| abstract |
Methods and devices according to which body fluids, such as blood, are collected in the interior of the body in a cavity thereof with the fluid which is collected being directed to a fluid receiving location through a path of a given degree of restriction for controlling the characteristics of the collected fluid. Thus, it is possible to direct a fluid such as blood to the interior of a container through a suitable filter or sponges of different degree of coarseness can be arranged with one surrounding the next with each inner sponge having cells smaller than the next outer sponge. Also it is possible to utilize receptacles communicating through capillary tubes of predetermined diameters with the fluid. A suitable preservative for the body fluid is situated in the container. |