A mud pulse telemetry system comprises a surface located fluid supply line having a drilling fluid flowing therein. In some embodiments, a pro-healing agent is encapsulated, suspended, disposed within or loaded into a biodegradable carrier for sustained-release delivery to a denuded or damaged endothelium treatment area in a blood vessel. The at least one feature may be associated with at least one of the positional control parameters. If it is determined that the terminal device G accepts handover of the master station capability, the terminal device G starts to act as the master station. After brake engagement, the shutoff valve is switched to shut-off position decoupling the actuator from the supply line; the supply valve is switched to flow-enabled position placing the supply line in communication with the pressure sink.