Linearly actuated flow controller for intravenous (IV) fluid administration

A flow controller for intravenous (IV) tubing, the flow controller comprising:

• a first ramped wedge structure having a first inner surface and a first outer surface;
• a second ramped wedge structure having a continuous second inner surface parallel to the first inner surface and a second outer surface parallel to the first outer surface, the second ramped wedge structure configured to slide over the first ramped wedge structure to compress a portion of the IV tubing disposed between the first ramped wedge structure and the second ramped wedge structure;
• a yoke having a linear slot;
• a wheel having a pin that is radially separated form a center of the wheel and is slidably disposed in the linear slot;
• and
• a transfer structure coupled to the yoke and the first ramped wedge structure.

An intravenous (IV) set, comprising:

• a flow controller configured to be coupled to medical tubing, wherein the flow controller comprises:
• first and second structural members that define a cavity therebetween for receiving a portion of the medical tubing, the first structural member having a first continuous outer surface and a first inner surface disposed at an angle to the first outer surface, and the second structural member having a second continuous outer surface parallel to the first continuous outer surface and a second continuous inner surface parallel to the first inner surface;
• and
• a third structural member coupled between the cavity and one of the first or second structural member, the third structural member comprising a friction-reducing surface for at least a portion of the cavity,
• wherein the first structural member is linearly slidable relative to the second structural member, in a direction that is non-perpendicular to the second structural member, and wherein a size of the cavity is reduced as the first structural member is slid relative to the second structural member.