Immunobead aspirator and method of use

Details Immunobead aspirator and method of use Immunobead aspirator and method of use

1990-02-13

1993-02-09

Warden, Robert J.

Chemistry: analytical and immunological testing

Including sample preparation

Volumetric liquid transfer

422 99, 422100, 435287, G01N 114

Patent

active

051852691

ABSTRACT:
The immunobead aspirator reduces the amount of carry over liquid which remains within a test tube or other immunoassay vessel after an aspiration procedure. When the immunobead aspirator lifts up the immunobead during the aspiration procedure, the immunobead contacts an array of protuberances within an inverted bowl from which a vacuum is drawn. The array of protuberances define a hollow which exceeds the size of the immunobead. Accordingly, at any given time, the immunobead makes limited contact with only a portion of the protuberances. This reduces the amount of liquid which is trapped within points of contact between the lifted immunobead and the aspiration device and reduces the amount of carry over liquid.

REFERENCES:
patent: 4053284 (1977-10-01), Posch
patent: 4200613 (1980-04-01), Alfrey et al.
patent: 4383041 (1983-05-01), Kutsusawa et al.
patent: 4681742 (1987-07-01), Johnson et al.
patent: 4754771 (1988-07-01), Tangherlini et al.
patent: 4803050 (1989-02-01), Mack
patent: 4816408 (1989-03-01), Suzuki et al.
patent: 4913179 (1990-04-01), Engel et al.

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