US4813425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fetal electrode product
Assignee: AMERICA HOME PRODUCTS Corp A CORP OF
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Filing: 1987-08-26
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Granted: 1989-03-21
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Expires: 2007-08-26
Abstract
Abstract A fetal electrode product comprises a guide tube, an electrode assembly having a spiral electrode extending from its forward end and a flexible drive tube extending through said guide tube and adapted to engage said electrode assembly for rotating said spiral electrode. The guide tube comprises two relatively rigid sections and an intermediate flexible section such that the curvature of the guide tube can be changed during application of the electrode.
Inventors
- 👤 Michael J. Malis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:48
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/43; A61B5/4306; A61B5/4343; A61B5/4362; A61B1/00; A61B1/005; A61B5/24; A61B5/25; A61B5/279; A61B5/28; A61B5/283; A61B5/288
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A fetal electrode product, comprising a guide tube, an electrode assembly having a forward end and spiral electrode extending from said forward end, and a flexible drive tube extending through said guide tube, said drive tube releasably engaging said electrode assembly for rotating said spiral electrode, said guide tube being mechanically free of said drive tube and electrode assembly whereby said guide tube remains stationary when said drive tube and electrode assembly are rotated, said guide tube comprising two relatively rigid sections and an intermediate flexible section such that the curvature of the guide tube can be changed during application of the electrode.
Claim 2
Dependent Claim
103 words
A fetal electrode product, comprising a guide tube, an electrode assembly having a forward end and spiral electrode extending from said forward end, and a flexible drive tube extending through said guide tube, said drive tube releasably engaging said electrode assembly for rotating said spiral electrode, said guide tube being mechanically free of said drive tube and electrode assembly whereby said guide tube remains stationary when said drive tube and electrode assembly are rotated, said guide tube comprising two relatively rigid sections and an intermediate flexible section such that the curvature of the guide tube can be changed during application of the electrode.
Claim 3
Dependent Claim
15 words
An electrode product according to claim 1 wherein said flexible section comprises an elongated bellows.
Claim 4
Dependent Claim
14 words
An electrode product according to claim 1 wherein said flexible section comprises a spring.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-20 | 1992-09-19 | 1993-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-20 | 1996-09-19 | 1997-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-20 | 2000-09-19 | 2001-03-21 | $7700.00 | Window Closed / Lapsed |