US6097976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter distal end assemblies with bonded surface coatings
Assignee: EP Technologies Inc
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Filing: 1998-02-27
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Granted: 2000-08-01
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Expires: 2018-02-27
Abstract
Abstract Invasive medical catheters with distal end assemblies having a protective surface coating bonded thereto are constructed by applying a hydrophilic primer to at least a portion of a tubular polymer body. The primer coating chemically bonds to the polymer substrate by developing covalent bonding or cross linking with the substrate. A plurality of printed electrode elements are then formed on the polymer body, e.g., by a pad printing process. Once the primer coating is bonded to the polymer body, the assembly is coated with a regenerated cellulose layer, e.g., by a viscose process well known in the art. The primer coating, already bonded to the catheter body, is then bonded with the regenerated cellulose at an elevated temperature. After curing, the polymer body, primer coating and regenerated cellulose layer become a single composite material, thereby preventing the regenerated cellulose coating from any movement relative to the polymer body, and providing a secure protective layer over the electrodes.
Inventors
- 👤 Yi Yang
- 👤 Josef Koblish
- 👤 Russell B. Thompson
- 👤 David K. Swanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61L; A61L29/00; A61L29/08; A61L29/085; A61M; A61M25/00; A61M25/0009; A61M25/0043; A61M25/0045; A61M2025/0046; A61M2025/0057
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
A catheter device, comprising: an elongate catheter body; a distal end electrode assembly integrally attached to the catheter body; a microporous coating at least partially bonded to the distal end assembly; and a primer coating underlying at least a portion of the microporous coating, wherein the primer coating bonds the microporous coating to the distal end assembly.
Claim 2
Dependent Claim
57 words
A catheter device, comprising: an elongate catheter body; a distal end electrode assembly integrally attached to the catheter body; a microporous coating at least partially bonded to the distal end assembly; and a primer coating underlying at least a portion of the microporous coating, wherein the primer coating bonds the microporous coating to the distal end assembly.
Claim 3
Dependent Claim
13 words
The catheter device of claim 1, wherein the microporous coating comprises regenerated cellulose.
Claim 4
Dependent Claim
14 words
The catheter device of claim 1, wherein the primer coating comprises a base primer.
Claim 5
Dependent Claim
12 words
The catheter device of claim 1, wherein the primer coating comprises cyanoacrylate.
Claim 6
Dependent Claim
12 words
The catheter device of claim 1, wherein the primer coating comprises epoxy.
Claim 7
Dependent Claim
30 words
The catheter device of claim 1, wherein the distal end assembly comprises a non-conductive polymer body, and wherein the polymer body, primer coating and microporous coating form a covalent bond.
Claim 8
Dependent Claim
23 words
The catheter device of claim 7, wherein the distal end assembly further comprises a plurality of conductive electrodes formed on the polymer body.
Claim 9
Dependent Claim
24 words
The catheter device of claim 8, wherein the primer coating covers at least a portion of the polymer body underlaying one or more electrodes.
Claim 10
Dependent Claim
79 words
A catheter device, comprising: an elongate catheter body having a distal end; an electrode carrying structure integrally attached to the catheter body distal end, the electrode carrying structure comprising a non-conductive polymer body, and a plurality of electrodes formed on the polymer body; an adhesive material chemically bonded to the polymer body; and a microporous coating substantially covering the electrode carrying structure and chemically bonded to the adhesive material so as to be substantially fixed to the polymer body.
Claim 11
Dependent Claim
79 words
A catheter device, comprising: an elongate catheter body having a distal end; an electrode carrying structure integrally attached to the catheter body distal end, the electrode carrying structure comprising a non-conductive polymer body, and a plurality of electrodes formed on the polymer body; an adhesive material chemically bonded to the polymer body; and a microporous coating substantially covering the electrode carrying structure and chemically bonded to the adhesive material so as to be substantially fixed to the polymer body.
Claim 12
Dependent Claim
22 words
The catheter device of claim 9, wherein the microporous coating has a porosity greater than the molecular size of the adhesive material.
References Cited (Backward Citations)
US3568660A
Cited
US3635212A
Cited
US3910008A
Cited
US4402319A
Cited
US5507744A
Cited
US5531715A
Cited
US5509899A
Cited
US5804318A
Cited
WO1997045156A2
Cited
US5954702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-01 | 2004-01-31 | 2004-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-01 | 2008-01-31 | 2008-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-01 | 2012-01-31 | 2012-08-01 | $7700.00 | Window Closed / Lapsed |