Abstract: A microminiature electro-magnetic coil sensor pull ring with a pull wire attached thereto is used in changing the angle of a distal end of a medical catheter. The tubular pull ring has a connection recess with a flat bottom machined into the full wall thickness and located proximal to a coil wrap area. Circuit wires are electrically connected to the two lead ends of the coil within the connection recess, such that neither the circuit wires nor the lead ends stand proud of the full wall thickness. The coil wrap area is also recessed, and can have side walls defining an offset angle for the turns of the coil. In another aspect, a coil is wound around one of the pull wires for the pull ring.

Abstract: An interconnect ring is used in attaching the leadwires to the coil wire ends of a microminiature sensor. The interconnect ring is affixed directly to an outside surface of either the core or the coil wire of the microminiature sensor. At least the two flexible ends of the coil wire are electrically joined to metal pads on the interconnect ring. Thereafter, the microminiature sensor can be handled with minimal risk of breakage, shorting or dislodging of the ends of the coil wire. Two other metal pads on the interconnect ring are left open for subsequent attachment of leadwires which can run the length of the catheter device in which the microminiature sensor is used.

Abstract: An interconnect ring is used in attaching the leadwires to the coil wire ends of a microminiature sensor. The interconnect ring is affixed directly to an outside surface of either the core or the coil wire of the microminiature sensor. At least the two flexible ends of the coil wire are electrically joined to metal pads on the interconnect ring. Thereafter, the microminiature sensor can be handled with minimal risk of breakage, shorting or dislodging of the ends of the coil wire. Two other metal pads on the interconnect ring are left open for subsequent attachment of leadwires which can run the length of the catheter device in which the microminiature sensor is used.