Abstract: A key includes a key body made of sapphire and a supporting body made of a silicone elastomer. The key body is bonded through a physical vapour deposition layer to the supporting body.

Abstract: A connector (20) to a couple breathing conduit to a patient interface or another conduit. The connector allows for an electrical connection (22a, 22b) in a first conduit (14a) to be connected to another electrical connection (21a, 21b) in a patient interface or second conduit (14b). The connector is capable of swivelling without disrupting the gas flow through the conduits of the electrical connection.

Abstract: A method of continuously forming heated conduit (17) includes performing a tape (31) for winding onto a spiral pipeline former. At least one conductor (4,5) is positioned adjacent to the centreline of and parallel with a thin polymer ribbon. The ribbon is folded in half to encapsulate the conductors. The folded ribbon is thermally welded to itself. The folded, welded, ribbon is passed through a creaser, which forms a crease midway across the folded ribbon. The creased pre-formed ribbon is formed into a conduit in a continuous process on a spiral pipeline former (24).