31 results about "Breathing Effort" patented technology

In certain example embodiments, an air delivery system includes a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment and a pulse oximeter. In certain example embodiments, the pulse oximeter is configured to determine, for example, a measure of patient effort during a treatment period and provide a patient effort signal for input to control operation of the flow generator. Oximeter plethysmogram data may be used, for example, to determine estimated breath phase; sleep structure information; autonomic improvement in response to therapy; information relating to relative breathing effort, breathing frequency, and/or breathing phase; vasoconstrictive response, etc. Such data may be useful in diagnostic systems.

A diaphragm pacing stimulatory method and a system to implement the method are provided to improve respiratory function and the quality of sleep in patients whose sleep is compromised by poor respiration. The diaphragm pacing method includes adaptations that make it particularly compatible with the onset of sleep and sustaining sleep. Embodiments of the method are operated independently of breathing effort the patient may make during sleep. Patients for whom the invention is appropriate include those with a neuromuscular disease, such as amyotrophic lateral sclerosis (ALS). System elements include an external electrical stimulator coupled to one or more implanted electrodes that stimulate diaphragm contraction. The system and method provide for a pacing of the diaphragm, improved breathing, and improved sleep. Features of improved sleep include longer sleep time, an increased amount of REM sleep, and fewer episodes of wakefulness and restlessness.

An ambulatory assist ventilation (AA V) apparatus and system are disclosed for the delivery of a respiratory gas to assist the spontaneous breathing effort of a patient with a breathing disorder. The AA V system includes a compressed respiratory gas source, a respiratory assist device for controlling respiratory gas flow to the patient, a patient circuit tubing and a low profile nasal interface device, which does not have a dead space or hollow area where C02 can collect, for delivering the respiratory gas to the patient, wherein the nasal interface device is fluidly connected to the respiratory assist device via tubing for receiving the respiratory gas therefrom.

The present invention provides a method and apparatus for determining the occurrence of apnoeas or hypopneas from ECG signal data alone. The method is carried out by apparatus configured to acquire ECG signals from a sleeping subject, transform the signals to data, and extract ECG features relevant to estimate breathing effort for the determination of respiratory events characteristic of apnoeas and hypopneas. The extracted ECG features are correlates of breathing efforts and are used as surrogate measures of breathing or respiratory events. The method may include calculating an AHI or apnoea/hypopnea index. The method may classify apnoeas into obstructive or central apnoeas.

A respiration implant system includes a parasternal respiration sensor is configured for intramuscular placement into parasternal muscle of the implanted patient to develop a respiration signal representing respiration activity of the implanted patient. A movement sensor develops a patient movement signal representing movement of the implanted patient. A pacing processor receives the respiration signal from the respiration sensor and the movement signal from the movement sensor to generate a respiration pacing signal synchronized with the respiration activity of the implanted patient. A stimulating electrode delivers the respiration pacing signal from the pacing processor to respiration neural tissue of the implanted patient to promote the breathing effort of the implanted patient.

A neonatal feeding tube (10) includes electronics and instrumentation for monitoring a neonate and for provides nourishment to the neonate. The tube (10) includes electrodes (20) for sensing ECG signals of the neonate. Thermistors (22, 24, 28, 30) are placed at various points along the tube (10) to measure the neonate's temperature at those points. Breathing effort is measured by calculating a pressure differential at two pressure ports (32, 34). Pulse and SpO2 are measured at a fiber optic window (35). The electrodes (20), a distal electrode (64) and a light source (66) aid in helping a caregiver position the tip (12) of the tube (10) correctly in the stomach of the neonate.

A respiration system for noninvasive respiration includes a respiration drive, which is controlled by a control device, and includes a patient module (4) with electrodes for picking up electrode signals from the surface of the chest of a patient. The control device is set up to suppress ECG signals in the electrode signals in order to obtain electromyographic signals (EMG signals) representing the breathing effort and to control the respiration drive as a function of the EMG signals. Provisions are made for deriving ECG signals from the electrode signals before said ECG signals are suppressed and for making data representative of the ECG available for display.

An ambulatory assist ventilation (AAV) apparatus and system are disclosed for the delivery of a respiratory gas to assist the spontaneous breathing effort of a patient with a breathing disorder. The AAV system includes a compressed respiratory gas source, a respiratory assist device for controlling respiratory gas flow to the patient, a patient circuit tubing and a low profile nasal interface device, which does not have a dead space or hollow area where CO2 can collect, for delivering the respiratory gas to the patient, wherein the nasal interface device is fluidly connected to the respiratory assist device via tubing for receiving the respiratory gas therefrom. In some cases, the nasal interface device may be used in combination with other gas sources, such as oxygen concentrators, to provide dual therapy capability suitable for some applications.

A ventilatory assist system and method are disclosed. The system comprises a tube for connection to a patient's airway, inspiratory and expiratory tube lumens connected to the tube, an inspiratory air source connected to the inspiration tube lumen, and a controller of air pressure in the expiratory tube lumen. The pressure controller is responsive to a physiological breathing signal representative of patient's inspiratory effort to allow air flow through the expiratory tube lumen during a patient's expiration phase, partially restricting the air flow through the expiratory tube lumen to a minimum air flow during a patient's inspiration phase. During both respiratory phases, a unidirectional air flow is produced through the inspiratory and expiratory tube lumens to prevent air expired by the patient from being breathed again. The physiological breathing signal allows synchronization of the ventilatory assist with breathing efforts of the patient.

The present disclosure relates to a breathing apparatus (1) configured to provide bioelectrically controlled ventilation to a patient (3) by ventilating the patient in a ventilation mode in which patient-triggered breaths are delivered to the patient upon detection of bioelectrical trigger events indicative of spontaneous breathing efforts by the patient. The breathing apparatus is configured to monitor a level of ventilation of the patient, and to deliver a non-patient triggered breath to the patient when the level of ventilation falls below a minimum ventilation threshold value.

The invention relates to a breathing effort identification device. The breathing effort device includes a nasal alar motion sensor for acquiring a nasal alar motion signal, a nasal alar motion sensorfor acquiring a nasal alar motion signal and a nasal alar motion sensor for acquiring a nasal alar motion signal. A processor is configured to be coupled to the alar motion sensor, to receive the alarmotion signal of the alar motion sensor and to analyze the alar motion signal to determine whether a breathing effort has occurred. The present invention also relates to a sleep apnea monitoring device using the breathing effort identification device and a method of using the same.

Respiratory variables are estimated on a per-breath basis from airway pressure and flow data acquired by airway pressure and flow sensors (20, 22). A breath detector (28) detects a breath interval. Aper-breath respiratory variables estimator (30) fits the airway pressure and flow data over the detected breath interval to an equation of motion of the lungs relating airway pressure, airway flow, and a single-breath parameterized respiratory muscle pressure profile (40, 42) to generate optimized parameter values for the single-breath parameterized respiratory muscle pressure profile. Respiratorymuscle pressure is estimated as a function of time over the detected breath interval as the single-breath parameterized respiratory muscle pressure profile with the optimized parameter values, and may for example be displayed as a trend line on a display device (26, 36) or integrated (32) to generate Work of Breathing (WoB) for use in adjusting settings of a ventilator (10).

The invention relates to portable energy-saving environmentally-friendly breathing apparatus equipment. According to the portable energy-saving environmentally-friendly breathing apparatus equipment disclosed by the invention, after the air pressure of oxygen pressurized by an oxygen cylinder enters a breathing apparatus, the air pressure is utilized to provide respiratory pressure, in the respiration process, circumscribing equipment for providing respiration power is not needed, and providing power sufficient for controlling a valve is only needed, so that the energy can be saved, and the portable energy-saving environmentally-friendly breathing apparatus equipment is suitable for being used in a position where electric power is difficult of access; in the using process, oxygen can be collected for recycling, so that the waste of the oxygen cannot generate; the portable energy-saving environmentally-friendly breathing apparatus equipment is energy-saving and environmentally-friendly, compact in integral structure and space-saving, and is specially suitable for being mounted on a transportable vehicle, and the size of the portable energy-saving environmentally-friendly breathing apparatus equipment is only limited by the size of the oxygen cylinder; under the situation of cooperating with a small-volume oxygen cylinder, the portable energy-saving environmentally-friendly breathing apparatus equipment is very suitable for portable usage; in-situ prepared oxygen is not utilized, and the purity of the oxygen is guaranteed and conforms to the national standard and medical requirements; and a respiration interface which can communicate with atmosphere is provided, atmosphere communication is performed after respiration once, and the influence caused by instable respiration volume of the equipment is avoided.

An ambulatory assist ventilation (AAV) apparatus and system are disclosed for the delivery of a respiratory gas to assist the spontaneous breathing effort of a patient with a breathing disorder. The AAV system includes a compressed respiratory gas source, a respiratory assist device for controlling respiratory gas flow to the patient, a patient circuit tubing and a low profile nasal interface device, which does not have a dead space or hollow area where C02 can collect, for delivering the respiratory gas to the patient, wherein the nasal interface device is fluidly connected to the respiratory assist device via tubing for receiving the respiratory gas therefrom. In some cases, the nasal interface device may be used in combination with other gas sources, such as oxygen concentrators, to provide dual therapy capability suitable for some applications.