Air bag inflation and deflation control device and intermittent pulse pressurization anti-thrombus system

Abstract

According to the air bag inflation and deflation control device and the intermittent pulse pressurization anti-thrombus system, an air pump inflates an air chamber firstly, so that the pressure in the air chamber is increased, and when a pressure detection circuit detects that the real-time pressure value in the air chamber reaches a target value, an instruction is sent to an air pump switch control circuit, so that the air pump stops inflating, and the air pump stops inflating; at the moment, air in the air chamber is in a high-pressure state, then an instruction is sent to the air valve switch control circuit, so that the air valve is opened, high pressure in the air chamber is controlled to rapidly enter the air bag, and rapid inflation of the air bag is achieved. The inflation time of the air bag is generally slow, so that the treatment effect of rapid pressure impact required by the sole and the palm is difficult to achieve.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to an airbag inflation and deflation control device and an intermittent pulse pressurization anti-thrombotic system. Background Art

[0002] The intermittent pulse compression anti-thrombotic system promotes blood flow and circulation by inflating and deflating the air bag, which can effectively prevent deep vein thrombosis and eliminate limb edema.

[0003] Currently, such products generally have an air pump directly connected to an air bag. The air pump inflates the air bag directly by opening the air valve. The air bag inflation time is generally slow, resulting in a technical problem that it is difficult to achieve the rapid pressurization shock therapeutic effect required for the soles of the feet and palms. Utility Model Content

[0004] The present application provides an airbag inflation and deflation control device and an intermittent pulse pressurization anti-thrombotic system, which solves the technical problem that the existing technology generally connects the air pump directly to the airbag, mainly by opening the air valve, and the air pump directly inflates the airbag. The airbag inflation time is generally slow, which makes it difficult to achieve the required rapid pressurization shock therapeutic effect on the soles of the feet and palms.

[0005] In view of this, the first aspect of the present application provides an airbag inflation and deflation control device, the device comprising:

[0006] Air pump, air chamber, air valve, air bag, air pump switch control circuit, pressure detection circuit, air valve switch control circuit and control unit;

[0007] The air pump, the air chamber and the air bag are connected in sequence through airways;

[0008] The air valve is provided between the air chamber and the air bag;

[0009] The air pump switch control circuit is used to control the opening and closing of the air pump;

[0010] The pressure detection circuit is used to detect the real-time pressure value in the air chamber;

[0011] The gas valve switch control circuit is used to control the opening and closing of the gas valve;

[0012] The air pump switch control circuit is electrically connected to the pressure detection circuit via the control unit;

[0013] The gas valve switch control circuit is electrically connected to the pressure detection circuit through the control unit.

[0014] Optionally, it further comprises: a first air release valve;

[0015] The first air release valve is connected to the air chamber through an air passage.

[0016] Optionally, it further comprises: a second air release valve;

[0017] The second deflation valve is connected to the airbag via an air passage.

[0018] Optionally, the airbag includes a left airbag and a right airbag.

[0019] Optionally, the pressure detection circuit includes:

[0020] Pressure detection sensor chip, voltage follower module and voltage comparator module;

[0021] After the pressure detection sensor chip collects the real-time pressure value in the air chamber, it is connected to the control unit through the voltage follower module and the voltage comparator module.

[0022] Optionally, the pressure detection circuit is specifically:

[0023] The output end of the pressure detection sensor chip is connected to the non-inverting input end of the first operational amplifier, and the first output end of the pressure detection sensor chip is grounded through a first capacitor;

[0024] The power supply terminal of the pressure detection sensor chip is connected to a first preset voltage power supply, and the power supply terminal of the pressure detection sensor chip is also grounded through a second capacitor;

[0025] The inverting input terminal of the first operational amplifier is connected to the output terminal;

[0026] The output terminal of the first operational amplifier is connected to the non-inverting input terminal of the second operational amplifier through a first resistor and a second resistor in sequence;

[0027] The inverting input terminal of the second operational amplifier is connected to a third resistor and a fourth resistor connected in series, and the inverting input terminal of the second operational amplifier is grounded via a third capacitor;

[0028] The output terminal of the second operational amplifier is connected to the control unit via a fifth resistor;

[0029] The third resistor and the fourth resistor are connected to each other via a fourth capacitor and grounded;

[0030] The fifth resistor and the control unit are grounded via a sixth resistor.

[0031] Optionally, the gas valve switch control circuit includes a first MOS tube and a gas valve connection terminal;

[0032] The gate of the first MOS transistor is electrically connected to the control unit;

[0033] The source of the first MOS transistor is grounded;

[0034] The drain of the first MOS tube is connected to the gas valve connection terminal;

[0035] The gas valve connecting terminal is connected to the valve of the gas valve.

[0036] Optionally, when two or more gas valves are included, two or more first MOS tubes are correspondingly arranged in parallel in the gas valve switch control circuit.

[0037] Optionally, the air pump switch control circuit is specifically:

[0038] A first end of the common mode inductor is grounded;

[0039] The second end of the common mode inductor is connected to a second preset voltage power supply;

[0040] The third end of the common-mode inductor is connected to the anode of the diode, and the cathode of the diode is connected to the first end of the air pump connection terminal;

[0041] The fourth end of the common-mode inductor is connected to the second end of the air pump connection terminal, the fourth end of the common-mode inductor is connected to the cathode of the diode via a fifth capacitor, and the fourth end of the common-mode inductor is connected to the first end of the air pump connection terminal via a sixth capacitor;

[0042] The third end of the air pump connection terminal is connected to the control unit via a sixth resistor, and the third end of the air pump connection terminal is also connected to a third preset voltage power supply via a seventh resistor;

[0043] The fourth end of the air pump connection terminal is connected to the control unit through an eighth resistor.

[0044] A second aspect of the present application provides an intermittent pulse compression anti-thrombotic system, which includes the airbag inflation and deflation control device according to any one of the first aspects of the present application.

[0045] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0046] In the present application, an airbag inflation and deflation control device and an intermittent pulse pressurization anti-thrombotic system are provided. The air pump first inflates the air chamber to increase the pressure in the air chamber. When the pressure detection circuit detects that the real-time pressure value in the air chamber reaches the target value, an instruction is sent to the air pump switch control circuit to stop the air pump from inflating. At this time, the gas in the air chamber is in a high-pressure state. Subsequently, an instruction is sent to the air valve switch control circuit to open the air valve. The high pressure in the air chamber is controlled to quickly enter the airbag, thereby realizing rapid inflation of the airbag. This solves the technical problem that the existing technology generally connects the air pump directly to the airbag, mainly by opening the air valve, and the air pump directly inflates the airbag. The airbag inflation time is generally slow, which makes it difficult to achieve the therapeutic effect of the rapid pressurization shock required for the soles of the feet and palms. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic structural diagram of an airbag inflation and deflation control device according to an embodiment of the present application;

[0048] Figure 2 This is a circuit structure diagram of a pressure detection circuit in an embodiment of the present application;

[0049] Figure 3 This is a circuit structure diagram of the air pump switch control circuit in an embodiment of the present application. DETAILED DESCRIPTION

[0050] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0051] This application designs an airbag inflation and deflation control device and an intermittent pulse pressurization anti-thrombotic system, which solves the technical problem that the existing technology generally connects the air pump directly to the airbag, mainly by opening the air valve, and the air pump directly inflates the airbag. The airbag inflation time is generally slow, which makes it difficult to achieve the required rapid pressurization shock therapeutic effect on the soles of the feet and palms.

[0052] For easier understanding, see Figure 1 , Figure 1 FIG. 1 is a schematic structural diagram of an airbag inflation and deflation control device according to an embodiment of the present application. Figure 1 As shown, specifically including:

[0053] Air pump 01, air chamber 02, air valve 03, air bag 04, air pump switch control circuit 05, pressure detection circuit 06, air valve switch control circuit 07 and control unit 08;

[0054] The air pump 01, the air chamber 02 and the air bag 04 are connected in sequence through airways;

[0055] An air valve 03 is provided between the air chamber 02 and the air bag 04;

[0056] The air pump switch control circuit 05 is used to control the opening and closing of the air pump 01;

[0057] The pressure detection circuit 06 is used to detect the real-time pressure value in the air chamber 02;

[0058] The gas valve switch control circuit 07 is used to control the opening and closing of the gas valve 03;

[0059] The air pump switch control circuit 05 is electrically connected to the pressure detection circuit 06 via the control unit 08;

[0060] The gas valve switch control circuit 07 is electrically connected to the pressure detection circuit 06 via the control unit 08 .

[0061] It should be noted that the combination of the air pump 01, the air chamber 02, the air valve 03, the airbag 04, the air pump switch control circuit 05, the pressure detection circuit 06, the air valve switch control circuit 07 and the control unit 08 realizes an integrated airbag inflation and deflation control device. Through the coordinated work of various components, it ensures that the airbag can be quickly inflated and deflated as needed.

[0062] In addition, a fault detection and alarm system may be included to improve the safety of inflation and deflation.

[0063] The air pump 01, the air chamber 02 and the air bag 04 are connected in sequence through airways to provide a compact and efficient gas transmission path, thereby reducing the loss of gas during the transmission process.

[0064] Different airway structures can be designed according to the actual needs of different products to optimize gas flow characteristics.

[0065] The air valve 03 provided between the air chamber 02 and the airbag 04 allows precise control of the inflation and deflation process of the airbag, thereby improving the response speed and control accuracy of the airbag.

[0066] In addition, a multi-stage gas valve design can be used to achieve more precise pressure control.

[0067] The air pump switch control circuit 05 is used to control the opening and closing of the air pump 01. This electronic control improves the safety and reliability of the air pump operation. The air pump switch control circuit 05 can also integrate an intelligent algorithm to automatically adjust the operating state of the air pump according to usage.

[0068] Pressure detection circuit 06 detects the real-time pressure value within air chamber 02, providing real-time pressure monitoring to ensure that the airbag is inflated within a safe pressure range. Pressure detection circuit 06 can also be equipped with a pressure prediction function to adjust the working status of the air pump and air valve in advance.

[0069] The valve switch control circuit 07 is used to control the opening and closing of the valve 03 to achieve precise control of the valve and ensure the stability of the airbag inflation and deflation process. Wireless control technology can be used to improve the flexibility of the system.

[0070] Furthermore, it also includes: a first air release valve 03;

[0071] The first air release valve 03 is connected to the air chamber 02 via an air passage.

[0072] Furthermore, it also includes: a second air release valve 03;

[0073] The second deflation valve 03 is connected to the airbag 04 via an air passage.

[0074] It should be noted that the first and second air release valves 03 provide a quick air release function to cope with emergencies or maintenance. Optimally, the first and second air release valves 03 can be designed as an automatic air release system to automatically release air according to preset conditions.

[0075] Furthermore, the airbag 04 includes a left airbag 04 and a right airbag 04 .

[0076] Furthermore, the pressure detection circuit 06 includes:

[0077] Pressure detection sensor chip U, voltage follower module and voltage comparator module;

[0078] After the pressure detection sensor chip U collects the real-time pressure value in the air chamber 02, it is connected to the control unit 08 through the voltage follower module and the voltage comparator module.

[0079] Furthermore, if Figure 2 As shown, the pressure detection circuit 06 is specifically:

[0080] The output end of the pressure detection sensor chip U is connected to the non-inverting input end of the first operational amplifier Q1, and the first output end of the pressure detection sensor chip U is grounded through the first capacitor C1;

[0081] The power supply terminal of the pressure detection sensor chip U is connected to a first preset voltage power supply, and the power supply terminal of the pressure detection sensor chip U is also grounded through a second capacitor C2;

[0082] The inverting input terminal of the first operational amplifier Q1 is connected to the output terminal;

[0083] The output terminal of the first operational amplifier Q1 is connected to the non-inverting input terminal of the second operational amplifier Q2 through the first resistor R1 and the second resistor R2 in sequence;

[0084] The inverting input terminal of the second operational amplifier Q2 is connected to the third resistor R3 and the fourth resistor R4 connected in series, and the inverting input terminal of the second operational amplifier Q2 is grounded via the third capacitor C3;

[0085] The output terminal of the second operational amplifier Q2 is connected to the control unit O8 via the fifth resistor R5;

[0086] The third resistor R3 and the fourth resistor R4 are connected to the ground via a fourth capacitor C4;

[0087] A sixth resistor is connected between the fifth resistor R5 and the control unit 08 and is grounded.

[0088] It should be noted that the pressure detection circuit 06 improves the accuracy of pressure detection through precise signal amplification and processing. Furthermore, digital signal processing technology can be used to improve the anti-interference ability of the signal.

[0089] Furthermore, the gas valve switch control circuit 07 includes a first MOS tube and a gas valve 03 connection terminal;

[0090] The gate of the first MOS tube is electrically connected to the control unit 08;

[0091] The source of the first MOS tube is grounded;

[0092] The drain of the first MOS tube is connected to the connection terminal of the gas valve 03;

[0093] The gas valve 03 connection terminal is connected to the valve of gas valve 03.

[0094] Furthermore, when two or more gas valves 03 are included, two or more first MOS tubes are correspondingly provided in parallel in the gas valve switch control circuit 07 .

[0095] It should be noted that the valve switch control circuit 07 realizes rapid opening and closing of the valve through the rapid response of the MOS transistor. The performance of the MOS transistor can be improved by using more advanced semiconductor materials.

[0096] Furthermore, if Figure 3 As shown, the air pump switch control circuit 05 is specifically:

[0097] A first end of the common mode inductor L is grounded;

[0098] The second end of the common mode inductor L is connected to a second preset voltage power supply;

[0099] The third end of the common-mode inductor L is connected to the anode of the diode D, and the cathode of the diode D is connected to the first end of the air pump connection terminal J;

[0100] The fourth end of the common-mode inductor L is connected to the second end of the air pump connection terminal J, the fourth end of the common-mode inductor L is connected to the cathode of the diode D via the fifth capacitor C5, and the fourth end of the common-mode inductor L is connected to the first end of the air pump connection terminal J via the sixth capacitor C6;

[0101] The third end of the air pump connection terminal J is connected to the control unit 08 through the sixth resistor R6, and the third end of the air pump connection terminal J is also connected to the third preset voltage power supply through the seventh resistor R7;

[0102] The fourth end of the air pump connection terminal J is connected to the control unit 08 through the eighth resistor R8.

[0103] It should be noted that the air pump switch control circuit 05 improves the circuit's anti-interference capability through the design of common-mode inductors and diodes. Furthermore, it can be designed as a modular circuit for easy maintenance and upgrade.

[0104] The present application also provides an intermittent pulse compression anti-thrombotic system, which includes the airbag inflation and deflation control device of any one of the first embodiments of the present application.

[0105] The airbag inflation and deflation control device and intermittent pulse pressurization anti-thrombotic system provided in the embodiments of the present application first inflate the air chamber by an air pump to increase the pressure in the air chamber. When the pressure detection circuit detects that the real-time pressure value in the air chamber reaches the target value, an instruction is sent to the air pump switch control circuit to stop the air pump from inflating. At this time, the gas in the air chamber is in a high-pressure state. Subsequently, an instruction is sent to the air valve switch control circuit to open the air valve. The high pressure in the air chamber is controlled to quickly enter the airbag, thereby realizing rapid inflation of the airbag. This solves the technical problem that the prior art generally connects the air pump directly to the airbag, mainly by opening the air valve, and the air pump directly inflates the airbag. The airbag inflation time is generally slow, resulting in difficulty in achieving the therapeutic effect of the rapid pressurization shock required for the soles of the feet and palms.

[0106] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An airbag inflation and deflation control device, characterized in that: include: Air pump, air chamber, air valve, air bag, air pump switch control circuit, pressure detection circuit, air valve switch control circuit and control unit; The air pump, the air chamber and the air bag are connected in sequence through airways; The air valve is provided between the air chamber and the air bag; The air pump switch control circuit is used to control the opening and closing of the air pump; The pressure detection circuit is used to detect the real-time pressure value in the air chamber; The gas valve switch control circuit is used to control the opening and closing of the gas valve; The air pump switch control circuit is electrically connected to the pressure detection circuit via the control unit; The gas valve switch control circuit is electrically connected to the pressure detection circuit through the control unit.

2. The airbag inflation and deflation control device according to claim 1, characterized in that: Also includes: First air relief valve; The first air release valve is connected to the air chamber through an air passage.

3. The airbag inflation and deflation control device according to claim 1, characterized in that: Also includes: Second air release valve; The second deflation valve is connected to the airbag via an air passage.

4. The airbag inflation and deflation control device according to claim 1, characterized in that: The airbag includes a left airbag and a right airbag.

5. The airbag inflation and deflation control device according to claim 1, characterized in that: The pressure detection circuit comprises: Pressure detection sensor chip, voltage follower module and voltage comparator module; After the pressure detection sensor chip collects the real-time pressure value in the air chamber, it is connected to the control unit through the voltage follower module and the voltage comparator module.

6. The airbag inflation and deflation control device according to claim 5, characterized in that: The pressure detection circuit is specifically: The output end of the pressure detection sensor chip is connected to the non-inverting input end of the first operational amplifier, and the first output end of the pressure detection sensor chip is grounded through a first capacitor; The power supply terminal of the pressure detection sensor chip is connected to a first preset voltage power supply, and the power supply terminal of the pressure detection sensor chip is also grounded through a second capacitor; The inverting input terminal of the first operational amplifier is connected to the output terminal; The output terminal of the first operational amplifier is connected to the non-inverting input terminal of the second operational amplifier through a first resistor and a second resistor in sequence; The inverting input terminal of the second operational amplifier is connected to a third resistor and a fourth resistor connected in series, and the inverting input terminal of the second operational amplifier is grounded via a third capacitor; The output terminal of the second operational amplifier is connected to the control unit via a fifth resistor; The third resistor and the fourth resistor are connected to each other via a fourth capacitor and grounded; The fifth resistor and the control unit are grounded via a sixth resistor.

7. The airbag inflation and deflation control device according to claim 1, characterized in that: The gas valve switch control circuit includes a first MOS tube and a gas valve connection terminal; The gate of the first MOS transistor is electrically connected to the control unit; The source of the first MOS transistor is grounded; The drain of the first MOS tube is connected to the gas valve connection terminal; The gas valve connecting terminal is connected to the valve of the gas valve.

8. The airbag inflation and deflation control device according to claim 7, characterized in that: When two or more gas valves are included, two or more first MOS tubes are correspondingly arranged in parallel in the gas valve switch control circuit.

9. The airbag inflation and deflation control device according to claim 1, characterized in that: The air pump switch control circuit is specifically: A first end of the common mode inductor is grounded; The second end of the common mode inductor is connected to a second preset voltage power supply; The third end of the common-mode inductor is connected to the anode of the diode, and the cathode of the diode is connected to the first end of the air pump connection terminal; The fourth end of the common-mode inductor is connected to the second end of the air pump connection terminal, the fourth end of the common-mode inductor is connected to the cathode of the diode via a fifth capacitor, and the fourth end of the common-mode inductor is connected to the first end of the air pump connection terminal via a sixth capacitor; The third end of the air pump connection terminal is connected to the control unit via a sixth resistor, and the third end of the air pump connection terminal is also connected to a third preset voltage power supply via a seventh resistor; The fourth end of the air pump connection terminal is connected to the control unit through an eighth resistor.

10. An intermittent pulse compression anti-thrombotic system, characterized in that: An airbag inflation and deflation control device comprising the airbag inflation and deflation control device according to any one of claims 1 to 9.

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