Abstract: A method for a non-invasive determination of cardiopulmonary interaction parameters in a patient includes fitting a pressure cuff on the patient, setting a volume of the pressure cuff in a pulsatile range of the patient, measuring pulsatile signals over time, and evaluating the measured pulsatile signals so as to ascertain the cardiopulmonary interaction parameters.

Abstract: To better position an ultrasonic transducer typically used in non-invasive fetal monitoring during labor, the present invention consists of a transducer-aligning device having a plurality of selectively fillable chambers, each chamber having a resiliently deformable side-wall. A fluid, such as air, can be selectively pumped or released into any combination of the chambers. When coupled to an ultrasonic transducer, the selective use of air pressure in the bladder more precisely aligns and positions the fetal monitor transducer to improve imaging. In a second embodiment, the present invention includes a solid wedge-shaped protrusion extending below the bottom surface of the housing and adapted to rotate about 360-degrees to enable a care-giver to selectively position the wedge and thus align the associated transducer for optimal readings of fetal heart rate.

Abstract: 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.

Abstract: A method for measuring reactive hyperemia in a subject is disclosed. The method includes performing a first segmental cuff plethysmography to generate a baseline arterial compliance curve and/or a baseline pressure-area (P-A) curve, performing a second segmental cuff plethysmography to generate a hyperemic arterial compliance curve and/or a hyperemic P-A curve, and calculating an area between the baseline and the hyperemic curves. The size of the area can be used as an indication of endothelial dysfunction (ED) and ED-related diseases.

Abstract: A method of estimating blood pressure includes obtaining a pressure wave detected at a measurement body part of a subject, calculating a characteristic ratio of the subject according to a shape of the detected pressure wave based on a correlation between the characteristic ratio used to determine blood pressure at a measurement body part and the shape of the pressure wave detected at the measurement body part, and estimating blood pressure at the measurement body part of the subject is estimated using the calculated characteristic ratio.

Abstract: A non-invasive blood pressure monitoring system, includes an air channel having one or more inlet and exhaust ports to ambient air. An electronically controlled pump inflates and deflates a cuff applied to a patient limb with air via the air channel. A water tight sealed housing containing electronic circuitry for processing signals used in deriving a measurement of patient blood pressure in conjunction with inflating and deflating the cuff. The water tight sealed housing also is sealed from the air channel.

Abstract: A blood pressure cuff is defined by a first sheet, having an opening, and a second sheet. The second sheet is attached to a bottom of the first sheet to form an interior inflatable portion between the first sheet and the second sheet, with the opening of the first sheet fluidly interconnecting the interior inflatable portion with an exterior of the cuff. The blood pressure cuff is made from a single type of material and can be recycled, biodegradable, or composted.

Abstract: The invention provides a system and method for measuring vital signs (e.g. SYS, DIA, SpO2, heart rate, and respiratory rate) and motion (e.g. activity level, posture, degree of motion, and arm height) from a patient. The system features: (i) first and second sensors configured to independently generate time-dependent waveforms indicative of one or more contractile properties of the patient's heart; and (ii) at least three motion-detecting sensors positioned on the forearm, upper arm, and a body location other than the forearm or upper arm of the patient. Each motion-detecting sensor generates at least one time-dependent motion waveform indicative of motion of the location on the patient's body to which it is affixed.

Abstract: A blood pressure cuff is defined by a sleeve member, a portion of which is inflatable and made from a fluid impermeable material. An exterior port of the sleeve directly and fluidly interconnects with the interior of said inflatable portion, wherein a slotted portion is aligned with the port to receive the port when the cuff is wrapped about the limb of a patient. The slotted portion is sized to provide a range of cuff sizes wherein the cuff can be entirely made from a biodegradable or recyclable material. A plurality of cuffs can be packaged for sequential dispensing thereof.

Abstract: Provided are a method and apparatus for correcting an error in blood pressure measurement. In a method of correcting an error in a measured blood pressure, the error in the measured blood pressure, which is measured at a first site of a first body is calculated based on a correlation between a shape of a sphygmogram measured at a first body part and a difference between blood pressure measured at a first body part and blood pressure measured at a second body part, and the blood pressure measured at a first site of a first body is corrected using a calculated error.

Abstract: A measurement accuracy check system of a sphygmomanometer includes a sphygmomanometer having a blood pressure measurement mode for measuring a blood pressure based on a change in internal pressure of a cuff attached to a blood pressure measurement site, and an accuracy check mode for checking measurement accuracy in the blood pressure measurement mode, and an accuracy check device communicably connected with the sphygmomanometer for determining the measurement accuracy of the sphygmomanometer in the accuracy check mode. The sphygmomanometer includes an air system piping communicating to the cuff in the blood pressure measurement mode and communicating to an air system of the accuracy check device in the accuracy check mode, a pressurization and depressurization unit for adjusting pressure to be applied to the air system piping, and a first pressure detection unit for detecting pressure in the air system piping.

Abstract: A method for determining haemodynamic parameters from patient pressure signals includes receiving patient pressure signals from a measurement receiver to which vessel pressures measured in the body of a patient are supplied, selecting and determining a patient pressure signal as reference pressure signal from the patient pressure signals sent from the measurement receiver, dividing the patient pressure signals and reference pressure signal into segments, and examining these segments for artifacts with methods in the time range by using the first derivative with respect to time of the pressure signals wherein artifact afflicted segments are discarded. The method further includes determining the start and end of a heart beat by the reference pressure signal and using the non-discarded segments of the patient pressure signals for calculating haemodynamic parameters.

Abstract: A blood pressure monitor includes a cuff to be wound around a living body of a subject, a measuring unit for measuring blood pressure with said cuff wound around the living body of said subject, a detecting unit for detecting an inclination angle of said cuff, a specifying unit for specifying a current inclination level among a plurality of predetermined inclination levels upon measurement by said measuring unit, based on a result of detection by said detecting unit, a memory for storing therein the inclination level specified by said specifying unit, in association with blood pressure data measured by said measuring unit, and a notifying unit for providing notification of at least one past inclination level of the plurality of inclination levels stored in said memory and said current inclination level, in association with each other.

Abstract: A method of measuring blood pressure of a patient is provided. The method comprises inflating a blood pressure cuff to a user selectable target pressure and subsequently further inflating or deflating the blood pressure cuff in a stepwise manner by a predetermined pressure amount. At each pressure step in a first sequence of alternate steps of cuff pressure variation, the occurrence of at least two successive oscillometric pulses with matching pulse amplitude and other possible matching criteria is identified. The blood pressure cuff is inflated following the identification. Further a single oscillometric pulse is obtained at each pressure step in a second sequence of alternate steps of cuff pressure variation. The pattern of inflating, obtaining two matching oscillometric pulses, inflating, and obtaining a single oscillometric pulse is repeated until sufficient oscillometric envelope information is obtained for determining one or more blood pressure parameters of the patient.

Abstract: 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. It is determined when the cuff is completely occluding the extremity, e.g., by detecting pulses at a second, partially occluded cuff or by a photoplethysmogram attached to the big toe. 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.

Abstract: A system (1) for blood pressure measurement at the point of care comprises a blood pressure measuring device (10) for measuring the blood pressure of an individual (I) and seat (20) for properly positioning the individual (I). The seat (20) includes means (21) for ensuring correct position of the individual's feet and legs. The blood pressure measuring device (10) is arranged at a location (12) physically separated from a data collecting device (30). The blood pressure measuring device (10) is provided with a communication interface (11) for transmitting data to the collecting device (30).

Abstract: A cuff for a blood pressure monitor has an air bag inflated/deflated as the air comes in/out. The air bag has an inner wall portion located on the inner side in the fitted state of the cuff and an outer wall portion located outer than the inner wall portion, and a side wall portion connecting side end portions of the inner and outer wall portions and folded inwards in the deflated state of the air bag to form a gusset at each side end portion of the air bag. A bonded portion is provided at a region of the air bag in its winding direction around the living body, for reducing expansion of the gusset formed by the side wall portion. Thus, occurrence of lateral displacement of the cuff is prevented, and a highly reliable blood pressure monitor of high performance can be obtained.

Abstract: Adaptive attachments used in combination with a blood pressure cuff enable various blood pressure measurements to be taken in a hospital or other setting having various single and/or dual lumen manual or electronic blood pressure measuring equipment with a single patient-worn cuff.

Abstract: A blood pressure measuring apparatus includes a plurality of mechanisms compressing a cuff, and the mechanisms are separately controlled. Therefore, a stable measurement attitude is maintained irrespective of a circumference or a shape of an upper arm. Compression degrees are separately controlled, whereby a pressure can evenly be applied to the cuff to improve a compression force acting on an artery.

Abstract: Provided is a radial arterial pulse sensing apparatus for noninvasive and continuous measurement of blood pressure and arterial elasticity. The apparatus includes two pressure sensor for detecting radial arterial pulses, two cuffs that are disposed under the respective pressure sensors and expandable by application of external pressure, a motor unit for providing proper pressure to expandable pouches under the respective pressure sensors in a state where a wrist band having the pressure sensors is put on a wrist, a pulse wave velocity calculating unit that calculates a pulse wave transfer velocity to attain a blood pressure value using an output from the pressure sensors, and an augmentation index calculating unit that estimates the blood pressure value by finding a time point of a reflective wave of the pulses using the outputs from the pressure sensors.

Abstract: 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 data values from the pressure transducer. Each of the processing techniques separately constructs an oscillometric envelope based upon the oscillometric data values. Based upon the plurality of separate oscillometric envelopes, the system compares the envelopes and develops a calculated blood pressure from the plurality of envelopes. The calculated blood pressure is then displayed by the NIBP system. The plurality of oscillometric envelopes can be compared and combined in different manners to calculate the patient's blood pressure from the plurality of different processing techniques.

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: A occlusion detector for a dual-port surgical tourniquet system comprises: a tourniquet cuff for encircling a patient's limb and including an inflatable portion that communicates pneumatically with a first cuff port and that communicates pneumatically with a second cuff port independently of the first cuff port; a tourniquet instrument that is releasably connectable to the first and second cuff ports to establish first and second pneumatic passageways between the tourniquet cuff and the tourniquet instrument, wherein the tourniquet instrument includes pressure sensing means communicating with the first pneumatic passageway for producing an indication of the pressure in the cuff over a time period suitably long for the performance of a surgical procedure, pressure regulation means communicating with the second pneumatic passageway for regulating the pressure in the cuff near a reference pressure level, and an occlusion detector for introducing a pneumatic pressure pulse into the first pneumatic passageway duri

Abstract: Hemodynamic data and imaging data are obtained about a patient, and the data is combined to generate a single report integrating same. While a hemodynamic system obtains the hemodynamic data, an imaging system obtains the imaging data. Preferably, the report confirms the absence or presence (and/or severity) of peripheral arterial disease, including quantitative data. The hemodynamic system and the imaging system can communicate directly, indirectly, and/or wirelessly. They may be contained within a common enclosure and/or integrated into a single apparatus. Either or both of the hemodynamic system and/or the imaging system can also be configured to measure the blood pressure of the patient. Preferably, the imaging system is an ultrasound imaging system, and improved workflows for diagnosing peripheral arterial disease result.

Abstract: A blood pressure measurement and reminder system comprising a blood pressure measuring unit, a reminder unit, and an input unit is disclosed. The system is configured to transmit reminder signal(s) noticeable to its users for alerting them to take blood pressure measurement within a pre-determined measurement time schedule, and send confirmation signal(s) to the reminder unit to switch off the reminder state once the user has successfully taken a blood pressure measurement.

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: The present invention provides a technique for continuous measurement of blood pressure based on pulse transit time and which does not require any external calibration. This technique, referred to herein as the ‘Composite Method’, is carried out with a body-worn monitor that measures blood pressure and other vital signs, and wirelessly transmits them to a remote monitor. A network of body-worn sensors, typically placed on the patient's right arm and chest, connect to the body-worn monitor and measure time-dependent ECG, PPG, accelerometer, and pressure waveforms. The disposable sensors can include a cuff that features an inflatable bladder coupled to a pressure sensor, three or more electrical sensors (e.g. electrodes), three or more accelerometers, a temperature sensor, and an optical sensor (e.g., a light source and photodiode) attached to the patient's thumb.

Abstract: The present invention provides a technique for continuous measurement of blood pressure based on pulse transit time and which does not require any external calibration. This technique, referred to herein as the ‘Composite Method’, is carried out with a body-worn monitor that measures blood pressure and other vital signs, and wirelessly transmits them to a remote monitor. A network of body-worn sensors, typically placed on the patient's right arm and chest, connect to the body-worn monitor and measure time-dependent ECG, PPG, accelerometer, and pressure waveforms. The disposable sensors can include a cuff that features an inflatable bladder coupled to a pressure sensor, three or more electrical sensors (e.g. electrodes), three or more accelerometers, a temperature sensor, and an optical sensor (e.g., a light source and photodiode) attached to the patient's thumb.

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: 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 portable blood pressure measuring apparatus and a method therefor are provided. In the portable blood pressure measuring apparatus, a blood pressure measurer measures a wrist or finger blood pressure being an arterial pressure at a wrist or a finger, a Pulse Wave Velocity (PWV) measurer measures a PWV, a controller controls compensation of the wrist or finger blood pressure using the PWV so that the wrist or finger blood pressure corresponds to a brachial blood pressure, and a display displays the compensated wrist or finger blood pressure.

Abstract: A system for measuring a blood pressure value from a patient features a sensor configured to be worn on the patient's thumb. The sensor includes one or two light sources that emit optical radiation, and a photodetector that detects the optical radiation after it passes through a portion of a vessel (e.g. an artery or capillary) in the patient's thumb to generate a first time-dependent signal (e.g. a PPG waveform). In embodiments the sensor is made from a flexible material that wraps around a portion of the patient's thumb (e.g. the base) while leaving the thumb's tip uncovered. This configuration is less awkward than most finger-worn sensors, and allows the patient to comfortably go about their day-to-day activities (e.g. reading, eating) with little obstruction. The system also includes at least two electrodes that are configured to be worn on the patient's body and detect electrical signals that are processed by an electrical circuit to generate a second time-dependent signal (e.g. an ECG waveform).

Abstract: A blood pressure measuring apparatus includes an inflatable sleeve socket that is capable of receiving an engagement portion of a compact gage housing having either a contained mechanical or an electronic pressure gauge. This coupling permits direct attachment to the sleeve and permitting fluid interconnection between the interior of the sleeve and the contained pressure gauge without requiring any hoses or tubing therebetween. The electronic pressure gauge is responsive to changes in pressure within the inflatable sleeve. The pressure changes can be processed and output to an integral display or can be wirelessly transmitted.

Abstract: A blood pressure monitor includes a cuff having an air bag, a main-unit casing in which an inflation/deflation mechanism for inflating/deflating the air bag is provided, a flexible air tube connecting the air bag and the inflation/deflation mechanism, and a retractor unit capable of drawing in the air tube that is drawn out from the main-unit casing into an air tube housing provided in the main-unit casing. With this structure, the blood pressure monitor can be made superior in housing of the air tube connecting the cuff and the main-unit casing.

Abstract: A sphygmomanometer having an elongated tube, an air chamber coupled to a first end of the tube, and a liquid chamber coupled to a second end of the tube. The liquid chamber is partially filled with fluid and is couplable to a source of external pressure. An offset region located proximate the second end of the tube has a significantly reduced cross-sectional area so as to reduce the effect of fluid level changes on pressure measurement accuracy. At least one ventilation valve is coupled to the elongated tube and the air chamber and is operative to vent the elongated tube and the air chamber to atmosphere.

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: Exemplary techniques and systems for interpolating left ventricular pressures are described. One technique interpolates pressures within the left ventricle from blood pressures gathered without directly sensing blood pressure in the left ventricle.

Abstract: A cuff for measuring volume and change in volume of a body appendage includes a hollow, rigid tube having an inner surface; and a bladder having an inner surface and an outer surface, the ends of the bladder being sealed to the ends of the tube to create an enclosed internal volume between the inner surface of the bladder and the inner surface of the tube and an external volume defined by the outer surface of the bladder and surrounded by the internal volume, the bladder having a normal, relaxed state, in which the internal volume is filled with a fluid and a retracted state in which the fluid is evacuated from the internal volume. Two stiffener ribs placed on the inner surface of the bladder, parallel to each other and to the lengthwise axis of the tube at diametrically opposite positions. A plurality of emitters and detectors arranged in a linear array are embedded in one of the ribs, so as to emit and detect light through the bladder.

Abstract: Biogenic information of the user is obtained through a camera unit and an authentication sensor and compared with biogenic information of a person with use authority has previously been stored, thereby discriminating whether or not the user has the use authority. When the user is authenticated, that is, if it is determined that the user is the person with the use authority, an electronic apparatus permits the user to use each function and operate. The authentication of the user is executed when the user wears the electronic apparatus. After he removes it, the authentication result is not held, thereby disabling a person without the use authority to use the electronic apparatus. The biogenic information (physical feature) of the user is detected and the personal authentication can be executed without requiring the user to execute the annoying inputting operation for the personal authentication.

Abstract: A non-invasive arterial blood pressure monitor uses an inflatable cuff that incorporates the first bladder that is filled with non-compressible liquid or gel. The bladder can be pressurized by an action of a pressurizing device superimposed onto its outer surface. In a preferred embodiment, a pressurizing device is an air-filled second bladder being connected to an air pump and bleed valve. The first bladder is positioned between the patient's body and the second bladder. During operation, the second bladder compresses the first bladder, which, in turn, compresses the patient's artery against the supporting bone. The mechanical coupling between the blood-filled artery of a patient and the liquid-filled bladder of a dual-bladder cuff is improved for detecting pressure oscillations in a broad frequency range. The pressure sensor that is coupled to the first bladder also functions as a hydrophone for picking-up the mechanical oscillations from any part of the occluded limb or digit.

Abstract: A system and method are provided for sensing cardiac electrogram (EGM) signals and ventricular pressure signals and for using the sensed EGM and sensed pressure signals for estimating stroke volume (SV). A measure of cardiac output can be computed from the estimated SV and a heart rate determined from the EGM signals. The sensed ventricular pressure signal and the sensed EGM signal are used to derive landmark points such as an estimated pulmonary diastolic pressure, a mean pulmonary artery pressure, a peak right ventricular pressure (RVP), and various time intervals used in computing an area or a pulse contour integral. The pulse contour integral is used to estimate SV. The estimated pulmonary diastolic pressure, mean pulmonary artery pressure and CO computed from the estimated SV can be used to compute a pulmonary vascular resistance.

Abstract: A blood pressure measurement apparatus for use in association with a blood pressure measuring cuff includes a housing having an upper shell and a lower shell defining an interior chamber and a replaceable module disposed within the interior chamber. The replaceable module houses a pump for inflating the blood pressure measuring cuff and a vent valve for venting the blood pressure measuring cuff. A cuff pressure sensor is provided within the interior chamber, either within or externally of the replaceable module. A control circuit for controlling the pump and the vent valve is provided on a circuit board disposed externally of the replaceable module. A power pack may be provided within the replaceable module for supplying electric power to the pump, the valve, the control circuit and other components within the interior chamber.

Abstract: An electronic blood pressure monitor includes an activation controller for exerting control in response to a signal representative of an instruction received from a user to selectively activate a plurality of functions included in first and second function groups of the electronic blood pressure monitor. The first function group includes a measurement function provided by a blood pressure measurement unit and the second function group includes an information changing function associated with erasing a measured value or changing a set value. The activation controller includes a determining unit for determining whether the electronic blood pressure monitor is started by a specific function, and a setting unit driven by a decision made by the determining unit to set the second function group in an activatable state or an inactivatable state.

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 blood pressure meter using a viscoelastic cuff, and a mobile terminal having the blood pressure meter. The blood pressure meter includes a blood pressure sensor for measuring variation in blood pressure, a blood flow sensor for measuring variation in blood flow, a cuff that elastically compresses a body part and decompresses the body part due to its viscoelasticity, and a control unit that analyzes signals measured by the blood pressure sensor and the blood flow sensor and calculates blood pressure. The blood pressure meter is detachably connected to a mobile terminal body, and can be small and portable. It is possible to measure the blood pressure precisely even when the cuff is fitted onto a finger, thereby improving the reliability of the blood pressure measurement. By using the viscoelasticity of the cuff and auxiliary decompressing, it is possible to check the blood pressure at all times.

Abstract: A vital sign monitoring system that can be used with multiple patients and utilizes historic patient data information for the patient to optimize the process of obtaining current vital sign measurements. Each patient is identified with a unique patient identification device that is automatically detected by the vital sign monitor. The vital sign monitor communicates with a medical records database and obtains historic patient data information for the patient identified by the patient identification device. The historic patient data information can be utilized by the vital sign monitor to set alarm limits for the vital sign measurements and automatically control the operation of an NIBP monitor for the specific patient.

Abstract: A plug-in connector for medical tubes is provided with a first plug-in part (10) and a second plug-in part (30), wherein the second plug-in part (30) extends around the first plug-in part (10) in the plugged-together state. The second plug-in part (30) has at least one forwardly protruding snap-in element (32), which has at its front end at least one inwardly protruding projection (34). The inwardly protruding projection is provided for meshing (engaging) with a complementary recess (14) in the outer surface of the first plug-in part (10) in order to thus hold the second plug-in part (30) fixed in the axial direction on the first plug-in part (10) due to the projection (34) meshing with the recess (14).

Abstract: A method of measuring the instantaneous arterial blood pressure and compliance and the device thereof are disclosed. The method identifies a critical depth under the skin. At this critical position, the arterial mean blood pressure is equivalent to the mean blood pressure obtained on the skin. The variation in the arterial mean blood pressure is tracked and controlled to maintain the equivalence between the mean blood pressure measured on the skin and the arterial mean blood pressure. In this case, the compliance of the muscle tissues remains invariant. Therefore, the variation measured on the skin is simply the behavior of the blood vessel. Using the skin-artery correlation, the invention can obtain the instantaneous blood pressure after some computation and the dynamic compliance at the critical position.

Abstract: A blood pressure monitor having a wireless transmitter is disclosed. A pressure sensor measures blood pressure data from a target, and the blood pressure data is transmitted to a remote device through the wireless transmitter. In one embodiment, the remote device is a mobile phone or a PDA. An alternate blood pressure monitor having an electronic display unit displaying the instantaneous pressure inside a cuff is also disclosed. In an embodiment, the blood pressure monitor computes the blood pressure value of the target, and the user can choose the measuring mode of the blood pressure monitor.

Abstract: A system and method for monitoring blood pressure of a wearer has an inflatable arm cuff that is selectably inflatable to differing air pressures that incorporates a fabric having both a light transmission property and a light reflection property when the fabric is illuminated with light having wavelength(s) in the range from about 400 to about 2200 nanometers. A radiation source and a detector are attached to the fabric in relative positions such that the reception of incident radiation by the detector is directly affected by a change in the amount of light transmitted through the fabric relative to the amount of light reflected by the fabric as the fabric stretches in response to motion in the body of a wearer due to changes in the flow of blood through an artery disposed beneath the fabric occurring in consonance with variations in the air pressure within the inflatable cuff.