US4020351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generator system
Assignee: CINTICHEM Inc
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Filing: 1975-06-16
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Granted: 1977-04-26
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Expires: 1995-06-16
Abstract
Abstract A system is provided for the production of sterile, non-pyrogenic isotonic solutions of sodium pertechnetate. The system is comprised of a portable apparatus having contained in one unit a shielded column containing molybdenum-99 from which the technetium 99m is eluted, a reservoir of sterile isotonic saline solution, conduit means for transferring the solution to and from the column and dispensing the eluted radioisotope into a shielded vial from which the physician can extract the required amount.
Inventors
- 👤 Wayne Joseph Gemmill, Sr.
- 👤 Frank Ernest Cerone, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:19
CPC Classifications
G; G21; G21G; G21G1/00; G21G1/04; G21G1/0005
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
219 words
A self-contained, portable system for dispensing sterile, non-pyrogenic, isotonic solutions containing technetium-99m, which system is comprised of, in combination: 1. A housing fitted with carrying means, and having contained within said housing: a. A radioisotope generator having disposed therein molybdenum-99, said generator being contained within a shielded container having a bottom portion in which is disposed said generator, and a top portion which is in engagement with said bottom portion, said bottom portion having female channel means on its top surface for ingress and egress of conduit means which carry eluant to said generator and eluate from said generator, said top portion having male protruding means on its bottom surface which engage said channel means to further shield said conduit means, the outermost ends of said top portion and said bottom portion being tapered to a lesser diameter than at said point wherein said top and bottom portions are in engagement, b. A reservoir of eluant disposed next to said shielded container and having disposed thereon a sterile, one-way check valve communicating to the atmosphere, c. First conduit means communicating from said reservoir through said female channel means and into one end of said generator, second conduit means communicating from the other end of said generator and through said female channel means to the exterior of said housing, 2.
Claim 2
Dependent Claim
219 words
A self-contained, portable system for dispensing sterile, non-pyrogenic, isotonic solutions containing technetium-99m, which system is comprised of, in combination: 1. A housing fitted with carrying means, and having contained within said housing: a. A radioisotope generator having disposed therein molybdenum-99, said generator being contained within a shielded container having a bottom portion in which is disposed said generator, and a top portion which is in engagement with said bottom portion, said bottom portion having female channel means on its top surface for ingress and egress of conduit means which carry eluant to said generator and eluate from said generator, said top portion having male protruding means on its bottom surface which engage said channel means to further shield said conduit means, the outermost ends of said top portion and said bottom portion being tapered to a lesser diameter than at said point wherein said top and bottom portions are in engagement, b. A reservoir of eluant disposed next to said shielded container and having disposed thereon a sterile, one-way check valve communicating to the atmosphere, c. First conduit means communicating from said reservoir through said female channel means and into one end of said generator, second conduit means communicating from the other end of said generator and through said female channel means to the exterior of said housing, 2.
Claim 3
Dependent Claim
46 words
A horizontal shelf traversing the front exterior of said housing, a portion of which is shielded by movable exterior shielding means, 3. A shielded elution vial into which said eluate is dispensed, and 4. Filter means disposed at a point between said vial and said second
Claim 4
Dependent Claim
46 words
A horizontal shelf traversing the front exterior of said housing, a portion of which is shielded by movable exterior shielding means, 3. A shielded elution vial into which said eluate is dispensed, and 4. Filter means disposed at a point between said vial and said second
Claim 5
Dependent Claim
23 words
conduit means. 2. The system of claim 1 wherein the upper edges of said housing are flanged outwardly to provide said carrying means.
Claim 6
Dependent Claim
24 words
The system of claim 1 wherein said shielded container and said eluant reservoir are fitted with means to facilitate removing them from said housing.
Claim 7
Dependent Claim
17 words
The system of claim 1 wherein said molybdenum-99m is contained on an alumina substrate in said generator.
Claim 8
Dependent Claim
12 words
The system of claim 1 wherein said molybdenum-99 is fission product molybdenum-99.
Claim 9
Dependent Claim
13 words
The system of claim 1 wherein said shielded container is comprised of lead.
Claim 10
Dependent Claim
11 words
The system of claim 1 wherein eluant is isotonic saline solution.
Claim 11
Dependent Claim
14 words
The system of claim 1 wherein said conduit means are comprised of plastic tubing.
Claim 12
Dependent Claim
14 words
The system of claim 1 wherein said conduit means are connected by sterile couplings.
Claim 13
Dependent Claim
13 words
The system of claim 1 wherein said filter means is a MILLIPORE filter.
Claim 14
Dependent Claim
18 words
The system of claim 1 wherein said generator, eluant reservoir and elution vial all have sterile, piercable septa.
Claim 15
Dependent Claim
26 words
The system of claim 11 wherein said conduit means are connected to said generator, eluant reservoir and elution vial by sterile needles which pierce said septa.
Claim 16
Dependent Claim
36 words
A process for the preparation of a sterile, non-pyrogenic isotonic solution containing technetium-99m which comprises dispensing said solution from the system of claim 1 by attaching to said second conduit means thereof, an evacuated elution vial.
References Cited (Backward Citations)
US3655981A
Cited
US3774035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-25 | 1980-10-25 | 1981-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-25 | 1984-10-25 | 1985-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-25 | 1988-10-25 | 1989-04-26 | $7700.00 | Window Closed / Lapsed |