Intermittent pneumatic compression device and pressure measurement method

Abstract

The present invention provides an intermittent pneumatic compression device and a pressure measurement method, comprising: an inflatable bladder, a pressure measurement module and a controller; wherein, the pressure measurement module includes: an actual force measurement unit and an inflation pressure measurement unit, and the controller includes a pressure adjustment module; the actual force measurement unit is used to measure the actual force applied to the user's limb and store the baseline actual force range of the user; the inflation pressure measurement unit is used to measure the inflation pressure exerted by the gas in the inflatable bladder on the surface of the user's limb and store the baseline inflation pressure range of the user; the pressure adjustment module is used to adjust the inflation pressure in real time based on a pre-determined functional variation relationship between the actual force and the inflation pressure, so as to keep the actual force within the baseline actual force range. The present invention can adjust the inflation pressure in real time according to the actual force of the IPC device, improving the problem that the output pressure of the IPC device remains fixed.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an intermittent pneumatic compression device and a pressure measurement method. Background Art

[0002] Deep Vein Thrombosis (DVT) is a vascular disease, which refers to the abnormal coagulation of blood in the deep veins of the lower extremities, forming a thrombus, thus hindering the normal flow of blood; it usually occurs in the deep veins of the lower extremities, especially the calf or thigh veins. If not treated in time, the embolism may fall off and cause Pulmonary Embolism (PE), seriously endangering the patient's life safety. Therefore, the prevention and treatment of DVT are of great importance.

[0003] Common DVT prevention methods include: basic prevention, physical prevention, and anticoagulant drug prevention. Among them, DVT physical prevention mainly promotes venous blood return and reduces blood stasis through external force methods, thereby reducing the risk of DVT formation, and is especially suitable for elderly patients who are bedridden for a long time, postoperative bedridden patients, and other patients who are at high risk of bleeding and cannot be anticoagulated for prevention.

[0004] The most commonly used in physical prevention is the Intermittent Pneumatic Compression (IPC) device. By applying periodic pressure to the lower extremities, it helps to promote venous return and reduce leg swelling, prevent deep vein thrombosis, control lymphedema, and treat leg venous ulcers. However, the IPC devices commonly used in clinical practice will no longer inflate after the applied force on the leg reaches a certain value in the initial stage, and the pressure value of each subsequent inflation remains at the initial level without change. During the use process, phenomena such as leg sleeve loosening and poor adhesion may occur, and the fixed pressure value will directly affect the actual force exerted by the IPC on the patient's leg. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an intermittent pneumatic compression device and a pressure measurement method, which can adjust the inflation pressure in real time according to the actual force of the IPC device, and improve the problem that the output pressure of the IPC device remains fixed.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present invention is as follows:

[0007] In a first aspect, the present invention provides an intermittent pneumatic compression device, comprising: an inflatable bladder, a pressure measurement module, and a controller; wherein, the pressure measurement module includes: an actual force measurement unit and an inflation pressure measurement unit, and the controller includes a pressure adjustment module; the actual force measurement unit is configured to measure the actual force applied to the user's limb and store the baseline actual force range of the user; the inflation pressure measurement unit is configured to measure the inflation pressure exerted by the gas in the inflatable bladder on the surface of the user's limb and store the baseline inflation pressure range of the user; the pressure adjustment module is configured to adjust the inflation pressure in real time based on a pre-determined functional variation relationship between the actual force and the inflation pressure, so as to keep the actual force within the baseline actual force range.

[0008] Optionally, the actual force measurement unit includes: a force sensor; during the measurement, the force sensor is disposed between the inflatable bladder and the limb surface, and the sensing surface of the force sensor is in direct contact with the limb surface; the inflation pressure measurement unit includes: a pressure sensor disposed on the inflatable bladder.

[0009] Optionally, the controller further includes: a baseline pressure setting module, configured to set the baseline actual force range and the corresponding baseline inflation pressure range of the user.

[0010] Optionally, the baseline pressure setting module is specifically configured to: after the user correctly wears the intermittent pneumatic compression device, inflate the inflatable bladder for the first time, and stop inflating when the measured actual force reaches a first preset value, and obtain the actual force and inflation pressure during the first inflation, and after a first preset time, deflate the inflatable bladder for the first time, and obtain the actual force and inflation pressure during the first deflation; inflate the inflatable bladder for the second time, and stop inflating when the measured actual force reaches a second preset value, and obtain the actual force and inflation pressure during the second inflation, and after a first preset time, deflate the inflatable bladder for the second time, and obtain the actual force and inflation pressure during the second deflation; inflate the inflatable bladder for the third time, and stop inflating when the measured actual force reaches a third preset value, and obtain the actual force and inflation pressure during the third inflation, and after a first preset time, deflate the inflatable bladder for the third time, and obtain the actual force and inflation pressure during the third deflation; inflate the inflatable bladder for the fourth time, and stop inflating when the measured actual force reaches a fourth preset value, and obtain the actual force and inflation pressure during the fourth inflation, and after a first preset time, deflate the inflatable bladder for the fourth time, and obtain the actual force and inflation pressure during the fourth deflation; perform data fitting based on the actual force and inflation pressure obtained from the four inflations and deflations to determine the baseline actual force range and the corresponding baseline inflation pressure range, and determine the relationship model between the baseline actual force and the baseline inflation pressure.

[0011] Optionally, the baseline pressure setting module is further configured to: verify the relationship model between the baseline actual acting force and the baseline inflation pressure, and establish an individualized pressure measurement model after the verification passes; wherein, the individualized pressure measurement model is used to characterize the functional change relationship between the actual acting force and the inflation pressure; the verification process includes: inflating the inflatable bag to the baseline inflation pressure setting value, and determining whether the current actual acting force reaches the range of the baseline actual acting force. If it reaches, the verification passes; the baseline inflation pressure setting value is calculated by the individualized pressure measurement model.

[0012] Optionally, the controller further includes: a pressure feedback module, configured to monitor the change trend of the individualized pressure measurement model at every second preset time during the operation of the intermittent inflation and compression device, and perform real-time pressure feedback.

[0013] Optionally, the controller further includes: a real-time pressure monitoring module, configured to monitor whether the actual acting force reaches the range of the baseline actual acting force, and monitor the time percentage when the actual acting force reaches the range of the baseline actual acting force.

[0014] Optionally, the real-time pressure monitoring module is further configured to: based on the individualized pressure measurement model, display the change relationship and change trend between the actual acting force and the inflation pressure in real time.

[0015] Optionally, the intermittent inflation and compression device further includes: an integrated leg sleeve structure, an air pump, and a control device; wherein, the inflatable bag and the pressure measurement module are arranged inside the integrated leg sleeve structure, the controller and the air pump are arranged inside the control device, and the control device further includes a display; the inflatable bag further includes: an air charging pipe, and the air charging pipe is connected to the air pump inside the control device. The air charging pipe includes: an inlet pipe and an outlet pipe.

[0016] In a second aspect, the present invention provides a pressure measurement method, which is applied to the intermittent inflation and compression device according to any one of the first aspect, and includes: measuring the actual acting force applied to the user's limb through the actual acting force measurement unit; measuring the inflation pressure applied to the surface of the user's limb by the gas in the inflatable bag through the inflation pressure measurement unit; adjusting the inflation pressure in real time through the pressure adjustment module based on the pre-determined functional change relationship between the actual acting force and the inflation pressure, so that the actual acting force is maintained within the range of the baseline actual acting force.

[0017] The present invention brings the following beneficial effects:

[0018] The above-mentioned intermittent pneumatic compression device and pressure measurement method provided by the present invention include: an inflatable bag, a pressure measurement module, and a controller; wherein, the pressure measurement module includes: an actual force measurement unit and an inflation pressure measurement unit, and the controller includes a pressure adjustment module; the actual force measurement unit is used to measure the actual force applied to the user's limb and store the baseline actual force range of the user; the inflation pressure measurement unit is used to measure the inflation pressure of the gas in the inflatable bag applied to the surface of the user's limb and store the baseline inflation pressure range of the user; the pressure adjustment module is used to adjust the inflation pressure in real time based on the pre-determined functional relationship between the actual force and the inflation pressure, so that the actual force remains within the baseline actual force range. The above-mentioned intermittent pneumatic compression device can monitor the actual force applied to the user's limb and the inflation pressure in real time through the actual force measurement unit and the inflation pressure measurement unit, and can adjust the inflation pressure in real time according to the pre-determined functional relationship between the actual force and the inflation pressure, so that the actual force remains within the baseline actual force range, improving the problem that the output pressure of the IPC device remains constant.

[0019] Other features and advantages of the present invention will be described in the following specification, and, in part, will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are realized and obtained by the structures specifically pointed out in the specification, the claims, and the drawings.

[0020] To make the above objectives, features, and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, is described in detail as follows. Description of the Drawings

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a structural block diagram of an intermittent pneumatic compression device provided by an embodiment of the present invention;

[0023] Figure 2 It is a structural block diagram of another intermittent pneumatic compression device provided by an embodiment of the present invention;

[0024] Figure 3 It is a schematic diagram of an integrated leg sleeve structure provided by an embodiment of the present invention;

[0025] Figure 4Flow chart of a pressure measurement method provided by an embodiment of the present invention;

[0026] Figure 5 Schematic flow diagram of each module of an intermittent pneumatic compression device provided by an embodiment of the present invention.

[0027] Icon:

[0028] 10 - Inflatable bag; 20 - Pressure measurement module; 30 - Controller; 201 - Actual force measurement unit; 202 - Inflation pressure measurement unit; 301 - Pressure adjustment module; 302 - Baseline pressure setting module; 303 - Pressure feedback module; 304 - Pressure real-time monitoring module. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Currently, the commonly used IPC devices in clinical practice have the following problems: (1) There are only three sizes of leg sleeves, large, medium, and small. During actual use, phenomena such as leg sleeve loosening and poor adhesion may occur; (2) The air pressure applied to the leg by the IPC device at the initial stage reaches a certain value and then stops inflating. The pressure value of each subsequent inflation remains at the initial level and does not change. During use, phenomena such as leg sleeve loosening and poor adhesion may occur. The fixed pressure value will directly affect the actual force exerted by the IPC on the patient's leg; (3) The true pressure level exerted on the user's leg during the use of the IPC device cannot be reflected, and the actual effect of the IPC cannot be evaluated; (4) The electric air pump device supporting the IPC is relatively large in size and is only applicable to medical scenarios, unable to meet the use requirements of users after discharge and going home.

[0031] Based on this, an intermittent pneumatic compression device and a pressure measurement method provided by an embodiment of the present invention can adjust the inflation pressure in real time according to the actual force of the IPC device, improving the problem of the fixed output pressure of the IPC device.

[0032] For the convenience of understanding this embodiment, first, an intermittent pneumatic compression device disclosed in an embodiment of the present invention will be introduced in detail. Refer to Figure 1The structural block diagram of an intermittent pneumatic compression device is shown, indicating that the device mainly includes the following parts: an inflatable bladder 10, a pressure measurement module 20, and a controller 30; among them, the pressure measurement module 20 includes: an actual force measurement unit 201 and an inflation pressure measurement unit 202, and the controller 30 includes a pressure adjustment module 301.

[0033] The actual force measurement unit 201 is used to measure the actual force applied to the user's limb and store the baseline actual force range of the user. Specifically, the actual force measurement unit 201 includes: a force sensor; during the measurement process, the force sensor is disposed between the inflatable bladder and the limb surface, and the sensing surface of the force sensor is in direct contact with the limb surface.

[0034] In a specific implementation, the actual force measurement unit 201 (i.e., the skin surface pressure detection unit) is mainly used to measure the force actually applied by the IPC device to the user's calf. By placing the force sensor between the gas in the inflatable bladder and the limb surface, its sensing surface can be in direct contact with the limb surface, thereby measuring the actual force exerted by the gas in the inflatable bladder on the limb surface.

[0035] The inflation pressure measurement unit 202 is used to measure the inflation pressure exerted by the gas in the inflatable bladder on the user's limb surface and store the baseline inflation pressure range of the user. Specifically, the inflation pressure measurement unit 202 includes: a pressure sensor disposed on the inflatable bladder.

[0036] In a specific implementation, the inflation pressure measurement unit 202 (i.e., the gas pressure detection unit in the inflatable bladder) measures the gas pressure in the inflatable bladder through the pressure sensor to reflect the inflation pressure of the IPC device.

[0037] The pressure adjustment module 301 is used to adjust the inflation pressure in real time based on a pre-determined functional variation relationship between the actual force and the inflation pressure, so as to keep the actual force within the baseline actual force range.

[0038] In a specific implementation, if it is detected that the actual force deviates from the set baseline actual force range, the inflation pressure can be automatically adjusted based on a pre-determined functional variation relationship between the actual force and the inflation pressure to ensure that the actual force always remains within the baseline actual force range. Specifically, the computer program of the pressure adjustment module 301 is fed back in real time according to the actual force sensed by the skin surface pressure detection unit on the calf in real time, and the gas pressure in the inflatable bladder is adjusted in real time to continuously achieve the dynamic calibration balance between the two, so as to achieve the purpose of real-time dynamic adjustment of the gas pressure in the inflatable bladder.

[0039] In the embodiments of the present invention, a pressure adjustment range can be set (i.e., the actual baseline force range, for example: baseline pressure ± 3 mmHg). For example, if the baseline pressure is 40 mmHg, the actual baseline force range should be between 37 and 43 mmHg. When the actual force exceeds the value of this adjustment range (for example, below 37 mmHg or above 43 mmHg), an adjustment to the gas pressure in the inflatable bladder is triggered. The computer program of the pressure adjustment module 301 can automatically monitor the current actual force every 5 minutes and compare it with the set actual baseline force range. If the current actual force exceeds the range of ± 3 mmHg, the inflation or deflation mechanism of the airbag is activated to dynamically adjust the inflation pressure.

[0040] The intermittent inflation and compression device provided by the present invention can monitor the actual force applied to the user's limb and the inflation pressure in real time through the actual force measurement unit and the inflation pressure measurement unit, and can adjust the inflation pressure in real time according to the actual force, improving the problem that the pressure of the IPC device remains constant.

[0041] In one embodiment, as shown in Figure 2 the above-mentioned controller 30 further includes: a baseline pressure setting module 302 for setting the actual baseline force range of the user and the corresponding baseline inflation pressure range.

[0042] In specific implementation, after the user wears the IPC device, by inflating and deflating the inflatable bladder multiple times and recording the actual force and inflation pressure during the inflation and deflation processes, the baseline pressure setting module 302 can set the actual baseline force range of the user and the corresponding baseline inflation pressure range according to the recorded actual force and inflation pressure data.

[0043] Specifically, the process for the baseline pressure setting module 302 to set the actual baseline force range of the user and the corresponding baseline inflation pressure range is as shown in (1)-(6) below:

[0044] (1) After the user correctly wears the intermittent inflation and compression device, the inflatable bladder is inflated for the first time, and inflation is stopped when the measured actual force reaches the first preset value. The actual force and inflation pressure of the first inflation are obtained. And after the first preset time, the inflatable bladder is deflated for the first time, and the actual force and inflation pressure of the first deflation are obtained.

[0045] In specific implementation, the user wears the IPC device and ensures that the IPC device is correctly worn on the user's calf, with the inflatable bladder aligned with the target area. After the IPC device is worn, the IPC device is activated and the system starts to run, entering the pressure test and adjustment stage. First, the inflatable bladder is inflated for the first time, and the pressure inside the inflatable bladder is gradually increased through inflation; when the actual force measurement unit 201 measures that the actual force is 40 mmHg (i.e., the first preset value), inflation stops, and the actual force and inflation pressure of the first inflation are recorded, that is, the actual force measurement unit 201 records the actual force applied to the user's limb surface, and the inflation pressure measurement unit 202 records the actual inflation pressure value after the inflatable bladder is inflated.

[0046] Furthermore, after the first preset time (such as 11 seconds), the inflatable bladder is deflated for the first time to reduce the pressure inside the bladder. The pressure measurement module 20 records the actual force and inflation pressure of the first deflation, that is, the actual force measurement unit 201 records the actual force applied to the user's limb surface, and the inflation pressure measurement unit 202 records the inflation pressure value after the inflatable bladder is deflated.

[0047] (2) The inflatable bladder is inflated for the second time, and inflation stops when the measured actual force reaches the second preset value. The actual force and inflation pressure of the second inflation are obtained, and after the first preset time, the inflatable bladder is deflated for the second time to obtain the actual force and inflation pressure of the second deflation.

[0048] In specific implementation, when the inflatable bladder is inflated for the second time, when the actual force measurement unit 201 measures that the actual force is 45 mmHg (i.e., the second preset value), inflation stops, and the actual force and inflation pressure of the second inflation are recorded. After maintaining for a period of time (i.e., the first preset time), the second deflation starts, and the pressure measurement module 20 records the actual force and inflation pressure of the second deflation.

[0049] (3) The inflatable bladder is inflated for the third time, and inflation stops when the measured actual force reaches the third preset value. The actual force and inflation pressure of the third inflation are obtained, and after the first preset time, the inflatable bladder is deflated for the third time to obtain the actual force and inflation pressure of the third deflation.

[0050] In specific implementation, when the inflatable bladder is inflated for the third time, when the actual force measurement unit 201 measures that the actual force is 48 mmHg (i.e., the third preset value), inflation stops, and the actual force and inflation pressure of the third inflation are recorded. After maintaining for a period of time (i.e., the first preset time), the third deflation starts, and the pressure measurement module 20 records the actual force and inflation pressure of the third deflation.

[0051] (4)Perform the fourth inflation on the inflatable bag, stop inflation when the measured actual force reaches the fourth preset value, obtain the actual force and inflation pressure of the fourth inflation, and after the first preset time, perform the fourth deflation on the inflatable bag, and obtain the actual force and inflation pressure of the fourth deflation.

[0052] In specific implementation, repeat the inflation and deflation processes again to ensure that the pressure change between inflation and deflation is clearly measurable. Specifically, perform the fourth inflation on the inflatable bag. When the actual force measurement unit 201 measures that the actual force is 50 mmHg (i.e., the fourth preset value), stop inflation and record the actual force and inflation pressure of the fourth inflation. After maintaining for a period of time (i.e., the first preset time), start the fourth deflation, and the pressure measurement module 20 records the actual force and inflation pressure of the fourth deflation.

[0053] In the embodiment of the present invention, during the inflation process, inflation is performed at regular intervals according to the set computer program to make the actual force reach the preset value set in advance; during the deflation process, the step-by-step pressure reduction method is adopted. Within the preset time, the air pressure of the inflatable bag is gradually reduced from the current inflation pressure recorded by the inflation pressure measurement unit 202. For example: within 11 seconds, the air pressure of the inflatable bag is gradually reduced from the current inflation pressure of 40 mmHg to 90% (36 mmHg), 80% (32 mmHg), 70% (28 mmHg), and 60% (24 mmHg) of the current inflation pressure, and the air pressure is kept stable.

[0054] (5)Based on the actual forces and inflation pressures obtained from the four inflations and deflations, perform data fitting to determine the baseline actual force range and the corresponding baseline inflation pressure range, and determine the relationship model between the baseline actual force and the baseline inflation pressure.

[0055] In specific implementation, perform data fitting according to the measurement results during the four inflations and deflations (including: the actual forces and inflation pressures during the four inflations and deflations), analyze the relationship between the actual force and the inflation pressure, and specifically, the relationship between the actual force and the inflation pressure can be deduced through linear regression or other mathematical models. During the data fitting process, for the relationship between a single force sensor and the inflation pressure, it satisfies . Wherein, F(t) is the inflation pressure, K is the linear coefficient, P(t) is the actual force, and F_base is the initial force value of the inflation pressure. For multiple measurements of inflation to the preset value, the change in its value should fluctuate within a range. For values outside the range, it can be considered that the value is inaccurate. In this embodiment, data screening can be performed according to the 3δ principle.

[0056] Furthermore, in the embodiments of the present invention, when the baseline actual acting force is 40 mmHg, the appropriate range of the inflation pressure (i.e., the baseline inflation pressure range) can be set. This range is obtained through measurement and analysis and is usually within a certain error range (e.g., ±3 mmHg), so as to ensure that the user is always in a safe and effective treatment pressure range. Of course, there is usually a certain numerical fluctuation in the baseline actual acting force, that is, the baseline actual acting force range (the error range is ±3 mmHg). Furthermore, a relationship model between the baseline actual acting force and the baseline inflation pressure is determined, and the baseline actual acting force range is stored in the actual acting force measurement unit 201 and the baseline inflation pressure range is stored in the inflation pressure measurement unit 202.

[0057] In the embodiments of the present invention, setting the baseline actual acting force range and the baseline inflation pressure range has the following advantages: (1) Safety: The set baseline inflation pressure range meets the medical safety standards and can avoid discomfort or injury to the user caused by excessive inflation pressure. Through the baseline inflation pressure range, the change range of the gas pressure value in the inflation bag can be understood, and the maximum gas pressure value in the inflation bag can be calculated. During actual use, it cannot exceed the preset limit to prevent over-inflation from harming the user. If the gas pressure value in the inflation bag exceeds the preset limit and the actual acting force measurement unit still does not reach the target value (e.g., 40 mmHg), the alarm program is started, and it is necessary to check whether the airbag wraps the calf tightly and verify again whether the inflation pressure range is appropriate to avoid harming the user. (2) Accuracy: Adjusting the inflation pressure according to the numerical change of the actual acting force can achieve a more accurate pressure acting on the calf part.

[0058] (6) Verify the relationship model between the baseline actual acting force and the baseline inflation pressure, and establish an individualized pressure measurement model after the verification passes; wherein, the individualized pressure measurement model is used to characterize the functional change relationship between the actual acting force and the inflation pressure.

[0059] In specific implementation, after the baseline actual acting force range and the baseline inflation pressure range are set, a test is carried out again, that is, the relationship between the baseline actual acting force and the baseline inflation pressure is inversely verified. The verification process includes: inflating the inflation bag to the set value of the baseline inflation pressure (calculated by the individualized pressure measurement model), and judging whether the current actual acting force reaches the baseline actual acting force range. If it reaches, the verification passes.

[0060] Specifically, first, according to the actual force required by the user, the baseline inflation pressure setting value is calculated based on the individualized pressure measurement model; then, the inflation bag is inflated. When the inflation pressure reaches the baseline inflation pressure setting value (for example, 40 mmHg), the actual force measurement unit 201 measures the current actual force, and it is determined whether the current actual force can reach the baseline actual force range, that is, the range of 40 mmHg ± 3 mmHg. If the verification is successful, the computer program of the baseline pressure setting module 302 automatically records the individualized pressure measurement model, that is, the functional change relationship between the actual force and the inflation pressure. For each user, the computer program calculates the individualized pressure measurement model.

[0061] In the embodiment of the present invention, since the relationship between the actual force of an individual and the inflation pressure satisfies the following formula: , where F(t) is the inflation pressure, P(t) is the actual force, and W, C, and M correspond to the physiological characteristic parameters of different individuals, namely body weight, leg circumference, and muscle hardness. Through a large number of experiments on people with different body weights W, leg circumferences C, and muscle hardnesses M, the physiological characteristics W, C, M and the F(t), P(t) values of the sensor are recorded in the experiment, and K(W, C, M) and F_base(W, C, M) are obtained by the method of data fitting, so as to obtain the function . In subsequent treatments, this function can be used to obtain the F(t) value during the treatment at this time after measuring P(t), and then this value is compared with the ideal F value of the treatment effect.

[0062] In one embodiment, as shown in Figure 2 , the above-mentioned controller 30 further includes: a pressure feedback module 303, which is used to monitor the change trend of the individualized pressure measurement model at every second preset time during the operation of the intermittent inflation and compression device, and perform real-time pressure feedback. In specific implementation, during the operation of the IPC device, the change trend of the individualized pressure measurement model can be automatically monitored every 5 minutes for real-time pressure feedback.

[0063] In one embodiment, as shown in Figure 2 , the above-mentioned controller 30 further includes: a pressure real-time monitoring module 304, which is used to monitor whether the actual force reaches the baseline actual force range, and monitor the time percentage when the actual force reaches the baseline actual force range, and based on the individualized pressure measurement model, display the change relationship and change trend between the actual force and the inflation pressure in real time.

[0064] In specific implementation, according to the force sensor data of the actual force measurement unit 201, it is possible to monitor in real time whether the skin surface pressure (i.e., the actual force) meets the standard (whether the actually felt actual force reaches the baseline actual force range), as well as the percentage of the time when the standard is met; in the embodiment of the present invention, the controller 30 can be connected to a display, and the pressure real-time monitoring module 304 can use the display to display the change curve of the individualized pressure measurement model, and display in real time the change relationship and trend between the actual force and the inflation pressure, so as to achieve real-time feedback and real-time evaluation of the IPC effect. In the embodiment of the present invention, the IPC device can monitor in real time the actual effect state of the user applying the IPC device to ensure the continuous effectiveness and comfort of the treatment.

[0065] In one implementation, as shown in Figure 3 the intermittent pneumatic compression device further includes: an integrated leg sleeve structure, an air pump, and a control device; wherein, the air bag and the pressure measurement module are arranged inside the integrated leg sleeve structure, the controller and the air pump are arranged inside the control device, and the control device further includes a display; the air bag further includes: an air pipe, and the air pipe is connected to the air pump inside the control device, and the air pipe includes: an inlet pipe and an outlet pipe.

[0066] In specific implementation, the integrated leg sleeve design can completely wrap the entire calf of the user, without being affected by the looseness and poor connection of the adhesive leg sleeve. At the same time, the volume of the IPC device is reduced, which is convenient for popularization to the home use scenario, and a battery can be installed, which is convenient for carrying around and is not affected by the presence or absence of a power source.

[0067] For the intermittent pneumatic compression device provided in the above embodiment of the present invention, the integrated leg sleeve design reduces the problems of poor connection and easy looseness of the adhesive leg sleeve; adjusts the IPC inflation pressure in real time according to the actual force of the leg contacting the IPC, solves the problem that the output pressure of the IPC device is fixed, and ensures that the IPC continuously and effectively acts on the calf; the screen displays in real time the change curve of the relationship between the IPC actual force and the IPC inflation pressure, and evaluates the IPC action time and effect; reduces the volume of the IPC device, is convenient for carrying, and can be popularized to the home scenario.

[0068] For the intermittent pneumatic compression device provided in the foregoing embodiment, the present invention also provides a pressure measurement method, as shown in Figure 4 which mainly includes the following steps S401 to S403:

[0069] Step S401: Measure the actual force applied to the user's limb through the actual force measurement unit;

[0070] Step S402: Measure the inflation pressure of the gas in the air bag applied to the surface of the user's limb through the inflation pressure measurement unit;

[0071] Step S403: The inflation pressure is adjusted in real time by the pressure adjustment module based on the function variation relationship between the pre-determined actual acting force and the inflation pressure, so as to keep the actual acting force within the range of the baseline actual acting force.

[0072] In specific implementation, before the pressure adjustment module 301 performs pressure adjustment, it is necessary to set the user's baseline actual acting force range and the corresponding baseline inflation pressure range according to the recorded actual acting force and inflation pressure data through the baseline pressure setting module 302; during the operation of the intermittent inflation and pressurization device, the pressure feedback module 303 can monitor the change trend of the individualized pressure measurement model every second preset time interval and perform real-time pressure feedback; meanwhile, the pressure real-time monitoring module 304 can monitor whether the actual acting force reaches the baseline actual acting force range during the operation of the inflation and pressurization device, and monitor the time percentage when the actual acting force reaches the baseline actual acting force range, and based on the individualized pressure measurement model, display the change relationship and change trend between the actual acting force and the inflation pressure in real time, as specifically shown in Figure 5 the figure.

[0073] The above pressure detection method provided by the present invention can monitor the actual acting force applied to the user's limb and the inflation pressure in real time through the actual acting force measurement unit and the inflation pressure measurement unit, and can adjust the inflation pressure in real time according to the magnitude of the actual acting force, improving the problem that the output pressure of the IPC device remains fixed.

[0074] It should be noted that for the method provided by the embodiments of the present invention, its implementation principle and the generated technical effects are the same as those of the foregoing device embodiments. For the sake of brief description, for the parts not mentioned in the method embodiments, reference can be made to the corresponding content in the foregoing device embodiments. The specific values provided in the embodiments of the present invention are only exemplary and are not limited herein.

[0075] Finally, it should be noted that: the above embodiments are only specific implementation manners of the present invention, used to illustrate the technical solutions of the present invention, rather than limiting it. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present invention can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements for some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An intermittent pneumatic compression device, characterized in that, Comprising: An inflatable bag, a pressure measurement module, and a controller; wherein, the pressure measurement module includes: an actual force measurement unit and an inflation pressure measurement unit, and the controller includes: a pressure adjustment module and a baseline pressure setting module; The actual force measurement unit is used to measure the actual force applied to the user's limb and store the user's baseline actual force range; The inflation pressure measurement unit is used to measure the inflation pressure exerted by the gas in the inflatable bag on the user's limb surface and store the user's baseline inflation pressure range; The baseline pressure setting module is used to set the user's baseline actual force range and the corresponding baseline inflation pressure range; wherein, the baseline pressure setting module is specifically used to perform data fitting based on the measurement results during four inflation and deflation processes, analyze the relationship between the actual force and the inflation pressure, determine the user's baseline actual force range and the corresponding baseline inflation pressure range, as well as the relationship model between the baseline actual force and the baseline inflation pressure; the measurement results during the four inflation and deflation processes include: the actual force and the inflation pressure during the four inflation and deflation processes; during the inflation process, inflate at regular intervals according to a set computer program to make the actual force reach a preset value; during the deflation process, adopt a step-by-step pressure reduction method to gradually reduce the air pressure in the inflatable bag from the current inflation pressure recorded by the inflation pressure measurement unit within a preset time; The pressure adjustment module is used to adjust the inflation pressure in real time based on the pre-determined function change relationship between the actual force and the inflation pressure, so that the actual force remains within the baseline actual force range.

2. The device according to claim 1, characterized in that, The actual force measurement unit includes: a force sensor; during the measurement, the force sensor is arranged between the inflatable bag and the limb surface, and the sensing surface of the force sensor is in direct contact with the limb surface; The inflation pressure measurement unit includes: a pressure sensor arranged on the inflatable bag.

3. The device according to claim 1, wherein The baseline pressure setting module is specifically used for: After the user correctly wears the intermittent pneumatic compression device, inflate the inflatable bag for the first time, and stop inflating when the measured actual force reaches the first preset value, obtain the actual force and inflation pressure of the first inflation, and after the first preset time, deflate the inflatable bag for the first time, obtain the actual force and inflation pressure of the first deflation; Inflate the inflatable bag for the second time, stop inflating when the measured actual force reaches the second preset value, obtain the actual force and inflation pressure of the second inflation, and after the first preset time, deflate the inflatable bag for the second time, obtain the actual force and inflation pressure of the second deflation; Inflate the inflatable bag for the third time, stop inflating when the measured actual force reaches the third preset value, obtain the actual force and inflation pressure of the third inflation, and after the first preset time, deflate the inflatable bag for the third time, obtain the actual force and inflation pressure of the third deflation; Perform the fourth inflation on the inflatable bladder, stop inflation when the measured actual force reaches the fourth preset value, obtain the actual force and inflation pressure of the fourth inflation, and after the first preset time, perform the fourth deflation on the inflatable bladder, and obtain the actual force and inflation pressure of the fourth deflation; Based on the actual forces and inflation pressures obtained from the four inflations and deflations, perform data fitting to determine the baseline actual force range and the corresponding baseline inflation pressure range, and determine the relationship model between the baseline actual force and the baseline inflation pressure.

4. The device according to claim 3, characterized in that, The baseline pressure setting module is further configured to: verify the relationship model between the baseline actual force and the baseline inflation pressure, and establish an individualized pressure measurement model after the verification passes; wherein, the individualized pressure measurement model is used to characterize the functional change relationship between the actual force and the inflation pressure; the verification process includes: inflating the inflatable bladder to the baseline inflation pressure setting value, and determining whether the current actual force reaches the baseline actual force range, if it reaches, the verification passes; the baseline inflation pressure setting value is calculated by the individualized pressure measurement model.

5. The device according to claim 4, characterized in that, The controller further includes: a pressure feedback module, configured to monitor the change trend of the individualized pressure measurement model at every second preset time interval during the operation of the intermittent inflation and pressurization device, and perform real-time pressure feedback.

6. The device according to claim 4, characterized in that, The controller further includes: a real-time pressure monitoring module, configured to monitor whether the actual force reaches the baseline actual force range, and monitor the time percentage when the actual force reaches the baseline actual force range.

7. The device according to claim 6, characterized in that, The real-time pressure monitoring module is further configured to: based on the individualized pressure measurement model, display the change relationship and change trend between the actual force and the inflation pressure in real time.

8. The device according to claim 1, characterized in that, The intermittent inflation and pressurization device further includes: an integrated leg sleeve structure, an air pump, and a control device; wherein, the inflatable bladder and the pressure measurement module are arranged inside the integrated leg sleeve structure, the controller and the air pump are arranged inside the control device, and the control device further includes a display; The inflatable bladder further includes: an air inlet pipe, which is connected to the air pump inside the control device, and the air inlet pipe includes: an inlet pipe and an outlet pipe.

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