A conduit for the measurement pressure in the urinary tract of a patient includes having a proximal end and distal end a catheter body. Multiple chambers are formed in catheter body, an adapter is connected to the proximal end of catheter body. Adapter includes the Single port for each chamber. First pressure sensor generally includes a balloon, is the measurement pressure for being fluidically coupled to the first chamber and being configured and positioned in the urethra of patient. Second pressure sensor, equally generally includes a balloon, is to be fluidically coupled to the second chamber and be extremely configured and positioned in the measurement pressure in the capsule of patient in catheter body. One expansible holding part, it may be connected to third chamber, between first and second expansible pressure sensor be located at catheter body on, so as to catheter body can in the urinary tract one selected by place be retained to be properly positioned fluid pressure sensor in capsule and urethra respectively.
