Bioassay plate washer having concentric aspirate and wash needles
First Claim
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1. A bioassay plate washer, comprising:
- (a) a housing;
(b) a first wash assembly disposed in said housing;
(c) said first wash assembly including wash and aspirate manifolds having defined therein, respectively, a wash liquid chamber and a vacuum chamber;
(d) a plurality of wash needles for communication between said wash liquid chamber and a first point below said first wash assembly;
(e) a plurality of aspirate needles for communication between said vacuum chamber and a second point below said first point;
(f) each one said plurality of aspirate needles being disposed internally of each one of said wash needles; and
(g) distal ends of said plurality of wash needles at said first point are downwardly flared.
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Abstract
In a preferred embodiment, a bioassay plate washer, including: a housing; a first wash assembly disposed in the housing; the first wash assembly including wash and aspirate manifolds having defined therein, respectively, a wash liquid chamber and a vacuum chamber; a plurality of wash needles for communication between the wash liquid chamber and a first point below the first wash assembly; a plurality of aspirate needles for communication between the vacuum chamber and a second point below the first point; and each one of the plurality of aspirate needles being disposed internally of each one of the wash needles.
31 Citations
6 Claims
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1. A bioassay plate washer, comprising:
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(a) a housing; (b) a first wash assembly disposed in said housing; (c) said first wash assembly including wash and aspirate manifolds having defined therein, respectively, a wash liquid chamber and a vacuum chamber; (d) a plurality of wash needles for communication between said wash liquid chamber and a first point below said first wash assembly; (e) a plurality of aspirate needles for communication between said vacuum chamber and a second point below said first point; (f) each one said plurality of aspirate needles being disposed internally of each one of said wash needles; and (g) distal ends of said plurality of wash needles at said first point are downwardly flared. - View Dependent Claims (2, 3, 4, 5)
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6. A bioassay plate washer, comprising:
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(a) a housing; (b) a first wash assembly disposed in said housing, said wash assembly including a plurality of wash needles and a plurality of aspirate needles disposed therein in a first matrix; (c) means to transport a bioassay plate into washing relationship with said wash assembly; and (d) said first wash assembly being removable from said housing and replaceable with a second wash assembly having a plurality of wash needles and a plurality of aspirate needles disposed therein in a second matrix, wherein said second matrix being different from said first matrix.
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Specification