Patent ID: 6851426
Filing Date: 2005-02-08
Classification: A61M

Abstract:
1. An arrangement in ventilatory treatment of the lungs of a living creature under anaesthesia, comprising valve equipment devised for carrying an insufflation gas from a unit for pulmonary ventilation into the lungs and airways of the living creature and permitting expiration of the gas held in the airways, a connection part adapted to contact the living creature to direct the insufflation gas into the lungs and airways of the living creature, gas measurement equipment adherent to a sensor unit for sensing a gas velocity-related pressure gradient in measurement of the velocity of the insufflation gas and the duration of the insufflation phase, a sensor unit for sensing the gas velocity-related pressure gradient in measurement of the velocity of expired gas and the duration of the expiratory phase, a sensor unit devised for measuring the pressure of the gas and/or variations in pressure over time and a sensor unit devised to divert a part of the gas for measurement of the presence of and/or percentage of one or more gas components in the gas, wherein said valve equipment and a combination of said sensor units are arrayed closely together and integrated into a single unit connected to an end section of a hose including a wall and a plurality of internally extending lumens, said sensor units are located closer to the connection part than said valve equipment, said end section of said hose is spaced from the unit for pulmonary ventilation, has a hose-like shape and includes openings for the plurality of lumens that comprise a first lumen opening having a first cross-section and being connected to the unit for receiving the insufflation gas and pulmonary ventilation, and additional lumen openings having cross-sections that are smaller than said first cross-section, said additional lumen openings each being integrated with said first lumen opening in said end section for gas measurement and valve control, said additional lumens include lumens devised for measuring pressure gradient, a lumen for measuring pressure, a lumen for gas sampling and a lumen for counter-pressure acting on the valve equipment.