초록 ▼

A compact respirator, which is independent from a central air supply includes at least two gas supply lines, which lead to a gas mixer in the inspiration line. The gas lines are part of a mixing and metering unit, wherein one gas supply line has a compressor for ambient air and the at least one addi

A compact respirator, which is independent from a central air supply includes at least two gas supply lines, which lead to a gas mixer in the inspiration line. The gas lines are part of a mixing and metering unit, wherein one gas supply line has a compressor for ambient air and the at least one additional gas supply line has a metering unit for an auxiliary gas. Upstream of the gas mixer, there is a gas volume flow meter each in each of the gas supply lines. A pressure sensor is arranged in the inspiration line downstream of the gas mixer. The expiration line contains a discharge valve with a pressure sensor arranged upstream of the discharge valve. A central control unit is connected to the compressor, the metering unit, of which there is at least one, to the discharge valve, as well as to the pressure sensors. The gas volume flow meters, and control unit are provided for controlling the breathing pressure and the mixed gas composition after comparison of the signals measured by the pressure sensors as well as by means of the gas volume flow meters with predetermined set points.

대표청구항 ▼

[ What is claimed is:] [1.] A respirator with an inspiration line and an expiration line, which lead to a patient via a connection piece, the respirator comprising:a gas mixer;a mixing and/metering unit with two gas supply lines, which lead to said gas mixer in the inspiration line;a compressor for

[ What is claimed is:] [1.] A respirator with an inspiration line and an expiration line, which lead to a patient via a connection piece, the respirator comprising:a gas mixer;a mixing and/metering unit with two gas supply lines, which lead to said gas mixer in the inspiration line;a compressor for drawing in and compressing ambient air, said compressor being provided connected to one of said gas supply lines;a metering unit for metering at least one auxiliary gas fed in, which is under a pressure that is substantially higher than the ambient pressure, the metering unit being connected to another of said gas supply lines;a first gas volume flow meter located in said one of said gas supply lines arranged upstream of said gas mixer;a second gas volume flow meter located in said another of said gas supply lines arranged upstream of said gas mixer;a first pressure sensor connected to said inspiration line arranged downstream of said gas mixer;a discharge valve in the expiration line;a second pressure sensor connected to said expiration line, arranged upstream of said discharge valve; anda central control unit connected to said compressor, said metering unit, said discharge valve, as well as to said pressure sensors and to said gas volume flow meters, said central control unit including control means for controlling the breathing pressure and the mixed gas composition after comparison of the signals measured, by means of said pressure sensors as well as said gas volume flow meters, with predetermined set points.