초록 ▼

A blood collection device is provided with a phase partitioning device which includes a standpipe connected to a reservoir filled with a sealant material having a specific gravity intermediate the specific gravities of separated light and heavy phases of blood. Components of the heavy phase of blood

A blood collection device is provided with a phase partitioning device which includes a standpipe connected to a reservoir filled with a sealant material having a specific gravity intermediate the specific gravities of separated light and heavy phases of blood. Components of the heavy phase of blood enter the reservoir during phase separation and centrifugation to force sealant upwardly in the standpipe and out into the tube above the line of separation.

대표청구항 ▼

A method of separating whole blood into its lower density and higher density phases and providing a partition between the separated phases comprising the steps of utilizing a glass blood collection container having a chamber in the lower end portion of the container and which contains a thixotropic

A method of separating whole blood into its lower density and higher density phases and providing a partition between the separated phases comprising the steps of utilizing a glass blood collection container having a chamber in the lower end portion of the container and which contains a thixotropic gel-like sealant material having a specific gravity between those of the lower and higher density phases, the container having an upper end closed by a stopper and a closed, integral, glass bottom end, said chamber having a standpipe connected thereto and in communication with the sealant and having an outlet spaced from the chamber and disposed in that portion of the container that is above the upper level of the higher density phase when separated from the lower density phase, said chamber and initially the sealant material therein being at the bottom end of the container closer to the bottom end than to the upper end of the container and in fluid communication with the lower end portion of the container before centrifugation, introducing whole blood into the container through a needle piercing the stopper, centrifuging the container with the blood therein so that the higher density phase separates to the lower end portion of the container and simultaneously urges sealant from the chamber upwardly through the standpipe and through the outlet into the container and then downwardly from the outlet to form a partition, maintaining the chamber and standpipe stationary with respect to the container during phase separation and centrifugation, and continuing centrifugation of the container at least until the phases are completely separated and the sealant provides a partition between the separated phases.