Vial adapter and injection kit for withdrawing a liquid medicament from an injection vial

A vial adapter for connecting to an injection vial that comprises a barrel and a barrel head with an outlet, wherein the outlet is sealed by a pierceable stopper and wherein the pierceable stopper comprises an inside surface, the vial adapter comprising:

• an adapter body comprising a top wall and a sidewall projecting from the top wall in a longitudinal direction to form a receptacle with a distal side of the top wall, wherein the receptacle is configured to receive at least a portion of the barrel head;
• a movable part comprising a base part and a spike fixed to the base part, wherein the spike extends through the top wall in a distal direction into the receptacle, and wherein the movable part is movable relative to the adapter body between an undeployed position and a deployed position;
• an interlock operable to lock the movable part in the undeployed position;
• and
• an actuating member extending into the receptacle,
• wherein the actuating member is coupled to the interlock and operable to unlock the interlock when actuated,
• wherein the interlock comprises a locking element configured to engage with the movable part,
• wherein the interlock is transferable from a locking configuration into a release configuration by an actuation of the actuating member,
• wherein when the locking element is in the locking configuration, a longitudinal proximal displacement of the movable part relative to the adapter body is prevented, and
• wherein when the locking element is in the release configuration, the longitudinal proximal displacement of the movable part relative to the adapter body is allowed.

An injection kit for administering a liquid medicament, the injection kit comprising:

• an injection vial comprising:
• a barrel to accommodate a liquid medicament;
• and
• a barrel head with an outlet that is sealed by a pierceable stopper and wherein the pierceable stopper comprises an inside surface;
• and
• a vial adapter comprising:
• an adapter body comprising a top wall and a sidewall projecting from the top wall in a longitudinal direction to form a receptacle with a distal side of the top wall, wherein the receptacle is configured to receive at least a portion of the barrel head;
• a movable part comprising a base part and a spike fixed to the base part, wherein the spike extends through the top wall in a distal direction into the receptacle, and wherein the movable part is movable relative to the adapter body from an undeployed position into a deployed position;
• an interlock operable to lock the movable part in the undeployed position;
• and
• an actuating member extending into the receptacle,
• wherein the actuating member is coupled to the interlock and operable to unlock the interlock when actuated,
• wherein the spike comprises:
• an elongated fluid channel;
• a tipped distal end configured to penetrate the pierceable stopper;
• and
• a channel aperture in fluid communication with the elongated fluid channel;
• an elongated channel sidewall confining the elongated fluid channel;
• a channel projection protruding laterally from the elongated channel sidewall;
• and
• a proximally facing abutment face to abut longitudinally with the inside surface of the pierceable stopper.

A method of withdrawing a liquid medicament contained in an injection vial, the method comprising:

• engaging a vial adapter with a barrel head of the injection vial, wherein the vial adapter comprises an adapter body, a movable part comprising a spike, a biasing element, an interlock, and an actuating member;
• penetrating a pierceable stopper of the injection vial in a longitudinal distal direction with the spike, wherein the pierceable stopper seals an outlet of a barrel of the injection vial;
• releasing the interlock by actuating the actuating member;
• and
• displacing the movable part from an undeployed position towards and into a deployed position by the biasing element.

A method of administering an injectable medicament from an injection vial, the method comprising:

• using a vial adapter for connecting to an injection vial;
• wherein the injection vial comprises:
• a barrel;
• and
• a barrel head with an outlet that is sealed by a pierceable stopper, wherein the pierceable stopper comprises an inside surface;
• and
• wherein the vial adapter comprises:
• an adapter body comprising a top wall and a sidewall projecting from the top wall in a longitudinal direction to form a receptacle with a distal side of the top wall, wherein the receptacle is configured to receive at least a portion of the barrel head;
• a movable part comprising a base part and a spike fixed to the base part, wherein the spike extends through the top wall in a distal direction into the receptacle, and wherein the movable part is movable relative to the adapter body between an undeployed position and a deployed position;
• a biasing element operably engaged with the adapter body and the movable part, the biasing element configured to apply a biasing force between the adapter body and the movable part to displace the movable part from the undeployed position towards and into the deployed position;
• an interlock operable to lock the movable part in the undeployed position;
• and
• an actuating member extending into the receptacle, wherein the actuating member is coupled to the interlock and operable to unlock the interlock when actuated.