Rotary manifold syringe
View Patent ↗A fluid control apparatus is disclosed for controlling fluid flow between a catheter, an injector, a saline supply, a waste dump and a contrast supply. The apparatus includes a valve stem movable within a cavity disposed in a valve body. The valve stem is movable to a plurality of positions including a contrast position where the valve stem provides communication between the injector and a contrast supply, a saline/waste position where the valve stem provides communication between the injector and a saline/waste line and an injection position where the valve stem provides communication between the injector and an outlet port connected to the catheter.
1. A fluid control apparatus for controlling fluid flow between a catheter, an injector, a saline supply, a waste dump, and a contrast supply, the apparatus comprising:
a body comprising a cavity, an outer surface and a plurality of ports providing communication between the cavity and the outer surface, the plurality of ports comprising at least one outlet port connected to the catheter, a contrast port connected to the contrast supply, at least one saline/waste port connected to the saline supply and the waste dump, the body being connected to the injector to provide communication between the injector and the cavity,
the cavity accommodating a valve stem,
the valve stem comprising a plurality of connecting passages extending through the valve stem including a contrast passage, a saline/waste passage and an injection passage that selectively provide communication between the cavity and the contrast port, the saline/waste port and the outlet port respectively depending upon a position of the valve stem,
the valve stem being movable within the cavity to at least three positions including a contrast position where the contrast passage of the valve stem provides communication between the cavity and the contrast port, a saline/waste position where the saline/waste passage provides communication between the cavity and the saline/waste port and an injection position where the injection passage provides communication between the cavity and the outlet port.
2. The fluid control apparatus of claim 1 wherein in the contrast position, the contrast passage provides communication between the contrast port and the cavity and the valve stem isolates the saline/waste and outlet ports.
3. The fluid control apparatus of claim 1 wherein in the saline/waste position, the saline/waste passage provides communication between the cavity and the saline/waste port and the valve stem isolates the contrast and outlet ports.
4. The fluid control apparatus of claim 1 wherein in the injection position, the injection passage provides communication between the cavity and the outlet port and the valve stem isolates the contrast and saline/waste ports.
5. The fluid control apparatus of claim 1 wherein the body further comprises a pressure transducer port providing communication between the cavity and the outer surface, the valve stem further comprises a pressure transducer passage extending through the valve stem and selectively providing communication between the pressure transducer port and the outlet port, and
in the contrast position, the pressure transducer passage provides communication between the pressure transducer port and the outlet port.
6. The fluid control apparatus of claim 1 wherein the body further comprises a pressure transducer port providing communication between the cavity and the outer surface, the valve stem further comprises a pressure transducer passage extending through the valve stem and selectively providing communication between the pressure transducer port and the outlet port, and
in the saline/waste position, the second pressure transducer passage provides communication between the pressure transducer port and the outlet port.
7. The fluid control apparatus of claim 1 wherein the body further comprises a pressure transducer port providing communication between the cavity and the outer surface, the valve stem further comprises a pressure transducer passage extending through the valve stem and selectively providing communication between the pressure transducer port and the outlet port, and
in the injection position, the valve stem isolating the pressure transducer port from the outlet port.
8. The fluid control apparatus of claim 1 wherein the body further comprises a pressure transducer port providing communication between the cavity and the outer surface, the valve stem further comprises first and second pressure transducer passages that extend through the valve stem and selectively provide communication between the pressure transducer port and the outlet port, and
in the contrast position, the first pressure transducer passage provides communication between the pressure transducer port and the outlet port,
in the saline/waste position, the second pressure transducer passage provides communication between the pressure transducer port and the outlet port, and
in the injection position, the valve stem isolating the pressure transducer port from the outlet port.
9. The fluid control apparatus of claim 8 wherein the valve stem further comprises a third pressure transducer passage extending through the valve stem and selectively providing communication between the pressure transducer port and the outlet port,
the valve stem further being movable to a pressure reading position where the valve stem isolates the contrast and saline/waste ports and where the third pressure transducer passage provides communication between the pressure transducer port and the outlet port.
10. The fluid control apparatus of claim 1 wherein the body further comprises a pressure transducer port providing communication between the cavity and the outer surface,
the valve stem further comprises a pressure transducer passage extending through the valve stem and selectively providing communication between the pressure transducer port and the outlet port,
the valve stem further being movable to a pressure reading position where the valve stem isolates the contrast and saline/waste ports and where the pressure transducer passage provides communication between the pressure transducer port and the outlet port.
11. The fluid control apparatus of claim 1 wherein the valve stem is rotatably accommodated within the distal region of the cavity.
12. The fluid control apparatus of claim 1 wherein the valve stem is slidably accommodated within the distal region of the cavity.
13. The fluid control apparatus of claim 1 wherein the injector is a syringe.
14. The fluid control apparatus of claim 1 wherein the injector is a pump.
15. The fluid control apparatus of claim 1 wherein the saline/waste port comprises a separate saline port connected to the saline supply and a separate waste port connected to the waste dump, the saline/waste passage of the valve stem further comprises a separate saline passage and a separate waste passage, the valve stem being movable within the cavity to at least four positions including the contrast position where the contrast passage of the valve stem provides communication between the cavity and the contrast port, a saline position where the saline passage provides communication between the cavity and the saline port, a waste position where the waste passage provides communication between the cavity and the waste port and the injection position where by the injection passage provides communication between the cavity and the outlet port.
16. The fluid control apparatus of claim 15 wherein
in the saline position, the saline passage provides communication between the cavity and the saline port and the valve stem isolates the contrast, waste and outlet ports.
17. The fluid control apparatus of claim 15 wherein
in the waste position, the waste passage provides communication between the cavity and the waste port and the valve stem isolates the contrast, saline and outlet ports.
18. The fluid control apparatus of claim 15 wherein the body further comprises a pressure transducer port providing communication between the cavity and the outer surface, the valve stem further comprises a pressure transducer passage extending through the valve stem and selectively providing communication between the pressure transducer port and the outlet port, and
in the saline position, the pressure transducer passage provides communication between the pressure transducer port and the outlet port.
19. The fluid control apparatus of claim 15 wherein the body further comprises a pressure transducer port providing communication between the cavity and the outer surface, the valve stem further comprises a pressure transducer passage extending through the valve stem and selectively providing communication between the pressure transducer port and the outlet port, and
in the waste position, the pressure transducer passage provides communication between the pressure transducer port and the outlet port.
20. A fluid control valve for controlling fluid flow between a catheter, a saline supply, a waste dump, a contrast supply, a pressure transducer and an injector, the control valve comprising:
a valve means movable to a plurality of positions including a contrast position where the valve means provides communication between the injector and the contrast supply while isolating the saline supply, waste dump, catheter, and pressure transducer,
a saline position where the valve means provides communication between the injector and the saline supply while isolating the contrast supply, waste dump, catheter, and pressure transducer,
a waste position where the valve means provides communication between the injector and the waste dump while isolating the contrast supply, saline supply, catheter, and pressure transducer,
an injection position where the valve means provides communication between the injector and the catheter while isolating the contrast supply, saline supply and waste dump,
wherein the valve means also maintains communication between the catheter and the pressure transducer in at least one of the contrast and saline positions.
21. A fluid control valve for controlling fluid flow between a catheter, a saline supply, a waste dump, a contrast supply, a pressure transducer and an injector, the control valve comprising:
a valve means movable to a plurality of positions including
a contrast position where the valve means provides communication between the injector the contrast supply while isolating the saline supply, waste dump, catheter and pressure transducer from the injector but providing communication between the catheter and the pressure transducer,
a saline position where the valve means provides communication between the injector and the saline supply while isolating the contrast supply, waste dump, catheter and pressure transducer from the injector but providing communication between the catheter and the pressure transducer;
a waste position where the valve means provides communication between the injector and the waste dump while isolating the contrast supply, saline supply, catheter and pressure transducer from the injector but providing communication between the catheter and the pressure transducer; and
an injection position where the valve means provides communication between the injector and the catheter while isolating the pressure transducer, contrast supply and waste dump.
22. A fluid control apparatus for controlling fluid flow between a catheter, a saline supply, a waste dump, and a contrast supply, the apparatus comprising:
a body comprising an open proximal end, a closed distal end, a cavity and an outer surface,
the cavity comprising a proximal region for accommodating a plunger and a distal region for accommodating a valve stem,
the distal end of the body comprising a plurality of ports providing communication between the cavity and the outer surface, the plurality of ports comprising at least one outlet port connected to the catheter, a contrast port connected to the contrast supply, a saline port connected to the saline supply, and a waste port connected to the waste dump,
the valve stem comprising a plurality of connecting passages extending through the valve stem including a contrast passage, a saline passage, a waste passage and an injection passage that selectively provide communication between the proximal region of the cavity and the contrast port, the saline port, the waste port and the outlet port respectively depending upon a position of the valve stem,
the valve stem being movable within the cavity to a plurality of positions including a contrast position where the contrast passage of the valve stem provides communication between the proximal region of the cavity and the contrast port, a saline position where the saline passage provides communication between the proximal region of the cavity and the saline port, a waste position where the waste passage provides communication between the proximal region of the cavity and the waste port and an injection position where the injection passage provides communication between the proximal region of the cavity and the outlet port.
23. The fluid control apparatus of claim 22 wherein the open proximal end of the body is connected to a syringe.
24. The fluid control apparatus of claim 22 wherein the open proximal end of the body is connected to a pump.
25. The fluid control apparatus of claim 22 wherein the body further comprises a separating wall disposed between the proximal and distal regions of the cavity, the separating wall comprising an aperture providing fluid communication between the proximal and distal regions of the cavity.