Patent US6110097A successfully refreshed from Google Patents.
US6110097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfusion balloon catheter with radioactive source
Assignee: Boston Scientific Scimed Inc
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Filing: 1997-03-06
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Granted: 2000-08-29
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Expires: 2017-03-06
Abstract
Abstract A device for irradiating human vessel interior walls including a perfusion balloon catheter having a radioactive perfusion tube affixed therein. Preferably, the balloon is helical, having adjacent helical strand windings closely spaced in contact upon inflation to minimize trapped blood and reduce attenuation. The perfusion tube can be made radioactive by inclusion of a helical, radioactive metal coil in the perfusion tube wall. In use, the catheter can be advanced over a guide wire to a stenosis, inflated to dilate the site, with beta radiation from the coil passing through the device to the vessel walls, relatively unhindered by blood.
Inventors
- 👤 Roger N. Hastings
- 👤 Michael J. Urick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:35
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1002; A61M; A61M25/00; A61M25/0043; A61M2025/0063; A61N2005/1003; A61N2005/1004
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
86 words
A device for irradiating vessel walls comprising: an elongate tubular member having a proximal portion and a distal portion, said tubular member including an inflation lumen extending the length thereof; an a perfusion head attached to said elongate member distal portion, said perfusion head including an inflatable balloon in fluid communication with said inflation lumen, said perfusion head having a perfusion tube forming a perfusion lumen extending longitudinally through said balloon, said perfusion tube, at least in part, containing a radiation emitting material fixedly disposed thereon.
Claim 2
Independent Claim
86 words
A device for irradiating vessel walls comprising: an elongate tubular member having a proximal portion and a distal portion, said tubular member including an inflation lumen extending the length thereof; an a perfusion head attached to said elongate member distal portion, said perfusion head including an inflatable balloon in fluid communication with said inflation lumen, said perfusion head having a perfusion tube forming a perfusion lumen extending longitudinally through said balloon, said perfusion tube, at least in part, containing a radiation emitting material fixedly disposed thereon.
Claim 3
Dependent Claim
31 words
A device as recited in claim 1, wherein said perfusion tube includes a coiled member affixed within an extending through said balloon to support said perfusion lumen walls during balloon inflation.
Claim 4
Dependent Claim
17 words
A device as recited in claim 2, wherein said coiled tubular member includes a radiation emitting material.
Claim 5
Dependent Claim
16 words
A device as recited in claim 3, wherein said coiled tubular member is formed of metal.
Claim 6
Dependent Claim
27 words
A device as recited in claim 2, wherein said inflatable balloon is formed of a tubular member wrapped around said perfusion tube to form multiple adjacent windings.
Claim 7
Dependent Claim
35 words
A device as recited in claim 5, wherein said inflatable balloon adjacent windings are closely spaced or in contact with inflated to minimize blood trapped between said balloon and a vessel wall to reduce attenuation.
Claim 8
Dependent Claim
16 words
A device as recited in claim 5, wherein said central shaft portion includes said perfusion tube.
Claim 9
Independent Claim
133 words
A method for treating a stenosed vessel site comprising the steps of: providing a catheter for irradiating vessel walls including an elongate tubular member having a proximal portion and a distal portion, said tubular member including an inflation lumen, said catheter further including a perfusion head attached to said elongate member distal portion, said perfusion head including an inflatable balloon in fluid communication with said inflation lumen, said perfusion head having a perfusion tube therethrough forming a perfusion lumen, said perfusion tube at least in part, containing a radiation emitting material fixedly disposed thereon; inserting said device into the vasculature of a patient such that the perfusion head is positioned adjacent to a treatment site; inflating said inflatable balloon; and exposing said treatment site to radiation from said radioactive wall through the balloon.
Claim 10
Independent Claim
133 words
A method for treating a stenosed vessel site comprising the steps of: providing a catheter for irradiating vessel walls including an elongate tubular member having a proximal portion and a distal portion, said tubular member including an inflation lumen, said catheter further including a perfusion head attached to said elongate member distal portion, said perfusion head including an inflatable balloon in fluid communication with said inflation lumen, said perfusion head having a perfusion tube therethrough forming a perfusion lumen, said perfusion tube at least in part, containing a radiation emitting material fixedly disposed thereon; inserting said device into the vasculature of a patient such that the perfusion head is positioned adjacent to a treatment site; inflating said inflatable balloon; and exposing said treatment site to radiation from said radioactive wall through the balloon.
Claim 11
Dependent Claim
16 words
A method as recited in claim 8, wherein said inflating step includes dilating said stenosed site.
Claim 12
Dependent Claim
13 words
A method as recited in claim 8, wherein said radiation is beta radiation.
Claim 13
Dependent Claim
39 words
A method as recited in claim 10, wherein said balloon is a helical balloon including at least one helical strand configured into a plurality of windings about said perfusion lumen wall, said windings being substantially adjacent to one another.
Claim 14
Dependent Claim
28 words
A method as recited in claim 11, wherein said catheter includes a guide wire lumen and said catheter is inserted over a guide wire in said inserting step.
Claim 15
Dependent Claim
15 words
A method as recited in claim 11, wherein said radioactive wall includes a metal coil.
Claim 16
Dependent Claim
16 words
A method as recited in claim 11, wherein said radioactive wall includes a radioactive metal coil.
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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) | 2003-08-29 | 2004-02-28 | 2004-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-29 | 2008-02-28 | 2008-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-29 | 2012-02-28 | 2012-08-29 | $7700.00 | Window Closed / Lapsed |