US5226430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for angioplasty
Assignee: Beth Israel Deaconess Medical Center
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Filing: 1991-05-24
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Granted: 1993-07-13
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Expires: 2011-05-24
Abstract
Abstract The region surrounding the balloon utilized in percutaneous transluminal coronary angioplasty is heated by means within the balloon or within the skin of the balloon upon inflation of the balloon such that disrupted tissues of the plaque in the arterial wall are heated in order to fuse together fragmented segments of tissue and to coagulate blood trapped within dissected planes of tissue and within fissures created by wall fracture such that upon subsequent balloon deflation a smooth cylindrically-shaped channel results, thereby to prevent collapse of any flap of material which could cause either abrupt arterial closure and an acute myocardial infarction or gradual restenosis at the site of balloon inflation.
Inventors
- 👤 J. Richard Spears
- 👤 Donna Bourgelais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:07
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61B; A61B17/00; A61B17/22; A61B18/00; A61B18/04; A61B18/08; A61B18/082; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; A61B2017/22001; A61B2017/22002; A61B2017/22051; A61B2017/22061; A61B2017/22062; A61B2017/22064; A61B2018/00315; A61B2018/00559; A61B2018/044; A61B2018/046; A61B18/06; A61B2018/068; A61F; A61F2/00; A61F2/02; A61F2/04; A61F2/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
85 words
A Method for transluminal angioplasty of a stenosed artery comprising the steps of: applying sufficient outward pressure to a selected stenosed region of the artery to form an enlarged channel therethrough, the outward pressure being applied with an expandable device; and applying sufficient energy to the stenosed region to cause the stenosed region to be heated sufficiently to substantially maintain said enlarged channel after removal of outward pressure, said energy being applied to substantially the entire circumference of the stenosed region of the artery simultaneously.
Claim 2
Independent Claim
85 words
A Method for transluminal angioplasty of a stenosed artery comprising the steps of: applying sufficient outward pressure to a selected stenosed region of the artery to form an enlarged channel therethrough, the outward pressure being applied with an expandable device; and applying sufficient energy to the stenosed region to cause the stenosed region to be heated sufficiently to substantially maintain said enlarged channel after removal of outward pressure, said energy being applied to substantially the entire circumference of the stenosed region of the artery simultaneously.
Claim 3
Dependent Claim
32 words
A method as defined in claim 1 wherein the step of applying energy is performed after sufficient outward pressure has been applied to the stenosed region to form an enlarged channel therethrough.
Claim 4
Independent Claim
92 words
A method for treatment of a body passage comprising the steps of: expanding an expandable device at a selected site within a body passage to form an enlarged lumen through the body passage; and while the expandable device is expanded to form an enlarged lumen, providing heat to the selected site within the body passage, said heat being provided at a level sufficient to fuse the tissue, said level being below the vaporization threshold of the tissue, and said heat being provided to substantially the entire circumference of the body passage simultaneously.
Claim 5
Independent Claim
92 words
A method for treatment of a body passage comprising the steps of: expanding an expandable device at a selected site within a body passage to form an enlarged lumen through the body passage; and while the expandable device is expanded to form an enlarged lumen, providing heat to the selected site within the body passage, said heat being provided at a level sufficient to fuse the tissue, said level being below the vaporization threshold of the tissue, and said heat being provided to substantially the entire circumference of the body passage simultaneously.
Claim 6
Independent Claim
62 words
A method for treatment of a body passage comprising the steps of: expanding a selected region of a body passage with an expandable device to form an enlarged lumen through the body passage; and heating substantially the entire circumference of the selected region simultaneously, the selected region being heated sufficiently to substantially maintain the enlarged lumen after removal of the expandable device.
Claim 7
Independent Claim
62 words
A method for treatment of a body passage comprising the steps of: expanding a selected region of a body passage with an expandable device to form an enlarged lumen through the body passage; and heating substantially the entire circumference of the selected region simultaneously, the selected region being heated sufficiently to substantially maintain the enlarged lumen after removal of the expandable device.
Claim 8
Dependent Claim
15 words
A method as defined in claim 4 wherein said body passage comprises a blood vessel.
Claim 9
Dependent Claim
28 words
A method as defined in claim 4 wherein the step of heating the selected region is performed after an enlarged lumen has been formed through the body passage.
Claim 10
Independent Claim
72 words
A method for treatment of a body passage comprising the steps of: compressing the tissue in a selected region of the body passage with an expandable device; and applying energy to the selected region at a level sufficient to fuse the compressed tissue in the selected region, said level being below the vaporization threshold of the tissue and said energy being applied to substantially the entire circumference of the body passage simultaneously.
Claim 11
Independent Claim
72 words
A method for treatment of a body passage comprising the steps of: compressing the tissue in a selected region of the body passage with an expandable device; and applying energy to the selected region at a level sufficient to fuse the compressed tissue in the selected region, said level being below the vaporization threshold of the tissue and said energy being applied to substantially the entire circumference of the body passage simultaneously.
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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) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |