In the embodiment of the present invention, a gas storage tank is used to inflate the airbag, and the speed of inflating the airbag can be increased by simply increasing the air pressure of the gas storage tank, thereby achieving the purpose of instant inflation. Obviously, the use of a gas storage tank will make the cost of the treatment device lower and easier to carry.

[0101] In addition, the first valve may be a solenoid valve, and the control module may control the solenoid valve. When the control module controls the first valve to open, the air pressure in the first gas storage tank is greater than the air pressure in the airbag, so that the first gas storage tank can inflate the airbag. Preferably, the air pressure in the first gas storage tank is always greater than the air pressure in the airbag, so that the speed at which the first gas storage tank inflates the airbag can be accelerated.

[0102] In addition, the first valve may be a normally closed valve, that is, the first valve is in a closed state when no power is supplied, and the air path of the first valve is connected after power is supplied, so that the first air storage tank can quickly inflate the airbag.

[0103] The first gas storage tank may be provided with a solenoid valve, through which the pressure of the first gas storage tank is relieved. The solenoid valve may be a normally open valve, that is, the solenoid valve is in a state of being connected to the atmosphere when not powered on, and the solenoid valve is closed after power is turned on, and its function is to make the air pressure in the first gas storage tank equal to 1 atmosphere when the treatment device is not working.

[0104] In one embodiment of the present invention, the therapeutic device further comprises: a positive pressure pump and a second air pressure sensor;

[0105] The positive pressure pump is connected to the first air storage tank;

[0106] The second air pressure sensor is arranged inside the first air storage tank;

[0107] The positive pressure pump and the second air pressure sensor are both connected to the control module;

[0108] The second air pressure sensor is used to sense the air pressure in the first air storage tank in real time, and send the sensed air pressure value in the first air storage tank to the control module;

[0109] The control module is used to control the positive pressure pump to inflate the first air storage tank according to the air pressure value in the first air storage tank sent by the second air pressure sensor, so that the air pressure in the first air storage tank is within a third preset air pressure range.

[0110] In the embodiment of the present invention, after the first air tank inflates the airbag, the air pressure in the first air tank will decrease. In order to stabilize the air pressure in the first air tank within the third preset air pressure range, it is necessary to inflate the first air tank through a positive pressure pump. The control module controls the operation of the positive pressure pump based on the air pressure value in the first air tank output by the second air pressure sensor, so that the air pressure in the first air tank is maintained within the third preset air pressure range. The positive pressure pump is an air pump, which inflates the first air tank under the control of the control module.

[0111] The second air pressure sensor may be an air pressure sensor with temperature compensation, which can more accurately sense the air pressure in the first air tank. The second air pressure sensor may have a measuring range of 150 kPa. The positive pressure pump may be a DC 24V air pump with a flow rate of 60 L / mi and a maximum air pressure of 280 kPa.

[0112] The control module can control the positive pressure pump to inflate the first air tank when the first air tank stops inflating the airbag. Of course, the positive pressure pump can also be controlled to inflate the first air tank at any time, as long as the air pressure in the first air tank is maintained within the third preset air pressure range before the next inflation of the airbag.

[0113] A positive pressure pump driving circuit may also be included between the positive pressure pump and the control module. The control signal sent by the control module to the positive pressure pump is amplified by the positive pressure pump driving circuit to drive the positive pressure pump to work reliably.

[0114] In one embodiment of the present invention, the deflation module comprises: a second gas storage tank and a second valve;

[0115] The second gas storage tank is connected to the air bag via the second valve;

[0116] The second valve is connected to the control module;

[0117] The air pressure in the second air storage tank is lower than the air pressure in the air bag;

[0118] The control module is used to control the second valve to open so that the second gas storage tank can extract the gas in the airbag when it is determined according to the detection data that blood flows to the treatment site, and to control the second valve to close so that the second gas storage tank can stop extracting the gas from the airbag when the air pressure in the airbag is within a second preset air pressure range.

[0119] In an embodiment of the present invention, the deflation module includes an air tank and a valve, which are respectively a second air tank and a second valve. A second valve is provided between the second air tank and the airbag. When the second valve is opened, the second air tank is connected to the airbag, and when the second valve is closed, the second air tank is not connected to the airbag. The air pressure in the second air tank is lower than the air pressure in the airbag. When the airbag needs to be deflated, the gas in the airbag can be quickly extracted due to the lower air pressure in the second air tank. The greater the difference in air pressure between the second air tank and the airbag, the faster the extraction speed. Preferably, the air pressure in the second air tank is negative pressure. For example, the air pressure in the second air tank can be -20kPa. The capacity of the second air tank should also be greater than the capacity of the airbag. Preferably, the capacity of the second air tank is 10 times or more of the capacity of the airbag.

[0120] Of course, the deflation module can also be realized by an air pump. However, if the airbag is to be deflated instantly, a large air pump is required, and the air pump needs to have a very large flow rate and start very quickly. Obviously, the requirements for the air pump are very high. The air pump that meets the above requirements is large in size, heavy in weight and high in cost. Its application in this treatment device will increase the cost of the treatment device and make the treatment device very inconvenient to carry.

[0121] In the embodiment of the present invention, a gas storage tank is used to deflate the airbag. The speed of extracting air from the airbag can be increased by reducing the air pressure of the gas storage tank, thereby achieving the purpose of instant deflation. Obviously, the use of a gas storage tank will make the cost of the treatment device lower and easier to carry.

[0122] In addition, the second valve may be a solenoid valve, and the control module may control the solenoid valve. When the control module controls the second valve to open, the air pressure in the second air tank is lower than the air pressure in the airbag, so that the second air tank can be ensured to draw air from the airbag. Preferably, the air pressure in the second air tank is always lower than the air pressure in the airbag, so that the speed at which the second air tank deflates the airbag can be accelerated.

[0123] In addition, the second valve can be a normally closed valve, that is, the second valve is in a closed state when no power is supplied, and the gas path of the second valve is connected after power is supplied, so that the second gas storage tank draws out the gas in the airbag, causing the airbag to lose pressure quickly.

[0124] The second gas storage tank may be provided with a solenoid valve, through which the pressure of the second gas storage tank is relieved. The solenoid valve may be a normally open valve, that is, the solenoid valve is in a state of being connected to the atmosphere when not powered on, and the solenoid valve is closed after power is turned on, and its function is to make the gas pressure in the second gas storage tank equal to 1 atmosphere when the treatment device is not working.

[0125] In one embodiment of the present invention, the therapeutic device further comprises: a negative pressure pump and a third air pressure sensor;

[0126] The negative pressure pump is connected to the second air storage tank;

[0127] The third air pressure sensor is arranged inside the second air storage tank;

[0128] The negative pressure pump and the third air pressure sensor are both connected to the control module;

[0129] The third air pressure sensor is used to sense the air pressure in the second air storage tank in real time, and send the sensed air pressure value in the second air storage tank to the control module;

[0130] The control module is used to control the negative pressure pump to evacuate the first gas storage tank according to the air pressure value in the first gas storage tank sent by the third air pressure sensor, so that the air pressure in the first gas storage tank is within a fourth preset air pressure range.

[0131] In the embodiment of the present invention, after the second gas tank deflates the airbag, the air pressure in the second gas tank will increase. In order to stabilize the air pressure in the second gas tank within the fourth preset air pressure range, it is necessary to pump out the gas in the second gas tank through a negative pressure pump. The control module controls the operation of the negative pressure pump based on the air pressure value in the second gas tank output by the third air pressure sensor, so that the air pressure in the second gas tank is maintained within the fourth preset air pressure range. The negative pressure pump is an air pump, which pumps out the gas in the second gas tank under the control of the control module.

[0132] The third air pressure sensor may be an air pressure sensor with temperature compensation, which can more accurately sense the air pressure in the second air storage tank. The third air pressure sensor may have a range of -50 kPa. The negative pressure pump may be a DC 24V air pump with a flow rate of 40 L / mi and a minimum air pressure of -80 kPa.

[0133] The control module can control the negative pressure pump to extract the gas in the second gas tank when the second gas tank stops extracting the gas in the airbag. Of course, the negative pressure pump can also be controlled to extract the gas in the second gas tank at any time, as long as the air pressure in the second gas tank is maintained within the fourth preset air pressure range before the airbag is deflated next time.

[0134] A negative pressure pump driving circuit may also be included between the negative pressure pump and the control module. The control signal sent by the control module to the negative pressure pump is amplified by the negative pressure pump driving circuit to drive the negative pressure pump to work reliably.

[0135] In one embodiment of the present invention, the therapeutic device further comprises: a first air pressure sensor;

[0136] The first air pressure sensor is disposed inside the airbag;

[0137] The first air pressure sensor is connected to the control module;

[0138] The first air pressure sensor is used to sense the air pressure in the airbag in real time and send the sensed air pressure value in the airbag to the control module;

[0139] The control module is used to control the inflation module and the deflation module according to the air pressure value in the airbag sent by the first air pressure sensor.

[0140] In an embodiment of the present invention, when the airbag is inflated, the air pressure in the airbag needs to be controlled within a reasonable air pressure range, so as to avoid poor treatment effect on the treatment part due to too low air pressure in the airbag, and also avoid damage to the treatment part due to too high air pressure in the airbag. In order to control the air pressure in the airbag within a reasonable air pressure range, a pressure sensor, that is, a first air pressure sensor, is provided in the airbag. When the airbag is inflated, the air pressure in the airbag can be controlled within 20-35kPa. When the airbag is inflated, when the air pressure value output by the first air pressure sensor reaches the air pressure range, the control module controls the inflation module to stop inflating the airbag. In addition, after the inflation is completed, the air pressure in the airbag can be controlled as needed, for example: it can be controlled to 20kPa, 25kPa, 30kPa, 35, etc.

[0141] When using the deflation module to deflate, the air pressure in the deflated airbag can also be controlled within a smaller pressure range according to the first air pressure sensor. For example, the air pressure of the airbag after deflation can be 0-5kPa. When the airbag is deflated, when the pressure value output by the first air pressure sensor reaches this pressure range, deflation is stopped.

[0142] In one embodiment of the present invention, the detection module is used to detect the blood volume wave of the treatment site in real time and send the blood volume wave to the control module;

[0143] The control module is used to receive the blood volume wave sent by the detection module in real time, process the blood volume wave in real time, and when the rising edge of the blood volume wave is determined, control the deflation module to extract the gas in the airbag; when the first flat section after the rising edge of the blood volume wave is determined, control the inflation module to inflate the airbag.

[0144] In the embodiment of the present invention, the blood flow condition of the treatment site is determined by the blood volume wave of the treatment site. Figure 2 As shown, Figure 2 It is a waveform of blood volume wave. Blood volume wave is a periodic waveform. Figure 2 The blood volume wave in one cycle is shown. The vertical axis of the blood volume wave is the amount of hemoglobin, and the horizontal axis is time. As blood flows in and out of the treatment site, the amount of hemoglobin in the treatment site changes, forming the blood volume wave. When the blood volume wave is in the rising edge stage, it means that blood flows to the treatment site, and the control module controls the deflation module to extract the gas in the airbag. When the blood volume wave is in the first flat section after the rising edge, it means that blood flows back from the treatment site, and the control module controls the inflation module to inflate the airbag.

[0145] Specifically, the rising edge of the blood volume wave can be determined by:

[0146] The detection module is used to sample the hemoglobin amount of the treatment site according to a preset sampling rate and send the sampled values ​​to the control module;

[0147] The control module is used to receive the sampling values ​​sent by the detection module in real time, and determine the rising edge of the blood volume wave when the ratio of the first sampling value to the last sampling value in a first number of consecutive sampling values ​​is greater than or equal to a first threshold.

[0148] In an embodiment of the present invention, when there is a first sampling value and a last sampling value in a first number of consecutive sampling values ​​that are greater than or equal to a first threshold value, it indicates that the blood volume wave of the treatment site is at a rising edge. Specifically, after receiving each sampling value, the control module uses the sampling value as the last sampling value of the first number of consecutive sampling values ​​to determine the ratio of the sampling value to the first sampling value. For example, the first number is 10, the 10 consecutive sampling values ​​are V0-V9, and the first threshold value is 1.3, then when (V9 / V0)≥1.3, it is determined to be a rising edge.

[0149] The above method can more accurately determine the rising edge of the bleeding volume wave.

[0150] Specifically, the flat segment of the blood volume wave can be determined by:

[0151] The detection module is used to sample the hemoglobin amount of the treatment site according to a preset sampling rate and send the sampled values ​​to the control module;

[0152] The control module is used to receive the sampling values ​​sent by the detection module in real time, and when any two adjacent sampling values ​​in the second number of consecutive sampling values ​​satisfy equation 1, determine a flat segment of the blood volume wave;

[0153] Wherein, the formula 1 is:

[0154]

[0155] Among them, V n+1 is the n+1th sampling value among the second number of consecutive sampling values, V n is the nth sampling value among the second number of consecutive sampling values, and q is the second threshold.

[0156] In the embodiment of the present invention, when any two adjacent sampling values ​​in the second number of consecutive sampling values ​​satisfy the above formula 1, it indicates that the blood volume wave of the treatment site is in a flat segment. When the flat segment is the first flat segment after the rising edge in a cycle, the inflation module is controlled to inflate the airbag. For example, the second number is 20 and the second threshold is 0.2.

[0157] The above method can more accurately determine the flat segment in the bleeding volume wave.

[0158] In addition, the falling edge in a cycle of a blood volume wave can also be determined by:

[0159] When the ratio of the last sampling value to the first sampling value in the third number of consecutive sampling values ​​is less than or equal to the third threshold, the falling edge of the bleeding volume wave is determined.

[0160] Specifically, the third number may be 5, and the third threshold may be 0.8.

[0161] After it is determined that the blood volume wave reaches a maximum value, the falling edge of the blood volume wave may be determined.

[0162] It should be noted that the duration of the rising edge of the blood volume wave is between 100 milliseconds and 200 milliseconds, and the duration of the flat segment is greater than 100 milliseconds. Therefore, the preset sampling rate of the detection module can be set to 400 sps, that is, the number of sampling points per second is 400. The resolution of the detection module can be 12 bits.

[0163] like Figure 3 As shown, an embodiment of the present invention provides a therapeutic device, which includes:

[0164] The clamp-type volume wave sensor 1011, the control module 102, the first air storage tank 1031, the first valve 1032, the second air storage tank 1041, the second valve 1042, the air bag 105, the first air pressure sensor 301, the positive pressure pump 302, the second air pressure sensor 303, the negative pressure pump 304 and the third air pressure sensor 305;

[0165] The first gas storage tank 1031 is connected to the air bag 105 through the first valve 1032, and the first valve 1032 is connected to the control module 102;

[0166] The second gas storage tank 1041 is connected to the airbag 105 via a second valve 1042, and the second valve 1042 is connected to the control module 102;

[0167] The first air pressure sensor 301 is disposed inside the airbag, and the first air pressure sensor 301 is connected to the control module 102;

[0168] The positive pressure pump 302 is connected to the first air tank 1031, the second air pressure sensor 303 is arranged inside the first air tank 1031, and the positive pressure pump 302 and the second air pressure sensor 303 are both connected to the control module 102;

[0169] The negative pressure pump 304 is connected to the second air tank 1041, the third air pressure sensor 305 is arranged inside the second air tank 1041, and the negative pressure pump 304 and the third air pressure sensor 305 are both connected to the control module 102;

[0170] The clip-on volume wave sensor 1011 is connected to the control module 102 .

[0171] Figure 3 The working process of a treatment device shown is as follows:

[0172] The clip-on volume wave sensor samples the amount of hemoglobin in the treatment area in real time according to a preset sampling rate, and sends the sampled value to the control module;

[0173] The first air pressure sensor senses the air pressure in the airbag in real time and sends the sensed air pressure value in the airbag to the control module;

[0174] The second air pressure sensor senses the air pressure in the first air storage tank in real time, and sends the sensed air pressure value in the first air storage tank to the control module;

[0175] The third air pressure sensor senses the air pressure in the second air storage tank in real time, and sends the sensed air pressure value in the second air storage tank to the control module;

[0176] The control module receives the sampling values ​​sent by the clip-on volume wave sensor in real time, and determines the rising edge of the bleeding volume wave when the ratio of the first sampling value to the last sampling value in the first number of consecutive sampling values ​​is greater than or equal to the first threshold value, and determines a flat segment of the bleeding volume wave when any two adjacent sampling values ​​in the second number of consecutive sampling values ​​satisfy the following formula;

[0177] The control module controls the first valve to open when determining the first flat section after the rising edge of the bleeding volume wave, so that the first gas storage tank inflates the air bag; when the air pressure value in the air bag sent by the first air pressure sensor is within the first preset air pressure range, controls the first valve to close, so that the first air storage tank stops inflating the air bag;

[0178] When the control module determines the rising edge of the bleeding volume wave, the control module controls the second valve to open so that the second gas storage tank draws out the gas in the air bag, and when the air pressure value in the air bag sent by the first air pressure sensor is within the second preset air pressure range, the control module controls the second valve to close so that the second air storage tank stops drawing out the gas from the air bag;

[0179] The control module controls the positive pressure pump to inflate the first air storage tank according to the air pressure value in the first air storage tank sent by the second air pressure sensor, so that the air pressure in the first air storage tank is within a third preset air pressure range;

[0180] The control module controls the negative pressure pump to evacuate the first air storage tank according to the air pressure value in the first air storage tank sent by the third air pressure sensor, so that the air pressure in the first air storage tank is within a fourth preset air pressure range.

[0181] In an embodiment of the present invention, the airbag can be composed of a plurality of sub-airbags, and each sub-airbag is interconnected. For example, the airbag can be divided into two parts, the left and right parts, and the two parts can treat the left and right feet at the same time, or treat the left and right hands at the same time. Figure 4 As shown, Figure 4 The therapeutic device is shown treating the foot. Figure 4The clip-on volume wave sensor 1011 and the airbag 105 of the treatment device are shown in FIG.

[0182] In the embodiment of the present invention, the treatment device inflates and deflates the airbag according to the blood flow of the treatment site, which is synchronized with the blood flow of the treatment site and does not conflict with the blood flow of the treatment site. The airbag can be quickly inflated and deflated through the air storage tank, which can maximize the positive effect of helping the blood flow and minimize the negative impact on the blood flow of the treatment site.

[0183] In an embodiment of the present invention, the air pressure of the second air storage tank can be set to negative pressure, so that the airbag can be deflated quickly and the air pressure in the airbag can be made 0 or negative pressure, without causing unnecessary pressure on the treatment site.

[0184] In an embodiment of the present invention, the treatment device may further include: a driving constant current circuit for the infrared emitting LED of the clip-on volume wave sensor, wherein the driving mode of the infrared emitting LED is a 5mA constant current drive, and the constant current drive is used to reduce the influence caused by temperature. The driving constant current circuit for the infrared emitting LED is connected to the infrared emitting LED of the clip-on volume wave sensor, and is used to drive the infrared emitting LED.

[0185] The therapeutic device may also include: an infrared signal receiving and processing circuit, which includes a two-stage AC amplifier, a 50Hz power frequency filter circuit to filter out power grid interference, and a low-pass filter to filter out frequency components above 80Hz. While filtering out high-frequency interference, the signal is also smoothed. The infrared signal receiving and processing circuit is connected to the external receiving tube of the clip-on volume wave sensor, and after processing the data output by the external receiving tube, it is sent to the control module.

[0186] The therapeutic device may also include: at least one valve drive circuit, which is arranged between the control module and the valve, each valve corresponds to a valve drive circuit, and the function of the valve drive circuit is to amplify the current of the control signal output by the control module to promote the solenoid valve coil of the valve to work reliably.

[0187] The therapeutic device may also include at least one sensor signal conditioning circuit, each air pressure sensor corresponds to a sensor signal conditioning circuit, and the sensor signal conditioning circuit is arranged between the air pressure sensor and the control module. The function of the sensor signal conditioning circuit is to amplify the output signal of the air pressure sensor. Specifically, a sensor signal conditioning circuit is arranged for the first air pressure sensor, the second air pressure sensor, and the third air pressure sensor.

[0188] The therapeutic device may also include four A / D conversion circuits, three of which are arranged between the sensor signal conditioning circuit and the control module, each sensor signal conditioning circuit corresponds to an A / D conversion circuit, and the three A / D conversion circuits are used to convert the analog quantity output by the sensor signal conditioning circuit into a digital quantity. Another A / D conversion circuit is arranged between the external receiving tube and the control module, and the function of the one A / D conversion circuit is to convert the signal output by the external receiving tube into an analog quantity. The sampling rate of the four A / D conversion circuits can be 400sps, and the resolution can be 12 bits.

[0189] The embodiment of the present invention further provides a method for detecting blood flow conditions at a treatment site based on the treatment device in the embodiment of the present invention, which may specifically include the following steps:

[0190] The detection module samples the amount of hemoglobin in the treatment area according to a preset sampling rate, and sends the sampled values ​​to the control module;

[0191] The control module receives the sampling values ​​sent by the detection module in real time;

[0192] When the ratio of the first sampling value to the last sampling value in the first number of consecutive sampling values ​​is greater than or equal to the first threshold, the control module determines the rising edge of the bleeding volume wave and determines that the blood flows to the treatment site;

[0193] When any two adjacent sampling values ​​in the second number of consecutive sampling values ​​satisfy equation 1, the control module determines a flat segment of the bleeding volume wave;

[0194] Wherein, the formula 1 is:

[0195]

[0196] Among them, V n+1 is the n+1th sampling value among the second number of consecutive sampling values, V n is the nth sampling value among the second number of consecutive sampling values, and q is the second threshold value;

[0197] When the determined flat segment is the first flat segment after the rising edge of the blood volume wave, the control module determines that blood flows back from the treatment site.

[0198] like Figure 5 As shown, an embodiment of the present invention provides a method for detecting blood flow conditions at a treatment site, comprising:

[0199] Step 501: acquiring the blood volume wave of the treatment site in real time;

[0200] Step 502: determining a rising edge of a blood volume wave at the treatment site;

[0201] Step 503: when the rising edge of the blood volume wave of the treatment site is determined, determining that blood flows to the treatment site;

[0202] Step 504: determining the first flat section after the rising edge of the blood volume wave;

[0203] Step 505: When the first flat section after the rising edge of the blood volume wave is determined, it is determined that blood is flowing back from the treatment site.

[0204] In one embodiment of the present invention, the real-time acquisition of the blood volume wave of the treatment site includes:

[0205] Acquiring in real time a sampling value obtained by sampling the hemoglobin amount at the treatment site according to a preset sampling rate;

[0206] Determining the rising edge of the blood volume wave at the treatment site includes:

[0207] Determine a ratio of a first sample value to a last sample value among a first number of consecutive sample values;

[0208] When the ratio of the first sampling value to the last sampling value in the first number of consecutive sampling values ​​is greater than or equal to a first threshold, the rising edge of the blood volume wave of the treatment site is determined.

[0209] In one embodiment of the present invention, the real-time acquisition of the blood volume wave of the treatment site includes:

[0210] Acquiring in real time a sampling value obtained by sampling the hemoglobin amount at the treatment site according to a preset sampling rate;

[0211] Determining the first flat section after the rising edge of the blood volume wave comprises:

[0212] Determine whether any two adjacent sampling values ​​among the second number of consecutive sampling values ​​satisfy equation 1;

[0213] Wherein, the formula 1 is:

[0214]

[0215] Among them, V n+1 is the n+1th sampling value among the second number of consecutive sampling values, V n is the nth sampling value among the second number of consecutive sampling values, and q is the second threshold value;

[0216] When any two adjacent sampling values ​​among the second number of continuous sampling values ​​satisfy the first formula, a flat segment of the blood volume wave is determined.

[0217] The present invention provides a therapeutic device having at least the following beneficial effects:

[0218] 1. In the embodiment of the present invention, the detection module detects the blood flow of the treatment site in real time and sends the detection data to the control module. When the control module determines that the blood is flowing back from the treatment site to the heart based on the detection data, the control module controls the inflation module to inflate the airbag, and the airbag squeezes the treatment site to promote the blood return of the treatment site. When the control module determines that the blood is flowing to the treatment site based on the detection data, the deflation module controls the airbag to extract the gas in the airbag to prevent the airbag from squeezing the treatment site and preventing the airbag from obstructing the blood flow. The embodiment of the present invention acts on the treatment site through the airbag based on the blood flow of the treatment site to promote the blood circulation of the treatment site, and can obtain a better treatment effect.

[0219] 2. In the embodiment of the present invention, a first valve is provided between the first gas storage tank and the airbag. When the first valve is opened, the first gas storage tank is connected to the airbag, and when the first valve is closed, the first gas storage tank is not connected to the airbag. The air pressure in the first gas storage tank is greater than the air pressure in the airbag. When the airbag needs to be inflated, the airbag can be inflated quickly due to the higher air pressure in the first gas storage tank. The greater the difference in air pressure between the first gas storage tank and the airbag, the faster the inflation speed. By adjusting the air pressure in the first gas storage tank, the airbag can be inflated quickly.

[0220] 3. In the embodiment of the present invention, a second valve is provided between the second gas storage tank and the airbag. When the second valve is opened, the second gas storage tank is connected to the airbag, and when the second valve is closed, the second gas storage tank is not connected to the airbag. The air pressure in the second gas storage tank is lower than the air pressure in the airbag. When the airbag needs to be deflated, the gas in the airbag can be quickly extracted due to the lower air pressure in the second gas storage tank. The greater the difference in air pressure between the second gas storage tank and the airbag, the faster the extraction speed. By adjusting the air pressure in the second gas storage tank, the airbag can be quickly deflated.

[0221] It is to be understood that the structure illustrated in the embodiment of the present invention does not constitute a specific limitation on the therapeutic device. In other embodiments of the present invention, the therapeutic device may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0222] It should be noted that not all steps and modules in the above-mentioned processes and system structure diagrams are necessary, and some steps or modules can be ignored according to actual needs. The execution order of each step is not fixed and can be adjusted as needed. The system structure described in the above-mentioned embodiments can be a physical structure or a logical structure, that is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or some components in multiple independent devices may be implemented together.

[0223] In the above embodiments, the hardware unit can be realized by mechanical means or electrical means. For example, a hardware unit can include permanent dedicated circuits or logic (such as special processors, FPGA or ASIC) to complete the corresponding operation. The hardware unit can also include programmable logic or circuits (such as general-purpose processors or other programmable processors), which can be temporarily set by software to complete the corresponding operation. Concrete implementation (mechanical means or dedicated permanent circuits or temporarily set circuits) can be determined based on cost and time considerations.

[0224] The present invention is shown and described in detail above through the accompanying drawings and preferred embodiments. However, the present invention is not limited to these disclosed embodiments. Based on the above multiple embodiments, those skilled in the art can know that the code review methods in the above different embodiments can be combined to obtain more embodiments of the present invention, and these embodiments are also within the protection scope of the present invention.

Claims

1. A therapeutic device, characterized in that include: Detection module, control module, inflation module, deflation module and airbag; Wherein, the detection module, the inflation module and the deflation module are all connected to the control module, and the inflation module and the deflation module are all connected to the airbag, wherein the airbag acts on the treatment site; The detection module is used to detect the blood flow of the treatment site in real time and send the detected detection data to the control module in real time; The control module is used to receive the detection data sent by the detection module in real time, process the detection data sent by the detection module in real time, and control the inflation module to inflate the airbag when it is determined according to the detection data that blood flows back from the treatment site, and control the deflation module to extract the gas in the airbag when it is determined according to the detection data that blood flows to the treatment site; Further comprising: a first air pressure sensor; The first air pressure sensor is disposed inside the airbag; The first air pressure sensor is connected to the control module; The first air pressure sensor is used to sense the air pressure in the airbag in real time and send the sensed air pressure value in the airbag to the control module; The control module is used to control the inflation module and the deflation module according to the air pressure value in the airbag sent by the first air pressure sensor; The detection module is used to detect the blood volume wave of the treatment site in real time and send the blood volume wave to the control module; The control module is used to receive the blood volume wave sent by the detection module in real time, process the blood volume wave in real time, and control the deflation module to extract the gas in the airbag when the rising edge of the blood volume wave is determined, and control the inflation module to inflate the airbag when the first flat section after the rising edge of the blood volume wave is determined; The detection module is used to sample the hemoglobin amount of the treatment site according to a preset sampling rate and send the sampled values ​​to the control module; The control module is used to receive the sampling values ​​sent by the detection module in real time, and determine the rising edge of the blood volume wave when the ratio of the first sampling value to the last sampling value in a first number of consecutive sampling values ​​is greater than or equal to a first threshold.

2. The therapeutic device according to claim 1, characterized in that The inflation module comprises: a first air storage tank and a first valve; The first gas storage tank is connected to the air bag via the first valve; The first valve is connected to the control module; The air pressure in the first air tank is greater than the air pressure in the air bag; The control module is used to control the first valve to open so that the first air tank can inflate the airbag when it is determined based on the detection data that blood is flowing back from the treatment site, and to control the first valve to close so that the first air tank can stop inflating the airbag when the air pressure in the airbag is within a first preset air pressure range.

3. The therapeutic device according to claim 1, characterized in that The deflation module comprises: a second gas storage tank and a second valve; The second gas storage tank is connected to the air bag via the second valve; The second valve is connected to the control module; The air pressure in the second air storage tank is lower than the air pressure in the air bag; The control module is used to control the second valve to open so that the second gas storage tank can extract the gas in the airbag when it is determined according to the detection data that blood flows to the treatment site, and to control the second valve to close so that the second gas storage tank can stop extracting the gas from the airbag when the air pressure in the airbag is within a second preset air pressure range.

4. The therapeutic device according to claim 2, characterized in that Further comprising: a positive pressure pump and a second air pressure sensor; The positive pressure pump is connected to the first gas storage tank; The second air pressure sensor is arranged inside the first air storage tank; The positive pressure pump and the second air pressure sensor are both connected to the control module; The second air pressure sensor is used to sense the air pressure in the first air storage tank in real time, and send the sensed air pressure value in the first air storage tank to the control module; The control module is used to control the positive pressure pump to inflate the first air storage tank according to the air pressure value in the first air storage tank sent by the second air pressure sensor, so that the air pressure in the first air storage tank is within a third preset air pressure range.

5. The therapeutic device according to claim 2, characterized in that Further comprising: a negative pressure pump and a third air pressure sensor; The negative pressure pump is connected to the second air storage tank; The third air pressure sensor is arranged inside the second air storage tank; The negative pressure pump and the third air pressure sensor are both connected to the control module; The third air pressure sensor is used to sense the air pressure in the second air storage tank in real time, and send the sensed air pressure value in the second air storage tank to the control module; The control module is used to control the negative pressure pump to evacuate the first gas storage tank according to the air pressure value in the first gas storage tank sent by the third air pressure sensor, so that the air pressure in the first gas storage tank is within a fourth preset air pressure range.

6. The therapeutic device according to claim 1, characterized in that The detection module is used to sample the hemoglobin amount of the treatment site according to a preset sampling rate and send the sampled values ​​to the control module; The control module is used to receive the sampling values ​​sent by the detection module in real time, and when any two adjacent sampling values ​​in the second number of consecutive sampling values ​​satisfy equation 1, determine a flat segment of the blood volume wave; Wherein, the formula 1 is: Among them, V n+1 is the n+1th sampling value among the second number of consecutive sampling values, V n is the nth sampling value among the second number of consecutive sampling values, and q is the second threshold.

7. A system for detecting blood flow in a treatment area applied to a treatment device as claimed in any one of claims 1 to 6, characterized in that: include: Obtain the blood volume wave of the treatment site in real time; determining a rising edge of a blood volume wave at the treatment site; When the rising edge of the blood volume wave of the treatment site is determined, it is determined that the blood flows to the treatment site, so that the control module controls the deflation module to extract the gas in the airbag; determining a first flat segment after a rising edge of the blood volume wave; When the first flat section after the rising edge of the blood volume wave is determined, it is determined that blood is flowing back from the treatment site, so that the control module controls the inflation module to inflate the airbag.

8. The system for detecting blood flow at a treatment site according to claim 7, characterized in that: The real-time acquisition of the blood volume wave of the treatment site includes: Acquiring in real time a sampling value obtained by sampling the hemoglobin amount at the treatment site according to a preset sampling rate; Determining the rising edge of the blood volume wave at the treatment site includes: Determine a ratio of a first sample value to a last sample value among a first number of consecutive sample values; When the ratio of the first sampling value to the last sampling value in the first number of consecutive sampling values ​​is greater than or equal to a first threshold, determining a rising edge of the blood volume wave of the treatment site; and / or, The real-time acquisition of the blood volume wave of the treatment site includes: Acquiring in real time a sampling value obtained by sampling the hemoglobin amount at the treatment site according to a preset sampling rate; Determining the first flat section after the rising edge of the blood volume wave comprises: Determine whether any two adjacent sampling values ​​among the second number of consecutive sampling values ​​satisfy equation 1; Wherein, the formula 1 is: Among them, V n+1 is the n+1th sampling value among the second number of consecutive sampling values, V n is the nth sampling value among the second number of consecutive sampling values, and q is the second threshold value; When any two adjacent sampling values ​​among the second number of continuous sampling values ​​satisfy the first formula, a flat segment of the blood volume wave is determined.

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