An infusion set wherein it has a cap, for installation on a spike or a connector for connection with an intravenous drip needle, arranged at which there is an opening configured so as to not allow passage therethrough of solid or liquid but so as to allow passage therethrough of gas at the interior of the cap, a hydrophobic filter being arranged at a location inward from where the tip of the spike or the connector for connection with the intravenous drip needle is inserted at the interior of the cap by way of an insertion port for the spike or the connector for connection with the intravenous drip needle, and a lid at the exterior of said opening for closing said opening;
- the spike;
- a three-way stopcock having a primary tubing downstream branch connector equipped with a mechanism that connects in such fashion as to permit rotation about primary tubing as axis;
- a male connector;
- a drip chamber;
- a roller clamp;
- the connector for connection with the intravenous drip needle;
- infusion tubing;
- a shutoff clamp for pressing on and opening and/or closing a flow path within the infusion tubing;
- and an optional filter bag;
- wherein a spike is provided at an upstream-most location in the infusion set, said spike being connected to one end of infusion tubing equipped with a shutoff clamp for pressing on and opening and/or closing a flow path within infusion tubing, the other end of said infusion tubing being connected to a primary tubing upstream branch connector of a three-way stopcock having a primary tubing downstream branch connector equipped with a mechanism that connects in such fashion as to permit rotation about primary tubing as axis, and connected to a secondary tubing branch connector at said three-way stopcock there is one end of infusion tubing equipped with a shutoff clamp for pressing on and opening and/or closing a flow path within infusion tubing, and a spike covered with the aforesaid cap at the other end of said infusion tubing, and further connected to a primary tubing downstream branch connector of said three-way stopcock there is or are optionally one or more three-way stopcocks connected to one end of infusion tubing equipped with shutoff clamps for pressing on and opening and/or closing flow paths within infusion tubing connected to spikes covered with caps for installation on the aforesaid spikes at secondary tubing branch connectors and having primary tubing downstream branch connectors equipped with mechanisms that connect in such fashion as to permit rotation about primary tubing as axes;
- wherein a male connector is further connected to a primary tubing downstream branch connector of that which among the aforesaid three-way stopcocks is disposed at a downstream location, one end of infusion tubing equipped with a shutoff clamp for pressing on and opening and/or closing a flow path within infusion tubing being further connected thereto, and a drip chamber being connected to the other end of said infusion tubing, said drip chamber being connected to one end of infusion tubing on which a roller clamp is installed, the other end of said infusion tubing being connected to a primary tubing upstream branch connector of a three-way stopcock having a primary tubing downstream branch connector equipped with a mechanism that connects in such fashion as to permit rotation about primary tubing as axis, a primary tubing downstream branch connector of said three-way stopcock being connected to a male connector, one end of infusion tubing being further connected thereto, and optionally a filter bag and infusion tubing downstream therefrom being connected to the other end of said infusion tubing, and further connected to the other end of said infusion tubing there is a primary tubing upstream branch connector of a three-way stopcock having a primary tubing downstream branch connector equipped with a mechanism that connects in such fashion as to permit rotation about primary tubing as axis, a primary tubing downstream branch connector of said three-way stopcock being connected to a male connector, one end of infusion tubing being further connected thereto, and a connector for connection with an intravenous drip needle covered with a cap for installation on the aforesaid connector for connection with an intravenous drip needle being connected to the other end of said infusion tubing.