US4152269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collection and separation device
Assignee: Warner Lambert Co LLC
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Filing: 1977-02-01
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Granted: 1979-05-01
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Expires: 1997-02-01
Abstract
Abstract A blood collection assembly and closure therefor, for the collection, separation, isolation and storage of serum from blood. The closure is constructed of a cannula penetrable self-sealing elastomer and includes a thixotropic barrier material in a hollow central portion of the closure, so that the barrier material is sealed within the closure until blood has been collected in the collection container and centrifuged. Centrifugation forces the barrier material into a collecton container through the passageway created by the cannula.
Inventors
- 👤 Arthur L. Babson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:46
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150206; A61B5/150221; A61B5/150351; A61B5/150374; A61B5/150381; A61B5/150389; A61B5/150473; A61B5/150496; A61B5/150992; A61B5/153; A61B5/154; A61J; A61J1/00; A61J1/14; A61J1/1406; G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/491; A61B5/150755; A61J1/05; A61J1/20; Y; Y10; Y10S; Y10S215/00; Y10S215/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
176 words
An assembly for the collection, separation, isolation and storage of serum from blood which comprises: a tubular blood collection container (33) having an open end and a closed end; an elastomeric self-sealing cannula penetrable closure member (10) sealing said open end of the container, said closure member comprising: a hollow cylindrical body (24) extending into the open end of said container and being surmounted by a coaxial head (23) having a greater diameter than said body, said said head having a flange member (34) seated over the open end of the blood collection container; an axially extending hollow shaft extending from said head through said body to a point just short of the lower terminus of said body, said lower terminus being of reduced thickness than the remainder of said body and forming a thin cannula penetrable zone; an elastomeric self-sealing member (12) hermetically closing said hollow shaft at its upper most terminus; said closed hollow shaft defining a reservoir (21) containing a thixotropic barrier material; and wherein said assembly is at least partially air evacuated.
Claim 2
Dependent Claim
176 words
An assembly for the collection, separation, isolation and storage of serum from blood which comprises: a tubular blood collection container (33) having an open end and a closed end; an elastomeric self-sealing cannula penetrable closure member (10) sealing said open end of the container, said closure member comprising: a hollow cylindrical body (24) extending into the open end of said container and being surmounted by a coaxial head (23) having a greater diameter than said body, said said head having a flange member (34) seated over the open end of the blood collection container; an axially extending hollow shaft extending from said head through said body to a point just short of the lower terminus of said body, said lower terminus being of reduced thickness than the remainder of said body and forming a thin cannula penetrable zone; an elastomeric self-sealing member (12) hermetically closing said hollow shaft at its upper most terminus; said closed hollow shaft defining a reservoir (21) containing a thixotropic barrier material; and wherein said assembly is at least partially air evacuated.
Claim 3
Dependent Claim
125 words
An elastomeric self-sealing closure comprising a hollow cylindrical body surmounted by a coaxial head portion having a greater diameter than said body, a hollow central shaft extending axially through said body from said head portion to a point just short of the lower terminus of said body wherein the thickness of said body between said lower terminus and the hollow central shaft is less than the thickness between said shaft and the outer surface of said body, whereby there is formed a cannula penetrable bottom portion; a cannula penetrable seal positioned over the opened end of said hollow shaft in said head portion and sealing said hollow shaft, said sealed hollow shaft defining a reservoir; and said reservoir containing a sterile thixotropic sealant barrier material.
Claim 4
Dependent Claim
125 words
An elastomeric self-sealing closure comprising a hollow cylindrical body surmounted by a coaxial head portion having a greater diameter than said body, a hollow central shaft extending axially through said body from said head portion to a point just short of the lower terminus of said body wherein the thickness of said body between said lower terminus and the hollow central shaft is less than the thickness between said shaft and the outer surface of said body, whereby there is formed a cannula penetrable bottom portion; a cannula penetrable seal positioned over the opened end of said hollow shaft in said head portion and sealing said hollow shaft, said sealed hollow shaft defining a reservoir; and said reservoir containing a sterile thixotropic sealant barrier material.
References Cited (Backward Citations)
US2631521A
Cited
US2115035A
Cited
US2911123A
Cited
US3696919A
Cited
US3761408A
Cited
US3780935A
Cited
US3920557A
Cited
US3957653A
Cited
US3976579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |