US3729098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating blood
Assignee: Individual
•
Filing: 1971-02-08
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Granted: 1973-04-24
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Expires: 1991-02-08
Abstract
Abstract Device for treating blood comprising an elongated tubular member of semi-permeable membrane defining a blood flow path, a pair of membrane supports extending adjacent the path on opposite sides of the membrane, each support having a series of protuberances extending longitudinally of the support and spaced across the width of the support, the protuberances of one support being spaced between and overlapping the protuberances of the other support to cause the tubular member to assume a zig-zag form across its width, the supports and the tubular member defining a multiplicity of flow channels outside the tubular member and extending along the path; blood inlet and outlet members adjacent opposite ends of the tubular member and communicating exclusively with the interior thereof; and treatment fluid inlet and outlet members adjacent opposite ends of the tubular member and communicating exclusively with the exterior thereof.
Inventors
- 👤 J Serur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:27
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; A; A61; A61M; A61M1/00; A61M1/14; A61M1/16; A61M1/1621; A61M1/1631; A61M1/1654; A61M1/1656; A61M1/1668; B01D63/00; B01D63/06; B01D63/068
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
175 words
A device for treating blood, comprising an elongated tubular member of semi-permeable membrane defining a blood flow path; a pair of membrane supports extending adjacent said path on opposite sides of said membrane, each said support having a series of protuberances extending longitudinally of said support and path and spaced across the width of said support and path, said protuberances of one said support being spaced between and overlapping said protuberances of the other said support to cause said tubular member to assume a zig-zag form across its width, said supports and said tubular member defining a multiplicity of flow channels outside said tubular member and extending along said path, said protuberances of said respective supports overlapping sufficiently to pinch off said tubular member inco a plurality of separate blood flow channels along said path; blood inlet and outlet members adjacent opposite ends of said tubular member and communicating exclusively with the interior thereof; and treatment fluid inlet and outlet members adjacent opposite ends of said tubular member and communicating exclusively with the exterior thereof.
Claim 2
Independent Claim
175 words
A device for treating blood, comprising an elongated tubular member of semi-permeable membrane defining a blood flow path; a pair of membrane supports extending adjacent said path on opposite sides of said membrane, each said support having a series of protuberances extending longitudinally of said support and path and spaced across the width of said support and path, said protuberances of one said support being spaced between and overlapping said protuberances of the other said support to cause said tubular member to assume a zig-zag form across its width, said supports and said tubular member defining a multiplicity of flow channels outside said tubular member and extending along said path, said protuberances of said respective supports overlapping sufficiently to pinch off said tubular member inco a plurality of separate blood flow channels along said path; blood inlet and outlet members adjacent opposite ends of said tubular member and communicating exclusively with the interior thereof; and treatment fluid inlet and outlet members adjacent opposite ends of said tubular member and communicating exclusively with the exterior thereof.
Claim 3
Dependent Claim
21 words
The device of claim 1 wherein each said support comprises a flat sheet from which protrude a series of thin ribs.
Claim 4
Dependent Claim
35 words
The device of claim 2 wherein said supports are flexible plastic, whereby the device may assume a spiral form having a relatively long blood flow path in a dev ice of relatively small external dimensions.
Claim 5
Dependent Claim
18 words
The device of claim 1 wherein said inlet and outlet members comprise tubes extending laterally of said path.
Claim 6
Dependent Claim
33 words
The device of claim 1 further comprising a rigid gravity fed plastic mixer having inlets for concentrated dialyzer fluid and water, respectively, and an outlet connected to a said treatment fluid inlet member.
Claim 7
Independent Claim
167 words
A device for treating blood, comprising an elongated tubular member of semi-permeable membrane defining a blood flow path; a pair of membrane supports extending adjacent said path on opposite sides of said membrane, each said support having a series of protuberances extending longitudinally of said support and spaced across the width of said support, said protuberances of one said support being spaced between and overlapping said protuberances of the other of said support to cause said tubular member to assume a zig-zag form across its width, said supports and said tubular member defining a multiplicity of flow channels outside said tubular member and extending along said path; blood inlet andoutlet members adjacent opposite ends of said tubular member and communicating exclusively with the interior thereof; and treatment fluid inlet and outlet members adjacent opposite ends of said tubular member and communicating exclusively with the exterior thereof; said inlet and outlet members comprising tubes extending laterally of said path; said blood inlet and outlet members comprising corrugated tubes.
Claim 8
Independent Claim
167 words
A device for treating blood, comprising an elongated tubular member of semi-permeable membrane defining a blood flow path; a pair of membrane supports extending adjacent said path on opposite sides of said membrane, each said support having a series of protuberances extending longitudinally of said support and spaced across the width of said support, said protuberances of one said support being spaced between and overlapping said protuberances of the other of said support to cause said tubular member to assume a zig-zag form across its width, said supports and said tubular member defining a multiplicity of flow channels outside said tubular member and extending along said path; blood inlet andoutlet members adjacent opposite ends of said tubular member and communicating exclusively with the interior thereof; and treatment fluid inlet and outlet members adjacent opposite ends of said tubular member and communicating exclusively with the exterior thereof; said inlet and outlet members comprising tubes extending laterally of said path; said blood inlet and outlet members comprising corrugated tubes.
Claim 9
Dependent Claim
49 words
The device of claim 6 wherein said corrugated tubes extend between wedge shaped members, said wedge shaped members in turn being between said supports and having grooves to receive said protuberances, said wedge shaped members having recesses adjacent said supports into which treatment fluid inlet and outlet tubes extend.
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |