US3827562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering device
Assignee: Individual
•
Filing: 1972-12-06
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Granted: 1974-08-06
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Expires: 1992-12-06
Abstract
Abstract This disclosure relates to a device for the removal of gases, particulate matter and oil primarily from blood after the treatment thereof in an artificial body device. The filter device utilizes a plurality of filter cloth layers disposed generally parallel to the path of blood flow and being supported in spaced relation and against collapse by a relatively coarse mesh arranged in layers and disposed between adjacent filter cloth layers. The device operates primarily on the principal of laminar flow of the blood through the filter cloth layers with the filter cloth being formed of a material having an affinity for the blood whereby gases or bubbles entrapped therein will be caused to be released.
Inventors
- 👤 W Esmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:29
CPC Classifications
B; B01; B01D; B01D36/00; B01D36/001; A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3627; B01D19/00; B01D19/0031; B01D24/00; B01D24/02; B01D24/04; B01D24/38; B01D24/40; B01D24/407; B01D25/00; B01D25/22; B01D25/24; B01D29/00; B01D29/01; B01D29/05; B01D35/00; A61M2206/00; A61M2206/10; A61M2206/11; A61M2206/16
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
112 words
A filter for blood and like liquids, said filter having a path of liquid flow and including a filter element formed of a plurality of first and second layers of which said first layers are each formed of fine filter cloth disposed generally parallel to said liquid flow path for the gradual filtered flow of liquid therethrough, each of said second layErs being in the form of a silicon sheet for both directing blood through said filter cloth layers and picking up silicon oil by absorption, and a coarse support mesh disposed between adjacent first and second layers and secured thereto to reinforce said first and second layers and support the same.
Claim 2
Dependent Claim
112 words
A filter for blood and like liquids, said filter having a path of liquid flow and including a filter element formed of a plurality of first and second layers of which said first layers are each formed of fine filter cloth disposed generally parallel to said liquid flow path for the gradual filtered flow of liquid therethrough, each of said second layErs being in the form of a silicon sheet for both directing blood through said filter cloth layers and picking up silicon oil by absorption, and a coarse support mesh disposed between adjacent first and second layers and secured thereto to reinforce said first and second layers and support the same.
Claim 3
Dependent Claim
17 words
The filter of claim 1 wherein said filter cloth is of the 400 filament per inch type.
Claim 4
Dependent Claim
64 words
The filter of claim 1 wherein each of said first and second layers has remote edges in the direction of liquid flow secured to a like edge of a single adjacent one of said first and second layers with said first and second layers being arranged in zig-zag relation thereby requiring all liquid passing through said filter to flow through said cloth filter layers.
Claim 5
Dependent Claim
24 words
The filter of claim 3 wherein said first and second layers and said coarse support mesh layers are elongated strips and are spirally wound.
Claim 6
Dependent Claim
41 words
The filter of claim 4 wherein said filter includes a housing supporting said filter element, said housing having an upper portion in the form of a debubbler and including means for effecting the spiral flow of liquid above said filter element.
Claim 7
Dependent Claim
46 words
The filter of claim 1 wherein each support mesh layer has one edge thereof in the direction of liquid flow positioned between sealed together edge portions of adjacent ones of said first and second layers, and the opposite edge of each support mesh layer being free.
Claim 8
Dependent Claim
23 words
The filter of claim 6 wherein each of said first and second layers is separately formed in the form of an elongated strip.
Claim 9
Dependent Claim
139 words
A filter for blood and like liquids, said filter having a path of liquid flow and including a filter element formed of first and second layers of which at least one layer is formed of fine filter cloth disposed generally parallel to said liquid flow path for the gradual filtered flow of liquid therethrough, and a coarse support mesh disposed between adjacent first and second layers and secured thereto to reinforce said first and second layers and support the same, said first and second layers being both filter cloth layers arranged in upstanding integral pairs joined by an uppermost fold, and a further narrow support mesh layer is disposed between lower edge portions of each integral pair of filter cloth layers, and the support mesh layers disposed between adjacent pairs of integrally connected filter cloth layers being accordingly foreshortened.
Claim 10
Dependent Claim
139 words
A filter for blood and like liquids, said filter having a path of liquid flow and including a filter element formed of first and second layers of which at least one layer is formed of fine filter cloth disposed generally parallel to said liquid flow path for the gradual filtered flow of liquid therethrough, and a coarse support mesh disposed between adjacent first and second layers and secured thereto to reinforce said first and second layers and support the same, said first and second layers being both filter cloth layers arranged in upstanding integral pairs joined by an uppermost fold, and a further narrow support mesh layer is disposed between lower edge portions of each integral pair of filter cloth layers, and the support mesh layers disposed between adjacent pairs of integrally connected filter cloth layers being accordingly foreshortened.
Claim 11
Dependent Claim
42 words
The filter of claim 8 wherein each support mesh layer disposed between filter cloth layers of an integrally connected pair is of a folded construction with an uppermost fold and said narrow support mesh layer being within said folded support mesh layer.
Claim 12
Dependent Claim
23 words
The filter of claim 8 wherein each pair of filter cloth layers and the support mesh layers incorporated therein are interconnected by stitching.
Claim 13
Dependent Claim
38 words
The filter of claim 8 wherein each pair of filter cloth layers and the support mesh layers incorporated therein are interconnected by stitching, spirally wound, and lower edges of adjacent filter cloth panel pairs being adhesively bonded together.
Claim 14
Dependent Claim
124 words
A filter for blood and like liquids, said filter having a path of liquid flow and including a filter element formed of first and second layers of which at least one layer is formed of fine filter cloth disposed generally parallel to said liquid flow path for the gradual filtered flow of liquid therethrough, and a coarse support mesh disposed between adjacent first and second layers and secured thereto to reinforce said first and second layers and support the same, said first and second layers being both filter cloth layers disposed generally upstanding and integrally connected by folds and are continuous, said filter cloth folds and said support mesh folds being internested, and adjacent folded support mesh layers facing and opening in opposite directions.
Claim 15
Dependent Claim
124 words
A filter for blood and like liquids, said filter having a path of liquid flow and including a filter element formed of first and second layers of which at least one layer is formed of fine filter cloth disposed generally parallel to said liquid flow path for the gradual filtered flow of liquid therethrough, and a coarse support mesh disposed between adjacent first and second layers and secured thereto to reinforce said first and second layers and support the same, said first and second layers being both filter cloth layers disposed generally upstanding and integrally connected by folds and are continuous, said filter cloth folds and said support mesh folds being internested, and adjacent folded support mesh layers facing and opening in opposite directions.
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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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |