US3741400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood sample container
Assignee: Individual
•
Filing: 1970-06-15
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Granted: 1973-06-26
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Expires: 1990-06-15
Abstract
Abstract A generally tubular shaped container includes an expandable head valve member and retaining clip assembly therewithin. On centrifuging the clip is disengaged from the valving member, permitting it to expand toward the inner walls of the container to form two separate compartments, one for the blood cells and one for the serum. During centrifuging, the valve member head is temporarily deformed at its edges an amount sufficient to allow the cells to move therepast, and at the conclusion of centrifuging the head resumes sealing engagement with the container wall. The serum may then be simply poured out of the container for testing. In a further aspect, the tubular container has a spring-loaded valving member disposed at substantially the mid-point thereof. In a still further form, filter means are located within a test tube, through which serum can pass, but blood cells cannot.
Inventors
- 👤 J Dick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:48
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5021; B01L2300/00; B01L2300/06; B01L2300/0681; B01L2400/00; B01L2400/06; B01L2400/0633
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
Container apparatus actuatable by centrifuging force to segregate materials of differing density composing a liquid sample carried thereby, comprising in combination: a test tube; a support rod; a pliable sealing member received onto one end of the support rod, said sealing member having transverse dimensions greater than the test tube inner diameter; and a clip received onto the support rod and including clasps for engaging the sealing member margins from the rod side and constricting them inwardly; said rod, sealing member and clip being received within the test tube with the rod engaging the tube bottom whereby during centrifuging the clip is forced off the sealing member and the sealing member edges are bent toward the tube bottom allowing denser materials of the liquid sample to pass.
Claim 2
Dependent Claim
127 words
Container apparatus actuatable by centrifuging force to segregate materials of differing density composing a liquid sample carried thereby, comprising in combination: a test tube; a support rod; a pliable sealing member received onto one end of the support rod, said sealing member having transverse dimensions greater than the test tube inner diameter; and a clip received onto the support rod and including clasps for engaging the sealing member margins from the rod side and constricting them inwardly; said rod, sealing member and clip being received within the test tube with the rod engaging the tube bottom whereby during centrifuging the clip is forced off the sealing member and the sealing member edges are bent toward the tube bottom allowing denser materials of the liquid sample to pass.
Claim 3
Dependent Claim
108 words
Container apparatus actuatable during centrifuging for separating blood cells from serum composing a blood sample carried thereby, comprising in combination: a test tube; a disc valve seat fittingly received within the test tube and including an opening passing therethrough; support members connected to the valve seat and extending downwardly in the tube; pedestal means secured to the lower ends of said support memberS; a coil spring having one end engaging the pedestal means and extending upwardly toward the valve seat; and a closure member actuated by the free end of the spring to close the opening in the valve seat when the spring is in a relaxed state.
Claim 4
Dependent Claim
108 words
Container apparatus actuatable during centrifuging for separating blood cells from serum composing a blood sample carried thereby, comprising in combination: a test tube; a disc valve seat fittingly received within the test tube and including an opening passing therethrough; support members connected to the valve seat and extending downwardly in the tube; pedestal means secured to the lower ends of said support memberS; a coil spring having one end engaging the pedestal means and extending upwardly toward the valve seat; and a closure member actuated by the free end of the spring to close the opening in the valve seat when the spring is in a relaxed state.
Claim 5
Dependent Claim
30 words
Container apparatus as in claim 2, in which there is further provided clip means for engaging selected loops of said spring for maintaining the spring initially in a compressed state.
Claim 6
Dependent Claim
127 words
A fluid sample container adapted for receipt within a centrifuge, comprising in combination: test tube container means having an open end and a closed end; and force actuated valve means carried within said container means, said valve means including, a resiliently deformable head element of dimensions slightly exceeding those of the container means transverse internal cavity received within said container means, and support means connected to said head element and resting on the inner closed end of said container means for holding the head element spaced from said container means closed end, the peripheral margins of said head element deforming during centrifuging to allow suspended materials in the fluid sample to pass into the container means cavity between said head element and said container meand closed end.
Claim 7
Dependent Claim
127 words
A fluid sample container adapted for receipt within a centrifuge, comprising in combination: test tube container means having an open end and a closed end; and force actuated valve means carried within said container means, said valve means including, a resiliently deformable head element of dimensions slightly exceeding those of the container means transverse internal cavity received within said container means, and support means connected to said head element and resting on the inner closed end of said container means for holding the head element spaced from said container means closed end, the peripheral margins of said head element deforming during centrifuging to allow suspended materials in the fluid sample to pass into the container means cavity between said head element and said container meand closed end.
Claim 8
Dependent Claim
28 words
A fluid sample container as in claim 5, in which the head element is of frusto-conical shape, the convex part thereof facing toward the container means open end.
Claim 9
Dependent Claim
56 words
A fluid sample container as in claim 5, in which a retaining clip is clampingly received onto the head element deforming the element edge margins sufficiently to allow the fluid sample to pass around said margins into the lower reaches of said container means, said clip being disengaged from said head element by the centrifuging force.
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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) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |