US4039835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reloadable radioactive generator system
Assignee: Individual
•
Filing: 1976-03-12
•
Granted: 1977-08-02
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Expires: 1996-03-12
Abstract
Abstract A generator system that can be reloaded with an elutable radioactive material, such as 99 molybdenum, a multiple number of times is described. The system basically comprises a column filled with alumina, a loading vial containing a predetermined amount of the elutable radioactive material, and a rinsing vial containing a sterile solution. The two vials are connected by a conduit so that when communication is achieved between the column and loading vial and an evacuated vial is placed in communication with the bottom of the column, the predetermined amount of the radioactive material in the loading vial will be transferred to the column. The procedure can be repeated as the elutable material in the column is dissipated.
Inventors
- 👤 Lelio G. Colombetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:24
CPC Classifications
G; G21; G21G; G21G1/00; G21G1/04; G21G1/0005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
146 words
A generator system that can be reloaded with an elutable radioactive material which can be used for nuclear medicine and which comprises: an elongated column having a chromatographic bed of alumina therein and sealed at the top and bottom thereof; transfer means arranged at the top and bottom of the column for communication with separate containers; a first container having a predetermined amount of elutable radioactive material therein and adapted for attachment to the transfer means arranged at the top of the column; a second container having a rinsing solution therein; and conduit means connecting the first and second containers whereby the elutable radioactive material and rinsing solution will be transferred to the column when the first container is attached to the transfer means at the top of the column and an evacuated container is attached to the transfer means at the bottom of the column.
Claim 2
Dependent Claim
146 words
A generator system that can be reloaded with an elutable radioactive material which can be used for nuclear medicine and which comprises: an elongated column having a chromatographic bed of alumina therein and sealed at the top and bottom thereof; transfer means arranged at the top and bottom of the column for communication with separate containers; a first container having a predetermined amount of elutable radioactive material therein and adapted for attachment to the transfer means arranged at the top of the column; a second container having a rinsing solution therein; and conduit means connecting the first and second containers whereby the elutable radioactive material and rinsing solution will be transferred to the column when the first container is attached to the transfer means at the top of the column and an evacuated container is attached to the transfer means at the bottom of the column.
Claim 3
Dependent Claim
31 words
The generator system of claim 1 wherein the transfer means arranged at the top of the column comprises a needle projecting outwardly through the seal thereof and communicating with the column.
Claim 4
Dependent Claim
26 words
The generator system of claim 2 wherein the transfer means arranged at the bottom of the column comprises a needle arranged for communication with the column.
Claim 5
Dependent Claim
14 words
The generator system of claim 3 wherein the elutable radioactive material contains molybdenum 99.
Claim 6
Dependent Claim
13 words
The generator system of claim 3 wherein the second container includes venting means.
Claim 7
Dependent Claim
24 words
The generator system of claim 5 wherein the chromatographic bed of alumina is retained between two spaced apart porous disks fitted within the column.
Claim 8
Dependent Claim
20 words
The generator system of claim 6 wherein a filter is interposed between the bottom of the column and the needle.
Claim 9
Independent Claim
139 words
A method of reloading a generator system comprising an elongated column containing a chromatographic bed of alumina therein and including transfer means at the top and bottom of the column for communication with separate containers, said method comprising the steps of: providing a first container having a predetermined amount of elutable radioactive material therein and adapted for attachment to the transfer means arranged at the top of the column; providing a second container having a rinsing solution and conduit means connecting the first and second containers; attaching the first container to the transfer means arranged to the top of the column to provide communication between the column and the first container; and attaching an evacuated container to the transfer means at the bottom of the container, whereby the elutable radioactive material and rinsing solution are transferred into the column.
Claim 10
Independent Claim
139 words
A method of reloading a generator system comprising an elongated column containing a chromatographic bed of alumina therein and including transfer means at the top and bottom of the column for communication with separate containers, said method comprising the steps of: providing a first container having a predetermined amount of elutable radioactive material therein and adapted for attachment to the transfer means arranged at the top of the column; providing a second container having a rinsing solution and conduit means connecting the first and second containers; attaching the first container to the transfer means arranged to the top of the column to provide communication between the column and the first container; and attaching an evacuated container to the transfer means at the bottom of the container, whereby the elutable radioactive material and rinsing solution are transferred into the column.
Claim 11
Dependent Claim
13 words
The method of claim 8 wherein the elutable radioactive material contains molybdenum 99.
Claim 12
Dependent Claim
12 words
The method of claim 9 wherein the rinsing solution comprises saline solution.
References Cited (Backward Citations)
US3576998A
Cited
US3774035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |