Class / Patent application number | Description | Number of patent applications / Date published |
600494000 | Pulse-induced pressure fluctuation in occluder generates electric signal | 58 |
20080243008 | Blood Pressure Measuring Apparatus and Blood Pressure Measuring Method - To provide a technique which makes it possible to obtain a proper pulse wave signal for high-accuracy blood pressure measurements, thereby saving the trouble of taking measurements repeatedly and reducing a physical burden imposed on the user by cuff pressure. A blood pressure measuring apparatus includes a cuff which is attached to and around an external ear; a first pulse wave detector and a second pulse wave detector which detect a pulse wave in a part squeezed by the cuff and which are affected differently from each other by a characteristic of body movements; a body movement detecting means which detects the characteristic of body movements; a pulse wave selecting means which selects a pulse wave detected by one of the first pulse wave detector and the second pulse wave detector based on the characteristic of body movements detected by the body movement detecting means; and a blood pressure value deriving means which derives a blood pressure value based on the pulse wave selected by the pulse wave selecting means. | 10-02-2008 |
20080243009 | METHOD OF CONTROLLING INFLATION OF A CUFF IN BLOOD PRESSURE DETERMINATION - The present application discloses a method of calculating an initial inflation pressure during a blood pressure determination using an NIB system. The cuff provided with the system is inflated towards a default initial inflation pressure and a plurality of oscillometric pulses are obtained during inflation. A quick systolic pressure is estimated from a pre-defined function having a physiologically- expected shape of an oscillometric envelope fitted to oscillometric data obtained during the inflation. In an embodiment, the parameters within the function are specifically found by fitting a plurality of oscillometric pulse amplitudes along with their corresponding cuff pressures obtained during inflation to the pre-defined function. The cuff is inflated up to a calculated initial inflation pressure, which is found from the estimated quick systolic pressure. After the cuff is brought to the initial inflation pressure, deflation is begun for determining the actual systolic and diastolic pressures for output to a user. | 10-02-2008 |
20080300495 | Method of eliminating vibration interferences of a sphygmomanometer for measuring blood pressure - A method of eliminating vibration interferences of a sphygmomanometer for measuring blood pressure uses a pressure sensor and an acceleration sensor to measure a voltage-time variation waveform of blood pressure detected by an acceleration sensor. An interference variation waveform is subtracted from the measured voltage-time variation waveform to calculate the correct blood pressure value. During measurement, the acceleration sensor detects and determines whether the vibration interference falls within a predetermined allowable range; if yes, a warning signal is issued to remind users to measure blood pressure again; if no, the acceleration sensor detects an interference variation waveform. The inference variation waveform obtained by a conversion function is subtracted from the voltage-time variation waveform when the blood pressure measurement is affected by external vibration interferences, and the original voltage-time variation waveform not affected by vibration interferences is restored, so as to measure a correct blood pressure value. | 12-04-2008 |
20080319328 | FEMORAL COMPRESSION DEVICE - A femoral compression device ( | 12-25-2008 |
20080319329 | Manual-driven inflation-powered electronic blood pressure measuring apparatus - A manual-driven inflation-powered electronic blood pressure measuring apparatus includes an inflation unit to generate pressurized air by a user through hand squeezing, a power generation unit to receive the pressurized air to generate and output electric power, an electronic blood pressure measurement unit to receive the electric power output from the power generation unit and the pressurized air from the inflation unit to inflate an air pouch, and a sensor to detect a person's blood pressure signals in cooperation with the inflation pouch, and outputs a measurement result through an output unit. | 12-25-2008 |
20090043214 | SPHYGMOMANOMETER CAPABLE OF KNOWING VARIATION IN BLOOD PRESSURE VALUE - In a sphygmomanometer ( | 02-12-2009 |
20090076398 | Continuous Non-Invasive Blood Pressure Measurement Apparatus and Methods Providing Automatic Recalibration - A blood pressure measurement system is configured to perform a calibration automatically when a calibration condition is satisfied. The calibration condition is based upon one or more parameters of pulse waves of a subject. The parameters may include pulse wave area; a time difference between systolic peak and reflected wave peak or dichrotic notch in the pulse wave and a shape of at least a portion of the pulse wave. | 03-19-2009 |
20090105600 | Impedance based device for non-invasive measurement of blood pressure and ankle-brachial index - A device for non-invasive measurement of blood pressure includes a blood pressure cuff, a plethysmographic electrode for acquiring an impedance plethysmogram distal to the cuff and a processing device to inflate and deflate the cuff generate the impedance plethysmogram and to determine the systolic and diastolic blood pressures. The device can be used to measure systolic or diastolic blood pressure or both. It can also be used to take ankle-brachial measurements. An autocorrelation technique can be used to correct noise. | 04-23-2009 |
20090112104 | BLOOD PRESSURE CALCULATION METHOD FOR NON-INVASIVE BLOOD PRESSURE MEASUREMENT APPARATUS - A method of calculating a blood pressure, includes: providing a non-invasive blood pressure measurement apparatus which includes a cuff being inflatable and deflatable and adapted to be fitted on a part of a living body and in which a plurality of calculation methods each of which has priority in accordance with a type of noise information are set; detecting, by the cuff, a signal waveform representing a change in an oscillation amplitude and a change in a cuff pressure; determining the type of the noise information contained in the detected signal waveform; deciding the blood pressure from at least one candidate value for the blood pressure, which is calculated by one of the calculation methods that has the priority with respect to the determined type of the noise information; and displaying the decided blood pressure, | 04-30-2009 |
20090149763 | ESTIMATION OF PRESSURE AT REMOTE SITE BY BRACHIAL OSCILLOMETRIC WAVE FROM ANALYSIS - The present invention relates to a device and a method for estimating central systolic blood pressure based on oscillometric signals from brachial artery by the use of a pressure cuff. | 06-11-2009 |
20090287098 | Non-invasive blood pressure measurement safety protection method and apparatus - The present invention discloses a non-invasive blood pressure measurement apparatus and a safety protection method. In addition to a main pressure measurement circuit and a main microprocessor circuit, the measurement apparatus also includes an independently disposed assist pressure measurement circuit and an independently disposed assist microprocessor circuit. In normal measurement, the assist microprocessor circuit periodically samples a cuff pressure via the assist pressure measurement circuit, and compares the measured cuff pressure with a specified overpressure protection value, and if the cuff pressure exceeds the specified overpressure protection value, the assist microprocessor circuit outputs a control signal to open a deflation valve until the pressure falls to below the safety pressure. Compared with the prior art, the method for overpressure protection of the present invention is more direct and has higher accuracy of decision, leading to higher reliability of the overpressure protection and higher safety of the measurement apparatus. | 11-19-2009 |
20090326392 | METHOD AND SYSTEM FOR NON-INVASIVE BLOOD PRESSURE ESTIMATION - A method for non-invasively estimating blood pressure is disclosed herein. The method includes inflating a cuff and collecting first oscillation amplitude data at a first plurality of cuff pressure levels while inflating the cuff. The method includes identifying an artifact in the first oscillation amplitude data. The method includes identifying a specific cuff pressure level where the artifact occurs and deflating the cuff to the specific cuff pressure level. The method includes collecting second oscillation amplitude data at the specific cuff pressure level and estimating a blood pressure parameter based on both the first oscillation amplitude data and the second oscillation amplitude data. A non-invasive blood pressure system is also disclosed. | 12-31-2009 |
20090326393 | Systems and Methods for Non-Invasive Continuous Blood Pressure Determination - According to some embodiments, systems and methods are provided for non-invasive continuous blood pressure determination. In some embodiments, a PPG signal is received and locations of pulses within the PPG signal are identified. An area within a particular pulse is measured. The area may be of just the upstroke, downstroke or the entire pulse. The area may be measured relative to a time-domain axis or a baseline of the pulse. The pulse may be split into multiple sections and the area of each section may be measured. The area of one portion of the pulse may correspond to systolic blood pressure while the area of another portion may correspond to diastolic blood pressure. Empirical data may be used to determine blood pressure from the measured area by applying calibration data measured by a suitable device. | 12-31-2009 |
20100063406 | BLOOD PRESSURE MEASUREMENT DEVICE FOR MESURING BLOOD PRESSURE WITH CLOTHES ON - A sphygmomanometer ( | 03-11-2010 |
20100069764 | BLOOD PRESSURE MEASUREMENT APPARATUS - The present invention relates to a blood pressure measurement apparatus comprising: an input unit where at least one value selected from the maximum applied pressure, which is the applied pressure at which the maximum pulse pressure is attained during the pulse pressure measurement at the measurement part, the maximum pulse pressure, which is the pulse pressure at the maximum applied pressure, the depth of blood vessel at the measurement part measured by a pressure sensor, the elasticity of skin tissue at the measurement part and the elasticity of blood vessel at the measurement part is inputted; and a mean arterial press calculation unit where the mean arterial pressure is calculated from the input values of the maximum applied pressure, the depth of blood vessel and the elasticity of skin tissue. The present invention offers more effective and reliable blood pressure measurement apparatus. | 03-18-2010 |
20100076327 | BLOOD PRESSURE METER - A blood pressure meter includes: a cuff; a case main body that has a cuff storing recess capable of storing the cuff at a back-side position of the case main body; a main block that is provided in the case main body at a front-side position and that has a display unit and an operation unit; a cover that is joined to a portion on the back side of the case main body to open and close freely by way of a hinge and that can cover the upper portion the case main body; and a lift-up portion that can lift the cuff upward from the cuff storing recess. | 03-25-2010 |
20100106031 | BLOOD PRESSURE MEASURING CUFF, BLOOD PRESSURE MEASURING APPARATUS, BLOOD PRESSURE MEASURING METHOD, CUFF, AND CUFF MANUFACTURING METHOD - Provided are a blood pressure measuring apparatus capable of effectively eliminating the influence which the volume change in an upstream portion of an occluding cuff has on a pulse wave detection cuff in an oscillometric double-cuff system, increasing the S/N ratio of systolic blood pressure detection, and accurately measuring the blood pressure with an inexpensive arrangement, a cuff, and a blood pressure measuring method. The apparatus includes a first pipe ( | 04-29-2010 |
20100174202 | METHOD AND SYSTEM FOR COMBINING OSCILLOMETRIC BLOOD PRESSURE ENVELOPE DATA OBTAINED FROM DIFFERENT SIGNAL PROCESSING PATHS - A blood pressure measurement system that utilizes a non-invasive blood pressure (NIBP) monitor having a blood pressure cuff and pressure transducer. The measurement system provides a plurality of separate processing techniques that each receive a plurality of oscillometric waveform sample values generated using the pressure transducer. Each of the processing techniques separately generates a set of envelope points based upon the oscillometric data values. The sets of envelope points are appropriately scaled such that the sets of scaled envelope points are combined with each other to create a set of combined, scaled envelope points. Various different methods can be used to scale the sets of envelope points prior to the combination of the scaled envelope points. Based upon the combination of scaled envelope points, the blood pressure is calculated and displayed by the NIBP monitor. | 07-08-2010 |
20100249616 | NIBP TARGET INFLATION PRESSURE AUTOMATION USING DERIVED SPO2 SIGNALS - A method and system for operating a non-invasive blood pressure monitor that utilizes an SpO | 09-30-2010 |
20110054331 | APPARATUS AND METHOD FOR MEASURING BLOOD PRESSURE WITH MOTION ARTIFACTS ELIMINATION - The invention discloses an apparatus and method for measuring a blood pressure. In particular, the method and apparatus according to the invention are capable of eliminating motion artifacts induced by, for example, talking, irregular breathing, frequent swallowing, coughing, shaking, and so on motions of a subject. The method and apparatus according to the invention utilizes a set of fuzzy logic rules and a curve-fitting way to eliminate the motion artifacts. | 03-03-2011 |
20110160599 | DEVICE FOR MEASURING INFORMATION REGARDING BLOOD PRESSURE - A measurement device includes an air bag on a peripheral side, an air bag on a central side, and an air bag positioned therebetween. During blood pressure measurement, the air bags integrally behave, and the blood pressure is measured from the change in inner pressure thereof. During pulse wave measurement, the inner pressure of the air bag on the peripheral side is maintained to higher than or equal to the systolic blood pressure, and the measurement site is avascularized. The inner pressure of the air bag on the central side is maintained to the pressure near the blood pressure value, and the pulse wave is measured from the change in inner pressure thereof. The inner pressure of the air bag positioned therebetween is opened to atmospheric pressure, and the vibration of the air bag on the central side is prevented from propagating to the air bag on the peripheral side. | 06-30-2011 |
20110166461 | EQUIPMENT AND METHOD FOR CONTINUALLY MEASURING THE BLOOD PRESSURE FOR MONITORING PURPOSES - The equipment has at least one pressure sensor ( | 07-07-2011 |
20110237964 | Electronic Hemomanometer, Method of Correcting Pulse Wave Data of Electronic Hemomanometer, Program for Causing a Computer to Execute Procedures and Computer-Readable Recording Medium - An object of the present invention is to provide a pulse wave data compensator for an electronic hemomanometer, a method of controlling an electronic hemomanometer, an electronic hemomanometer, a method of correcting pulse wave data in an electronic hemomanometer, a program and a recording medium, all of which can easily and assuredly correct erroneous measurements in a pulse wave pattern. | 09-29-2011 |
20110251500 | ELECTRONIC SPHYGMOMANOMETER AND BLOOD PRESSURE MEASUREMENT METHOD - 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 on the cuff, a pressure sensor for detecting the 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 performing a blood pressure measurement. Further, the CPU acquires information on an application voltage of the valve or the pump at a time of blood pressure measurement, and the information on the application voltage is stored in the memory. The CPU corrects the application voltage so that control of the valve or the pump is carried out based on the application voltage stored in the memory. | 10-13-2011 |
20110251501 | ELECTRONIC SPHYGMOMANOMETER AND BLOOD PRESSURE MEASUREMENT METHOD - 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 be applied on the cuff, a pressure sensor for detecting the pressure in 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 blood pressure value based on separately acquired correction information and acquires information on a quality of the measurement site as the correction information. When the information on the quality of the measurement site is acquired as the correction information, the CPU corrects the blood pressure calculation parameter based on the information on the quality of the measurement site. | 10-13-2011 |
20110257540 | ELECTRONIC SPHYGMOMANOMETER AND BLOOD PRESSURE MEASURING METHOD - An electronic sphygmomanometer includes a central processing unit (CPU) that calculates a blood pressure calculation parameter by executing a predetermined calculation using a constant set in advance with respect to a change in a pressure pulse wave amplitude indicating a volume change of an artery at the time of blood pressure measurement. The CPU separately acquires measurement state related information related to a state of a user and/or a state of the cuff at the time of blood pressure measurement. When the measurement state related information is acquired, the CPU corrects the blood pressure calculation parameter by correcting the constant based on the measurement state related information. | 10-20-2011 |
20110295130 | BLOOD PRESSURE MEASUREMENT DEVICE INCLUDING CUFF TO BE WRAPPED AROUND MEASUREMENT SITE - A blood pressure measurement device includes a wrapping strength detecting portion for detecting a wrapping strength of a cuff with respect to a measurement site. The wrapping strength detecting portion detects the wrapping strength of the cuff prior to calculation of a blood pressure value by a blood pressure calculation unit. That is, the wrapping strength of the cuff is detected based on a relationship indicated by a volume change ΔV | 12-01-2011 |
20110301476 | ELECTRONIC SPHYGMOMANOMETER - In a sphygmomanometer for measuring blood pressure according to a volume compensation method, an upper arm V | 12-08-2011 |
20110306888 | BLOOD PRESSURE MEASUREMENT DEVICE, BLOOD PRESSURE MEASUREMENT PROGRAM PRODUCT, AND BLOOD PRESSURE MEASUREMENT CONTROL METHOD - When a start timing of an individual measurement control arrives, the pressurization control is started and a maximum blood pressure (blood pressure characteristic value) is estimated based on blood pressure characteristics information obtained during the pressurization control. The presence or absence of blood pressure fluctuation is determined based on the maximum blood pressure estimated this time and the (estimated) maximum blood pressure up to the previous times. The actual measurement process of the blood pressure is executed when determined that the blood pressure fluctuation is present. The actual measurement process is canceled when determined that the blood pressure fluctuation is absent. | 12-15-2011 |
20120046561 | BLOOD PRESSURE MEASURING APPARATUS - A blood pressure measuring apparatus, which measures a blood pressure of a living body, includes: a cuff-pressure control unit which controls a cuff pressure of a cuff that presses a part of the living body; an oscillation signal detection unit which detects an oscillation signal from the cuff pressure; a blood pressure specification unit which specifies systolic and diastolic blood pressures as the blood pressure of the living body from the oscillation signal; and a blood pressure determination unit which determines whether systolic and diastolic blood pressures are appropriate or not. The cuff-pressure control unit controls the cuff pressure to be inflated to a first set value, the blood pressure specification unit specifies the systolic and diastolic blood pressures based on a change of an oscillation signal that is detected by the oscillation signal detection unit when the cuff pressure is inflated to the first set value, and when the blood pressure determination unit determines that both the systolic and diastolic blood pressures are appropriate, the cuff-pressure control unit ends the inflating of the cuff pressure to release the cuff pressure. | 02-23-2012 |
20120078126 | VALIDATION OF AN OSCILLOMETRIC SIGNAL FOR USE IN A PERIPHERAL ARTERIAL DISEASE EVALUATION - Systems, methods, and products for validating an oscillometric signal obtained on a patient. The validation may include verifying whether an oscillometric signal is sufficiently associated with pressure oscillations in the vasculature of a patient for use in an oscillometric analysis. The validation may include comparing a frequency of the oscillometric signal to a reference frequency. | 03-29-2012 |
20120172735 | BLOOD PRESSURE MEASURING APPARATUS AND BLOOD PRESSURE MEASURING METHOD - A blood pressure measuring apparatus includes a cuff which is attached to and around an external ear; a first pulse wave detector and a second pulse wave detector which detect a pulse wave in a part squeezed by the cuff and which are affected differently from each other by a characteristic of body movements; a body movement detecting means which detects the characteristic of body movements; a pulse wave selecting means which selects a pulse wave detected by one of the first pulse wave detector and the second pulse wave detector based on the characteristic of body movements detected by the body movement detecting means; and a blood pressure value deriving means which derives a blood pressure value based on the pulse wave selected by the pulse wave selecting means. | 07-05-2012 |
20120197139 | AUTO-DIAGNOSTIC BLOOD MANOMETER - The present invention relates to a blood manometer displaying the examined person's heart condition, showing the name of a cardiac disease identified, comprising a cuff pressure control portion for adjusting the air pressure of a cuff; a blood pressure measuring portion having a pressure sensor for measuring blood pressure; a pulse measuring portion having a pulse wave sensor for measuring pulse waves; and a central process-and-control portion which processes by computing the data inputted by the blood pressure measuring portion and the pulse measuring portion, and displays in words the results of the blood pressure that has been measured, such as normal blood pressure, hypertension or hypotension, as well as the result of the pulse that has been measured, such as normal pulse, arrhythmia, tachycardia or bradycardia. The central process-and-control portion is also capable of storing and transmitting the data. | 08-02-2012 |
20120253209 | VENOUS PRESSURE MEASUREMENT APPARATUS - A non-invasive venous pressure measurement apparatus is provided, including: a first cuff attached to a portion including a vein and an artery in a living body; a pressure control unit that changes a first applied pressure applied by the cuff to the portion; a pulse wave detection unit that detects a pulse wave from a pressure received by the cuff from the portion; another pulse wave detection unit that detects another pulse wave including at least an arterial pulse wave in another portion of the living body; an analyzing unit that analyzes a correlation between the two pulse waves, which are changed as the applied pressure is changed by the pressure control unit changes; and a venous pressure calculation unit that calculates a venous pressure based on the applied pressure and a result of analysis by the analyzing unit. | 10-04-2012 |
20120259236 | SYSTEM AND METHOD OF MEASURING CHANGES IN ARTERIAL VOLUME OF A LIMB SEGMENT - A medical diagnostic device performs diagnostics for assessing the ability of the arteries to respond to an increase in blood flow. The medical diagnostic device determines relative changes in arterial volume of the limb segment during a time period after a stimulus relative to the arterial volume of the limb segment during a baseline period using the amplitudes or other portions of the component pulse waves (such as early systolic components) of volume pulse waves during the baseline period and after the stimulus. | 10-11-2012 |
20120277602 | CONTINUOUS BLOOD PRESSURE MONITORING - The systems and methods monitor a subject's blood pressure under a constant applied pressure. Measurements taken from a pressure measuring element and a pulse sensing element are combined to determine the subject's systolic and diastolic pressure. The systolic pressure is measured directly by the pressure measuring element, and the diastolic pressure is determined indirectly by using a pulse waveform to extrapolate portions of a pressure waveform. The systems and methods can be employed in any number of applications, including, without limitation, taking a single reading from a subject, continuously monitoring a subject, or evaluating a subject during physical exertion. | 11-01-2012 |
20120302901 | BLOOD PRESSURE INFORMATION MEASUREMENT DEVICE - A blood pressure information measurement device includes a main body, including an inflation pump and an exhaust valve, and a cuff, including an air bladder for pulse wave measurement and an air bladder for blood pressure value measurement. The air bladder for pulse wave measurement and the air bladder for blood pressure value measurement are wrapped around a proximal side and a distal side of the upper arm, respectively. A first piping portion connects the air bladder for blood pressure value measurement to the inflation pump and the exhaust valve. A second piping portion branching from the first piping portion connects the air bladder for pulse wave measurement to the first piping portion. The second piping portion includes a 2-port valve that switches between connecting and disconnecting the air bladder for pulse wave measurement and the first piping portion, and a pressure sensor for measuring a pulse wave. | 11-29-2012 |
20120302902 | Apparatus And Method For Diagnosis Of Individual Characteristics Based On Oscillometric Arterial Blood Pressure Measurement - This invention relates to a personal feature diagnostic apparatus on the basis of an oscillometric arterial pressure measurement comprising a pressure detection sensor unit for detecting a cuff pressure including an effect of pulse wave; a pulse wave extraction unit for extracting pulse wave signals of the artery from the cuff pressure detected in the pressure detection sensor unit; a pulse wave amplitude detection unit for dividing pulse wave signals extracted from the pulse wave extraction unit into a plurality of window sections and detecting a minimum amplitude pulse in each window section; and a personal feature diagnostic unit for diagnosing personal feature by using the minimum amplitude pulse in each window section detected by the pulse wave amplitude detection unit. | 11-29-2012 |
20130023777 | ELECTRONIC SPHYGMOMANOMETER FOR MEASURING BLOOD PRESSURE BASED ON ARTERIAL VOLUME CHANGE - Every pulse wave, a constant volume control unit performs servo control while updating a servo gain such that a difference between an arterial volume shown by an arterial volume signal that is detected by an arterial volume detection circuit and a control target value of the servo control is less than a control deviation at which a rate of change of the arterial volume relative to a change in cuff pressure is deemed to be constant. Because the control deviation is the difference between the arterial volume shown by the arterial volume signal and the control target value, a blood pressure decision unit decides, as a blood pressure, the cuff pressure sequentially detected in a period during which servo control is performed, by correcting the cuff pressure using the control deviation and the rate of change deemed to be constant. | 01-24-2013 |
20130030310 | BLOOD PRESSURE MEASUREMENT DEVICE - A cuff of a blood pressure measurement device compresses a measurement site by being wrapped therearound. A control unit evaluates the wrapping strength of the cuff, by comparing a detection amount detected based on the output of a sensor with a history of the detection amount stored in the storage unit. | 01-31-2013 |
20130060152 | APPARATUS AND METHOD FOR CONTINUOUS OSCILLOMETRIC BLOOD PRESSURE MEASUREMENT - A method that extends the oscillometric method, which currently is used for blood pressure measurement at one point in time, to provide continuous measurement of blood pressure (BP). The method provides a BP signal that is similar to an invasive arterial line continuous BP measurement with minimal changes in clinical procedures. The apparatus for performing the method includes a sensor with a fluid-filled, disposable, flexible bladder underneath a non-invasive inflatable cuff monitor. The inflatable cuff monitor provides a single-point BP value in a traditional manner. An electronic scaling adapter estimates the diastolic pressure and systolic pressure corresponding to the BP signal obtained from the fluid-filled bladder, uses the single-point BP value from the inflatable cuff monitor to scale the BP signal detected by the bladder, and outputs a scaled BP signal that can be displayed from a conventional vital signs monitor. | 03-07-2013 |
20130211268 | BLOOD PRESSURE INFORMATION MEASUREMENT DEVICE AND BLOOD PRESSURE INFORMATION MEASUREMENT METHOD - A CPU acquires factor information for a degree of arteriosclerosis, stores a plurality of pseudo blood flow waveforms, generates a waveform estimated as a blood flow waveform by compositing the plurality of pseudo blood flow waveforms based on the factor information, decomposes a pulse waveform into waveforms of an ejected wave and a reflected wave using the pulse waveform and the waveform estimated as the blood flow waveform, and calculates an index of the degree of arteriosclerosis from a relationship between the ejected wave and the reflected wave obtained by decomposing the pulse waveform. | 08-15-2013 |
20130324865 | DEVICE FOR MEASURING ARTERIAL PRESSURE - A device is sued for measuring arterial pressure. The device includes a body in the form of a wrist-watch, an element for fastening the latter on a user's wrist, said element being in the form of a wristband designed so that the clamping force of the wristband on the wrist can he adjusted. A pulsed wave sensor is arranged on the element for fastening the body on the user's wrist. The device includes an analog-digital converter, a filter for isolating the alternating component of a signal, and a measurement data indicator, a voice synthesizer and a pulsed wave sensor position indicator, which are integrated by their inputs. | 12-05-2013 |
20140012147 | CONTINUOUS NON-INVASIVE BLOOD PRESSURE MEASUREMENT APPARATUS AND METHODS PROVIDING AUTOMATIC RECALIBRATION - A blood pressure measurement system is configured to perform a calibration automatically when a calibration condition is satisfied. The calibration condition is based upon one or more parameters of pulse waves of a subject. The parameters may include pulse wave area; a time difference between systolic peak and reflected wave peak or dichrotic notch in the pulse wave and a shape of at least a portion of the pulse wave. | 01-09-2014 |
20140046201 | CONTINUOUS POSITIONING APPARATUS AND METHODS - 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. | 02-13-2014 |
20140066793 | METHODS AND APPARATUS FOR DETERMINING CUFF BLOOD PRESSURE - A method is provided for determining blood pressure for a subject using a sphygmomanometer. The method includes: measuring an oscillometric cuff pressure waveform of the subject using the sphygmomanometer; representing the measured waveform with a physical model accounting for mechanics of the cuff, an artery and coupling between the cuff and the artery; determining the model unknowns from the measured waveform; and determining blood pressure for the subject using the determined model. | 03-06-2014 |
20140180144 | OSCILLOMETRIC NON-INVASIVE BLOOD PRESSURE MEASUREMENTS IN PATIENTS EXPERIENCING ABNORMAL HEARTBEATS - Disclosed is a method for implementation by one or more data processors including acquiring noninvasive blood pressure data using an inflatable cuff applied around a portion of a patient by inflating the cuff to a pressure above the patient's systolic blood pressure, and detecting a first oscillation pulse within the cuff during a deflation step. The method also includes acquiring electrocardiogram (ECG) data from the patient by detecting an ECG waveform corresponding to a first heartbeat using an ECG lead coupled to the patient, classifying the ECG waveform as normal or not normal, aligning, the first oscillation pulse to the ECG waveform corresponding to the first heartbeat if the ECG waveform is classified normal or rejecting the first oscillation pulse if the ECG waveform is classified not normal, and calculating the blood pressure using the aligned first oscillation pulse. Related apparatus, systems, methods and/or articles are described. | 06-26-2014 |
20140194755 | CIRCULATORY DYNAMICS MEASUREMENT APPARATUS - The circulatory dynamics measurement apparatus comprises: a blood pressure-computing unit, which calculates the maximum blood pressure value (SYS); a vascular sclerosis-computing unit, which calculates the vascular sclerosis index (VSI); and a display unit for displaying a graph having a horizontal axis that represents the maximum blood pressure and a vertical axis that represents the vascular sclerosis index. The display unit displays the position determined by the calculated maximum blood pressure value and the calculated vascular sclerosis index in the plotting area of the graph. | 07-10-2014 |
20140207009 | BLOOD PRESSURE MEASUREMENT DEVICE - A blood pressure measurement device corrects the error caused by blood congestion. The device includes a blood pressure measurement section that calculates a blood pressure value of a patient based on the cuff pressure and pulse waves detected by a pressure sensor, a blood congestion determination section that determines a degree of blood congestion that occurred at a peripheral side of the measurement location due to the cuff pressure on the measurement location in accordance with a predetermined method, a blood pressure correction section that calculates a corrected blood pressure value based on the degree of the blood congestion, and a display that displays the corrected blood pressure value. | 07-24-2014 |
20140276146 | ELECTRONIC BLOOD PRESSURE METER - An electronic blood pressure meter includes a cuff that is to be worn on a measurement area, a piezoelectric pump that adjusts a pressure applied to the cuff, a drive circuit that drives the piezoelectric pump, and a controller that outputs, to the drive circuit, a pulse signal defining a driving timing of the piezoelectric pump. The drive circuit includes a switching circuit for switching a connection relationship between respective voltages applied to both ends of the piezoelectric pump in response to corresponding first and second driving signals, and a signal generation circuit that outputs the first and second driving signals based on the pulse signal outputted from the controller. The signal generation circuit has a signal conditioning circuit hat adjusts timings of the first and second driving signals so that the phases of the first and second driving signals do not overlap. | 09-18-2014 |
20140364749 | CALIBRATION FOR BLOOD PRESSURE MEASUREMENTS - Blood pressure measurement devices comprising a transducer may have error introduced when the transducer is placed in mechanical communication with a vein or artery. This error may be based on alignment, applanation, calibration, and the contact based stress required to obtain a signal from pressure in a vein or artery. The present invention teaches isolating and removing this error from the blood pressure system which may increase the accuracy of the measurement. Calibration is also provided. | 12-11-2014 |
20150080751 | BLOOD PRESSURE MEASURING DEVICE, FLEXIBLE COLLAR FOR A BLOOD PRESSURE MEASURING DEVICE, AND METHOD FOR BLOOD PRESSURE MEASUREMENT - Blood pressure measuring device with a flexible pressure collar, to surround a body part at least partially, with a pressure sensor element, wherein the shape of the pressure collar can be adapted to the outer contour of the body part, the pressure collar being at least partially inelastic. Further, the flexible pressure collar for a blood pressure measuring device to the relates pressure collar being inelastic and the shape being adapted to the outer contour of a body part. A method for non-invasive blood pressure measurement on a patient's body part with a blood pressure measuring device includes: positioning the pressure collar on the body part; setting the pressure collar such that it exerts pressure in the pulsatile region of the patient on the body part; and recording the pulsation for the period of at least one breathing cycle of the patient in the form of pulsation signals. | 03-19-2015 |
20150094602 | BLOOD PRESSURE MEASUREMENT DEVICE AND CONTROL METHOD FOR BLOOD PRESSURE MEASUREMENT DEVICE - A control amplitude and a control frequency of a voltage applied to a piezoelectric pump are determined, control is carried out so that a voltage at the determined control amplitude and control frequency is applied to the piezoelectric pump, and a blood pressure value is calculated based on a cuff pressure detected by a pressure detection unit during inflation when the cuff pressure is increased by the piezoelectric pump. The amplitude of the voltage is controlled in predetermined steps, and a voltage having an amplitude that is a value above the control amplitude by at least one step and a voltage having an amplitude that is a value below the control amplitude by at least one step are applied, in a predetermined order, so that the control is the same or essentially the same as when a voltage at the determined control amplitude is applied. | 04-02-2015 |
20150320364 | Method of Approximating a Patient's Pulse Wave Based on Non-Invasive Blood Pressure Measurement, A Logic Unit Therefore and a System Therefore - The present invention refers to a method of approximating a patient's pulse wave based on non-invasive blood pressure measurement, comprising the following steps: (a) non-invasively measuring a sequence n−1 . . . N of pulse signals pulse | 11-12-2015 |
20160029908 | BIOLOGICAL INFORMATION MEASURING APPARATUS AND BIOLOGICAL INFORMATION MEASURING METHOD - A biological information measuring apparatus and method are provided. A pulsation information detecting unit detects heartbeat information relating to a heartbeat of a subject. A pulse wave detecting unit detects a pulse wave while a portion of the subject is pressurized and depressurized by a cuff. An amplitude calculating unit detects a cardiac cycle of a heart from the heartbeat information and a maximal value of the pulse wave in each cardiac cycle, and calculates, based on the maximal value detected from the pulse wave, at least one of an amplitude value derived from the heartbeat of the subject, an amplitude value assisted by an IABP, and an amplitude value derived from a blood flow volume of the subject. A blood pressure calculating unit calculates a blood pressure value from a relationship between the amplitude values calculated by the amplitude calculating unit and a pressurizing force of the cuff. | 02-04-2016 |
20160038040 | CONTINUOUS POSITIONING APPARATUS AND METHODS - 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. | 02-11-2016 |
20160249819 | IMPROVED SPHYGMOMANOMETER CAPABLE OF DISPLAYING THE QUALITY OF BLOOD PRESSURE READINGS | 09-01-2016 |
20180020927 | REAL TIME AUTHENTICATION BASED ON BLOOD FLOW PARAMETERS | 01-25-2018 |