US3650404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable dialysis apparatus
Assignee: Individual
•
Filing: 1970-02-27
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Granted: 1972-03-21
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Expires: 1990-02-27
Abstract
Abstract A dialysis device that is adapted to be disposed of after a single use. A closed cell foam core is used as a support for a dialysis membrane and may be located in a chamber associated with a reservoir also of closed cell foam, with the core occupying a major portion of the chamber. A pump circulates dialyzing fluid from the reservoir to the chamber from which the fluid overflows back into the reservoir. The use of a foam core and reservoir permits the structure to be fabricated sufficiently economically to permit it to be disposed of after a single use and the use of a closed cell structure occupying a major portion of the chamber minimizes the amount of dialyzing fluid required to perform a dialysis operation.
Inventors
- 👤 Antonio A Versaci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:25
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
In a dialyzing apparatus, the combination comprising an assembly including a lightweight core formed of a closed cell foam so as to have a substantial closed void space and a tubular dialyzing membrane wrapped about and supported by said core with the ends of said membrane terminating in conduit means for receiving and returning fluid to be subject to dialysis to and from a source of such fluid, said assembly being adapted to be received in a reservoir containing dialyzing fluid and to have the dialyzing fluid circulated about the membrane with the core occupying a substantial portion of the reservoir to minimize the quantity of dialyzing fluid required and to provide a disposable, portable dialyzing apparatus.
Claim 2
Dependent Claim
117 words
In a dialyzing apparatus, the combination comprising an assembly including a lightweight core formed of a closed cell foam so as to have a substantial closed void space and a tubular dialyzing membrane wrapped about and supported by said core with the ends of said membrane terminating in conduit means for receiving and returning fluid to be subject to dialysis to and from a source of such fluid, said assembly being adapted to be received in a reservoir containing dialyzing fluid and to have the dialyzing fluid circulated about the membrane with the core occupying a substantial portion of the reservoir to minimize the quantity of dialyzing fluid required and to provide a disposable, portable dialyzing apparatus.
Claim 3
Dependent Claim
34 words
A dialyzing apparatus according to claim 1 wherein the bottom of said core terminates in integral downwardly extending legs adapted to space said core above the bottom of a chamber containing a dialyzing fluid.
Claim 4
Dependent Claim
78 words
A dialyzing apparatus according to claim 1 wherein said core is generally cylindrical in shape and includes a pair of grooves in its cylindrical surface extending along the same to one end thereof, one end of each of said grooves terminating in a tapered blend into said cylindrical surface, said conduit means being received in said grooves and being connected to the ends of said membrane at said tapered blends, said membrane being wrapped about said cylindrical surface.
Claim 5
Dependent Claim
122 words
A dialyzing apparatus according to claim 1 wherein said core is generally cylindrical in shape, the bottom of said core terminating in downwardly extending legs adapted to space said core above the bottom of a chamber containing a dialyzing fluid, said core further including a recess in its upper end partially covered by an elongated handle member and further having a pair of grooves in its cylindrical surface extending along the same to said upper end, the lower end of each of said grooves terminating in a tapered blend into said cylindrical surface, said conduit means being received in said grooves and being connected to the ends of said membrane at said tapered ends, said membrane being wrapped about said cylindrical surface.
Claim 6
Dependent Claim
96 words
Dialyzing apparatus comprising: a reservoir for holding a dialyzing fluid, a chamber within said reservoir and defined by a portion of the bottom wall of the reservoir and an upstanding sleeve and adapted to permit a dialyzing fluid to overflow into said reservoir, a core within said chamber, a dialyzing membrane supported by said core within said chamber, conduit means associated with said membrane for passing a fluid to be subjected to dialysis to and from said membrane, and pump means for circulating a dialyzing fluid from said reservoir to said chamber and said membrane therein.
Claim 7
Dependent Claim
96 words
Dialyzing apparatus comprising: a reservoir for holding a dialyzing fluid, a chamber within said reservoir and defined by a portion of the bottom wall of the reservoir and an upstanding sleeve and adapted to permit a dialyzing fluid to overflow into said reservoir, a core within said chamber, a dialyzing membrane supported by said core within said chamber, conduit means associated with said membrane for passing a fluid to be subjected to dialysis to and from said membrane, and pump means for circulating a dialyzing fluid from said reservoir to said chamber and said membrane therein.
Claim 8
Dependent Claim
82 words
A dialyzing apparatus according to claim 5 wherein said core is formed of a closed cell foam and occupies a major portion of said chamber. 7. A dialyzing apparatus according to claim 9 wherein said core includes spacer means at its lower end to space said core and the membrane supported thereby above the bottom of said chamber, pump means operative to introduce dialyzing fluid into said chamber from the bottom thereof, and handle means formed on the top of said core.
Claim 9
Dependent Claim
62 words
Dialyzing apparatus according to claim 5 further including a fluid inlet in said portion of the bottom wall of said reservoir, and a fluid outlet in another portion of the bottom wall of the reservoir, said pump means being interposed in a fluid line between said inlet and said outlet; said reservoir further including a fluid overflow outlet above the bottom thereof.
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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |