Devices and methods for securing a catheter within a heart. The drilling system includes a tubing that passes through a sea bottom wellhead and carries a drill bit. The heat exchange balloon is placed in the vasculature of a patient, and heat exchange fluid at a temperature other than the temperature of the blood in the vasculature is circulated through the interior of the balloon to add or remove heat from the blood of the patient. The inlet valve is driven with rotation of the crankshaft, while the drive for the combustion control valve is independent of angular position of the crankshaft and has its own controller for timing its opening and closing to provide controlled homogeneous combustion. If the extracted features falls outside the corresponding match region, then a defect is reported.