Patent US4509506A successfully refreshed from Google Patents.
US4509506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding device for radioactive seed
Assignee: Medi Physics Inc
•
Filing: 1981-05-11
•
Granted: 1985-04-09
•
Expires: 2001-05-11
Abstract
Abstract Radioactive seeds contained in a suture material are shielded during shipping and storage inside a curved tube of dense material having two open ends. The suture material protrudes through at least one end of the tube. Preferably, one end of the suture material has removable means for preventing the end from entering the tube prematurely, and the other end is attached to a needle. The seeds spaced from the open ends of the curved tube so as to prevent radiation from escaping from the tube.
Inventors
- 👤 David C. Windorski
- 👤 David O. Kubiatowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:02
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1007; G; G21; G21G; G21G4/00; G21G4/04; G21G4/06; G21G4/08; A61N2005/101; A61N2005/1019; A61N2005/1023; A61N2005/1092; A61N2005/1094; A61N5/1027
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A device for handling radioactive seeds comprising: a. a curved tube of dense material open at both ends, said tube having an interior diameter larger than said seeds to allow said seeds to be moved freely therein and side walls of sufficient thickness to prevent radiation from penetrating therethrough; b. a length of suture material located within said tube and not protruding through at least one of said open ends; c. removable stop means attached to at least end of said suture material for preventing said end of said suture material from entering said tube; and d. a plurality of surgically-implantable radioactive seeds within said tube arranged consecutively and spaced apart in said suture material, said seeds being spaced from said open ends so as to prevent radiation from escaping from said open ends.
Claim 2
Independent Claim
134 words
A device for handling radioactive seeds comprising: a. a curved tube of dense material open at both ends, said tube having an interior diameter larger than said seeds to allow said seeds to be moved freely therein and side walls of sufficient thickness to prevent radiation from penetrating therethrough; b. a length of suture material located within said tube and not protruding through at least one of said open ends; c. removable stop means attached to at least end of said suture material for preventing said end of said suture material from entering said tube; and d. a plurality of surgically-implantable radioactive seeds within said tube arranged consecutively and spaced apart in said suture material, said seeds being spaced from said open ends so as to prevent radiation from escaping from said open ends.
Claim 3
Independent Claim
161 words
A device for handling radioactive seeds comprising: a. a curved tube of dense material open at both ends, said tube having an interior diameter larger than said seeds to allow said seeds to be moved freely therein and side walls of sufficient thickness to prevent radiation from penetrating therethrough; b. a length of suture material located within said tube having a first end protruding through one of said open ends of said tube and a second end protruding through the other of said open ends; c. removable means attached to said first end of said suture material for preventing said first end from entering said tube; d. needle means attached to said second end of said suture material for penetrating body tissue; and e. a plurality of surgically-implantable radioactive seeds within said tube arranged consecutively and spaced apart in said suture material, said seeds being spaced from said open ends so as to prevent radiation from escaping from said open ends.
Claim 4
Independent Claim
161 words
A device for handling radioactive seeds comprising: a. a curved tube of dense material open at both ends, said tube having an interior diameter larger than said seeds to allow said seeds to be moved freely therein and side walls of sufficient thickness to prevent radiation from penetrating therethrough; b. a length of suture material located within said tube having a first end protruding through one of said open ends of said tube and a second end protruding through the other of said open ends; c. removable means attached to said first end of said suture material for preventing said first end from entering said tube; d. needle means attached to said second end of said suture material for penetrating body tissue; and e. a plurality of surgically-implantable radioactive seeds within said tube arranged consecutively and spaced apart in said suture material, said seeds being spaced from said open ends so as to prevent radiation from escaping from said open ends.
Claim 5
Dependent Claim
12 words
The device according to claim 2, wherein said tube is stainless steel.
Claim 6
Dependent Claim
20 words
The device according to claim 2, where said tube is circular in shape with said open ends opposing one another.
Claim 7
Dependent Claim
11 words
The device according to claim 2, wherein said seeds contain iodine-125.
Claim 8
Dependent Claim
12 words
The device according to claim 2, wherein said suture material is absorbable.
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) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |