US4801428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood sample sedimentation test kit
Assignee: Becton Dickinson and Co
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Filing: 1986-10-27
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Granted: 1989-01-31
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Expires: 2006-10-27
Abstract
Abstract A test kit is provided for measuring the erythrocyte sedimentation rate automatically in the original blood collection tube which is of a size and is so modified to be used for the resulting testing that no further blood transfer is required. The blood collection tube is evacuated to the desired level to obtain the desired quantity of blood to be collected and contains the proper quantity of anticoagulant. The test kit of the invention includes one or more tube-like slots for maintaining the blood collection tubes stable and in a vertical orientation for the testing procedure. Each slot includes a tube sleeve vertically adjustable in each slot. Each sleeve includes an appropriate Westergren scale which is moved with the sleeve to accommodate the positioning of the initial top level of the red blood cells in the sample.
Inventors
- 👤 Johannes Homolko
- 👤 Pierre T. Dader
- 👤 Bernard Assier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:51
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/04; G01N15/05; Y; Y10; Y10T; Y10T436/00; Y10T436/11; Y10T436/113332
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
172 words
An assembly for testing the erythrocyte sedimentation rate of at least one blood sample wherein the sample is not moved during testing, comprising (a) a vertically positioned transparent rack assembly body; (b) a plurality of vertically positioned slots in said body for receiving a blood reagent tube therein; (c) a transparent sleeve positioned for vertical movement in each of said plurality of slots; (d) an adjusting means adjacent each of said plurality of slots, each said adjusting means extending horizontally through said body and into a respective slot associated therewith, for frictional engagement with a respective vertically movable sleeve positioned within said respective slot; (e) cooperating means on each said adjusting means for frictionally engaging said respective adjacent vertically movable sleeve for moving said vertically movable sleeve from one position to another in said respective slot; and (f) scale means on each of said vertically movable sleeves for measuring a level of blood sample contained in a blood reagent tube introduced into a respective vertically positioned slot containing said vertically movable sleeve.
Claim 2
Dependent Claim
172 words
An assembly for testing the erythrocyte sedimentation rate of at least one blood sample wherein the sample is not moved during testing, comprising (a) a vertically positioned transparent rack assembly body; (b) a plurality of vertically positioned slots in said body for receiving a blood reagent tube therein; (c) a transparent sleeve positioned for vertical movement in each of said plurality of slots; (d) an adjusting means adjacent each of said plurality of slots, each said adjusting means extending horizontally through said body and into a respective slot associated therewith, for frictional engagement with a respective vertically movable sleeve positioned within said respective slot; (e) cooperating means on each said adjusting means for frictionally engaging said respective adjacent vertically movable sleeve for moving said vertically movable sleeve from one position to another in said respective slot; and (f) scale means on each of said vertically movable sleeves for measuring a level of blood sample contained in a blood reagent tube introduced into a respective vertically positioned slot containing said vertically movable sleeve.
Claim 3
Dependent Claim
58 words
The assembly of claim 1, wherein each adjusting means adjacent a respective slot includes (a) a knob extending outwardly from said assembly body; (b) an axial drive bar connected to said knob and extending through said assembly body; and (c) a frictional drive sleeve extending over said drive bar for frictional engagement with a respective vertically movable sleeve.
Claim 4
Dependent Claim
74 words
The assembly of claim 2, wherein each cooperating means includes (a) a flat vertical drive surface on a respective vertically movable sleeve; (b) said drive surface extending vertically from a bottom edge of said respective vertically movable sleeve to a point spaced from the bottom edge thereof; and said respective frictional drive sleeve extending into a respective vertically positioned slot for frictionally engaging said flat vertical drive surface on said respective vertically movable sleeve.
Claim 5
Dependent Claim
41 words
The assembly of claim 1, further comprising (a) an elongated base for supporting said rack assembly body; and (b) cooperating attaching means on said body and said base for sliding attaching engagement of said elongated base and said rack assembly body.
Claim 6
Dependent Claim
97 words
The assembly of claim 1, further comprising (a) at least one reagent tube for obtaining a blood sample, said at least one tube for insertion into one of said plurality of vertically positioned slots in said assembly body; (b) each said at least one reagent tube having an open end and a closed end; (c) a stopper for closing the open end of said at least one reagent tube; and (d) an anticoagulant material in said at least one reagent tube, said anticoagulant material for mixing with a blood sample introduced into said at least one tube.
Claim 7
Dependent Claim
14 words
The assembly of claim 5, wherein (a) said anticoagulant material is a citrate solution.
Claim 8
Dependent Claim
25 words
The assembly of claim 1, wherein (a) said assembly body is comprised of a member selected from the group consisting of transparent plastic and glass.
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) | 1992-01-31 | 1992-08-01 | 1993-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-31 | 1996-08-01 | 1997-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-31 | 2000-08-01 | 2001-01-31 | $7700.00 | Window Closed / Lapsed |