System for automatically testing a fluid specimen
View Patent ↗A system for automatically testing a fluid specimen, e.g., urine, to indicate the presence of specified chemical components in the specimen. The system preferably utilizes an assaying device comprised of a collection cup and a cap which carries at least one test strip. The device includes an integrated aliquot delivery mechanism actuatable to wet the test strip with an aliquot delivered from the fluid specimen. The assaying device is configured to operate in conjunction with an electronic reader device capable of actuating the aliquot delivery mechanism and reading the reaction of the test strip. A preferred reader device defines a keyed receptacle for accommodating a complementary shaped cup housing in a particular orientation. The reader device is comprised of a camera for capturing the image of a test strip, an actuator for actuating an aliquot delivery mechanism, and a microprocessor/controller for (1) controlling the camera and actuator and (2) processing the image.
1. An apparatus comprising:
an assaying device reader comprising a housing and a camera, said housing including a base portion and a head portion; and
an assaying device comprising a cup and a test strip, said cup be operable to hold a fluid specimen, said test strip being operable to provide a visual indication of at least one property of the fluid specimen,
said base portion directly contacting said assaying device and maintaining said assaying device in a substantially fixed position relative to said camera,
said camera being coupled to said head portion and operable to acquire an image of said test strip,
said device reader further including a shiftable piston configured to shift into and out of engagement with said assaying device.
2. The apparatus of claim 1 , one of said base portion and said cup defining a recess,
the other of said base portion and said cup presenting a projection,
said recess receiving said projection in a substantially complemental fashion to thereby inhibit relative lateral movement between the cup and the base portions.
3. The apparatus of claim 2 , said recess and said projection cooperating to maintain said cup in a predetermined orientation relative to the camera.
4. The apparatus of claim 2 , said recess and said projection having a substantially similar, non-circular shape.
5. The apparatus of claim 1 , said device reader further including at least one light source for illuminating said test strip.
6. The combination of claim 1 , said device reader further including a light shield movably mounted in said head portion for movement toward said assaying device to minimize stray light on said test strip.