A proximity sensing system for determining proximity to a desired location inside a patient, comprising: an emitter assembly comprising: at least one power supply; and at least one coil operably coupled to said at least one power supply and configured to selectively output electromagnetic energy; wherein said proximity sensing system further comprises a medical device comprising: an elongate member including a distal portion and a proximal portion; and at least one adapter (105,305) integrally or removably connected to and positioned on said distal portion, said at least one adapter comprising at least one inductor configured to inductively couple to said coil and convert electromagnetic energy into an electrical current; characterised in that said proximity sensing system further comprises at least one indicator (107,307,405) disposed integrally or removably upon the adapter (105,305) wherein said at least one indicator is operably coupled to said inductor and comprises a visual indicator configured to convert said electrical current into light having increasing intensity as the adapter (105,305) is moved closer to the coil. an emitter assembly comprising: at least one power supply; and at least one coil operably coupled to said at least one power supply and configured to selectively output electromagnetic energy; wherein said proximity sensing system further comprises a medical device comprising: an elongate member including a distal portion and a proximal portion; and at least one adapter (105,305) integrally or removably connected to and positioned on said distal portion, said at least one adapter comprising at least one inductor configured to inductively couple to said coil and convert electromagnetic energy into an electrical current; characterised in that said proximity sensing system further comprises at least one indicator (107,307,405) disposed integrally or removably upon the adapter (105,305) wherein said at least one indicator is operably coupled to said inductor and comprises a visual indicator configured to convert said electrical current into light having increasing intensity as the adapter (105,305) is moved closer to the coil. at least one power supply; and at least one coil operably coupled to said at least one power supply and configured to selectively output electromagnetic energy; wherein said proximity sensing system further comprises a medical device comprising: an elongate member including a distal portion and a proximal portion; and at least one adapter (105,305) integrally or removably connected to and positioned on said distal portion, said at least one adapter comprising at least one inductor configured to inductively couple to said coil and convert electromagnetic energy into an electrical current; characterised in that said proximity sensing system further comprises at least one indicator (107,307,405) disposed integrally or removably upon the adapter (105,305) wherein said at least one indicator is operably coupled to said inductor and comprises a visual indicator configured to convert said electrical current into light having increasing intensity as the adapter (105,305) is moved closer to the coil. an elongate member including a distal portion and a proximal portion; and at least one adapter (105,305) integrally or removably connected to and positioned on said distal portion, said at least one adapter comprising at least one inductor configured to inductively couple to said coil and convert electromagnetic energy into an electrical current; characterised in that said proximity sensing system further comprises at least one indicator (107,307,405) disposed integrally or removably upon the adapter (105,305) wherein said at least one indicator is operably coupled to said inductor and comprises a visual indicator configured to convert said electrical current into light having increasing intensity as the adapter (105,305) is moved closer to the coil.