Fluid-specimen collecting and testing device and method for recording chromatographic assay test results

Abstract

A fluid specimen testing device having a removable lid which carries at least one testing strip behind a transparent top viewing window. Testing is initiated by tilting the device into a stable sideways orientation to allow the specimen to contact the sampling pad portion of the strip. The device is adapted to provide stability in the upright, tilted and inverted orientations. A roll-inhibiting feature also acts as an indicator for proper roll positioning in the tilted configuration. The strips are also oriented in the lid so that they are substantially vertical when the device is in the tilted position thereby enhancing a condition for proper capillarity. The strip is carried close to the upper surface which allows it to be copied on a flat glass copier providing for more objective recordation of the test results.

Description

PRIOR APPLICATION [0001] This is a continuation of U.S. patent application Ser. No. 09 / 862,235 filed May 21, 2001 hereby incorporated by reference.FIELD OF THE INVENTION [0002] This invention relates generally to fluid specimen containers, testing devices for conducting chromatographic reaction tests using assay testing strips for fluid specimens and more particularly to sealed receptacles for holding fluid specimens having testing capability. BACKGROUND OF THE INVENTION [0003] Fluid specimen jars or cups are commonly used to collect and test fluid specimens for the presence or absence of specific “indicators,” which show the presence of specific chemicals, hormones, antibodies or antigens and are most commonly used for drug and pregnancy testing, among other types of assay tests. [0004] Collecting and testing fluid specimens carries a measure of health risk for the person conducting the test and contamination risk to the specimen or testing media. Testing devices have previously re...

AI Technical Summary

Benefits of technology

[0015] The principal and secondary objects of this invention are to provide a cost-effective fluid specimen testing device that can provide reliable results by preventing premature testing of the fluid specimen and proper testing by complete and continuous submersion of the testing strips' sampling pads, and that can be easily used; and one in which results are recorded more objectively.

[0016] These and other valuable objects are achieved by a fluid specimen testing device having a removable lid, into which is mounted a testing strip behind a transparent top viewing window. Testing is initiated by tilting the device into a stable sideways orientation to allow the specimen to contact the sampling pad portion of the strip. The device is adapted to provide stability in the upright, tilted and inverted orientations. A roll-inhibiting feature also acts as an indicator for proper roll orientation in the tilted position. The strips are also oriented in the lid so that they are substantially vertical when the device is in the tilted position thereby enhancing a condition for proper capillarity. The strip is carried close to the lid's upper surface which allows it to be copied on a flat glass copier providing for more objective recordation of the test results. A specially adapted cavity allows enhanced uniformity in contact between multiple sampling pads and the specimen and discourages bubble formation and retention.

Problems solved by technology

Collecting and testing fluid specimens carries a measure of health risk for the person conducting the test and contamination risk to the specimen or testing media.

However, such devices are limited in that only a pre-determined amount of specimen can be tested.

There can also be the difficulty of locating a proper place for discarding of the excess specimen.

Also, if the maximum fluid level is exceeded, test results will not be reliable as the testing process may be adversely affected if the sample contacts the test strip higher than the sampling pad's limit line.

Often, medical device manufacturers, do not make products geared for use by the lay person, unless so targeted.

U.S. Pat. No. 5,403,551 to Galloway, requires inversion to an unspecified angle, making gauging adequate submersion of the test strips difficult and uncertain.

Since capillary action can be adversely affected by trapped air, and the position and orientation of the test strips.

In these devices, proper subjection of the test strip sampling pad to the specimen therefore requires a skill which may be beyond that of an inexperienced technician, resulting in unreliable and often inaccurate results.

The splash-shield can also interfere with the submersion of the testing strip by trapping air-bubbles.

However, since testing materials are typically disposable, this can be costly.

Testing devices are costly due to materials and difficulty in manufacturing, and are therefore not practical for use by certain organizations or institutions having limited resources.

Examples of complicated and thus costly testing devices are demonstrated by U.S. Pat. No. 5,403,551 to Galloway, et al and U.S. Pat. No. 5,976,895 to Cipkowski, both of which require multiple components, increasing materials and manufacturing cost.

Therefore, the results can be very subjective and without proof after the test strip has been saturated and / or discarded.

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