US3786985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood collection container
Assignee: F Hoffmann La Roche AG
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Filing: 1973-01-05
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Granted: 1974-01-22
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Expires: 1993-01-05
Abstract
Abstract An improved blood collection container having a reduced portion disposed between its closed longitudinal ends and a stopper means disposed therein and adopted under the influence of centrifugal force to be securely received in the reduced portion is described.
Inventors
- 👤 M Blaivas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:26
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150351; B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
A method for stabilizing a blood sample after collection in a hollow container, which container comprises two closed ends connected by elongated sides, said sides having formed therein a reduced portion which extends inwardly into the interior of the hollow container, said container including a movable elastomeric closure means disposed in the interior of the hollow container between one of said closed ends in close proximity to the lastmentioned closed end and the reduced portion, such closure means having a deformable end extending toward the reduced portion, the other end of the closure means under normal conditions being in resilient engagement with the inner walls of said sides, which comprises (1) centrifuging said container at a speed that effects separation of the blood sample contained therein into two discrete phases, one phase consisting predominantly of the liquid constituent of the blood sample and the other consisting predominantly of the particulate phase; (2) increasing the centrifugal speed, to a speed which causes movement of the resilient member toward the reduced portion; and (3) centrifuging aT such rate until the deformable end is securely received in the reduced portion.
Claim 2
Independent Claim
187 words
A method for stabilizing a blood sample after collection in a hollow container, which container comprises two closed ends connected by elongated sides, said sides having formed therein a reduced portion which extends inwardly into the interior of the hollow container, said container including a movable elastomeric closure means disposed in the interior of the hollow container between one of said closed ends in close proximity to the lastmentioned closed end and the reduced portion, such closure means having a deformable end extending toward the reduced portion, the other end of the closure means under normal conditions being in resilient engagement with the inner walls of said sides, which comprises (1) centrifuging said container at a speed that effects separation of the blood sample contained therein into two discrete phases, one phase consisting predominantly of the liquid constituent of the blood sample and the other consisting predominantly of the particulate phase; (2) increasing the centrifugal speed, to a speed which causes movement of the resilient member toward the reduced portion; and (3) centrifuging aT such rate until the deformable end is securely received in the reduced portion.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |