Brachial artery compressor and control method thereof

Abstract

The invention provides a brachial artery compressor and a control method thereof, and relates to the technical field of medical instruments. The brachial artery compressor comprises a tourniquet; the first air bag is arranged on the tourniquet and used for being applied to the wound side; the second air bag is arranged on the tourniquet and is applied to a non-wound side corresponding to the wound side; and the inflation and deflation control assembly is used for controlling the first air bag and the second air bag to be inflated and deflated respectively. The brachial artery compressor is provided with the first air bag and the second air bag which are matched with each other and are oppositely arranged, one air bag is used for being applied to the wound side, and the other air bag is used for being applied to the non-wound side, so that the first air bag and the second air bag can be inflated through the inflation and deflation control assembly; therefore, the pressure of the first air bag and the pressure of the second air bag are independently adjusted. The brachial artery compressor can improve the comfort degree, the safety performance and the automation degree of a patient in the using process.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a brachial artery compressor and a control method thereof. Background Art

[0002] The brachial artery is a direct continuation of the axillary artery. It runs along the medial groove of the biceps brachii and accompanies the median nerve downward, first crossing each other on the medial side of the nerve to slightly below the middle of the upper arm, and then turning to the outside of the nerve. Deep in the antecubital fossa, it divides into the radial artery and the ulnar artery at the level of the radial neck.

[0003] When stopping bleeding in the forearm, use your fingers to press the position from the inner side of the biceps brachii to the humerus, which is an important hemostasis point. In addition to the muscle branches distributed in the flexor and extensor muscles of the upper arm, the brachial artery also has branches such as the deep brachial artery, the superior ulnar collateral artery, and the inferior ulnar collateral artery. They nourish the tissues in their distribution areas. When there is trauma or fracture in the upper arm, special attention should be paid to stopping bleeding in the brachial artery.

[0004] For hemostasis of the brachial artery, if the method of manual finger pressure and bandage is adopted, it is necessary to rely on experience to apply pressure. If the pressure is too small, bleeding is easy to occur; if the pressure is too large, blood flow is easy to be poor, and the pressure is not easy to maintain stability during the implementation process, resulting in hemostasis failure, increasing the risk of complications and the patient's pain. In the prior art, an airbag compression type brachial artery compressor can be used to stop bleeding on the brachial artery. The airbag compression type brachial artery compressor is provided with an air hole for inflation and / or deflation, and is also provided with a controller such as a single-chip microcomputer for detecting the airbag pressure and controlling the inflation and deflation of the airbag as needed. Although the pressure and pressure relief of the airbag compression type brachial artery compressor are easier to control, the pressure and pressure relief of the brachial artery compressor in the prior art are too dependent on human experience, and its comfort level, safety performance and automation level are not ideal. Summary of the invention

[0005] One of the problems solved by the present invention is how to provide a brachial artery compressor with higher comfort, safety and automation.

[0006] In order to solve at least one of the above problems, the present invention provides a brachial artery compressor, which includes: a tourniquet; a first airbag, which is arranged on the tourniquet and used to be applied to the wound side; a second airbag, which is arranged on the tourniquet and used to be applied to the non-wound side corresponding to the wound side; and an inflation and deflation control component, which is used to control the inflation and deflation of the first airbag and the second airbag respectively.

[0007] In any of the above technical solutions, the inflation and deflation control component includes: a controller; an inflation pump, wherein the first air outlet of the inflation pump is connected to the first airbag, and the second air outlet of the inflation pump is connected to the second airbag; a solenoid valve, which is arranged between the second air outlet and the second airbag and is used to control the connection and disconnection of the second air outlet and the second airbag; wherein the controller is respectively connected to the inflation pump and the solenoid valve signals.

[0008] In any of the above technical solutions, the inflation and deflation control component also includes: a first pressure relief valve, which is connected to the first airbag and is used to control the pressure relief of the first airbag; a second pressure relief valve, which is connected to the second airbag and is used to control the pressure relief of the second airbag; wherein the controller is respectively connected to the first pressure relief valve and the second pressure relief valve signals.

[0009] In any of the above technical solutions, the inflation and deflation control component also includes: a first pressure sensor, which is used to detect the pressure of the first airbag; a second pressure sensor, which is used to detect the pressure of the second airbag; wherein the controller is respectively connected to the first pressure sensor and the second pressure sensor signals.

[0010] In any of the above technical solutions, the inflation and deflation control assembly also includes: a pulse detection element, which is arranged on the tourniquet and is used to detect the pulse.

[0011] The present invention also provides a control method for a brachial artery compressor, which is used to control the above-mentioned brachial artery compressor. The control method includes: when the brachial artery compressor is applied in place, controlling the solenoid valve to close, and controlling the inflation pump to inflate the first airbag; real-time collection of the first pressure parameter of the first pressure sensor, the second pressure parameter of the second pressure sensor, and the pulse parameter of the pulse detection element; according to the first pressure parameter, the second pressure parameter, and the pulse parameter, controlling the opening and closing of the solenoid valve and the starting and stopping of the inflation pump to perform a first compression hemostasis operation.

[0012] In any of the above technical solutions, the opening and closing of the solenoid valve and the start and stop of the air pump are controlled according to the first pressure parameter, the second pressure parameter, and the pulse parameter, specifically including: controlling the air pump to inflate; when the first pressure parameter rises to a first threshold value, controlling the solenoid valve to open; when the second pressure parameter rises to a second threshold value, controlling the solenoid valve to close; controlling the air pump to continue inflating until the pulse parameter drops to the pulse threshold value, and the second pressure parameter rises to the first target value again; controlling the air pump to stop; wherein the first threshold value is lower than the second threshold value.

[0013] In any of the above technical solutions, after controlling the air pump to stop, the control method also includes: controlling the air pump and the first pressure relief valve to work together so that the pulse parameters are within a safe pulse range; wherein the safe pulse range is determined based on the pulse threshold.

[0014] In any of the above technical solutions, after the first compression hemostasis operation is completed, the control method also includes: after a first target time from the completion of the first compression hemostasis operation, controlling the first pressure relief valve and the second pressure relief valve to work in coordination so that the first airbag and the second airbag can safely release pressure.

[0015] In any of the above technical solutions, controlling the first pressure relief valve and the second pressure relief valve to work in coordination specifically includes: controlling the second pressure relief valve to open so that the second airbag releases pressure; when the second pressure parameter is reduced to a second target value, controlling the second pressure relief valve to close, and controlling the first pressure relief valve to open, so that the first airbag releases pressure; when the first pressure value is reduced to a third target value, controlling the first pressure relief valve to close; and cyclically executing the above operations until the first pressure value is reduced to a safety pressure value; wherein the second target value is higher than the third target value.

[0016] Beneficial Effects

[0017] The present invention provides a brachial artery compressor, which includes: a tourniquet, a first airbag and a second airbag. The first airbag is arranged on the tourniquet and is used to be applied on the wound side. The second airbag is also arranged on the tourniquet and is used to be applied on the non-wound side corresponding to the wound side. In addition, the brachial artery compressor of the present invention also includes an inflation and deflation control component, which is used to control the inflation and deflation of the first airbag and the second airbag respectively. Since the brachial artery compressor of the present invention is provided with a first airbag and a second airbag that cooperate with each other, and the two are arranged relative to each other, one is used to be applied on the wound side, and the other is used to be applied on the non-wound side, the first airbag and the second airbag can be inflated respectively through the inflation and deflation control component, thereby independently adjusting the pressure of each of the first airbag and the second airbag. The brachial artery compressor of the present invention can further improve the patient's comfort during use, as well as the safety performance and the degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a brachial artery compressor according to an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of a control method of a brachial artery compressor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the following is a detailed description of the specific embodiments of the present invention.

[0021] Figure 1 FIG. 1 is a schematic diagram of the structure of the brachial artery compressor according to an embodiment of the present invention. It can be understood that Figure 1 In the figures, solid lines represent physical connections, and dashed lines represent signal connections, such as wireless communication connections or electrical connections.

[0022] like Figure 1 As shown, an embodiment of the present invention provides a brachial artery compressor. The brachial artery compressor includes: a first airbag 200, which is arranged on a tourniquet 100 and is used to be applied to the wound side; a second airbag 300, which is arranged on a tourniquet 100 and is used to be applied to the non-wound side corresponding to the wound side; and an inflation and deflation control component, which is used to control the inflation and deflation of the first airbag 200 and the second airbag 300.

[0023] The tourniquet 100 is in a strip shape and is used to wrap around the upper part of the patient's bleeding point. It can be wrapped and fixed by means of a strap, Velcro, buckle, etc. The first airbag 200 and the second airbag 300 are provided on the tourniquet 100. The tourniquet 100 applies pressure to the patient by inflating the air and the tourniquet 100 is relieved of pressure by deflation.

[0024] The brachial artery compressor of the present invention is provided with a first airbag 200 and a second airbag 300 that cooperate with each other and are arranged opposite to each other, one is used to be applied on the wound side, and the other is used to be applied on the non-wound side. Therefore, the first airbag 200 and the second airbag 300 can be inflated separately through the inflation and deflation control component, thereby independently adjusting the respective pressures of the first airbag 200 and the second airbag 300.

[0025] For example, during inflation, the pressure of the first airbag 200 can be greater than that of the second airbag 300 to ensure the hemostasis effect and take into account the comfort of the patient. Alternatively, during deflation, the first airbag 200 and the second airbag 300 can be controlled to be deflated synchronously, but the pressure release speed of the first airbag 200 is controlled to be slower than that of the second airbag 300 to ensure safety.

[0026] Therefore, the brachial artery compressor of the present invention can further improve the patient's comfort level during use, as well as the safety performance and automation level.

[0027] like Figure 1 As shown, in some preferred embodiments of the present invention, the inflation and deflation control component includes: a controller 410; an air pump 420, wherein the first air outlet 421 of the air pump 420 is connected to the first airbag 200, and the second air outlet 422 of the air pump 420 is connected to the second airbag 300; a solenoid valve 430, wherein the solenoid valve 430 is arranged between the second air outlet 422 and the second airbag 300, and is used to control the connection and disconnection of the second air outlet 422 and the second airbag 300; wherein the controller 410 is respectively connected to the air pump 420 and the solenoid valve 430 signals.

[0028] Specifically, the controller 410 of the present invention may be a single chip microcomputer, and the air pump 420 is controlled by the controller 410 and is provided with a first air outlet 421 and a second air outlet 422 arranged in parallel. The air pump 420 supplies air to the first airbag 200 through the first air outlet 421. The solenoid valve 430 is controlled by the controller 410. When the solenoid valve 430 is opened, the air pump 420 supplies air to the second airbag 300 through the second air outlet 422. When the solenoid valve 430 is closed, the air pump 420 is isolated from the second airbag 300 and can only supply air to the first airbag 200.

[0029] By setting the electromagnetic valve 430, the first airbag 200 and the second airbag 300 can be inflated at the same time through an air pump 420, thereby saving space and reducing production costs. Since the first airbag 200 is used to be applied to the wound side, and the second airbag 300 is used to be applied to the non-wound side corresponding to the wound side, the inflation pressure required at the position of the first airbag 200 is greater than that of the second airbag 300. Accordingly, after the second airbag 300 meets the pressure requirement, it is only necessary to close the electromagnetic valve 430 to continue to inflate the first airbag 200.

[0030] like Figure 1 As shown, in some preferred embodiments of the present invention, the inflation and deflation control component also includes: a first pressure relief valve 440, which is connected to the first airbag 200 and is used to control the pressure relief of the first airbag 200; a second pressure relief valve 450, which is connected to the second airbag 300 and is used to control the pressure relief of the second airbag 300; wherein the controller 410 is signal-connected to the first pressure relief valve 440 and the second pressure relief valve 450, respectively.

[0031] The first pressure relief valve 440 and the second pressure relief valve 450 are used to adjust the inflation pressure of the first airbag 200 and the second airbag 300 respectively, so that the first airbag 200 and the second airbag 300 are maintained in a safe pressure range.

[0032] like Figure 1 As shown, in some preferred embodiments of the present invention, the inflation and deflation control component also includes: a first pressure sensor 460, the first pressure sensor 460 is used to detect the pressure of the first airbag 200; a second pressure sensor 470, the second pressure sensor 470 is used to detect the pressure of the second airbag 300; wherein the controller 410 is respectively connected to the first pressure sensor 460 and the second pressure sensor 470 signals.

[0033] The first pressure sensor 460 and the second pressure sensor 470 respectively detect the pressure of the first airbag 200 and the second airbag 300 in real time. Accordingly, the first pressure sensor 460 is arranged near the first airbag 200, and the second pressure sensor 470 is arranged near the second airbag 300. The controller 410 obtains the pressure detection values ​​from the first pressure sensor 460 and the second pressure sensor 470, and is used to appropriately adjust the first airbag 200 and the second airbag 300 according to the pressure detection values.

[0034] like Figure 1 As shown, in some preferred embodiments of the present invention, the inflation and deflation control assembly further includes: a pulse detection element 480, which is disposed on the tourniquet 100 and is used to detect the pulse.

[0035] After the tourniquet 100 exerts its hemostatic effect, the pulse frequency at the patient's arterial position decreases. Therefore, by detecting the patient's pulse through the pulse detection element 480, the hemostatic effect of the tourniquet 100 can be evaluated, and the controller 410 can then adjust the pressure of the first airbag 200 and the second airbag 300 according to the patient's pulse.

[0036] Figure 2 FIG. 1 is a schematic diagram of a control method of a brachial artery compressor according to an embodiment of the present invention. Figure 2 As shown, an embodiment of the present invention further provides a control method for a brachial artery compressor, the control method is used to control the brachial artery compressor, and the control method includes:

[0037] S100, when the brachial artery compressor is in place, controlling the solenoid valve to close, and controlling the inflation pump to inflate the first airbag;

[0038] S200, collecting in real time a first pressure parameter of the first pressure sensor, a second pressure parameter of the second pressure sensor, and a pulse parameter of the pulse detection element;

[0039] S300, according to the first pressure parameter, the second pressure parameter, and the pulse parameter, controlling the opening and closing of the electromagnetic valve and the starting and stopping of the air pump to perform a first compression hemostasis operation.

[0040] It is understandable that when using the brachial artery compressor, it needs to be placed at the position corresponding to the upper blood vessel of the patient's bleeding point and fixed. After the brachial artery compressor is applied in place, it can be inflated and pressurized.

[0041] The present invention controls the air pump to open while keeping the electromagnetic valve closed, so as to inflate the first airbag. After the first airbag has a certain pressure, the second airbag begins to be inflated. The speed at which the first airbag and the second airbag are inflated can be controlled by the diameter of the air path. For example, the size of the air path between the air pump and the first airbag and the size of the air path between the air pump and the second airbag can be set to be equal; the size of the air path between the air pump and the first airbag can also be set to be larger than the size of the air path between the air pump and the second airbag.

[0042] After completing S100, the first airbag has been filled with a certain amount of air. At this time, opening the solenoid valve can inflate the first airbag and the second airbag at the same time. Such an inflation method can ensure that the wound side of the patient is preferably and quickly pressurized to ensure a good hemostatic effect. After the second airbag is also inflated and the first airbag continues to be pressurized, the next step is to control the closing of the solenoid valve in a timely manner to ensure that the second airbag stops inflating and the first airbag continues to be inflated, so as to ensure that the pressure on the wound side corresponding to the first airbag is greater than the non-wound side corresponding to the second airbag, thereby taking into account the patient's hemostatic effect and comfort and safety.

[0043] To achieve the above objectives, the present invention collects the first pressure parameter of the first pressure sensor, the second pressure parameter of the second pressure sensor, and the pulse parameter of the pulse detection element in real time through S200, and then controls the opening and closing of the solenoid valve and the start and stop of the air pump according to the above values ​​and parameters through S300.

[0044] Specifically, S300 controls the opening and closing of the solenoid valve and the start and stop of the air pump according to the first pressure parameter, the second pressure parameter, and the pulse parameter. In some preferred embodiments of the present invention, S300 specifically includes:

[0045] S310, controlling the air pump to inflate;

[0046] S320, when the first pressure parameter increases to a first threshold value, controlling the solenoid valve to open;

[0047] S330, when the second pressure parameter rises to a second threshold, controlling the solenoid valve to close;

[0048] S340, controlling the inflation pump to continue to inflate until the pulse parameter decreases to the pulse threshold value, and the second pressure parameter increases to the first target value;

[0049] S350, control the air pump to stop.

[0050] The specific values ​​of the first threshold and the second threshold can be set before the product is shipped, or can be selected or adjusted by the medical staff operating the product during use. It should be noted that the first threshold is lower than the second threshold. In the factory settings, the first threshold and the second threshold of different gears can be set for the product for the operator to choose.

[0051] Thus, through the above steps, after the first airbag on the wound side is filled with a certain amount of gas, the second airbag can be controlled to be inflated. When the second pressure parameter rises to the second threshold value, the pressure of the second airbag on the non-wound side has met the requirements. At this time, the solenoid valve is controlled to close, and the air pump is controlled to continue to inflate so that the first airbag is continuously pressurized until the pulse parameter is reduced to the pulse threshold value, indicating that the brachial artery compressor has achieved the expected hemostatic effect. Among them, the pulse threshold value can be set before the product is shipped. Preferably, it can also be selected or adjusted by the actual situation of the patient of the medical staff operating the product during use. It should be noted that when the pulse parameter is reduced to the pulse threshold value, it is also necessary to control the first airbag to continue to be pressurized until the second pressure parameter is increased to the first target value on the original basis to ensure the hemostatic effect. Among them, the first target value can be set before the product is shipped. Preferably, the first target value is 6kpa to 7kpa.

[0052] It should also be noted that the first pressure parameter, the second pressure parameter and the pulse parameter are all measured in real time and are constantly changing. Therefore, after the electromagnetic valve is closed by controlling S330, the air pump is continuously controlled to continue to inflate by S340, and the second pressure parameter will continue to increase.

[0053] Since the first airbag 200 is used to be applied on the wound side and the second airbag 300 is used to be applied on the non-wound side corresponding to the wound side, the above steps can make the inflation pressure of the first airbag 200 larger and the second airbag 300 smaller, thereby ensuring the hemostatic effect and taking into account the patient's comfort, avoiding swelling and complications caused by excessive hemostatic pressure.

[0054] In some preferred embodiments of the present invention, after controlling the air pump to stop, the control method further includes:

[0055] S400, controlling the air pump and the first pressure relief valve to work in coordination so that the pulse parameter is within a safe pulse range;

[0056] The safe pulse interval is determined according to the pulse threshold.

[0057] Specifically, by detecting the pulse parameters, the hemostasis effect can be evaluated. The value range of the safe pulse interval can be set before the product leaves the factory, and multiple gears can be set for selection. When the pulse parameter is close to the lower limit of the safe pulse interval, the first pressure relief valve can be controlled to release pressure; when the pulse parameter is close to the upper limit of the safe pulse interval, the air pump can be controlled to inflate.

[0058] In some preferred embodiments of the present invention, after the first compression hemostasis operation is completed, the control method of the embodiment of the present invention further includes:

[0059] S500: After a first target time from the completion of the first compression hemostasis operation, the first pressure relief valve and the second pressure relief valve are controlled to cooperate with each other to safely relieve pressure in the first airbag and the second airbag.

[0060] Wherein, controlling the first pressure relief valve and the second pressure relief valve to work in coordination specifically includes:

[0061] S510, controlling the second pressure relief valve to open, so as to relieve pressure from the second airbag;

[0062] S520, when the second pressure parameter is reduced to a second target value, controlling the second pressure relief valve to close, and controlling the first pressure relief valve to open, so that the first airbag releases pressure;

[0063] S530, when the first pressure value is reduced to a third target value, controlling the first pressure relief valve to close;

[0064] S540, executing the above operations in a loop until the first pressure value decreases to a safe pressure value;

[0065] The specific values ​​of the second target value and the third target value can be set before the product is put into use, or can be selected or adjusted by the medical staff operating the product during use. It should be noted that the second target value is higher than the third target value. In addition, the first target time is preferably 50 minutes to 1 hour. The number of cycles of performing the above S510 to S530 operations is preferably 2 to 3 times.

[0066] The reason for adopting the above steps is that the brachial artery compressor needs to be loosened once about 1 hour after each compression hemostasis operation is completed, and each time for about 3 minutes. Among them, when controlling the pressure relief of the compression hemostasis operation, it is necessary to first control the pressure relief of the second airbag. After the second airbag is depressurized to a certain degree, the first airbag is controlled to be depressurized. The above operations are implemented alternately and cyclically to gradually relieve pressure in time and segmentation, thereby ensuring safe and smooth pressure relief. When the first pressure value is reduced to the safety pressure value, the pressure relief is stopped to ensure safety. The safety pressure value can be set before the product is released, and can also be selected or adjusted by the medical staff operating the product during use.

[0067] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A brachial artery compressor, characterized in that: The brachial artery compressor comprises: Tourniquet (100); A first air bag (200), the first air bag (200) being arranged on the tourniquet (100) and being applied to the wound side; a second airbag (300), the second airbag (300) being arranged on the tourniquet (100) and being used for being applied to a non-wound side corresponding to the wound side; An inflation and deflation control component, the inflation and deflation control component is used to control the inflation and deflation of the first airbag (200) and the second airbag (300) respectively.

2. The brachial artery compressor according to claim 1, characterized in that: The inflation and deflation control assembly comprises: Controller (410); an air pump (420), wherein a first air outlet (421) of the air pump (420) is in communication with the first air bag (200), and a second air outlet (422) of the air pump (420) is in communication with the second air bag (300); a solenoid valve (430), the solenoid valve (430) being disposed between the second air outlet (422) and the second airbag (300) and being used to control the connection and disconnection between the second air outlet (422) and the second airbag (300); The controller (410) is respectively connected to the air pump (420) and the solenoid valve (430) by signals.

3. The brachial artery compressor according to claim 2, characterized in that: The inflation and deflation control assembly also includes: a first pressure relief valve (440), the first pressure relief valve (440) being connected to the first airbag (200) and used for controlling the pressure relief of the first airbag (200); a second pressure relief valve (450), the second pressure relief valve (450) being connected to the second airbag (300) and used for controlling the pressure relief of the second airbag (300); Wherein, the controller (410) is signal-connected to the first pressure relief valve (440) and the second pressure relief valve (450) respectively.

4. The brachial artery compressor according to claim 3, characterized in that: The inflation and deflation control assembly also includes: a first pressure sensor (460), the first pressure sensor (460) being used to detect the pressure of the first airbag (200); a second pressure sensor (470), the second pressure sensor (470) being used to detect the pressure of the second airbag (300); Wherein, the controller (410) is signal-connected to the first pressure sensor (460) and the second pressure sensor (470) respectively.

5. The brachial artery compressor according to claim 4, characterized in that: The inflation and deflation control assembly also includes: A pulse detection element (480) is provided on the tourniquet (100) and is used to detect the pulse.

6. A method for controlling a brachial artery compressor, characterized in that: The control method is used to control the brachial artery compressor according to claim 5, and the control method comprises: When the brachial artery compressor is applied in place, the solenoid valve is controlled to be closed, and the inflation pump is controlled to inflate the first airbag; a first pressure parameter of the first pressure sensor, a second pressure parameter of the second pressure sensor, and a pulse parameter of the pulse detection element are collected in real time; According to the first pressure parameter, the second pressure parameter, and the pulse parameter, the opening and closing of the electromagnetic valve and the start and stop of the air pump are controlled to perform a first compression hemostasis operation.

7. The control method according to claim 6, characterized in that: The controlling the opening and closing of the solenoid valve and the starting and stopping of the air pump according to the first pressure parameter, the second pressure parameter, and the pulse parameter specifically includes: Controlling the air pump to inflate; When the first pressure parameter rises to a first threshold, controlling the solenoid valve to open; When the second pressure parameter increases to a second threshold value, controlling the solenoid valve to close; Controlling the inflation pump to continue to inflate until the pulse parameter decreases to the pulse threshold, and then the second pressure parameter increases to the first target value; Controlling the air pump to stop; The first threshold is lower than the second threshold.

8. The control method according to claim 7, characterized in that: After controlling the air pump to stop, the control method further includes: Controlling the inflation pump and the first pressure relief valve to work in coordination so that the pulse parameter is within a safe pulse range; Wherein, the safe pulse interval is determined according to the pulse threshold.

9. The control method according to any one of claims 6 to 8, characterized in that: After the first compression hemostasis operation is completed, the control method further includes: After a first target time from the completion of the first compression hemostasis operation, the first pressure relief valve and the second pressure relief valve are controlled to work in coordination, so that the first airbag and the second airbag are safely depressurized.

10. The control method according to claim 9, characterized in that: The controlling the first pressure relief valve and the second pressure relief valve to work in coordination specifically includes: Controlling the second pressure relief valve to open so as to relieve pressure from the second airbag; When the second pressure parameter decreases to a second target value, controlling the second pressure relief valve to close, and controlling the first pressure relief valve to open, so that the first airbag releases pressure; When the first pressure value decreases to a third target value, controlling the first pressure relief valve to close; The above operations are performed cyclically until the first pressure value is reduced to a safe pressure value; Wherein, the second target value is higher than the third target value.

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