Valve and a method for administering a plurality of drug fluids
First Claim
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1. A valve for administering two or more drug fluids, comprising:
- a rotational axis,a housing having;
an inner cavityan inner circumferential surface,one flushing inlet for receiving a flushing fluid, the flushing inlet being fluidly connected to a flushing outlet, which opens into the inner cavity and is positioned on a first level with respect to the rotational axis, anda plurality of drug inlets, each drug inlet for receiving an associated drug fluid and each drug inlet being fluidly connected to an associated drug outlet opening into the inner cavity and being positioned on a second level that is different from the first level; and
a rotatable valve member having;
an outer circumferential surface,a main passageway presenting an inlet arranged in the outer circumferential surface at the second level and an outlet arranged coaxially with the rotational axis; and
a transfer channel formed at an interface between the housing and the rotatable valve member, said transfer channel being located between said first and said second level for carrying the flushing fluid;
wherein the rotatable valve member is arranged to be rotated into any selected one of a plurality of drug positions, each drug position being associated with a respective one of said drug outlets; and
wherein, in each selected drug position, the drug outlet which is associated with the selected drug position is fluidly connected, simultaneously, to both the inlet of the main passageway and to the flushing outlet via the transfer channel of the rotatable member.
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Abstract
A valve and a method for administering a plurality of drug fluids to a patient are disclosed. For each drug fluid, the valve may be rotated into a selected drug position associated with the drug fluid. With the valve being in the selected drug position, a backpriming may be performed of a connector line of a drug container containing the drug fluid. Thereafter, the drug fluid may be administered with the valve being in the same selected drug position. Thereafter, the valve may be flushed, optionally while maintaining the same selected valve position.
24 Citations
17 Claims
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1. A valve for administering two or more drug fluids, comprising:
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a rotational axis, a housing having; an inner cavity an inner circumferential surface, one flushing inlet for receiving a flushing fluid, the flushing inlet being fluidly connected to a flushing outlet, which opens into the inner cavity and is positioned on a first level with respect to the rotational axis, and a plurality of drug inlets, each drug inlet for receiving an associated drug fluid and each drug inlet being fluidly connected to an associated drug outlet opening into the inner cavity and being positioned on a second level that is different from the first level; and a rotatable valve member having; an outer circumferential surface, a main passageway presenting an inlet arranged in the outer circumferential surface at the second level and an outlet arranged coaxially with the rotational axis; and a transfer channel formed at an interface between the housing and the rotatable valve member, said transfer channel being located between said first and said second level for carrying the flushing fluid; wherein the rotatable valve member is arranged to be rotated into any selected one of a plurality of drug positions, each drug position being associated with a respective one of said drug outlets; and wherein, in each selected drug position, the drug outlet which is associated with the selected drug position is fluidly connected, simultaneously, to both the inlet of the main passageway and to the flushing outlet via the transfer channel of the rotatable member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A valve for administering two or more drug fluids comprising:
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an outlet, a rotational axis, a housing having; an inner cavity an inner circumferential surface, one flushing inlet for receiving a flushing fluid, the flushing inlet being fluidly connected to a flushing outlet of the housing, which opens into the inner cavity and is positioned on a first level with respect to the rotational axis, and a plurality of drug inlets, each drug inlet for receiving an associated drug fluid and each drug inlet being fluidly connected to an associated drug outlet opening of the housing into the inner cavity and being positioned on a second level that is different from the first level; and a rotatable valve member having; an outer circumferential surface, a main passageway presenting an inlet arranged in the outer circumferential surface at the second level and an outlet arranged coaxially with the rotational axis; and a transfer channel formed at an interface between the housing and the rotatable valve member, said transfer channel being located between said first and said second level for carrying the flushing fluid; wherein the valve member is arranged to be rotated into any selected one of a plurality of drug positions, each drug position being associated with a respective one of said drug outlets; and wherein the valve presents simultaneously, in each selected drug position; a drug flow path extending from the associated drug outlet, through the main passageway, and to the outlet of the valve, a flushing flow path extending from the flushing outlet to the outlet of the valve and comprising a first part, including the transfer channel, not being common with the drug flow path and a second part, including the main passage way, being common with the drug flow path, and a backpriming flow path extending from the flushing outlet to the associated drug outlet and being at least partly common with the first part of the flushing flow path.
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Specification