Abstract: A three-tier cyclone dust bin filtration system and a vacuum cleaner comprising the system. The filtration system comprises a tier one filtration apparatus and a spiral tier two dust-air separation apparatus in communication with an air outlet of the tier one filtration apparatus and provided with two tiers of filtration structures, where the spiral tier two dust-air separation apparatus is detachably fixed onto the tier one filtration device. The vacuum cleaner comprises a floor brush, a push rod, a main machine, and the three-tier cyclone dust bin filtration system.

Abstract: A cleaner head for a vacuum cleaner includes: a body having a proximal end and a distal end; an agitator, an axis of rotation R1 of the agitator being substantially parallel to a longitudinal direction of the body; a motor configured to cause the agitator to rotate; and a joint configured to turnably connect a suction pipe to the body. The joint is positioned closer to the proximal end than to the distal end. The body includes a second suction channel configured to communicate with a first suction channel inside the joint, and a bulkhead configured to separate an agitator chamber and the second suction channel from each other. The second suction channel extends substantially parallel to the axis of rotation of the agitator. The bulkhead includes at least one air vent from the agitator chamber to the second suction channel.

Abstract: A robot cleaner comprising: a cleaner body including a controller, the cleaner body having a dust container accommodation part formed therein; a wheel unit mounted in the cleaner body, the wheel unit of which driving is controlled by the controller; and a dust container detachably coupled to the dust container accommodation part, wherein a first opening and a second opening are disposed at the same height in an inner wall of the dust container accommodation part, wherein the dust container includes: an entrance and an exit, disposed side by side along the circumference of the dust container, the entrance and the exit, respectively communicating with the first opening and the second opening when the dust container is accommodated in the dust container accommodation part; and a flow separating part extending downwardly inclined along the inner circumference of the dust container, the flow separating part separating the flow of air introduced into the entrance from the flow of air discharged toward the exit to b

Abstract: The present invention relates to a nozzle arrangement (10) of a cleaning device (100) for cleaning a surface (20), comprising: —a nozzle housing (28); —a rotating brush (12) that is rotatable about a brush axis (14) and comprises a substantially cylindrical core element (52) with flexible brush elements (16) that are arranged on a circumferential surface (56) of the core element (52), wherein said brush elements (16) are configured to contact the surface to be cleaned (20) and pick up dirt and liquid particles (22, 24) from the surface to be cleaned (20) during a rotation of the rotating brush (12); —a drive for driving the rotating brush (12); —a liquid supplying arrangement (58) for supplying a cleansing liquid (68) to the rotating brush (12); —a wiping element (32) for wiping dirt and liquid particles (22, 24) across or off the surface to be cleaned (20), wherein said wiping element (32) extends along a longitudinal direction (48), which is arranged substantially parallel to the brush axis (14), and wherei

Abstract: The present disclosure discloses a robot cleaner, including a cleaner body; and a sensing unit disposed in the cleaner body, wherein the sensing unit includes a rotating body configured to be horizontally rotatable around a rotation shaft passing through an inside of the cleaner body; a sensing unit mounted on one side of the rotating body to sense a feature or an obstacle in the vicinity of the cleaner body; and a tilting unit installed inside the rotating body to vertically tilt the sensing unit.

Abstract: A free-floating, hinged release lever on an incorporated track to a three-sided extruded channel housing, which holds multiple magnets with opposite polarity. The housing has a steel top plate to allow for centering a female ACME connector for the attachment of a handle and to allow for an axle at each end to hold wheels for ease of conveyance. After the three-sided extruded channel housing—encapsulated by the free-floating, hinged release lever—has collected ferrous debris, the release lever is pushed away from the housing to allow for easy removal of ferrous material by it falling off by gravitational force without the operator having to be in contact with the metal debris. The magnets remain in place during the entire removal process.

Abstract: A cleaning system includes a container with a base surface, a top edge, an opening, and side walls integrally formed on the base surface, and designed for holding a cleaning liquid. A mop carrier has a carrier plate, an articulated joint, and a rod handle fastened to the articulated joint. A wringer has a wringing roller, a housing partially enclosing the wringing roller, and a shaft is attached to the housing with an operating handle. On the housing, guide elements are formed leaving a feedthrough gap between the wringing roller and the guide elements, the gap width of which is adjusted to the thickness of the carrier plate of the mop carrier fitted with a mop cover. The wringer is mountable on the carrier plate of the mop carrier and is displaceable thereon in the direction of the base surface, while the mop carrier is fixed in a mop carrier holder.

Abstract: The invention proposes a cleaning device (110) for cleaning articles (116) to be cleaned. The cleaning device (110) comprises at least one cleaning chamber (114) and at least one application device (120) for applying at least one cleaning fluid to the articles (116) to be cleaned in the cleaning chamber (114). The cleaning device (110) further comprises at least one controller (157) which is designed to actuate the cleaning device (110) for carrying out at least two operating modes. The controller (157) is further designed to detect at least one utilization variable. The utilization variable characterizes a current utilization of the cleaning device (110). The controller (157) is further designed to assign at least one weighting to the at least one utilization variables.

Abstract: The inventive in basin cleaning apparatus comprises a body with an outer cleaning surface and a cleaning slot, a base, and bristles attached to the body which is particularly useful for cleaning dishes.

Abstract: An improved floor mat apparatus is a low profile, rectangular, shoe cleaning apparatus that has an inner volume with two spaced apart rollers mounted within the inner volume that an elongated mat with the ends joined together forming a continuous loop, travels around. A motor turns a first roller and the second roller adjusts to remove slack to tighten the mat. The top surface of the housing is open to expose the mat for cleaning shoes upon. When the mat becomes dirty, the rollers turn via a button located on a panel situated adjacent to one end of the mat and a removable collection chamber at one end of the mat collects debris and helps remove dirt from the mat via a vibrator and brush.

Abstract: Provided are an image processing apparatus and an electronic endoscope system that can acquire an observation image that is natural overall and has excellent visibility, while highlighting characteristic parts such as affected parts and parts that are to be examined. A normal observation image captured using normal light and a narrow-band observation image captured using narrow-band light that has a bandwidth narrower than that of normal light are input to the observation image input unit. A characteristic part extraction unit extracts a characteristic part that is included in a narrow-band observation image. A highlight display unit displays a single image in which a part of the normal observation image, the part corresponding to a characteristic part that is included in the narrow-band observation image, is highlighted using the characteristic part.

Abstract: A medical circuit board includes a substrate on which a wiring pattern is formed, a plurality of electronic components mounted in a mounting area on the substrate, a resinous sealing member covering the plurality of electronic components, with which the plurality of electronic components are sealed to the substrate, and a detection unit provided in an area other than the mounting area on the substrate and detecting an infiltration of a liquid from an interface between the substrate and the sealing member into the mounting area. At least a part of the detection unit is covered with the sealing member and sealed with the sealing member to the substrate.

Abstract: A medical device comprising an endoscope accessory for attachment to the working end of an endoscope. The coupler device provides a flexible working channel extension from the endoscope so that instruments can exit the endoscope at various angles. The device also provides a protective cover to reduce the ingress of debris, fluid, bacteria, or other unwanted matter from the working end of the endoscope which could lead to infection.

Abstract: The present invention relates to a tip protector device for a medical instrument, such as an endoscope or borescope. The tip protector device according to the present invention comprises a housing configured to releasably receive a tip of a medical instrument, a clamping system configured to retain by clamping the tip received by the housing in a retaining position and a locking system configured to perform a locking step, wherein the locking step comprises, successively, the locking and unlocking of the clamping system in the retaining position. The tip protector further comprises a blocking element, wherein the blocking element is configured to block the locking system after repeated use of the device. The present invention also relates to a method of protecting the tip of a medical instrument.

Abstract: The present invention aims to make it capable of holding organs more safely. Provided is a medical support arm apparatus, including: an arm unit (510) whose driving is controlled by force control; and a retractor, provided on a front end of the arm unit (510), that holds an organ of a patient during surgery.

Abstract: Medical devices, systems and methods that are useable to facilitate transnasal insertion and positioning of guidewires and various other devices and instruments at desired locations within the ear, nose, throat, paranasal sinuses or cranium.

Abstract: The tracheoscope catheter bending structure mainly includes a main elastic spring ring, two small elastic spring rings and a fixed seat, wherein the main elastic spring ring is arranged inside a hose at the far end of a tracheoscope catheter; the two small elastic spring rings are arranged at the internal opposite two side positions of the main elastic spring ring; two pull wires provided for a tracheoscope are respectively penetrated through the two small elastic spring rings; the fixed seat is held at the farthest end of the hose; the far ends of the two pull wires respectively pass through penetration holes at the two sides of the fixed seat and are fixed; the other ends of the pull wires are extended and are combined with a control mechanism inside a handle.

Abstract: A surgical system includes a bronchoscope, an extended working channel defining an elongated passageway and adapted to extend through the bronchoscope, and a valve in fluid communication with the passageway of the extended working channel. The surgical system further includes an elongated surgical instrument configured and dimensioned to be inserted through the extended working channel. During operation, a fluid is able to flow from the valve and through the extended working channel such that the fluid travels within an annular area surrounding the elongated surgical instrument positioned within the extended working channel.

Abstract: A medical light source device includes: a first solid state light emitting element configured to emit first color light; a second solid state light emitting element configured to emit second color light; a third solid state light emitting element configured to emit third color light; a fourth solid state light emitting element configured to emit fourth color light; and a color synthesis optical device configured to synthesize the first color light, the second color light, the third color light, and the fourth color light. The color synthesis optical device includes a first color separation surface, a second color separation surface disposed to intersect with the first color separation surface, and a third color separation surface disposed on a light path latter stage with respect to the first color separation surface and the second color separation surface.

Abstract: An illumination unit includes a light guide and a light converter. Wettability which a distal end side surface of the light guide has for an enclosing member of the light converter is lower than wettability which a distal end face has for the enclosing member.

Abstract: An endoscope system includes an endoscope having an image pickup section and a processor device for an endoscope, and optically communicates signals through a scope-side connector and a processor-side connector. In the endoscope system, an optical communication section is constituted by an image signal transmission section and an image signal reception section, and windows and are arranged. An optical communication section is constituted by a scope-side signal transception section and a processor-side signal transception section, and windows and are arranged. The endoscope system includes: a first air blowing section and a second air blowing section for removing dirt adhered on the windows; and a control section that controls the first air blowing section and the second air blowing section.

Abstract: The invention provides an advantageous system and corresponding method for measuring a plurality of aspects of vision. It is a computer-implemented, user-interactive system which can be used by practitioners such as opticians to measure and assess a patient's visual acuity. It comprises a handheld computing device arranged and configured to present at least one optotype to a user (patient) within a gamified environment. This aspect of the invention provides the advantage that it is more easily used by certain types of patients, such as children, the elderly or those suffering from medical/clinical conditions who would typically struggle to use traditional measuring tools.

Abstract: A system for examination of an eye of a subject includes a laser for irradiating a select portion of the retina with a short pulse light having a wavelength of about 800 nm to about 1400 nm at an intensity effective to stimulate two photon induced isomerization of visual pigments in the select portion of the retina of the subject's eye, and an input device to permit the subject to input a reaction or response of the subject to the irradiating light.

Abstract: This disclosure relates to the field of Optical Coherence Tomography (OCT). This disclosure particularly relates to an OCT system that generates an image with improved quality. In one example, the OCT system may generate an improved Bscan image by using multiple shaping functions to shape the raw A-scans. In another example, the OCT system may generate the improved B-scan image by forming multiple apodization patterns on a detector and acquiring raw A-scans by using the apodization patterns. A better diagnosis of a health condition may be reached by using the improved images generated by the OCT system of this disclosure.

Abstract: Methods and apparatus, including computer program products, are provided for remote monitoring. In some example implementations, there is provided a method. The method may include receiving, at a remote monitor, a notification message representative of an event detected, by a server, from analyte sensor data obtained from a receiver monitoring an analyte state of a host; presenting, at the remote monitor, the notification message to activate the remote monitor, wherein the remote monitor is configured by the server to receive the notification message to augment the receiver monitoring of the analyte state of the host; accessing, by the remote monitor, the server, in response to the presenting of the notification message; and receiving, in response to the accessing, information including at least the analyte sensor data. Related systems, methods, and articles of manufacture are also disclosed.

Abstract: The present invention relates to a flexible pressure-sensing pad and manufacturing method thereof. The flexible pressure-sensing pad includes a first fabric substrate layer, a second fabric substrate layer, and a fabric barrier layer provided between the first fabric substrate layer and the second fabric substrate layer. The first fabric substrate layer includes a first electrode and the second fabric substrate layer includes a second electrode. The fabric barrier layer has multiple through holes. The first electrode and the second electrode are electrically connected with a controller. Compared with the current pressure-sensing pad, the present invention is thinner and more flexible, has superior breathability and waterproofness, does not generate an irritating noise, creates a quiet recuperative environment for patients and can sense an external force over the entire pressure sensing pad without any blind spots, thereby providing better user experience.

Abstract: A device for measuring a physiological parameter of a user carrying the device that includes a sensor having at least two sensor elements for detecting a sensor signal, a carrier configured to carry the sensor, and electrical contacts of the sensor elements that lead on, into or through the carrier. One or more frames carried by the carrier are formed around the sensor and/or the individual sensor elements, and an insulator material is filled between the one or more frames and the sensor and/or the sensor elements surrounded by a respective frame without covering a top surface of a respective sensor element facing away from the carrier.

Abstract: A system for monitoring parameters of an object is described. The system comprising: a monitoring unit configured for performing one or more monitoring sessions on an object and collecting data from an inspection region on the object over time and generating monitored data indicative of the inspected region, a stimulation unit configured and operable for applying at least one selected external stimulation field on the object during said one or more monitoring sessions, and a control unit configured for receiving the monitored data from the monitoring unit and determining one or more selected parameters. The stimulation unit is configured for providing said at least one selected external stimulation field directed toward said inspection region from two or more different directions.

Abstract: A thermoacoustic imaging device is provided having a transmitter configured to provide an electromagnetic transmit signal (e.g. a continuous sinusoidal signal) to an object being imaged. The transmit signal is a modulated continuous-wave signal based on a carrier frequency signal fc modulated at a modulation frequency at or near fm. The detector is further configured to receive an acoustic signal from the object being imaged, and is responsive to acoustic frequencies at or near 2fm. A non-linear thermoacoustic effect in the object being imaged generates the acoustic signal from the object being imaged. Spectroscopic maps could be generated and imaged object could be analyzed. The device enhances signal-to-noise ratio of the reconstructed image and reduces the requirement of peak power in thermoacoustic imaging systems. In addition, the generated pressure of the imaged object is separated from microwave leakage and feedthrough in frequency through the nonlinear thermoacoustic effect.

Abstract: A system and method for detecting and monitoring core body temperature are disclosed. The system includes a patch device and an electronic module coupled to the patch device. The method includes providing a patch device, coupling an electronic module to the patch device to provide a wearable device, and monitoring core body temperature of a user using the wearable device.

Abstract: The invention provides methods and systems for continuous noninvasive measurement of vital signs such as blood pressure (cNIBP) based on pulse arrival time (PAT). The invention uses a body-worn monitor that recursively determines an estimated PEP for use in correcting PAT measurements by detecting low frequency vibrations created during a cardiac cycle, and a state estimator algorithm to identify signals indicative of aortic valve opening in those measured vibrations.

Abstract: Vital sign sensor apparatuses which measures vital signs based on arterial pressure waveforms are described. In some embodiments, the apparatus includes an infrared sensor configured to capture at least a portion of an arterial pulse pressure waveform from a user. The apparatus further includes a processor configured to determine a maximum point for each of a plurality of peaks of the arterial pulse pressure waveform, and a corresponding first timestamp. The processor also determines one or more vital signs (e.g., a heart rate for a user, a heart rate variation of the user, a respiration rate of the user, and/or an arterial pulse pressure of the user) based at least in part on the plurality of maximum points and the plurality of corresponding timestamps. Related systems, methods, and articles of manufacture are also described.

Abstract: According to one embodiment, an apparatus comprising a portable monitoring device to be affixed to a user. The portable monitoring device including: 1) a set of one or more sensors to generate sensor data indicative of physical activity of a user when the portable monitoring device is affixed to the user; and 2) processing circuitry coupled with the set of sensors, to detect that the user has been sedentary for a period of time, and cause the portable monitoring device to alert the user responsive to the detection to encourage the user to move.

Abstract: A blood pump including a housing having an inlet element, the inlet element including a distal portion coupled to the housing and a proximal portion sized to be received within at least a portion of a heart of a patient and a rotor configured to rotate within the housing and impel blood from the heart. At least one pressure sensor is coupled to the proximal portion of the inlet element.

Abstract: A system for estimating breathing frequency and heartbeat frequency of a subject, comprises at least one ultra-wideband (UWB) transceiver, connected to at least one hardware processor, configured to: receive a plurality of readings from the UWB transceiver, each of the readings having a time and comprising a plurality of intensity values at the time, each of the intensity values having a corresponding distance value representing a distance between the UWB transceiver and the subject; determine a Range-Doppler map from the plurality of readings; analyze the Range-Doppler map to determine a breathing frequency value of the subject; perform null steering of a plurality of Doppler-map frequencies in the Range-Doppler map to nullify the breathing frequency value and integer multiples of the breathing frequency value to obtain a plurality of combined frequencies; and determine a heartbeat frequency value for which a plurality of computed frequencies corresponds with the plurality of combined frequencies.

Abstract: A method and a system for processing a heart rate (HR) in an electronic device are provided. The method includes detecting a photoplethysmography (PPG) signal, producing a first HR from the detected PPG signal, producing a second HR from the detected PPG signal, determining a resultant HR by analyzing the first HR and the second HR, and displaying the resultant HR.

Abstract: A method for synchronizing operation of a heart assist pump device to a patient's cardiac cycle includes obtaining a signal from a motor of a heart assist pump device and filtering the signal to remove noise. The method also includes determining a speed synchronization start point at which time the motor of the heart assist pump device will begin a change in speed of operation based on the filtered signal. The method further includes modulating a speed of the motor of the heart assist pump device to a target speed at the speed synchronization start point, thereby synchronizing the change in speed of operation with a patient's cardiac cycle.

Abstract: A monitoring device includes a biasing element having opposite first and second end portions, an earbud attached to the biasing element first end portion, and a sensing element attached to the biasing element second end portion. The earbud has a first mass, and the sensing element has a second mass that is less than the first mass. The biasing element is configured to urge the sensing element into contact with a portion of the ear when the earbud is inserted into the ear. The biasing element decouples motion of the earbud from the sensing element. The sensing element includes at least one energy emitter configured to direct energy at a target region of the ear and at least one detector configured to detect an energy response signal from the target region or a region adjacent the target region.

Abstract: A portable spot-check system configured to assess the validity of a measured physiological parameter. The spot-check device can take into consideration a variety of factors to determine whether a valid measurement exists. For instance, the considerations can include signal stability, interference, signal IQ, patient movement, sensor position, timing of that measurement, comparison to previous or acceptable measurements, cancellation of measurement by the patient, confidence of the measurement, etc. The spot-check device can track a number of valid measurements. In some instances, the spot-check device is configured to provide a specified number of available measurements. If a valid measurement is recorded, the spot-check device can decrement the remaining number of available measurements.

Abstract: A blood-vessel recognition blood-flow measurement method including: obtaining a real-time Doppler spectrum by performing a Fourier transform on a temporal waveform of the intensity of scattered light of laser light in a living body; calculating a normalized real-time Doppler spectrum and a normalized zero spectrum; calculating a region spectrum from a subtracted spectrum that is calculated through subtraction of these calculated spectra; calculating a PS reference spectrum by subtracting, from the region spectrum, the maximum value of the region spectrum in a predetermined PS reference region; calculating an average frequency on the basis of a computational spectrum that is obtained by replacing an element of which the PS reference spectrum is negative with zero; and determining a blood flow velocity by comparing the calculated average frequency with a predetermined threshold.

Abstract: The invention provides a system for measuring stroke volume (SV), cardiac output (CO), and cardiac power (CP) from a patient that features: 1) impedance sensor connected to at least two body-worn electrodes and including an impedance circuit that processes analog signals from the electrodes to measure an impedance signal (e.g. a TBEV waveform); 2) an ECG sensor connected to at least two chest-worn electrodes and including an ECG circuit that processes analog signals from the electrodes to measure and ECG signal; 3) an optical sensor connected to a body-worn optical probe and including an optical circuit that processes signals from the probe to measure at least one optical signal (e.g. a PPG waveform) from the patient; 4) a processing system, typically worn on the patient's wrist and connected through a wired interface to the optical sensor, and through either a wired or wireless interface to the TBEV and ECG sensors.

Abstract: A system, method and non-transitory computer readable storage medium for monitoring a perfusion of a patient. The system, method and computer readable storage medium receive an indication of a voltage applied across a chest of the patient via a first electrode, receive a measurement of a current across the chest of the patient, resulting from the applied voltage via a second electrode, generate an impedance-based respiratory rate waveform based on the applied voltage and the measured current, generate a Fourier Transform of the respiratory rate waveform relative to a heartbeat of the patient, isolate cardiac artifacts in the Fourier Transform and generate a perfusion waveform indicating a perfusion of a chest cavity of the patient based on the isolated cardiac artifacts.

Abstract: An intrauterine balloon apparatus to augment uterine birthing forces and assist fetal descent during parturition is provided. The body of the balloon apparatus begins packaged in a compressed state minimizing volume, enabling delivery through the birth canal. The apparatus is advanced to a proximal uterine location and deployed for operation by introducing a pressurized agent through its conduit, causing the body to expand and apply directional forces towards the infant and birth canal. The balloon body is shaped to apply pressures dispersed towards the infant and the bidirectional conduit enables fluid conduction as the infant descends. After the infant has successfully descended and been delivered through the birth canal, pressure within the balloon body is relieved through the conduit thereby collapsing the volume of the balloon body and enabling retraction through the birth canal.

Abstract: A system assists users in time and frequency analysis of magnetoencephalography (MEG) signals. In one aspect, a system includes an analysis module, a configuration module and a user interface. The analysis module performs a time and frequency analysis of the MEG signal, for example a short time Fourier transform (STFT) or a continuous wavelet transform (CWT) analysis. The analysis is parameterized by a parameter set that affects the time and frequency resolution of the analysis, for example window size and overlap size for STFT or center frequency and decay parameter for CWT. The configuration module automatically determines or assists the user to determine correct values for the parameter set.

Abstract: Electrocardiograms can be analyzed in the time-frequency domain, following conversion into time-frequency maps, to determine characteristics or features of various waveforms, such as waveform morphology and/or the amplitude(s) and location(s) (in time and/or frequency) of one or more extrema of the waveform. Based on comparison of the extrema against thresholds and/or against each other, disease conditions may be determined.

Abstract: A catheter includes an elongated body having a longitudinal axis, a distal assembly distal the elongated body, the distal assembly having a tapered helical form comprising a larger, electrode-carrying proximal loop and a smaller, softer distal loop, and a shape-memory support member extending through at least the proximal loop. For example, the helical loop subtends at least about 720 radial degrees, with the proximal loop subtending about 360 radial degrees, and the distal loop subtending about 360 radial degrees. The softer distal loop with a straight distal end atraumatically guides the distal assembly into a tubular region so that the larger proximal loop can sit on the ostium of the tubular region with improved electrode and tissue contact.

Abstract: In the present invention, a system that has a navigation signal delivered by one of a signal or navigation catheter or treatment catheter as directed by a controller for detection by the other of the navigation catheter or the a treatment catheter to navigate the treatment catheter to a specific point or area of interest using the detected navigation signal is provided. The system is operable in a method to perform the above utilizing the mapping function of the electrophysiology mapping and/or recorder system to energize electrodes on either the navigation catheter or treatment catheter to direct the treatment catheter to the area, region or point of interest.

Abstract: A method includes receiving an input mesh representation of a cardiac chamber, a set of measured locations on a wall tissue of the cardiac chamber, and a respective set of local activation times (LATs) measured at the locations. The input mesh is re-meshed into a regular mesh including regularized polygons. The set of measured locations and respective LATs is data fitted to the regularized polygons. Respective LAT values are iteratively calculated for the regularized polygons, so as to obtain a cyclic EP activation wave solution over the regular mesh that take account of reentry of an EP wave. An electroanatomical map including the cyclic EP activation wave overlaid on the regular mesh is presented.

Abstract: A system for processing cardiac activation information associated with a complex rhythm disorder identifies a location of the heart rhythm disorder by determining activations within cardiac signals obtained at neighboring locations of the heart and arranging the activations to identify an activation trail. The activation trail may define a rotational pattern or radially emanating pattern corresponding to an approximate core of the heart rhythm disorder.

Abstract: Methods and systems are provided for detecting arrhythmias in cardiac activity. The methods and systems declare a current beat, from the CA signals, to be a candidate beat or an ineligible beat based on whether the current beat satisfies the rate based selection criteria. The determining and declaring operations are repeated for multiple beats to form an ensemble of candidate beats. The method and system calculate a P-wave segment ensemble from the ensemble of candidate beats, perform a morphology-based comparison between the P-wave segment ensemble and at least one of a monophasic or biphasic template, declare a valid P-wave to be present within the CA signals based on the morphology-based comparison, and utilize the valid P-wave in an arrhythmia detection process to determine at least one of an arrhythmia entry, arrhythmia presence or arrhythmia exit.