A vital signs monitoring device

Abstract

The utility model relates to the field of medical technology, and in particular to a vital sign monitoring device. The vital sign monitoring device of the utility model comprises: an electroencephalogram signal monitoring module and a main control module. The main control module obtains the electroencephalogram signal of the monitored object through the electroencephalogram signal monitoring module. The vital sign monitoring device of the utility model can continuously and in real time monitor various vital signs of the monitored object including electroencephalogram signals by setting an electroencephalogram signal detection module, so that only the vital sign monitoring device needs to be used when rescuing the monitored object, which saves costs while improving monitoring efficiency, ensuring that relevant personnel can obtain the physiological state of the monitored object in a timely manner and intervene in a timely manner, reducing various potential risks.

Description

Technical Field

[0001] The utility model relates to the field of medical technology, in particular to a vital sign monitoring device. Background Art

[0002] A vital signs monitor is a medical device that is mainly used to continuously and in real time monitor the vital signs of the monitored object to ensure timely detection and treatment of conditions that may threaten the health of the monitored object. This instrument is widely used in various departments of hospitals, especially in intensive care units (ICUs), operating rooms, and emergency departments where the physiological state of the monitored object needs to be closely observed.

[0003] Vital sign monitors mainly collect data through various sensors and electrodes. The data that can be monitored include: heart rate, blood pressure, respiratory rate, blood oxygen saturation, body temperature, etc. If you want to obtain the brain activity of the monitored object when rescuing the monitored object, you need to use a special EEG monitor to monitor the monitored object. This method greatly increases the monitoring cost, and the use of two instruments for monitoring may lead to untimely rescue and cause unpredictable harm to the monitored object. Utility Model Content

[0004] The embodiment of the utility model provides a vital sign monitoring device to solve the problem in the prior art that using a special electroencephalogram monitor to monitor a monitored object increases monitoring costs and may even cause unpredictable harm to the monitored object.

[0005] In a first aspect, the utility model provides a vital signs monitoring device, wherein the circuit board of the vital signs monitoring device comprises: an electroencephalogram (EEG) signal monitoring module and a main control module, wherein the EEG signal monitoring module is electrically connected to the main control module, and the main control module is used to obtain the EEG signal of the monitored object through the EEG signal monitoring module and control the vital signs monitoring device.

[0006] In one embodiment, the circuit board of the vital signs monitoring device also includes: a non-invasive blood pressure acquisition module, the main control module is electrically connected to the non-invasive blood pressure acquisition module, and the non-invasive blood pressure acquisition module is used to obtain the blood pressure signal of the monitored object.

[0007] In one embodiment, the circuit board of the vital signs monitoring device further includes: an ECG acquisition module, the main control module is electrically connected to the ECG acquisition module, and the ECG acquisition module is used to acquire the ECG signal of the monitored object.

[0008] In one embodiment, the circuit board of the vital signs monitoring device also includes: a blood oxygen pulse acquisition module, the main control module is electrically connected to the blood oxygen pulse acquisition module, and the blood oxygen pulse acquisition module is used to obtain the blood oxygen signal of the monitored object.

[0009] In one embodiment, the circuit board of the vital signs monitoring device also includes: a body temperature monitoring and acquisition module, a display touch module, a USB communication module and a power supply module, and the main control module is electrically connected to the body temperature monitoring and acquisition module, the display touch module, the USB communication module and the power supply module respectively.

[0010] In one embodiment, the EEG signal monitoring module includes: a preamplifier circuit and a trap circuit, the input end of the preamplifier circuit is used to connect to the EEG sensor, the output end of the preamplifier circuit is electrically connected to the input end of the trap circuit, and the output end of the trap circuit is electrically connected to the main control module.

[0011] In one embodiment, the EEG signal monitoring module also includes: a high-pass and low-pass filter circuit, wherein the input end of the high-pass and low-pass filter circuit is connected to the output end of the preamplifier circuit, and the output end of the high-pass and low-pass filter circuit is electrically connected to the input end of the trap circuit.

[0012] In one embodiment, the EEG signal monitoring module further includes: a post-amplifier circuit, wherein the input end of the post-amplifier circuit is connected to the output end of the high-pass and low-pass filter circuits, and the output end of the post-amplifier circuit is connected to the input end of the trap circuit.

[0013] In one embodiment, the EEG signal monitoring module further includes: an analog-to-digital conversion circuit, wherein the input end of the analog-to-digital conversion circuit is connected to the output end of the trap circuit, and the output end of the analog-to-digital conversion circuit is connected to the input end of the main control module.

[0014] In one embodiment, the trap circuit includes: a parallel resonant trap branch, a first operational amplifier and a second operational amplifier, the first input end of the parallel resonant trap branch is connected to the output end of the post-amplification circuit, the output end of the parallel resonant trap branch is connected to the non-inverting input end of the first operational amplifier, the output end of the first operational amplifier is connected to the input end of the analog-to-digital conversion circuit, the output end of the first operational amplifier is connected to the inverting input end of the first operational amplifier, the output end of the first operational amplifier is connected to the non-inverting input end of the second operational amplifier, the output end of the second operational amplifier is connected to the second input end of the parallel resonant trap branch, and the output end of the second operational amplifier is connected to the inverting input end of the second operational amplifier.

[0015] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0016] The vital signs monitoring device of the utility model comprises: an EEG signal monitoring module and a main control module. The main control module obtains the EEG signal of the monitored object through the EEG signal monitoring module. The vital signs monitoring device of the utility model can continuously and in real time monitor various vital signs of the monitored object including EEG signals by setting up the EEG signal detection module, so that only the vital signs monitoring device needs to be used when rescuing the monitored object, which saves costs and improves monitoring efficiency, ensures that relevant personnel can obtain the physiological state of the monitored object in time and intervene in time, and reduces various potential risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the module structure of a circuit board of a vital signs monitoring device provided by an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the module structure of a circuit board of a vital signs monitoring device provided by an embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the module structure of the EEG signal monitoring module provided in one embodiment of the utility model;

[0021] Figure 4 This is a circuit connection diagram of a preamplifier circuit provided in one embodiment of the utility model;

[0022] Figure 5 This is a circuit connection diagram of a high-pass and low-pass filter circuit provided by an embodiment of the utility model;

[0023] Figure 6 It is a circuit connection diagram of a post-amplifier circuit provided by an embodiment of the utility model;

[0024] Figure 7 This is a circuit connection diagram of a trap circuit provided in one embodiment of the utility model;

[0025] Among them, 1. EEG signal monitoring module, 2. main control module, 3. non-invasive blood pressure acquisition module, 4. ECG acquisition module, 5. blood oxygen pulse acquisition module, 6. body temperature monitoring acquisition module, 7. display touch module, 8. USB communication module, 9. power supply module, 11. preamplifier circuit, 12. notch circuit, 13. high and low pass filter circuit, 14. post-amplifier circuit, 15. analog-to-digital conversion circuit, 121. parallel resonant notch branch. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0030] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0031] In one embodiment, if Figure 1 As shown, a schematic diagram of the module structure of a circuit board of a vital sign monitoring device is provided, including: an EEG signal monitoring module 1 and a main control module 2, the EEG signal monitoring module 1 is electrically connected to the main control module 2, and the main control module 2 is used to obtain the EEG signal of the monitored object through the EEG signal monitoring module 1 and control the vital sign monitoring device.

[0032] It is understandable that the main control module 2 is a processor or includes a processor in the main control module 2. It is understandable that the main control module 2 can be any processor, the main control module 2 can be an MCU, the main control module 2 can also be a CPU, the main control module 2 can also be a DSP, preferably, the main control module 2 is an MCU.

[0033] Specifically, an amplifier may be provided in the EEG signal monitoring module 1, and the amplifier amplifies the collected EEG signals. It is understandable that only one amplifier may be provided in the EEG signal monitoring module 1 for primary amplification, or secondary amplification may be provided in the EEG signal monitoring module 1, or tertiary amplification may be provided in the EEG signal monitoring module 1; a filter may be provided in the EEG signal monitoring module 1, and the filter filters the collected EEG signals. It is understandable that a high-pass filter may be provided, or a low-pass filter may be provided; an isolator may also be provided in the EEG signal monitoring module 1, and the isolator isolates the power signal input into the module and / or the EEG signal input into the main control module 2.

[0034] The working process of the above-mentioned vital sign monitoring device is as follows: the EEG signal monitoring module 1 obtains EEG signals through electrodes placed on the scalp, and transmits the EEG signals to the main control module 2 after processing.

[0035] The vital signs monitoring device of this embodiment, by providing an EEG signal detection module, can continuously and in real time monitor various vital signs of the monitored object, including EEG signals, so that only the vital signs monitoring device needs to be used when rescuing the monitored object. While saving costs, it improves monitoring efficiency, ensures that relevant personnel can obtain the physiological status of the monitored object in a timely manner and intervene in a timely manner, and reduces various potential risks.

[0036] like Figure 2As shown, a schematic diagram of the module structure of a circuit board of a vital signs monitoring device is provided.

[0037] In one embodiment, if Figure 2 As shown in the above Figure 1 On the basis of the vital signs monitoring device shown, the circuit board of the vital signs monitoring device also includes: a non-invasive blood pressure acquisition module 3, the main control module 2 is electrically connected to the non-invasive blood pressure acquisition module 3, and the non-invasive blood pressure acquisition module 3 is used to obtain the blood pressure signal of the monitored object.

[0038] Specifically, the non-invasive blood pressure acquisition module 3 is used to measure the arterial blood pressure of the monitored subject, including systolic pressure and diastolic pressure.

[0039] The working process of the above-mentioned vital signs monitoring equipment is: using an automatically inflated and deflated cuff and a pressure sensor, in conjunction with a special algorithm, to indirectly measure the arterial blood pressure value of the monitored object, including systolic pressure, diastolic pressure and mean arterial pressure, and transmit these signals to the main control module 2 after processing.

[0040] The vital signs monitoring device of this embodiment can realize continuous or timed detection and provide real-time blood pressure data by setting a non-invasive blood pressure acquisition module 3 in the circuit board, so as to facilitate relevant personnel to track the blood pressure change trend of the monitored object and intervene in time, thereby further reducing the potential risks of the monitored object.

[0041] In one embodiment, if Figure 2 As shown in the above Figure 1 On the basis of the vital signs monitoring device shown, the circuit board of the vital signs monitoring device also includes: an ECG acquisition module 4, the main control module 2 is electrically connected to the ECG acquisition module 4, and the ECG acquisition module 4 is used to obtain the ECG signal of the monitored object.

[0042] Specifically, the ECG acquisition module 4 is used to acquire the ECG signal of the monitored object, analyze the ECG signal, and calculate various parameters such as heart rate, heart rhythm, ST segment changes, etc. Preferably, a display screen is set to display the ECG signal in real time.

[0043] The working process of the above-mentioned vital signs monitoring device is: electrodes are placed on different parts of the monitored object using a 3-lead, 5-lead or more lead method, the ECG acquisition module 4 acquires the ECG signal, and transmits the processed ECG signal to the main control module 2.

[0044] The vital signs monitoring device of this embodiment can display ECG signals in real time by setting an ECG acquisition module 4 on the circuit board, which is convenient for relevant personnel to observe and analyze, and helps relevant personnel to identify various ECG abnormalities.

[0045] In one embodiment, if Figure 2 As shown in the above Figure 1 On the basis of the vital signs monitoring device shown, the circuit board of the vital signs monitoring device also includes: a blood oxygen pulse acquisition module 5, the main control module 2 is electrically connected to the blood oxygen pulse acquisition module 5, and the blood oxygen pulse acquisition module 5 is used to obtain the blood oxygen signal of the monitored object.

[0046] Specifically, the blood oxygen pulse acquisition module 5 is used to acquire the blood oxygen saturation and pulse rate of the monitored subject.

[0047] The working process of the above-mentioned vital signs monitoring device is: using the pulse oximeter probe for detection, calculating the blood oxygen saturation percentage and pulse rate through relevant algorithms, and transmitting these signals to the main control module 2 after processing.

[0048] The vital signs monitoring device of this embodiment, by setting a blood oxygen pulse acquisition module 5 on the circuit board, can not only perform real-time monitoring, but also record and save relevant data, so that relevant personnel can review the historical trends of the vital signs of the monitored object.

[0049] In one embodiment, if Figure 2 As shown in the above Figure 1 On the basis of the vital signs monitoring device shown, the circuit board of the vital signs monitoring device also includes: a body temperature monitoring and acquisition module 6, a display touch module 7, a USB communication module 8 and a power supply module 9, and the main control module 2 is electrically connected to the body temperature monitoring and acquisition module 6, the display touch module 7, the USB communication module 8 and the power supply module 9 respectively.

[0050] Specifically, the body temperature monitoring and acquisition module 6 is used to obtain the body temperature of the monitored object, and the monitored object can be monitored using a temperature sensor or an electronic body temperature probe; the display touch module 7 is used to display the vital signs parameters of the monitored object, and at the same time enable relevant personnel to perform human-computer interaction; the USB communication module 8 is used to connect to the external network or transmit data. As other implementation methods, the USB communication module 8 can also be a serial port communication module, or an Ethernet port communication module; the power supply module 9 is used to power the vital signs monitoring equipment.

[0051] The vital signs monitoring device of this embodiment can obtain the body temperature of the monitored object in real time by setting a body temperature monitoring and acquisition module 6 in the circuit board; by setting a display touch module 7 in the circuit board, while ensuring that relevant personnel can accurately obtain the information of the monitored object, the operation process is greatly simplified and the overall work efficiency and service quality are improved; by setting a USB communication module 8, a convenient and efficient data exchange method is provided for the vital signs monitoring device.

[0052] like Figure 3As shown, a schematic diagram of the module structure of an EEG signal monitoring module 1 is provided.

[0053] In one embodiment, if Figure 3 As shown in the above Figure 1 Based on the vital signs monitoring device shown, the EEG signal monitoring module 1 includes: a preamplifier circuit 11 and a trap circuit 12, the input end of the preamplifier circuit 11 is used to connect the EEG sensor, the output end of the preamplifier circuit 11 is electrically connected to the input end of the trap circuit 12, and the output end of the trap circuit 12 is electrically connected to the main control module 2.

[0054] It is understandable that the preamplifier circuit 11 can be any amplifier, such as LM6134, AD8541, or AD620. Figure 4 As shown, the preamplifier circuit 11 adopts a low-noise integrated instrument amplifier AD620, and the gain resistor connection end of the instrument amplifier U1 is connected to a gain resistor R1. The amplification factor of the instrument amplifier U1 can be adjusted by changing the resistance value of R1, and the resistors R2 and R3 can be set at the input end to protect the instrument amplifier U1.

[0055] It is understandable that the EEG sensor is an electrode placed on the scalp. Preferably, the present embodiment uses a silver tube electrode, and physiological saline is applied between the electrode and the skin to enhance the connectivity and conductivity between the electrode and the skin. The silver tube electrode method adopts the international 10-20 system electrode placement method.

[0056] The trap circuit 12 can be any type of trap circuit 12. Preferably, the trap circuit 12 is a trap circuit 12 that can suppress 50HZ\60HZ industrial frequency noise. Furthermore, a software switch or hardware switch for switching the suppressed industrial frequency can be set in the trap circuit 12.

[0057] The working process of the above-mentioned vital sign monitoring device is: using the preamplifier circuit 11 to amplify the EEG signal collected by the EEG sensor, and using the trap circuit 12 to suppress the interference of the 50Hz AC signal in the power supply.

[0058] The vital sign monitoring device of this embodiment uses the preamplifier circuit 11 to preamplify the EEG signal, and uses the trap circuit 12 to effectively suppress the interference of the 50Hz AC signal in the power supply, which greatly improves the collection quality of the EEG signal and the stability of the circuit, and further ensures the accuracy of the analysis of the EEG signal.

[0059] In one embodiment, if Figure 3As shown, based on the above embodiment, the EEG signal monitoring module 1 also includes: a high-pass and low-pass filtering circuit 13, the input end of the high-pass and low-pass filtering circuit 13 is connected to the output end of the preamplifier circuit 11, and the output end of the high-pass and low-pass filtering circuit 13 is electrically connected to the input end of the trap circuit 12.

[0060] It is understandable that the high-pass and low-pass filter circuit 13 can be any high-pass and low-pass filter circuit 13, which can include a high-pass filter circuit and a low-pass filter circuit, or a high-pass filter circuit and a low-pass filter circuit arranged together. Preferably, the high-pass and low-pass filter circuit 13 is as follows: Figure 5 As shown, the capacitor C1, capacitor C3 and resistor R6 are set at the non-inverting input end of the comparator U2 to form a high-pass filter, and the resistor R5, resistor R4 and capacitor C2 form a low-pass filter. At the same time, the negative feedback formed by the inverting input end of the comparator U2 further adjusts the signal.

[0061] The working process of the above-mentioned vital sign monitoring device is as follows: the EEG signal is pre-amplified by the pre-amplifier circuit 11 and then flows to the high-pass and low-pass filter circuit 13 , and then flows to the trap circuit 12 after being high-pass filtered and low-pass filtered by the high-pass and low-pass filter circuit 13 .

[0062] The vital sign monitoring device of this embodiment is provided with a high-pass and low-pass filter circuit 13 between the preamplifier circuit 11 and the trap circuit 12. The high-pass and low-pass filter circuit 13 can remove signals in the frequency range of the EEG signal to play an anti-interference role, and can also prevent aliasing filtering, thereby further ensuring the stability of the EEG signal.

[0063] In one embodiment, if Figure 3 As shown, based on the above embodiment, the EEG signal monitoring module 1 also includes: a post-amplifier circuit 14, the input end of the post-amplifier circuit 14 is connected to the output end of the high-pass and low-pass filter circuit 13, and the output end of the post-amplifier circuit 14 is connected to the input end of the trap circuit 12.

[0064] It is understandable that the post-amplifier circuit 14 can be any type of amplifier. Preferably, the post-amplifier circuit 14 is as follows: Figure 6 As shown, it includes a third operational amplifier U3 and a feedback resistor R7. The feedback resistor R7 is connected to the output terminal and the inverting input terminal of the third operational amplifier U3. The parameters of the feedback resistor R7 can be adjusted according to the actual application to ensure that after the EEG signal is amplified by the post-amplification circuit 14, the weak EEG signal will become 0-2.5V. A resistor R8 can be set at the inverting input terminal of the third operational amplifier U3 to protect the third operational amplifier U3.

[0065] The working process of the above-mentioned vital sign monitoring device is as follows: the EEG signal is subjected to high-pass filtering and low-pass filtering by the high- and low-pass filtering circuit 13 , flows to the post-amplifier circuit 14 , is amplified by the post-amplifier circuit 14 , and then flows to the trap circuit 12 .

[0066] The vital signs monitoring device of this embodiment is provided with a post-amplifier circuit 14 between the high-pass and low-pass filter circuit 13 and the trap circuit 12. By adjusting the resistance in the post-amplifier circuit 14, the EEG signal will become 0-2.5V, thereby ensuring that the EEG signal transmitted to the main control module 2 can be detected by the main control module 2.

[0067] In one embodiment, if Figure 3 As shown, based on the above embodiment, the EEG signal monitoring module 1 also includes: an analog-to-digital conversion circuit 15, the input end of the analog-to-digital conversion circuit 15 is connected to the output end of the trap circuit 12, and the output end of the analog-to-digital conversion circuit 15 is connected to the input end of the main control module 2.

[0068] It is understandable that the analog-to-digital conversion circuit 15 can be any type of analog-to-digital converter, which can be PLC16LC770 or AD7606. Preferably, the model of the analog-to-digital conversion circuit 15 is AD7606, its sampling accuracy is 16 bits, the sampling frequency is 200KHZ, and the communication interface is SPI.

[0069] The working process of the above-mentioned vital sign monitoring device is as follows: the EEG signal flows to the analog-to-digital conversion circuit 15 after passing through the trap circuit 12 , and the analog-to-digital conversion circuit 15 converts the analog signal into a digital signal and then transmits it to the main control module 2 .

[0070] In the vital sign monitoring device of this embodiment, an analog-to-digital conversion module is arranged between the trap circuit 12 and the main control module 2. The analog-to-digital conversion circuit 15 exchanges data with the main control module 2 via SPI, thereby further ensuring the quality of the EEG signal.

[0071] In one embodiment, if Figure 7As shown, a circuit connection diagram of a trap circuit 12 is provided. On the basis of the above embodiment, the trap circuit 12 includes: a parallel resonant trap branch 121, a first operational amplifier U4 and a second operational amplifier U5. The first input end of the parallel resonant trap branch 121 is connected to the output end of the post-amplification circuit 14, the output end of the parallel resonant trap branch 121 is connected to the in-phase input end of the first operational amplifier U4, the output end of the first operational amplifier U4 is connected to the input end of the analog-to-digital conversion circuit 15, the output end of the first operational amplifier U4 is connected to the inverting input end of the first operational amplifier U4, the output end of the first operational amplifier U4 is connected to the in-phase input end of the second operational amplifier U5, the output end of the second operational amplifier U5 is connected to the second input end of the parallel resonant trap branch 121, and the output end of the second operational amplifier U5 is connected to the inverting input end of the second operational amplifier U5.

[0072] Preferably, the parallel resonant notch branch 121 is a double-T network, the notch circuit 12 is a double-T notch filter, and the parallel resonant notch branch 121 is formed by a RC low-pass filter and a RC high-pass filter in parallel. Specifically, the low-pass filter includes resistor R9, resistor R10 and capacitor C6, and the high-pass filter includes capacitor C5, capacitor C4 and resistor R11. The cutoff frequencies of the low-pass filter and the high-pass filter can be set according to actual application conditions. The cutoff frequency of the low-pass filter is a first preset frequency, and the cutoff frequency of the high-pass filter is a second preset frequency.

[0073] The working process of the above-mentioned vital signs monitoring equipment is as follows: when the EEG signal amplified by the post-amplifier circuit 14 flows to the parallel resonant notch branch 121, the signal with a frequency less than the first preset frequency can pass through the low-pass filter, and the signal with a frequency greater than the second preset frequency can pass through the high-pass filter. Only the signal with a frequency range between the first preset frequency and the second preset frequency will be blocked, and the signal passing through the parallel resonant notch branch 121 flows to the first operational amplifier U4 and the second operational amplifier U5. The first operational amplifier U4 and the second operational amplifier U5 use negative feedback to recombine the signals for output.

[0074] The vital sign monitoring device of this embodiment is provided with a double-T notch filter as the notch circuit 12, which can achieve greater attenuation for the frequency of 50 Hz or 60 Hz, and has less impact on the surrounding frequencies, thereby further improving the quality of the EEG signal.

[0075] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such 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 invention, and should be included in the protection scope of the present invention.

Claims

1. A vital signs monitoring device, characterized in that: The circuit board of the vital signs monitoring device includes: an EEG signal monitoring module and a main control module. The EEG signal monitoring module includes: a preamplifier circuit and a trap circuit. The input end of the preamplifier circuit is used to connect to the EEG sensor, the output end of the preamplifier circuit is electrically connected to the input end of the trap circuit, and the output end of the trap circuit is electrically connected to the main control module. The main control module is used to obtain the EEG signal of the monitored object through the EEG signal monitoring module and control the vital signs monitoring device.

2. The vital signs monitoring device according to claim 1, characterized in that: The circuit board of the vital signs monitoring device also includes: a non-invasive blood pressure acquisition module, the main control module is electrically connected to the non-invasive blood pressure acquisition module, and the non-invasive blood pressure acquisition module is used to obtain the blood pressure signal of the monitored object.

3. The vital signs monitoring device according to claim 1, characterized in that: The circuit board of the vital signs monitoring device also includes: an ECG acquisition module, the main control module is electrically connected to the ECG acquisition module, and the ECG acquisition module is used to acquire the ECG signal of the monitored object.

4. The vital signs monitoring device according to claim 1, characterized in that: The circuit board of the vital signs monitoring device also includes: a blood oxygen pulse acquisition module, the main control module is electrically connected to the blood oxygen pulse acquisition module, and the blood oxygen pulse acquisition module is used to obtain the blood oxygen signal of the monitored object.

5. The vital signs monitoring device according to claim 1, characterized in that: The circuit board of the vital signs monitoring device also includes: a body temperature monitoring and acquisition module, a display touch module, a USB communication module and a power supply module, and the main control module is electrically connected to the body temperature monitoring and acquisition module, the display touch module, the USB communication module and the power supply module respectively.

6. The vital signs monitoring device according to claim 1, characterized in that: The EEG signal monitoring module also includes: a high-pass and low-pass filter circuit, wherein the input end of the high-pass and low-pass filter circuit is connected to the output end of the preamplifier circuit, and the output end of the high-pass and low-pass filter circuit is electrically connected to the input end of the trap circuit.

7. The vital signs monitoring device according to claim 6, characterized in that: The EEG signal monitoring module further includes: a post-amplifier circuit, the input end of the post-amplifier circuit is connected to the output end of the high-pass and low-pass filter circuits, and the output end of the post-amplifier circuit is connected to the input end of the trap circuit.

8. The vital signs monitoring device according to claim 7, characterized in that: The EEG signal monitoring module also includes: an analog-to-digital conversion circuit, the input end of the analog-to-digital conversion circuit is connected to the output end of the trap circuit, and the output end of the analog-to-digital conversion circuit is connected to the input end of the main control module.

9. The vital signs monitoring device according to claim 8, characterized in that: The trap circuit includes: a parallel resonant trap branch, a first operational amplifier and a second operational amplifier, the first input end of the parallel resonant trap branch is connected to the output end of the post-amplification circuit, the output end of the parallel resonant trap branch is connected to the non-inverting input end of the first operational amplifier, the output end of the first operational amplifier is connected to the input end of the analog-to-digital conversion circuit, the output end of the first operational amplifier is connected to the inverting input end of the first operational amplifier, the output end of the first operational amplifier is connected to the non-inverting input end of the second operational amplifier, the output end of the second operational amplifier is connected to the second input end of the parallel resonant trap branch, and the output end of the second operational amplifier is connected to the inverting input end of the second operational amplifier.

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