초록 ▼

A ventilator has an inspiration section for supplying respiratory gas to a respiratory system of a patient and an expiration section for conveying respiratory gas from the respiratory system is described. If the patient spontaneously inhales during a controlled inspiration phase, the inspiration sec

A ventilator has an inspiration section for supplying respiratory gas to a respiratory system of a patient and an expiration section for conveying respiratory gas from the respiratory system is described. If the patient spontaneously inhales during a controlled inspiration phase, the inspiration section and expiration section will be controlled to allow a spontaneous exhalation during a specific period of time within the inspiration phase. The patient thus will be able to respirate in a natural way even during controlled respiration, resulting in increased comfort and increased motivation for increasing the spontaneous respiration rate. If an insufficient tidal volume or minute volume is supplied during the controlled and spontaneous part of the inspiration phase, the inspiration phase will commence immediately after the spontaneous exhalation for supplying a remaining part of the set tidal volume.

대표청구항 ▼

[ I claim as my invention:] [1.] A ventilator comprising:a breathing tube connectable to a patient;an inspiration section for supplying a respiratory gas at an inhalation pressure to said breathing tube during an inspiration phase;an expiration section for conveying a respiratory gas from said breat

[ I claim as my invention:] [1.] A ventilator comprising:a breathing tube connectable to a patient;an inspiration section for supplying a respiratory gas at an inhalation pressure to said breathing tube during an inspiration phase;an expiration section for conveying a respiratory gas from said breathing tube during an expiration phase;detector means for detecting spontaneous inhalation by a patient; andcontrol means for controlling said inspiration section and said expiration section and connected to said detector means for, if said detector means detects spontaneous inhalation during an inspiration phase controlled by said inspiration section, controlling said inspiration section immediately after said spontaneous inhalation to interrupt supply of respiratory gas to said breathing tube for a period of time during said inspiration phase to produce a pressure in said breathing tube which is less than said inhalation pressure and for controlling said expiration section to convey respiratory gas from said breathing tube for said period of time, for allowing a patient connected to said breathing tube to spontaneously exhale against said pressure which is less than said inhalation pressure for said period of time during said inspiration phase.