Patent US2659898A successfully refreshed from Google Patents.
Patent US4005710A successfully refreshed from Google Patents.
US4005710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parenteral apparatus with one-way valve
Assignee: Abbott Laboratories
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Filing: 1975-02-12
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Granted: 1977-02-01
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Expires: 1995-02-12
Abstract
Abstract A one-way valve which permits for positive and sensitive action as well as simplified construction in a parenteral solution administration device. Preferably, the valve is formed of a resilient material with a flat surface on one side and has projections extending from the opposite side to engage a wall surface surrounding an outlet orifice. The disc valve is free to move within the valve body and is laterally spaced therefrom to permit fluid to flow around the sidewall and between the projections.
Inventors
- 👤 Armand Al Zeddies
- 👤 Andrew John Muettertis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:21
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/22; A61M39/24; A61M39/02; F; F16; F16K; F16K15/00; F16K15/02; F16K15/021; F16K15/023; A61M2039/2433; A61M2039/2446; A61M2039/2453; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
214 words
A one-way valve for use in an apparatus for administering a parenteral solution to a patient comprising a valve body defining opposing end walls and a lateral wall surface with an intake orifice and an outlet orifice in said end walls, a freely movable, flexible valve member having a substantially thin body section with a width of a given dimension positioned between said end walls and spaced from said lateral wall surface, said valve member presenting a substantially solid surface portion facing said intake orifice, a plurality of substantially, uniformly spaced projections extending from said body section in one direction from one side of said valve member and inwardly over said body section within the extended confines of said body section to define a plurality of uniformly spaced openings between said projections in the valve member facing the outlet orifice, said projections having approximately the same height as said given width dimension for said body section and another projection extending from said body section from the other side thereof in a direction opposite to said plurality of projections and positioned substantially centrally with respect to said body section, said valve member constructed and arranged to be freely positioned in said valve body without substantial contact with said lateral wall surface of said valve body.
Claim 2
Dependent Claim
214 words
A one-way valve for use in an apparatus for administering a parenteral solution to a patient comprising a valve body defining opposing end walls and a lateral wall surface with an intake orifice and an outlet orifice in said end walls, a freely movable, flexible valve member having a substantially thin body section with a width of a given dimension positioned between said end walls and spaced from said lateral wall surface, said valve member presenting a substantially solid surface portion facing said intake orifice, a plurality of substantially, uniformly spaced projections extending from said body section in one direction from one side of said valve member and inwardly over said body section within the extended confines of said body section to define a plurality of uniformly spaced openings between said projections in the valve member facing the outlet orifice, said projections having approximately the same height as said given width dimension for said body section and another projection extending from said body section from the other side thereof in a direction opposite to said plurality of projections and positioned substantially centrally with respect to said body section, said valve member constructed and arranged to be freely positioned in said valve body without substantial contact with said lateral wall surface of said valve body.
Claim 3
Dependent Claim
20 words
The apparatus as defined in claim 1 wherein said solid surface portion of said flexible valve member is substantially flat.
Claim 4
Dependent Claim
36 words
The apparatus as defined in claim 1 wherein said valve body is defined by two opposing telescoping tubular members with the outlet orifice defined by one of the tubular members which is of a smaller diameter.
Claim 5
Dependent Claim
15 words
The apparatus as defined in claim 1 wherein said projections are of a uniform dimension.
Claim 6
Dependent Claim
26 words
The apparatus as defined in claim 4 wherein said projections are of a rounded configuration and are spaced equidistantly along the periphery of said valve member.
Claim 7
Dependent Claim
20 words
The apparatus as defined in claim 5 wherein the rounded members have a diameter smaller than the spacing between them.
Claim 8
Dependent Claim
21 words
The apparatus as defined in claim 5 wherein one of said plurality of projections is centrally positioned in said valve member.
Claim 9
Dependent Claim
35 words
The apparatus as defined in claim 7 wherein some of said projections are elongated with an arcuate configuration with some of the edges of said projections being coextensive with the edge of said valve body.
Claim 10
Dependent Claim
17 words
The apparatus as defined in claim 1 wherein said valve member is composed of a rubber composition.
Claim 11
Dependent Claim
46 words
The apparatus as defined in claim 3 wherein said tubular member defining said outlet orifice forms a Y-type tubular junction to which is attached a needle assembly at one end, and a solution container, drip chamber and entry site for a fluid at the opposite end.
Claim 12
Dependent Claim
17 words
The apparatus as defined in claim 10 wherein said entry site is composed of a reseal device.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |