Patent US5405472A successfully refreshed from Google Patents.
US5405472A
Expired / Lapsed
US
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Method of making infusion balloon catheter
Assignee: Cordis Corp
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Filing: 1993-06-21
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Granted: 1995-04-11
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Expires: 2013-06-21
Abstract
Abstract A balloon catheter comprises a catheter shaft and a balloon carried on the shaft, an inflation lumen being provided. The balloon comprises a plurality of holes of a size to permit medication delivered through the lumen to pass outwardly through the holes. The balloon carries on an outer surface a substantially hydrophilic, tubular microporous membrane covering the holes, to break up streams of flowing medication.
Inventors
- 👤 James E. Leone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:04
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M16/00; A61M16/04; A61M16/0434; A61M16/0443; A61M16/0475; A61M16/0477; A61M16/0481; A61M25/1011; A61M2025/1013; A61M2025/1043; A61M2025/105; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
87 words
The method of placing a microporous membrane on a catheter balloon having tapered end portions, which comprises: rolling a rectangular portion of a microporous membrane into a cylinder having overlapped, opposing edges; sealing said opposed edges together; placing said membrane cylinder on said balloon; and sealing ends of said microporous membrane cylinder to spaced portions of said balloon while leaving an annular region between said balloon and said membrane cylinder unsealed wherein said spaced portions of said balloon are between said tapered end portions of said balloon.
Claim 2
Independent Claim
87 words
The method of placing a microporous membrane on a catheter balloon having tapered end portions, which comprises: rolling a rectangular portion of a microporous membrane into a cylinder having overlapped, opposing edges; sealing said opposed edges together; placing said membrane cylinder on said balloon; and sealing ends of said microporous membrane cylinder to spaced portions of said balloon while leaving an annular region between said balloon and said membrane cylinder unsealed wherein said spaced portions of said balloon are between said tapered end portions of said balloon.
Claim 3
Dependent Claim
16 words
The method of claim 1 in which said microporous membrane is tightly rolled about a mandrel.
Claim 4
Dependent Claim
33 words
The method of claim 1 in which said membrane cylinder is sealed to the balloon with a heat actuatable adhesive and said membrane opposed edges are sealed together with a heat actuatable adhesive.
Claim 5
Dependent Claim
38 words
The method of claim 1 in which said balloon has holes which are surrounded by said membrane cylinder after said step of sealing said ends of said membrane cylinder to said spaced sealing to portions of said balloon.
Claim 6
Independent Claim
104 words
The method of placing a microporous membrane on a catheter balloon in which said catheter balloon is a molded balloon which has spaced-apart cylindrical portions and a central portion of less diameter than said cylindrical portions, said central portion having a plurality of holes; said method comprising: rolling a rectangular portion of a microporous membrane into a cylinder having overlapping, opposed edges; sealing said opposed edges together; placing said membrane cylinder on said balloon; and sealing the respective ends of said microporous, membrane cylinder to the spaced-apart cylindrical portions of said balloon, whereby said membrane cylinder completely surrounds said central portion of reduced diameter.
Claim 7
Independent Claim
104 words
The method of placing a microporous membrane on a catheter balloon in which said catheter balloon is a molded balloon which has spaced-apart cylindrical portions and a central portion of less diameter than said cylindrical portions, said central portion having a plurality of holes; said method comprising: rolling a rectangular portion of a microporous membrane into a cylinder having overlapping, opposed edges; sealing said opposed edges together; placing said membrane cylinder on said balloon; and sealing the respective ends of said microporous, membrane cylinder to the spaced-apart cylindrical portions of said balloon, whereby said membrane cylinder completely surrounds said central portion of reduced diameter.
Claim 8
Dependent Claim
18 words
The method of claim 5 in which each end of said balloon is sealed to a catheter shaft.
Claim 9
Dependent Claim
19 words
The method of claim 6 in which said microporous membrane is tightly rolled into a cylinder about a mandrel.
Claim 10
Dependent Claim
33 words
The method of claim 7 in which said membrane opposed edges are sealed together with a heat actuatable adhesive, and said membrane cylinder is sealed to the balloon with a heat actuatable adhesive.
Claim 11
Dependent Claim
26 words
The method of claim 8 in which the pore size of said microporous membrane is less than the size of the holes in said catheter balloon.
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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) | 1998-04-10 | 1998-10-10 | 1999-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-10 | 2002-10-10 | 2003-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-10 | 2006-10-10 | 2007-04-11 | $7700.00 | Window Closed / Lapsed |