CN2363654Y - Heart function parameter tester - Google Patents
Heart function parameter tester Download PDFInfo
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- CN2363654Y CN2363654Y CN 99235200 CN99235200U CN2363654Y CN 2363654 Y CN2363654 Y CN 2363654Y CN 99235200 CN99235200 CN 99235200 CN 99235200 U CN99235200 U CN 99235200U CN 2363654 Y CN2363654 Y CN 2363654Y
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Abstract
The utility model relates to a heart function parameter detector. The utility model is composed of a heart-electricity lead electrode sensor, a heart-sound transducer, a vein pulsation wave sensor, analog signal regulating circuit boards, an A/D converter and a computer; the heart-electricity lead electrode sensor, the heart-sound transducer and the vein pulsation wave sensor transmit detected signals to the individual analog signal regulating circuit board to amplify and filter the signals, the detected signals are regulated to be within positive and negative five volts, and then the A/D converter converts the analog signals into digital signals and transmits the digital signals into the computer. The utility model can detect automatically, precisely and accurately the function of the heart and automatically analyze and process data at high speed.
Description
This utility model relates to medical apparatus, relates to the medical apparatus that heart function parameter noinvasive triage is surveyed in more detail.
Systolic time interval (being called for short STI) is measured, and is that a kind of of clinical practice is the non-invasive cardiac inspection method of parameter with time.It is by the synchronous detecting to electrocardiogram (be called for short ECG), phonocardiogram (being called for short PCG), these heart function parameters of carotid pulse wave figure (being called for short CAP), the interval performance of phase when calculating in the left ventricle systole each, and nationality is with the functional status of appraisal left ventricle.Clinically, confirm already to meet fully in the directly measured STI value of aortic root with wound property tremie method is arranged by the STI of the non-invasive mensuration of body surface, and confirmed STI and be not other cardiac functional parameter of original parameter with the time that changing (dp/dt), ejection fraction (EF) and heartbeat blood volume (SV) etc. such as left ventricular pressure also has tangible dependency relation.Therefore, it is easy that STI mensuration has been confirmed to be a kind of operational approach, and the result is more reliable, can quantitatively evaluate the inspection method of various cardiac's left ventricular functions, can repeat, can be to analyze the state, work out the treatment measure, evaluation curative effect and estimating prognosis etc. provide objective basis.Be often used as the main foundation of diagnosing for to coronary heart disease, aortic valve disease, mitral pathological changes, hypertension etc. clinically.The RM-6000 type heart function parameter non-invasive detector that Japanese photoelectricity company produces is to use more general a kind of detecting instrument at present, Fig. 1 is a RM-6000 type electrocardio, hear sounds, the block diagram of carotid pulse wave non-invasive detector, as shown in the figure, this detector is mainly by the cardiac diagnosis lead electrode, heart sound transducer, detection part and analogue signal amplification (filtering) devices such as carotid pulsation wave sensor, conformable display and thermal printer constitute, its work process is by the active electrocardiosignal of cardiac diagnosis lead electrode detection reflection cardiac electrophysiology, scheming tool signal (carotid pulse wave) by machcardiogram sensor reflection heart pump physiological function, detect the physiology acoustical signal (hear sounds) of reflection heart movement by heart sound transducer, these signals are directly sent into analogue signal and are amplified (filtering) device, after amplification and filtering, obtain electrocardiogram, phonocardiogram, three kinds of analog waveforms of carotid pulse wave figure show with thermal printer by conformable display and to print for the staff analyzing and processing.
There is following shortcoming in this class heart function parameter non-invasive detector: 1, automaticity is not high enough, all needs certain manually-operated when detection, calculating and analytical parameters; 2, detect degree of accuracy and be subjected to the anthropic factor influence, reliability is still not high enough; 3, be subjected to the influence of noise jamming and signal variation easily.
The purpose of this utility model is to provide a kind of cardiac functional parameter detector, to cardiac function carry out automatically, accurate, detect accurately, and can carry out fast automatic analyzing and processing to data.
This utility model is to realize by following technical scheme: cardiac functional parameter detector of the present utility model mainly is made of cardiac diagnosis lead electrode, heart sound transducer, carotid pulsation wave sensor, analog signal conditioner circuit board, A/D converter, computer.Cardiac diagnosis lead electrode, heart sound transducer, carotid pulse wave sensor go out electrocardio, hear sounds, carotid pulse wave analogue signal, these signals are delivered to analog signal conditioner circuit separately respectively, to various signals amplify, processing such as filtering, and signal adjusted to ± 5V is with interior amplitude, become analog signal conversion digital signal to send into computer through A/D converter, measurement result is shown and analyzing and processing.
Computer can be used wavelet analysis technology and medical expert knowledge with time one frequency analysis ability to the analyzing and processing of data digital signal is carried out analyzing and processing, calculates 20 kinds of cardiac function physiological parameters according to cardiac electrophysiology and the physiological mechanism of heart pump; Set up the case history archive storehouse, for case history inquiry, classification, statistical work provide data information; Printer output examining report harmony in the exterior signal waveforms.
Analog signal conditioner circuit board in the cardiac functional parameter detector of the present utility model is made of ECG simulator signal conditioning circuit, hear sounds analog signal conditioner circuit, carotid pulse wave analog signal conditioner circuit.The ECG simulator signal conditioning circuit is made of with preamplifier AD620, low pass filter, high pass filter, wave trap etc. input amplifier, driven-right-leg circuit, shielding drive circuit, calibration voltage, analog multichannel switch, INST circuit, instrument.Input buffer amplifier is accepted from three faint electrocardiosignaies of obtaining electrode R, L, F, and plays impedance matching, the influence that driven-right-leg circuit and screened circuit are used to reduce common mode interference signal and reduce to shield distribution capacity.Signal is delivered to differential input through analog multichannel switch instrument carries out first order amplification with preamplifier AD620, and then by low pass filter and high pass filter filtering noise signal, wave trap is used for filtering and exchanges interference.Signal is sent to mould/number conversion card by the one-level follower, and computer goes to control analog multichannel switch gating electrocardiosignal or calibration signal by the digital signal of mould/number conversion card output, and makes the INST circuit operation.
Hear sounds analog signal conditioner circuit is made of input buffer amplifier, high pass filter, low pass filter and gain-adjusted amplifier.
Carotid pulse wave analog signal conditioner circuit is made of input buffer amplifier, high pass filter, gain-adjusted amplifier.
A/D converter in the cardiac functional parameter detector of the present utility model can use commercially available A/D converter, PCL-711 pattern/number conversion card of producing of Taiwan for example, also can use 12 A/D converters of the present utility model people design, by analog multichannel switch, buffer amplifier, analog to digital conversion circuit, the PIC16 single-chip microcomputer, photoelectric isolating circuit, the FIFO memorizer, formations such as GAL Programmable Logic Device and data latches, analog multichannel switch receives measured analogue signal, high-frequency interferencing signal is carried out filtering and inhibition, output to buffer amplifier, receive analog to digital conversion circuit, the output digital signal is added to photoelectric isolating circuit, number of pulses is delivered to memorizer according to after carrying out shaping.Single-chip microcomputer is accepted the instruction of microcomputer, control is selected on sample road number of multi-way switch circuit, the cue that sends is connected to Programmable Logic Device by photoelectric isolating circuit, deliver at last on the data/address bus of microcomputer, microcomputer sends control instruction by latch to single-chip microcomputer, and digital signal is exported through photoelectric isolating circuit.
The computer that this utility model uses comprises commercially available microcomputer, keyboard, mouse, color display and printer.
The present invention compared with prior art has following advantage:
1, this utility model is by being equipped with the computerization medical apparatus that special signal modulate circuit and A/D converter constitute, used wavelet analysis technology and medical expert knowledge is handled digital signal, set up the file administration data base, can instant printout have comprised that the examining report harmony in the exterior of 20 parameters of left ventricular function traces the signal waveforms of curve mode record with traditional grid coordinates.Improved accuracy of detection and automatization level, function increases, and operates more flexible.
2, signal conditioning circuit of the present utility model has been realized the range automatic switchover under computer control, null offset compensates automatically, the automatic fault diagnosis function, simplified electronic circuit, optimized apparatus structure, under the prerequisite that guarantees certainty of measurement, also can save the trouble of partially manual adjustment circuit parameter.
3,12 A/D converters of this utility model employing can be accepted host command, under self Single-chip Controlling, work, self-timing, automatically gating sampling road number, cooperate main frame under the Windows operating system environment, to carry out programming with Visual C++, needn't consider to interrupt control mode, only need under inquiry mode, just can accurately control sampling rate, real-time sampling and demonstration measured signal waveform.
4,12 A/D converters of this utility model employing utilize the digital signal photoelectric isolation technology, compare with the analogue signal isolation technology of common employing, and this utility model does not produce additional nonlinearity erron or transformed error.
Fig. 2 is a cardiac functional parameter detector block diagram of the present utility model.
The 3rd, analog signal conditioner circuit diagram among Fig. 1.
Fig. 4 is 12 A/D converter block diagram among Fig. 1.
Fig. 5 is 12 analog-to-digital converter circuit figure among Fig. 1.
Below by embodiment and accompanying drawing this utility model is done further narration.
Embodiment
As shown in Figure 2, cardiac functional parameter detector of the present utility model mainly is made of cardiac diagnosis lead electrode, heart sound transducer, machcardiogram pick off, analog signal conditioner circuit board, 12 A/D converters, computers.By the active electrocardiosignal of cardiac diagnosis lead electrode detection reflection cardiac electrophysiology, scheming tool signal (carotid pulse wave) by machcardiogram sensor reflection heart pump physiological function, detect the physiology acoustical signal (hear sounds) of reflection heart movement by heart sound transducer, these signals are delivered to analog signal conditioner circuit separately respectively, characteristics and requirement at various signals are amplified, processing such as filtering, and signal adjusted to ± 5V is with interior amplitude, become analog signal conversion digital signal to send into computer through 12 A/D converters, computer shows measurement result in real time with graphics mode, and data are carried out analyzing and processing, print examining report.
Computer is to use wavelet analysis technology and medical expert knowledge with T/F analysis ability digital signal is carried out analyzing and processing to the analyzing and processing of data, calculates 20 kinds of cardiac function physiological parameters according to cardiac electrophysiology and the physiological mechanism of heart pump; Set up the case history archive storehouse, for case history inquiry, classification, statistical work provide data information; Printer output examining report harmony in the exterior signal waveforms.
Cardiac functional parameter detector basic technical indicator of the present utility model is:
Test signal four tunnel: electrocardiographic criteria limb lead ECGI, ECGII
Phonocardiogram (PCG)
Carotic pulse graph (CAP)
Mould/number resolution: 12
Sample frequency: adjustable, routine is set to 250 times/second or 500 times/second
Signal band: ECG:0.05-100Hz
PCG：20-1000Hz
CAP：0.1-50Hz
Detected parameters: T, u, QS1, QS2, LVET, u-O
Output waveform figure: 25cm/S, 50cm/S, 100cm/S
The hardware configuration of instrument system of the present utility model meets national Medical Instruments electrical equipment safety criterion.
As shown in Figure 3, the analog signal conditioner circuit board in the cardiac functional parameter detector of the present utility model is made of ECG simulator signal conditioning circuit, hear sounds analog signal conditioner circuit, carotid pulse wave analog signal conditioner circuit.The ECG simulator signal conditioning circuit is made of with preamplifier AD620, low pass filter, high pass filter, wave trap etc. input amplifier, driven-right-leg circuit, shielding drive circuit, calibration voltage, analog multichannel switch, INST circuit, instrument.Input buffer amplifier is accepted from three faint electrocardiosignaies of obtaining electrode R, L, F, and plays impedance matching, the influence that driven-right-leg circuit and screened circuit are used to reduce common mode interference signal and reduce to shield distribution capacity.Signal is delivered to differential input through analog multichannel switch instrument carries out first order amplification with preamplifier AD620, and then by low pass filter and high pass filter filtering noise signal, wave trap is used for filtering and exchanges interference.Signal is sent to mould/number conversion card by the one-level follower, and computer goes to control analog multichannel switch gating electrocardiosignal or calibration signal by the digital signal of mould/number conversion card output, and makes the INST circuit operation.
Hear sounds analog signal conditioner circuit is made of input buffer amplifier, high pass filter, low pass filter and gain-adjusted amplifier.
Carotid pulse wave analog signal conditioner circuit is made of input buffer amplifier, high pass filter, gain-adjusted amplifier.
J1 is the ECG socket that leads among the figure, and the surface electrocardiogram signal is imported thus.Three electrocardiosignaies of obtaining on electrode R, L, the F are at first received the buffer amplifier of three voltage follower forms that IC1 constitutes, and this circuit input impedance is very high and output impedance is very low, are beneficial to post-amplifier to mate.The D1-D6 that is connected across the buffer amplifier input/output terminal is the input protection diode, and during operate as normal, electrocardiosignal has only several millivolts; not conducting of diode; when interfering signal during greater than 0.6V, diode current flow descends input impedance, and inhibitory action is played in strong jamming.IC1:D is connected into voltage follower as the shielding drive circuit, can eliminate the influence of shielding distribution capacity.IC2:B and related elements constitute driven-right-leg circuit, can offset the common mode interference signal on other limb electrodes, improve common mode rejection ratio.Z0 and bleeder circuit thereof provide the calibration voltage of 1mV, and IC2:A, C0, R24-R29 and T1 constitute the square-wave generator of a Transistor-Transistor Logic level, the break-make control signal of control 1mV calibration voltage.IC3 is an analog electronic switching circuit, and the switching that the control level B0 that A, B, three control ends of C are exported by microcomputer comes gauge tap is in order to realize gating to cardiac diagnosis lead signal or 1mV calibration signal.One group of switch A, X0, X1 and X of analog electronic switching circuit IC4 are transformed to square wave to the 1mV calibration signal and deliver to IC3 again, other two groups of analog switches by B and C control are formed baseline nulling circuit (INST circuit), under the control of the control level B1 that microcomputer is exported, Y, Z produce the moment shorted to earth, the electrocardiosignal amplifying circuit cuts out in short-term, avoid interference the signal input, make baseline be returned to zero-bit rapidly.One group of switch A, X0 of analog electronic switching circuit IC5, X1 and X cooperate starting of oscillation and the failure of oscillation of the state controlling party wave producer IC circuit 2:A of microcomputer control signal B0, then are used for selecting whether to insert the myoelectricity wave filter by other two groups of analog switches of B and C control.
IC6, IC7, IC8 constitute the amplification filtering circuit of electrocardiogram ECG I, and IC9, IC10, IC11 constitute the amplification filtering circuit of electrocardiogram ECGII.The structure and parameter of these two groups of circuit is identical.IC6 is the preamplifier that adopts high-performance instrumentation amplifier AD620 to constitute, and its gain is 20 times, and this grade common mode rejection ratio can reach 100dB, and the common mode rejection ratio of complete machine is played a decisive role.C33 and R43, R44 form the RC time constant circuit, have determined the low-frequency transmission characteristic of circuit.IC7:A is a direct current amplifier, further amplifies electrocardiosignal.IC7:B and IC7:C are respectively low pass filter and high pass filter, and passband is 0.05Hz-100Hz.IC7:D and IC8:A constitute the myoelectricity wave filter, can disturb by filtering 35Hz-45Hz myoelectricity.IC8:B, IC8:C and IC8:D form interference trap, and filtering 50Hz exchanges interference.Last electrocardiosignal is carried and is removed A/D plate interface J0 through the one-level voltage follower.
J2 in the analog signal conditioner circuit is the PCG sensor socket, and cardiechema signals is imported thus.IC13:A is a voltage follower, plays buffering and amplifies and the impedance matching effect.IC13:B is a high pass filter, and IC13:C is a low pass filter, and the passband that they constitute is 20Hz-1000Hz.IC13:D is a direct current amplifier, in order to the gain of conditioning signal.Last signal is carried and is removed A/D plate interface J0 through the one-level voltage follower.
J3 in the analog signal conditioner circuit is the CAP sensor socket, and the carotid pulsation signal is imported thus.IC14:A is a voltage follower, plays buffering and amplifies and the impedance matching effect.IC14:B is a high pass filter, is to be provided with for the sensor drift signal of filtering extremely low frequency.IC13:C is a direct current amplifier, in order to the gain of conditioning signal.Signal is carried and is removed A/D plate interface J0 through voltage follower.
As shown in Figure 4,12 A/D converters are made of analog multichannel switch, buffer amplifier, analog to digital conversion circuit, PIC16 single-chip microcomputer, photoelectric isolating circuit, FIFO memorizer, GAL Programmable Logic Device and data latches etc., analog multichannel switch receives measured analogue signal, high-frequency interferencing signal is carried out filtering and inhibition, output to buffer amplifier, receive analog to digital conversion circuit, the output digital signal is added to photoelectric isolating circuit, number of pulses is delivered to memorizer according to after carrying out shaping.Single-chip microcomputer is accepted the instruction of microcomputer, control is selected on sample road number of multi-way switch circuit, the cue that sends is connected to Programmable Logic Device by photoelectric isolating circuit, deliver at last on the data/address bus of microcomputer, microcomputer sends control instruction by latch to single-chip microcomputer, and digital signal is exported through photoelectric isolating circuit.
As shown in Figure 5, measured analogue signal is received the input of analog multichannel switch IC circuit 1, R1-R8 among the figure, and C1-C8 plays the filtering inhibitory action to high-frequency interferencing signal; The output of variable connector behind buffer amplifier IC2, is received the analog quantity input of IC3 analog-digital converter AD574, and analog-digital converter connects according to bipolarity analog quantity input mode, carries out zero adjustment with potentiometer W1, and potentiometer W2 carries out the full scale adjustment.The data way of output of AD574 is 12 conversions, 8 outputs at twice, outputting data signals is added to the signal input side of photoelectric isolating circuit IC7, IC8 through data buffering drive circuit IC6, certain time-delay and burr can take place in signal behind photoelectric isolating circuit, the data pulse is carried out delivering to after the shaping data input pin of FIFO memory IC 13 by IC11, IC12.
IC4 is the PIC16 single-chip microcomputer, its I/O terminal assignment is as follows: A0-A3 is the input line, acceptance is from the instruction of PC microcomputer, command content comprises the selection mode, sample frequency, self-defining contact password on sampling road number etc., so-called sampling road selection mode is promptly gone the rounds sampling according to what order to which road, and the contact password then can be used for object identification when needed or encrypted ones is set; B0-B7 is a delivery outlet, wherein B0-B2 receives variable connector IC1, control the selection on eight sampling roads number, B3 is the marker delivery outlet, and B3 produces " logic OR " with the data input pin DB4 of AD converter IC3 by IC5 and is added back on the corresponding data bit of DB4, generally again, the data that do not influence DB4 transmit, only when touring sampling, when to the low four figures of initial road number sampling according to sending when effective just adding " 1 "; B4 is the output lead of cue, and it is connected to Programmable Logic Device IC14 by photoelectric isolating circuit, delivers at last on the data/address bus of PC, to reply the contact password of PC; B5 exports a data write signal, and the data that it receives FIFO memory IC 13 by photoelectric isolating circuit write control end W, cooperates the AD conversion timing sequence, produces and writes pulse, writes the FIFO memorizer during with the fructufy of A/D conversion; B6 is connected to AD converter A0 end, effectively select with low four outputs in order to the transition status of control AD circuit and the high eight-bit of control AD circuit data delivery outlet, keep low level at transition period B6, promptly finish 12 conversions, the low four figures certificate of output is exported high four figures certificate during for " 0 " when converting back B6 for " 1 "; B7 is connected to the R/C* end of AD converter, produces the pulse of conversion start-up control.
IC13 is asynchronous FIFO (FIFO) memorizer, its data input pin is accepted the data from A/D converter, write signal end W, be subjected to the control of single-chip microcomputer IC4, its data output end is connected to the data/address bus of PC, and read output signal end R is connected to IC14, control by PC, its reset terminal RS, the empty sign of data EF end, the half-full sign of data HF end also all is connected to IC14.
IC14 is PLD GAL20V8A, the function of executive address decoding and each control signal logical combination.IC14 accepts address signal and the read-write control signal IOR and the IOW of PC bus, also insert flag bit EF and the HF of FIFO, 3 control signals have been combined into, with one group of status signal, F3 meets the RS of IC13, produces the reset signal of FIFO memorizer, F5 meets the CLK of IC18, produce output data strobe signal, F7 meets the R of IC13, produces the read output signal of FIFO memorizer.Three status signals are connected on the PC data/address bus with the ternary way of output: D0 is a data fifo dummy status sign, and D1 is the half-full sign of data fifo, and D2 is the cue by single-chip microcomputer IC4 output.
IC18 is 8 latch, and PC sends control instruction to the PIC single-chip microcomputer by IC18, and digital signal needs export through photoelectric isolating circuit IC16, IC17 equally.
The output digital signal is after IC15 exports, and wherein CLEAR is the reset signal of single-chip microcomputer, and DATA6-DATA3 is the Single-chip Controlling instruction.DATA2-DATA0 is connected to accessory power outlet, can be used as the control logic of signal conditioning circuit.
Its basic technical indicator is:
Input signal way: 8 tunnel
Input signal range :-5-+5V
A/D resolution: 12
Sample frequency: adjustable, single channel when sampling, reach 5000 times/S the soonest
Claims (1)
1, a kind of cardiac functional parameter detector is characterized in that mainly being made of cardiac diagnosis lead electrode, heart sound transducer, carotid pulsation wave sensor, analog signal conditioner circuit board, A/D converter, computer; The cardiac diagnosis lead electrode, heart sound transducer, the carotid pulse wave sensor goes out electrocardio, hear sounds, the carotid pulse wave analogue signal, deliver to analog signal conditioner circuit separately respectively, various signals are amplified, processing such as filtering, and signal adjusted to ± 5V is with interior amplitude, become analog signal conversion digital signal to send into computer through A/D converter, to measurement result show with analyzing and processing analog signal conditioner circuit board by the ECG simulator signal conditioning circuit, hear sounds analog signal conditioner circuit, carotid pulse wave analog signal conditioner circuit constitutes; The ECG simulator signal conditioning circuit is made of with preamplifier AD620, low pass filter, high pass filter, wave trap etc. input amplifier, driven-right-leg circuit, shielding drive circuit, calibration voltage, analog multichannel switch, INST circuit, instrument.Input buffer amplifier is accepted from three faint electrocardiosignaies of obtaining electrode R, L, F, and plays impedance matching, the influence that driven-right-leg circuit and screened circuit are used to reduce common mode interference signal and reduce to shield distribution capacity; Signal is delivered to differential input through analog multichannel switch instrument carries out first order amplification with preamplifier AD620, and then by low pass filter and high pass filter filtering noise signal, wave trap is used for filtering 50Hz and exchanges interference; Signal is sent to mould/number conversion card by the one-level follower, and computer goes to control analog multichannel switch gating electrocardiosignal or calibration signal by the digital signal of mould/number conversion card output, makes the INST circuit operation; Hear sounds analog signal conditioner circuit is made of input buffer amplifier, high pass filter, low pass filter and gain-adjusted amplifier; Carotid pulse wave analog signal conditioner circuit is made of input buffer amplifier, high pass filter, gain-adjusted amplifier.
Cardiac functional parameter detector according to claim 1, it is characterized in that A/D converter wherein is 12 A/D converters, by analog multichannel switch, buffer amplifier, analog to digital conversion circuit, the PIC16 single-chip microcomputer, photoelectric isolating circuit, FIFO memorizer, formations such as GAL Programmable Logic Device and data latches, analog multichannel switch receives measured analogue signal, and high-frequency interferencing signal is carried out filtering and inhibition, outputs to buffer amplifier, receive analog to digital conversion circuit, the output digital signal is added to photoelectric isolating circuit, and number of pulses is delivered to memorizer according to after carrying out shaping.Single-chip microcomputer is accepted the instruction of microcomputer, control is selected on sample road number of multi-way switch circuit, the cue that sends is connected to Programmable Logic Device by photoelectric isolating circuit, deliver at last on the data/address bus of microcomputer, microcomputer sends control instruction by latch to single-chip microcomputer, and digital signal is exported through photoelectric isolating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99235200 CN2363654Y (en) | 1999-01-19 | 1999-01-19 | Heart function parameter tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99235200 CN2363654Y (en) | 1999-01-19 | 1999-01-19 | Heart function parameter tester |
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| CN2363654Y true CN2363654Y (en) | 2000-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 99235200 Expired - Fee Related CN2363654Y (en) | 1999-01-19 | 1999-01-19 | Heart function parameter tester |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299640C (en) * | 2004-11-18 | 2007-02-14 | 天津大学 | Bioelectrical detection circuit |
| CN100413464C (en) * | 2006-05-26 | 2008-08-27 | 中国人民解放军空军航空医学研究所 | Method and apparatus for continuously measuring blood pressure |
| CN100515327C (en) * | 2007-12-06 | 2009-07-22 | 山东大学 | Detector methods and apparatus of cardiovascular system combining with variability guideline |
| CN102166119A (en) * | 2011-03-29 | 2011-08-31 | 东北大学 | Single-arm type electrocardio auxiliary fall detector |
| CN101524272B (en) * | 2008-03-04 | 2011-08-31 | 李平 | Digital pick-up device for body surface cardiac electric signals |
| CN102657525A (en) * | 2012-05-11 | 2012-09-12 | 季忠 | Nondestructive detection system and method of cardiac function |
| CN102920472A (en) * | 2012-12-05 | 2013-02-13 | 骆彦琳 | Portable heart sound collecting device and method |
| CN103239207A (en) * | 2013-04-17 | 2013-08-14 | 深圳市科曼医疗设备有限公司 | Monitor and monitor signal detecting method |
| CN103948376A (en) * | 2014-05-15 | 2014-07-30 | 武汉科技大学 | Wrist-type remote human pulse monitoring system |
| CN104571837A (en) * | 2013-10-12 | 2015-04-29 | 深圳先进技术研究院 | Method and system for realizing human-computer interaction |
| CN108030491A (en) * | 2018-01-03 | 2018-05-15 | 杭州心康科技有限公司 | Noise inhibiting wave filter network applied to intelligent ECG detection |
| CN111157675A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Detector and detection method |
| CN112472121A (en) * | 2020-11-30 | 2021-03-12 | 中山大学孙逸仙纪念医院 | In-ear objective tinnitus diagnosis device |
-
1999
- 1999-01-19 CN CN 99235200 patent/CN2363654Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299640C (en) * | 2004-11-18 | 2007-02-14 | 天津大学 | Bioelectrical detection circuit |
| CN100413464C (en) * | 2006-05-26 | 2008-08-27 | 中国人民解放军空军航空医学研究所 | Method and apparatus for continuously measuring blood pressure |
| CN100515327C (en) * | 2007-12-06 | 2009-07-22 | 山东大学 | Detector methods and apparatus of cardiovascular system combining with variability guideline |
| CN101524272B (en) * | 2008-03-04 | 2011-08-31 | 李平 | Digital pick-up device for body surface cardiac electric signals |
| CN102166119A (en) * | 2011-03-29 | 2011-08-31 | 东北大学 | Single-arm type electrocardio auxiliary fall detector |
| CN102166119B (en) * | 2011-03-29 | 2012-07-18 | 东北大学 | Single-arm type electrocardio auxiliary fall detector |
| CN102657525A (en) * | 2012-05-11 | 2012-09-12 | 季忠 | Nondestructive detection system and method of cardiac function |
| CN102920472A (en) * | 2012-12-05 | 2013-02-13 | 骆彦琳 | Portable heart sound collecting device and method |
| CN103239207A (en) * | 2013-04-17 | 2013-08-14 | 深圳市科曼医疗设备有限公司 | Monitor and monitor signal detecting method |
| CN104571837A (en) * | 2013-10-12 | 2015-04-29 | 深圳先进技术研究院 | Method and system for realizing human-computer interaction |
| CN104571837B (en) * | 2013-10-12 | 2018-03-30 | 深圳先进技术研究院 | A kind of method and system for realizing man-machine interaction |
| CN103948376A (en) * | 2014-05-15 | 2014-07-30 | 武汉科技大学 | Wrist-type remote human pulse monitoring system |
| CN108030491A (en) * | 2018-01-03 | 2018-05-15 | 杭州心康科技有限公司 | Noise inhibiting wave filter network applied to intelligent ECG detection |
| CN108030491B (en) * | 2018-01-03 | 2023-09-01 | 杭州心康科技有限公司 | Noise suppression filter network applied to electrocardio intelligent detection |
| CN111157675A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Detector and detection method |
| CN112472121A (en) * | 2020-11-30 | 2021-03-12 | 中山大学孙逸仙纪念医院 | In-ear objective tinnitus diagnosis device |
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