초록 ▼

A fluidically-operated respirator comprises an apneic event circuit (10) and a demand gas circuit (20). The apneic event circuit (10) comprises a variable capacitance device (132) and an exhaust means (130) which rapidly discharge fluid from the circuit (10) when an inspiration occurs. If an apneic

A fluidically-operated respirator comprises an apneic event circuit (10) and a demand gas circuit (20). The apneic event circuit (10) comprises a variable capacitance device (132) and an exhaust means (130) which rapidly discharge fluid from the circuit (10) when an inspiration occurs. If an apneic event occurs, the circuit (10) activates one or more signals (136) as a predetermined volume of fluid is built up in the circuit (10). The demand gas circuit (20) of the respirator supplies respirating gas to a patient at the beginning of an inspiration and for a time period which is a fraction of the duration of the inspiration.

대표청구항 ▼

A respirator apparatus comprising: means for sensing pressure flow in a respiratory system; first generating means fluidically connected to said sensing means for generating a first fluid signal, said generating means further comprising at least a first output port and a second output port, said gen

A respirator apparatus comprising: means for sensing pressure flow in a respiratory system; first generating means fluidically connected to said sensing means for generating a first fluid signal, said generating means further comprising at least a first output port and a second output port, said generating means being adapted to discharge said first fluid signal either out said first output port or said second output port; an apneic event fluid circuit, said circuit comprising: a variable capacitance device fluidically connected to said first output of said first generating means, said variable capacitance device having a pre-determined maximum capacity for storing a volume of fluid substantially equal to a volume of fluid created by the continuous generation and application of said first fluid signal for a predetermined time; exhaust means fluidically connected to said variable capacitance device, said exhaust means being adapted to close when said first generating means is generating said first fluid signal at said first output port and to open when said first generating means is not generating said first fluid signal at said first output port; and, indicator means responsive to the pressure in said variable capacitance device, said indicator means being adapted for activation when the pressure created in said variable capacitance device by the continuous application of said first fluid signal for a time greater than the pre-determined time period exceeds the maximum capacity of the variable capacitance device; and, a demand gas controller circuit, said circuit comprising: source means fluidically connected to said second output port of said first generating means and responsive to said first fluid signal for providing respirating gas to said patient for a time period corresponding to the duration of said first fluid signal; and, fluid conveying means for conveying said respirating gas from said source means to said patient.