128 results about "Monitoring respiration" patented technology

A system and method for monitoring respiration including sensing a signal that varies with respiration, deriving a respiration parameter, applying criteria for detecting a respiration disturbance and determining one or more respiratory disturbance metrics. The system preferably includes an implantable sensor with an associated implantable medical device such that chronic respiration monitoring is possible. The implantable medical device may execute methods for detecting and measuring respiratory disturbances or may store data to be transferred to an external device for detecting and measuring respiratory disturbances. Respiratory disturbance detection may trigger a responsive action such as physiological data storage, a change in therapy delivery, or a clinician warning. Assessment of cardiac function may be made based on metrics of respiratory disturbances or a measure of circulatory delay time following detection of a respiratory disturbance.

The present invention relates to a device and method for monitoring for sleep disordered breathing or other types of disordered breathing such as Cheyne-Stokes breathing. More specifically, a device and method for detecting disordered breathing is provided that monitors a physiological parameter, which becomes cyclical due to apnea-hyperpnea (or arousal) alternation and provides the basis for the determination of a number of breathing disorder metrics.

A system and method for delivering a flow of breathing gas to an airway of a patient. The system monitors a characteristic that varies based on variations of the flow of the breathing gas and determines a Target Flow for the gas to be delivered to the patient based on the monitored characteristic. The Target Flow is set to a level sufficient to treat Cheyne-Stokes respiration or a sleep disordered breathing event. The system also alters the Target Flow based on a determination that the patient is experiencing a sleep disordered breathing event. In a further embodiment, the system determines an apnea detection time (Tapnea) as Tinsp plus a constant, and delivers a machine triggered breath if an amount since the start of inspiration reaches Tapnea. Yet another embodiment, monitors the characteristic during an inspiratory phase of a respiratory cycle, and controls the flow of gas during the inspiratory phase of the respiratory cycle based on a result of this comparison.

A method and corresponding system for providing breathing cues includes monitoring respiration of a user and determining a user breathing frequency including an inspiration portion and an expiration portion of the breathing, supplying a high positive air pressure to the user during the inspiration portion and a low positive air pressure during the expiration portion in substantial synchronicity with the user's respiration, comparing the user breathing frequency with a target breathing frequency, and when the user breathing frequency is greater than the target breathing frequency, increasing, in a predetermined manner, a time over which the high positive air pressure is supplied to the user, and adjusting a time over which the low positive pressure air pressure is supplied to the user.

What is disclosed is a system and method for monitoring respiration of a subject or subject of interest using a thermal imaging system with single or multiple spectral bands set to a temperature range of a facial region of that person. Temperatures of extremities of the head and face are used to locate facial features in the captured thermal images, i.e., nose and mouth, which are associated with respiration. The RGB signals obtained from the camera are plotted to obtain a respiration pattern. From the respiration pattern, a rate of respiration is obtained. The system includes display and communication interfaces wherein alerts can be activated if the respiration rate falls outside a level of acceptability. The teachings hereof find their uses in an array of devices such as, for example, devices which monitor the respiration of an infant to signal the onset of a respiratory problem or failure.

The present invention relates to a respiratory gas consumption monitoring method and monitoring device that is portable and has high measurement accuracy, for enabling the analysis and prediction of the respiratory behavior of subjects employing a variety of different types of breathing apparatuses in water, etc. Respiratory gas consumption monitoring device (20), for monitoring the respiratory gas consumption of the user of a breathing apparatus (1) in which a respiratory gas (G) inside a high pressure gas container (2) is reduced in pressure at pressure regulator (4) and supplied to a breathing mask (10), is provided with:a primary pressure sensor (21) for detecting the pressure prior to pressure reduction at pressure regulator (4);a temperature sensor (22) for correction;an environmental pressure sensor (23) for detecting the environmental pressure;an amplifier (24) for amplifying the signals from the aforementioned sensors;an A / D converter (25) for performing analog / digital conversion of the amplified signal;a data logger (26) for recording and storing the analog / digital converted signals; anda display (27) for display.In addition, as needed, a computer (X) for calculating, analyzing, and predicting data may be housed in housing (28), and connected to breathing apparatus (1) by connecting primary pressure sensor (21) to a high pressure opening (8) of pressure regulator (4) using a high pressure hose (29).

The present invention relates to a monitor respiration movements device to be used on humans and also on animals for controlling the respiration movements and to control the apnea periods on infants, wherein the device reduces the mortality rate caused by the sudden instant death syndrome (SIDS), wherein the device comprises an accelerometer and a micro controller, with the accelerometer including a motion detector and a plurality of output plugs, the micro controller includes a plurality of input sockets, and wherein the plurality of output plugs are connected to the plurality of input sockets and the micro controller includes signal outputs which are connected to an alarm.

A side-stream respiration monitoring sensor includes a body having a first end, a second end, and a detecting section disposed between the respective ends. The detecting section includes a first port and a second port positioned on generally opposite sides of a restricting member. The restricting member extends into a flow path formed through the body such that a pressure differential is generated between the first port and the second port. A sampling port is positioned downstream relative to a patient from the first and the second port and configured to acquire a respiration sample. The sensor is constructed to monitor respiration performance of premature infants “preemies”, or the like.

A method for determining respiration rate in a patient can include various parts. The respiration rate can be determined by measuring the heart's S2 split. The S2 split can be identified by observing the timing of the heart sounds. Other respiration related information, such as respiration phase and the occurrence of apnea, can be identified as well. A respiration monitor of this type may be useful for monitoring sub-acute patients, and outpatients. A sensor for the respiration monitor and an electrode for an ECG monitor may be combined into a single probe.

Described is system and method of monitoring respiratory airflow and oxygen concentration. The system may include a first sensor producing data corresponding to an airflow in a respiratory system of a body; a second sensor producing data corresponding to an oxygen concentration in the body; a generator supplying a pressurized airflow; an oxygen source supplying oxygen; a conduit through which the pressurized airflow and oxygen are delivered to the respiratory system; and a processing arrangement for processing the data from the first and second sensors and for controlling the generator and the oxygen source based on the processed data.

A device for monitoring respiration comprises a duct, a flow restricting element in the duct, and a pressure sensor arranged in the duct. The pressure sensor measures a pressure drop across the flow restricting element as a pressure difference between a pressure at a location in the duct on a first side of the flow restricting element and a substantially constant pressure on a second side of the flow restricting element opposite the first side.

The present disclosure pertains to a system and method for monitoring usage of a respiratory medicament delivery device. Regular use of a respiratory medicament delivery device at intervals prescribed by a doctor may be critical to a subject's health. The system described herein is configured to monitor usage of a respiratory medicament delivery device such that manual tracking of a patient's adherence to a dosage plan by a doctor, for example, is not required. Monitoring usage of the medicament device delivery device may allow the doctor to judge the adherence of the subject to the dosage plan and encourage increased adherence. Improved adherence by the subject may result in improvement in the condition of the subject and economic benefits including reducing costs associated with re-hospitalization after discharge. In some embodiments, the system comprises a medicament delivery device and a usage event monitoring device.

A system and method of monitoring a patient, that in one embodiment, comprises determining a flow of gas generated by respiration of the patient, identifying a respiratory event entry and a respiratory event exit based on the flow of gas generated by respiration of the patient, and identifying a respiratory event when the identification of the respiratory event entry is followed by the identification of respiratory event exit.

A system and method for monitoring respiration including sensing a signal that varies with respiration, deriving a respiration parameter, applying criteria for detecting a respiration disturbance and determining one or more respiratory disturbance metrics. The system preferably includes an implantable sensor with an associated implantable medical device such that chronic respiration monitoring is possible. The implantable medical device may execute methods for detecting and measuring respiratory disturbances or may store data to be transferred to an external device for detecting and measuring respiratory disturbances. Respiratory disturbance detection may trigger a responsive action such as physiological data storage, a change in therapy delivery, or a clinician warning. Assessment of cardiac function may be made based on metrics of respiratory disturbances or a measure of circulatory delay time following detection of a respiratory disturbance.

A method and corresponding system for providing breathing cues includes monitoring respiration of a user and determining a user breathing frequency including an inspiration portion and an expiration portion of the breathing, supplying a high positive air pressure to the user during the inspiration portion and a low positive air pressure during the expiration portion in substantial synchronicity with the user's respiration, comparing the user breathing frequency with a target breathing frequency, and when the user breathing frequency is greater than the target breathing frequency, increasing, in a predetermined manner, a time over which the high positive air pressure is supplied to the user, and adjusting a time over which the low positive pressure air pressure is supplied to the user.

A system (300) for measuring a metabolic parameter. The system includes an integrated airway adapter (20, 100, 200) capable of monitoring any combination of respiratory flow, O2 concentration, and concentrations of one or more of CO2, N2O, and an anesthetic agent in real time, breath by breath. Respiratory flow may be monitored with differential pressure flow meters under diverse inlet conditions through improved sensor configurations which minimize phase lag and dead space within the airway. Molecular oxygen concentration may be monitored by way of luminescence quenching techniques. Infrared absorption techniques may be used to monitor one or more of CO2, N2O, and anesthetic agents.

A method for delivering a medicament to a mechanically ventilated patient receiving a flow of breathing gas comprises delivering a respiratory maneuver to such a patient, monitoring the physiological effects of the respiratory maneuver on such patient, automatically establishing an optimized respiratory maneuver in response to the monitored physiological effects, and delivering the optimized respiratory maneuver to such a patient. A system for delivering an aerosolized medicament to a ventilated patient is also provided.

The present invention relates to a monitor respiration movements device to be used on humans and also on animals for controlling the respiration movements and specially to control the apnea periods on infants. Furthermore the present invention is related to reduce the mortality rate caused by the sudden instant death syndrome (SIDS). The device comprises an accelerometer and a micro controller, said accelerometer includes a motion detector and a plurality of output plugs, said micro controller includes a plurality of input sockets, wherein said plurality of output plugs are connected so said plurality of input sockets and the micro controller includes signal outputs which are connected to an alarm means.

Sidestream sampling of gas to determine information related to the composition of gas at or near the airway of a subject is implemented. From such information one or more breathing parameters of subject 12 (e.g., respiratory rate, end-tidal CO2, etc.) are determined, respiratory events (e.g., obstructions, apneas, etc.) are identified, equipment malfunction and / or misuse is identified, and / or functions are performed. To improve the accuracy of one or more of these determinations, information related to pressure at or near the airway of subject is implemented. This information may include detection of pressure at or near a sidestream sampling cell.

This invention is directed to devices and methods for assessing a patient. The devices have at least one impedance measuring element functionally connected to a programmable element, programmed to analyze an impedance measurement, and to provide an assessment of at least one respiratory parameter of the patient. Preferably the device includes electronics which aid in calibration, signal acquisition, conditioning, and filtering.

Methods and apparatus provide automated circuit disconnection monitoring such as for a respiratory apparatus or system. Disconnection of a patient circuit, including a patient interface and air delivery circuit, may be detected and a message or alarm activated. In some versions, detecting occurrences of circuit disconnection event(s), such as by a processor, may be based on an instantaneous disconnection parameter as a function of a disconnection setting. The disconnection setting may be determined based on patient circuit type. The instantaneous disconnection parameter may be determined from detected pressure and flow rate, and may be, for example, a conductance value or an impedance value. Disconnection events may be qualified by one or more detected respiratory indicators. In some cases, instantaneous impedance or conductance may be used to assess re-connection of a patient circuit, detection of flow starvation, determine breath shape for triggering and cycling and to detect patient or circuit obstructions.

The invention resides in a respiratory sonification monitoring method and system for monitoring respiration in a subject including the use of capnometric means for measuring carbon dioxide concentrations, flowmeter means for measuring gas flow and volume of gas; means adapted to process into digital information, signal output from the capnometric means and the flowmeter means, sound synthesizer means adapted to convert the digital information into synthesised audio output, wherein, changes in respiratory flow during inhalation and exhalation, and changes in end tidal carbon dioxide concentrations (ETC02) and cumulative tidal volume (cumVt) of the subject can be represented as changes in synthesised sound heard through a loudspeaker, headphone or ear piece.

The present invention relates to a device, system and method for sensor position guidance to guide a user or the subject to place a wearable sensor to the optimum position at the subject's body. The device comprises an image data input (40) for obtaining image data of at least a subject's body area showing motion of said body area, an analyzer (41) for analyzing the obtained image data to determine one or more locations of the body area showing maximal movement caused by respiration and / or heart beat, and a guidance output (42) for selecting from the determined one or more locations an optimum location based on the strength of movement and for providing guidance information indicating the optimum location, at which a wearable sensor (6) for monitoring respiration and / or heart rate should be placed to said subject's body.

The invention relates to a treatment quality management method of a breathing machine. The method comprises: step one, monitoring flowing speed and waveform information of a pipe of a breathing machine; step two, monitoring pressure and waveform information in the pipe of the breathing machine; step three, monitoring oxygen concentration information in an oxygen channel and / or breathing machine pipe; step four, monitoring oxygen flow information in the oxygen channel and sending the information to a cloud and a monitoring terminal; step five, monitoring blood oxygen saturation and pulse rate information in blood of a breathing machine user and sending the information to the cloud and the monitoring terminal; step six, monitoring CO2 pressure dividing information in alveolar of the breathing machine user or a CO2 waveform of an exhalation end in a breathing machine pipe line and sending the monitored information to the cloud and the monitoring terminal; and step seven, monitoring comparison of the terminal and a preset threshold value and determining whether treatment of the breathing machine is normal. With the method, the overall progress is improved based on real-time monitoring of feedback of equipment data and patient data.

The invention also relates to an optical sensor for a photoplethysmography measurement, comprising a light unit 1 with a light emitter 2 for emitting light into tissue of a patient 8 and / or a light detector 3 for detecting a part of the emitted light after interaction with the tissue, wherein the light unit is embedded in an elastic material 4. The invention further relates to a device for contactless respiration monitoring of a patient 8, comprising: a distance sensor for consecutively detecting the temporal distance variations relative to the patient's chest 12, preferably based on electromagnetic waves; and a calculating unit for determining the breathing activity based on the detected temporal distance variations. The invention is especially useful for providing a reliable and easy to use possibility for simultaneously monitoring respiration action, blood pressure and heart rate with a handheld device which can be used for spot-checking the vital parameters of patients in hospitals.

A method for use in an implantable medical device comprises the steps of monitoring respiration with an amplifier having a gain, generating a moving apneic threshold based on recent respiration cycles, accumulating differences between amplitudes of respiration cycles and the moving apnea detection threshold and comparing the accumulated differences against an apnea detection threshold to detect the onset of an episode of apnea. The method further comprises measuring respiration levels upon detecting the onset of apnea, confirming the episode of apnea based upon the respiration levels measured upon detecting the onset of apnea; and adjusting one of the gain of the amplifier and the apnea detection threshold so that the time from the detection of onset of apnea to the time of confirmation of the episode of apnea is within a predetermined time range following the detection of the onset of apnea.

The invention relates to a PXI-bus-based respiration process three-dimensional electrical impedance imaging system and an imaging method thereof. According to the PXI-bus-based respiration process three-dimensional electrical impedance imaging system and the imaging method thereof, the three-dimensional electrical impedance imaging system which is in three layers and comprises 48 electrodes is constructed by means of highly integrated hardware and software tool kits of the PXI bus; a pair of adjacent exciting electrodes is selected sequentially through a gating switch; safe alternating currents are injected into a thoracic cavity, voltage signals on the other electrodes are collected synchronously; a distribution image of sensitive areas of electrical impedances inside the thoracic cavity during a respiration process is obtained on a computer through filtration, amplification, analog-digital conversion, demodulation and transmission and finally through an image reconstruction algorithm. Compared with the existing electric resistance imaging system, the PXI-bus-based respiration process three-dimensional electrical impedance imaging system has the advantages of being high in measuring accuracy, rapid in speed and high in reliability, having no damage to human bodies, achieving continuous real-time bedside monitoring and continuously monitoring respiration variations of human lungs clinically in real time.

What is disclosed is a system and method for monitoring respiration of a subject or subject of interest using a thermal imaging system with single or multiple spectral bands set to a temperature range of a facial region of that person. Temperatures of extremities of the head and face are used to locate facial features in the captured thermal images, i.e., nose and mouth, which are associated with respiration. The RGB signals obtained from the camera are plotted to obtain a respiration pattern. From the respiration pattern, a rate of respiration is obtained. The system includes display and communication interfaces wherein alerts can be activated if the respiration rate falls outside a level of acceptability. The teachings hereof find their uses in an array of devices such as, for example, devices which monitor the respiration of an infant to signal the onset of a respiratory problem or failure.

A device for monitoring respiration comprises a duct, a flow restricting element in the duct, and a pressure sensor arranged in the duct. The pressure sensor measures a pressure drop across the flow restricting element as a pressure difference between a pressure at a location in the duct on a first side of the flow restricting element and a substantially constant pressure on a second side of the flow restricting element opposite the first side.