CN210277150U - Blood flow and blood pressure detection device - Google Patents
Blood flow and blood pressure detection device Download PDFInfo
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- CN210277150U CN210277150U CN201920465383.8U CN201920465383U CN210277150U CN 210277150 U CN210277150 U CN 210277150U CN 201920465383 U CN201920465383 U CN 201920465383U CN 210277150 U CN210277150 U CN 210277150U
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Abstract
The utility model discloses a blood flow and blood pressure detection device, which is characterized in that an ultrasonic blood flow detection module is arranged for transmitting a first ultrasonic detection analog signal and outputting an ultrasonic detection digital signal to a main control module after receiving and processing a second ultrasonic detection analog signal, the main control module acquires blood flow data according to the received ultrasonic detection digital signal, and the blood pressure detection module is arranged for acquiring blood pressure data and outputting the blood pressure data to the main control module; the technical problems that in the prior art, when blood flow detection is carried out, special blood flow detection equipment is adopted for detection, and when blood pressure detection is carried out, special blood pressure detection equipment is adopted for detection, so that when the blood flow and blood pressure detection is carried out on the same person to be detected, the detection equipment needs to be replaced or the detection place needs to be transferred for detection, the detection efficiency is low, the equipment cost is high, and the equipment function is single are solved; the blood flow and blood pressure detection device has the advantages of multiple functions, low comprehensive cost and high detection efficiency.
Description
Technical Field
The utility model belongs to the technical field of medical health check out test set technique and specifically relates to a blood flow blood pressure check device is related to.
Background
With the continuous development of science and technology, various medical health detection devices are developed and produced, great convenience is provided for the work and the detection of health conditions of people, and blood flow detection and blood pressure detection are used as important indexes for disease diagnosis and physical health, so that the detection of blood flow and blood pressure is needed when people carry out disease treatment or physical detection.
In the prior art, when blood flow detection is carried out, people adopt special blood flow detection equipment to carry out detection work, and when blood pressure detection is carried out, people adopt special blood pressure detection equipment to carry out detection work, so that when blood flow and blood pressure detection are carried out on the same person to be detected, detection equipment needs to be replaced or a detection place needs to be transferred to detect, and the technical problems of low detection efficiency, high equipment cost and single equipment function are caused.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model aims at providing a blood flow blood pressure detection device that is multi-functional, low in comprehensive cost, detection efficiency are high.
The utility model adopts the technical proposal that:
in a first aspect, the present invention provides a blood flow and blood pressure detecting device, which includes:
the ultrasonic blood flow detection module is used for transmitting a first ultrasonic detection analog signal, receiving a second ultrasonic detection analog signal formed by reflecting the first ultrasonic detection analog signal after blood treatment and outputting an ultrasonic detection digital signal;
the blood pressure detection module is used for acquiring and outputting blood pressure data;
and the main control module is used for receiving and processing the ultrasonic detection digital signals to acquire blood flow data and receiving the blood pressure data.
Further, the ultrasonic blood flow detection module comprises:
the ultrasonic detection module is used for transmitting the first ultrasonic detection analog signal and receiving the second ultrasonic detection analog signal formed by reflecting the first ultrasonic detection analog signal after blood passes through;
the blood flow signal shunting module is used for respectively shunting and outputting the second ultrasonic detection analog signals received by the ultrasonic detection module by using 2 paths of demodulation signals;
a blood flow direction processing module; and the ultrasonic detection digital signal is output after the ultrasonic detection analog signal which is output by the blood flow signal branching module in a branching way is processed.
Further, the ultrasonic detection module comprises an ultrasonic probe, wherein the ultrasonic probe comprises an ultrasonic wave generation circuit, an ultrasonic wave receiving resonance circuit and an ultrasonic wave transmitting circuit; the output end of the ultrasonic receiving resonance circuit is connected with the input end of the blood flow signal branching module, and the output end of the ultrasonic generating circuit is respectively connected with the input end of the ultrasonic transmitting circuit and the input end of the blood flow signal branching module.
Further, the blood flow signal shunting module comprises a first frequency dividing circuit and a second frequency dividing circuit; the first output of ultrasonic wave generating circuit with first frequency divider's first input is connected, ultrasonic wave receiving resonance circuit's output with first frequency divider's second input is connected, first frequency divider's output with blood flow direction is connected to processing module's first input, ultrasonic wave generating circuit's second output with second frequency divider's first input is connected, ultrasonic wave receiving resonance circuit's output with second frequency divider's second input is connected, second frequency divider's output with blood flow direction is connected to processing module's second input.
Further, the blood flow direction processing module comprises a first blood flow direction processing submodule and a second blood flow direction processing submodule; the first blood flow direction processing sub-module comprises a first filtering amplification circuit and a first analog-to-digital conversion circuit, the output end of the first frequency division circuit is connected with the input end of the first filtering amplification circuit, the output end of the first filtering amplification circuit is connected with the input end of the first analog-to-digital conversion circuit, and the output end of the first analog-to-digital conversion circuit is connected with the input end of the main control module; the second blood flow direction processing sub-module comprises a second filtering amplification circuit and a second analog-to-digital conversion circuit, the output end of the second frequency dividing circuit is connected with the input end of the second filtering amplification circuit, the output end of the second filtering amplification circuit is connected with the input end of the second analog-to-digital conversion circuit, and the output end of the second analog-to-digital conversion circuit is connected with the input end of the main control module.
Further, the blood pressure detection module comprises:
the inflation module is used for controlling the blood flow and blood pressure detection device to inflate during blood pressure detection;
the deflation module is used for controlling the blood flow and blood pressure detection device to deflate during blood pressure detection;
the blood pressure data acquisition module is used for acquiring the blood pressure data;
the input end of the inflation module and the input end of the deflation module are connected with the output end of the main control module, and the output end of the blood pressure data acquisition module is connected with the input end of the main control module.
Furthermore, the inflation module comprises an inflator pump and an inflation control circuit, the inflation control circuit is respectively connected with the inflator pump and the main control module, and the inflation control circuit is controlled by the main control module to control the inflator pump to inflate.
Further, the air bleeding module comprises a fast air bleeding module and a slow air bleeding module; the output end of the main control module is connected with the input end of the quick deflation module so as to control the blood flow and blood pressure detection device to perform quick deflation; the output end of the main control module is connected with the input end of the slow deflation module so as to control the blood flow and blood pressure detection device to perform slow deflation.
Further, the quick air release module comprises a quick air release control circuit and a first air release valve; a first output end of the quick deflation control circuit is connected with a first end of the first deflation valve, and a second output end of the quick deflation control circuit is connected with a second end of the first deflation valve; the quick deflation control circuit comprises a quick deflation control input end and an overvoltage protection deflation control end, and the output end of the main control module is respectively connected with the quick deflation control input end and the overvoltage protection deflation control end; the slow deflation module comprises a slow deflation control circuit and a second deflation valve; the output end of the main control module is connected with the input end of the slow deflation control circuit, the first output end of the slow deflation control circuit is connected with the first end of the second deflation valve, and the second output end of the slow deflation control circuit is connected with the second end of the second deflation valve.
Furthermore, the blood pressure data acquisition module comprises a pressure sensor and a blood pressure data acquisition circuit, the output end of the pressure sensor is connected with the input end of the blood pressure acquisition circuit, and the output end of the blood pressure data acquisition circuit is connected with the input end of the main control module.
Furthermore, the blood flow and blood pressure detection device further comprises a pulse data acquisition circuit, the output end of the pressure sensor is connected with the input end of the pulse data acquisition circuit, and the output end of the pulse data acquisition circuit is connected with the input end of the main control module.
The utility model has the advantages that:
the utility model relates to a blood flow and blood pressure detection device, which is provided with an ultrasonic blood flow detection module for transmitting a first ultrasonic detection analog signal, receiving and processing a second ultrasonic detection analog signal and then outputting an ultrasonic detection digital signal to a main control module, wherein the main control module acquires blood flow data according to the received ultrasonic detection digital signal, and the blood pressure detection module is arranged for acquiring blood pressure data and outputting the blood pressure data to the main control module; the technical problems that in the prior art, when blood flow detection is carried out, special blood flow detection equipment is adopted for detection, and when blood pressure detection is carried out, special blood pressure detection equipment is adopted for detection, so that when the blood flow and blood pressure detection is carried out on the same person to be detected, the detection equipment needs to be replaced or the detection place needs to be transferred for detection, the detection efficiency is low, the equipment cost is high, and the equipment function is single are solved; the blood flow and blood pressure detection device has the advantages of multiple functions, low comprehensive cost and high detection efficiency.
Drawings
Fig. 1 is a block diagram of a blood pressure monitor according to an embodiment of the present invention;
FIG. 2 is a block diagram of an embodiment of the ultrasound blood flow detection module of the present invention;
FIG. 3 is a circuit diagram of an embodiment of the ultrasonic wave generating circuit of the present invention;
fig. 4 is a circuit diagram of an embodiment of the ultrasonic transmitter circuit of the present invention;
fig. 5 is a circuit diagram of an embodiment of the resonant circuit for ultrasonic wave reception according to the present invention;
fig. 6 is a circuit diagram of an embodiment of a first frequency divider circuit of the present invention;
FIG. 7 is a circuit diagram of an embodiment of a second frequency divider circuit of the present invention;
fig. 8 is a circuit diagram of an embodiment of the first filter amplifier circuit and the second filter amplifier circuit of the present invention;
fig. 9 is a circuit diagram of an embodiment of a first analog-to-digital conversion circuit of the present invention;
fig. 10 is a circuit diagram of an embodiment of a second analog-to-digital conversion circuit according to the present invention;
fig. 11 is a circuit diagram of an embodiment of the main control module of the present invention;
FIG. 12 is a block diagram of a blood pressure monitor module according to the present invention;
FIG. 13 is a circuit diagram of an embodiment of the blood pressure data acquisition circuit of the present invention;
FIG. 14 is a circuit diagram of an embodiment of a middle pulse data acquisition circuit of the present invention;
FIG. 15 is a circuit diagram of an embodiment of the inflation control circuit of the present invention;
FIG. 16 is a circuit diagram of an embodiment of the mid-fast deflation control circuit of the present invention;
fig. 17 is a circuit diagram of an embodiment of the middle and slow bleed control circuit of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
As shown in fig. 1, the blood flow and blood pressure detecting device of the present invention comprises an ultrasonic blood flow detecting module, a blood pressure detecting module and a main control module; wherein, the output end of the ultrasonic blood flow detection module and the output end of the blood pressure detection module are both connected with the input end of the main control module, the ultrasonic blood flow detection module is used for transmitting a first ultrasonic detection analog signal and outputting an ultrasonic detection digital signal to the main control module after receiving and processing a second ultrasonic detection analog signal formed by reflecting the first ultrasonic detection analog signal after blood, the blood pressure detection module is used for acquiring blood pressure data and transmitting the blood pressure data to the main control module, the main control module acquires the blood flow data according to the received ultrasonic detection digital signal, thereby solving the problem that the special blood flow detection equipment is adopted for detection when the blood flow detection is carried out in the prior art, the special blood pressure detection equipment is adopted for detection when the blood pressure detection is carried out, which results in the blood flow and blood pressure detection of the same person to be detected, the technical problems of low detection efficiency, high equipment cost and single equipment function are caused by the need of replacing detection equipment or transferring a detection place for detection.
Specifically, each functional module is explained in detail as follows:
1. ultrasonic blood flow detection module
As shown in fig. 2, the ultrasonic blood flow detection module includes an ultrasonic detection module, a blood flow signal splitting module and a blood flow direction processing module; the blood flow direction processing module receives the received second ultrasonic detection analog signals respectively by 2 paths of demodulation signals and then inputs the received second ultrasonic detection analog signals to the blood flow direction processing module for signal processing, and the blood flow direction processing module processes the received second ultrasonic detection analog signals and outputs ultrasonic detection digital signals to the main control module.
In this embodiment, the ultrasound detection module is an ultrasound probe, and includes an ultrasound generating circuit, an ultrasound receiving resonant circuit, and an ultrasound transmitting circuit, and the blood flow signal branching module includes a first frequency dividing circuit and a second frequency dividing circuit. Specifically, referring to fig. 3, the ultrasonic wave generating circuit includes an 8MHz passive crystal oscillator Y1, ninth to twelfth resistors R9 to R12, a fifth inductor L5, an eleventh capacitor R11, a twelfth capacitor C12, a first inverter U1, and a second inverter U2; wherein the twelfth resistor R12 is a sliding rheostat, the X1 end of the 8MHz passive crystal oscillator Y1 is connected to one end of the ninth resistor R9, one end of the twelfth capacitor C12 and the input end of the first inverter U1, the X2 end of the 8MHz passive crystal oscillator Y1 is connected to the output end of the first inverter U1, the input end of the second inverter U2, the other end of the ninth resistor R9 and one end of the eleventh capacitor C11, the other end of the eleventh capacitor C11 is connected to the other end of the twelfth capacitor C12 and then is grounded, the output end of the second inverter U2 is the first output end of the ultrasonic wave generating circuit, the output end of the second inverter U2 is connected to the input end of the ultrasonic wave transmitting circuit, the first input end of the first frequency dividing circuit and one end of the tenth resistor R10, the other end of the tenth resistor R84 is connected to one end of the fifth inductor L5, and the other end of the fifth inductor L5 (i.e. the second output end of the ultrasonic wave generating circuit) is connected to one end of the eleventh resistor R11, A first fixed end of the twelfth resistor R12 is connected, the other end of the eleventh resistor R11 is connected with an external 2V power supply, and a sliding end of the twelfth resistor R12 and a second fixed end of the twentieth resistor R12 are connected and then are grounded; the 8MHZ signal output by the first output end of the ultrasonic circuit and the 8.1MHZ signal output by the second output end are only the signal phase of the second output end lags behind the signal phase of the first output end by 90 degrees in practice, the amplitude frequency of the signals of the two output ends are consistent in practice, the 8.1MHZ marks for distinguishing the difference of the phases of the signals of the two output ends, and 2 paths of demodulation signals with the phase difference of 90 degrees are used for receiving the signals by the first frequency dividing circuit and the second frequency dividing circuit; meanwhile, the ultrasonic wave transmitting circuit is supplied to transmit an ultrasonic wave detection analog signal outwards. Referring to fig. 4, the ultrasonic wave transmitting circuit includes a ninth capacitor C9, a tenth capacitor C10, an eighth resistor R8, a fourth inductor L4, a fourth transistor Q4, and a transmitting ceramic wafer; the two ends of the transmitting ceramic wafer are respectively connected with interfaces of J1 and J2, one end of a ninth capacitor C9 (namely, the input end of the ultrasonic transmitting circuit) is connected with the output end of a second inverter U2, the other end of the ninth capacitor C9 is respectively connected with the base of a fourth triode Q4 and one end of an eighth resistor R8, the other end of the eighth resistor R8 is respectively connected with one end of a tenth capacitor C10 and one end of a fourth inductor L4 and then connected to an external 2V power supply, the other end of the tenth capacitor C10 is respectively connected with the collector of a fourth triode Q4, the other end of the fourth inductor L4 and a J1 interface, the emitter of the fourth triode Q4 is connected with the J2 interface in common, and transmits the first ultrasonic detection analog signal to the outside by receiving an 8MHz signal source generated by the ultrasonic generating circuit and then by the transmitting ceramic wafer. Referring to fig. 5, the ultrasonic wave receiving resonance circuit includes a receiving ceramic chip, a first resonance transformer T1, a first amplifying tube Q1, first to fourth capacitors C1 to C4, a first resistor R1, a first inductor L1, a first output terminal AS1, and a second output terminal AS 2; wherein, the first amplifying tube Q1 is a first triode Q1, two ends of the receiving ceramic wafer are respectively connected with the interfaces of J9A and J10A, a first input end of a first resonance transformer T1 is connected with the interface of J9A, a second input end of the first resonance transformer T1 is connected with the interface of J10A, a first output end of the first resonance transformer T1 is respectively connected with one end of a fourth capacitor C4 and the base of the first triode Q1, a second output end of the first resonance transformer T1 is respectively connected with the other end of the fourth capacitor C4 and the emitter of the first triode Q1 and then grounded, the collector of the first triode Q1 is respectively connected with one end of a first inductor L1, one end of a first resistor R5, one end of a first capacitor C1 and one end of a second capacitor C2, the other end of the first inductor L1 is respectively connected with the other end of the first resistor R1 and one end of a third capacitor C3 and then connected to the external power supply of the third capacitor C5732V 3, the other end of the first capacitor C1 is connected with the first output terminal AS1 and then connected to the blood flow signal branching module, the other end of the second capacitor C2 is connected with the second output terminal AS2 and then connected to the blood flow signal branching module, and the second ultrasonic detection analog signal received and fed back by the receiving ceramic chip is amplified by the first triode Q1 and then output to the blood flow signal branching module through the first output terminal AS1 and the second output terminal AS 2.
Referring to fig. 6, in the present embodiment, the first frequency-dividing circuit includes second to fourth resistors R2 to R4, a fifth capacitor C5, a sixth capacitor C6, a second inductor L2, and a second transistor Q2; wherein, one end of the fourth resistor R4 (i.e. the first input end of the first frequency-dividing circuit) is connected with the output end of the second inverter U2 in the ultrasonic wave generating circuit, the other end of the fourth resistor R4 is connected with one end of the sixth capacitor C6, the other end of the sixth capacitor C6 is respectively connected with one end of the third resistor R3 and the base of the second triode Q2, the emitter of the second triode Q2 (i.e. the second input end of the first frequency-dividing circuit) is respectively connected with one end of the second inductor L2 and the first output end AS1 of the ultrasonic wave receiving resonance circuit, the other end of the second inductor L2 is grounded, the other end of the third resistor R3 is respectively connected with the collector of the second triode Q2, one end of the second resistor R2, one end of the fifth capacitor C5 and the first input end of the blood flow direction processing module, the other end of the second resistor R2 is connected with the external 2V power supply, and the other end of the fifth capacitor C5 is, the signals transmitted by the 8MHz signal source generated by the ultrasonic wave generating circuit and the first output end AS1 of the ultrasonic wave receiving resonance circuit are received and then output to the blood flow direction processing module. Referring to fig. 7, the second frequency-dividing circuit includes fifth to seventh resistors R5 to R7, a seventh capacitor C7, an eighth capacitor C8, a third transistor Q3, a third inductor L3, and a third inverter U3; wherein, the input end of the third inverter U3 is connected with the output end of the second inverter U2 in the ultrasonic wave generating circuit, the output end of the third inverter U3 is connected with one end of the seventh resistor R7, the other end of the seventh resistor R7 is connected with one end of the eighth capacitor C8, the other end of the eighth capacitor C8 is connected with one end of the sixth resistor R6 and the base of the third triode Q3, the emitter of the third triode Q3 is connected with one end of the third inductor L3 and the second output end AS2 of the ultrasonic wave receiving resonance circuit, the other end of the third inductor L3 is grounded, the other end of the sixth resistor R6 is connected with the collector of the third triode Q3, one end of the fifth resistor R5, one end of the seventh capacitor C7 and the second input end of the blood flow direction processing module, the other end of the fifth resistor R5 is connected with the external 2V power supply, the other end of the seventh capacitor C7 is grounded, the 8MHz generated by the ultrasonic wave generating circuit is received, and the third inverter U3 is connected to the ultrasonic wave signal source and receives the ultrasonic The wave is received from the second output AS2 of the resonant circuit and then output to the blood flow processing module.
In this embodiment, the blood flow direction processing module includes a first blood flow direction processing submodule and a second blood flow direction processing submodule; the first blood flow direction processing submodule comprises a first filtering and amplifying circuit and a first analog-to-digital conversion circuit, the second blood flow direction processing submodule comprises a second filtering and amplifying circuit and a second analog-to-digital conversion circuit, the first filtering and amplifying circuit comprises a first low-pass filtering circuit, a first signal amplifying circuit and a first high-pass filtering circuit, and the second filtering and amplifying circuit comprises a second low-pass filtering circuit, a second signal amplifying circuit and a second high-pass filtering circuit. Specifically, referring to fig. 8, the first low-pass filter circuit includes: a thirteenth capacitor C13 to a seventeenth capacitor C17, a thirteenth resistor R13 to a sixteenth resistor R16, a fifth triode Q5, and a first filter switch chip U4; the first signal amplifying circuit includes: seventeenth to nineteenth resistors R17 to R19 and a first operational amplifier U5; the first high-pass filter circuit includes: an eighteenth capacitor C18, a nineteenth capacitor C19, twentieth to twenty-second resistors R20 to R22, and a second operational amplifier U6; the second low-pass filter circuit includes: a twentieth capacitor C20 to a twenty-fourth capacitor C24, a twenty-third resistor R23 to a twenty-fifth resistor R25 and a second filter switch chip U7; the second signal amplifying circuit includes: twenty-sixth to twenty-eighth resistors R26 to R28 and a third operational amplifier U8; the second high-pass filter circuit includes: a twentieth capacitor C25, a twenty-sixth capacitor C26, a twenty-ninth resistor R29 to a thirty-first resistor R31, and a fourth operational amplifier U9; the first filtering switch chip U4 and the second filtering switch chip U7 are TC4W66F chips, the first operational amplifier U5 to the fourth operational amplifier U9 are TL064 operational amplifiers, and the tenth resistor R10 and the twentieth resistor R20 are sliding varistors; one end of a thirteenth capacitor C13 (i.e. the input end of the first filtering and amplifying circuit) is connected to the output end SI1 of the first frequency-dividing circuit, and is configured to receive the second ultrasonic detection analog signal transmitted by the ultrasonic signal detection probe, the other end of the thirteenth capacitor C13 is connected to the first fixed end of a tenth resistor R10, the second fixed end of the tenth resistor R10 is grounded, the sliding end of the tenth resistor R10 is connected to one end of an eleventh resistor R11, one end of a fourteenth capacitor C14, and the input end of the first filtering and switching chip U4, the other end of the eleventh resistor R11 is grounded, the other end of the fourteenth capacitor C14 is connected to one end of a twelfth resistor R12 and one end of a fifteenth capacitor C15, the other end of a fifteenth capacitor C15 is connected to one end of a sixteenth capacitor C16, one end of a seventeenth capacitor C17, the input end of a first operational amplifier U n-phase amplifier U5, and one end of a fourteenth resistor R14, the other end of a sixteenth capacitor C16 is connected with the output end of a first filter switch chip U4, the other end of a fourteenth resistor R14 is grounded, the other end of a twelfth resistor R12 is respectively connected with the other end of a seventeenth capacitor C17, the inverting input end of a first operational amplifier U5, one end of a fifteenth resistor R15 and one end of a sixteenth resistor R16, the other end of a fifteenth resistor R15 is grounded, the other end of a sixteenth resistor R16 is respectively connected with the output end of a first operational amplifier U5 and one end of an eighteenth capacitor C18, the other end of an eighteenth capacitor C18 is respectively connected with one end of a seventeenth resistor R17 and the non-inverting input end of a second operational amplifier U6, the other end of a seventeenth resistor R17 is connected with one end of an eighteenth resistor R18 and then grounded, the other end of an eighteenth resistor R18 is respectively connected with the inverting input end of the second operational amplifier U6, one end of a nineteenth capacitor C19 and one end of a nineteen, the other end of the nineteenth resistor R19 is connected to the other end of the nineteenth capacitor C19 and the output end of the second operational amplifier U6, respectively. The enable end IN2 of the first filter switch chip is connected with one end of a thirteenth resistor R13 and an emitter of a fifth triode Q5 respectively, a base of the fifth triode Q5 is connected with the master control module, a collector of the fifth triode Q5 is connected with an external 5V power supply, the other end of the thirteenth resistor R13 is connected with an external-4.6V power supply, positive power supply input ends of a first operational amplifier U5 and a second operational amplifier U6 are both connected with the 5V power supply, and negative power supply input ends are both connected with the-4.6V power supply. The circuit structure of the second filtering and amplifying circuit is basically the same as that of the first filtering and amplifying circuit, as shown in fig. 8, but it should be noted that the enable end of the second filtering switch chip U7 may be connected to the enable end of the first filtering switch chip U4, and then connected to the main control module through the fifth triode Q5; by arranging the first filtering and amplifying circuit and the second filtering and amplifying circuit, signals transmitted by the first frequency dividing circuit and the second frequency dividing circuit are filtered and amplified and then output, and effectiveness and reliability of subsequent signal processing are guaranteed.
As shown in fig. 9 and fig. 10, in this embodiment, the first analog-to-digital conversion module and the second analog-to-digital conversion module are respectively configured to convert the 2 channels of ultrasonic detection analog signals output by the first filtering and amplifying circuit and the second filtering and amplifying circuit into ultrasonic detection digital signals and output the ultrasonic detection digital signals; specifically, referring to fig. 9, the first analog-to-digital conversion module includes a twenty-seventh capacitor C27, a twenty-eighth capacitor C28, thirty-second to thirty-eighth resistors R32 to R38, a first diode D1, a second diode D2, a first comparator U10, and a first analog-to-digital conversion chip U11; wherein, the first comparator U10 is an LM393 comparator, the first analog-to-digital conversion chip U11 is a 74HC74 chip, one end of the twenty-seventh capacitor C27 is connected to the output end (refer to fig. 7, that is, the output end U6 of the second operational amplifier) A1B of the first filter amplifying circuit, the other end of the twenty-seventh capacitor C27 is connected to one end of the thirty-second resistor R32 and one end of the thirty-third resistor R33, the other end of the thirty-second resistor R32 is grounded, the other end of the thirty-third resistor R33 is connected to the anode of the first diode D1, the cathode of the second diode D2 and the inverting input end of the first comparator U10, the cathode of the first diode D1 is connected to the anode of the second diode D2 and then grounded, one end of the thirty-fourth resistor R34 is connected to the external-4.6V power supply, and the thirty-fourth resistor R34 is connected to the external power supplyThe other end of the second adc chip U13 is connected to one end of a thirty-fifth resistor R35, one end of a twenty-eighth capacitor C28, one end of a thirty-sixth resistor R36, and the non-inverting input terminal of the first comparator U10, the other end of the thirty-fifth resistor R35 is grounded, the other end of the twenty-eighth capacitor C28 is connected to the other end of the thirty-sixth resistor R36, the output terminal of the first comparator U10, one end of a thirty-seventh resistor R37, one end of the thirty-eighth resistor R38, the data input terminal D (see fig. 10) of the second adc chip U13, and the reset terminal of the first adc chip U11
The other end of the thirty-seventh resistor R37 is connected with an external 5V power supply, the other end of the thirty-eighth resistor R38 is connected with a clock signal input end CLK of the first analog-to-digital conversion chip U11, and a Q output end of the first analog-to-digital conversion chip U11 is connected with the main control module; referring to fig. 10, the second analog-to-digital conversion module includes a twenty-ninth capacitor C29, a thirty-ninth capacitor C30, thirty-ninth to forty-sixth resistors R39 to R46, a third diode D3, a fourth diode D4, a second comparator U12, and a second analog-to-digital conversion chip U13; wherein, the second comparator U12 is an LM393 comparator, the second analog-to-digital conversion chip U13 is a 74HC74 chip, one end of the twenty-ninth capacitor C29 is connected to the output end (refer to fig. 8, that is, the output end of the fourth operational amplifier U9) A2B of the second filter amplifying circuit, the other end of the twenty-ninth capacitor C29 is connected to one end of the thirty-ninth resistor R39 and one end of the forty-ninth resistor R40, the other end of the thirty-ninth resistor R39 is grounded, the other end of the forty resistor R40 is connected to the anode of the third diode D3, the cathode of the fourth diode D4 and the inverting input end of the second comparator U12, the cathode of the third diode D3 is connected to the anode of the fourth diode D4 and then grounded, one end of the first forty resistor R41 is connected to the external-4.6V power supply, and the other ends of the forty resistor R41 are connected to one end of the forty R42 and the thirty-C30 of the second resistor R30, One end of a forty-third resistor R43 and the non-inverting input end of the second comparator U12 are connected, the other end of the forty-second resistor R42 is grounded, and the other end of a thirty-third capacitor C30 is respectively connected with the other end of the forty-third resistor R43 and the second comparatorAn output end of the U12, one end of a forty-fourth resistor R44, and one end of a forty-fifth resistor R45, the other end of the forty-fourth resistor R44 is connected to an external 5V power supply, and the other end of the forty-fifth resistor R45 is connected to a data input end D (refer to fig. 9) of the first analog-to-digital conversion chip U11, one end of a forty-sixth resistor R46, and a reset end of the second analog-to-digital conversion chip U13, respectively
And the other end of the forty-sixth resistor R46 is connected with a clock signal input end CLK of the second analog-to-digital conversion chip U13, and a Q output end of the second analog-to-digital conversion chip U13 is connected with the master control module. The positive power supply input ends of the first comparator U10 and the second comparator U12 are both connected with an external 5V power supply, and the negative power supply input ends are respectively grounded. The first analog-to-digital conversion module is arranged to perform waveform shaping and analog-to-digital conversion on the A2B ultrasonic detection analog signal output by the second filtering and amplifying circuit and output the signal to the main control module, and the second analog-to-digital conversion module performs waveform shaping and analog-to-digital conversion on the A1B ultrasonic detection analog signal output by the first filtering and amplifying circuit and outputs the signal to the main control module. As shown in fig. 11, the main control module U14 includes an STM32F103R8T6 chip, and the connection relationship of the pins thereof is as shown in the figure, and the detected blood flow data information can be acquired by receiving the backward blood flow signal transmitted from the first signal flow to the output sub-module and the forward blood flow signal transmitted from the second signal flow to the output sub-module.
2. Blood pressure detection module
As shown in fig. 12, the blood pressure detecting module in this embodiment includes an inflation module, a deflation module and a blood pressure data acquiring module; the input end of the inflation module and the input end of the deflation module are connected with the output end of the main control module, the output end of the blood pressure data acquisition module is connected with the input end of the main control module, the blood pressure data acquisition module comprises a pressure sensor and a blood pressure data acquisition circuit, when blood pressure detection is carried out, the main control module controls the inflation module to further control the blood flow blood pressure detection device to inflate, and similarly, the main control module also controls the deflation module to further control the blood flow blood pressure detection device to deflate. In addition, in this embodiment, still be provided with pulse data acquisition circuit, pressure sensor's output with pulse data acquisition circuit's input is connected, and pulse data acquisition circuit's output is connected with main control module's input.
In this embodiment, the air bleeding module comprises a fast air bleeding module and a slow air bleeding module, wherein the fast air bleeding module comprises a fast air bleeding control circuit and a first air bleeding valve; the first output end of the quick deflation control circuit is connected with the first end of the first deflation valve, and the second output end of the quick deflation control circuit is connected with the second end of the first deflation valve; the quick air release control circuit comprises a quick air release control input end and an overvoltage protection air release control end, and the output end of the main control module is respectively connected with the quick air release control input end and the overvoltage protection air release control end; the slow deflation module comprises a slow deflation control circuit and a second deflation valve; the output end of the main control module is connected with the input end of the slow deflation control circuit, the first output end of the slow deflation control circuit is connected with the first end of the second deflation valve, and the second output end of the slow deflation control circuit is connected with the second end of the second deflation valve.
The utility model discloses realize blood pressure detection's basic principle thought as follows:
1. when the systolic blood pressure detection is carried out:
the main control module controls the inflation control circuit to enable the inflation pump to start inflating until the ultrasonic blood flow detection module transmits a blood flow signal to the main control module, the main control module controls the inflation control circuit to close the inflation pump to stop inflating until the ultrasonic blood flow detection module does not detect the blood flow signal (or the main control module does not receive the blood flow signal transmitted by the probe), the main control module controls the quick deflation control circuit to close, controls the slow deflation control circuit to open to perform slow deflation, and transmits data acquired by the pressure sensor to the main control module through the blood pressure data acquisition circuit when the blood flow signal is detected by the blood flow detection probe during slow deflation, so that systolic pressure data can be acquired.
2. When diastolic blood pressure detection is performed:
after the systolic pressure test is finished, the main control module continues to control the quick deflation control circuit to work for quick deflation, and the data obtained by the pressure sensor is transmitted to the main control module through the blood pressure data acquisition circuit to obtain the diastolic pressure data after the blood flow signal transmitted to the main control module by the ultrasonic blood flow detection module tends to be stable.
When systolic pressure detection or diastolic pressure detection is carried out, pulse data are detected through a pulse data acquisition circuit in the blood pressure detection module, and the detected pulse data are transmitted to the main control module.
The main control module controls the quick deflation module and the slow deflation module to deflate the blood pressure detection device at different speeds, so that the technical problems that the blood pressure data detection is inaccurate, the use is inconvenient and the detection personnel with the use experience can carry out the blood pressure detection operation due to inaccurate deflation control when the blood pressure detection device needs to deflate manually to measure the blood pressure in the prior art are solved.
Specifically, as shown in fig. 13, the blood pressure data acquiring circuit in this embodiment includes: a forty-seventh resistor R47, a forty-eighth resistor R48, a forty-ninth resistor R49, a thirty-first capacitor C31, a thirty-second capacitor C32 and a fifth operational amplifier U15; a first end of a forty-seventh resistor R47 is connected to an output end of the pressure sensor, a second end of a forty-seventh resistor R47 is connected to a first end of a forty-eighth resistor R48 and a non-inverting input end of a fifth operational amplifier U15, a second end of the forty-eighth resistor R48 is connected to a power ground, an inverting input end of the fifth operational amplifier U15 is connected to an output end of the fifth operational amplifier U15 and a first end of a forty-ninth resistor R49, and a second end of the forty-ninth resistor R49 is connected to a first end of a thirty-eleventh capacitor C31, a first end of a thirty-second capacitor C32 and an input end of the main control module; the pressure data information obtained when the pressure sensor performs systolic pressure and diastolic pressure tests is transmitted to the main control module through the circuit, so that the systolic pressure and the diastolic pressure of a test object are obtained.
Referring to fig. 14, the pulse data acquisition circuit in the present embodiment includes: fifty-fifth resistor R50-fifty-sixth resistor R56, thirty-third capacitor C33, thirty-fourth capacitor C34, thirty-fifth capacitor C35, sixth operational amplifier U16, seventh operational amplifier U17, first bead L6 and external reference voltage signal input P1_ GND; wherein a first end of a thirty-third capacitor C33 is connected to the output end of the pressure sensor, a second end of a thirty-third capacitor C33 is connected to a first end of a fifty-third resistor R50 and the non-inverting input end of a sixth operational amplifier U16, a second end of a fifty-third resistor R50 is connected to a first end of a fifty-first resistor R51 and the external reference voltage signal input end P1_ GND, a second end of a fifty-first resistor R51 is connected to the inverting input end of the sixth operational amplifier U16 and the first end of a fifty-second resistor R52, a second end of a fifty-second resistor R52 is connected to the output end of the sixth operational amplifier U16 and the first end of the fifty-third resistor R53, a second end of a fifty-third resistor R53 is connected to a first end of a fourth resistor R54 and the first end of a thirty-fourth capacitor C34, a second end of a fifty-fourth resistor R54 is connected to the non-inverting input end of a seventh operational amplifier U17, a second end of the thirty-fourth capacitor C34 is connected to the inverting input terminal of the seventh operational amplifier U17, the output terminal of the seventh operational amplifier U17, and the first end of the first magnetic bead L6, a second end of the first magnetic bead L6 is connected to the first end of the fifty-fifth resistor R55, a second end of the fifty-fifth resistor R55 is connected to the first end of the fifty-sixth resistor R56, the first end of the thirty-fifth capacitor C35, and the input terminal of the main control module, and a second end of the fifty-sixth resistor R56 is connected to the second end of the thirty-fifth capacitor C35 and the power ground, respectively; the pressure data information obtained when the pressure sensor performs the pulse test is transmitted to the main control module through the circuit, so that the pulse data of the test object is obtained.
Referring to fig. 15, the inflation control circuit in the present embodiment includes: a fifty-seventh resistor R57, a fifty-eighth resistor R58, a fifty-ninth resistor R59, a thirty-sixth capacitor C36, a thirty-seventh capacitor C37, a fifth diode D5, a sixth triode Q6, a first MOS tube Q7 and a second MOS tube Q8; wherein, the thirty-seventh capacitor C37 is a polar capacitor, the sixth triode Q6 is an NPN triode, the first MOS tube Q7 and the second MOS tube Q8 are both PMOS transistors, the first end of the fifty-seventh resistor R57 is connected to the charging control terminal NIBP _ charge of the main control module, the second end of the fifty-seventh resistor R57 is connected to the base of the sixth triode Q6, the emitter of the sixth triode Q6 is connected to the first end of the fifty-eighth resistor R58 and the first end of the fifty-ninth resistor R59, the collector of the sixth triode Q6 is connected to the external 5V power supply, the second end of the fifty-ninth resistor R59 is connected to the power ground, the second end of the fifty-eighth resistor R58 is connected to the gate of the first MOS tube Q7, the source of the first MOS tube Q7 is connected to the drain of the second transistor Q8, the gate of the second MOS tube Q8 is connected to the charging control terminal NIBP of the main control module, the second drain of the second transistor Q8 is connected to the charging control terminal nimp _ bp, and the drain of the first MOS tube Q7, and the second transistor Q638 are connected to the drain of the first MOS PUMP, The anode of the fifth diode D5 is connected, the cathode of the fifth diode D5 is connected to the second input terminal PUMP _ a of the inflator PUMP, the first end of the thirty-sixth capacitor C36, the anode of the thirty-seventh capacitor C37 and the external 5V power supply, and the second end of the thirty-sixth capacitor C36 and the cathode of the thirty-seventh capacitor C37 are connected to the power ground; when the systolic pressure detection is carried out, the circuit main control module can safely and effectively control the device to inflate.
Referring to fig. 16, the quick deflation control circuit in this embodiment comprises: a sixty resistor R60, a sixty-first resistor R61, a sixty-second resistor R62, a seventh triode Q9, a third MOS transistor Q10, a fourth MOS transistor Q11, a sixth diode D6, and a thirty-eighth capacitor C38; wherein, the thirty-eighth capacitor C38 is a polar capacitor, the first end of the sixty resistor R60 is a control end NIBP _ def _ fast of the fast deflation control circuit, the first end of the sixty resistor R60 is connected with the main control module, the second end of the sixty resistor R60 is connected with the base of the seventh triode Q9, the collector of the seventh triode Q9 is connected with an external +5VD power supply, the emitter of the seventh triode Q9 is respectively connected with the first end of the sixty resistor R61 and the gate of the third MOS transistor Q10, the second end of the sixty resistor R61 is connected with the power ground, the source of the third MOS transistor Q10 is connected with the drain of the fourth MOS transistor Q11, the gate of the fourth MOS transistor Q11 is an enable end of the fast deflation control circuit, the gate of the fourth MOS transistor Q11 is respectively connected with the main control module, the first end of the sixty second resistor R62, the second end of the sixty resistor R62 is connected with the external power supply, the source of the sixth resistor R365 + VD power supply is connected with the fourth MOS 11, the drain of the third MOS transistor Q10 is connected to the anode of the sixth diode D6 and the first end N _ F _ K of the first purge valve, respectively, the cathode of the sixth diode D6 is connected to the second end of the first purge valve, the anode of the thirty-eighth capacitor C38 and the external +5VD power supply, respectively, and the cathode of the thirty-eighth capacitor C38 is connected to the power ground. Referring to fig. 11, a main control module of an air bleeding control circuit of a blood pressure monitor according to the present invention includes an STM32F103R8T6 chip U14 having an overvoltage control output terminal NIBP _ EN connected to a second PMOS transistor of a quick air bleeding control circuit, a quick air bleeding control output terminal NIBP _ def _ fast connected to a first end of a sixteenth resistor R60 of the quick air bleeding control circuit, through the quick air bleeding control circuit, the blood pressure monitor is in a quick air bleeding state when being powered on, i.e. the quick air bleeding control output terminal NIBP _ def _ fast and the overvoltage control output terminal NIBP _ EN of the main control module both output continuous low level signals, a sixth diode D6, a third MOS transistor Q10 and a fourth MOS transistor Q11 are turned on, the first air bleeding valve is opened, when the apparatus is inflated, the quick air bleeding control output terminal NIBP _ def _ fast and the overvoltage control output terminal NIBP _ EN of the main control module both output continuous high level signals so that the first air bleeding valve is closed, the pressure of the device is raised to perform blood pressure detection. However, when the pressure value obtained by the main control module exceeds a set first threshold value or the blood pressure detection is finished, the quick deflation control output end NIBP _ def _ fast and the overpressure control output end NIBP _ EN of the main control module both output continuous low level signals, so that the pressure value of the device is reduced to a second threshold value preset in a safety range, and the injury of the person to be detected or the damage of the blood pressure detection equipment are avoided; at the end stage of blood pressure detection, the main control module controls the quick deflation module to deflate quickly by sending continuous signals, so that the time required by blood pressure detection is saved, and the working efficiency of the equipment is improved.
Referring to fig. 17, the slow bleed control circuit in the present embodiment includes: sixty-third resistor R63, sixty-fourth resistor R64, sixty-fifth resistor R65, thirty-ninth capacitor C39, fortieth capacitor C40, eighth triode Q12, fifth MOS tube Q13 and seventh diode D7; wherein, the forty-first capacitor C40 is a polar capacitor, the first end of the sixty-third resistor R63 is the control end NIBP _ def _ slow of the slow bleed control circuit, the first end of the sixty-third resistor R63 is connected to the main control module, the second end of the sixty-third resistor R63 is respectively connected to the first end of the sixty-fourth resistor R64 and the base of the eighth triode Q12, the second end of the sixty-fourth resistor R64 is respectively connected to the emitter and the power ground of the eighth triode Q12, the collector of the eighth triode Q12 is respectively connected to the first end of the sixty-fifth resistor R65 and the gate of the fifth MOS Q13, the second end of the sixty-fifth resistor R65 is respectively connected to the first end of the thirty-ninth capacitor C39 and the external +5VD power supply, the second end of the thirty-ninth capacitor C39 is connected to the power ground, the drain of the fifth MOS transistor Q13 is connected to the power ground, and the drain of the fifth MOS 13 is respectively connected to the positive electrode of the seventh diode Q7, The first end N _ S _ K of the second deflation valve is connected, the cathode of the seventh diode D7 is respectively connected with the first end of a fortieth capacitor C40 and an external +5VD power supply, and the second end of the fortieth capacitor C40 is connected with the power ground. Referring to fig. 11, the main control module has a slow deflation control output terminal NIBP _ def _ slow connected to the first terminal of the sixty-third resistor R63 in the slow deflation control circuit, and the blood pressure detecting apparatus is in a slow deflation state when being powered on, i.e. the slow deflation control output terminal NIBP _ def _ slow of the main control module outputs a continuous high level signal, so that the eighth triode Q12 and the fifth MOS transistor Q13 are turned on, the second deflation valve is opened, and the apparatus performs slow deflation; when the device aerifys, master control module's slow gassing control output NIBP _ def _ slow output is lasting low level signal, make the second bleed valve close, when carrying out blood pressure detection, master control module's slow gassing control output NIBP _ def _ slow output is discontinuous, short-term high level pulse signal makes the second bleed valve open, make the device carry out discontinuity, the short-term is bled slowly, the blood pressure data for measuring the personnel that await measuring, through discontinuity, the blood pressure data that measure the personnel that await measuring that can be accurate of short-term slow gassing, the blood pressure data of having avoided the manual work to bleed because the problem of operation is surveyed are not accurate enough.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (11)
1. A blood pressure monitor, comprising:
the ultrasonic blood flow detection module is used for transmitting a first ultrasonic detection analog signal, receiving a second ultrasonic detection analog signal formed by reflecting the first ultrasonic detection analog signal after blood treatment and outputting an ultrasonic detection digital signal;
the blood pressure detection module is used for acquiring and outputting blood pressure data;
and the main control module is used for receiving and processing the ultrasonic detection digital signals to acquire blood flow data and receiving the blood pressure data.
2. The blood pressure monitor of claim 1, wherein the ultrasonic blood pressure monitor module comprises:
the ultrasonic detection module is used for transmitting the first ultrasonic detection analog signal and receiving the second ultrasonic detection analog signal formed by reflecting the first ultrasonic detection analog signal after blood passes through;
the blood flow signal shunting module is used for respectively shunting and outputting the second ultrasonic detection analog signals received by the ultrasonic detection module by using 2 paths of demodulation signals;
a blood flow direction processing module; and the ultrasonic detection digital signal is output after the ultrasonic detection analog signal which is output by the blood flow signal branching module in a branching way is processed.
3. The blood flow and blood pressure detecting device according to claim 2, wherein the ultrasonic probe module comprises an ultrasonic probe including an ultrasonic wave generating circuit, an ultrasonic wave receiving resonance circuit and an ultrasonic wave transmitting circuit; the output end of the ultrasonic receiving resonance circuit is connected with the input end of the blood flow signal branching module, and the output end of the ultrasonic generating circuit is respectively connected with the input end of the ultrasonic transmitting circuit and the input end of the blood flow signal branching module.
4. The blood pressure detection device according to claim 3, wherein the blood flow signal branching module includes a first frequency dividing circuit and a second frequency dividing circuit; the first output of ultrasonic wave generating circuit with first frequency divider's first input is connected, ultrasonic wave receiving resonance circuit's output with first frequency divider's second input is connected, first frequency divider's output with blood flow direction is connected to processing module's first input, ultrasonic wave generating circuit's second output with second frequency divider's first input is connected, ultrasonic wave receiving resonance circuit's output with second frequency divider's second input is connected, second frequency divider's output with blood flow direction is connected to processing module's second input.
5. The blood pressure detection device of claim 4, wherein the blood flow direction processing module comprises a first blood flow direction processing sub-module and a second blood flow direction processing sub-module; the first blood flow direction processing sub-module comprises a first filtering amplification circuit and a first analog-to-digital conversion circuit, the output end of the first frequency division circuit is connected with the input end of the first filtering amplification circuit, the output end of the first filtering amplification circuit is connected with the input end of the first analog-to-digital conversion circuit, and the output end of the first analog-to-digital conversion circuit is connected with the input end of the main control module; the second blood flow direction processing sub-module comprises a second filtering amplification circuit and a second analog-to-digital conversion circuit, the output end of the second frequency dividing circuit is connected with the input end of the second filtering amplification circuit, the output end of the second filtering amplification circuit is connected with the input end of the second analog-to-digital conversion circuit, and the output end of the second analog-to-digital conversion circuit is connected with the input end of the main control module.
6. The blood pressure monitor according to any one of claims 1 to 5, wherein the blood pressure monitor module comprises:
the inflation module is used for controlling the blood flow and blood pressure detection device to inflate during blood pressure detection;
the deflation module is used for controlling the blood flow and blood pressure detection device to deflate during blood pressure detection;
the blood pressure data acquisition module is used for acquiring the blood pressure data;
the input end of the inflation module and the input end of the deflation module are connected with the output end of the main control module, and the output end of the blood pressure data acquisition module is connected with the input end of the main control module.
7. The device for detecting blood pressure according to claim 6, wherein the inflation module comprises an inflation pump and an inflation control circuit, the inflation control circuit is respectively connected with the inflation pump and the main control module, and the inflation control circuit is controlled by the main control module to control the inflation pump to inflate.
8. The blood pressure monitoring device of claim 7, wherein the deflation module comprises a fast deflation module and a slow deflation module; the output end of the main control module is connected with the input end of the quick deflation module so as to control the blood flow and blood pressure detection device to perform quick deflation; the output end of the main control module is connected with the input end of the slow deflation module so as to control the blood flow and blood pressure detection device to perform slow deflation.
9. The blood pressure monitoring device of claim 8, wherein the quick deflation module comprises a quick deflation control circuit and a first deflation valve; a first output end of the quick deflation control circuit is connected with a first end of the first deflation valve, and a second output end of the quick deflation control circuit is connected with a second end of the first deflation valve; the quick deflation control circuit comprises a quick deflation control input end and an overvoltage protection deflation control end, and the output end of the main control module is respectively connected with the quick deflation control input end and the overvoltage protection deflation control end; the slow deflation module comprises a slow deflation control circuit and a second deflation valve; the output end of the main control module is connected with the input end of the slow deflation control circuit, the first output end of the slow deflation control circuit is connected with the first end of the second deflation valve, and the second output end of the slow deflation control circuit is connected with the second end of the second deflation valve.
10. The device according to claim 6, wherein the blood pressure data acquisition module comprises a pressure sensor and a blood pressure data acquisition circuit, an output end of the pressure sensor is connected with an input end of the blood pressure acquisition circuit, and an output end of the blood pressure data acquisition circuit is connected with an input end of the main control module.
11. The device of claim 10, further comprising a pulse data acquisition circuit, wherein the output of the pressure sensor is connected to the input of the pulse data acquisition circuit, and the output of the pulse data acquisition circuit is connected to the input of the main control module.
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| CN201920465383.8U CN210277150U (en) | 2019-04-08 | 2019-04-08 | Blood flow and blood pressure detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200613A (en) * | 2019-04-08 | 2019-09-06 | 深圳市贝斯曼精密仪器有限公司 | A kind of blood flow blood pressure detector |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200613A (en) * | 2019-04-08 | 2019-09-06 | 深圳市贝斯曼精密仪器有限公司 | A kind of blood flow blood pressure detector |
| CN110200613B (en) * | 2019-04-08 | 2024-02-20 | 深圳市贝斯曼精密仪器有限公司 | Blood flow and blood pressure detection device |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |