Pipetting device
AssigneeSiemens Healthcare Diagnostics Products GmbH
InventorHugo Wilmes
Life of this patent
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Abstract
The invention relates to a pipetting device (1) for an automatic analysis appliance, wherein the pipetting device (1) comprises a pipetting needle (2) with a longitudinal axis (3), and a device (4) for moving the pipetting needle (2). The pipetting device (1) further comprises a holder (5) for the pipetting needle (2), which holder (5) is mounted on the movable device (4) and to which holder the pipetting needle (2) is releasably connected, and a vibration generator which can set at least the tip of the pipetting needle (2) in vibration, wherein the vibration generator is mounted on the movable device (4).
Claims20
A pipetting device for an automatic analysis appliance, the pipetting device comprising:
- a pipetting needle for the pipetting of liquids, the pipetting needle comprising a first connection element, the first connection element having a recess and a first resetting element;
- a holder;
- and
- a vibration generator mounted to an upper portion of the holder, the vibration generator comprising a motor, a ball bearing housing, and a rotating shaft extending from the ball bearing housing;
- wherein:
- the pipetting needle is releasably positioned on a lower portion of the holder such that an end of the rotating shaft extending from the ball bearing housing is configured to enters the recess, the ball bearing housing directly contacts an edge of the recess, and the first resetting element is configured to exerts a force to hold the first connection element in place with respect to the vibration generator.
A pipetting device for an automatic analysis appliance, the pipetting device comprising:
- a pipetting needle for the pipetting of liquids, the pipetting needle comprising a first securing element;
- a holder comprising a second securing element and a second resetting element;
- and
- a vibration generator mounted to an upper portion of the holder, the vibration generator comprising a rotating shaft;
- wherein:
- the pipetting needle is releasably positioned on a lower portion of the holder such that the first securing element is seated in the second securing element and the second resetting element is configured to exerts a force to hold the first securing element in the second securing element, such that the first securing element rests on the second securing element.
A method of operating a pipetting device for an automatic analysis appliance, the method comprising:
- providing a pipetting needle for the pipetting of liquids, the pipetting needle comprising a first securing element and a first connection element, the first connection element having a recess;
- providing a holder comprising a second securing element, a resetting element, and a vibration generator mounted to an upper portion of the holder, the vibration generator comprising a ball bearing housing and a rotating shaft extending from the ball bearing housing;
- inserting the pipetting needle into the holder such that an end of the rotating shaft extending from the ball bearing housing enters the recess and the ball bearing housing directly contacts an edge of the recess;
- and
- seating the first securing element in the second securing element such that the resetting element exerts a force to hold the first securing element in the second securing element.
Dependencies are inferred from the claim text.