Radio frequency ablation apparatus with remotely articulating and self-locking electrode wand

A medical catheter comprising:

• a wand having a distal end and a proximal end;
• a handle connected to said proximal end of said wand and having a chamber within said handle;
• a wheel mounted within said chamber in said handle, said wheel having a driving portion thereon, and said handle having a window opening into said chamber through said handle, said wheel being partially exposed through said window;
• and
• a stylet, said stylet having
• a shaft connected to said driving portion;
• and
• a wire coupling said shaft and said distal end of said wand.

A radio frequency ablation apparatus comprising:

• a radio frequency power source;
• a wand having a distal end and a proximal end;
• an electrode adjacent said distal end of said wand;
• a handle connected to said proximal end of said wand, and having a chamber in said handle;
• an electrical conductor electrically connecting said radio frequency power source to said electrode;
• a wheel mounted in said handle, said wheel having a driving portion thereon, said wheel being contained within said chamber in said handle, and
• a window opening into said chamber through said handle, said wheel being partially exposed through said window;
• and
• a stylet, said stylet having
• a shaft connected to said driving portion;
• and
• a wire coupling said shaft and said distal end of said wand.