Ureteral and bladder catheters and methods of inducing negative pressure to increase renal perfusion

A ureteral catheter, comprising:

• a drainage lumen comprising a proximal portion-and a distal portion, the distal portion comprising a coiled retention portion comprising a proximal end, a distal end, and a sidewall comprising a radially inwardly facing side and a radially outwardly facing side, and wherein a first opening and a second opening are disposed on the radially inwardly facing side, and wherein the radially outwardly facing side is free of openings,
• wherein the coiled retention portion further comprises:
• at least one first coil having a first diameter;
• and
• at least one second coil having a second diameter, the first diameter being less than the second diameter, the second coil being closer to the distal end of the coiled retention portion than the first coil,
• wherein an area of the first opening which is closer to a proximal end of the coiled retention portion is less than an area of the second opening which is closer to the distal end of the coiled retention portion.