A medical system (825, 825a) configured to receive, dispense and re-use a first portion of a sterile medium injected by a syringe, the system (825, 825a) comprising: a reservoir (827, 827a, 827b) comprising a chamber (834, 860); a first fluid pathway comprising a first fluid conduit (588a, 578) connected to the syringe, said first fluid conduit (588a, 578) comprising a one-way valve configured to allow flow from the syringe to the chamber (834, 860); a second fluid pathway comprising a second fluid conduit connected to the chamber (834, 860) of the reservoir (827, 827a, 827b) and to a first manifold, said first manifold comprising a three-way fluid conduit connection between the chamber (834, 860), the syringe and a patient delivery catheter; a second manifold (835, 835a, 840) that connects the first fluid conduit and the second fluid conduit; and a third fluid pathway comprising a third fluid conduit (588b, 588c) connected to a sterile medium container, said third fluid conduit (588b, 588c) comprising a one-way valve (841, 841a, 841b) configured to allow flow from the sterile medium container to the second fluid conduit; wherein, during an injection of the sterile medium from the syringe, the second fluid conduct is closed at the three-way fluid conduit connection such that the injection simultaneously directs the first portion of the sterile medium injected by the syringe to the chamber (834, 860) of the reservoir (827, 827a) and directs a second portion of the sterile medium injected by the syringe to the patient delivery catheter; and wherein the reservoir (827, 827a, 827b) is configured to impart a biasing force so as to urge the first portion of the sterile medium out of the chamber (834, 860); and wherein, during filling of the syringe with sterile medium, the second fluid conduit is open at the three-way fluid conduit connection such that the filling directs the first portion of the sterile medium from the chamber (834, 860) and into the syringe. a reservoir (827, 827a, 827b) comprising a chamber (834, 860); a first fluid pathway comprising a first fluid conduit (588a, 578) connected to the syringe, said first fluid conduit (588a, 578) comprising a one-way valve configured to allow flow from the syringe to the chamber (834, 860); a second fluid pathway comprising a second fluid conduit connected to the chamber (834, 860) of the reservoir (827, 827a, 827b) and to a first manifold, said first manifold comprising a three-way fluid conduit connection between the chamber (834, 860), the syringe and a patient delivery catheter; a second manifold (835, 835a, 840) that connects the first fluid conduit and the second fluid conduit; and a third fluid pathway comprising a third fluid conduit (588b, 588c) connected to a sterile medium container, said third fluid conduit (588b, 588c) comprising a one-way valve (841, 841a, 841b) configured to allow flow from the sterile medium container to the second fluid conduit; wherein, during an injection of the sterile medium from the syringe, the second fluid conduct is closed at the three-way fluid conduit connection such that the injection simultaneously directs the first portion of the sterile medium injected by the syringe to the chamber (834, 860) of the reservoir (827, 827a) and directs a second portion of the sterile medium injected by the syringe to the patient delivery catheter; and wherein the reservoir (827, 827a, 827b) is configured to impart a biasing force so as to urge the first portion of the sterile medium out of the chamber (834, 860); and wherein, during filling of the syringe with sterile medium, the second fluid conduit is open at the three-way fluid conduit connection such that the filling directs the first portion of the sterile medium from the chamber (834, 860) and into the syringe.