One way valve
AssigneeViCentra B.V.
InventorJoseph John Cefai
Life of this patent
Estimating the term…
Abstract
An one way valve comprising: a conical shaped valve seat (1); and a membrane (2) having a hole (3) that is located around the conical valve seat (1), such that a surface (60) of the valve seat (1) seals onto an inner periphery (61) of the hole in the membrane (2), wherein, in use, the membrane (2) is deflected from the surface (60) of the valve seat (1) to provide a fluid path across the membrane (2) and allowing fluid to flow from one side of the membrane (2) to the other.
Claims26
A pump comprising a pumping chamber, an inlet valve arranged at an inlet of the pumping chamber, and an outlet valve arranged at an outlet of the pumping chamber, wherein the inlet valve and the outlet valve are each passive one-way valves comprising:
- a conical shaped valve seat having a conical surface and a base surrounding the conical surface;
- and
- a membrane having a hole that is located around the conical surface of the valve seat such that at least a portion of the valve seat projects through the hole, wherein an inner periphery of the hole is configured to seal against the conical surface of the valve seat when the valve is closed and the membrane is configured to deflect away from the conical surface to provide a fluid path across the membrane;
- wherein one or more apertures are formed in the base of the valve seat and form part of the fluid path across the membrane.
A medication delivery device comprising:
- a pump, the pump comprising:
- a pumping chamber;
- an inlet valve arranged at an inlet of the pumping chamber;
- and
- an outlet valve arranged at an outlet of the pumping chamber;
- wherein the inlet valve and the outlet valve are each passive one-way valves comprising:
- a conical shaped valve seat;
- and
- a membrane having a hole that is located around a conical surface of the valve seat such that at least a portion of the valve seat projects through the hole, wherein an inner periphery of the hole is configured to seal against the conical surface of the valve seat when the valve is closed and the membrane is configured to deflect away from the conical surface to provide a fluid path across the membrane.
A micro pump comprising:
- a pumping chamber;
- an inlet valve arranged at an inlet of the pumping chamber;
- and
- an outlet valve arranged at an outlet of the pumping chamber;
- wherein the inlet valve and the outlet valve are each passive one-way micro valves comprising:
- a conical shaped valve seat;
- and
- a membrane having a hole that is located around a conical surface of the valve seat such that at least a portion of the valve seat projects through the hole, wherein an inner periphery of the hole is configured to seal against the conical surface of the valve seat when the valve is closed and the membrane is configured to deflect away from the conical surface to provide a fluid path across the membrane.
A micro pump for a medication delivery device, the micro pump comprising:
- a one-way micro valve, the one-way micro valve comprising:
- a conical shaped valve seat;
- and
- a membrane having a hole that is located around the conical valve seat, such that a surface of the valve seat seals onto an inner periphery of the hole in the membrane, wherein, in use, the membrane is deflected from the surface of the valve seat to provide a fluid path across the membrane and allowing fluid to flow from one side of the membrane to the other, wherein the conical valve seat protrudes through the hole and the surface of the valve seat seals onto an edge of the inner periphery of the hole in the membrane.
Dependencies are inferred from the claim text.