초록 ▼

A breathing gas system, primarily intended for use during anaesthetization of patients, has a respiratory circuit, a drive gas apparatus and a pressure-transmitting bellows device, connected by a first space to the respiratory circuit and by a second space to the drive gas apparatus. When an outlet

A breathing gas system, primarily intended for use during anaesthetization of patients, has a respiratory circuit, a drive gas apparatus and a pressure-transmitting bellows device, connected by a first space to the respiratory circuit and by a second space to the drive gas apparatus. When an outlet valve is regulated at the end of an expiratory phase to minimize the pressure difference between the first space and the second space, the respiratory circuit responds immediately at the next inspiratory phase when drive gas is sent to the second space. Minimizing the pressure difference also makes possible use of the pressure-regulated operating mode with the breathing gas system, and a rapid response to attempts at spontaneous breathing by the patient is achieved.

대표청구항 ▼

A breathing gas system comprising: a respiratory circuit for carrying a breathing gas to and from a patient, executing a series of inspirations and expirations in successive respiratory cycles; first pressure gauge means for measuring pressure in said respiratory circuit; drive gas means for control

A breathing gas system comprising: a respiratory circuit for carrying a breathing gas to and from a patient, executing a series of inspirations and expirations in successive respiratory cycles; first pressure gauge means for measuring pressure in said respiratory circuit; drive gas means for controlling a flow of breathing gas in said respiratory circuit; pressure-transmitting means including a first space, having a volume, connected to said respiratory circuit, a second space having a volume, connected to said drive gas means, and a movable body separating said first space from said second space so that the volume of said first space increases when the volume of the second space decreases and vice-versa, for transmitting pressure changes between said drive gas means and said respiratory circuit; second pressure gauge means for measuring a pressure in said second space; and control means, connected to said first and second pressure gauge means, for controlling said drive gas means dependent on the respective pressures measured by said first and second pressure gauge means for minimizing a pressure difference between said second space and said respiratory circuit after each expiration by a patient.