Medical stopcock, kit comprising such a stopcock, and method for preparing a mixture or an emulsion
Inventors
Assignees
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Publication Number
US-10561832-B2
Publication Date
2020-02-18
Expiration Date
Abstract
A medical stopcock comprising a body provided with three female connectors and a male connector, at least one of the female connectors being designed to receive an injection syringe; and a mobile plug which is mounted in the body, is provided with a rotation lever and comprises a fluid circulation channel; wherein the female connector designed to receive an injection syringe comprises a fool proofing device in order to prevent a mixing syringe from being mounted on this connector.
Core Innovation
The invention relates to a medical stopcock for preparing injectable mixtures and/or injection-ready emulsions. The medical stopcock comprises a body provided with three female connectors and a male connector, at least one female connector being designed to receive an injection syringe and at least one female connector being designed to receive a mixing syringe. The body and connectors are configured so that the mobile plug can control fluidic communication between the connected syringes and downstream elements for injection preparation.
The medical stopcock further includes a mobile plug mounted in the body, the mobile plug being provided with a rotation lever and comprising a fluid circulation channel. The fluid circulation path restricts communication so only the intended fluid handling action occurs at a time, namely mixing, transferring to the injection syringe, or injecting. The mobile plug and the fluid circulation channel cooperate with the connector arrangement to control how many connectors can be brought into fluidic communication.
A fool proofing device is provided on the female connector designed to receive the injection syringe, in order to prevent the mixing syringe from being mounted on this connector. The fool proofing device is defined by structural geometry, including projection-based features on the connector that form insertion spaces that are not compatible with the mixing syringe. The disclosed connector-specific fool proofing is complemented by corresponding structural features on the syringes, such that mixing syringes cannot be mounted to the injection-syringe connector.
Claims Coverage
Independent claim clm-00001 defines the overall medical stopcock architecture and the fool-proofing arrangement on the injection-syringe connector. Dependent claims refine the fool-proofing structure, the fluid-circulation communication constraint, and add preparation kit and method aspects for making a mixture/emulsion and transferring it to an injection syringe, including structural compatibility constraints between syringes and the fool-proofing device.
Medical stopcock with multiple connectors and rotatable plug
A medical stopcock comprising a body provided with three female connectors and a male connector, at least one female connector designed to receive an injection syringe and at least one female connector designed to receive a mixing syringe; and a mobile plug mounted in the body, provided with a rotation lever and comprising a fluid circulation channel.
Fool-proofing device on injection-syringe connector
The medical stopcock wherein the female connector designed to receive an injection syringe comprises a fool proofing device in order to prevent the mixing syringe from being mounted on this connector.
Projection-based fool-proofing geometry
The medical stopcock wherein the fool proofing device is made from two opposite-side projections on the female connector for an injection syringe, each projection creating an insertion space between the projection and the female connector.
Single-path fluid circulation limiting communication
The medical stopcock in which the fluid circulation channel is a single-path passage with two openings, and the stopcock body and openings are arranged so that positioning the mobile plug can bring at most two connectors into fluidic communication.
Preparation kit with mixing syringes including blocking fins
A preparation kit including mixing syringes, each having at least one fin at their end to prevent connection to a connector that has a fool proofing device.
Size-matched gripping beads for compatible injection syringe
The preparation kit wherein an injection syringe has distal end gripping beads sized smaller than the distance between the projections on a connector fool-proofing device.
Method for preparing mixture/emulsion and transferring to injection syringe
A method to prepare a mixture or injection-ready emulsion by connecting mixing syringes to a medical stopcock, mixing an aqueous solution with an oil via reciprocating syringe pistons until an emulsion forms, and transferring some or all of the result to an injection syringe for administration.
Across the dependent refinements, the claim set emphasizes a medical stopcock body with three female connectors and a male connector plus a mobile plug with a fluid circulation channel, a fool-proofing device on the injection-syringe connector that prevents mounting a mixing syringe, and compatibility-enforcing structures on syringes, alongside a preparation kit and a method for preparing a mixture or injection-ready emulsion and transferring it to an injection syringe.
Stated Advantages
Prevents the mixing syringe from being mounted on the injection-syringe connector.
Restricts fluidic communication so that only a limited set of connectors can be brought into fluidic communication.
Documented Applications
TransArterial ChemoEmbolization (TACE) preparation, including preparation of an emulsion involving an aqueous anticancer agent and iodinated oil.
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