Patent ID: 7308300

Claim:
An injectate delivery device comprising: first and second syringes each having a distal end; a catheter connector attachable to a percutaneous implement; a fluid communication network, fluidly connecting the distal ends of the first and second syringes to the catheter connector, the network including a shuttle valve constructed and arranged to selectively port fluid from one of the first and second syringes to the catheter connector while blocking fluid from the other of the first and second syringes, wherein the shuttle valve comprises: a housing defining a common inner chamber and three connection openings, at least two of the connection openings fluidly leading into the common inner chamber through passageways narrower than the common inner chamber, and defined by shoulders extending inwardly from the housings two plugs, each having a diameter smaller than that of the common inner chamber and larger than that of the passageways, the plugs and shoulders constructed and arranged such that the plugs form seals against the respective shoulders when the plugs are pressed there against; a common biasing mechanism contained within the common inner chamber and constructed and arranged such that the plugs are forced against their respective shoulders by the common biasing mechanism, thereby forming a seal there against, unless one of the plugs is overcome by fluid pressure from one of the syringes, being forced inwardly, away from its respective shoulder, thereby allowing fluid to flow from the pressure-providing syringe, and into the catheter connector.