Abstract: Embodiments of the present invention include a system having at least one sensor configured to monitor a muscle oxygen saturation (SmO2) level of a patient who is undergoing cardiac arrest and to generate a signal representing SmO2 level; a user interface device; a processor communicably coupled to the user interface device, the processor configured to cause the user interface device to present an array of two or more possible nodes of a clinical decision support tree, wherein at least one of the nodes indicates cardiopulmonary resuscitation (CPR) treatment of the patient with no ventilation, and wherein at least another of the nodes indicates CPR treatment of the patient with active ventilation; determine which of the two or more possible nodes should be emphasized based on the SmO2 level; and update the array of the two or more possible nodes based on the determination.

Abstract: A blood pressure measurement method includes wrapping a cuff around a site. The cuff includes: a first bladder that swells due to receiving fluid and is arranged at an outer surface of the site that corresponds to a first half surface where an artery is; and a second bladder that swells due to receiving fluid and is arranged at the outer circumferential surface of the measurement site that corresponds to a second half surface opposite to the first half surface. During inflation, the pressure of the second bladder is made larger than the first bladder by supplying more fluid such that the stroke amount by which the second fluid bladder swells is larger in the thickness direction. Then, the two bladders are inflated at equal rates. In the process of inflating, or in the process of deflating at rates equal to each other after inflating, blood pressure is measured.

Abstract: A vital information measuring apparatus according to an aspect of the present invention is a vital information measuring apparatus for measuring vital information by compressing a measurement site of a subject with a cuff, and includes a fluid supply unit configured to supply a fluid to the cuff, and a first fluid supply controller configured to control, when a situation of the subject satisfies a first condition in which measurement of the vital information is recommended, a supply of the fluid to the cuff by the fluid supply unit to compress the measurement site in a first compression mode for informing the subject that the first condition is satisfied.

Abstract: A pressurizing/depressurizing section (3) increases or decreases an internal pressure of a cuff (20). A first controlling section (4) controls an operation of the pressurizing/depressurizing section (3) so as to cause the internal pressure to transit from a pressure transient state to a pressure steady state and vice versa. A detecting section (5) detects the internal pressure. A storage section (6) stores control modes ways for increasing/decreasing the internal pressure of which are different. A determining section (7) determines a type of the cuff (20) in accordance with whether the detected internal pressure has reached the pressure steady state within a predetermined time period since start of the pressure transient state. A second controlling section (9) selects one of the control modes in accordance with the determined type of the cuff (20), and to control the operation of the pressurizing/depressurizing section (3) in accordance with the selected one of the control modes.

Abstract: Methods and apparatus are provided for assessing endothelial function in a mammal.

Abstract: Methods for adaptive cuff inflation for the purposes of occluding a limb of a subject include inflating a cuff to a pressure at or above limb occlusion pressure and periodically deflating the cuff to detect amplitude of oscillometric oscillations reaching or exceeding a predetermined threshold, whereby indicating that the cuff pressure has reached an updated systolic blood pressure. Selecting the cuff to be wide enough to define limb occlusion pressure at or below the systolic blood pressure assures that this maneuver does not compromise cessation of blood flow to the limb. Devices are disclosed configured to operate in at least two of the following three operating modes: a tourniquet mode, a remote conditioning mode and a blood pressure monitoring mode.

Abstract: A medical workstation is defined by a supporting structure having at least one medical diagnostic instrument disposed thereupon. A first display is further disposed on a first side of the supporting structure and a second display is disposed on a second side of the supporting structure in a manner substantially opposite from the first display. Each of the first and second displays are interconnected to the at least one medical diagnostic instrument to permit at least one of the displays in order to display diagnostic results and are tandemly or independently controllable.

Abstract: A method for inflating a cuff of a non-invasive blood pressure measurement apparatus includes obtaining a plurality of pressure values of the cuff at a plurality of time points; calculating a first inflation speed parameter on the basis of the plurality of pressure values, a plurality of target pressure values of the cuff at the plurality of time points and a plurality of inflation speed parameters corresponding to each time interval between every two adjacent time points of the plurality of time points; and inflating the cuff at a speed corresponding to the first inflation speed parameter from a last time point of the plurality of time points to a first time point after the plurality of time points. In this way, uniform cuff inflation can be achieved when the target pressure values of the cuff change uniformly, so that the over-voltage phenomenon or the condition of low-speed cuff inflation can be reduced or eliminated.

Abstract: 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 that adjusts timings of the first and second driving signals so that the phases of the first and second driving signals do not overlap.

Abstract: 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.

Abstract: The present invention relates to an apparatus and method for facilitating blood pressure measurement. An additional fluid reservoir is arranged to be connected in fluid communication with the blood pressure cuff. The fluid reservoir provides an additional, compliant volume to the fluid volume of the cuff, facilitating blood pressure measurement, particularly for small volume cuffs.

Abstract: A system for remote ischemic preconditioning that includes a cuff, and actuator, and a controller that operates the actuator according to a treatment protocol. The treatment protocol includes a plurality of treatment cycles that each comprise cuff actuation, an ischemic duration, cuff release, and a reperfusion duration.

Abstract: A blood pressure measurement device includes a finger cuff for measuring a blood oxygen saturation level of a subject as physiological information excluding a blood pressure, a pulse wave detecting portion, and an oxygen saturation level calculating portion, where a start of blood pressure measurement in a sphygmomanometer is determined by a comparing and determining portion when a value becomes greater than or equal to a reference value. After the end of the measurement, a time limit for limiting the start of the blood pressure measurement is set. The comparing and determining portion determines not to start the blood pressure measurement within the time limit even if the blood oxygen saturation level becomes greater than or equal to the reference value.

Abstract: An acoustic sensor is configured to provide accurate and robust measurement of bodily sounds under a variety of conditions, such as in noisy environments or in situations in which stress, strain, or movement may be imparted onto a sensor with respect to a patient. Embodiments of the sensor provide a conformable electrical shielding, as well as improved acoustic and mechanical coupling between the sensor and the measurement site.

Abstract: A blood pressure measuring method, according to which a pulse oscillogram of a patient is defined, the blood pressure is then determined from the pulse oscillogram and displayed. Reliable blood pressure values are obtained without additional cost to the user, by obtaining an evaluation criterion for the presence of haemodynamic stability from the individual pulse oscillogram, the determination of the blood pressure value or the determined blood pressure value being related to the criterion.

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 acoustic sensor is configured to provide accurate and robust measurement of bodily sounds under a variety of conditions, such as in noisy environments or in situations in which stress, strain, or movement may be imparted onto a sensor with respect to a patient. Embodiments of the sensor provide a conformable electrical shielding, as well as improved acoustic and mechanical coupling between the sensor and the measurement site.

Abstract: A medical blood pressure transducer that provides an identifier to a monitor that conveys characteristics of the transducer. The monitor can use the information to decide whether to function, or in calibration of the system. The transducer may be part of a disposable blood pressure monitoring system, and may include two transducers closely-spaced to provide two separate but identical outputs. In this way, the transducer may be connected to both a patient monitor and a cardiac output monitor at the same time measurements from a single line can be simultaneously supplied to two separate monitoring devices (for example a patient monitor and a cardiac output monitor). The identifier for the transducer may be circuitry, specifically a resistance/capacitance (RC) combination that possesses a characteristic time constant.

Abstract: A manual pressurization electronic sphygmomanometer includes a specific component detection unit for detecting a synthetic wave of a manual fluctuation wave and a pressure pulse wave as a specific component from a cuff pressure signal obtained during pressurization; a derivation processing unit for deriving a pressurization target value based on the detection result of the specific component detection unit; and a display unit for notifying to urge pressurization up to the pressurization target value. The derivation processing unit calculates a pulse wave component based on the waveform before and after the specific component and the waveform of the specific component, and determines a value obtained by adding a predetermined value to the systolic blood pressure value estimated based on the amplitude of the pulse wave component as the pressurization target value.

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: An acoustic sensor is configured to provide accurate and robust measurement of bodily sounds under a variety of conditions, such as in noisy environments or in situations in which stress, strain, or movement may be imparted onto a sensor with respect to a patient. Embodiments of the sensor provide a conformable electrical shielding, as well as improved acoustic and mechanical coupling between the sensor and the measurement site.

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: 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 blood pressure measuring device disclosed in the present invention comprises a base, a reel-type cuff and at least one stopper. The reel-type cuff is elastically and recoverably reeled in the base with one end, and is freely extended out from the base with the other end. The stopper, after being operated, can limit at least one determined length that the reel-type cuff is extended out from the base.

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 CPU of a sphygmomanometer includes a first control unit that, during measurement, controls a change in the internal pressure of a measurement air bladder by controlling the driving of a pump and/or a valve. The CPU further includes a second control unit that controls a change in the internal pressure of a compressing air bladder by controlling the driving of a pump and/or a valve. During measurement, the second control unit carries out control so that the internal pressure of the compressing air bladder is a predetermined ratio to the internal pressure of the measurement air bladder controlled by the first control unit.

Abstract: 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.

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 present invention provides a new multi-mode sphygmomanometer which integrates into one enclosure a full manual sphygmomanometer comprising a mechanical cuff pressure measuring and display system, a manual inflation bulb and deflation valve such elements comprising the manual/mechanical aspect of the integrated device. Within the same physical enclosure and integrated with the manual sphygmomanometer the device also comprises an electronic blood pressure measuring and monitoring device comprising electronic sensing of the pressure, electronic indication of the cuff pressure and oscillation or KS amplitudes and logic implemented in a microprocessor that automatically interprets these signals to determine the BP parameters.

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: Apparatus is provided for protecting a patient's limb from tourniquet-related injury, comprising: a tourniquet cuff having a length sufficient for encircling a limb protection sleeve applied to a limb at a location having a limb circumference of not less than a predetermined minimum limb circumference and not more than a predetermined maximum limb circumference; limb protection sleeve adapted for applying to the limb at the location, wherein the sleeve has a tubular shape and a tubular circumference predetermined to be less than the predetermined minimum and wherein the sleeve is formed to allow elastic stretching of the tubular shape sufficient to increase the tubular circumference to be substantially equivalent to the limb circumference at the location when the sleeve is applied to the limb, thereby applying a pressure to the limb that is greater than a predetermined minimum pressure and less than a predetermined maximum pressure; and identification means perceptible to a user for providing an indication to

Abstract: An apparatus for determining the blood pressure of a patient which allows the patient to first measure his measured blood pressure using a blood pressure measuring device and then, at a later time, estimate his current blood pressure using a blood pressure calculating device that includes a mathematical model for estimating blood pressure based on a current change in blood pressure induced by a heart beat and the previously measured blood pressure. The apparatus includes a transmitter device that detects the presence of a blood pressure calculating device connected to or in proximity of the blood pressure measuring device and transmits the previously measured blood pressure value to the blood pressure calculating device.

Abstract: At the time of blood pressure measurement by an electronic blood pressure monitor, a calculation portion calculates a blood pressure based on a pressure within a cuff detected by a pressure sensor, and outputs blood pressure data. A data storing portion stores the blood pressure data in a memory in association with condition data indicating a condition concerning the blood pressure. A manipulation portion is manipulated by a user to designate a desired condition from among a plurality of conditions. When the manipulation portion is manipulated, a read and display portion searches the memory based on the condition designated by the manipulation, reads the blood pressure data associated with the designated condition from the memory, and displays the read data on a display portion.

Abstract: There is provided an electronic sphygmomanometer that permits a user to visually recognize easily that he or she started measurement by manipulating his or her identification key and that his or her measured value is being displayed on a display unit. The electronic sphygmomanometer 10 includes blood pressure measuring means 26 for measuring a blood pressure value, a display unit 28 for displaying the blood pressure value, a plurality of user identification keys 34 selectable by respective users, and a plurality of light emitting means 36 disposed corresponding to the respective user identification keys 34. When a user identification key A34a is manipulated, a measured blood pressure value is stored in the memory corresponding to the manipulated user identification key 34a, and the light emitting means A?36a corresponding to the manipulated user identification key A34a emits light while the blood pressure value of the user is being measured and/or being displayed.

Abstract: An apparatus for assessing cardiovascular status of a mammal comprises a system for locally applying a pressure to an artery capable of restricting blood flow through said artery, a wideband external pulse transducer having an output and situated to measure suprasystolic signals proximate to said artery, and a computing device receiving said output for calculating vascular compliance values. The method described is particularly useful for determining cardiac output, assessing whether a pregnant female has preeclampsia or a patient has cardiac insufficiency, or assessing cardiac arrhythmia.

Abstract: A system for remote ischemic preconditioning that includes a cuff, and actuator, and a controller that operates the actuator according to a treatment protocol. The treatment protocol includes a plurality of treatment cycles that each comprise cuff actuation, an ischemic duration, cuff release, and a reperfusion duration.

Abstract: Current noninvasive blood pressure measurement methods are not able to measure pressure during nonpulsatile blood flow. We propose method to measure intravascular or other compartment pressure which applies extrinsic pressure oscillation. Pressure-volume response of the compressed structure is obtained and compartment pressure is estimated as the extrinsic pressure at which compressed structure has the highest compliance. Delivering extrinsic oscillations at a higher frequency than the pulse rate, pressure reading can be obtained much faster. Because it is not dependant on intrinsic vascular oscillations, pressure can be measured during arrhythmias, during cardiac bypass, during resuscitation, in the venous compartment or in the other nonpulsatile compressible body compartments.

Abstract: A 3-way solenoid valve (20) is arranged between a cuff (10) and a first pressure sensor (30), wherein the common port of the 3-way solenoid valve (20) is connected with the first pressure sensor (30), the normally open port thereof connected with the cuff (10), and the normally closed port thereof connected with the air atmosphere during zeroing process. Moreover, an independent timing circuit (45) is provided additionally. In the measurement method of the present invention, the zeroing is performed with the help of the 3-way solenoid valve (20). Once a state of overtime or overpressure occurs, an air pump (50) is immediately closed, and a quick-deflation solenoid valve (60) is opened so that the pressure in the cuff (10) is released to ensure safe application.

Abstract: A pressure cuff is disclosed herein. The pressure cuff includes a sleeve and a cuff bladder. The cuff bladder defines a bladder length of 9.2+/?2.1 centimeters and a bladder width of 24.6+/?4.2 centimeters. The bladder length and bladder width dimensions provide precise non-invasive blood pressure measurements when the pressure cuff is applied to a forearm having a circumference in the range of 27 to 37 centimeters.

Abstract: A blood pressure monitoring system that includes a compact housing that contains a pneumatic circuit that is removably attached to an inflatable cuff by a hoseless connector so that the cuff can be inflated and deflated to provide blood pressure readings that are detected by a pressure sensor. A controller is also contained in the housing which controls the circuit activities and records blood pressure related data. The controller is linked via a bidirectional communication system with a processor that is contained in a host station which programs the controller and collects and records blood pressure related data. The communication system also allows the monitoring system to communicate over a wider network with other remote stations.

Abstract: A method and apparatus are disclosed for determining certain cardiac medical parameters that are useful is diagnosing and treating cardiovascular disease.

Abstract: The present invention relates to cuff-based method for the measurement of systolic blood pressure (SBP) by measuring photoplethysmographic (PPG) signals in peripheral blood vessels distal to the cuff and to a method for cuffless measurement of SBP by analyzing PPG signals in peripheral blood vessels, after suitable calibration by the cuff-based PPG method for the measurement of SBP.

Abstract: The present invention provides a portable hydraulic sphygmomanometer comprising: a manual hydraulic belt, a pressure sensor for detecting the pressure of hydraulic belt, and a compute device for calculating the blood pressure.

Abstract: Improved tourniquet apparatus for measuring a patient's limb occlusion pressure includes an inflatable tourniquet cuff for encircling a limb at a location and to which a tourniquet instrument is releasably connectable.

Abstract: A method for identifying a non-invasive blood pressure cuff type is disclosed herein. The method includes inflating a cuff and obtaining a first pressure measurement in a non-invasive blood pressure system while inflating the cuff. The method also includes obtaining a second pressure measurement in the non-invasive blood pressure system while inflating the cuff and identifying a cuff type based on the first pressure measurement and the second pressure measurement. A corresponding blood pressure monitoring system is also provided.

Abstract: A method and apparatus are disclosed for the non-invasive measurement, processing and utility of blood pressure cuff oscillation signals from a blood pressure cuff applied to a body part when the blood pressure cuff pressure is at supra-systolic pressures. Oscillometric cardiac pulse waveforms associated with the peripheral artery are monitored during a plurality of cardiac ejection cycles while at supra-systolic pressure, and are measured pneumatically and transduced by an oscillometric pressure sensor. The analog signal is amplified, processed and digitized to provide a recordable waveform that can be analyzed to obtain information relating to the patient's cardiovascular status.

Abstract: A method and system for operating a non-invasive blood pressure monitor that utilizes an SpO2 plethysmographic signal to reduce the time required to obtain an estimation of a patient's blood pressure. During operation of the NIBP monitor, the NIBP monitor utilizes the SpO2 plethysmographic signal to determine a timing period and a deflation period for each pulse associated with the patient's heartbeat. Upon receiving an oscillation pulse, the NIBP monitor determines the oscillation amplitude during the timing period and deflates the blood pressure cuff during the deflation period immediately following the timing period. Preferably, the deflation period occurs during the same oscillation pulse used to calculate the oscillation pulse amplitude to decrease the amount of time required to obtain a blood pressure estimate from the patient.

Abstract: 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.

Abstract: The present invention provides an automatic blood pressure monitor for measuring the arterial blood pressure at a location on a patient. The automatic monitor of the invention does not require an external pump of any type. The invention uses a propellant supply chamber containing a predetermined quantity of propellant in order to inflate a pressure occluding bladder, thus allowing the measurement to be made. All of the elements comprising the monitor are attached to or are an integral part of a strap, which supports the monitor at the desired location on the patient. The monitor of the invention is inexpensive and simple to operate and can be used by non-professional persons in non-clinical or non-laboratory environments.

Abstract: A method and system for operating a non-invasive blood pressure monitor that utilizes an SpO2 plethysmograph signal to determine the initial inflation pressure for the blood pressure cuff of the NIBP monitor. A pulse sensor is placed on the patient's limb distal to the blood pressure cuff such that as the blood pressure cuff is inflated, the pulse signals from the pulse sensor will be reduced. When the blood pressure cuff reaches systolic pressure, the pulse signals from the pulse sensor will be initially attenuated and eventually eliminated, thus providing an indication that the cuff pressure has reached systolic pressure for the patient. The central processor of the NIBP monitor compares the pulse signals during cuff inflation to an average pulse signal and terminates the inflation of the blood pressure cuff upon sufficient attenuation.