Medicine vial adaptor for needleless injector

A - Human Necessities – 61 – M

Patent

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128/65

A61M 5/30 (2006.01)

Patent

CA 1256343

- 1 - Abstract A disposable plastic adaptor connects a medicine vial to a needleless injector. It includes a hollow, generally cylindrical body member having a top end and a bottom end, with a wall dividing said hollow body into a generally cylindrical top end cavity and bottom end cavity. The bottom end cavity is adapted to slide over the top end of a medicine vial and the cavity wall includes a plurality of detents which prevent removal of the adaptor from the vial. The top end cavity is adapted to be twist connected to the end of a needleless injector. A fluid connector member is mounted within the body member and it comprises a sharp tipped probe extending axially downwardly within the bottom end cavity and an axial projection with a con- cave end face extending axially upwardly within the top end cavity. An axial bore extends through the fluid con- nector member to flow connect the concave end face and the probe tip. This probe, preferably in the form of a hollow needle, is adapted to penetrate the top of a medicine vial and the concave end face is adapted to provide a fluid tight seal with a convex end face of a cylindrical medi- cine syringe within the needleless injector.

493529

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