dispositivo de pressão positiva e contínua das vias aéreas nasais para uso em um sistema de cpap para auxiliar a respiração do paciente, sistema de pressão positiva e contínua das vias aéreas nasais para auxiliar a respiração do paciente, e método para estabelecer e proporcionar uma pressão positiva e contínua das vias aéreas a um paciente

摘要

An nCPAP device for assisting patient breathing includes a generator body forming an inlet, a chamber, and first and second flow circuits. The chamber directs pressurized gas from the inlet to the flow circuits. The flow circuits each include a nozzle, a channel, and at least one port. The nozzle emits a jet stream into the channel in a direction of a patient side thereof. The port fluidly connects the channel to ambient, and promotes entrainment of ambient air with the jet stream. In some embodiments, the channel forms a ramp feature directing exhaled air toward the jet stream in an angular fashion. The generator body requires reduced driving pressures to achieve target CPAP levels and reduces total imposed WOB as compared to conventional designs.