System with an inflatable member for being arranged in the patient's respiratory tract

A system with at least one inflatable member configured for being arranged in a part of the patient's respiratory tract, the system comprising:

• a catheter carrying the at least one inflatable member, said catheter comprising a fluid line for filling the inflatable member with a fluid;
• a pressure monitoring and control member to be arranged outside the patient's body, said pressure monitoring and control member being in fluid communication with the inflatable member and being configured to receive, during operation, fluid from the inflatable member when a pressure increases above a predetermined threshold pressure and to return said received fluid when the pressure decreases below said predetermined threshold pressure;
• and
• an ultrasonic imaging device, configured to be arranged in or on the patient's body;
• wherein said fluid is an imaging liquid;
• wherein the pressure monitoring and control member is an elastically expandable balloon made from a material configured to expand elastically when a pressure in the balloon increases above a predetermined threshold pressure and to contract when the pressure in the balloon decreases below said predetermined threshold pressure;
• wherein the volume of the elastically expandable balloon, in a non-expanded state, is at least 10 percent of the volume of the inflatable member.

A system with at least one inflatable member configured for being arranged in a part of the patient's respiratory tract, the system comprising:

• a catheter carrying the at least one inflatable member, said catheter comprising a fluid line for filling the inflatable member with a fluid;
• a pressure monitoring and control member to be arranged outside the patient's body, said pressure monitoring and control member being in fluid communication with the inflatable member and being configured to receive, during operation, fluid from the inflatable member when a pressure increases above a predetermined threshold pressure and to return said received fluid when the pressure decreases below said predetermined threshold pressure;
• wherein the pressure monitoring and control member is an elastically expandable balloon made from a material configured to expand elastically when a pressure in the balloon increases above a predetermined threshold pressure and to contract when the pressure in the balloon decreases below said predetermined threshold pressure;
• wherein the volume of the elastically expandable balloon, in the non-expanded state, is between 2 and 10 ml;
• wherein the inflatable member, in a non-expanded state, has a volume between 20 ml and 60 ml.