Pipettor and externally sealed pipette tip
First Claim
1. A pipettor for pipetting fluids, comprising:
- a pipette block defining a first pipette block hole having an open end and a closed end;
a pipette tip slidably engaging said pipette block through said first pipette block hole, said pipette tip defining a first circumscribing groove proximate an open end of said pipette tip; and
a first seal seated in said first circumscribing groove, said first seal providing a sliding seal between said pipette tip and said pipette block;
whereby said pipette tip may travel into and out of said first pipette block hole to control fluid flow into and out of said pipette tip without fluid travel between said pipette block and said pipette tip due to said first seal.
3 Assignments
0 Petitions
Accused Products
Abstract
A pipettor uses no pistons in order to provide highly automated, precise and accurate pipetting operations. Additionally, a self-aligning pipette tip enables better engagement of such pipette tips by the pipettor. The pipette tips may be automatically engaged and locked into place by the pipettor and may be automatically disengaged to enable highly-automated pipetting processes for industrial and laboratory purposes. Open proximal ends of the pipette tips are engaged by a pipette block, which then forms a temporary seal with the individual pipette tips. Displacement of the pipette block with respect to the pipette tips increased or decreases the effective volume of the pipette tip allowing it to aspirate or expel fluids in a precise, accurate, and predictable way. Additionally, seals may be seated in grooves engraved in either the pipette tip or the pipette block to provide a sliding seal between the pipette block and pipette tip.
16 Citations
8 Claims
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1. A pipettor for pipetting fluids, comprising:
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a pipette block defining a first pipette block hole having an open end and a closed end;
a pipette tip slidably engaging said pipette block through said first pipette block hole, said pipette tip defining a first circumscribing groove proximate an open end of said pipette tip; and
a first seal seated in said first circumscribing groove, said first seal providing a sliding seal between said pipette tip and said pipette block;
wherebysaid pipette tip may travel into and out of said first pipette block hole to control fluid flow into and out of said pipette tip without fluid travel between said pipette block and said pipette tip due to said first seal. - View Dependent Claims (2, 4)
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3. A pipettor for pipetting fluids, comprising:
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a pipette block defining a first pipette block hole having an open end and a closed end, said pipette block defining a first circumscribing groove proximate said open hole end;
a pipette tip slidably engaging said pipette block through said first pipette block hole; and
a first seal seated in said first circumscribing groove, said first seal providing a sliding seal between said pipette tip and said pipette block;
wherebysaid pipette tip may travel into and out of said first pipette block hole to control fluid flow into and out of said pipette tip without fluid travel between said pipette block and said pipette tip due to said first seal.
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5. A pipette tip for use in a pipette block having a closed-end hole, comprising:
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an open proximal end defining a first circumscribing groove; and
a seal seated in said first circumscribing groove;
wherebythe pipette tip may be used in conjunction with the pipette block with the pipette tip travelling into and out of the closed-end hole to control fluid flow into and out of the pipette tip without fluid travel between the pipette block and the pipette tip due to said first seal. - View Dependent Claims (6)
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7. A pipette block for use in conjunction with a pipette tip, comprising:
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the pipette block defining a closed-end hole and defining a first circumscribing groove proximate an open end of said closed-end hole; and
a seal seated in said first circumscribing groove;
wherebythe pipette tip may be used in conjunction with the pipette block with the pipette tip travelling into and out of the closed-end hole to control fluid flow into and out of the pipette tip without fluid travel between the pipette block and the pipette tip due to said first seal. - View Dependent Claims (8)
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Specification