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US4934545A
Expired / Lapsed
US
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Closure with microbial filter
Assignee: Abbott Laboratories
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Filing: 1989-01-19
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Granted: 1990-06-19
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Expires: 2009-01-19
Abstract
Abstract A closure containing an internalized microbial filter for use in enteral delivery set assemblies. The closure comprises a generally cylindrical side wall, a planar top surface having first and second projections, the first projection being associated with the spikable membrane while the second projection is associated with a filter and with means to limit air access to the filter. The closure also includes a bottom surface having an aperture which extends through the closure to the top surface thereof with the filter being secured to the bottom surface and extending across the opening of the aperture.
Inventors
- 👤 Paul A. Pezzoli
- 👤 James Renick
- 👤 Gary N. Smith
- 👤 Jerold W. Montgomery
- 👤 David Hofferbert
- 👤 Mark Larkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:01
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/16; B65D51/1605; B65D51/1616; A; A61; A61J; A61J1/00; A61J1/14; A61J1/1406; A61J1/1412; A61J1/1418; A61J1/1475; A61J1/1443; A61J1/145; A61J1/1468
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
113 words
A closure for a product container, said closure comprising, a generally cylindrical side wall, said side wall having threads along the inner surface thereof for threadedly engaging the neck of said container, a planar top surface, said top surface having a first projection extending upwardly therefrom, said first projection being associated with a spikable membrane, a bottom surface having an aperture which extends through said closure to said top surface, said bottom surface having a filter secured thereto, and means to limit atmospheric air access to said filter, said top surface having a second projection extending upwardly therefrom, said second projection associated with said means to limit atmospheric air access to said filter.
Claim 2
Dependent Claim
113 words
A closure for a product container, said closure comprising, a generally cylindrical side wall, said side wall having threads along the inner surface thereof for threadedly engaging the neck of said container, a planar top surface, said top surface having a first projection extending upwardly therefrom, said first projection being associated with a spikable membrane, a bottom surface having an aperture which extends through said closure to said top surface, said bottom surface having a filter secured thereto, and means to limit atmospheric air access to said filter, said top surface having a second projection extending upwardly therefrom, said second projection associated with said means to limit atmospheric air access to said filter.
Claim 3
Dependent Claim
21 words
The closure as claimed in claim 1 wherein said filter is heat staked material which is fused to said bottom surface.
Claim 4
Dependent Claim
14 words
The closure as claimed in claim 1 wherein said filter is a microbial filter.
Claim 5
Dependent Claim
18 words
The closure as claimed in claim 3 wherein said filter is fabricated from a woven synthetic fiber material.
Claim 6
Dependent Claim
17 words
The closure as claimed in claim 4 wherein said closure is fabricated from a semi-rigid plastic material.
Claim 7
Dependent Claim
14 words
The closure as claimed in claim 5 wherein said filter forms a semi-permeable membrane.
Claim 8
Dependent Claim
14 words
The closure as claimed in claim 6 wherein said filter is fabricated from Zitex.
Claim 9
Dependent Claim
14 words
The closure as claimed in claim 6 wherein said filter is fabricated from Pallflex.
Claim 10
Dependent Claim
25 words
The closure as claimed in claim 1 wherein said bottom surface has an annular raised portion, said filter being secured adjacent said annular raised portion.
Claim 11
Dependent Claim
18 words
The closure as claimed in claim 9 wherein said filter is secured centrally of said raised annular portion.
Claim 12
Dependent Claim
28 words
The closure as claimed in claim 10 wherein said first projection is located diagonally across said closure from said means to limit atmospheric air access to said filter.
Claim 13
Dependent Claim
151 words
A closure for an enteral nutritional product container, said closure comprising a generally cylindrical side wall, said side wall having threads along the inner surface thereof for threadedly engaging the neck of said container, a planar top surface, said top surface having a first projection and a second projection extending upwardly therefrom, said first projection being associated with a spikable membrane, said second projection being associated with a microbial filter which allows atmospheric air to enter said container and with means to limit atmospheric air access to said microbial filter, said first projection located diagonally across said closure from said means to limit atmospheric air access to said microbial filter, and a bottom surface, said bottom surface having an aperture which extends through said closure to said top surface, the improvement characterized in that said microbial filter is secured to said bottom surface and extends across the opening of said aperture.
Claim 14
Dependent Claim
151 words
A closure for an enteral nutritional product container, said closure comprising a generally cylindrical side wall, said side wall having threads along the inner surface thereof for threadedly engaging the neck of said container, a planar top surface, said top surface having a first projection and a second projection extending upwardly therefrom, said first projection being associated with a spikable membrane, said second projection being associated with a microbial filter which allows atmospheric air to enter said container and with means to limit atmospheric air access to said microbial filter, said first projection located diagonally across said closure from said means to limit atmospheric air access to said microbial filter, and a bottom surface, said bottom surface having an aperture which extends through said closure to said top surface, the improvement characterized in that said microbial filter is secured to said bottom surface and extends across the opening of said aperture.
Claim 15
Dependent Claim
91 words
A closure for a product container, said closure comprising, a generally cylindrical side wall, a planar top surface, said top surface having a first projection and a second projection, said first projection being associated with a spikable membrane, said second projection being associated with a filter and with means to limit air access to said filter, and a bottom surface, said bottom surface having an aperture which extends through said closure to said top surface, said filter being secured to said bottom surface and extending across the opening of said aperture.
Claim 16
Dependent Claim
91 words
A closure for a product container, said closure comprising, a generally cylindrical side wall, a planar top surface, said top surface having a first projection and a second projection, said first projection being associated with a spikable membrane, said second projection being associated with a filter and with means to limit air access to said filter, and a bottom surface, said bottom surface having an aperture which extends through said closure to said top surface, said filter being secured to said bottom surface and extending across the opening of said aperture.
References Cited (Backward Citations)
US4235344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |