Abstract: A tray for holding a plurality of blood collection tubes is disclosed. The tray includes a deck portion, a sidewall portion disposed about at least a portion of a perimeter of the deck portion, a first well defined within the deck portion and a second well defined within the deck portion, with each well configured to receive a blood collection tube therein. Each well defines an aperture therein and the tray includes at least one structural rib interconnecting the first well and the second well without extending into an aperture of the first well or the second well. The tray may include a plurality of wells, each well defining an aperture therein, and a plurality of structural ribs, each structural rib interconnecting at least a portion of the plurality of wells without extending into an aperture of any of the wells.

Abstract: A separator for use in a container for a biological fluid is disclosed. The separator includes a separator body having a first region at least partially made of a first material having a first density, and a second region at least partially made of a second material having a second density different from the first density. The separator has an overall density intermediate the densities of a first phase and a second phase of the biological fluid. At least a portion of the separator is deformable between a first condition in which the biological fluid can pass between an inner surface of the container and the separator, and a second condition in which at least a portion of the separator prevents the biological fluid from passing between the inner surface of the container and the separator.

Abstract: A multilayer evacuated blood collection tube is provided having a first tube layer, and a second tube layer formed on the first tube layer and a closure, the second tube layer being a nanocomposite barrier layer. Such containers include but are not limited to blood collection tubes, evacuated blood collection tubes, centrifuge tubes, culture bottles, and syringe barrels.

Abstract: A separator for use in a container for a biological fluid is disclosed. The separator includes a separator body having a first region at least partially made of a first material having a first density, and a second region at least partially made of a second material having a second density different from the first density. The separator has an overall density intermediate the densities of a first phase and a second phase of the biological fluid. At least a portion of the separator is deformable between a first condition in which the biological fluid can pass between an inner surface of the container and the separator, and a second condition in which at least a portion of the separator prevents the biological fluid from passing between the inner surface of the container and the separator.

Abstract: A tray for holding a plurality of blood collection tubes is disclosed. The tray includes a deck portion, a sidewall portion disposed about at least a portion of a perimeter of the deck portion, a first well defined within the deck portion and a second well defined within the deck portion, with each well configured to receive a blood collection tube therein. Each well defines an aperture therein and the tray includes at least one structural rib interconnecting the first well and the second well without extending into an aperture of the first well or the second well. The tray may include a plurality of wells, each well defining an aperture therein, and a plurality of structural ribs, each structural rib interconnecting at least a portion of the plurality of wells without extending into an aperture of any of the wells.

Abstract: A separator for use in a container for a biological fluid is disclosed. The separator includes a separator body having a first region at least partially made of a first material having a first density, and a second region at least partially made of a second material having a second density different from the first density. The separator has an overall density intermediate the densities of a first phase and a second phase of the biological fluid. At least a portion of the separator is deformable between a first condition in which the biological fluid can pass between an inner surface of the container and the separator, and a second condition in which at least a portion of the separator prevents the biological fluid from passing between the inner surface of the container and the separator.

Abstract: A separator for use in a container for a biological fluid is disclosed. The separator includes a separator body having a first region at least partially made of a first material having a first density, and a second region at least partially made of a second material having a second density different from the first density. The separator has an overall density intermediate the densities of a first phase and a second phase of the biological fluid. At least a portion of the separator is deformable between a first condition in which the biological fluid can pass between an inner surface of the container and the separator, and a second condition in which at least a portion of the separator prevents the biological fluid from passing between the inner surface of the container and the separator.

Abstract: A device for separating heavier and lighter fractions of a fluid sample is provided, the device including a container and a unitary separator located therein, the separator having an overall density between the heavier and light fractions. The separator is capable of moving between the fractions upon centrifugation, and sealing the fractions from one another when centrifugation ends.

Abstract: A device for separating heavier and lighter fractions of a fluid sample is provided, the device including a container and a unitary separator located therein, the separator having an overall density between the heavier and light fractions. The separator is capable of moving between the fractions upon centrifugation, and sealing the fractions from one another when centrifugation ends.

Abstract: A multilayer evacuated blood collection tube is provided having a first tube layer, and a second tube layer formed on the first tube layer and a closure, the second tube layer being a nanocomposite barrier layer. Such containers include but are not limited to blood collection tubes, evacuated blood collection tubes, centrifuge tubes, culture bottles, and syringe barrels.

Abstract: A device for separating heavier and lighter fractions of a fluid sample is provided, the device including a container and a unitary separator located therein, the separator having an overall density between the heavier and light fractions. The separator is capable of moving between the fractions upon centrifugation, and sealing the fractions from one another when centrifugation ends.

Abstract: A co-injection process is provided for fabricating improved multi-layer containers, including but not limited to blood collection tubes, evacuated blood collection tubes, culture bottles, centrifuges tubes, and syringe barrels. The container includes a tube (10) having a bottom wall (12) and a side wall (14) with an open end (18). The container can be provided with a stopper having an upper portion (22) and a skirt with an outside portion (30), a well (34) and a cavity (36). The tube and stopper assembly can be used for medical purposes including containing a blood sample within an enclosed interior space (40).

Abstract: A multilayer evacuated blood collection tube is provided having a first tube layer, and a second tube layer formed on the first tube layer and a closure, the second tube layer being a nanocomposite barrier layer. Such containers include but are not limited to blood collection tubes, evacuated blood collection tubes, centrifuge tubes, culture bottles, and syringe barrels.

Abstract: A device for separating heavier and lighter fractions of a fluid sample is provided, the device including a container and a unitary separator located therein, the separator having an overall density between the heavier and light fractions. The separator is capable of moving between the fractions upon centrifugation, and sealing the fractions from one another when centrifugation ends.