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70 results about "Korotkoff sounds" patented technology
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Korotkov sounds are the sounds that medical personnel listen for when they are taking blood pressure using a non-invasive procedure. They are named after Dr. Nikolai Korotkov, a Russian physician who discovered them in 1905, when he was working at the Imperial Medical Academy in St. Petersburg, the Russian Empire.
Electronic auscultation sphygmomanometer based on combination of Korotkoff sound method and oscillometric method
The invention relates to an electronic auscultation sphygmomanometer based on combination of a Korotkoff sound method and an oscillometric method, solving the following problems: the manual auscultation sphygmomanometer is not convenient to carry, and Korotkoff sound auscultation is not easy to operate and is easily affected by the environment. The electronic auscultation sphygmomanometer comprises a cuff with a bladder inside, a sound pickup, an atmospheric pressure sensor, a signal processing unit, an inflation / deflation unit, a human-machine interaction unit and a microprocessor, wherein the microprocessor controls the inflation / deflation unit to inflate or deflate the cuff; after the atmospheric pressure signal obtained by the atmospheric pressure sensor and the Korotkoff sound signal obtained by the sound pickup are processed by the signal processing unit, the microprocessor firstly works out the range of the blood pressure by the oscillometric method, then searches for the Korotkoff sound signal in the range by a thresholding method to obtain the final blood pressure and finally controls the human-machine interaction interface to display the result. The sphygmomanometer can simultaneously ensure stability and precision of the measuring result and can be used in the blood pressure measurement field.
Owner:HARBIN INST OF TECH
Noninvasive blood pressure measurement and monitoring device
InactiveUS20110208066A1Cumbersome to useSimple and but effective calibration methodStrain gaugeEvaluation of blood vesselsCritically illSurface acoustic wave
Measurement of blood pressure is one of the most common procedures done in a clinical and an ambulatory environment. It is usually done with a sphygmomanometer, where an inflatable cuff is attached to the arm of a patient and the systolic and diastolic pressures are determined, typically by listening to the Korotkoff sounds. Although this method is over 100 years old and widely used, it is well known that it has severe shortcomings.The present invention covers a novel device and method to continuously measure blood pressure using a noninvasive approach. A surface acoustic wave (SAW) pressure sensor is placed on a flexible substrate and placed on the wrist of a patient. This blood pressure sensing device communicates wirelessly with a monitor that is placed several meters away. The monitor can also be a wristwatch worn by the patient. The invention further encompasses a calibration procedure to convert the relative blood pressure values into absolute values.The main application for this novel device and method is in an intensive care environment where continuous monitoring of blood pressure on critically ill patients is important. Since the proposed method is inexpensive it can also be used by patients at home or even by healthy people (e.g. athletes). The reader system consists of an antenna and a standard computer (e.g. laptop) with signal processing software.
Owner:GNADINGER ALFRED PETER
System and method for controlling pressure in a surgical tourniquet
A system and method of controlling the pressure within a pressure cuff of a surgical tourniquet so as selectively to occlude blood flow within a portion of a limb of a patient, wherein a sensor determines when flow past the tourniquet is occurring so that corrective action may be taken, such as by increasing the pressure in the tourniquet or by notifying an operator of the flow past the tourniquet. The present invention may use an acoustic sensor to detect Korotkoff sounds indicating incipient blood flow past the tourniquet. When such signals are detected, the tourniquet controller may either incrementally increase the pressure in the tourniquet, or if a threshold would be exceeded by such an increase, signal an alarm indicative of the blood flow.
Owner:STRYKER CORP
Detection method with blood pressure monitor and korotkoff sound delaying and pulse wave conducting time signal generator
The present invention is blood pressure monitor detecting method and Korotkoff sound delaying and pulse wave conducting time signal generator. The detection method includes outputting several analog signals through digital synthesis on the computer stored data of respiration, cardioelectric, pulse wave and Korotkoff sound signals; setting computer controlled cuff pulse wave pressure generator, and determining the amplitudes and relations of the essential signals based on the relevant blood pressure detecting principle to form simulating human body signals essential for detecting blood pressure monitor and corresponding Korotkoff sound delaying and pulse wave conducting time signals; and feeding these signals to the blood pressure monitor to inspect the identity between the detection results of the blood pressure monitor and the set data of the signal generator.
Owner:浙江康莱特健康科技有限公司
Mammography Systems and Methods, Including Methods for Improving the Sensitivity and Specificity of the Computer-Assisted Detection (CAD) Process
InactiveUS20070223652A1Breast motionFlow of bloodStethoscopePatient positioning for diagnosticsSound detectionBlood flow
Provided are systems using compression devices for a mammography unit, and methods of using the same, for example, in conjunction with imaging of a patient's breast. The instant mammography units can comprise at least one x-ray transparent inflatable chamber for containing a fluid. When fluid is introduced into the chamber, at least one surface of the chamber expands, breast motion is limited, and the breast and its vasculature are compressed. Fluid may also be released from the chamber, and as the chamber deflates, blood flow to the breast is restored, producing Korotkoff sounds that may be detected by a sound detection device. The detected sounds may be used to assist a radiologist in identifying regions of interest on a mammogram, and additionally or alternatively may be used to a enhance a computer-assisted detection (CAD) process by contributing an additional data parameter.
Owner:GALKIN BENJAMIN M
Method and device for measuring systolic and diastolic blood pressure and heart rate
A method and a device for measuring blood pressure and heart rate is disclosed. Blood pressure signals corresponding to the Korotkoff sounds are detected using an array of primary acoustic sensors. A secondary acoustic sensor is used for detecting noise and vibrations. The signals provided by the primary acoustic sensors are then processed using adaptive linear beamforming and are combined into a single signal. The combined signal is then provided to an adaptive interferer canceller together with the signal of the secondary acoustic sensor for removing noise and vibration effects. Artifacts due to a patient's motion are removed in a following post-processing step. The post-processed signal and the pressure signal are then graphically displayed enabling a trained user to correct the automatic measurement, to decide whether a repeat measurement is necessary, and to quickly and accurately diagnose heart pulse patterns.
Owner:CANAMET CANADIAN NAT MEDICAL TECH
Mammography systems and methods, including methods utilizing breast sound comparision
InactiveUS20080240345A1Increase heightBreast motionStethoscopePatient positioning for diagnosticsSound detectionCompression device
Provided are systems using compression devices for a mammography unit, and methods of using the same, for example, in conjunction with imaging of a patient's breast. The instant mammography units can comprise at least one x-ray transparent inflatable chamber for containing a fluid. When fluid is introduced into the chamber, at least one surface of the chamber expands, breast motion is limited, and the breast and its vasculature are compressed. Fluid may also be released from the chamber, and as the chamber deflates, blood flow to the breast is restored, producing Korotkoff sounds that may be detected by a sound detection device. Sound data may be obtained with respect to both of a patient's breasts, and the sound data from a patient's first breast may be compared with the data obtained from the contralateral breast. The detected sounds, the comparison data, or both may be used to assist a radiologist in identifying regions of interest on a mammogram, and additionally or alternatively may be used to a enhance a computer-assisted detection (CAD) process by contributing additional data parameters.
Owner:GALKIN BENJAMIN M
Method for measuring blood pressure by double-mode electronic sphygmomanometer
ActiveCN102008298ARealize automatic identificationTo achieve an organic combinationEvaluation of blood vesselsAngiographyOscillometryBrachial artery
Owner:JIANGSU YUYUE MEDICAL EQUIP&SUPPLY CO LTD
Condenser microphone, microphone unit, and blood pressure gauge
ActiveUS20080089527A1High sensitivityHigh detection sensitivityEar treatmentStethoscopeInternal pressureEngineering
The present invention provides a condenser microphone capable of detecting small sounds (e.g., Korotkoff sounds) with high sensitivity even in environments with variations in pressure, such as cuff pressure. A condenser microphone (10) is disposed as an acoustic sensor for detecting Korotkoff sounds in a communication space reachable by the internal pressure of the cuff of a blood pressure gauge. In the condenser microphone, a diaphragm (13) and a backplate 14) are disposed in the interior of a housing (11), an aeration hole (30) is formed in a wall (11B) that blocks off the housing back surface, and a sound-absorbing element (20) having sound absorption characteristics with respect to a frequency band targeted for detection is disposed on the front surface of a housing (11).
Owner:NIPPON SEIMITSU SOKKI KK
Blood pressure gauge, and Korotkoff sound recognition method and device
The embodiment of the invention provides a blood pressure gauge, and a Korotkoff sound recognition method and device, and relates to the technical field of a medical appliance. On the basis of blood pressure measuring principle of a Korotkoff sound method, the Korotkoff sound of a measuring position can be obtained; the occurring moment and the disappearing moment of the Korotkoff sound are judged; the corresponding blood pressure value is determined; the influence of subjective judgment of an operator on the measuring value is avoided; and the measuring result accuracy is improved. The blood pressure gauge comprises a cuff, a pressure sensor, a sound sensor, a pressure regulator and a processor, wherein the cuff can be worn on the measuring position of the body; the pressure regulator regulates the pressure exerted to the measuring position by the cuff; the pressure sensor collects the pressure applied to the measuring position by the cuff; the sound sensor collects blood flow sound of the measuring position; and the processor is connected with the pressure sensor and the sound sensor, and obtains the pressure values corresponding to the occurring moment and the disappearing moment of the Korotkoff sound according to the collecting results of the pressure sensor and the sound sensor in the pressure change period for determining the blood pressure value.
Owner:BOE TECH GRP CO LTD
Mammography systems and methods, including methods for improving the sensitivity and specificity of the computer-assisted detection (CAD) process
Provided are systems using compression devices for a mammography unit, and methods of using the same, for example, in conjunction with imaging of a patient's breast. The instant mammography units can comprise at least one x-ray transparent inflatable chamber for containing a fluid. When fluid is introduced into the chamber, at least one surface of the chamber expands, breast motion is limited, and the breast and its vasculature are compressed. Fluid may also be released from the chamber, and as the chamber deflates, blood flow to the breast is restored, producing Korotkoff sounds that may be detected by a sound detection device. The detected sounds may be used to assist a radiologist in identifying regions of interest on a mammogram, and additionally or alternatively may be used to a enhance a computer-assisted detection (CAD) process by contributing an additional data parameter.
Owner:GALKIN BENJAMIN M
Electronic sphygmomanometer for medical purpose
InactiveCN101152079ASolve the problem of "mercury pollution"Accurate measurementAngiographyMeasuring/recording heart/pulse rateLiquid-crystal displayEngineering
A medical electronic sphygmomanometer using an electronic circuit to examine pressure and pulse sound, measures a blood pressure on the basis of a Korotkoff sound theory. The electronic sphygmomanometer solves the problems of the existing Korotkoff sound method that must use mercury for measuring blood pressure. The operational principle can be seen in the attached drawing. The attached drawing: 1: a single chip system board; 2: a liquid crystal display device; 3: a pulse sound sensor; 4: a pressure sensor; 5: a cuff air charging device; 6: a manual air charging ball; 7: a keypad matrix; 8: an air charging motor unit; 9: a standard medical stethoscope. The pressure sensor (4) is for sensing the pressure in the cuff air charging device (5); the pulse sound sensor is for sensing the pulse sound; the single chip system board (1) receives sensor data and displays results through the liquid crystal display device. The manual air charging ball (6) or the air charging motor unit (8) can be used for charging air to the cuff air charging device (5). The blood pressure can be measured according to the Korotkoff sound method. The standard medical stethoscope (9) can replace the pulse sound sensor (3), and the blood pressure can be measured by human.
Owner:辛学刚 +1
Sphygmomanometer
InactiveCN101264013AAccurate and reliable measurement resultsEasy to hearStethoscopeAngiographySTETHOSCOPE HEADSphygmomanometer
The invention relates to a sphygmomanometer, which comprises a cuff (1) with a gasbag, a inflation and deflation device (2), a pressure sensor (3), a digital display unit (4), a stethoscope head (5), a microphone (6), an audio processing circuit (7), a speaker (8) and a power supply, wherein, the inflation and deflation device (2) is communicated with the gasbag of the cuff, the pressure sensor (3) is used for detecting the pressure of the gasbag, the digital display unit (4) is connected with the pressure sensor (3) and used for displaying pressure value, the stethoscope head (5) is used for getting pulse sound, the microphone (6) is arranged in an sound induction tube of the stethoscope head (5) and used for receiving the pulse sounds get by the stethoscope head (5), the audio processing circuit (7) is connected with the microphone (6) and receives and linearly processes outputted audio signal from the microphone (6), the speaker (8) which is connected with the audio processing circuit (7) and is used for broadcasting the processed audio signal by the audio processing circuit (7), the power supply supplies power to the sphygmomanometer. The sphygmomanometer has the advantages of accurate and reliable measuring result, convenient hear korotkoff sounds and environmental protection without needing to use mercury.
Owner:YICHENG MEDICAL TECH
Human blood-pressure Korotkoff's high intensity image instrument
InactiveCN101385642AConvenient blood pressure measurementMeasurement results are indisputableAngiographyMedical recordEngineering
The invention discloses a human body blood pressure korotkoff sound intensity imager, which receives a series of input signals by CPU central processing system and converts the input signals to a series of output signals by digitalization program processing. The input signals comprises korotkoff sound analog signals, pressure signals and function selection operation signals; the output signals mainly comprises LCD image display of impulse intensity of korotkoff sound, sound / light indication of korotkoff sound, data interface as well as work indication and undervoltage indication. The beneficial effects of the human body blood pressure korotkoff sound intensity imager provided by the invention are that blood pressure measurement of korotkoff sound method of human becomes objective and transparent for the first time, the measurement result is more accurate, and the human body blood pressure measurement can also be stored as electric medical history for the first time. The invention can improve the medical level of clinics, and measurement on blood pressure of human body is more convenient, faster and more accurate.
Owner:SHANGDA MEDICAL INSTR & METER PLANT SHANGHAI
Mammography systems and methods, including methods utilizing breast sound comparison
InactiveUS7634049B2Breast motionFlow of bloodStethoscopePatient positioning for diagnosticsX-rayCompression device
Owner:GALKIN BENJAMIN M
Korotkoff-sound-based blood pressure measurement method and blood pressure measurement and cardiovascular system evaluation system
PendingCN110840429ASimple structureReduce distractionsCatheterDiagnostic recording/measuringHuman bodyArterial velocity
The invention discloses a korotkoff-sound-based blood pressure measurement method and a blood pressure measurement and cardiovascular system evaluation system, aiming to solve the problems of inaccurate blood pressure measurement and large influences of individual differences on measurement results in the prior art. Through combination of information detection at radial arteries with intelligent pressurization and pressure relief techniques, signal sources are stable, accurate capture of korotkoff sounds is ensured, and accordingly, the stability and reliability of the measurement results areimproved. Cardiovascular parameters of a human body can be calculated according to basic information of the human body and the measurement results, information of the human body, such as age, height,gender, weight and arm length, is entered, and a series of measured cardiac function parameters such as PWV (pulse wave velocity), heartbeat, heart output and blood viscosity are acquired through algorithm processing, so that an examinee is assisted in evaluating the state of his / her cardiovascular system.
Owner:云鸿创新信息科技(武汉)有限公司
Blood pressure measuring equipment of korotkoff sound stethoscopy and data processing method
InactiveCN101317755AAchieve mercury-freeEliminate the Mercury Pollution ProblemAngiographySignal conditioning circuitsAuscultation
The invention relates to a blood-pressure measuring device using the Korotkoff sound auscultation method and a data processing method thereof. The blood-pressure measuring device is provided with a stethoscope and a cuff connected with an air filling and discharging device and is characterized in that: an electronic pressure measuring and displaying device is provided. The structure of the blood-pressure measuring device is that: a pressure sensor connected with the cuff is provided and connected with a data processing controller by a signal conditioning circuit and an A / D switching circuit; the data processing controller is at least provided with a cuff pressure data output terminal and a cuff pressure change rate indication output terminal which are connected with an electronic display device. The method of the invention has the processes of automatically zeroing initial pressure, measuring and displaying air-discharging rate, automatically choosing and displaying the value closest to the measured pressure value, and so on. The invention can realize non-hydrargyrum of the blood-pressure measurement by virtue of the Korotkoff sound auscultation method, reduce pollution to the environment, enhance the precision and reliability of the blood-pressure measurement by an electronic pressure measuring system and reduce artificial errors.
Owner:曹德森 +2
A Korotkoff sound blood pressure measurement and signal analysis method based on wavelet denoising
InactiveCN102274014AImprove accuracyImprove work efficiencyEvaluation of blood vesselsAngiographyWavelet denoisingMean pressure
The invention discloses a Korotkoff sound blood pressure measurement and signal analysis method based on wavelet denoising. The method comprises the following steps: collecting the Korotkoff sound signal; storing the Korotkoff sound signal to a preprocessing module; The sound signal is denoised; the Korotkoff sound blood pressure signal is extracted from the denoised signal; and the systolic blood pressure, diastolic blood pressure and average pressure of the Korotkoff sound blood pressure signal are automatically detected. The present invention realizes the preprocessing and automatic detection of Korotkoff sound blood pressure measurement automatically at one time, and makes up for the deficiency in the traditional Korotkoff sound blood pressure measurement. The preprocessing, signal extraction and automatic detection can reduce the error caused by the subjective factors of doctors. Improve the accuracy, work efficiency and repeatability of Korotkoff sound blood pressure measurement, and provide a more accurate basis for the public's blood pressure measurement.
Owner:南京盟联信息科技股份有限公司
Blood pressure monitoring cuff with acoustic sensor
A system and method for a BP monitoring cuff that has an integrated acoustic sensor used to acquire Korotkoff sounds during partial occlusion of the arterial vessel.
Owner:SMITH ROBERT M +1
Method for measuring blood pressure with Korotkoff's sounds electronic measuring-aiding sphygmomanometer
InactiveCN101084827ARealize electronicA Simple Blood Pressure Diagnosis MethodAngiographySphygmomanometerBrachial artery
The invention relates to a method for measuring blood pressure with electrical korotkoff sound measuring assisted sphygmomanometer. The method comprises detecting korotkoff sound at the brachial artery with korotkoff sound probe and transporting the sound to a korotkoff sound controller through cable; recording, processing, and judging the korotkoff sound with the korotkoff sound controller, suggesting fetching systolic pressure and diastolic pressure by emitting rhythmic call isochronous with the pulse of the detectors according to medical diagnosis requirement (the first sound of the korotkoff sound and the last sound of the changed korotkoff sound); and fetching the systolic pressure at the first rhythmic call and diastolic pressure at the last rhythmic call. The invention strictly adopts korotkoff sound as detecting target for blood pressure measurement, can accurately and reliably transform weak korotkoff sound into isochronous rhythmic call hearable for human, and helps gauger fetch blood pressure measure value directly from matched pressometer, thereby realizing real electronization for measuring blood pressure with korotkoff sound.
Owner:SHANGDA MEDICAL INSTR & METER PLANT SHANGHAI
Method for determining sound intensity peak slopes of originating point and vanishing point of Korotkoff sounds
InactiveCN102085094ARealize automatic measurementAccurate measurementStethoscopeEvaluation of blood vesselsFiltrationPeak value
The invention relates an improved medical detection method, in particular to a method for determining sound intensity peak slopes of an originating point and a vanishing point of Korotkoff sounds. The method comprises the following steps: using an electronic sound pick-up to acquire the Korotkoff sounds, performing filtration and preliminary noise reduction, eliminating data which falls short of judgment basis of the Korotkoff sounds according to a program, selecting a set of complete Korotkoff sound spectrum, simultaneously ruling out interference signals again according to the judgment basis, and getting a background noise line which is nearly horizontal; and then crossing the slopes of front two peaks of the first phase and the slopes of back two peaks of the fourth phase of the Korotkoff sounds with the background noise line through the program, getting crossing points which are the theoretical originating point and the theoretical vanishing point of the Korotkoff sounds and finally determining corresponding systolic blood pressure and diastolic blood pressure according to the points. By adopting the method, the interferences of noise to the Korotkoff sounds can be almost completely ruled out, the blood pressure can be automatically measured through the Korotkoff sound method, gasbag decompression random error and error caused by a threshold of sound can also be eliminated, and the blood pressure can be accurately measured.
Owner:罗万前
Pressure sensor reading method
InactiveCN101972142AEasy to filterTo meet the requirement of stability of indicationEvaluation of blood vesselsAngiographyMicrocontrollerMeasurement precision
The invention discloses a pressure sensor reading method, which is a digital pressure sensor display method for a column display electronic sphygmomanometer. The rapid inflation, slow deflation and static measuring states of the sphygmomanometer are detected, low-pass filtering is performed on the static measuring state and dynamic states of rapid inflation and slow deflation are not processed, so that measuring accuracy can be ensured, reading shake is eliminated, dynamic following performance can be enhanced and Korotkoff sound reading is not affected. Components are arranged in a compact singlechip system. The method has the advantages of high measuring accuracy, stable reading, high readability, low cost and the like.
Owner:ZHEJIANG GONGSHANG UNIVERSITY
Universal sphygmomanometer simulator for live training and evaluation
A sphygmomanometer simulator for live training includes an upper arm cuff for a simulated patient; a rigid walled pressure vessel within the cuff; a manual inflator and manual release valve coupled to the rigid walled vessel to selectively increase and release the pressure within the pressure vessel; a pressure sensor coupled to the pressure vessel; a cuff controller receiving the pressure sensor measurements and controlling a speaker within the cuff to emit designated simulated Korotkoff sounds associated with a simulated blood pressure and with the pressure of the pressure vessel; a visual gauge controlled by the cuff controller and displaying a pressure associated with the pressure in the pressure vessel and simulated Korotkoff gauge bumps associated with the simulated blood pressure for the simulated patient; and a user controller coupled to the cuff controller for inputting the simulated blood pressure for the simulated patient.
Owner:PORT
Korotkoff sound quality identification and oscillography combined blood pressure measurement method and system
InactiveCN102008297AOvercome the shortcomings of limited storage capacity and the inability to save a large amount of measurement dataLong Term Health Care ServicesAngiographyOscillometryReal time services
The invention discloses a Korotkoff sound quality identification and oscillography combined blood pressure measurement method and a Korotkoff sound quality identification and oscillography combined blood pressure measurement system. The method comprises the following steps of: 1) selecting a blood pressure real-time measurement way; 2) starting the blood pressure real-time monitoring by a computer; 3) calculating a blood pressure value by a blood pressure measurement optimizing algorithm mixed with Korotkoff sound quality identification and oscillography, storing and displaying the measured data; 4) monitoring the data of a remote real-time service system; and 5) analyzing and processing an intelligent signal. The system is a blood pressure and heart rate data collecting device carried by a user and connected with a data processor; and the data processor is connected to a remote medical centre service platform via the internet. The invention can be used for measurement, storage and network transmission of blood pressures in families and hospitals so as to provide long-term stable health protection services for people to be measured.
Owner:SHANGHAI UNIV
Method for measuring blood pressure and sphygmomanometer implementing the method
The invention provides a blood pressure measurement method. The operator listens to the Korotkoff sound through the stethoscope to measure the blood pressure of the human body: the microprocessor automatically obtains the pulse signal and records the pressure value of the inflatable cuff corresponding to the pulse signal; the operator hears the snapping sound At the first sound, immediately press the button to control the microprocessor to automatically record the pressure of the inflatable cuff as the systolic pressure; when the operator hears the disappearing sound, immediately press the button to control the microprocessor to automatically record the pressure of the inflatable cuff as the diastolic pressure ; The above-mentioned pressure values are displayed on the display together as systolic blood pressure, diastolic blood pressure and pulse. The invention also relates to a sphygmomanometer implementing the method described above. The invention can not only satisfy the doctor's operating habits in blood pressure measurement, but also give full play to his professional skills, and can also achieve simple operation, convenient data recording, accurate reading of required values, simple structure, and convenient use.
Owner:浙江富美家健康科技有限公司
Detection method for blood pressure monitor with korotkoff sound delaying and pulse wave conducting time, and signal generator applying the same
The present invention is blood pressure monitor detecting method and Korotkoff sound delaying and pulse wave conducting time signal generator. The detection method includes outputting several analog signals through digital synthesis on the computer stored data of respiration, cardioelectric, pulse wave and Korotkoff sound signals; setting computer controlled cuff pulse wave pressure generator, and determining the amplitudes and relations of the essential signals based on the relevant blood pressure detecting principle to form simulating human body signals essential for detecting blood pressure monitor and corresponding Korotkoff sound delaying and pulse wave conducting time signals; and feeding these signals to the blood pressure monitor to inspect the identity between the detection results of the blood pressure monitor and the set data of the signal generator.
Owner:浙江康莱特健康科技有限公司
Korotkoff-sound blood pressure detecting device with pulse wave detecting function and detecting method of Korotkoff-sound blood pressure detecting device
InactiveCN109497981AKeep abreast of physical health statusScientific and effective trainingCatheterAngiographyMedicinePulse wave
The invention discloses a Korotkoff-sound blood pressure detecting device with a pulse wave detecting function and a detecting method of the Korotkoff-sound blood pressure detecting device. The Korotkoff-sound blood pressure detecting device comprises a pressure sensor and a Korotkoff sound pickup device, the pressure sensor is used for detecting pressure signals in a cuff and comprises a cuff pressure detecting circuit and a pulse wave acquiring and filtering circuit, and the Korotkoff sound pickup device is used for analyzing and processing Korotkoff sound and comprises a Korotkoff sound signal acquiring and processing circuit. The Korotkoff-sound blood pressure detecting device with the pulse wave detecting function and the detecting method of the Korotkoff-sound blood pressure detecting device have the advantages that pulse wave detection and analysis are provided when blood pressure is detected, a detecting report and advice can be given by combining with blood pressure information, and a user can acknowledge his own physical condition in time and carry on scientific and effective training.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI +1
Korotkoff sound electronic blood pressure measuring instrument as well as active noise-canceling pickup device, system and method for Korotkoff sound electronic blood pressure measuring instrument
ActiveCN110680298AEliminate pressure errorsEasy to placeAngiographySound producing devicesEnvironmental noiseSTETHOSCOPE HEAD
The invention discloses a Korotkoff sound electronic blood pressure measuring instrument as well as an active noise-canceling pickup device, system and method for the Korotkoff sound electronic bloodpressure measuring instrument. The pickup device comprises a cuff and an airbag, wherein the airbag is arranged in the cuff, and the middle of the airbag is connected with an air guide pipe; stethoscope heads are arranged between the cuff and the airbag and located on two sides of a joint of the air guide pipe, respectively, and a sound transducer is placed in each stethoscope head; any one stethoscope head is aligned to a brachial artery part of an upper arm, the sound transducer in the stethoscope head is used for picking up Korotkoff sounds and external interference sounds, and the rest stethoscope head is not located at the brachial artery part of the upper arm and can only pick up external interference sounds; and the two identical stethoscope heads acquire the same external interference sounds to generate two interference sound signals with the same phase, frequency and amplitude to offset each other so as to obtain effective Korotkoff sound signals. By the effective Korotkoff sounds, the electronic blood pressure measuring instrument can realize high-accuracy blood pressure measurement values, misdiagnosis of blood pressure measurement caused by environmental noise factors can be thoroughly eliminated, and the physical health of people is protected.
Owner:XUZHOU DOUBLE WIN MEDICAL EQUIP CO LTD
Electronic type blood pressure measuring equipment
An electronic blood pressure measuring device comprises a covering belt for pressurizing and decompressing the parts to be measured of users, a pressure sensor for sensing pulse pressure variation of the parts to be measured of human bodies, a selecting device for users to select to switch one of K4 and K5 Korotkoff sounds measure methods as the measuring condition, a microprocessor control unit for receiving the set measuring condition and controlling the pressure sensor to carry out measurement according to the set measuring condition and carrying out operation based on the sensed measurement value and a display device which is further controlled to display systolic pressure and diastolic pressure values of the measured blood pressure after the operation. The electronic blood pressure measuring device provided by the invention can facilitate the users to self select to switch K4 or K5 measure method to measure the blood pressure and increase the population for whom the electronic sphygmomanometer is suitable to measure the blood pressure.
Owner:HEALTH & LIFE CO LTD
Non-invasive blood pressure simulator based on the mechanism of Korotkoff sounds
InactiveCN103932692BAvoid distortionAvoid problems with poor detection reproducibilityAngiographyExtracorporeal circulationBlood pressure cuffs
The invention discloses a non-invasive blood pressure simulator based on a Korotkoff sound production mechanism. The non-invasive blood pressure simulator comprises a haemodynamic simulation device and an upper arm model, wherein the haemodynamic simulation device is used for producing a simulation blood flow adjustable in amplitude and frequency and producing a pulsating flow required by a brachial artery input of the upper arm model, and the upper arm model is wholly cylindrical and used for simulating the upper arm consisting of the human body brachial artery and muscles, is sleeved by a blood pressure cuff and produces vibration under the cuff pressure to form a Korotkoff sound signal. The non-invasive blood pressure simulator belongs to a extracorporeal circulation simulation system, achieves simulation of blood pressure and blood flow distribution in the aorta and brachial artery, achieves simulation of human body blood pressure non-invasive measuring process on the basis that the Korotkoff sound and oscillatory wave production mechanism is analyzed, and accordingly achieves metrological verification of an electronic sphygmomanometer.
Owner:BEIHANG UNIV +2
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