Patent ID: 8469939

Claim:
A vial adaptor configured to be attachable to a vial having an opening and a seal wherein the seal defines a fluid barrier surface, the vial adaptor comprising: a body portion; a penetrating portion supported by the body portion, the penetrating portion projecting from a first surface of the body portion and comprising an outer surface and a distal end portion, the penetrating portion being configured to be inserted through the seal past the fluid barrier surface so as to be positioned within an interior space of the vial; an interface portion supported by the body portion, the interface portion projecting away from a second surface of the body portion; at least one deflectable tab comprising a proximal end, a distal end, and a protruding portion, the proximal end being supported by the body portion; a first opening disposed axially through at least a portion of the penetrating portion; and a second opening disposed axially through at least a portion of the penetrating portion; wherein: the second opening comprises a first end portion and a second end portion and is configured such that the first end portion is in communication with a transverse opening and the second end portion passes through the outer surface of the penetrating portion; and wherein the body portion comprises a biasing member configured to bias the vial against the at least one deflectable tab and away from the first surface of the body portion to hold the second end portion of the second opening within the interior space of the vial proximate to the fluid barrier surface of the vial seal in a position which facilitates the removal of a majority of fluid from the vial.