US4789629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for collecting and testing for fecal occult blood
Assignee: SmithKline Diagnostics Inc
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Filing: 1986-11-24
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Granted: 1988-12-06
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Expires: 2006-11-24
Abstract
Abstract A method and slide for collecting and testing fecal occult blood which permits multiple analyses of a single fecal sample. The slide contains a pocket-like member on a portion of the inside front cover of the slide. An absorbent insert is disposed in the pocket. When the cover is in a closed position the pocket overlies the fecal smear on the specimen viewing sheet and the insert can be removed from the pocket. This design permits an analysis to be done on the specimen receiving sheet of the slide together with a second confirmatory test on the insert.
Inventors
- 👤 Josefina T. Baker
- 👤 Joseph F. Pagano
- 👤 Ronald J. Schoengold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:51
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/505; B01L3/5055; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/72; G01N33/721; G01N33/726; Y; Y10; Y10S; Y10S435/00; Y10S435/81; Y10S436/00; Y10S436/807; Y10S436/808; Y10S436/904
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
In an occult blood specimen test slide having a front panel, a rear panel, said front panel having one or more openings, sheet means carrying a test reagent between the front and rear panels underlying each of said openings a hinged cover configured to overlie a portion of the front panel and said openings and flap means in the rear panel opposite said openings and pivotable to expose the underside of the sheet, the improvement comprising a pocket-like member attached to a portion of the inside of said hinged cover and an absorbent insert disposed in said pocket whereby when the cover is in a closed mode, the pocket is positioned to overlie the openings of the front panel and the insert which has a portion exposed beyond the closure line of the cover can be slidably removed from the pocket, said pocket-like member having a consistency which permits filtration of a specimen fluid onto said insert.
Claim 2
Dependent Claim
157 words
In an occult blood specimen test slide having a front panel, a rear panel, said front panel having one or more openings, sheet means carrying a test reagent between the front and rear panels underlying each of said openings a hinged cover configured to overlie a portion of the front panel and said openings and flap means in the rear panel opposite said openings and pivotable to expose the underside of the sheet, the improvement comprising a pocket-like member attached to a portion of the inside of said hinged cover and an absorbent insert disposed in said pocket whereby when the cover is in a closed mode, the pocket is positioned to overlie the openings of the front panel and the insert which has a portion exposed beyond the closure line of the cover can be slidably removed from the pocket, said pocket-like member having a consistency which permits filtration of a specimen fluid onto said insert.
Claim 3
Dependent Claim
12 words
The test slide of claim 1 wherein the test reagent is guaiac.
Claim 4
Dependent Claim
117 words
A method for determining the presence of fecal occult blood with the specimen test slide of claim 1 which comprises: (a) smearing fecal matter onto the reagent sheet through an opening of the front panel; (b) closing the front cover of the test slide whereby the pocket is overlying the opening and the insert has a portion exposed beyond the closure line; (c) removing the insert which contains fecal fluids which passed through the pocket from the fecal matter; (d) opening the rear cover and applying a developing solution to the reagent sheet at the corresponding opening in the rear panel, and (e) conducting a second confirmatory test on the insert, said insert being free of guaiac.
Claim 5
Dependent Claim
18 words
The method of claim 3 in which the confirmatory test is an immunological assay specific for human hemoglobin.
Claim 6
Dependent Claim
10 words
The method of claim 3 wherein the reagent is guaiac.
Claim 7
Dependent Claim
31 words
A test kit for collecting and testing fecal occult blood which comprises the device of claim 2 and a developing solution which reacts with said guaiac to color the sheet blue.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |