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US 6,627,160 B2Granted
Multiple channel pipetting device
AssigneeBrand GmbH + Co KG
InventorJurgen Wanner
Life of this patent
Estimating the term…
Abstract
A multiple channel pipetting device and pipette shaft, in which each pipette shaft has a circumferential seal receptacle inside, at its upper end in which the circumferential plunger seal is positioned and in which the circumferential plunger seal, at least in the case of a pulled back pipette plunger, definitely remains in the seal receptacle when the pipetted shaft is removed from the shaft carrier.
Claims28
Multiple channel pipetting device, comprising:
- a housing with a transversely arranged shaft carrier and a moveable plunger carrier arranged transversely above the shaft carrier;
- a number of plunger receptacles in the shaft carrier and a corresponding number of pipette plungers positioned on the plunger carrier and inserted in the plunger receptacles;
- a number of shaft receptacles corresponding to the number of plunger receptacles, said shaft receptacles being inserted in the shaft carrier on an opposite side from the plunger carrier and extending from the plunger receptacles;
- and
- a number of pipette shafts corresponding to the number of shaft receptacles and removably inserted in the shaft receptacles;
- wherein each pipette shaft has a cylinder adapted for the pipette plunger and a tip holder on a lower end with an ejection channel arranged therein;
- wherein an outer side of an upper end of each cylinder is adapted for attachment in a respective shaft receptacle;
- wherein a pipette tip is received on each tip holder;
- and
- wherein each pipette plunger has a circumferential plunger seal which is positioned in a respective circumferential seal receptacle of an inner upper end of each pipette shaft;
- and
- wherein the circumferential plunger seal is mounted so as to remain in the seal receptacle, at least in the case of a pulled back pipette plunger, when the pipette shaft is removed from the shaft carrier.
9 more elements
Pipette shaft unit for a pipetting device, comprising,
- a pipette shaft;
- a cylinder adapted to receive a pipette plunger;
- and
- a tip holder on a lower end of the cylinder with an ejection channel arranged therein;
- wherein an outer side of an upper end of the cylinder is adapted for attachment in a shaft receptacle;
- wherein the tip holder is adapted to receive a pipette tip thereon by pushing;
- wherein a circumferential seal receptacle is arranged at an inner side of the upper end of the cylinder;
- and
- wherein a circumferential plunger seal for the pipette plunger is positioned in said seal receptacle.
6 more elements
Dependencies are inferred from the claim text.