Patent US3351049A successfully refreshed from Google Patents.
US3351049A
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Therapeutic metal seed containing within a radioactive isotope disposed on a carrier and method of manufacture
Assignee: HAZLETON NUCLEAR SCIENCE CORP
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Filing: 1965-04-12
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Granted: 1967-11-07
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Donald C Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:57
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1027; A61K; A61K51/00; A61K51/12; A61K51/1282; A61M; A61M31/00; G; G21; G21F; G21F5/00; G21F5/015; A61N2005/1019; A61N2005/1024
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
175 words
A RADIOACTIVE SEED FOR USE IN RADIATION THERAPY OF TISSUE COMPRISING A SEALED CONTAINER HAVING AN ELONGATE CAVITY THEREIN AND CONSTRUCTED WITH WALLS OF SUBSTANTIALLY UNIFORM THICKNESS, A THERAPEUTIC AMOUNT OF SOFT X-RAY EMANATING RADIOISOTOPE DISPOSED WITHIN SAID CAVITY, SAID SOFT X-RAY EMANATING ISOTOPE HAVING A CHARACTERISTIC RADIATION SUBSTANTIALLY ALL OF WHICH LIES BETWEEN ABOUT 20 KEV. AND 100 KEV. AND BEING ESSENTIALLY FREE FROM ALPHA AND BETA RADIATIONS AND HIGHER ENERGY X-RAY AND GAMMA RADIATIONS, SAID ISOTOPE HAVING A HALF-LIFE FROM ABOUT 8 TO 100 DAYS, AND MEANS DISPOSED WITHIN SAID CAVITY FOR MAINTAING SAID RADIOISOTOPE IN A SUBSTANTIALLY UNIFORM DISTRIBUTION ALONG THE LENGTH OF SAID CAVIT, SAID LAST NAMED MEANS BEING MADE OF A MATERIAL SELECTED TO HAVE LOW ABSORPTION FOR SOFT X-RAY TO THEREBY MINIMIZE INTERNAL ABSORPTION, SAID CONTAINER INCLUDING WALLS BEING MADE OF A METAL SELECTED TO HAVE A RELATIVELY LOW ATOMIC NUMBER TO THEREBY MINIMIZE THE ABSORPTION OF SOFT X-RAYS WHILE COMPLETELY CONTAINING THE ISOTOPE, SAID METAL BEING FURTHER SELECTED TO BE NONTOXIC AND NONSOLUBLE IN THE TISSUE BEING TREATED.
Claim 2
Dependent Claim
175 words
A RADIOACTIVE SEED FOR USE IN RADIATION THERAPY OF TISSUE COMPRISING A SEALED CONTAINER HAVING AN ELONGATE CAVITY THEREIN AND CONSTRUCTED WITH WALLS OF SUBSTANTIALLY UNIFORM THICKNESS, A THERAPEUTIC AMOUNT OF SOFT X-RAY EMANATING RADIOISOTOPE DISPOSED WITHIN SAID CAVITY, SAID SOFT X-RAY EMANATING ISOTOPE HAVING A CHARACTERISTIC RADIATION SUBSTANTIALLY ALL OF WHICH LIES BETWEEN ABOUT 20 KEV. AND 100 KEV. AND BEING ESSENTIALLY FREE FROM ALPHA AND BETA RADIATIONS AND HIGHER ENERGY X-RAY AND GAMMA RADIATIONS, SAID ISOTOPE HAVING A HALF-LIFE FROM ABOUT 8 TO 100 DAYS, AND MEANS DISPOSED WITHIN SAID CAVITY FOR MAINTAING SAID RADIOISOTOPE IN A SUBSTANTIALLY UNIFORM DISTRIBUTION ALONG THE LENGTH OF SAID CAVIT, SAID LAST NAMED MEANS BEING MADE OF A MATERIAL SELECTED TO HAVE LOW ABSORPTION FOR SOFT X-RAY TO THEREBY MINIMIZE INTERNAL ABSORPTION, SAID CONTAINER INCLUDING WALLS BEING MADE OF A METAL SELECTED TO HAVE A RELATIVELY LOW ATOMIC NUMBER TO THEREBY MINIMIZE THE ABSORPTION OF SOFT X-RAYS WHILE COMPLETELY CONTAINING THE ISOTOPE, SAID METAL BEING FURTHER SELECTED TO BE NONTOXIC AND NONSOLUBLE IN THE TISSUE BEING TREATED.
Claim 3
Independent Claim
60 words
A METHOD FRO MAKING A THERAPEUTICALLY RADIOACTIVE SEED COMPRISING SOAKING A NYLON CARRIER BODY OF AN ORGANIC POLYMER IS A SOLUTION CONTAINING THE RADIOACTIVE IODINE INSOTOPE I125 SO THAT SAID BODY CONTAINS A THERAPEUTIC AMOUNT OF THE I125 THEN PLACING SAID BODY AXIALLY INSIDE OF A STAINLESS STEEL TUBE, AND FUSING THE ENDS OF SAID TUBE TO SEAL THE SAME.
Claim 4
Independent Claim
60 words
A METHOD FRO MAKING A THERAPEUTICALLY RADIOACTIVE SEED COMPRISING SOAKING A NYLON CARRIER BODY OF AN ORGANIC POLYMER IS A SOLUTION CONTAINING THE RADIOACTIVE IODINE INSOTOPE I125 SO THAT SAID BODY CONTAINS A THERAPEUTIC AMOUNT OF THE I125 THEN PLACING SAID BODY AXIALLY INSIDE OF A STAINLESS STEEL TUBE, AND FUSING THE ENDS OF SAID TUBE TO SEAL THE SAME.
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) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |