US4323055A
Expired / Lapsed
US
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Radioactive iodine seed
Assignee: Medi Physics Inc
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Filing: 1980-04-08
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Granted: 1982-04-06
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Expires: 2000-04-08
Abstract
Abstract Improved radioactive iodine seeds are disclosed wherein the carrier for the radioisotope is a rod-like member which is detectable by X-rays and occupies a substantial portion of the space within the seed.
Inventors
- 👤 David O. Kubiatowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:31
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; G21G4/06; G21G4/08; A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1027; A61N2005/1019; A61N2005/1024
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
97 words
In a radioactive iodine seed comprising a sealed container having an elongate cavity, a therapeutic amount of radioactive iodine within said cavity and a carrier body disposed within said cavity for maintaining said radioactive iodine in a substantially uniform distribution along the length of said cavity, the improvement wherein said carrier body is an elongate rod-like member formed of silver or a silver-coated substrate which is X-ray detectable, said carrier body containing a layer of radioactive iodide formed on the surface of said carrie body, said carrier body occupying substantial portion of the space within said cavity.
Claim 2
Dependent Claim
97 words
In a radioactive iodine seed comprising a sealed container having an elongate cavity, a therapeutic amount of radioactive iodine within said cavity and a carrier body disposed within said cavity for maintaining said radioactive iodine in a substantially uniform distribution along the length of said cavity, the improvement wherein said carrier body is an elongate rod-like member formed of silver or a silver-coated substrate which is X-ray detectable, said carrier body containing a layer of radioactive iodide formed on the surface of said carrie body, said carrier body occupying substantial portion of the space within said cavity.
Claim 3
Dependent Claim
16 words
The radioactive iodine seed according to claim 1 wherein said carrier body is a silver rod.
Claim 4
Dependent Claim
20 words
The radioactive iodine seed according to claim 2 wherein said silver rod is about 0.10 to 0.70 mm in diameter.
Claim 5
Dependent Claim
18 words
The radioactive iodine seed according to claim 3 wherein said silver rod is about 3 mm in length.
Claim 6
Dependent Claim
23 words
The radioactive iodine seed according to claim 1 having radiation emission equivalent to that of between about 0.1 to 100 millicuries of radioactivity.
Claim 7
Dependent Claim
13 words
The radioactive iodine seed according to claim 1 wherein said container comprises titanium.
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) | 1985-04-05 | 1985-10-05 | 1986-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-05 | 1989-10-05 | 1990-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-05 | 1993-10-05 | 1994-04-06 | $7700.00 | Window Closed / Lapsed |