Patent ID: 8870756

Claim:
An apparatus, comprising: a cap configured to be coupled to a fluid source, the fluid source defining a chamber configured to contain a fluid; a first tube coupled to the cap such that a lumen defined by the first tube is in fluid communication with the chamber of the fluid source when the cap is coupled to the fluid source, the first tube configured to fluidically couple a gas source to the chamber of the fluid source; a second tube configured to extend through a first opening in the cap such that, when the cap is coupled to the fluid source, at least a portion of the second tube is received in the chamber of the fluid source and an end of the second tube is disposed in the fluid therein, the second tube configured to convey fluid out of the chamber of the fluid source to an endoscope; a third tube configured to extend through a second opening in the cap such that, when the cap is coupled to the fluid source, at least a portion of the third tube is received in the chamber of the fluid source and an end of the third tube is disposed in the fluid therein, the third tube configured to convey fluid out of the chamber of the fluid source to the endoscope; a first check valve coupled to the second tube and configured to prevent the flow of fluid from the second tube into the chamber of the fluid source when fluid is conveyed out of the chamber of the fluid source to the third tube; and a second check valve coupled to the third tube and configured to prevent the flow of fluid from the endoscope into the chamber of the fluid source, wherein the second tube is configured to convey the fluid from the fluid source to the endoscope during a first time period, the third tube is configured to convey the fluid from the fluid source to the endoscope during a second time period, at least a portion of the second time period is concurrent with at least a portion of the first time period.