Variable flow rate controller
AssigneeAcacia, Inc.
InventorsDongchul D. Hyun, Michael Fleury
Life of this patent
Estimating the term…
Abstract
A variable flow rate controller is provided herein. The controller may have a linearly traversable switch such that the controller is primed to flush air bubbles out of the fluid system of the controller prior to administering fluidic medication to a patient. Moreover, the controller may have a plurality of valves which may be independently opened and closed by a caming surface. To close the valve, a first seal may be disposed between offset inlet and outlet to prevent fluid from flowing from the inlet to the outlet. To open the valve, the first seal is disposed on one side of both of the inlet and outlet. Fluid if permitted to flow from the inlet to the outlet.
Claims12
A variable fluid flow controller for providing a selected flow rate of fluid to a patient, the controller comprising:
- a first manifold having an inlet connectable to a fluid source and a plurality of outlets;
- a plurality of valves, each valve having:
- an outlet and an inlet axially offset from each other, the inlets of the plurality of valves in fluid communication with the plurality of outlets of the first manifold;
- a first seal slidably disposable to a closed position intermediate the offset outlet and inlet of the valve for blocking fluid from flowing from the inlet to the outlet or to an open position on one side of both the offset outlet and inlet of the valve for permitting, fluid to flow through the valve;
- a switch operative to traverse the first seals of the plurality of valves to the open position and the closed position, the switch sequentially traversable from a first off position to a second prime position, a third flow rate position and a fourth flow rate position having a flow rate greater than a flow rate of the third flow rate position but lower than a flow rate of the second prime position, a flow rate being zero at the first off position;
- a plurality of flow restrictors, at least two of the plurality of flow restrictors defining different fluid flow rates, the plurality of flow restrictors in fluid communication with the outlets of the plurality of valves to provide the selected flow rate of fluid based on the position of the first seal;
- and
- a second manifold having a plurality of inlets in fluid communication with the plurality of flow restrictors and an outlet fluidically communicable with the patient.
A variable fluid flow controller for providing a selected flow rate of fluid to a patient, the controller comprising:
- a first manifold having an inlet connectable to a fluid source and a plurality of outlets;
- a plurality of valves, each valve having an outlet and an inlet, the inlets of the plurality of valves in fluid communication with the outlets of the first manifold, at least two valves of the plurality of valves traversable between an open position for permitting fluid to flow through the valve and a closed position for blocking fluid from flowing through the valve;
- a linearly traversable switch having a caming surface operative to simultaneously traverse at least two of the plurality of valves between the closed position and the open position, the switch sequentially traversable from a first off position to a second prime position, a third flow rate position and a fourth flow rate position having a flow rate greater than a flow rate of the third flow rate position but lower than a flow rate of the second prime position, a flow rate being zero at the first off position;
- a plurality of flow restrictors, at least two of the plurality of flow restrictors defining different fluid flow rates, the plurality of flow restrictors in fluid communication with the outlets of the plurality of valves;
- and
- a second manifold having a plurality of inlets in fluid communication with the plurality of flow restrictors and an outlet fluidically communicable with the patient.
A variable fluid flow controller for providing a selected flow rate of fluid to a patient, the controller comprising:
- a first manifold having an inlet connectable to a fluid source and a plurality of outlets;
- a plurality of valves, each valve having an outlet and an inlet, the inlets of the plurality of valves in fluid communication with the outlets of the first manifold, at least two valves of the plurality of valves traversable between an open position for permitting fluid to flow through the valve and a closed position for blocking fluid from flowing through the valve;
- a switch having a caming surface operative to traverse only one of the plurality of valves to the open position and the remaining valves to the closed position, the switch sequentially traversable from a first off position to a second prime position, a third flow rate position and a fourth flow rate position having a flow rate greater than a flow rate of the third flow rate position but lower than a flow rate of the second prime position, a flow rate being zero at the first off position;
- a plurality of flow restrictors, at least two of the plurality of flow restrictors defining different fluid flow rates, the plurality of flow restrictors in fluid communication with the outlets of the plurality of valves;
- and
- a second manifold having a plurality of inlets in fluid communication with the plurality of flow restrictors and an outlet fluidically communicable with the patient.
Dependencies are inferred from the claim text.