Patent US5492826A successfully refreshed from Google Patents.
US5492826A
Expired / Lapsed
US
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Apparatus and method for seeding endothelial cells
Assignee: Corewell Health William Beaumont University Hospital
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Filing: 1993-12-10
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Granted: 1996-02-20
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Expires: 2013-12-10
Abstract
Abstract An apparatus and method for culturing living endothelial cells is provided. The apparatus comprises a cell growth container, which in a preferred embodiment is a synthetic graft, heat crimped at both ends. The apparatus further comprises a rotation container that may contain the cell growth container and is attached to a rotation apparatus. The apparatus further comprises fixturing apparatus, which in a preferred embodiment is a pair of o-ring members, that enhances a separated condition of the cell growth container within the rotation container. The method of the present invention comprises providing a culture that includes living cells and a growth medium, introducing the culture into a cell growth container, heat crimping the cell growth container to substantially seal the cell growth container, and positioning fixturing apparatus upon the external surface of the cell growth container. This assembly is inserted into a rotation container, which is rotated by a rotation apparatus.
Inventors
- 👤 Laurace E. Townsend
- 👤 Michael J. E. Borrelli
- 👤 Diane E. Maupin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:35
CPC Classifications
C; C12; C12M; C12M27/00; C12M27/10; C12M21/00; C12M21/08; C12M23/00; C12M23/02; C12M23/08
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
A method for growing living cells comprising the steps of: providing a culture including living cells and a growth medium; introducing said culture into a hollow cylindrical cell growth container capable of being substantially sealed by heat crimping; heat crimping said cell growth container, thereby substantially sealing said cell growth container; positioning a fixturing means in contact with said cell growth container, thereby forming a cell growth assembly, wherein the fixturing means is a pair of o-ring members; inserting said cell growth assembly into a rotation container, such that each o-ring is operable to enhance a separated condition of said cell growth container from said rotation container; and rotating said rotation container at a preselected rate, thereby rotating said cell growth container.
Claim 2
Independent Claim
122 words
A method for growing living cells comprising the steps of: providing a culture including living cells and a growth medium; introducing said culture into a hollow cylindrical cell growth container capable of being substantially sealed by heat crimping; heat crimping said cell growth container, thereby substantially sealing said cell growth container; positioning a fixturing means in contact with said cell growth container, thereby forming a cell growth assembly, wherein the fixturing means is a pair of o-ring members; inserting said cell growth assembly into a rotation container, such that each o-ring is operable to enhance a separated condition of said cell growth container from said rotation container; and rotating said rotation container at a preselected rate, thereby rotating said cell growth container.
Claim 3
Independent Claim
108 words
An apparatus for culturing living cells comprising: a hollow cylindrical cell growth container having two ends, each end being heat crimped, said cell growth container being operable to contain a cell culture, said cell growth container being operable to be rotated by a rotation means; a rotation container operable to contain said cell growth container: said rotation container being operable to be substantially fixedly attached in substantially synchronous relation with a rotation means; and retaining means positioned in contact with said cell growth container for enhancing a separated condition of said cell growth container within said rotation container, wherein said retaining means comprises at least one o-ring member.
Claim 4
Independent Claim
108 words
An apparatus for culturing living cells comprising: a hollow cylindrical cell growth container having two ends, each end being heat crimped, said cell growth container being operable to contain a cell culture, said cell growth container being operable to be rotated by a rotation means; a rotation container operable to contain said cell growth container: said rotation container being operable to be substantially fixedly attached in substantially synchronous relation with a rotation means; and retaining means positioned in contact with said cell growth container for enhancing a separated condition of said cell growth container within said rotation container, wherein said retaining means comprises at least one o-ring member.
Claim 5
Dependent Claim
17 words
The apparatus according to claim 2 wherein said retaining means further comprises a pair of o-ring members.
Claim 6
Dependent Claim
15 words
The apparatus according to claim 2 wherein said cell growth container comprises a synthetic graft.
Claim 7
Dependent Claim
14 words
The apparatus according to claim 4 wherein said synthetic graft comprises an expanded-polytetrafiuororethylene graft.
Claim 8
Dependent Claim
14 words
The apparatus according to claim 2 wherein said rotation container is a centrifuge tube.
Claim 9
Independent Claim
92 words
An apparatus for culturing cells comprising: a hollow cylindrical synthetic graft having two ends, each end being heat crimped, said synthetic graft being operable to contain a cell culture, said synthetic graft being operable to be rotated by a rotation means; a rotation container operable to contain said synthetic graft, said rotation container being operable to be substantially fixedly attached in substantially synchronous relation with a rotation means; and a plurality of o-ring members positioned about said synthetic graft for enhancing a separated condition of said synthetic graft from said rotation container.
Claim 10
Independent Claim
92 words
An apparatus for culturing cells comprising: a hollow cylindrical synthetic graft having two ends, each end being heat crimped, said synthetic graft being operable to contain a cell culture, said synthetic graft being operable to be rotated by a rotation means; a rotation container operable to contain said synthetic graft, said rotation container being operable to be substantially fixedly attached in substantially synchronous relation with a rotation means; and a plurality of o-ring members positioned about said synthetic graft for enhancing a separated condition of said synthetic graft from said rotation container.
Claim 11
Independent Claim
101 words
An apparatus for culturing cells comprising: a hollow cylindrical synthetic graft having two ends, each end being heat crimped, said synthetic graft being operable to contain a cell culture, said synthetic graft being operable to be rotated by a rotation means, and wherein said synthetic graft comprises an expanded-polytetrafiuoroethylene graft; a rotation container operable to contain said synthetic graft, said rotation container being operable to be substantially fixedly attached in substantially synchronous relation with a rotation means; and a plurality of o-ring members positioned about said synthetic graft for enhancing a separated condition of said synthetic graft from said rotation container.
Claim 12
Independent Claim
101 words
An apparatus for culturing cells comprising: a hollow cylindrical synthetic graft having two ends, each end being heat crimped, said synthetic graft being operable to contain a cell culture, said synthetic graft being operable to be rotated by a rotation means, and wherein said synthetic graft comprises an expanded-polytetrafiuoroethylene graft; a rotation container operable to contain said synthetic graft, said rotation container being operable to be substantially fixedly attached in substantially synchronous relation with a rotation means; and a plurality of o-ring members positioned about said synthetic graft for enhancing a separated condition of said synthetic graft from said rotation container.
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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) | 1999-02-19 | 1999-08-21 | 2000-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-19 | 2003-08-21 | 2004-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-19 | 2007-08-21 | 2008-02-20 | $7700.00 | Window Closed / Lapsed |