Patent US4294582A successfully refreshed from Google Patents.
US4294582A
Expired / Lapsed
US
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Method for processing a body liquid specimen
Assignee: Individual
•
Filing: 1980-07-09
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Granted: 1981-10-13
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Expires: 2000-07-09
Abstract
Abstract A method and device for processing a body liquid specimen used for diagnostical examination. The specimen is brought to settle for a predetermined time in a first chamber of a container which has a second, separate chamber containing a certain amount of a fixative, whereupon a portion of the specimen containing a predetermined amount of a concentrate having high concentration of settled body cells is separated and confined in a third chamber, which is formed by partitioning off a portion of the first chamber. Thereafter the remaining body liquid is removed from the container, and said second and third chambers are interconnected in order to form a common, sealed chamber in which the concentrate is mixed with the fixative.
Inventors
- 👤 Jan I. Naslund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:51
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/491; Y; Y10; Y10T; Y10T436/00; Y10T436/25; Y10T436/25375
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
181 words
A method of processing a urine specimen for diagnostic examination, comprising the steps of: introducing a fixative into the lower, closed end of an elongated tube formed of flexible material; closing the tube with a first removable clip just above the portion containing the fixative; introducing the urine specimen into the tube through a collapsible hopper which forms an open upper end of the tube and which funnels the urine down into said tube just above said removable clip; permitting the urine specimen to separate, by settlement, to form a concentrate having a higher concentration of settled body cells than the rest of the urine specimen, and such that said concentrate is located adjacent the said removable clip; applying a further removable clip across the first chamber of said tube to separate some or all of said concentrate from the remainder of the urine specimen therein; removing said first removable clip to place said concentrate and said fixative into communication with each other to mix said concentrate with said fixative; and removing the remainder of the urine specimen from said tube.
Claim 2
Independent Claim
181 words
A method of processing a urine specimen for diagnostic examination, comprising the steps of: introducing a fixative into the lower, closed end of an elongated tube formed of flexible material; closing the tube with a first removable clip just above the portion containing the fixative; introducing the urine specimen into the tube through a collapsible hopper which forms an open upper end of the tube and which funnels the urine down into said tube just above said removable clip; permitting the urine specimen to separate, by settlement, to form a concentrate having a higher concentration of settled body cells than the rest of the urine specimen, and such that said concentrate is located adjacent the said removable clip; applying a further removable clip across the first chamber of said tube to separate some or all of said concentrate from the remainder of the urine specimen therein; removing said first removable clip to place said concentrate and said fixative into communication with each other to mix said concentrate with said fixative; and removing the remainder of the urine specimen from said tube.
Claim 3
Dependent Claim
51 words
A method of processing a urine specimen according to claim 1 further including the step of applying a clip to the tube above said further clip after removal of the remainder of the urine specimen from said tube to thereby further secure the sealing of said tube for transportation and handling.
References Cited (Backward Citations)
US3036894A
Cited
US3532470A
Cited
US3579303A
Cited
US3660033A
Cited
US3926195A
Cited
US3850159A
Cited
US3874042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-10-12 | 1985-04-13 | 1985-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-12 | 1989-04-13 | 1989-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-12 | 1993-04-13 | 1993-10-13 | $7700.00 | Window Closed / Lapsed |