Abstract: A system for clamping two tubular members together in an end-to-end relationship uses a split ring with a V-shaped outer rim that can engage a clamping surface on each member. The split ring has a relaxed closed state where the ends of the ring are adjacent and the outside diameter of the split ring is less than the minimum inside diameter of the members at their ends. The members are clamped when the split ring is spread into an elastically stretched position where the ring rim is pressed tightly against the interior surfaces of the members. Mechanisms are provided for removing the spreader so the split ring will return to the relaxed state, releasing the clamped members.

Abstract: A valve having a continuously adjustable flow rate which can be used in an insufflator. The valve includes an inlet fluidly coupled with a fluid supply, a chamber fluidly coupled with the inlet, a perforated disk, an outlet, and a two-sided dynamic seal arranged about the perforated disk and having a first side fluidly coupled with the chamber and a second side fluidly coupled with the outlet. By varying a rotational velocity (or frequency) of the perforated disk, the flow rate of the valve can be continuously adjusted.