Multi-stage balloon catheter systems and methods

A method of dilating a stricture of a body lumen, comprising:

• obtaining a balloon dilation catheter comprising a balloon expandable to four or more predefined discrete diameters at four or more predefined discrete pressures;
• inserting the balloon dilation catheter through a working lumen of an elongate member into the strictured body lumen;
• referencing a label comprising first, second, third, and fourth predefined discrete balloon diameters correlated with first, second, third, and fourth predefined discrete pressures;
• expanding the balloon to the first predefined discrete diameter at the first predefined discrete pressure;
• expanding the balloon to the second predefined discrete diameter at the second predefined discrete pressure;
• expanding the balloon to the third predefined discrete diameter at the third predefined discrete pressure;
• and
• expanding the balloon to the fourth predefined discrete diameter at the fourth predefined discrete pressure.

A system for performing esophageal dilation, comprising:

• an esophageal balloon dilation catheter, comprising
• a catheter body configured to pass through the working lumen of the elongated member and comprising:
• an inflation lumen extending a length of the catheter body comprising an opening at the distal end;
• a support wire disposed within the lumen and extending distally from a distal end of the catheter body;
• a fluid connector coupled to the catheter body adjacent a proximal end and in fluid communication with the inflation lumen;
• a balloon comprising a distal end and a proximal end, wherein the proximal end is coupled to the distal end of the catheter body and the proximal end is coupled to a distal end of the support wire, wherein the balloon is configured to be expanded to four or more predefined discrete diameters at four or more predefined discrete pressures;
• and
• a balloon inflation device configured to be coupled to the fluid connector and comprising a pressure gauge.