Patent ID: 11890619
Assignee: INTEGRA BIOSCIENCES AG
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 3:
4. A pipetting container comprising:
a receptacle for holding liquid reagents or samples for pipetting, the receptacle having a bottom wall, and at least one grouping of interconnected anti-vacuum channels on an upper surface of the bottom wall and exposed upwardly into the receptacle in which liquid sample or liquid reagent is held for pipetting; wherein
the upper surface of the bottom wall of the receptacle is hydrophilic;
the container is a laboratory tube having a cylindrical sidewall and a single grouping of interconnected anti-vacuum channels on the upper surface of the bottom wall;
at least a portion of the upper surface of the bottom wall is flat, and the portion of the upper surface of the bottom wall with the single grouping of interconnected anti-vacuum channels is flat except for the interconnected anti-vacuum channels;
the single grouping of interconnected anti-vacuum channels on the bottom wall contains a first pair of perpendicular and intersecting channels with the intersection of the channels defining a center point for the grouping, a second pair of perpendicular channels rotated 45° from the first pair, said second pair of channels being aligned to intersect at said center point but interrupted in the vicinity of the center point, and at least one circular channel that intersects each of the channels of the first and second pair of perpendicular and intersecting channels;
the at least one circular channel comprises an inner circular channel and an outer circular channel and each of the inner and the outer circular channels intersects each of the channels of the first and second pair of perpendicular and intersecting channels; and
the pipetting container further comprises additional channels extending from the inner circular channel through the outer circular channel.