Double Lumen Urine Drainage Tube with Integrated Pump

A method of draining urine from a patient, comprising:

• catheterizing the patient via a urinary catheter in fluid communication with a drainage tube of a drainage tube assembly, the drainage tube (i) coupled with the urinary catheter adjacent a distal end of the drainage tube and (ii) coupled with a collection container adjacent a proximal end of the drainage tube;
• establishing a flow of urine along the drainage tube from the urinary catheter to the collection container;
• applying a first positive pressure externally to the drainage tube along an entire length of the drainage tube to collapse a first portion of the drainage tube, the first portion disposed distal pooled urine within the drainage tube;
• and
• applying a second positive pressure externally to the drainage tube along the entire length of the drainage tube to collapse a second portion of the drainage tube, the second portion disposed proximal the first portion,
• wherein:
• the second positive pressure is greater than the first positive pressure, and
• collapsing the second portion displaces the pooled urine proximally along the drainage tube.