US 7,513,895 B2
Vial adaptor for regulating pressure
Thomas F. Fangrow, Mission Viejo, Calif. (US)
Assigned to ICU Medical, Inc., San Clemente, Calif. (US)
Filed on May 02, 2006, as Appl. No. 11/415,553.
Claims priority of provisional application 60/791364, filed on Apr. 12, 2006.
Prior Publication US 2007/0244457 A1, Oct. 18, 2007
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/36 (2006.01)
U.S. Cl. 604—414  [604/411; 604/415] 19 Claims
OG exemplary drawing
 
1. A pressure regulating vial adaptor comprising:
a piercing member configured to be inserted through a cap of a vial, the piercing member comprising a tip and a sheath having an opening therein; and
a balloon at least partially housed within the sheath, wherein at least a portion of the balloon is configured to expand outside of the sheath, when fluid is withdrawn from the vial through the opening, and the balloon is configured to cause the tip to separate from the sheath.