US3590822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheters
Assignee: Electro Catheter Corp
•
Filing: 1968-04-03
•
Granted: 1971-07-06
•
Expires: 1988-04-03
Abstract
Abstract Electroconductive catheters and methods of manufacture thereof.
Inventors
- 👤 Bernard Ackerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:58
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/0565; A61M; A61M25/00; A61M25/0009; A61M25/0012
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
Catheter comprising, in combination, an elongate flexible electrically conductive core, an electrode adhered to and surrounding the distal end portion of said core and an electrically nonconductive sheath extending longitudinally about said core from said electrode, said core comprising stranded wire having individual wire elements provided with spacings or interstices therebetween, the end portion of said sheath extending generally inwardly into said spacings or interstices between each of said wire elements of said core to provide mechanical locking therebetween, and said sheath extending about the adjacent end of said electrode to form a smooth juncture therewith whereby said distal end portion of said catheter is substantially impervious to fluids and said electrode is precluded from becoming separated from said core by being secured to said core and by being secured by the bonding of said sheath to the walls of said electrode.
Claim 2
Dependent Claim
142 words
Catheter comprising, in combination, an elongate flexible electrically conductive core, an electrode adhered to and surrounding the distal end portion of said core and an electrically nonconductive sheath extending longitudinally about said core from said electrode, said core comprising stranded wire having individual wire elements provided with spacings or interstices therebetween, the end portion of said sheath extending generally inwardly into said spacings or interstices between each of said wire elements of said core to provide mechanical locking therebetween, and said sheath extending about the adjacent end of said electrode to form a smooth juncture therewith whereby said distal end portion of said catheter is substantially impervious to fluids and said electrode is precluded from becoming separated from said core by being secured to said core and by being secured by the bonding of said sheath to the walls of said electrode.
Claim 3
Dependent Claim
31 words
Catheter defined in claim 1, wherein the proximal end portion of said sheath is constructed and secured to said core in substantially the same fashion as that of said distal end.
Claim 4
Dependent Claim
25 words
Catheter defined in claim 2 wherein the distal end portion of said sheath partially overlies said electrode and tapers generally inwardly toward the distal end.
Claim 5
Dependent Claim
24 words
Catheter defined in claim 1 wherein said core comprises regular-lay wire rope fabricated of brass-coated stainless steel wire and said sheath comprises polyethylene plastic.
Claim 6
Dependent Claim
27 words
Catheter defined in claim 4 wherein at least the distal end portion of said sheath extends entirely laterally through said core interstices to provide fluid-impervious sealing thereof.
Claim 7
Dependent Claim
54 words
Catheter defined in claim 1, wherein said electrode comprises a generally cylindrical sleeve, the distal end portion of said core being disposed within said sleeve, and wherein said electrode further comprises solder-sealing the sleeve and contacting the end of the core for providing a rounded end to the electrode and bonding the core thereto.
References Cited (Backward Citations)
US2479919A
Cited
US3111451A
Cited
US3087486A
Cited
US3367339A
Cited
US3348548A
Cited
US3333045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |