US3976576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialyzer cartridge
Assignee: University of Utah
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Filing: 1975-06-12
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Granted: 1976-08-24
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Expires: 1995-06-12
Abstract
Abstract A dialyzer cartridge includes a resilient gasket defining a central hollow area, and first and second cross members affixed in and extending between the interior side walls of the gasket to divide the hollow area into first, second and third portions. The ends of a plurality of hollow fibers are embedded in respective cross members to extend across the second portion of the hollow between the first and third portions. A first fluid is introduced into the first portion to be transported through the fibers to the third portion and a second fluid is introduced into the second portion to flow about the fibers and thereby facilitate the process of dialysis between the interior and exterior of the fibers. The second portion of the hollow is sealed from the first and third portions by a pair of plates secured together with the gasket sandwiched therebetween.
Inventors
- 👤 Stephen C. Jacobsen
- 👤 Homer R. Smith
- 👤 Tawny R. Koncher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:38
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/02; B01D63/026; B01D63/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
188 words
A dialyzer cartridge comprising a gasket member defining a hollow, first and second cross members affixed in and extending between the side walls of the gasket member to divide the hollow into first, second and third portions, said gasket member and cross members being constructed of a resilient material, membrane means for carrying fluid, said membrane means being embedded in the cross members to extend therebetween across the second portion of the hollow to provide a passageway for carrying the fluid between the first and third portion of the hollow, a pair of plates for securing the gasket member therebetween, the gasket member, cross members and plates defining a substantially planar profile, means for urging the two plates together to compress the gasket member and cross members therebetween and to press the cross member material against the membrane means to thereby seal the first and third portions from the second portion, means for introducing fluid into the first portion and to flow through the membrane means to the third portion, means for introducing fluid into the second portion to flow about the exterior surface of the membrane means.
Claim 2
Dependent Claim
188 words
A dialyzer cartridge comprising a gasket member defining a hollow, first and second cross members affixed in and extending between the side walls of the gasket member to divide the hollow into first, second and third portions, said gasket member and cross members being constructed of a resilient material, membrane means for carrying fluid, said membrane means being embedded in the cross members to extend therebetween across the second portion of the hollow to provide a passageway for carrying the fluid between the first and third portion of the hollow, a pair of plates for securing the gasket member therebetween, the gasket member, cross members and plates defining a substantially planar profile, means for urging the two plates together to compress the gasket member and cross members therebetween and to press the cross member material against the membrane means to thereby seal the first and third portions from the second portion, means for introducing fluid into the first portion and to flow through the membrane means to the third portion, means for introducing fluid into the second portion to flow about the exterior surface of the membrane means.
Claim 3
Dependent Claim
19 words
A dialyzer cartridge as in claim 1 wherein said gasket member and cross members are composed of silicone rubber.
Claim 4
Dependent Claim
18 words
A dialyzer cartridge as in claim 1 wherein said gasket member and cross members are composed of polymethylmethacralate.
Claim 5
Dependent Claim
101 words
A dialyzer cartridge as in claim 1 wherein at least one of said plates has an aperture therein through which fluid may be introduced into the first portion of the hollow, wherein at least one of said plates has an aperture therein through which fluid may be received from the third portion of the hollow, wherein at least one of said plates has an aperture therein through which fluid may be introduced into the second portion of the hollow, and wherein at least one of said plates has an aperture therein through which fluid may be received from the second portion.
Claim 6
Dependent Claim
81 words
A dialyzer cartridge as in claim 1 wherein the side walls of the gasket member have a first opening through which fluid may be introduced into the first portion of the hollow, a second opening through which fluid may be received from the third portion of the hollow, a third opening through which fluid may be introduced into the second portion of the hollow, and a fourth opening through which fluid may be received from the second portion of the hollow.
Claim 7
Dependent Claim
44 words
A dialyzer cartridge as in claim 1 wherein said membrane means includes a plurality of hollow fibers the ends of which are embedded in respective cross members to extend from the first portion to the third portion of the hollow for carrying fluid therebetween.
Claim 8
Dependent Claim
67 words
A dialyzer cartridge as in claim 1 further comprising means dividing the first portion of the hollow into first and second sections, means for introducing fluid into the first section, said fluid flowing from the first section through the membrane means to the third portion of the hollow and then through the membrane means to the second section, and means for receiving fluid from the second section.
Claim 9
Dependent Claim
81 words
A dialyzer cartridge as in claim 7 wherein at least one of said plates has an aperture therein contiguous with the first portion of the hollow, wherein at least one of the plates has an aperture therein contiguous with the second portion of the hollow, and wherein said introducing means comprise a pair of conduits attached to the plates over respective apertures to enable the flow of fluid through the conduits and the apertures to the respective portions of the hollow.
Claim 10
Dependent Claim
196 words
A dialyzer cartridge comprising a resilient gasket member defining a hollow, first and second resilient cross members affixed in and extending between interior side walls of the gasket member to divide the hollow into first, second and third portions, a plurality of hollow fibers embedded in and extending between the cross members across the second portion, the ends of the fibers extending through respective cross members into the first and third portions of the hollow to thereby provide passages between the first and third portions through which fluid may be carried, a pair of plates, means for securing one of the plates in engagement with the top surface of the gasket member and the other of the plates in engagement with the bottom surface of the gasket member to thereby compress the gasket member between the plates and the cross members tightly about the fibers to seal the first and third portions of the hollow from the second portion, means for introducing fluid into the first portion of the hollow to flow through the fibers to the third portion, and means for introducing fluid into the second portion of the hollow to flow about the fibers.
Claim 11
Dependent Claim
196 words
A dialyzer cartridge comprising a resilient gasket member defining a hollow, first and second resilient cross members affixed in and extending between interior side walls of the gasket member to divide the hollow into first, second and third portions, a plurality of hollow fibers embedded in and extending between the cross members across the second portion, the ends of the fibers extending through respective cross members into the first and third portions of the hollow to thereby provide passages between the first and third portions through which fluid may be carried, a pair of plates, means for securing one of the plates in engagement with the top surface of the gasket member and the other of the plates in engagement with the bottom surface of the gasket member to thereby compress the gasket member between the plates and the cross members tightly about the fibers to seal the first and third portions of the hollow from the second portion, means for introducing fluid into the first portion of the hollow to flow through the fibers to the third portion, and means for introducing fluid into the second portion of the hollow to flow about the fibers.
Claim 12
Independent Claim
122 words
A method of constructing a dialyzer cartridge including providing a resilient gasket member which defines a hollow therein, providing resilient first and second cross members affixed in and extending between the side walls of the gasket member to divide the hollow into first, second and third portions, embedding a plurality of hollow fibers in the first and second cross members to extend therebetween across the second portion of the hollow to thereby provide passageways for carrying fluid between the first and third portions of the hollow, and compressing the gasket member and cross members between a pair of plates to seal the first and third portions from the second portion and to compress the cross member material against and about the fibers.
Claim 13
Independent Claim
122 words
A method of constructing a dialyzer cartridge including providing a resilient gasket member which defines a hollow therein, providing resilient first and second cross members affixed in and extending between the side walls of the gasket member to divide the hollow into first, second and third portions, embedding a plurality of hollow fibers in the first and second cross members to extend therebetween across the second portion of the hollow to thereby provide passageways for carrying fluid between the first and third portions of the hollow, and compressing the gasket member and cross members between a pair of plates to seal the first and third portions from the second portion and to compress the cross member material against and about the fibers.
References Cited (Backward Citations)
US3746175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |