Penetrable cap
DCFirst Claim
1. A penetrable cap comprising:
- closed side wall;
a ledge extending radially inwardly from the side wall of the cap and having an end surface which defines an opening sized to receive a fluid transfer device therethrough;
a frangible seal for providing a fluid barrier, the frangible seal being affixed to a surface of the ledge and covering the opening; and
a filter for impeding or preventing the passage an aerosol or bubbles through the cap, the filter being positioned above the frangible seal and contained substantially within the cap.
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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 cap has 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 retainer. The retainer is positioned on the cap above the filter and may be used to contain the filter within the cap. The material of the retainer may be penetrable by a fluid transfer device.
147 Citations
88 Claims
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1. A penetrable cap comprising:
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closed side wall;
a ledge extending radially inwardly from the side wall of the cap and having an end surface which defines an opening sized to receive a fluid transfer device therethrough;
a frangible seal for providing a fluid barrier, the frangible seal being affixed to a surface of the ledge and covering the opening; and
a filter for impeding or preventing the passage an aerosol or bubbles through the cap, the filter being positioned above the frangible seal and contained substantially within the cap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A penetrable cap comprising:
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a generally cylindrical side wall;
a generally cylindrical skirt inside of and structurally interrelated to die side wall, the skirt defining an opening dimensioned to receive a fluid transfer device therethrough;
a frangible seal for providing a fluid barrier, the frangible seal being affixed to the cap and covering the opening in the skirt; and
a filter fix impeding or preventing the passage of an aerosol or bubbles through the cap, the filter being positioned above the frangible seal and contained substantially within the cap. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A penetrable cap comprising:
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a closed side wall;
a ledge extending radially inwardly from the side wall and having an end surface which defines an opening, wherein the side wall above the ledge defines a first bore;
a skirt depending from the ledge and circumscribing the opening, wherein the skirt defines a second bore having a diameter or width smaller than that of the first bore, wherein the second bore is sized to receive a fluid transfer device therethrough;
a first frangible seal for providing a fluid barrier, the first frangible seal being affixed to a top surface of the ledge or to a bottom surface of the skirt;
a filter for impeding or preventing the passage of an aerosol or bubbles through the cap, the filter being positioned above the first frangible seal and contained substantially within the first bore; and
a retainer for containing the filter within the cap. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88)
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- 67. The cap of claim 67, wherein the second seal is a frangible seal.
Specification