Microcirculation monitoring measuring device and measuring method thereof

Abstract

The invention discloses a microcirculation monitoring measuring device and a measuring method thereof.The measuring device is characterized in that an electromagnetic motion unit is used for enabling an upper finger clip to be close to or away from a lower finger clip, a pressure sensing module detects pressure and sends first, second and third pressure signals, and a pulse and blood oxygen detection module detects blood oxygen saturation and sends first, second and third detection signals; the control module controls the electromagnetic motion unit to be powered on when receiving the first pressure signal, controls the current of the electromagnetic motion unit to be increased when receiving the second pressure signal, controls the electromagnetic motion unit to be powered off when receiving the third pressure signal, and starts the timing module. When the control module judges that the third detection signal is consistent with the first detection signal, the timing module is controlled to stop timing. Therefore, the capillary refilling time is intelligently measured, the accuracy and the portability are improved, in addition, the pulse and blood oxygen detection module can also measure the pulse value and the blood oxygen saturation value, and a plurality of indexes for monitoring the microcirculation state are obtained.

Description

Technical Field

[0001] The present application relates to the technical field of microcirculation monitoring, and in particular to a measuring device and a measuring method for microcirculation monitoring. Background Art

[0002] Microcirculation is the terminal vascular network of the systemic circulation. Microcirculation is an important place for the body's substance transport, exchange and energy metabolism, and maintains the normal functioning of tissues and organs.

[0003] Among them, capillary refill time (CRT) was first used in clinical evaluation as a non-invasive, easy-to-implement, simple and repeatable means of microcirculatory perfusion assessment at the bedside. In recent years, the application of CRT in clinical practice has gradually gained attention. CRT refers to the time required for the skin to return to baseline color after pressure is applied to the skin soft tissue (usually the index finger pulp). It can reflect important information about skin perfusion and microcirculatory status. Under normal circumstances, after the pressure is removed, the skin can be filled and red within 3 seconds, which indicates that the local tissue microcirculation is normal. If the time for the skin to turn red after the pressure is removed is significantly prolonged, greater than 3 seconds, or the limbs are red in spots, this indicates that the patient has microcirculatory disorders. However, in clinical practice, the monitoring method of CRT is relatively traditional. Medical staff measure CRT by pressing the finger pulp with a slide and recording the time with a timer. There are large measurement errors, or the specific pressing pressure, the start time and the end time of measuring CRT are not recorded in detail, etc., and only CRT can be monitored as an indicator for evaluating the microcirculatory status, with poor accuracy, convenience and effectiveness. Summary of the invention

[0004] To this end, the present application provides a measuring device and a measuring method for microcirculation monitoring to solve the technical problems of the prior art in monitoring microcirculation status with a single indicator and poor accuracy and convenience.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A first aspect of the present invention provides a measuring device for microcirculation monitoring, comprising: an upper finger clamp and a lower finger clamp, wherein the upper finger clamp is relatively arranged above the lower finger clamp, and the upper finger clamp can move toward or away from the lower finger clamp in a vertical direction;

[0007] The electromagnetic motion unit comprises a permanent magnet, an electromagnet, an elastic member and a connecting column, wherein the permanent magnet is fixed in the lower finger clamp; the electromagnet is movably arranged below the permanent magnet, and generates a repulsive force between the electromagnet and the permanent magnet by energizing; the two ends of the connecting column are respectively fixedly connected to the electromagnet and the upper finger clamp, and are used to transmit the repulsive force of the electromagnet to the upper finger clamp; the elastic member is arranged between the upper finger clamp and the lower finger clamp, and is used to drive the upper finger clamp to reset;

[0008] A pressure sensing module is arranged on the surface of the lower finger clamp, and is used to detect a first pressure and send a first pressure signal when a finger is placed on the lower finger clamp; detect a second pressure and send a second pressure signal when the upper finger clamp squeezes the finger; and send a third pressure signal and stop detecting when the second pressure reaches a threshold;

[0009] The pulse and blood oxygen detection module is arranged on the upper finger clamp and the lower finger clamp, and is used to detect a first blood oxygen saturation value and send a first detection signal when receiving a first pressure signal; detect a second blood oxygen saturation value and send a second detection signal when receiving a second pressure signal; detect a third blood oxygen saturation value and send a third detection signal when receiving a third pressure signal;

[0010] A timing module, used for recording the time interval from when the electromagnetic motion unit is powered off to when the third detection signal is consistent with the first detection signal after the third pressure signal is emitted;

[0011] The control module is used to control the electromagnetic motion unit to be powered on when receiving the first pressure signal; control the current of the electromagnetic motion unit to increase when receiving the second pressure signal; control the electromagnetic motion unit to be powered off and start the timing module when receiving the third pressure signal; when the third detection signal is consistent with the first detection signal, control the timing module to stop timing, and control the pulse and blood oxygen detection module to measure the pulse.

[0012] Optionally, the pulse and blood oxygen detection module includes a signal sending device and a signal receiving device, the signal sending device is arranged on the lower surface of the upper finger clamp, the signal receiving device is arranged corresponding to the signal sending device and is arranged on the upper surface of the lower finger clamp, the signal sending device includes a red light emitting diode and an infrared light emitting diode, and the signal receiving device receives red light and infrared light that penetrate the fingers respectively.

[0013] Further optionally, the microcirculation monitoring measuring device also includes a shell, in which a body temperature measurement module is arranged, and the body temperature measurement module is used to measure the body temperature of the finger tip. The body temperature measurement module includes a pyroelectric infrared sensor, and the pyroelectric infrared sensor is arranged on the lower surface of the upper finger clamp.

[0014] Further optionally, the microcirculation monitoring measurement device also includes a storage and display module, which includes a data storage unit and a display screen, the display screen is arranged on the outside of the shell, and the data storage unit is arranged on the inside of the shell, the data storage unit is connected to the pulse and blood oxygen detection module, the body temperature measurement module and the timing module, and the display screen is used to display the pulse value, blood oxygen saturation value, temperature value and capillary refill time.

[0015] Further optionally, an alarm module is also provided in the housing, and the alarm module is connected to the timing module. When the timing time of the timing module exceeds a preset time, the alarm module issues an alarm.

[0016] Further optionally, a power module is also provided in the housing, and the power module provides power for the control module, the timing module, the pulse and blood oxygen detection module, the pressure sensing module, the electromagnetic motion unit, the body temperature measurement module, the storage display module, and the alarm module.

[0017] Further optionally, a charging port is provided on the shell, and the charging port is connected to the power module.

[0018] Further optionally, a data transmission port is provided on the housing, and the data transmission port is connected to the data storage unit.

[0019] The second aspect of the present invention provides a method for measuring microcirculation monitoring, using a measuring device for microcirculation monitoring provided by the first aspect of the present invention, the method for measuring microcirculation monitoring includes a method for measuring capillary refill time, specifically as follows:

[0020] The finger to be tested is placed on the pressure sensing module, and the pressure sensing module detects a first pressure and sends a first pressure signal;

[0021] The pulse and blood oxygen detection module receives the first pressure signal, detects the first blood oxygen saturation value and sends a first detection signal;

[0022] The control module receives the first pressure signal and controls the electromagnetic motion unit to be energized, so that a repulsive force is generated between the electromagnet and the permanent magnet, and the connecting column drives the upper finger clamp to move closer to the lower finger clamp;

[0023] The pressure sensing module detects a second pressure and sends a second pressure signal;

[0024] The pulse and blood oxygen detection module receives the second pressure signal, detects the second blood oxygen saturation value and sends a second detection signal;

[0025] The control module receives the second pressure signal and controls the current of the electromagnetic motion unit to increase;

[0026] When the second pressure detected by the pressure sensing module reaches a threshold, a third pressure signal is sent and detection is stopped;

[0027] The pulse and blood oxygen detection module receives the third pressure signal, detects the third blood oxygen saturation value and sends a third detection signal;

[0028] The control module receives the third pressure signal, controls the electromagnetic motion unit to be powered off, and the elastic member drives the upper finger clamp to move away from the lower finger clamp, thereby starting the timing module;

[0029] The timing module starts timing;

[0030] The control module receives the first detection signal, the second detection signal and the third detection signal, and determines whether the third detection signal is consistent with the first detection signal. If the third detection signal is inconsistent with the first detection signal, the timing module continues to time. If the third detection signal is consistent with the first detection signal, the timing module stops timing.

[0031] The timing time of the timing module is the capillary refill time.

[0032] Compared with the prior art, this application has at least the following beneficial effects:

[0033] A measuring device for microcirculation monitoring comprises an upper finger clamp and a lower finger clamp, an electromagnetic motion unit, a pressure sensing module, a pulse and blood oxygen detection module, a timing module and a control module, wherein the electromagnetic motion unit is used to make the upper finger clamp move closer to or farther from the lower finger clamp, the pressure sensing module is used to detect pressure and send a first pressure signal, a second pressure signal and a third pressure signal, the pulse and blood oxygen detection module is used to detect blood oxygen saturation and send a first detection signal, a second detection signal and a third detection signal, the control module controls the electromagnetic motion unit to be powered on when receiving the first pressure signal, controls the current of the electromagnetic motion unit to increase when receiving the second pressure signal, controls the electromagnetic motion unit to be powered off when receiving the third pressure signal, and starts the timing module; when the control module determines that the third detection signal is consistent with the first detection signal, controls the timing module to stop timing, and controls the pulse and blood oxygen detection module to measure pulse, and the recording time of the timing module is the capillary refilling time. In this way, through the interaction between the modules of the measuring device of the present application, the capillary refill time can be intelligently measured, and the accuracy and portability are significantly improved. In addition, while measuring the capillary refill time, the pulse oximetry detection module can measure the pulse value and blood oxygen saturation value to obtain multiple indicators for monitoring the microcirculation status. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more intuitively illustrate the prior art and the present application, exemplary drawings are given below. It should be understood that the specific shapes and structures shown in the drawings should not generally be regarded as limiting conditions for implementing the present application; for example, those skilled in the art are capable of easily making conventional adjustments or further optimizations to the addition / reduction / attribution division, specific shapes, positional relationships, connection methods, dimensional ratios, etc. of certain units (components) based on the technical concepts and exemplary drawings disclosed in the present application.

[0035] Figure 1A schematic diagram of the lateral structure of a measuring device for microcirculation monitoring provided in an embodiment of the present application;

[0036] Figure 2 A schematic diagram of a forward cross-section of a measuring device for microcirculation monitoring provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 1. Pulse and blood oxygen detection module; 101. Signal sending device; 102. Signal receiving device; 2. Pressure sensing module; 3. Control module; 4. Electromagnetic motion unit; 401. Elastic member; 402. Permanent magnet; 403. Electromagnet; 404. Connecting column; 5. Timing module; 6. Power supply module; 7. Upper finger clip; 8. Lower finger clip; 9. Body temperature measurement module; 901. Pyroelectric infrared sensor; 902. Preamplifier circuit; 10. Storage display module; 11. Housing; 12. Charging port; 13. Data transmission port. DETAILED DESCRIPTION

[0039] The present application is further described below in detail through specific embodiments in conjunction with the accompanying drawings.

[0040] The purpose of the present invention is to provide a measuring device and a measuring method for microcirculation monitoring, so as to solve the technical problems in the prior art that the indicators for monitoring the microcirculation state are single, and the accuracy and convenience are poor.

[0041] This example takes sepsis patients as an example. In the diagnosis and treatment of sepsis, early fluid resuscitation is considered one of the core treatment measures. Although early fluid resuscitation and other treatment measures for sepsis patients have restored macroscopic hemodynamic parameters, the mortality rate of sepsis patients is still very high. The reasonable explanation of the researchers is that although macroscopic hemodynamics have returned to the normal range, microcirculation perfusion is still insufficient. Microcirculatory disorders are the key cause of multiple organ failure caused by sepsis, and the mortality rate of sepsis is closely related to organ failure.

[0042] At different stages of sepsis and septic shock, the relationship between macrocirculation and microcirculation gradually disappears as the disease progresses. For example, in the late stage of sepsis, there is no relationship between blood pressure, pulse and microcirculation. This phenomenon is called "dynamic inconsistency" or "macro-micro uncoupling", that is, the macrocirculation such as blood pressure and pulse has stabilized, but its tissue hypoperfusion and cellular hypoxia have not improved significantly, and multiple organ failure may further occur. If this state cannot be monitored in a timely and effective manner, it will accelerate organ dysfunction and even lead to patient death. Therefore, for patients with sepsis, the plan that only aims at normal macrocirculation can no longer meet the needs of clinical treatment at this stage. Therefore, a fast, effective and convenient method of monitoring microcirculatory disorders is particularly important in the treatment of sepsis.

[0043] refer to Figure 1 , Figure 2 As shown, this embodiment provides a measuring device for microcirculation monitoring, including an upper finger clamp 7 and a lower finger clamp 8, an electromagnetic motion unit 4, a pressure sensing module 2, a pulse and blood oxygen detection module 1, a control module 3, and a timing module 5.

[0044] The upper finger clamp 7 is relatively arranged above the lower finger clamp 8, and the upper finger clamp 7 can move toward or away from the lower finger clamp 8 in the vertical direction. Specifically, the upper finger clamp 7 and the lower finger clamp 8 are arranged in an opening, and one end of the opening can clamp the monitored person's finger between the upper finger clamp 7 and the lower finger clamp 8. When the upper finger clamp 7 and the lower finger clamp 8 are clamped inwardly, that is, the upper finger clamp 7 approaches the lower finger clamp 8 and clamps the monitored person's finger in the middle, as shown in FIG. Figure 2 As shown, preferably, the lower surface of the upper finger clamp 7 and the upper surface of the lower finger clamp 8 are set as curved surfaces, and the clamping areas of the two curved surfaces are close to the outer contour of the fingers to facilitate the insertion and clamping of the fingers.

[0045] Among them, the electromagnetic motion unit 4 includes a permanent magnet 402, an electromagnet 403, an elastic member 401 and a connecting column 404. The permanent magnet 402 is fixed in the lower finger clamp 8, and the electromagnet 403 is also arranged in the lower finger clamp 8. The electromagnet 403 is movably arranged below the permanent magnet 402. Specifically, a space allowing the electromagnet 403 to move is provided in the lower finger clamp 8. The two ends of the electromagnet 403 are respectively connected to two connecting columns 404. The other ends of the connecting columns 404 extend upward and are respectively fixed under the upper finger clamp 7. The electromagnet 403 generates a repulsive force with the permanent magnet 402 by energizing. The connecting column 404 is used to transmit the repulsive force of the electromagnet 403 to the upper finger clamp 7. The connecting column 404 drives the upper finger clamp 7 to move along the vertical direction. The lower finger clamp 8 moves, and the two ends of the elastic member 401 are fixedly arranged between the upper finger clamp 7 and the lower finger clamp 8. The upper finger clamp 7 moves downward to compress the elastic member 401. When the electromagnet 403 is powered off, the repulsive force between the electromagnet 403 and the permanent magnet 402 disappears, and the elastic member 401 drives the upper finger clamp 7 to reset. The elastic member 401 is preferably a spring, and the two ends of the spring are respectively fixed between the upper finger clamp 7 and the lower finger clamp 8. The connecting column 404 extends upward at the two ends of the electromagnet 403, passes through the axis of the spring, and is fixedly connected to the upper finger clamp 7. The connecting column 404 can slide vertically on the lower finger clamp 8. The electromagnetic motion unit 4 also includes a control circuit. The energized wire connected to the electromagnet 403 can pass through the connecting column 404 and be connected to the control circuit.

[0046] By using the electromagnetic motion unit 4, the clamping degree of the upper finger clamp 7 and the lower finger clamp 8 can be controlled by changing the current passing through the electromagnet 403. When the electromagnet 403 is powered off, the upper finger clamp 7 and the lower finger clamp 8 can be quickly separated. No other mechanical components (such as an air pump) are required, so that the device is relatively light and easy to carry, suitable for use in emergency and critical wards.

[0047] The pressure sensing module 2 is arranged on the surface of the lower finger clamp 8. When the finger is placed on the lower finger clamp 8, the first pressure is detected and the first pressure signal is sent; when the upper finger clamp 7 squeezes the finger, the second pressure is detected and the second pressure signal is sent; when the second pressure reaches the threshold, the third pressure signal is sent, and the pressure sensing module 2 stops detecting. Among them, the pressure sensing module 2 is preferably a thin film pressure sensor and is attached to the upper surface of the lower finger clamp 8. It can fit tightly with the finger and will not interfere with the detection when pressure is applied for detection. If the upper surface of the lower finger clamp 8 is set as a curved surface, the pressure sensing module 2 fits with the curved surface inside the curved surface. Among them, the pressure sensing module 2 sets a threshold for the second pressure. The clamping force on the finger can block the blood flow of the finger and make the skin of the fingertip pale within this threshold. The threshold value is usually in the range of 5N-7N.

[0048] The pulse and blood oxygen detection module 1 is used to detect the blood oxygen saturation and pulse at the fingertips. The pulse and blood oxygen detection module 1 includes a signal sending device 101 and a signal receiving device 102. The signal sending device 101 is arranged on the lower surface of the upper finger clamp 7. The signal receiving device 102 is arranged corresponding to the signal sending device 101 and is arranged on the upper surface of the lower finger clamp 8. The signal sending device 101 includes a red light emitting diode and an infrared light emitting diode. The signal receiving device 102 receives red light and infrared light that penetrate the fingers respectively, and measures the blood oxygen saturation according to the absorption characteristics of different oxygenated hemoglobin (HbO2) and reduced hemoglobin (Hb) to red light and infrared light.

[0049] The pulse and blood oxygen detection module 1 is connected to the pressure sensing module 2. When the pulse and blood oxygen detection module 1 receives a first pressure signal, it detects a first blood oxygen saturation value and sends a first detection signal; when it receives a second pressure signal, it detects a second blood oxygen saturation value and sends a second detection signal; when it receives a third pressure signal, it detects a third blood oxygen saturation value and sends a third detection signal.

[0050] The timing module 5 is used to record the time interval from when the electromagnetic motion unit 4 is powered off to when the third detection signal is consistent with the first detection signal after the third pressure signal is sent out. This time interval is the capillary refilling time.

[0051] The control module 3 includes a signal receiving unit, a data processing unit and a control unit. When the signal receiving unit receives the first pressure signal, the control unit controls the electromagnetic motion unit 4 to be powered on; when the signal receiving unit receives the second pressure signal, the control unit controls the current of the electromagnetic motion unit 4 to increase; when the signal receiving unit receives the third pressure signal, the control unit controls the electromagnetic motion unit 4 to be powered off, and the control unit starts the timing module 5; the signal receiving unit receives the first detection signal, the second detection signal and the third detection signal, and the data processing unit determines that when the third detection signal is consistent with the first detection signal, the control unit controls the timing module 5 to stop timing. It should be noted that when the difference between the third blood oxygen saturation value and the first blood oxygen saturation value is less than 2%, it is determined that the third detection signal is consistent with the first detection signal.

[0052] After the timing module 5 stops timing, the control unit controls the pulse and blood oxygen detection module 1 to measure the pulse. When blood passes through the blood vessels, the flow of blood will cause the skin to expand and contract slightly, which in turn causes the intensity of the reflected light signal to change. The pulse and blood oxygen detection module 1 can obtain the pulse information of the human body by analyzing the change of the reflected signal.

[0053] In this way, through the interaction between the units and modules of the device, the capillary refill time can be intelligently measured, and the accuracy and portability are significantly improved. In addition, while measuring the capillary refill time, the pulse and blood oxygen detection module 1 can measure the pulse value and blood oxygen saturation value to obtain multiple indicators for monitoring the microcirculation status.

[0054] The measuring device for microcirculation monitoring also includes a shell 11, which is preferably a transverse "U"-shaped structure. An upper finger clamp 7 is movably provided on the upper side of the opening of the shell 11, and a lower finger clamp 8 is fixedly provided on the lower side of the opening of the shell 11. A through accommodating space is formed between the upper finger clamp 7 and the shell 11, and between the lower finger clamp 8 and the shell 11, and the accommodating space is located inside the shell 11.

[0055] In a preferred embodiment, a body temperature measurement module 9 is provided in the housing 11. The body temperature measurement module 9 is used to measure the body temperature at the finger tip. The body temperature measurement module 9 includes a pyroelectric infrared sensor 901 and a preamplifier circuit 902. The pyroelectric infrared sensor 901 is provided on the upper finger clip 7. The pyroelectric infrared sensor 901 absorbs the electromagnetic waves generated by the molecular movement of the finger pulp, and produces temperature changes, so that the charge density of the surface electrode of the pyroelectric infrared sensor 901 changes and then generates a pyroelectric current. The weak pyroelectric current is converted into a pressure output through the preamplifier circuit 902, so as to measure the peripheral body temperature. The body temperature measurement module 9 is connected to the storage and display module 10, and the measured body temperature is stored and displayed in the storage and display module 10.

[0056] The device of the present application comprehensively evaluates the microcirculatory status of the patient by monitoring the blood oxygen saturation, pulse, body temperature and CRT of the patient's extremities. It not only makes the monitoring indicators objective, but also enables medical staff to more accurately and comprehensively evaluate the patient's fluid replacement and condition changes, further reducing the mortality rate of sepsis patients.

[0057] The measuring device for microcirculation monitoring also includes a storage and display module 10, which includes a data storage unit and a display screen. The display screen is arranged on the outside of the shell 11, and the data storage unit is arranged on the inside of the shell 11. The data storage unit is connected to the pulse and blood oxygen detection module 1, the body temperature measurement module 9 and the timing module 5. The display screen is used to display the pulse value, blood oxygen saturation value, temperature value and capillary refill time.

[0058] An alarm module and a power module 6 are also provided in the housing 11, and the alarm module is connected to the timing module 5. The alarm module includes a sound alarm and / or a light alarm. When the alarm module detects that the measurement index is abnormal, it can issue a sound and / or light alarm to remind the staff to check. For example, when the capillary refill time is greater than 3 seconds, a sound and / or light alarm will be issued.

[0059] The power module 6 provides power for the control module 3, the timing module 5, the pulse and blood oxygen detection module 1, the pressure sensing module 2, the electromagnetic motion unit 4, the body temperature measurement module 9, the storage and display module 10, and the alarm module.

[0060] The housing 11 is also provided with a charging port 12 and a data transmission port 13 . The charging port 12 is connected to the power module 6 , and the data transmission port 13 is connected to the data storage unit.

[0061] This embodiment further provides a method for measuring microcirculation monitoring, using a microcirculation monitoring device provided in the above embodiment, and the method for measuring microcirculation monitoring includes a method for measuring capillary refill time, which is specifically as follows:

[0062] The finger to be tested is placed on the pressure sensing module 2, and the pressure sensing module 2 detects a first pressure and sends a first pressure signal;

[0063] The pulse and blood oxygen detection module 1 receives the first pressure signal, detects the first blood oxygen saturation value and sends a first detection signal;

[0064] The control module 3 receives the first pressure signal and controls the electromagnetic motion unit 4 to be energized, so that a repulsive force is generated between the electromagnet 403 and the permanent magnet 402, and the connecting column 404 drives the upper finger clamp 7 to move closer to the lower finger clamp 8;

[0065] The pressure sensing module 2 detects a second pressure and sends a second pressure signal;

[0066] The pulse and blood oxygen detection module 1 receives the second pressure signal, detects the second blood oxygen saturation value and sends a second detection signal;

[0067] The control module 3 receives the second pressure signal and controls the current of the electromagnetic motion unit 4 to increase;

[0068] When the second pressure detected by the pressure sensing module 2 reaches a threshold, a third pressure signal is sent and detection is stopped;

[0069] The pulse and blood oxygen detection module 1 receives the third pressure signal, detects the third blood oxygen saturation value and sends a third detection signal;

[0070] The control module 3 receives the third pressure signal, controls the electromagnetic motion unit 4 to cut off the power, and the elastic member 401 drives the upper finger clamp 7 to move away from the lower finger clamp 8, and starts the timing module 5;

[0071] Timing module 5 starts timing;

[0072] The control module 3 receives the first detection signal, the second detection signal and the third detection signal, and determines whether the third detection signal is consistent with the first detection signal. If the third detection signal is inconsistent with the first detection signal, the timing module 5 continues to time. If the third detection signal is consistent with the first detection signal, the timing module 5 stops timing.

[0073] The timing time of the timing module 5 is the capillary refill time.

[0074] Through the cooperation of the electromagnetic motion unit 4, the pressure sensing module 2 and the control module 3, the pressure exerted on the finger by the upper finger clamp 7 and the lower finger clamp 8 can be accurately controlled, and the electromagnetic motion unit 4 enables the upper finger clamp 7 and the lower finger clamp 8 to spring open quickly, allowing the finger to immediately refill its capillaries and avoid detection errors caused by releasing too slowly. The first blood oxygen saturation value and the third blood oxygen saturation value obtained by the pulse and blood oxygen detection module 1 are equal to determine the time point when the finger resumes blood flow and becomes rosy, thereby accurately detecting the capillary refill time.

[0075] The technical features of the above embodiments may be arbitrarily combined (as long as there is no contradiction in the combination of these technical features). To make the description concise, not all possible combinations of the technical features in the above embodiments are described; these embodiments that are not explicitly written should also be considered to be within the scope of this specification.

Claims

1. A measuring device for microcirculation monitoring, characterized in that: include: An upper finger clamp (7) and a lower finger clamp (8), wherein the upper finger clamp (7) is relatively arranged above the lower finger clamp (8), and the upper finger clamp (7) can move toward or away from the lower finger clamp (8) in a vertical direction; The electromagnetic motion unit (4) comprises a permanent magnet (402), an electromagnet (403), an elastic member (401) and a connecting column (404), wherein the permanent magnet (402) is fixed in the lower finger clamp (8); the electromagnet (403) is movably arranged below the permanent magnet (402) and generates a repulsive force between the electromagnet (403) and the permanent magnet (402) by energizing; the two ends of the connecting column (404) are respectively fixedly connected to the electromagnet (403) and the upper finger clamp (7) for transmitting the repulsive force of the electromagnet (403) to the upper finger clamp (7); the elastic member (401) is arranged between the upper finger clamp (7) and the lower finger clamp (8) for driving the upper finger clamp (7) to reset; A pressure sensing module (2) is arranged on the surface of the lower finger clamp (8), and is used to detect a first pressure and send a first pressure signal when a finger is placed on the lower finger clamp (8); detect a second pressure and send a second pressure signal when the upper finger clamp (7) squeezes the finger; and send a third pressure signal and stop detecting when the second pressure reaches a threshold value; The pulse and blood oxygen detection module (1) is arranged on the upper finger clamp (7) and the lower finger clamp (8), and is used to detect a first blood oxygen saturation value and send a first detection signal when receiving a first pressure signal; detect a second blood oxygen saturation value and send a second detection signal when receiving a second pressure signal; and detect a third blood oxygen saturation value and send a third detection signal when receiving a third pressure signal; A timing module (5) for recording the time interval from when the electromagnetic motion unit (4) is powered off to when the third detection signal is consistent with the first detection signal after the third pressure signal is emitted; The control module (3) is used to control the electromagnetic motion unit (4) to be powered on when receiving a first pressure signal; to control the current of the electromagnetic motion unit (4) to increase when receiving a second pressure signal; to control the electromagnetic motion unit (4) to be powered off when receiving a third pressure signal, and to start the timing module (5); and to control the timing module (5) to stop timing when the third detection signal is consistent with the first detection signal, and to control the pulse and blood oxygen detection module (1) to measure the pulse.

2. A measuring device for microcirculation monitoring according to claim 1, characterized in that: The pulse and blood oxygen detection module (1) comprises a signal sending device (101) and a signal receiving device (102); the signal sending device (101) is arranged on the lower surface of the upper finger clamp (7); the signal receiving device (102) is arranged corresponding to the signal sending device (101) and is arranged on the upper surface of the lower finger clamp (8); the signal sending device (101) comprises a red light emitting diode and an infrared light emitting diode; the signal receiving device (102) receives red light and infrared light that respectively penetrate the finger.

3. A measuring device for microcirculation monitoring according to claim 2, characterized in that: The microcirculation monitoring measuring device further comprises a housing (11), wherein a body temperature measuring module (9) is arranged in the housing (11), wherein the body temperature measuring module (9) is used to measure the body temperature at the finger tip, wherein the body temperature measuring module (9) comprises a pyroelectric infrared sensor (901), and wherein the pyroelectric infrared sensor (901) is arranged on the lower surface of the upper finger clamp (7).

4. A measuring device for microcirculation monitoring according to claim 3, characterized in that: The microcirculation monitoring measuring device further comprises a storage display module (10), the storage display module (10) comprising a data storage unit and a display screen, the display screen being arranged on the outside of the housing (11), the data storage unit being arranged on the inside of the housing (11), the data storage unit being connected to the pulse and blood oxygen detection module (1), the body temperature measurement module (9) and the timing module (5), and the display screen being used to display the pulse value, blood oxygen saturation value, temperature value and capillary refill time.

5. A measuring device for microcirculation monitoring according to claim 4, characterized in that: An alarm module is also provided in the housing (11), and the alarm module is connected to the timing module (5). When the timing time of the timing module (5) exceeds a preset time, the alarm module issues an alarm.

6. A measuring device for microcirculation monitoring according to claim 5, characterized in that: A power module (6) is also provided in the housing (11), and the power module (6) provides power to the control module (3), the timing module (5), the pulse and blood oxygen detection module (1), the pressure sensing module (2), the electromagnetic motion unit (4), the body temperature measurement module (9), the storage display module (10), and the alarm module.

7. A measuring device for microcirculation monitoring according to claim 6, characterized in that: The housing (11) is provided with a charging port (12), and the charging port (12) is connected to the power module (6).

8. A measuring device for microcirculation monitoring according to claim 6, characterized in that: The housing (11) is provided with a data transmission port (13), and the data transmission port (13) is connected to the data storage unit.

9. A measurement method for microcirculation monitoring, characterized in that: A microcirculation monitoring measuring device according to any one of claims 1 to 8 is used, wherein the microcirculation monitoring measuring method includes a capillary refill time measuring method, which is specifically as follows: The finger to be tested is placed on the pressure sensing module (2), and the pressure sensing module (2) detects a first pressure and sends a first pressure signal; The pulse and blood oxygen detection module (1) receives a first pressure signal, detects a first blood oxygen saturation value and sends a first detection signal; The control module (3) receives the first pressure signal and controls the electromagnetic motion unit (4) to be energized, so that a repulsive force is generated between the electromagnet (403) and the permanent magnet (402), and the connecting column (404) drives the upper finger clamp (7) to move closer to the lower finger clamp (8); The pressure sensing module (2) detects a second pressure and sends a second pressure signal; The pulse and blood oxygen detection module (1) receives a second pressure signal, detects a second blood oxygen saturation value and sends a second detection signal; The control module (3) receives the second pressure signal and controls the current of the electromagnetic motion unit (4) to increase; When the second pressure detected by the pressure sensing module (2) reaches a threshold value, a third pressure signal is sent and detection is stopped; The pulse and blood oxygen detection module (1) receives a third pressure signal, detects a third blood oxygen saturation value and sends a third detection signal; The control module (3) receives the third pressure signal, controls the electromagnetic motion unit (4) to cut off power, and the elastic member (401) drives the upper finger clamp (7) to move away from the lower finger clamp (8), thereby starting the timing module (5); The timing module (5) starts timing; The control module (3) receives the first detection signal, the second detection signal and the third detection signal, and determines whether the third detection signal is consistent with the first detection signal; if the third detection signal is inconsistent with the first detection signal, the timing module (5) continues to time; if the third detection signal is consistent with the first detection signal, the timing module (5) stops timing; The timing time of the timing module (5) is the capillary refill time.

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