Patent ID: 7073503
Filing Date: 2006-07-11
Classification: A61M

Abstract:
1. A respiration catheter tube for insertion into a patient's trachea, said catheter tube including a sealing cuff, said cuff comprising inflation means comprising a source of pressurized gas and a cuff inflation tube, said cuff inflation tube further comprising an opening into the cuff, said opening being placed under a collar of the cuff in the vicinity of a free end of the catheter, a part of the collar covering the opening of the cuff inflation tube into the cuff being thin-walled, said thin-walled part of the collar being responsive to pressure of respiratory gas downstream of said cuff, said thin-walled part of the collar having a first position and a second position, said first position comprising an open position with pressurized gas communicating through said inflation tube to said cuff, said second position comprising a closed position with communication of pressurized gas between said source of pressurized gas and said cuff being interrupted, said thin-walled part of the collar assuming said second position responsive to a pressure in the respiratory gas downstream of said cuff exceeding gas pressure in said inflation tube.