Gas control in medical fluid filters
AssigneeTessen Solutions Limited
InventorsVincent FORDE, Pauric CAREY, James ROCHE
Life of this patent
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Abstract
Gas trap and particle filter devices for uses such as intravenous delivery are described. They effectively prevent gas bubbles from migrating distally towards a patient in use. They may have a priming port (7) which is used only once and permanently sealed at priming. This port has a backcheck valve (10) which allows escape of air during priming but prevents air from entering the chamber. Such a valve is described both proximally of, and at, a particle filter (230 ) in other devices, contributing to very effective filtration with minimum risk of gas flowing onward to a patient.
Claims19
A fluid filter device for blocking of gas and/or particles in a medical fluid line, the device comprising:
- an inlet,
- an outlet, and
- a flow chamber between said inlet and outlet for flow in a flow direction distally from the inlet to the outlet, wherein the flow chamber comprises:
- an active component for trapping gas and/or particles, and
- a port with a backcheck valve to allow escape of gas from the chamber but not inflow of gas into the chamber.
Dependencies are inferred from the claim text.