Patent ID: 6918893

Claim:
A fluid control valve for controlling fluid flow between a catheter, a saline supply, a waste dump, a contrast supply and an injector, the control valve comprising: a valve body comprising a cylindrical bore and an outer surface, the valve body further comprising at least seven passages providing communication between the cylindrical bore and the outer surface, the at least seven passages comprising a saline output passage connected to the catheter, a contrast output passage connected to the catheter, a waste output passage connected to the waste dump, a contrast input passage connected to the contrast supply, a saline input passage connected to a saline supply, a waste input passage connected to the catheter, and at least one injector passage connected to the injector, a cylindrical valve stem rotably received in the cylindrical bore, the valve stem having a central axis, the valve stem further comprising at least one connecting passage extending through the valve stem, the at least one connecting passage selectively connecting the at least one injector passage to at least one of the saline output passage, the waste input passage or the contrast output passage depending upon a rotational position of the valve stem, the valve stem further comprising a linking passage connecting the saline input passage to the connecting passage, the waste output passage to the connecting passage or the contrast input passage to the connecting passage depending upon the rotational position of the valve stem, the valve stem being rotatable within the cylindrical bore to at least three rotational positions including a contrast position where the connecting passage of the valve stem provides communication between the at least one injector passage and the contrast output passage and the linking passage provides communication between the connecting passage and the contrast input passage, a saline position where the connecting passage provides communication between the injector passage and the saline output passage and the linking passage provides communication between the connecting passage and the saline input passage and a waste position where the connecting passage provides communication between the injector passage and the waste input passage and the linking passage provides communication between the connecting passage and the waste output passage.