Device for sample pickup and washing

Details Device for sample pickup and washing Device for sample pickup and washing

1981-03-02

1982-08-10

Serwin, Ronald E.

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Sample mechanical transport means in or for automated...

7386421, 422 64, 422100, G01N 112, G01N 114

Patent

active

043437664

ABSTRACT:
The invention concerns a device for picking up liquid samples to be analyzed, especially in automatic samplers, said device comprising a needle connected to a sucking pump and supported by a support which moves said needle downwards to pick up the sample from a vial containing same and upwards from said vial. In order to perform a washing step after one aspiration and before the subsequent one, the needle support is designed to perform an oscillating movement when the support is in its upward position with respect to the vial. The oscillating movement is performed by the cooperation of cam means and a control rod having at least a pivot axis controlling the alternative movements. The oscillating movement makes the needle plunge into a sidewardly positioned trough containing a washing liquid.

REFERENCES:
patent: 3081158 (1963-03-01), Winter
patent: 3858450 (1975-01-01), Jones
patent: 3915651 (1975-10-01), Nishi
patent: 4228831 (1980-10-01), Kerns
patent: 4235840 (1980-11-01), Mendoza et al.
patent: 4276260 (1981-06-01), Drbal et al.

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