US4754745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conformable sheet material for use in brachytherapy
Assignee: BRUCE S HOROWITZ 494 NW 165TH STREET APT #C302 MIAMI FLORIDA 33167
•
Filing: 1986-07-07
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Granted: 1988-07-05
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Expires: 2006-07-07
Abstract
Abstract A delivery system for brachytherapy comprising a conformable sheet of material which is absorbable in living tissue and a plurality of radioactive seeds in a predetermined array within the sheet. In one form, the sheet is a continuous flexible film in which the seeds are positioned in a predetermined array and which film can be sutured or stapled in place on the surface of a tumor area.
Inventors
- 👤 Bruce S. Horowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:29
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1028; A61N5/1029; A61N5/1007; A61N2005/1012
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
A delivery system for brachytherapy comprising: a conformable continuous sheet made of an organic plastic material which is absorbable in living tissue, said sheet being flexible in all directions such that it can be conformed to a non-planar surface to be treated, and a plurality of spaced radioactive seeds, each seed being non-absorbable, being fixed by, and completely encapsulated within said sheet material to form a predetermined fixed, two dimensional array of discrete, spaced, predetermined distribution of radioactive seeds such that the sheet can be conformed to a surface to be treated and sutured in place.
Claim 2
Dependent Claim
96 words
A delivery system for brachytherapy comprising: a conformable continuous sheet made of an organic plastic material which is absorbable in living tissue, said sheet being flexible in all directions such that it can be conformed to a non-planar surface to be treated, and a plurality of spaced radioactive seeds, each seed being non-absorbable, being fixed by, and completely encapsulated within said sheet material to form a predetermined fixed, two dimensional array of discrete, spaced, predetermined distribution of radioactive seeds such that the sheet can be conformed to a surface to be treated and sutured in place.
Claim 3
Dependent Claim
39 words
The delivery system set forth in claim 1 wherein said sheet material has elongated passages extending therethrough with the axes of said passages parallel to the plane of the sheet, and said radioactive seeds being embedded in said passages.
Claim 4
Dependent Claim
39 words
The delivery system set forth in claim 1 wherein the sheet material comprises a pair of films secured together along spaced parallel rows with radioactive seeds disposed between the films and secured in the areas between said parallel rows.
Claim 5
Dependent Claim
19 words
The delivery system set forth in claim 1 wherein the absorbable material is a copolymer of lactide and glycolide.
Claim 6
Dependent Claim
14 words
The delivery system set forth in claim 1 wherein the absorbable material is polydioxanone.
Claim 7
Independent Claim
89 words
A method for brachytherapy comprising: exposing a tumor by proper surgical technique, determining the configuration of the tumor, and the desired location of radioactive sources, providing a conformable sheet material which is absorbable in living tissue and has the desired fixed, spaced, discrete, and predetermined distribution of radioactive sources completely embedded in said sheet material, and which is of the appropriate size for the tumor, conforming the sheet to the non-planar surface to be treated, fastening the sheet material in place adjacent the tumor, and closing the surgical incision.
Claim 8
Independent Claim
89 words
A method for brachytherapy comprising: exposing a tumor by proper surgical technique, determining the configuration of the tumor, and the desired location of radioactive sources, providing a conformable sheet material which is absorbable in living tissue and has the desired fixed, spaced, discrete, and predetermined distribution of radioactive sources completely embedded in said sheet material, and which is of the appropriate size for the tumor, conforming the sheet to the non-planar surface to be treated, fastening the sheet material in place adjacent the tumor, and closing the surgical incision.
References Cited (Backward Citations)
US3127313A
Cited
US1317082A
Cited
US1238872A
Cited
US1494826A
Cited
US1578945A
Cited
US1517861A
Cited
US2067589A
Cited
US2153889A
Cited
US2322902A
Cited
US2517513A
Cited
GB704628A
Cited
US2829636A
Cited
US3463158A
Cited
US3351049A
Cited
US3663685A
Cited
US3565869A
Cited
US3887699A
Cited
US3589356A
Cited
US3636956A
Cited
US3750653A
Cited
US3872856A
Cited
US3867190A
Cited
US4180064A
Cited
US4351337A
Cited
FR2240746A1
Cited
US3976071A
Cited
US4014987A
Cited
US3927325A
Cited
US3978203A
Cited
US3948263A
Cited
US3950282A
Cited
US4054138A
Cited
US4096239A
Cited
US4052988A
Cited
US4218255A
Cited
US4086914A
Cited
US4182750A
Cited
US4167179A
Cited
US4322398A
Cited
US4588395A
Cited
US4249531A
Cited
EP0030822A2
Cited
US4323055A
Cited
US4309776A
Cited
US4304767A
Cited
US4510924A
Cited
US4402308A
Cited
EP0064860A2
Cited
US4509506A
Cited
US4534760A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |