MICHAEL BENNETT PRYSTOWSKY
Medical Practice in Harrison, NY

6120733, Sep 19, 2000

Nov 12, 1997

8/969176

David B. P. Goodman - Wynnewood PA
Michael B. Prystowsky - Harrison NY

G01N 3348

422 61

The present invention relates to a self-contained assay device which is capable of detecting various analyte(s), including bioanalytes, in specimens for example, from biological sources. The assay device includes a first housing and a specimen holder rotatably fit in the first housing. The specimen holder has a center portion, a circular flange surrounding the center portion and a pin member extending from the underneath of the center portion. The center portion has a radial slot extending from its peripheral end toward a closed end. A spring/latch assembly is adapted to be held in the slot on the specimen holder and includes a spring member disposed in the slot near its closed end, a latch member having a remote end and a plurality of plunger members. The assay device also includes a second housing, preferably a cam-plate fixedly fit in the first housing. The cam-plate has a rim portion surrounding a concave portion adapted to accommodate the center portion of the specimen holder and an opening on the rim portion for adding a specimen to be tested.

5817522, Oct 6, 1998

Nov 12, 1997

8/969177

David B. P. Goodman - Wynnewood PA
Michael B. Prystowsky - Harrison NY

G01N 2101, G01N 3348

436165

The assay device includes a first housing and a specimen holder rotatably fit in the first housing. The specimen holder has a center portion, a circular flange surrounding the center portion and a pin member extending from the underneath of the center portion. The center portion has a radial slot extending from its peripheral toward its center. A spring/latch assembly is adapted to be held in the slot on the specimen holder and includes a spring member disposed near the center of the center portion and a latch member having a remote end. The assay device also includes a second housing, preferably a cam plate fixedly fit in the first housing. The cam plate has a rim portion surrounding a concave portion adapted to accommodate the center portion of the specimen holder and an opening on the rim portion for adding a specimen to be tested. A plurality of cam-shaped chambers are provided in the rim portion and communicate with the concave portion. Each cam-shaped chamber has an apex portion located furthest away from the concave portion and a cam side extending from the apex portion toward the next chamber and each chamber has a capsule, retained therein, containing either a reagent or wash solution.