US5269927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation device for use in blood collection tubes
Assignee: Covidien AG
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Filing: 1991-12-16
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Granted: 1993-12-14
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Expires: 2011-12-16
Abstract
Abstract A serum or plasma collection device including a gel material for partitioning and separating heavier and lighter phases of a fluid sample such as a blood sample. The device preferably includes a member such as a disc-shaped or ring-shaped member or a combination thereof to prevent the separated material from interfering with the sampling of the separated fluid sample. The member is preferably formed of hydrophobic and/or non-wetted material and has a specific gravity different than the specific gravity of the lighter phase. The member also physically separates the separated material from the fluid to be sampled to allow the user to obtain an uncontaminated fluid sample.
Inventors
- 👤 William R. Fiehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:50
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5021; B01L3/50215; 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: 21
Claim 1
Independent Claim
128 words
An apparatus for collecting a multiphase fluid such as blood and for partitioning said fluid into a plurality of phases, said apparatus comprising: a container having sidewalls and an open end with an access means thereon for the receipt of a collected fluid therein; a partitioning agent operatively associated with said container and having a specific gravity different than the specific gravities of said plurality of phases, said partitioning agent being formed of a plurality of materials wherein at least one of said materials separates form said partitioning agent; device member to physically obstruct the flow of the separated material through said container and prevent the separated material from interfering with the sampling of the collected fluid; and wherein said device member includes a generally ring-shaped first member.
Claim 2
Independent Claim
128 words
An apparatus for collecting a multiphase fluid such as blood and for partitioning said fluid into a plurality of phases, said apparatus comprising: a container having sidewalls and an open end with an access means thereon for the receipt of a collected fluid therein; a partitioning agent operatively associated with said container and having a specific gravity different than the specific gravities of said plurality of phases, said partitioning agent being formed of a plurality of materials wherein at least one of said materials separates form said partitioning agent; device member to physically obstruct the flow of the separated material through said container and prevent the separated material from interfering with the sampling of the collected fluid; and wherein said device member includes a generally ring-shaped first member.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1 wherein said device member includes a hydrophobic material thereon and wherein said separated material has an affinity for said hydrophobic material.
Claim 4
Dependent Claim
21 words
The apparatus of claim 1 wherein said device member further includes means for deflecting the flow of said separated material thereon.
Claim 5
Dependent Claim
15 words
The apparatus of claim 3 wherein said means for deflecting is a disc-shaped second member.
Claim 6
Dependent Claim
15 words
The apparatus of claim 3 wherein said means for deflecting is a funnel-shaped second member.
Claim 7
Dependent Claim
18 words
The apparatus of claim 3 wherein said means for deflecting is fixedly spaced apart from said first member.
Claim 8
Dependent Claim
23 words
The apparatus of claim 6 wherein said device member includes a support member extending between said first member and said means for deflecting.
Claim 9
Independent Claim
92 words
An apparatus for use in a fluid containing collection tube for preventing the interference of material which separates from a partitioning agent in the collection tube with the sampling of the contents of the collection tube, said apparatus comprising: a first member; a second member fixedly spaced apart form said first member and wherein at least one of said first or second members includes a surface thereon to allow the contents of the collection tube to flow around said first or second member; and wherein said second member is a disc-shaped member.
Claim 10
Independent Claim
92 words
An apparatus for use in a fluid containing collection tube for preventing the interference of material which separates from a partitioning agent in the collection tube with the sampling of the contents of the collection tube, said apparatus comprising: a first member; a second member fixedly spaced apart form said first member and wherein at least one of said first or second members includes a surface thereon to allow the contents of the collection tube to flow around said first or second member; and wherein said second member is a disc-shaped member.
Claim 11
Independent Claim
92 words
An apparatus for use in a fluid containing collection tube for preventing the interference of material which separates form a partitioning agent in the collection tube with the sampling of the contents of the collection tube, said apparatus comprising: a first member; a second member fixedly spaced apart from said first member and wherein at least one of said first or second members includes a surface thereon to allow the contents of the collection tube to flow around said first or second member; and wherein said second member is a funnel-shaped member.
Claim 12
Independent Claim
92 words
An apparatus for use in a fluid containing collection tube for preventing the interference of material which separates form a partitioning agent in the collection tube with the sampling of the contents of the collection tube, said apparatus comprising: a first member; a second member fixedly spaced apart from said first member and wherein at least one of said first or second members includes a surface thereon to allow the contents of the collection tube to flow around said first or second member; and wherein said second member is a funnel-shaped member.
Claim 13
Independent Claim
108 words
An apparatus for use in a fluid containing collection tube for preventing the interference of material which separates from a partitioning agent in the collection tube with the sampling of the contents of the collection tube, said apparatus comprising: a first member; a second member fixedly spaced apart form said first member and wherein at least one of said first or second members includes a surface thereon to allow the contents of the collection tube to flow around said first or second member; and wherein said first member is a ring-shaped member having an opening therein to allow the contents of the collection tube to be sampled therethrough.
Claim 14
Independent Claim
108 words
An apparatus for use in a fluid containing collection tube for preventing the interference of material which separates from a partitioning agent in the collection tube with the sampling of the contents of the collection tube, said apparatus comprising: a first member; a second member fixedly spaced apart form said first member and wherein at least one of said first or second members includes a surface thereon to allow the contents of the collection tube to flow around said first or second member; and wherein said first member is a ring-shaped member having an opening therein to allow the contents of the collection tube to be sampled therethrough.
Claim 15
Independent Claim
75 words
A device for use in a fluid receiving collection tube, said device comprising: a first member having a generally ring-shaped portion with an opening extending therethrough; a second member having first and second surfaces thereon and wherein said second surface has a radius greater than that of said first member; and support means extending between said first member and said second member to retain said first member fixedly positioned with respect to said second member.
Claim 16
Independent Claim
75 words
A device for use in a fluid receiving collection tube, said device comprising: a first member having a generally ring-shaped portion with an opening extending therethrough; a second member having first and second surfaces thereon and wherein said second surface has a radius greater than that of said first member; and support means extending between said first member and said second member to retain said first member fixedly positioned with respect to said second member.
Claim 17
Dependent Claim
14 words
The device of claim 11 wherein said second member has a disc-shaped portion thereon.
Claim 18
Independent Claim
65 words
An apparatus for use in a fluid receiving collection tube, said apparatus comprising: a first member having a ring-shaped portion with an opening extending therethrough; a second member having a conical shape with a base portion and an apex thereon; and support means extending between said first member and said second member to retain said first member fixedly positioned with respect to said second member.
Claim 19
Independent Claim
65 words
An apparatus for use in a fluid receiving collection tube, said apparatus comprising: a first member having a ring-shaped portion with an opening extending therethrough; a second member having a conical shape with a base portion and an apex thereon; and support means extending between said first member and said second member to retain said first member fixedly positioned with respect to said second member.
Claim 20
Dependent Claim
16 words
The apparatus of claim 13 wherein said apex of said second member includes an opening therethrough.
Claim 21
Dependent Claim
28 words
The apparatus of claim 13 wherein said base portion of said second member is further spaced apart from said first member than said apex of said second member.
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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) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |