Patent ID: 8123736

Claim:
A cap adapter configured for the transfer of liquid from a medicament vial into a syringe, the vial having a mouth closed by a sealing stopper, the cap adapter comprising: a transverse wall portion configured to fit over the mouth of the vial and having a proximal side and a distal side; a first lumen passing through the transverse wall portion and terminating in a distal end, the first lumen defining a port on the proximal side of the transverse wall portion; a vial-engaging element extending distally from the transverse wall portion and configured for removably attaching the cap adapter to the vial with the distal side of the transverse wall portion facing the sealing stopper; a spike extending distally from the wall portion, the spike defining a second lumen passing through the wall portion, the second lumen being spaced from and not in fluid communication with the first lumen, the spike being configured to pierce the sealing stopper; a shield extending proximally from the port and configured so as to provide a guide for the insertion of a hypodermic needle into the port; and a secondary sealing member abutting the distal side of the transverse wall portion and sealing the distal end of the first lumen.