Electrocardio recorder, electrocardio host and electrocardio sensor

Abstract

The invention provides an electrocardio recorder, an electrocardio host and electrocardio sensors, the electrocardio recorder comprises the electrocardio host and a target electrocardio sensor electrically connected with the electrocardio host, and first resistors with different resistance values are arranged in the electrocardio sensors with different lead modes. The electrocardio host can be electrically connected with the electrocardio sensors in various lead modes. A divider resistance network and an analog front-end module are arranged in the electrocardio host, and when the electrocardio host is electrically connected with a target electrocardio sensor in any lead mode, the divider resistance network and a first resistor arranged in the target electrocardio sensor form a detection circuit. The electrocardio host determines a target lead mode of the target electrocardio sensor according to the voltage value output by the detection circuit, and adjusts the analog front-end module to a target working mode matched with the target lead mode.

Description

Technical Field

[0001] This specification relates to the field of medical device technology, and in particular to an electrocardiograph, an electrocardiograph host, and an electrocardiograph sensor. Background Art

[0002] An ECG recorder is a medical device used to record human ECG signals. It converts the ECG analog signals on the human body surface into ECG digital signals through analog-to-digital conversion technology and records them inside the device. An ECG recorder can be divided into two components: an ECG sensor and an ECG host. The ECG sensor is used to collect weak electrical activity signals on the surface of the human skin and input the electrical activity signals in the human body into the ECG host. The ECG host collects, stores, analyzes and / or displays the ECG on the display screen. In electrocardiography, the lead mode is a mode for recording electrical activity signals in different directions of the heart based on the arrangement and connection of different electrodes. The lead mode can be divided into twelve-lead, eight-lead, nine-lead and single-lead modes. Each lead is a voltage measurement path formed by a specific set of electrode combinations, representing the projection of the heart's electrical activity in a specific direction.

[0003] Currently, home / medical ECG recorders sold on the market generally only support one lead mode. ECG recorders with different lead modes need to be selected for different symptoms. ECG recorders with different lead modes need to be purchased separately. For patients with chronic heart disease, frequent replacement or purchase of equipment may increase the purchase cost. Summary of the invention

[0004] In order to overcome the problems existing in the related art, this specification provides an adaptive multi-modal dynamic electrocardiograph recorder, including an electrocardiograph host and an electrocardiograph sensor.

[0005] According to a first aspect of an embodiment of the present specification, an electrocardiograph is provided, the electrocardiograph comprising an electrocardiograph host and a target electrocardiograph sensor electrically connected thereto, the electrocardiograph sensors of different lead modes are internally provided with first resistors of different resistance values, the electrocardiograph host can be electrically connected to the electrocardiograph sensors of multiple lead modes, wherein:

[0006] A voltage-divider resistor network and an analog front-end module are provided inside the ECG host. When the ECG host forms an electrical connection with a target ECG sensor of any lead mode, the voltage-divider resistor network and a first resistor provided in the target ECG sensor form a detection circuit. The ECG host determines the target lead mode of the target ECG sensor according to the voltage value output by the detection circuit, and adjusts the analog front-end module to a target operating mode matching the target lead mode; wherein different resistance values ​​of the first resistor correspond to different voltage values ​​output by the detection circuit.

[0007] According to a second aspect of the embodiments of this specification, an ECG host is provided, wherein the ECG host is the ECG host in the ECG recorder as described in the first aspect.

[0008] According to a second aspect of an embodiment of this specification, an electrocardiogram sensor is provided. The electrocardiogram sensor is a target electrocardiogram sensor in the electrocardiogram recorder as described in the first aspect.

[0009] The technical solutions provided by the embodiments of this specification may have the following beneficial effects:

[0010] In this solution, the ECG sensors of different lead modes are provided with first resistors of different resistance values, which are used to identify the lead mode type of the ECG sensor. The analog front-end module of the ECG host supports multiple lead mode working modes. When the ECG sensor of any target lead mode is electrically connected to the ECG host, the voltage-dividing resistor network of the ECG host and the first resistor provided in the target ECG sensor form a detection circuit. The ECG host can determine the target lead mode of the target ECG sensor according to the voltage value output by the detection circuit, and adjust the analog front-end module to match the target working mode of the target lead mode. It can be seen that the ECG host of this solution can be compatible with multiple lead modes, and can automatically adapt the lead mode of the ECG sensor according to the resistance value of the identified ECG sensor. It is not necessary to design the hardware structure of the ECG recorder separately for each lead mode. The user only needs to purchase one ECG host, and can form an ECG recorder that supports different lead modes with the ECG host by replacing the ECG sensors of different lead modes, thereby reducing the user's purchase cost.

[0011] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0013] Figure 1 It is a schematic diagram of an electrocardiogram recorder shown in this specification according to an exemplary embodiment.

[0014] Figure 2 It is a schematic diagram of another electrocardiograph according to an exemplary embodiment of the present specification.

[0015] Figure 3 This is a schematic diagram of an electrocardiograph communicating with the cloud according to an exemplary embodiment of the present specification.

[0016] Figure 4It is a schematic diagram of another electrocardiograph according to an exemplary embodiment of the present specification. DETAILED DESCRIPTION

[0017] An ECG recorder is a medical device used to record human ECG signals. It collects the electrical activity of the heart through electrodes and records these signals as an ECG. An ECG recorder can be divided into two components: an ECG sensor and an ECG host. The ECG sensor is used to collect weak electrical activity signals on the surface of human skin, and convert the electrical activity signals in the human body into transmittable ECG signals and input them into the ECG host. The ECG host analyzes, stores and / or displays the ECG on the display screen. In electrocardiography, the lead mode is a mode for recording the electrical activity signals of the heart according to the arrangement and connection of different electrodes. The lead mode may include but is not limited to different modes such as twelve leads, eight leads, nine leads and single lead. Each lead is a voltage measurement path formed by a specific set of electrode combinations, representing the projection of the heart's electrical activity in a specific direction. Different heart abnormalities can be detected through different lead modes.

[0018] Currently, home ECG recorders sold on the market generally only support one lead mode. ECG recorders with different lead modes need to be selected for different symptoms. ECG recorders with different lead modes need to be purchased separately. For patients with chronic heart disease, frequent replacement or purchase of equipment may increase the purchase cost.

[0019] In view of the above technical problems, this specification proposes an ECG recorder, which can form an ECG recorder supporting multiple lead modes by using an ECG host supporting multiple lead modes to adapt to ECG sensors of different lead modes respectively. For details, please refer to the following embodiments:

[0020] The ECG sensor includes electrodes and lead wires. The electrodes are used to attach to the surface of human skin to detect the physiological electrical signals of the human body, and the lead wires are used to transmit the electrical signals to the ECG host. Different lead modes require different numbers of electrodes and are attached to different positions on the human body. Taking the ECG sensor in the twelve-lead mode as an example, the ECG sensor requires 10 electrodes, including 4 electrodes for limbs and 6 electrodes for the chest, and 12 signal acquisition channels are required to collect ECG signals. Taking the ECG sensor in the single-lead mode as an example, the ECG sensor requires 3 electrodes. Different ECG sensors contain a specific number of electrode points to support ECG signal transmission in different lead modes. The hardware structure of different ECG sensors supports acquisition methods of different lead modes.

[0021] The ECG sensor may be provided with a sensor signal interface, and the ECG host may be provided with a host signal interface, and an electrical connection may be formed between the ECG sensor and the ECG host via the sensor signal interface and the host signal interface. For example, the plug of the sensor signal interface of the ECG sensor may be inserted into the slot of the host signal interface of the ECG host. When the ECG host and the ECG sensor are electrically connected, the ECG sensor may transmit the collected ECG signal to the ECG host. In this solution, ECG sensors with different lead modes may be connected to the same ECG host via a standardized sensor signal interface, wherein the hardware structure of the host signal interface of the ECG host may be adapted to the sensor signal interface of the ECG sensors with different lead modes.

[0022] In one embodiment, if Figure 1 As shown, Figure 1 It is a schematic diagram of an ECG recorder shown in this specification according to an exemplary embodiment. The ECG recorder 1 includes an ECG host 12 and a target ECG sensor 11 electrically connected thereto. A voltage-dividing resistor network 121 and an analog front-end module 122 are provided inside the ECG host 12, and the analog front-end module 122 can support multiple lead modes. ECG sensors of different lead modes are provided with first resistors of different resistance values ​​inside. When the ECG host 12 is electrically connected to the target ECG sensor 11 of any lead mode, the voltage-dividing resistor network 121 and the first resistor 111 provided in the target ECG sensor 11 form a detection circuit 123. The ECG host 12 determines the target lead mode of the target ECG sensor 11 according to the voltage value output by the detection circuit 123, and adjusts the analog front-end module 122 to a target working mode matching the target lead mode. Among them, when the ECG host 12 forms an electrical connection with ECG sensors of different lead modes, the voltage value output by the detection circuit 123 is different, and the magnitude of the voltage value output by the detection circuit 123 corresponds to the resistance value of the first resistor, so that the lead mode indicated by the resistance value of the ECG sensor can be determined according to the voltage value output by the detection circuit 123.

[0023] In this embodiment, the ECG host can automatically identify the target lead mode of the target ECG sensor electrically connected to it according to the resistance value of the target ECG sensor, and perform signal acquisition according to the identified target lead mode, thereby achieving the purpose of supporting multiple lead modes in one device. In addition, the automatic identification method does not require the user to manually configure the lead mode for the ECG host according to the type of the connected target ECG sensor, which is more user-friendly and avoids the problem of user configuration errors.

[0024] In one embodiment, in addition to the sensing signal interface for transmitting ECG signals to the ECG host, the ECG sensor may be provided with a first detection interface, and the first detection interface is connected to a first resistor provided in the ECG sensor. At the same time, in addition to the host signal interface for receiving ECG signals, the ECG host may be provided with a second detection interface for the ECG host interface, and the second detection interface is connected to a voltage-dividing resistor network. The voltage-dividing resistor network is connected to the first resistor provided in the target ECG sensor through the first detection interface and the second detection interface to form a detection circuit.

[0025] In another embodiment, the first detection interface of the ECG sensor can reuse the sensor signal interface on the ECG sensor, and the sensor signal interface is connected to the first resistor set in the ECG sensor. The second detection interface of the ECG host can reuse the host signal interface on the ECG host, and the host signal interface is connected to the voltage-dividing resistor network. When the target ECG sensor is electrically connected to the ECG host, the voltage-dividing resistor network is connected to the first resistor set in the target ECG sensor through the host signal interface and the sensor signal interface to form a detection circuit. In this embodiment, the two tasks of lead pattern recognition and ECG signal transmission can be completed through a pair of signal interfaces, which simplifies the number of interfaces of the device and facilitates the design of smaller ECG sensors and ECG hosts. In addition, the method of setting a detection interface separately for lead pattern recognition only supports a limited number of lead modes, while this embodiment can cover all lead modes without increasing the number of probes.

[0026] In one embodiment, in order to achieve the purpose of completing the two tasks of lead pattern recognition and ECG signal transmission through a pair of signal interfaces. Figure 2 As shown, a switch 124 is provided on the ECG host 12, one end of the switch 124 is connected to the host signal interface, and the other end is selectively connected to the voltage-dividing resistor network 121 or the analog front-end module 122. When the switch 124 is closed to connect to the voltage-dividing resistor network 121, the voltage-dividing resistor network 121 and the first resistor provided in the target ECG sensor 11 are connected to the sensor signal interface through the host signal interface to form a detection circuit. When the switch 124 is closed to connect to the analog front-end module 122, the analog front-end module 122 can receive the ECG signal input by the host signal interface.

[0027] The ECG host 12 can control the closing direction of the switching switch 124. When the sensing signal interface of the target ECG sensor 11 is connected to the host signal interface of the ECG host 12, the switching switch 124 can be controlled to close to the connection state with the voltage-dividing resistor network 121; after identifying the lead mode of the target ECG sensor 11, the switching switch 124 can be controlled to close to the connection state with the analog front-end module 122.

[0028] In one embodiment, if Figure 2 As shown, the voltage-dividing resistor network 121 may include a power supply 1211 and a second resistor 1212, the second resistor 1212 is grounded, and when the ECG host 12 is electrically connected to the target ECG sensor 11, the power supply 1211, the second resistor 1212 and the first resistor 111 are connected in series to form a detection circuit. When the resistance value of the first resistor 111 is different, the voltage value output by the detection circuit will also be different accordingly. Therefore, by setting first resistors with different resistance values ​​for ECG sensors with different lead modes, different resistance values ​​are used to identify different types of lead modes, and the ECG host 12 can determine the lead mode corresponding to the voltage value according to the voltage value output by the detection circuit.

[0029] In one embodiment, if Figure 2 As shown, the ECG host 12 may be provided with an analog-to-digital conversion module 21 connected to the detection circuit, and the analog-to-digital conversion module 21 may convert the voltage signal output by the detection circuit into a digital signal, and the ECG host 12 determines the target lead mode of the target ECG sensor 11 according to the digital signal. Specifically, the analog-to-digital conversion module 21 may be an embedded analog-to-digital conversion module in the processor in the ECG host 12, or may be an independent analog-to-digital conversion module, and then the conversion result is sent to the processor, and this specification does not impose any limitation on this.

[0030] In one embodiment, the analog-to-digital conversion channel in the analog front-end module is adapted to an ECG sensor of at least two lead modes. After determining the target lead mode of the target ECG sensor, the target number of analog-to-digital conversion channels in the analog front-end module can be turned on or off to match the target working mode of the target lead mode. The analog-to-digital conversion channel corresponding to the lead mode with the largest number of leads can be set in the analog front-end module, and the analog-to-digital conversion channel can be backward compatible with the lead mode with a smaller number of leads. For example, assuming that 10 analog-to-digital conversion channels are set in the analog front-end module, when all the 10 analog-to-digital conversion channels are turned on, it is adapted to the twelve-lead mode. For another example, when 8 of the 10 analog-to-digital conversion channels are turned on, it is adapted to the ten-lead mode.

[0031] In one embodiment, the host signal interface of the ECG host can be adapted to ECG sensors of at least two lead modes. For example, the host signal interface of the ECG host is provided with 10 pins, which can be adapted to a sensor signal interface of 10 electrode contacts or a sensor signal interface of 8 electrode contacts. When the ECG host is electrically connected to the target ECG sensor, the host signal interface of the ECG host is adaptively connected to the sensor signal interface of the target ECG sensor.

[0032] In one embodiment, if Figure 3As shown, the ECG host 12 can be provided with a Bluetooth transmission module 31, and the ECG host 12 can transmit the collected ECG data to the Bluetooth gateway 32 through the Bluetooth transmission module 31, and forward it to the server 33 through the Bluetooth gateway 32. The patient can use the ECG recorder at home and upload the ECG data to the hospital's server 33 in real time through the Bluetooth gateway, so that the doctor can monitor and check the patient's physical condition at any time.

[0033] In one embodiment, if Figure 4 As shown, the first resistor 111 provided inside the target ECG sensor 11 can be connected to the electrode contacts 112 at any two positions on the sensing signal interface. When the target ECG sensor 11 is electrically connected to the ECG host 12, the sensing signal interface of the target ECG sensor 11 is adaptively connected to the host signal interface of the ECG host. The two ends of the switching switch 124 are respectively connected to the two pins of the host signal interface, and the two pins of the host signal interface are connected to the two electrode contacts connected to the first resistor 11. When the ECG host 12 is started, the switching switch can be closed to connect to the voltage-dividing resistor network 121. At this time, the first resistor and the voltage-dividing resistor network 121 form a detection circuit, and the analog-to-digital conversion module 21 in the processor 41 converts the analog voltage signal output by the detection circuit into a digital signal. The processor 41 determines the target lead mode of the target ECG sensor 11 based on the digital signal, and adjusts the number of analog-to-digital conversion channels in the analog front end 122 to adapt to the target lead mode. After identifying the lead mode, the processor 41 can control the switch to close and connect to the analog front-end module 122. At this time, the analog front-end module 122 can collect the ECG signal sent from the target ECG sensor 11 through the host signal interface.

[0034] In one embodiment, the present specification provides an ECG sensor, wherein a first resistor of different resistance values ​​is provided inside the ECG sensor, and the different resistance values ​​are used to identify different lead modes. When the target ECG sensor is electrically connected to the ECG host, the first resistor provided inside the target ECG sensor and the voltage-dividing resistor network of the ECG host form a detection circuit, so that the ECG host can determine the target lead mode of the target ECG sensor according to the voltage value output by the detection circuit, and adjust the analog front-end module of the ECG host to a target working mode matching the target lead mode. Among them, when the ECG sensor is electrically connected to the ECG host, the ECG sensor is the target ECG sensor.

[0035] In one embodiment, the specification provides an ECG host, in which a voltage-dividing resistor network and an analog front-end module are arranged. When the ECG host forms an electrical connection with a target ECG sensor of any lead mode, the voltage-dividing resistor network and a first resistor arranged in the target ECG sensor form a detection circuit. The ECG host determines the target lead mode of the target ECG sensor according to the voltage value output by the detection circuit, and adjusts the analog front-end module to a target working mode matching the target lead mode. Different resistance values ​​of the first resistor correspond to different voltage values ​​output by the detection circuit.

Claims

1. An electrocardiogram recorder, characterized in that: The ECG recorder includes an ECG host and a target ECG sensor electrically connected thereto, wherein first resistors with different resistances are arranged inside the ECG sensors of different lead modes, and the ECG host can be electrically connected to ECG sensors of multiple lead modes, wherein: A voltage-divider resistor network and an analog front-end module are provided inside the ECG host. When the ECG host forms an electrical connection with a target ECG sensor of any lead mode, the voltage-divider resistor network and a first resistor provided in the target ECG sensor form a detection circuit. The ECG host determines the target lead mode of the target ECG sensor according to the voltage value output by the detection circuit, and adjusts the analog front-end module to a target operating mode matching the target lead mode; wherein different resistance values ​​of the first resistor correspond to different voltage values ​​output by the detection circuit.

2. The electrocardiogram recorder according to claim 1, characterized in that: The voltage-dividing resistor network and the first resistor provided in the target electrocardiogram sensor form a detection circuit, including: The target ECG sensor is provided with a first detection interface, the first detection interface is connected to the first resistor, the ECG host is provided with a second detection interface, the second detection interface is connected to the voltage-dividing resistor network, the voltage-dividing resistor network and the first resistor provided in the target ECG sensor are connected to the second detection interface through the first detection interface to form a detection circuit; or The target ECG sensor is provided with a sensing signal interface, and the sensing signal interface is connected to the resistor. The ECG host is provided with a host signal interface, and the host signal interface is connected to the voltage-dividing resistor network. The voltage-dividing resistor network and the first resistor provided in the target ECG sensor are connected to the sensing signal interface through the host signal interface to form a detection circuit.

3. The electrocardiograph according to claim 2, characterized in that: The voltage-dividing resistor network and the first resistor provided in the target electrocardiogram sensor are connected to the sensor signal interface through the host signal interface to form a detection circuit, including: The ECG host is provided with a switching switch, one end of which is connected to the host signal interface, and the other end is selectively connected to the voltage-dividing resistor network or the analog front-end module. When the switching switch is closed to connect to the voltage-dividing resistor network, the voltage-dividing resistor network and the first resistor set in the target ECG sensor are connected to the sensor signal interface through the host signal interface to form a detection circuit.

4. The electrocardiogram recorder according to claim 3, characterized in that: When the switch is closed to connect with the analog front-end module, the analog front-end module receives the electrocardiogram signal input by the host signal interface.

5. The electrocardiograph according to claim 1, characterized in that: The voltage-dividing resistor network includes a power supply and a second resistor, the second resistor is grounded, and the voltage-dividing resistor network and a first resistor provided in the target electrocardiogram sensor form a detection circuit, including: The power supply, the second resistor and the first resistor are connected in series to form the detection circuit.

6. The electrocardiograph according to claim 1, characterized in that: The ECG host determines the target lead mode of the target ECG sensor according to the voltage value output by the detection circuit, including: The ECG host is provided with an analog-to-digital conversion module connected to the detection circuit, the analog-to-digital conversion module converts the voltage signal output by the detection circuit into a digital signal, and the ECG host determines the target lead mode of the target ECG sensor according to the digital signal.

7. The electrocardiograph according to claim 1, characterized in that: The ECG host is provided with a Bluetooth transmission module, and the Bluetooth transmission module is used to transmit the ECG data to a Bluetooth gateway, and forward the ECG data to a server through the Bluetooth gateway.

8. The electrocardiograph according to claim 1, characterized in that: The analog-to-digital conversion channel in the analog front-end module is adapted to an electrocardiographic sensor of at least two lead modes, and the adjusting the analog front-end module to a target operating mode matching the target lead mode includes: A target number of analog-to-digital conversion channels in the analog front-end module are turned on or off to match a target operating mode of the target lead mode.

9. An electrocardiogram host, characterized in that: The ECG host is the ECG host in the ECG recorder according to any one of claims 1-8.

10. An electrocardiogram sensor, characterized in that: The electrocardiogram sensor is a target electrocardiogram sensor in an electrocardiogram recorder according to any one of claims 1 to 8.

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