Catheter with flat beam deflection in tip

A catheter, comprising:

• an elongated catheter body comprising a first tubular structure having a first central lumen, a distal end and a proximal end;
• a deflectable section having a second tubular structure having a second central lumen, a distal end, and a proximal end that is distal of the proximal end of the catheter body;
• a flat beam having first and second opposing surfaces, a distal end and a proximal end;
• the flat beam extending through at least the second central lumen of the deflectable section, the flat beam defining a first sub-lumen and a second sub-lumen;
• a puller wire configured with first and second puller wire segments and a U-bend puller wire segment therebetween, the U-bend puller wire segment being anchored to the distal end of the flat beam, the first puller wire segment extending through the first sub-lumen and through the first central lumen of the catheter body, the second puller wire segment extending through the second sub-lumen and through the first central lumen of the catheter body;
• a first compression coil surrounding a portion of the first puller wire segment extending through the catheter body, a second compression coil surrounding a portion of the second puller wire segment extending through the catheter body;
• a pair of first and second half-cylindrical brackets, the first half-cylindrical bracket comprising a first inwardly-extending flange mounted on the first opposing surface of the beam, the second half-cylindrical bracket comprising a second inwardly-extending flange mounted on the second opposing surface of the beam, the first and second half-cylindrical brackets forming a hollow body generally surrounding the beam at or near a junction between the catheter body and the deflectable section, wherein the distal end of the first tubular structure covers a proximal portion of the hollow body and the proximal end of the second tubular structure covers a distal portion of the hollow body, and wherein the first and second inwardly-extending flanges extend into a lumen generally defined by the pair of first and second half-cylindrical brackets.