Patent US4916302A successfully refreshed from Google Patents.
US6398709B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elongated member for intravascular delivery of radiation
Assignee: Boston Scientific Scimed Inc
•
Filing: 1999-10-19
•
Granted: 2002-06-04
•
Expires: 2019-10-19
Abstract
Abstract A radioactive source for use in intravascular treatment includes an elongated wire having a first diameter and an integral distal end having a second diameter. The second diameter is less than the first diameter. A plurality of spaced apart toroidal elements are disposed on the distal end of the wire. The toroidal elements include radioactive material.
Inventors
- 👤 Timothy G.J. Ehr
- 👤 Sherri Henkemeyer
- 👤 Michael J. Urick
- 👤 Jeffrey H. Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1002
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
82 words
A radioactive source for use in intravascular treatment, the radioactive source comprising: an elongated support wire having a first diameter and a distal portion having a second diameter, the second diameter being less than the first diameter; and a plurality of spaced-apart toroidal elements disposed on the distal portion, each toroidal element including radioactive material, wherein each of the toroidal elements is bar-bell shaped having a shaft portion and first and second enlarged end members on each end of the shaft portion.
Claim 2
Dependent Claim
82 words
A radioactive source for use in intravascular treatment, the radioactive source comprising: an elongated support wire having a first diameter and a distal portion having a second diameter, the second diameter being less than the first diameter; and a plurality of spaced-apart toroidal elements disposed on the distal portion, each toroidal element including radioactive material, wherein each of the toroidal elements is bar-bell shaped having a shaft portion and first and second enlarged end members on each end of the shaft portion.
Claim 3
Dependent Claim
21 words
The radioactive source of claim 1 , wherein the radioactive material is disposed on the shaft portion of each toroidal element.
Claim 4
Dependent Claim
22 words
The radioactive source of claim 2 , wherein the radioactive material is only disposed on the shaft portion of each toroidal element.
Claim 5
Dependent Claim
23 words
The radioactive source of claim 1 , wherein each of the toroidal elements are fixed in a stationary position on the distal portion.
Claim 6
Dependent Claim
46 words
The radioactive source of claim 1 , wherein each toroidal element includes a bore extending through the first end member, the shaft portion and the second end member, wherein the distal portion extends into the bore allowing the toroidal element to slide upon the distal portion.
Claim 7
Dependent Claim
23 words
The radioactive source of claim 5 , wherein each of the toroidal elements are fixed in a stationary position on the distal portion.
Claim 8
Dependent Claim
44 words
The radioactive source of claim 1 , wherein the first and second enlarged end members are substantially identical and include an outwardly facing circumferential surface defined by a radius from a center axis, wherein the radius is constant along and about the center axis.
Claim 9
Dependent Claim
48 words
The radioactive source of claim 1 , wherein the first and second enlarged end members are substantially identical and include an outwardly facing circumferential surface defined by a radius from a center axis, wherein the radius is constant about the center axis but varies along the center axis.
Claim 10
Dependent Claim
17 words
The radioactive source of claim 1 , wherein the toroidal elements are integral with the distal portion.
Claim 11
Dependent Claim
23 words
The radioactive source of claim 1 , wherein each of the toroidal elements are fixed in a stationary position on the distal portion.
Claim 12
Dependent Claim
26 words
The radioactive source of claim 1 , wherein each of the toroidal elements includes a bore allowing the toroidal element to slide upon the distal portion.
Claim 13
Dependent Claim
24 words
The radioactive source of claim 1 , wherein the elongated support wire includes an enlarged end on a remote end of the distal portion.
Claim 14
Dependent Claim
20 words
The radioactive source of claim 12 , wherein the enlarged end has a diameter approximately equal to the first diameter.
Claim 15
Dependent Claim
18 words
The radioactive source of claim 1 , wherein each of the toroidal elements comprises a solid, compressed radioisotope.
Claim 16
Dependent Claim
21 words
The radioactive source of claim 14 , wherein each of the toroidal elements includes a gold plating disposed on the radioisotope.
Claim 17
Dependent Claim
23 words
The radioactive source of claim 1 , wherein each of the toroidal elements comprises a radioisotope layer on an outwardly facing major surface.
Claim 18
Dependent Claim
34 words
The radioactive source of claim 1 , wherein the elongated support wire includes a tapered transition portion from the elongated support wire of the first diameter to the second diameter of the distal portion.
Claim 19
Dependent Claim
60 words
The radioactive source of claim 17 , wherein the transition portion is formed with a conical surface disposed about a longitudinal axis of the elongated support wire, the conical surface defined by an angle of inclination with respect to a reference line perpendicular to the longitudinal axis in the range from greater than 0 degrees to less than 60 degrees.
References Cited (Backward Citations)
US2546761A
Cited
US2862108A
Cited
US2955208A
Cited
US3060924A
Cited
US3147383A
Cited
US3324847A
Cited
US3505991A
Cited
US3674006A
Cited
US3643096A
Cited
US3861380A
Cited
US3669093A
Cited
US3750653A
Cited
US3866050A
Cited
US3811426A
Cited
US3927325A
Cited
US4096862A
Cited
US4220864A
Cited
US4588395A
Cited
US4225790A
Cited
US4281252A
Cited
US4244357A
Cited
US4314157A
Cited
US4364376A
Cited
US4631415A
Cited
US4584991A
Cited
US4763671A
Cited
US4815449A
Cited
US4897076A
Cited
US4784116A
Cited
US4702228A
Cited
US5141487A
Cited
US4706652A
Cited
US4763642A
Cited
US5084001A
Cited
US5030194A
Cited
US4881937A
Cited
US4819618A
Cited
US4976266A
Cited
US4782834A
Cited
US4851694A
Cited
US5106360A
Cited
US4936823A
Cited
US5649924A
Cited
US5163896A
Cited
US5575749A
Cited
US5084002A
Cited
US4976680A
Cited
US5103395A
Cited
US5183455A
Cited
US4969863A
Cited
US4861520A
Cited
US4963128A
Cited
US5032113A
Cited
US5147282A
Cited
US4976690A
Cited
EP0593136B1
Cited
US5176617A
Cited
US5059166A
Cited
US5199939A
Cited
US5199939B1
Cited
US5267960A
Cited
US5213561A
Cited
US5120973A
Cited
EP0629380B1
Cited
US5139473A
Cited
US5092834A
Cited
US5624372A
Cited
US5807231A
Cited
US5282781A
Cited
US5354257A
Cited
US5484384A
Cited
EP0514913B1
Cited
US5395300A
Cited
US5611767A
Cited
US5429582A
Cited
US5370685A
Cited
US5344383A
Cited
US5302168A
Cited
US5411466A
Cited
US5391139A
Cited
US5425720A
Cited
US5405309A
Cited
US5643171A
Cited
US6283910B1
Cited
EP0696906B1
Cited
US5674177A
Cited
US5409015A
Cited
EP0813894B1
Cited
EP0633041B1
Cited
US5540659A
Cited
US5891091A
Cited
US5498227A
Cited
US5532122A
Cited
US6217503B1
Cited
US5707332A
Cited
US5503613A
Cited
US5538494A
Cited
US5618266A
Cited
US5840064A
Cited
US5556389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-06-03 | 2005-12-03 | 2006-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-03 | 2009-12-03 | 2010-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-06-03 | 2013-12-03 | 2014-06-04 | $7700.00 | Window Closed / Lapsed |