Patent US4815449A successfully refreshed from Google Patents.
US4815449A
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Delivery system for interstitial radiation therapy including substantially non-deflecting elongated member
Assignee: BRUCE S HOROWITZ 494 NW 165TH STREET APT #C302 MIAMI FLORIDA 33167
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Filing: 1987-03-30
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Granted: 1989-03-28
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Expires: 2007-03-30
Abstract
Abstract A delivery system for interstitial radiation therapy comprising a substantially non-deflecting elongated member of material which is absorbable in living tissue and a plurality of radioactive seeds dispersed in a predetermined array within the member. In one form, the member comprises an elongated member having the seeds longitudinally spaced therein and forming a needle that can be inserted in the tumor to be treated.
Inventors
- 👤 Bruce S. Horowitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:35
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61M; A61M37/00; A61M37/0069; A61N5/1007; A61N2005/1012; A61N2005/1019; A61N2005/1023; A61N2005/1024; A61N5/1014; A61N5/1027
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
140 words
A delivery system for interstitial radiation therapy comprising: an integral elongated member made from a material which is absorbable in living tissue, said member having a length substantially greater than its width, and a plurality of radioactive sources predeterminedly dispersed longitudinally in said member, said member having sufficient rigidity to be driven into a tumor without deflection to provide for controlled and precise placement of the radioactive sources in the tumor, said integral elongated member comprising: a tapered tip at one end thereof; and, a plurality of visibly identifiable and physically defined segments, a subgroup of said plurality of segments encasing said plurality of radioactive sources, each segment of said subgroup containing a corresponding radioactive source of said plurality of radioactive sources, said plurality of segments defining said integral elongated member with said tip at one end of said member.
Claim 2
Dependent Claim
140 words
A delivery system for interstitial radiation therapy comprising: an integral elongated member made from a material which is absorbable in living tissue, said member having a length substantially greater than its width, and a plurality of radioactive sources predeterminedly dispersed longitudinally in said member, said member having sufficient rigidity to be driven into a tumor without deflection to provide for controlled and precise placement of the radioactive sources in the tumor, said integral elongated member comprising: a tapered tip at one end thereof; and, a plurality of visibly identifiable and physically defined segments, a subgroup of said plurality of segments encasing said plurality of radioactive sources, each segment of said subgroup containing a corresponding radioactive source of said plurality of radioactive sources, said plurality of segments defining said integral elongated member with said tip at one end of said member.
Claim 3
Dependent Claim
21 words
The delivery system set forth in claim 1 wherein said elongated member is made from a copolymer of lactide and glycolide.
Claim 4
Dependent Claim
20 words
The delivery system set forth in claim 2 wherein said segments are delineated by circumferential grooves about said elongated member.
Claim 5
Dependent Claim
209 words
The delivery system for interstitial radiation therapy comprising: an elongated member made from a material which is absorbable in living tissue, said member having a length substantially greater than its width, and a plurality of discrete radioactive sources predeterminedly dispersed along the length of said member, said elongated member having sufficient rigidity to be driven into a tumor without deflection to provide for controlled and precise placement of the discrete radioactive sources in the tumor wherein said elongated member comprises a hollow tube of absorbable material having said plurality of discrete radioactive sources dispersed therein and longitudinally spaced therealong by a plurality of spacers of absorbable material disposed in said tube between one or more of said plurality of discrete radioactive sources to obtained a fixed linear positioning of all of said plurality of radioactive sources wherein said tube has a characteristic that maintains the tube's integrity and the fixed linear positioning at said plurality of radioactive sources for a first predetermined period of time subsequent to an implantation into said living tissue and wherein said tube has a further characteristic such that the tube is substantially absorbed by said living tissue over a second predetermined period of time that is longer than said first predetermined period of time.
Claim 6
Dependent Claim
209 words
The delivery system for interstitial radiation therapy comprising: an elongated member made from a material which is absorbable in living tissue, said member having a length substantially greater than its width, and a plurality of discrete radioactive sources predeterminedly dispersed along the length of said member, said elongated member having sufficient rigidity to be driven into a tumor without deflection to provide for controlled and precise placement of the discrete radioactive sources in the tumor wherein said elongated member comprises a hollow tube of absorbable material having said plurality of discrete radioactive sources dispersed therein and longitudinally spaced therealong by a plurality of spacers of absorbable material disposed in said tube between one or more of said plurality of discrete radioactive sources to obtained a fixed linear positioning of all of said plurality of radioactive sources wherein said tube has a characteristic that maintains the tube's integrity and the fixed linear positioning at said plurality of radioactive sources for a first predetermined period of time subsequent to an implantation into said living tissue and wherein said tube has a further characteristic such that the tube is substantially absorbed by said living tissue over a second predetermined period of time that is longer than said first predetermined period of time.
Claim 7
Dependent Claim
16 words
The delivery system set forth in claim 4 wherein said hollow tube has a tapered end.
Claim 8
Dependent Claim
28 words
The delivery system set forth in claim 4 wherein each one of said plurality of discrete radioactive sources comprise a seed that defines an encapsulated discrete radioactive source.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |