Stoppers, stopper and fluid tube assemblies, and container assemblies formed therewith

A stopper, comprising:

• a head part and a stopper part;
• the head part includes an upper end, a lower end, and an outer surface, the head part, including the outer surface of the head part, extend downwardly from the upper end of the head part to the lower end of the head part;
• and
• the stopper part includes an upper end, a lower end, an outer surface, and flanges, the stopper part, including the outer surface of the stopper part, extend downwardly from the upper end of the stopper part connected to the lower end of the head part to the lower end of the stopper part, each said flange radiates outwardly from the outer surface of the stopper part to an outer periphery that defines an outer diameter, the flanges are spaced apart from proximate to the upper end of the stopper part to proximate to the lower end of the stopper part, and the outer diameters of the flanges are different from one another and increase from an innermost one of the flanges proximate to the upper end of the stopper part to a lowermost one of the flanges proximate to the lower end of the stopper part.

A stopper and fluid tube assembly, comprising:

• a fluid tube includes a continuous sidewall having an inner surface that defines a fluid transfer path, an outer surface, a proximal end that forms an outlet, and an opposing distal end that forms an inlet, the outlet and the inlet enable fluid to be drawn through the fluid transfer path from the distal end to the proximal end;
• a stopper, the stopper includes a head part and a stopper part;
• the head part includes an upper end, a lower end, an outer surface, and an inner surface, the head part, including the outer surface of the head part and the inner surface of the head part, extend downwardly from the upper end of the head part to the lower end of the head part;
• the stopper part includes an upper end, a lower end, an outer surface, an inner surface, and flanges, the stopper part, including the outer surface of the stopper part and the inner surface of the stopper part, extend downwardly from the upper end of the stopper part connected to the lower end of the head part to the lower end of the stopper part, each said flange radiates outwardly from the outer surface of the stopper part to an outer periphery that defines an outer diameter, the flanges are spaced apart from proximate to the upper end of the stopper part to proximate to the lower end of the stopper part, and the outer diameters of the flanges are different from one another and increase from an innermost one of the flanges proximate to the upper end of the stopper part to a lowermost one of the flanges proximate to the lower end of the stopper part;
• the upper end of the head part defines an upper opening of the head part;
• the lower end of the stopper part defines a lower opening of the stopper part;
• the inner surface of the head part and the inner surface of the stopper part define a channel, the channel extends from the lower opening of the stopper part to the upper opening of the head part;
• and
• the fluid tube extends upright from the distal end to the proximal end through the channel of the stopper, the inner surface of the stopper part between head part and the lower end of the stopper part frictionally engages the outer surface of the fluid tube between the lower end of the stopper part and the head part frictionally retaining and sealing the fluid tube to the stopper, and the fluid tube enables fluid contents to be withdrawn from the volume of the container via the fluid transfer path from the inlet of the fluid tube to the outlet of the fluid tube.