A ventilation system that includes a pressure source, a pneumatic path configured to receive gas from the pressure source and comprising a first pneumatic component coupled to a second pneumatic component. The first pneumatic component includes a first electrical conductor including a first electrical component having a first electrical characteristic. The second pneumatic component comprises a second electrical conductor including a second electrical component having a second electrical characteristic. The first electrical conductor is electrically connected with the second electrical conductor in an electric path. The system performs operations including determining a continuity of the electrical path; displaying a notification regarding the continuity of the electrical path; detecting the unique electrical characteristic of the electric path; and determining a pneumatic characteristic of the pneumatic path.

Oxygen concentrator apparatus provides variation in therapy gas during a breathing cycle such as by varying flow rate and/or oxygen purity of enriched air. The apparatus may include a compressor and a valve set that operates sieve bed(s) for the enriching air and to vent exhaust gas from the bed(s). The therapy gas may include released enriched air and exhaust gas. The apparatus has a supply valve to selectively release enriched air from an accumulator via a primary path to a delivery conduit. The apparatus may include a secondary path, such as with a valve, to release a portion of exhaust gas to the delivery conduit. A controller actuates the valve set to produce the enriched air, and the supply valve to release enriched air to the delivery conduit. The controller may actuate the secondary valve in anti-sync with the supply valve to release exhaust gas to the delivery conduit.

The present invention relates to a humidifier (10) for a system for providing a flow of breathable gas to an airway of a patient, wherein the humidifier (10) comprises: a casing (12) configured to contain a liquid reservoir (20); an air inlet (14) which is arranged at the casing (12); an air outlet (16) which is arranged at the casing (12); and a flow passage (18) connecting the air inlet (14) with the air outlet (16), wherein the flow passage (18) is in fluidic communication with the liquid reservoir (20), and wherein the humidifier (10) comprises a heat pipe (24) having a hot end (26) and a cold end (28), wherein the hot end (26) of the heat pipe (24) is arranged outside the casing (12) and the cold end (28) of the heat pipe (24) is arranged in the liquid reservoir (20).

This disclosure describes improved systems and methods for displaying respiratory data to a clinician in a ventilatory system. Respiratory data may be displayed by any number of suitable means, for example, via appropriate graphs, diagrams, charts, waveforms, and other graphic displays. The disclosure describes novel systems and methods for determining and displaying ineffective patient inspiratory or expiratory efforts or missed breaths in a manner easily deciphered by a clinician.

A respiratory system, primarily to provide a mechanical insufflation/exsufflation therapy, may include a first pressure generating source, a second pressure generating source and a primary valve to switch between insufflation/positive pressure flow and exsufflation/negative pressure flow, and to generate oscillations alongside either of these cycles. The respiratory system can optionally employ a secondary valve either on a fluidic path of the first pressure generating source or on a fluidic path of the second pressure generating source. An interfacing assembly acts as a fluidic conduit between the pressure generating sources and the patient. A control unit is configured to generate required pressurized flow and oscillations as per the user settings. The aforesaid valves can be manipulated into multiple orientations/positions, which are aligned and/or adjusted with respect to the respective pressure generating sources as per the therapy requirements.

A portable oxygen concentrator retrofit system and method in which an existing portable oxygen concentrator may be retrofitted to output an enriched oxygen gas at a flow rate suitable for use in a patient ventilation system without the need for an external source of compressed gas.

A ventilator system for a patient includes: an intubation tube configured to flow oxygen-enriched humidified air (OHA) toward patient lungs and to evacuate exhaust air exhaled from the lungs, the intubation tube includes: a distal end, configured to be inserted into patient trachea, and a proximal end, configured to be connected to tubes for receiving the OHA and evacuating the exhaust air; a first microgravity sensor, coupled to the intubation tube at a first position, and configured to produce a first signal indicative of a first micro-acceleration of the intubation tube at the first position; a second microgravity sensor, coupled to the intubation tube at a second different position, and configured to produce a second signal indicative of a second micro-acceleration of the intubation tube at the second position; and a processor, configured to control the ventilation system to apply a ventilation scheme responsively to the first and second signals.

Methods and apparatus may implement controlled generation of oxygen enriched air in an oxygen concentrator while implementing control that reduces pneumatic imbalance between the concentrator's canisters, such as dynamic pressure imbalance or other pneumatic characteristic. One or more controllers may regulate operation of a compressor that feeds a pressurised air stream to the concentrator's canisters. This may regulate speed of the compressor to a speed set point for generating the pressurised stream. The regulating may involve generating a compressor control signal having a characteristic parameter such as a power parameter. The controller(s) may operate valve(s) in a cyclic pattern so as to produce oxygen enriched air in an accumulator. A cycle of the cyclic pattern may include a plurality of phases, where each of the plurality of phases has a duration. The controller(s) may then generate a dynamic adjustment to the duration(s) based on an evaluation of the characteristic parameter.

Systems and methods for fluid delivery into a ventilation system are disclosed. In an example, the technology relates to a fluid delivery system for delivery of aerosolized liquid. The fluid delivery system includes an injection tip having a set of orifices configured to aerosolize a liquid having certain properties. The injection tip may be couplable with components of a breathing circuit. For example, the injection tip may be couplable with components at or below a wye component (e.g., at a wye component or between the wye component and a patient), such as at the wye component or at an endotracheal tube multi-port connector. Alternatively, the injection tip may be integrated into a breathing circuit, such as at an endotracheal tube connector or at an endotracheal tube.

Described herein are various embodiments of an oxygen concentrator system and method of delivering oxygen enriched gas to a user. In some embodiments, oxygen concentrator system includes one or more components that improve the efficiency of oxygen enriched gas delivery during operation of the oxygen concentrator system.