US3683183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A flow-through irradiator for the extra corporeal irradiation of fluid
Assignee: Radiation Machinery Corp
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Filing: 1969-06-04
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Granted: 1972-08-08
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Expires: 1989-06-04
Abstract
Abstract A flow-through irradiator for fluid comprising a radiation absorbing biologicaL shield housing having a radioactive source therein, a non-linear conduit traversing the shield housing for passing a fluid therethrough in radiation receiving relation to the radioactive source, and a flexible radiation absorbing means movably interposed between the radioactive source and fluid to be irradiated to selectively vary the radiation dose rate received by fluid passing through the conduit.
Inventors
- 👤 Thomas A Vizzini
- 👤 Felix R Grat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:57
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3681; G; G21; G21F; G21F5/00; G21F5/015; G21K; G21K5/00; G21K5/02; A61M2205/00; A61M2205/05; A61M2205/051
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
144 words
A flow-through irradiator for the extracorporeal irradiation of fluid which comprises a primary radiation shield means housing a radiation emitter source material, a primary flow tube means fixedly encased in said primary shield and traversing said primary shield for the through flow of fluid to be irradiated, said primary flow tube means having tortuous end portions within said primary shield, said radiation emitter source material portions encased in said primary fixed shield in coextensive contiguous fixed relation to a portion of said primary flow tube intermediate said tortuous end portions, a secondary flexible radiation absorbing shield member slidably received within and extending exteriorly of said primary flow tube for selective operation from the exterior of said primary shield for selectively precluding and varying the amount of radiation passing into said primary flow tube, wherein said flexible radiator absorbing shield member comprises a helical spring.
Claim 2
Dependent Claim
144 words
A flow-through irradiator for the extracorporeal irradiation of fluid which comprises a primary radiation shield means housing a radiation emitter source material, a primary flow tube means fixedly encased in said primary shield and traversing said primary shield for the through flow of fluid to be irradiated, said primary flow tube means having tortuous end portions within said primary shield, said radiation emitter source material portions encased in said primary fixed shield in coextensive contiguous fixed relation to a portion of said primary flow tube intermediate said tortuous end portions, a secondary flexible radiation absorbing shield member slidably received within and extending exteriorly of said primary flow tube for selective operation from the exterior of said primary shield for selectively precluding and varying the amount of radiation passing into said primary flow tube, wherein said flexible radiator absorbing shield member comprises a helical spring.
Claim 3
Dependent Claim
23 words
The combination of claim 1 wherein said primary flow tube means comprises a tube having a linear intermediate portion and sinuous end portions.
Claim 4
Dependent Claim
29 words
The combination of claim 1 wherein said radiation emitter material comprises a beta ray source having a tubular configuration positioned in encompassing relation to said primary flow tube means.
Claim 5
Dependent Claim
39 words
The combination of claim 2 wherein said radiation emitter material comprises a beta ray source having a tubular configuration positioned in encompassing relation to at least a portion of said linear intermediate portion of said primary flow tube means.
Claim 6
Dependent Claim
18 words
The combination of claim 1 wherein said helical spring formed of a member having a square cross-sectional configuration.
Claim 7
Dependent Claim
13 words
The combination of claim 1 wherein said radiation emitter material comprises strontium 90.
Claim 8
Dependent Claim
33 words
The combination of claim 1 wherein said means for reciprocating said flexible radiation absorbing member includes a permutation key operated lock means for releasably securing said flexible member in a preselected attenuating position.
Claim 9
Dependent Claim
146 words
A flow-through beta ray irradiator for the extracorporeal irradiation of body fluid which comprises a primary radiation shield means housing a beta ray emitter source material, a primary flow tube means fixedly encased in said primary shield and traversing said primary shield for the through flow of fluid to be irradiated, said primary flow tube means having tortuous end portions within said primary shield, said radiation emitter source material encased in said primary shield in coextensive contiguous fixed relation to a portion of said primary flow tube intermediate said tortuous end portions, a secondary flexible radiation absorbing shield member slidably received within and extending exteriorly of said primary flow tube for selective operation from the exterior of said primary shield for selectively precluding and varying the amount of radiation passing into said primary flow tube, wherein said flexible radiator absorbing shield member comprises a helical spring.
Claim 10
Dependent Claim
146 words
A flow-through beta ray irradiator for the extracorporeal irradiation of body fluid which comprises a primary radiation shield means housing a beta ray emitter source material, a primary flow tube means fixedly encased in said primary shield and traversing said primary shield for the through flow of fluid to be irradiated, said primary flow tube means having tortuous end portions within said primary shield, said radiation emitter source material encased in said primary shield in coextensive contiguous fixed relation to a portion of said primary flow tube intermediate said tortuous end portions, a secondary flexible radiation absorbing shield member slidably received within and extending exteriorly of said primary flow tube for selective operation from the exterior of said primary shield for selectively precluding and varying the amount of radiation passing into said primary flow tube, wherein said flexible radiator absorbing shield member comprises a helical spring.
Claim 11
Dependent Claim
23 words
The combination of claim 8 wherein said primary flow tube means comprises a tube having a linear intermediate portion and sinuous end portions.
Claim 12
Dependent Claim
29 words
The combination of claim 8 wherein said radiation emitter material comprises a beta ray source having a tubular configuration positioned in encompassing relation to said primary flow tube means.
Claim 13
Dependent Claim
39 words
The combination of claim 10 wherein said radiation emitter material comprises a beta ray source having a tubular configuration positioned in encompassing relation to at least a portion of said linear intermediate portion of said primary flow tube means.
Claim 14
Dependent Claim
18 words
The combination of claim 8 wherein said helical spring formed of a member having a square cross-sectional configuration.
Claim 15
Dependent Claim
12 words
The combination of claim 8 wherein said radiation emitter material comprises strontium-90.
Claim 16
Dependent Claim
33 words
The combination of claim 8 wherein said means for reciprocating said flexible radiation absorbing member includes a permutation key operated lock means for releasably securing said flexible member in a preselected attenuating position.
References Cited (Backward Citations)
US3434467A
Cited
US3505991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |