US3801818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radioactive generator with permeable closure
Assignee: ER Squibb and Sons LLC
•
Filing: 1972-10-24
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Granted: 1974-04-02
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Expires: 1992-10-24
Abstract
Abstract A radioactive generator has silicone or neoprene closures to vent the gases released during the generation of radioactive eluate. The generator comprises a hollow, generally cylindrical body in which a column of radioactive material is contained, and the ends of which are closed by silicone or neoprene stoppers fabricated from material such as methylvinylpolysiloxane or polychloroprene. The generator can be subjected to sterilizing procedures such as autoclaving and retain its sterile condition, while at the same time gases generated internally may be vented through the closures.
Inventors
- 👤 H Hulit
- 👤 T Czaplinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:20
CPC Classifications
G; G21; G21G; G21G4/00; G21G4/04; G21G4/06; G21G1/00; G21G1/0005
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
122 words
In a generator containing a column of sterile elutable radioactive material to be utilized for diagnosis and treatment for medical conditions, said generator of the type which comprises a hollow body closed at its top and bottom by pierceable autoclavable closures and having positioned therein and spaced from the bottom thereof a source of elutable, shortlived radioactive material, whereby a sterile eluate ready for utilization is delivered from the body, the improvement which comprises said autoclavable closures being fabricated from material which is pierceable, and gas pervious permitting the venting directly through said closures of gases formed in the generator, said closures being sufficiently dense to prevent the passage of fluid directly therethrough as well as preventing the inflow of bacteria therethrough.
Claim 2
Dependent Claim
122 words
In a generator containing a column of sterile elutable radioactive material to be utilized for diagnosis and treatment for medical conditions, said generator of the type which comprises a hollow body closed at its top and bottom by pierceable autoclavable closures and having positioned therein and spaced from the bottom thereof a source of elutable, shortlived radioactive material, whereby a sterile eluate ready for utilization is delivered from the body, the improvement which comprises said autoclavable closures being fabricated from material which is pierceable, and gas pervious permitting the venting directly through said closures of gases formed in the generator, said closures being sufficiently dense to prevent the passage of fluid directly therethrough as well as preventing the inflow of bacteria therethrough.
Claim 3
Dependent Claim
12 words
The generator of claim 1 wherein the closures are made from silicone.
Claim 4
Dependent Claim
18 words
The generator of claim 1 wherein the closures are permanently affixed to said body to seal said body.
Claim 5
Dependent Claim
12 words
The generator of claim 3 wherein the closures are fabricated from methylvinylpolysiloxane.
Claim 6
Dependent Claim
12 words
The generator of claim 1 wherein the closures are made from neoprene.
Claim 7
Dependent Claim
13 words
The generator of claim 5 wherein the pierceable closures are fabricated from polychloroprene.
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |