US4393141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for examining urine for particulate constituents
Assignee: Battelle-Institut
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Filing: 1982-02-25
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Granted: 1983-07-12
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Expires: 2002-02-25
Abstract
Abstract To examine urine for particulate constituents, the urine is pased through a filter of synthetic fibers that are soluble in alcohol or in an alcohol-water mixture immediately after withdrawal. The filter material together with the constituents retained in it is then immediately dissolved in a cell-fixing solvent, in which it is protected from environmental influences and stored until it is examined. An appropriate device for the implementation of this method consists of a urine collector and a filter cartridge which is fastened to the collector by a spring catch and can be detached after the urine has been passed through the filter, and connected liquid-tight with a storage vessel containing the solvent.
Inventors
- 👤 Gert Schlueter
- 👤 Wilhelm Schuster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:58
CPC Classifications
G; G01; G01N; G01N1/00; G01N1/28; G01N1/40; G01N1/4077; G01N33/00; G01N33/48; G01N33/483; G01N33/487; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375; Y10T436/255
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
Method of examining urine for particulate constituents comprising: (a) passing voided or withdrawn urine through a filter of synthetic fibers to capture said particulate constituents, said synthetic fibers being soluble in alcohol or in aqueous alcohol; (b) contacting the synthetic fibers resulting from step (a) with alcohol or aqueous alcohol to simultaneously dissolve the synthetic fibers and to fix the particulate constituents whereby an examinable specimen is obtained; and (c) storing the examinable specimen resulting from step (b) until the specimen is examined.
Claim 2
Dependent Claim
83 words
Method of examining urine for particulate constituents comprising: (a) passing voided or withdrawn urine through a filter of synthetic fibers to capture said particulate constituents, said synthetic fibers being soluble in alcohol or in aqueous alcohol; (b) contacting the synthetic fibers resulting from step (a) with alcohol or aqueous alcohol to simultaneously dissolve the synthetic fibers and to fix the particulate constituents whereby an examinable specimen is obtained; and (c) storing the examinable specimen resulting from step (b) until the specimen is examined.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein the particulate constituents are cells.
Claim 4
Dependent Claim
17 words
Method as claimed in claim 1 wherein a cytopigment is added to the alcohol or aqueous alcohol.
Claim 5
Dependent Claim
92 words
Device for carrying out the method of examining urine for particulate constituents, the device consists essentially of (a) a urine collector, and (b) a detachable filter cartridge, which is affixed to said collector, said filter cartridge containing, as filter material, synthetic fibers that are soluble in alcohol or in aqueous alcohol, after the urine has passed through the filter, and after the collector has been removed, a liquid-tight connection is establishable between one opening of the filter cartridge and a storage vessel and the other opening is closable in a liquid-tight manner.
Claim 6
Dependent Claim
92 words
Device for carrying out the method of examining urine for particulate constituents, the device consists essentially of (a) a urine collector, and (b) a detachable filter cartridge, which is affixed to said collector, said filter cartridge containing, as filter material, synthetic fibers that are soluble in alcohol or in aqueous alcohol, after the urine has passed through the filter, and after the collector has been removed, a liquid-tight connection is establishable between one opening of the filter cartridge and a storage vessel and the other opening is closable in a liquid-tight manner.
Claim 7
Dependent Claim
35 words
Device as claimed in claim 4 wherein the outlet of the filter cartridge is placed on the storage vessel and the inlet of the filter cartridge is sealed with the cover of the storage vessel.
Claim 8
Dependent Claim
28 words
Device as claimed in claim 5 wherein the storage vessel is a beaded rim bottle and the filter cartridge is connected with the vessel by a spring catch.
Claim 9
Dependent Claim
28 words
Device as claimed in claim 4 wherein the storage vessel is a beaded rim bottle and the filter cartridge is connected with the vessel by a spring catch.
References Cited (Backward Citations)
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US3630683A
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US3682321A
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US4294582A
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US4321139A
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US4350768A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |