Catheter Systems and Methods of Use

A kit comprising:

• a first catheter including an elongated body portion and a distal end portion, the distal end portion including a pre-formed bend that extends at a non-zero angle relative to a longitudinal axis of a first body lumen, the first catheter having a non-circular outer contour;
• and
• a fitting including
• a first portion configured to selectively couple to a second catheter;
• and
• a second portion defining a first opening configured to receive the first catheter such that a rotational orientation of the first catheter is fixed relative to a rotational orientation of the second catheter, the first opening having a non-circular shape that corresponds to the non-circular outer contour of the first catheter.

A method of using a catheter system, comprising:

• inserting a first distal end portion of an outer catheter into a first body lumen;
• coupling a first key joint component on an inner catheter with a second key joint component on a proximal end portion of the outer catheter to fix a rotational orientation of the inner catheter relative to a rotational orientation of the outer catheter about a longitudinal axis of the first body lumen, wherein the second key joint component runs along a partial length of the outer catheter, and wherein a distal end portion of the inner catheter includes a pre-formed bend that extends at a non-zero angle relative to the longitudinal axis of the first body lumen;
• and
• advancing the distal end portion of the inner catheter through a lumen of the outer catheter, away from the distal end portion of the outer catheter, and into a second body lumen, the second body lumen branching from the first body lumen.

A method of using a catheter system, comprising:

• advancing a distal end portion of a catheter into a body lumen, the distal end portion having an antenna;
• emitting a signal from the antenna;
• and
• locating the signal using a detector outside the body to verify the location of the distal end portion of the catheter within the body lumen.