Vial adaptor and fluid transfer system

• Main Author: Lee, Freddie Eng Hwee
• Format: Patent
• Language: English
• Published: 14.12.2021
• Subjects: BABY COMFORTERS; CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICALPURPOSES; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; DEVICES FOR RECEIVING SPITTLE; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGINGPHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL ORADMINISTERING FORMS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

A vial adaptor comprises first and second housings coupled to each other, a sheath enclosing the first and second housings, and a spike disposed in the first and second housings. The first and second housings form a first chamber therein. The sheath and the first and second housings form therebetween a second chamber in air communication with the first chamber. The second housing is slidable relative to the first housing to cause the spike piercing through a front stopper to establish air and fluid communication with a vial attached to the vial adaptor, meanwhile to vary the volume of the first chamber and press the air into the second chamber. Upon a fluid being drawn from the vial, the air in the first and second chambers enters the vial to compensate the pressure reduction caused by the fluid drawn out to prevent fluid spillage or aerosolizing from the vial.