Method for removing a fluid substance from a closed system
First Claim
1. A method for removing a fluid substance from a closed system comprising a cap fixed to a vessel in sealing engagement, the method comprising the steps of:
- (a) penetrating first and second frangible seals affixed to the cap with a fluid transfer device so that air passageways are formed between the fluid transfer device and the affixed seals, wherein the second seal is axially aligned with and positioned below the first seal in a spaced-apart relationship, and wherein each of the seals comprises a foil; and
(b) removing the fluid substance from the system with the fluid transfer device.
6 Assignments
0 Petitions
Accused Products
Abstract
A cap which can form an essentially leak-proof seal with an open-ended vessel capable of receiving and holding fluid specimens or other materials for analysis. To minimize potentially contaminating contact between a fluid sample present in the vessel and humans or the environment, the present invention features a cap having a frangible seal which is penetrable by a plastic pipette tip or other fluid transfer device. The cap further includes a filter for limiting dissemination of an aerosol or bubbles once the frangible seal has been pierced. The filter is positioned between the frangible seal and a retaining structure. The retaining structure is positioned on the cap above the filter and may be used to contain the filter within the cap. The material of the retaining structure may be penetrable by a fluid transfer device.
-
Citations
15 Claims
-
1. A method for removing a fluid substance from a closed system comprising a cap fixed to a vessel in sealing engagement, the method comprising the steps of:
-
(a) penetrating first and second frangible seals affixed to the cap with a fluid transfer device so that air passageways are formed between the fluid transfer device and the affixed seals, wherein the second seal is axially aligned with and positioned below the first seal in a spaced-apart relationship, and wherein each of the seals comprises a foil; and (b) removing the fluid substance from the system with the fluid transfer device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification