Patent application number | Description | Published |
20090241952 | SYSTEMS AND METHODS FOR COMPENSATING FOR PRESSURE DROP IN A BREATHING ASSISTANCE SYSTEM - A breathing assistance system configured to determine pressure drop may include a gas delivery system configured to deliver gas toward a patient, one or more sensors configured to measure one or more parameters of gas delivered by the gas delivery system, a calibration module, and a pressure drop calculation module. The calibration module may be configured to perform one or more pressure drop calibration tests, each pressure drop calibration test measuring a pressure drop in gas flowing through a breathing assistance system apparatus at a particular flow rate; and based at least on the results of the one or more pressure drop calibration tests, generating a non-linear equation relating (a) pressure drop in gas flowing through the breathing assistance system apparatus with (b) flow rate of gas flowing through the breathing assistance system apparatus. The pressure drop calculation module may be configured to determine pressure drops in gas flowing through the breathing assistance system apparatus for various flow rates based at least on the non-linear equation. | 10-01-2009 |
20100242961 | SYSTEMS AND METHODS FOR PREVENTING WATER DAMAGE IN A BREATHING ASSISTANCE SYSTEM - A breathing assistance system includes a gas delivery system including a gas flow generation device configured to generate a gas flow; a humidifier system including a liquid water chamber and an outlet, and a microporous filter. The gas delivery system and the humidifier system at least partially define a gas flow path from the gas flow generation device to the outlet of the humidifier system. The microporous filter is located along the gas flow path such that the gas flow generated by the gas flow generation device flows through the microporous filter, subsequently becomes humidified in the liquid water chamber, and subsequently flows through the outlet of the humidifier system. The microporous filter is gas-permeable and liquid water-impermeable, such that the microporous filter prevents liquid water in the liquid water chamber from flowing into the gas flow generation device in any orientation of the gas delivery system and humidifier system. | 09-30-2010 |
20110011400 | WIRELESS, GAS FLOW-POWERED SENSOR SYSTEM FOR A BREATHING ASSISTANCE SYSTEM - A breathing assistance system for providing breathing assistance to a patient includes a gas delivery system configured to generate a gas flow, a patient interface configured to interface with the patient, a connection system connected between the gas delivery system and the patient interface and configured to communicate the gas flow to the patient interface for delivery to the patient, and a sensor system remote from the gas delivery system and connected to at least one of the patient interface and the connection system. The sensor system may include a sensor for measuring a parameter, one or more actuators, and a power supply based on a turbine configured to be driven by the gas flow and an electrical generator coupled to the turbine and configured to generate electricity. | 01-20-2011 |