Patent EP0408245A1 successfully refreshed from Google Patents.
Patent US6267775B1 successfully refreshed from Google Patents.
US6267775B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-expanding medical device for centering radioactive treatment sources in body vessels
Assignee: Boston Scientific Scimed Inc
•
Filing: 2000-03-06
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Granted: 2001-07-31
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Expires: 2020-03-06
Abstract
Abstract A medical device for treating a body vessel with a radioactive source includes an elongated tubular catheter and an axially flexible support structure on a distal end of the catheter. The catheter has proximal and distal ends, and a lumen for receiving a radioactive source. The support structure is formed from a plurality of filaments which are helically wound and interwoven in a braided configuration and has a plurality of alternately spaced unconstricted and constricted regions. The unconstricted regions are radially compressible and self-expandable from a positioning diameter when the device is in a positioning state to a vessel-engaging, treatment diameter which is greater than the positioning diameter when the device is in the treatment state. The constricted regions are engaged with the catheter and concentric with the unconstricted regions. When in the treatment state the support structure causes the catheter to be substantially radially centered within a vessel so radiation is uniformly applied to the vessel during treatment.
Inventors
- 👤 Claude O. Clerc
- 👤 Jon S. Stinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:36
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1002; A61M; A61M25/00; A61M25/10; A61M25/1011; A61N2005/1003
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
68 words
A centering catheter for centering a radiation source in a vascular lumen, comprising: an elongate shaft having a proximal end and a distal end; and an expandable braid support structure connected to the distal end of the elongate shaft for centering the radioactive source within the vascular lumen, the braid structure defining a plurality of constriction regions upon expansion, the braid comprising a plurality of interwoven radio-transparent fibers.
Claim 2
Dependent Claim
68 words
A centering catheter for centering a radiation source in a vascular lumen, comprising: an elongate shaft having a proximal end and a distal end; and an expandable braid support structure connected to the distal end of the elongate shaft for centering the radioactive source within the vascular lumen, the braid structure defining a plurality of constriction regions upon expansion, the braid comprising a plurality of interwoven radio-transparent fibers.
Claim 3
Dependent Claim
27 words
A centering catheter as in claim 1 , wherein the elongate shaft includes a source lumen extending therethrough which is adapted to accommodate the radioactive source therein.
Claim 4
Dependent Claim
17 words
A centering catheter as in claim 1 , wherein the constricted regions are formed by constriction bands.
Claim 5
Dependent Claim
19 words
A centering catheter as in claim 1 , wherein the constricted regions are formed by heat treating the braid.
Claim 6
Dependent Claim
14 words
A centering catheter as in claim 1 , wherein the fibers comprise polymer fibers.
Claim 7
Dependent Claim
16 words
A centering catheter as in claim 5 , wherein the polymer fibers comprise aramid fiber filaments.
Claim 8
Dependent Claim
15 words
A centering catheter as in claim 1 , wherein the braid support structure is self-expanding.
Claim 9
Dependent Claim
29 words
A centering catheter as in claim 7 , further comprising a tubular member disposed about the catheter and the expandable braid from retaining the braid in a collapsed configuration.
Claim 10
Dependent Claim
105 words
A medical system for treating a vascular site with ionizing radiation via a vascular lumen, comprising: an elongate radiation source; and a centering catheter for centering the radiation source in the vascular lumen, the centering catheter including an elongate shaft having a proximal end, a distal end and a source lumen extending therethrough which is adapted to accommodate the radioactive source therein, an expandable braid support structure connected to the distal end of the elongate shaft for centering the radioactive source within the vascular lumen, the braid structure defining a plurality of constriction regions upon expansion, the braid comprising a plurality of interwoven radio-transparent fibers.
Claim 11
Dependent Claim
105 words
A medical system for treating a vascular site with ionizing radiation via a vascular lumen, comprising: an elongate radiation source; and a centering catheter for centering the radiation source in the vascular lumen, the centering catheter including an elongate shaft having a proximal end, a distal end and a source lumen extending therethrough which is adapted to accommodate the radioactive source therein, an expandable braid support structure connected to the distal end of the elongate shaft for centering the radioactive source within the vascular lumen, the braid structure defining a plurality of constriction regions upon expansion, the braid comprising a plurality of interwoven radio-transparent fibers.
Claim 12
Dependent Claim
17 words
A medical system as in claim 9 , wherein the constricted regions are formed by constriction bands.
Claim 13
Dependent Claim
19 words
A medical system as in claim 9 , wherein the constricted regions are formed by heat treating the braid.
Claim 14
Dependent Claim
14 words
A medical system as in claim 9 , wherein the fibers comprise polymer fibers.
Claim 15
Dependent Claim
16 words
A medical system as in claim 12 , wherein the polymer fibers comprise aramid fiber filaments.
Claim 16
Dependent Claim
15 words
A medical system as in claim 9 , wherein the braid support structure is self-expanding.
Claim 17
Dependent Claim
29 words
A medical system as in claim 14 , further comprising a tubular member disposed about the catheter and the expandable braid from retaining the braid in a collapsed configuration.
Claim 18
Dependent Claim
104 words
A centering catheter for centering a radiation source in a vascular lumen, comprising: an elongate shaft having a proximal end, a distal end a source lumen extending therethrough which is adapted to accommodate the radioactive source therein; an expandable braid support structure connected to the distal end of the elongate shaft for centering the source lumen and radioactive source within the vascular lumen, the braid comprising a plurality of interwoven radio-transparent polymer fibers; and a plurality of spaced apart constriction members disposed on the braid support structure for defining a plurality of constricted regions along the braid support structure when the braid is expanded.
Claim 19
Dependent Claim
104 words
A centering catheter for centering a radiation source in a vascular lumen, comprising: an elongate shaft having a proximal end, a distal end a source lumen extending therethrough which is adapted to accommodate the radioactive source therein; an expandable braid support structure connected to the distal end of the elongate shaft for centering the source lumen and radioactive source within the vascular lumen, the braid comprising a plurality of interwoven radio-transparent polymer fibers; and a plurality of spaced apart constriction members disposed on the braid support structure for defining a plurality of constricted regions along the braid support structure when the braid is expanded.
Claim 20
Dependent Claim
15 words
A centering catheter as in claim 16 , wherein the braid support structure is self-expanding.
Claim 21
Dependent Claim
29 words
A centering catheter as in claim 17 , further comprising a tubular member disposed about the catheter and the expandable braid from retaining the braid in a collapsed configuration.
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
US4281252A
Cited
US4225790A
Cited
US4244357A
Cited
US4314157A
Cited
US4364376A
Cited
US4655771A
Cited
US4655771B1
Cited
US4631415A
Cited
US4584991A
Cited
US4763671A
Cited
US4815449A
Cited
US4897076A
Cited
US4732152A
Cited
US4784116A
Cited
US4702228A
Cited
US5141487A
Cited
US4706652A
Cited
US4763642A
Cited
US5061275A
Cited
US5084001A
Cited
US4881937A
Cited
US5030194A
Cited
US4819618A
Cited
US4976266A
Cited
US5026337A
Cited
US4782834A
Cited
US4851694A
Cited
US5106360A
Cited
US4936823A
Cited
US5649924A
Cited
US5163896A
Cited
US5575749A
Cited
US5084002A
Cited
US5183455A
Cited
US4976680A
Cited
US5103395A
Cited
US4861520A
Cited
US4969863A
Cited
US4963128A
Cited
US5032113A
Cited
US5147282A
Cited
US4976690A
Cited
US5059166A
Cited
US5176617A
Cited
US5199939B1
Cited
US5199939A
Cited
US5267960A
Cited
US5213561A
Cited
US5120973A
Cited
US5092834A
Cited
US5139473A
Cited
US5282781A
Cited
US5624372A
Cited
US5807231A
Cited
US5484384A
Cited
US5354257A
Cited
US5395300A
Cited
US5611767A
Cited
US5429582A
Cited
US5370685A
Cited
US5344383A
Cited
US5411466A
Cited
US5302168A
Cited
US5201757A
Cited
US5391139A
Cited
US5484444A
Cited
US5425720A
Cited
US5405309A
Cited
US5643171A
Cited
US5674177A
Cited
US5409015A
Cited
US5540659A
Cited
US5498227A
Cited
US5532122A
Cited
US5503613A
Cited
US5707332A
Cited
US5538494A
Cited
US5556389A
Cited
US5840064A
Cited
US5618266A
Cited
US5857956A
Cited
US5503614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-07-30 | 2005-01-29 | 2005-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-07-30 | 2009-01-29 | 2009-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-07-30 | 2013-01-29 | 2013-07-31 | $7700.00 | Window Closed / Lapsed |