Abstract: It is an object to provide a blood pressure monitor, wherein the noise caused by the friction of overlapping parts of a cuff can be inhibited during automatic elevation in the cuff pressure, and reliability in the automatic elevation of cuff pressure can be significantly enhanced. A cuff (1) is used in a blood pressure monitor to measure a blood pressure in a rolled condition where one end of the cuff (1) is wound within the other end thereof, wherein a cushion member (6) made of a raised fabric (61) is provided in at least one of surfaces at one end and the other end of the cuff (1) which rub against each other.

Abstract: Improved apparatus and methods for non-invasively assessing one or more parameters associated with systems such as fluidic circulating systems (e.g., the circulatory system of a living organism). In a first aspect, an improved method of continuously measuring pressure from a compressible vessel is disclosed, wherein a substantially optimal level of compression for the vessel is achieved and maintained using dynamically applied dither perturbations (e.g., modulation) on the various axes associated with the vessel. In a second aspect, an improved apparatus and method are provided for monitoring hemodynamic parameters, such as blood pressure, in a continuous and non-invasive manner while operating under a single unifying scheme. One variant of this scheme using a simulated annealing (SA) type approach to determining and maintaining an optimal operating state.

Abstract: In device for side impact recognition in a vehicle, at least one pressure sensor system that produces a signal is provided in a side part of the vehicle, and an evaluation circuit is provided that recognizes a side impact as a function of the signal. In addition, a test device is provided for the at least one pressure sensor system, the at least one test device being configured such that the at least one test device oversamples the signal and then filters it in order to produce a test signal, the test device comparing the signal with a reference value and, as a function of this comparison, recognizing the operability of the at least one pressure sensor system.

Abstract: 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).

Abstract: This invention describes a method for dividing a substantial cycli cardiovascular signal into segments by determining the characteristics of said cyclic signal, wherein each cycle in said signal comprises at least two characteristic segments and wherein the method comprises the steps o identifying segments in a cycle based on prior knowledge of said segment characteristics and the step of verifying said identified segments based on a number of statistical parameters obtained from prior knowledge relating to said cyclic signal. Furthermore, the invention describes a system adapted to perform the above-described method.

Abstract: A non-invasive blood pressure measuring apparatus includes a host provided with a microprocessor coupled with an air pressure sensor. A pressurized cuff is an inflatable cuff with a gas tube connected with the air pressure sensor, and fastened to a body portion where user's artery blood flow can be blocked completely after air inflation. A pulse wave detector is fixed at a downstream position of the pressurized cuff according to the artery blood flow direction.

Abstract: A blood pressure measurement system includes an article of clothing, an occluding cuff, a blood pressure measurement unit, a first transmission module, and an operation module. The clothing includes tarpaulin. The occluding cuff is disposed at an inner side of the tarpaulin. The blood pressure measurement unit is disposed at the inner side of the tarpaulin for measuring blood pressure of a user to generate a blood pressure measurement result of the user, controlling a removable inflation module to inflate the occluding cuff, controlling a deflate valve to deflate the occluding cuff, and transmitting the blood pressure measurement result. The first transmission module is used for receiving the blood pressure measurement result. The operation module is coupled to the first transmission module for calculating diastolic blood pressure, systolic blood pressure, and/or pulses of the user according to the blood pressure measurement result.

Abstract: An ABPI measurement system includes two cuffs for each ankle and two cuffs for each arm of a patient. Each cuff has chambers. The four cuffs are applied to each limb (or finger or toe), each chamber is inflated simultaneously to a pressure until a Pneumo Arterial Plethysmography (PAPG) signal related to the arterial flow in the limb is detected at the chambers. The chambers are then simultaneously inflated until the PAPG signals are extinguished in each limb, the inflation of chambers continuing for 10 mmHg to 20 mmHg above that pressure. The chambers are then deflated and the pressure at which the PAPG signal returns in the first chamber is recorded for each limb and this value of the pressure is used to calculate the ABPI. The ABPI is displayed or sent to a remote site.

Abstract: A method and apparatus for continuous measurement of blood pressure, based on pulse transit time, which does not require any external calibration. This technique, referred to herein as the ‘composite technique’, is carried out with a body-won sensor that measures blood pressure and other vital signs, and wirelessly transmits them to a remote monitor. A network of disposable sensors, typically placed on the patient's right arm and chest, connect to the body sensor and measure a time-dependent electrical waveform, optical waveform, and pressure waveform. The disposable sensors typically include an armband that features an inflatable bladder coupled to a pressure sensor, at least 3 electrical sensors (e.g. electrodes), and an optical sensor (e.g., a light source and photodiode) attached to a wrist-worn band.

Abstract: A sphygmomanometer (1) stores a parameter for calculating a blood pressure value from a measurement value with clothes on from a measurement value with clothes off at a measurement site and the measurement value with clothes on in advance. When a with-clothes mode is selected with a button (3-4) in measuring the blood pressure, the blood pressure value is calculated using the parameter stored with respect to the measurement value.

Abstract: A blood pressure device including a compressible material can be placed around a limb of a patient (e.g. a band or cuff). Further, the blood pressure device can include a sleeve that, at least partially, covers the compressible material and is capable of compressing the compressible material to occlude a patient's blood vessel without inflating the sleeve. In some embodiments, the sleeve can compress the compressible material using a motor assembly. This motor assembly can include a motor and any additional mechanical devices that can be used to facilitate compressing the compressible material. For example, the motor assembly may include one or more of the following: a cable, a pulley, and a gear assembly, such as a worm drive or any other gear assembly that can facilitate compressing the compressible material.

Abstract: This invention provides a user with information by which the reliability of a measured blood pressure value can be determined. A blood pressure measurement device includes a cuff which presses a blood pressure measurement portion, a pressure control means for pressurizing or depressurizing the interior of the cuff, a pressure sensor which senses the internal pressure of the cuff, a pulse wave signal extracting means for extracting time-series data of a pulse wave signal superposed on the cuff internal pressure sensed by the pressure sensor, in the process in which the pressure control means pressurizes or depressurizes the cuff, and a display means for displaying a pulse waveform corresponding to a pulse wave signal of at least one period, together with the value of a cuff internal pressure corresponding to the pulse wave signal, based on the extracted pulse wave signal time-series data.

Abstract: Provided herein are implantable systems that include an implantable photoplethysmography (PPG) sensor, which can be used to obtain an arterial PPG waveform. In an embodiment, a metric of a terminal portion of an arterial PPG waveform is determined, and a metric of an initial portion of the arterial PPG waveform is determined, and a surrogate of mean arterial pressure is determined based on the metric of the terminal portion and the metric of the initial portion. In another embodiment, a surrogate of diastolic pressure is determined based on a metric of a terminal portion of an arterial PPG waveform. In a further embodiment, a surrogate of cardiac afterload is determined based on a metric of a terminal portion of an arterial PPG waveform.

Abstract: A blood pressure measurement bladder (50) has a predetermined amount of air introduced and sealed therein. A CPU (30) measures in advance the P-V property. The blood pressure measurement bladder (50) is wrapped around a measurement site. By exerting pressure from the outer side to the blood pressure measurement bladder (50), the internal pressure in the blood pressure measurement bladder (50) is increased to exert pressure on the blood vessel. During this process, the cuff pressure in the blood pressure measurement bladder (50) generated by volumetric change of the blood vessel by changing the pressure exerted from the outer side to the blood pressure measurement bladder (50), and the pressure pulse wave data are detected. By adding the cuff compliance property obtained by the P-V property that was measured in advance to the detected data as a correction value of the pressure pulse wave, blood pressure is calculated.

Abstract: Apparatus, method, and software for electrocardiogram-assisted non-invasive arterial blood pressure d stiffness measurement is disclosed including brachial cuff with flexible electrodes, control box with rigid electrodes, and associated hardware/software. Cuff is wrapped around upper arm while electrodes on device are touched with fingers of other hand. Device acquires simultaneous ECG/oscillometric data during cuff deflation. Processing unit determines ECG R-peak positions to isolate arterial pulses and calculate pulse transit time. Change in pulse amplitude as function of cuff pressure is used for constructing oscillometric envelope and calculating blood pressure using empirical coefficients. Change in pulse transit time as function of cuff pressure is used independently for constructing pulse transit time envelopes and finding blood pressure with/without empirical coefficients. Fusion algorithm combines results for robust blood pressure and vessel stiffness evaluation.

Abstract: A method and apparatus for indirect, quantitative estimation of beat-to-beat arterial blood pressure utilizing the individualized rectifying technique. A function TK=H(P) that describes the relationship between Korotkoff's sound delay time Tk and cuff pressure P is obtained by measuring the different cuff pressure P and corresponding Tk in the Korotkoff's sound sensor that is distal to the cuff. Keep the cuff pressure at a constant value Pm, the blood pressure variance can be calculated using the Korotkoff's sound delay time Tkm, according to the function Tk=H(P). The invention can measure the beat-to-beat artery blood pressure indirectly. The technique can be applied to obtain individual coefficient of regress equation for continuous arterial blood pressure measurement by the instantaneous blood pressure fluctuation, which make the rectifying technique more safe, effective and less erroneous. The technique makes the operation of noninvasive continuous blood pressure measurement for long time more practical.

Abstract: 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.

Abstract: A blood pressure measurement device accurately calculates an index useful in determining the degree of arteriosclerosis by accurately detecting a difference in time of appearance of a ejection wave and reflected wave in a blood pressure waveform. The device sets a threshold value based on an index that expresses a characteristic of the blood pressure waveform with respect to the point of appearance of the reflected wave in the blood pressure and estimates a rise point of the reflected wave by calculating an x-coordinate value of a point based on a maximum amplitude of the reflected wave and the threshold value. The device obtains the index of degree of arteriosclerosis by calculating a time difference in appearance between the ejection wave and the reflected wave based on the estimated rise point of the reflected wave.

Abstract: An electronic sphygmomanometer includes a cuff containing an air bladder, an air charger, an air discharger, a pressure sensor, a memory; a display, and CPU for executing programs stored in the memory and calculating a blood pressure value based on the pressure changes within the air bladder. The CPU further includes an estimation processing part for calculating an estimated blood pressure value based on the pressure change within the air bladder during the inflation of the air bladder at a first rate, a measurement processing part for measuring a blood pressure value based on the pressure change within the air bladder during the deflation of the air bladder at a second rate, and a determination processing part for comparing the estimated blood pressure value with the reference blood pressure value and determining whether the estimated blood pressure value is within a predetermined range from the reference blood pressure value.

Abstract: The present invention relates to the field of non- invasive blood pressure (NIBP) monitoring systems and particularly to a system that allows the identification of other components of the system via coding elements that are readable without the need for placement of this system components to the body of a patient.

Abstract: A blood pressure information measurement device includes light emitting elements and light receiving elements as a plurality of pairs of first and second sensors in a cuff. While the cuff pressure is increased, combinations of the plurality of pairs of the light emitting elements and the light receiving elements are switched, and volume pulse waves are obtained from each of the combinations. After increasing the cuff pressure, for each of the volume pulse waves corresponding to the combinations, a specific volume value at a point where the amount of volume change becomes maximal is extracted. Thereafter, based on values corresponding to the maximum and minimum blood pressure and the specific volume value, the sensors for measurement are determined.

Abstract: The system and method for measuring arterial pressure by its effects consists of a six-stage procedure and three devices; the procedure to indirectly measure diastolic arterial pressure controls the tasks of a first device applying a measured gradual external contact force, a second sensor device of arterial that records arterial expression, and a third device which is a device to measure and detect the arterial cycle diastolic and systolic period in order to provide the diastolic arterial pressure value using an indirect method. Additionally, systolic arterial pressure is measured with no overpressure due to heartbeats produced after arterial occlusion.

Abstract: Average blood pressure data of a morning time zone of every week and average blood pressure data of a night time zone of every week calculated by an average calculation portion are stored in a memory by performing blood pressure measurement. An every-week processing portion alternately switches and displays the average blood pressure data of the morning time zone and the average blood pressure data of the night time zone read from the memory based on an instruction input through an operation unit on a display unit every three seconds, or the like.

Abstract: A resistor element is arranged between an input terminal and a node. A switch element is arranged between the node and a ground voltage, and is conducted according to a voltage level of the node. A resistor element is arranged between the nodes. A resistor element is arranged between the node and one side of the input node of an NOR circuit. A capacitor is connected between the nodes. The input node of the NOR circuit is connected to the node through the resistor element and a ground voltage. The input node of an NOR circuit is connected to an output node of the NOR circuit and the ground voltage. The input node of the NOR circuit is connected to the node and the ground voltage.

Abstract: A blood pressure measuring apparatus which measures a blood pressure in a step of gradually changing a cuff pressure adapted to press an artery, includes: a pulse wave detecting unit; a pulse wave interval measuring unit; a waveform information storing unit; a change trend calculating unit; a waveform information comparing unit; and a determining unit which, when first two of the pulse waves, which are successively detected at different cuff pressures, satisfy a predetermined condition: that a magnitude relationship between the amplitudes of the first two of the pulse waves is consistent with the change trend of the first two of the pulse waves; that the pulse wave interval between the first two of the pulse waves is within a predetermined range; and that the waveform information of the first two of the pulse waves approximately coincide with each other, determines that the amplitude of latter one of the first two of the pulse waves is to be used for calculating the blood pressure value.

Abstract: A blood pressure information measurement device includes a servo control unit for performing a servo control of a pressure adjustment unit so that a value of an arterial volume signal matches a control target value and a fluctuation detection unit for detecting rapid fluctuation of the arterial volume signal at an initial stage during a period of the servo control. The fluctuation detection unit determines that the rapid fluctuation occurred when a control deviation representing a level of the arterial volume signal having the control target value as a reference becomes greater than or equal to a predetermined magnification of a reference deviation. The blood pressure information measurement device further includes an adjustment processing unit for adjusting a control amount of the pressure adjustment unit by the servo control unit so that an excessive response is not made when the rapid fluctuation is detected by the fluctuation detection unit.

Abstract: A calibration device is connected to a sphygmomanometer with an air tube and a communication cable. When connection is detected, the calibration device closes a valve of the sphygmomanometer and its valve and applies pressure to the air tube to measure the pressure, and determines the air leakage of the sphygmomanometer based on the pressure change with an air leakage determination unit. The calibration device causes a pressure sensor of the sphygmomanometer to measure the inner pressure, receives the measurement result with the communication I/F, and determines the result of the equipment difference test of the sphygmomanometer based on a difference between the applied pressure and the inner pressure with an equipment difference determination unit. If determined that the equipment difference test is failure, a control signal is output to the sphygmomanometer to calibrate the output value of the pressure sensor in the calibration unit.

Abstract: A method for determining a calibrated aortic pressure waveform from a brachial cuff waveform involves the use of one or more generalized transfer functions. The one or more generalized transfer functions are specific for predetermined brachial cuff pressure ranges, such as below diastolic pressure, between diastolic and systolic pressure, and above systolic pressure. The brachial cuff is inflated to a pressure within the pressure range appropriate for the generalized transfer function to be applied to the brachial cuff waveform to generate the aortic pressure waveform. In some circumstances, it may be necessary to use a calibration transfer function to generate a calibrated aortic waveform. In other circumstances, the calibration transfer function is not necessary.

Abstract: A non-invasive blood pressure monitoring system is disclosed herein. The non-invasive blood pressure monitoring system includes a pressure cuff comprising a resistive portion and a conductive portion aligned with the resistive portion. The non-invasive blood pressure monitoring system also includes a controller operatively connected to the pressure cuff. The controller is adapted to estimate the circumference of the pressure cuff based on the position of the conductive portion relative to the resistive portion.

Abstract: The invention relates to a blood pressure measurement device (10) comprising a monitor (9) connectable to a front-end unit (2), which may be connectable to an inflatable body (1), for example a finger cuff. The frontend (2) may comprise necessary electrical wiring W and a gas conduit C necessary for functioning of the device (10). The frontend may preferably be arranged to perform an actual blood pressure measurement. The blood pressure measuring device (10) is provided with a frontend (2) wherein a gas chamber (4a) is provided in the second portion II of the gas conduit C, preferably directly before the control valve (4) with respect to a direction of the stream towards the inflatable body (1). The invention further relates to an inflatable body, a computer program product and a front end.

Abstract: An electronic sphygmomanometer includes a cuff to be attached to a blood pressure measurement site, a pump and a valve for adjusting a pressure to apply to the cuff, a pressure sensor for detecting a pressure of the cuff, a central processing unit (CPU) for calculating a blood pressure value from the cuff pressure, a memory for recording the blood pressure value, and an operation unit for carrying out a blood pressure measurement. The CPU corrects the calculated blood pressure value based on separately acquired correction information and acquires attachment condition information of the cuff as the correction information. When the attachment condition information is acquired as the correction information, the CPU corrects a blood pressure calculation parameter based on the attachment condition information.

Abstract: An electronic sphygmomanometer includes a pressure control unit configured to conduct pressurization control on a cuff (pressure control toward a specific direction) and acquire a cuff pressure signal at a time of the pressurization control to thereby measure a pressure pulse wave; a displacement decision unit configured to decide whether displacement has occurred between a position of the cuff and a virtual position of the heart based on an output from an angle sensor when the pressurization control is being conducted; and a return processing unit configured to, when it is decided that displacement has occurred, stop the pressurization control and conduct depressurization control on the cuff to thereby return an intra-cuff pressure to a specific pressure value that denotes a pressure value before the occurrence of the displacement. The pressure control unit resumes the pressurization control after processing by the return processing unit.

Abstract: A power supply unit of an electronic sphygmomanometer includes a dry cell as a primary battery, a rechargeable battery as a secondary battery, and a power supply control circuit. A voltage detector detects a voltage (characteristic value) of the rechargeable battery, and a voltage detector detects the voltage of the dry cell. A switching control unit performs switching control of the dry cell and the rechargeable battery based on a detection result by the voltage detectors.

Abstract: An electronic sphygmomanometer determines whether a position of a measurement site falls within a proper range, and notifies whether the position of the measurement site falls within the proper range. When determination is made that a time in which the position of the measurement site falls within the proper range is not less than a predetermined time (for example, 2 seconds), measurement of a blood pressure is automatically started. When determination is made that a time in which the position of the measurement site is out of the proper range is not less than a predetermined time (for example, 5 seconds), the measurement of the blood pressure is started. Further, whether the position of the measurement site falls within the proper range is notified while correlated with the measurement result.

Abstract: A system and method for processing oscillometric data from a plurality of pressure steps to determine the blood pressure of a patient. A heart rate monitor connected to the patient acquires the patient's heart rate. A time-to-frequency domain converter receives oscillometric data and converts the oscillometric data into the frequency domain. Based upon the calculated heart rate, the system and method filters the frequency domain oscillometric signal with pass bands centered at the fundamental frequency and at least one fundamental frequency. The energy of the frequency domain signal within the pass bands is compared to at least a portion of the energy of the frequency domain oscillometric signal outside of the pass bands. Based upon the comparison, the signal determines whether the signal at the current pressure step should be utilized in calculating the blood pressure of the patient.

Abstract: With a measurement device attached to the upper arm as a master, a measurement device, which is a slave, attached to the ankle is controlled to measure a pulse wave in synchronization. The measurement device on the master side obtains a measurement result from the measurement device on the slave side, and detects the appearance time difference of the pulse wave waveforms by synchronizing the pulse waves measured in both measurement devices, thereby calculating a Pulse Wave Velocity as the index of arterial sclerosis.

Abstract: An electronic sphygmomanometer acquires a patient ID and recommended site information read from an ID card before measurement. The recommended site indicating the site to be attached to a cuff of a left site or a right site is thereby specified for every person to be measured (patient ID). Thereafter, the site to be attached to the cuff is guided by notifying the specified recommended site to the person to be measured.

Abstract: A sphygmomanometer cuff is provided with an upper arm support stand arranged to support an upper arm, and an arm band arranged to be wound around the upper arm. The upper arm support stand includes an upper arm support surface arranged to support the upper arm while the upper arm is placed thereon, a winding mechanism arranged to pull one end of the arm band in the winding direction so as to wind a portion of the arm band close to the one end, and a hook arranged to engage a portion of the arm band close to another end pulled out from the winding mechanism against a pulling force applied by the winding mechanism. The upper arm supported on the upper arm support stand is tightened by the upper arm support surface and the portion of the arm band pulled out from the winding mechanism in a state where the portion of the arm band close to the other end is engaged with the hook.

Abstract: The invention provides a high-accuracy hemadynamometer and method of using the same. A main air tank imposes pressure upon a wrist or an arm of a user. There is a valve between an auxiliary air tank and the main air tank to release air in the auxiliary air tank to the main air tank. A pressurized device increases pressure of the main air tank and the auxiliary air tank to impose pressure upon the wrist or the arm of the user. A pressure release device is set on the main air tank. A pressure detector detects pressure of the main air tank and outputs a pressure value. A heartbeat detector detects the oppression of the blood of the artery of the user and outputs a pulsation signal. A controller controls the pressure release device to release air in the main air tank and activates the valve based on the pulsation signal for releasing air in the auxiliary air tank to the main air tank.

Abstract: A wireless mobile phone is equipped to operate in an unauthenticated and an authenticated mode of operation, depending on whether a user has been authenticated. In one embodiment, the wireless mobile phone includes a number of sensors to enable a user's heart beat profile to be captured and be used for authentication. In one embodiment, authentication is performed by comparing the real time captured heart beat profile against a reference heart beat profile. In one embodiment, the reference heart profile is retrieved from an identity card. The wireless mobile phone further includes a reader to retrieve the reference heart beat profile from the identity card.

Abstract: In a blood pressure measurement device, a force acts on one end side and the other end side of a cuff main body in a direction where an inner diameter of a tubular form is further reduced, so that a rotation shaft rotates in a clockwise direction thus simultaneously moving the one end side and the other end side of the cuff main body. As a result, the inner diameter of the tubular form of the cuff main body can be reduced, and the cuff main body can be easily and rapidly wrapped around the upper arm with only the pushing task using one hand. Thus, the blood pressure measurement device provides a simple device configuration that enables the cuff to be easily wrapped around the measurement target site even for those with crippled hands.

Abstract: During a period of servo control, an artery volume of a peripheral site is detected by an artery volume sensor arranged at a peripheral site (site on the peripheral side than a measurement site) of a person to be measured. If an amount of change in the artery volume of the peripheral site or a value of the artery volume is greater than or equal to a predetermined ratio of a reference value at the beginning of the measurement, the servo control and a blood pressure determination process are continued. When detected thereafter that the amount of change in the artery volume of the peripheral site or the value of the artery volume is smaller than the predetermined ratio of the reference value at the beginning of the measurement, the measurement is stopped at the relevant time point.

Abstract: A blood pressure information measurement device instantaneously changes cuff pressure in a specified pressure section in order to detect a control target value in artery volume constant control. An artery volume signal is detected in that period, and an inflection point of the detected artery volume signal is detected by performing differentiation processing or the like. The inflection point of the detected artery volume signal is fixed as the control target value.

Abstract: Many people do not have a physical feeling for what normal and abnormal blood pressure levels mean in relation to the forces exerted on the heart and blood vessels. A blood pressure simulation apparatus provides human subjects a means to physically feel simulated blood pressure levels through tactile feedback. Both normal and abnormal blood pressure cycles are simulated. Interfacing of the apparatus to an electronic blood pressure monitor is provided.

Abstract: A blood pressure measurement control method for controlling the measurement of a blood pressure according to an oscillometric method has the steps of determining whether to employ a depressurization measurement method or a pressurization measurement method to measure the blood pressure according to a person to be measured, performing a measurement process of the blood pressure in a depressurization process when determined to measure the blood pressure with the depressurization measurement method, performing a measurement process of the blood pressure in a pressurization process when determined to measure the blood pressure with the pressurization measurement method, and outputting the measured blood pressure value.

Abstract: Disclosed herein is a system for monitoring a patient that includes a cuff configured to inflate to at least partially occlude an artery of the patient and a cuff controller configured to inflate the cuff during a dynamic phase and generally maintain inflation of the cuff at about a target pressure during a static phase. The system also includes a sensor configured to receive a signal associated with the at least partially occluded artery and generate an output signal based on the received signal, and a cuff control module configured to determine the target pressure during the dynamic phase and based on the output signal, and control the cuff controller during the dynamic phase and the static phase.

Abstract: An electronic sphygmomanometer has a cuff to be attached to a measurement site, a pressurization/depressurization unit for adjusting a pressure to be applied to the cuff, a pressure detection unit including a plurality of pressure sensors, for detecting cuff pressures in the cuff based on pressure information output from the plurality of pressure sensors, and a blood pressure calculating unit for calculating a blood pressure based on a change in the cuff pressures detected by the pressure detection unit. Blood pressure measurement and detection of abnormality on the plurality of pressure sensors are carried out based on the cuff pressures respectively corresponding to the plurality of pressure sensors detected according to the pieces of pressure information output from the plurality of pressure sensors.

Abstract: A system and method of enhancing a blood pressure signal is disclosed. The volume of an artery in a finger is measured by a photo-plesthysmographic (PPG) system, which produces a PPG signal. This PPG system is placed inside a cuff, and the cuff pressure is controlled by the PPG signal. The portion or component of the PPG signal having a frequency higher than a predefined threshold frequency is then modified or enhanced, such as by multiplying the high frequency component by a calibration factor. A blood pressure signal is then calculated using the cuff pressure and the modified PPG signal. A blood pressure contour curve may then be generated, and a variety of parameters may be calculated using the curve.

Abstract: A digital sphygmomanometer comprises a manual pump (22) for inflating an inflatable cuff (24), a pressure sensor (26) for measuring the pressure in said inflatable cuff (24), a digital display (34) for displaying the pressure in said inflatable cuff (24), and a MPU (32) for processing the pressure signal and for controlling the display of the pressure signal. A method for a digital sphygmomanometer comprises procedures embedded in said MPU (32) for detecting the phases of the blood pressure measurement process and for display the pressure in said inflatable cuff (24) in different ways to allow displayed pressure values staying long enough for operator to read while ensuring sufficient display accuracy for the purpose of accurate blood pressure measurement.

Abstract: A blood pressure monitor for measuring a blood pressure of a human body includes a main body, a connecting mechanism, and a sensing unit. The main body surrounds the human body and has a first end portion and a second end portion. The connecting mechanism connects the first end portion with the second end portion at a first position or a second position. When the first end portion and the second end portion are connected at the first position, the human body surrounded thereby has a first circumference, and when the first end portion and the second end portion are connected at the second position, the human body surrounded thereby has a second circumference. The sensing unit, disposed on the body, detects the first position or the second position to determine the first circumference or the second circumference respectively.