Medical devices, namely, monitors, catheters, isolation catheters, suction catheters, aspiration catheters, drug-delivery catheters, visualization catheters, balloon catheters, sealing catheters, valves, restrictors, occluders, transducers, and sheaths for monitoring, treatment, imaging, assessing function of, or compiling data regarding, the lungs and tracheal and bronchial tree and for airway management, endotracheal tubes, bronchoscopes, tracheal catheters, bronchial catheters, tracheal and bronchial prostheses, pulmonary stents and implantable devices, namely, endobronchial prostheses for implantation; medical devices, apparatus and instruments, namely, a system comprising a catheter and a computerized console, comprising flow and pressure sensors, electronic valves, a computer, customized and non-customized software, and a touch screen LCD monitor, for measuring pulmonary flows and pressures and calculating airway resistance, for diagnosis, assessment, monitoring, and treatment in the field of interventional pulmonology, and electronic and electromechanical diagnosing, monitoring, assessment and treatment apparatus, namely, consoles, collateral ventilation measurement consoles, collateral ventilation assessment consoles, airway resistance measurement consoles, medical equipment assessment systems, namely, computerized systems and equipment comprised of computer hardware and computer software for assessing pulmonary conditions, catheters and computer monitors, medical equipment measurement systems, namely, computerized systems and equipment comprised of computer hardware and computer software for measuring collateral ventilation and airway resistance, catheters and computer monitors, and medical equipment diagnostic systems, namely, computerized systems and equipment comprised of computer hardware and computer software for diagnosing pulmonary diseases and disorders, catheters and computer monitors, all for use in the field of pulmonology and/or respiratory challenges