Tubing assemblies and methods for fluid delivery

A tubing assembly arranged and configured to couple to an endoscope for distributing fluid between the endoscope and a fluid reservoir during an endoscopic procedure, the assembly comprising:

• a tubing manifold, comprising:
• a gas channel having a gas opening, an alternate gas opening, and a combined gas/alternate gas opening, and
• a liquid channel having an irrigation opening, a lens wash opening, and a combined lens wash/irrigation opening;
• a cap configured to be removably attached to the fluid reservoir;
• gas supply tubing, a portion of which is configured for connection in fluid communication between the gas opening of the manifold and the endoscope, and a portion of which is configured for connection in fluid communication between the cap and the combined gas/alternate gas opening of the manifold;
• and
• alternate gas supply tubing, a portion of which is configured for connection in fluid communication between the alternate gas opening of the manifold and the endoscope, and a portion of which is configured for connection in fluid communication between the cap and the combined gas/alternate gas opening of the manifold;
• lens wash supply tubing, a portion of which is configured for connection in fluid communication between the lens wash opening of the manifold and the endoscope, a portion of which is configured for connection in fluid communication between the fluid reservoir and the combined lens wash/irrigation opening of the manifold;
• and
• irrigation supply tubing, a portion of which is configured for connection in fluid communication between the irrigation opening of the manifold and the endoscope, a portion of which is configured for connection in fluid communication between the fluid reservoir and the combined lens wash/irrigation opening of the manifold.