Patent US2321211A successfully refreshed from Google Patents.
US4021353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat profile filter
Assignee: B Braun Medical Inc
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Filing: 1975-11-20
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Granted: 1977-05-03
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Expires: 1995-11-20
Abstract
Abstract A flat profile filter for IV sets and the like, includes an elongate, flat housing having a filter supporting frame therein defining at least one longitudinally extending, laterally facing opening of greater size than could be accommodated transversely in the housing, and a filter element secured on the frame in spanning relationship to the opening.
Inventors
- 👤 Kenneth Raines
- 👤 George K. Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/165
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
A flat profile filter for IV sets and the like, comprising: a frame having an inlet end with an inlet opening therethrough and an elongate, forwardly projecting filter securing portion having at least one longitudinally extending, laterally facing opening therein, bounded by a substantially flat, planar, filter attaching surface; a flat, planar sub-micron filter element secured at a peripheral edge thereof to the filter attaching surface in spanning relation to the opening, and disposed to one side of the axis of the inlet opening; and a housing secured at one end thereof to the frame and extending in spaced, enclosing relationship to the forwardly projecting portion of the frame and to the filter element, said housing having an outlet opening at its other end for flow of filtered fluid from the housing, means on said housing other end for attachment of a cannula thereto, and said housing defining a low profile hand grip means to facilitate manipulation thereof and to enable said flat profile filter to be easily attached to a patient or the like, said filter element separating the inlet opening from the outlet opening.
Claim 2
Dependent Claim
186 words
A flat profile filter for IV sets and the like, comprising: a frame having an inlet end with an inlet opening therethrough and an elongate, forwardly projecting filter securing portion having at least one longitudinally extending, laterally facing opening therein, bounded by a substantially flat, planar, filter attaching surface; a flat, planar sub-micron filter element secured at a peripheral edge thereof to the filter attaching surface in spanning relation to the opening, and disposed to one side of the axis of the inlet opening; and a housing secured at one end thereof to the frame and extending in spaced, enclosing relationship to the forwardly projecting portion of the frame and to the filter element, said housing having an outlet opening at its other end for flow of filtered fluid from the housing, means on said housing other end for attachment of a cannula thereto, and said housing defining a low profile hand grip means to facilitate manipulation thereof and to enable said flat profile filter to be easily attached to a patient or the like, said filter element separating the inlet opening from the outlet opening.
Claim 3
Dependent Claim
43 words
A filter as in claim 1, wherein the filter securing portion is generally trough shaped in configuration and comprises a longitudinally extending bottom wall having upstanding side walls and an end wall, the side walls and end wall defining said laterally facing opening.
Claim 4
Dependent Claim
20 words
A filter as in claim 2, wherein said filter securing portion is integral with the inlet end of the frame.
Claim 5
Dependent Claim
48 words
A filter as in claim 1, wherein the filter securing portion comprises a longitudinally extending stirrup shaped frame member having oppositely facing filter attaching surfaces thereon, and a pair of substantially identical spaced apart filter elements secured to the filter securing portion at the oppositely facing surfaces thereof.
Claim 6
Dependent Claim
23 words
A filter as in claim 1, wherein the laterally facing opening has a size greater than could be accommodated transversely in the housing.
Claim 7
Dependent Claim
29 words
A filter as in claim 1, wherein the frame has two oppositely facing openings therein; and a filter element secured to the frame in spanning relation to each opening.
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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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |