US5947889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon catheter used to prevent re-stenosis after angioplasty and process for producing a balloon catheter
Assignee: Individual
•
Filing: 1996-01-10
•
Granted: 1999-09-07
•
Expires: 2016-01-10
Abstract
Abstract A balloon catheter (1) is characterized by at least one radioactive nuclide species in or on the wall of the balloon (2) in order to eliminate vessel restrictions or stenoses and to inhibit restenosis in arteries (6), veins or vessel implants or to inhibit the growth of tumors, in which at least one radionuclide species is mixed with the plastic of the balloon wall, directly implanted into the balloon wall, or applied to the balloon wall as firmly adhesive film.
Inventors
- 👤 Christoph Hehrlein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:57
CPC Classifications
A; A61; A61K; A61K51/00; A61K51/12; A61K51/1282; A61L; A61L29/00; A61L29/08; A61L29/10; A61L29/106; A61L29/14; A61L29/16; A61N; A61N5/00; A61N5/10; A61N5/1001; A61N5/1002; A61B; A61B17/00; A61B17/22; A61B2017/22051; A61B2017/22065; A61B2017/22068; A61F; A61F2/00; A61F2/82; A61L2300/00; A61L2300/40; A61L2300/44; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1047; A61N2005/1004
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
43 words
A medical device suitable for treatment of a blood vessel before, during and after an angioplasty procedure comprising; catheter means having an inflatable balloon and adapted for insertion into the blood vessel; and radioactive emitter uniformly distributed, without gaps, along said inflatable balloon.
Claim 2
Dependent Claim
43 words
A medical device suitable for treatment of a blood vessel before, during and after an angioplasty procedure comprising; catheter means having an inflatable balloon and adapted for insertion into the blood vessel; and radioactive emitter uniformly distributed, without gaps, along said inflatable balloon.
Claim 3
Dependent Claim
14 words
The device of claim 1, wherein said radioactive emitter is implanted into said balloon.
Claim 4
Dependent Claim
63 words
A medical device suitable for treatment of a blood vessel before, during and after an angioplasty procedure comprising: catheter means having an inflatable balloon and adapted for insertion into the blood vessel; and a first coating disposed on a surface of said balloon, said first coating carrying a radioactive emitter, wherein said radioactive emitter is uniformly distributed, without gaps, along said inflatable balloon.
Claim 5
Dependent Claim
63 words
A medical device suitable for treatment of a blood vessel before, during and after an angioplasty procedure comprising: catheter means having an inflatable balloon and adapted for insertion into the blood vessel; and a first coating disposed on a surface of said balloon, said first coating carrying a radioactive emitter, wherein said radioactive emitter is uniformly distributed, without gaps, along said inflatable balloon.
Claim 6
Dependent Claim
29 words
The device of claim 3, wherein said first coating comprises a metallic film, said metallic film being one of implanted with said radiation emitter and bombarded with charged particles.
Claim 7
Dependent Claim
17 words
The device of claim 4, wherein said metallic film comprises at least one of aluminum and silver.
Claim 8
Dependent Claim
13 words
The device of claim 3, wherein said first coating comprises a plastic film.
Claim 9
Dependent Claim
12 words
The device of claim 6, wherein said plastic film comprises a polymer.
Claim 10
Dependent Claim
11 words
The device of claim 3, wherein said first coating comprises polyethylene.
Claim 11
Dependent Claim
21 words
The device of claim 1, wherein said radioactive emitter is mixed into a plastic material of said balloon during manufacture thereof.
Claim 12
Dependent Claim
29 words
The device of claim 1, wherein said catheter means has openings before and after said balloon and further having a perfusion channel connected to said openings for administering medication.
Claim 13
Dependent Claim
30 words
The device of claim 1, wherein said catheter means has a lumen before and after said balloon for maintaining blood flow through the blood vessel when said balloon is inflated.
Claim 14
Dependent Claim
20 words
The device of claim 1, wherein said radioactive emitter emits at least one of α-, β-, and low energy x-radiation.
Claim 15
Dependent Claim
11 words
The device of claim 12, wherein said emitter comprises phosphorus 32.
Claim 16
Dependent Claim
21 words
The device of claim 1, wherein said emitter emits radiation having a range between 0.05 to 10 mm in human tissue.
Claim 17
Dependent Claim
21 words
The device of claim 1, wherein said emitter has a radioactivity between 0.001 to 1000 mCi per cm of balloon length.
Claim 18
Dependent Claim
39 words
The device of claim 1, further comprising sheath means consisting essentially of radiation impermeable material disposed around said balloon in a collapsed state thereof, said sheath means adapted for removal from said balloon before treatment of the blood vessel.
Claim 19
Dependent Claim
10 words
The device of claim 1, wherein said balloon comprises polyethylene.
Claim 20
Dependent Claim
62 words
A medical device suitable for treatment of a blood vessel before, during and after an angioplasty procedure comprising: catheter means having an inflatable balloon and adapted for insertion into the blood vessel; radioactive emitter uniformly distributed, without gaps, along said inflatable balloon; and a coating disposed on an outside surface of said balloon and covering said radioactive emitter for reducing tissue contamination.
Claim 21
Dependent Claim
62 words
A medical device suitable for treatment of a blood vessel before, during and after an angioplasty procedure comprising: catheter means having an inflatable balloon and adapted for insertion into the blood vessel; radioactive emitter uniformly distributed, without gaps, along said inflatable balloon; and a coating disposed on an outside surface of said balloon and covering said radioactive emitter for reducing tissue contamination.
Claim 22
Dependent Claim
83 words
A medical device suitable for treatment of a blood vessel before, during and after an angioplasty procedure comprising: catheter means having an inflatable balloon and adapted for insertion into the blood vessel; a first coating disposed on a surface of said balloon, said first coating carrying a radioactive emitter, wherein said radioactive emitter is uniformly distributed without gaps along said inflatable balloon; and a second coating disposed on an outside surface of said balloon and covering said first coating for reducing tissue contamination.
Claim 23
Dependent Claim
83 words
A medical device suitable for treatment of a blood vessel before, during and after an angioplasty procedure comprising: catheter means having an inflatable balloon and adapted for insertion into the blood vessel; a first coating disposed on a surface of said balloon, said first coating carrying a radioactive emitter, wherein said radioactive emitter is uniformly distributed without gaps along said inflatable balloon; and a second coating disposed on an outside surface of said balloon and covering said first coating for reducing tissue contamination.
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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) | 2002-09-06 | 2003-03-08 | 2003-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-06 | 2007-03-08 | 2007-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-06 | 2011-03-08 | 2011-09-07 | $7700.00 | Window Closed / Lapsed |