Catheter with adjustable working length catheter shaft

A catheter handle assembly, comprising:

• a catheter handle comprising a distal end and a proximal end that are spaced along a first dimension;
• a shuttle connectable with a catheter shaft, wherein the shuttle is movable along the first dimension relative to at least the distal end of the catheter handle;
• and
• a lock interconnected with the shuttle and disposed on an exterior of the catheter handle, wherein the lock is configured to be separately disposable in a locked configuration and an unlocked configuration, wherein the shuttle is movable relative to the catheter handle when the lock is in the unlocked configuration, and wherein a position of the shuttle is fixed relative to the catheter handle when the lock is in the locked configuration.

A catheter, comprising:

• a catheter shaft;
• a catheter shaft actuator movably mounted on the catheter shaft;
• a housing disposed in a fixed position relative to the catheter shaft, wherein at least part of the housing extends proximally relative to the catheter shaft actuator;
• and
• a generator cable extending proximally from the housing, wherein a distal end section of the housing is typically disposed within a proximal end section of the catheter shaft actuator when the catheter shaft actuator is disposed in a proximal-most position relative to the catheter shaft.