US3574305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode serving for the detection of electrophysiological potentials or currents
Assignee: Fritz Hellige und Co GmbH
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Filing: 1968-09-05
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Granted: 1971-04-13
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Expires: 1988-09-05
Abstract
Abstract A diagnostic device for facilitating the measurement of electrophysiological potentials or currents. An electrode of sintered construction and of disc configuration is retained within a holding member of the diagnostic device. The electrode is a mixture of silver powder and silver salt at defined ratios, and the silver salt being within a preferred solubility level. The holding member has a plurality of radial ribs adapted to provide free space wherein an electrolytically conductive paste may be placed so as to prevent direct contact between the electrode and the skin surface of the patient.
Inventors
- 👤 Gerhard L Muhl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:30
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/263; A61B5/265; A61B2562/00; A61B2562/02; A61B2562/0209; A61B2562/0215; A61B2562/0217
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
102 words
A diagnostic device comprising: a rigid nonconductive holding member having an opening from the top to the bottom thereof and further having a plurality of radial ribs adapted to hold an electrolytically conductive paste; electrode means inserted within said opening of said holding member for detecting potentials and currents; terminal means located within said opening of said rigid nonconductive holding member for maintaining said potentials and transferring currents between said electrode means and said terminal means; and clamping means wedged between said terminal means and said opening of said rigid nonconductive holding member for retaining said terminal means against said electrode means.
Claim 2
Dependent Claim
102 words
A diagnostic device comprising: a rigid nonconductive holding member having an opening from the top to the bottom thereof and further having a plurality of radial ribs adapted to hold an electrolytically conductive paste; electrode means inserted within said opening of said holding member for detecting potentials and currents; terminal means located within said opening of said rigid nonconductive holding member for maintaining said potentials and transferring currents between said electrode means and said terminal means; and clamping means wedged between said terminal means and said opening of said rigid nonconductive holding member for retaining said terminal means against said electrode means.
Claim 3
Dependent Claim
40 words
A diagnostic device as recited in claim 1 wherein said opening is located in proximity of the center of said holding member and said radial ribs extend outwardly from said opening to approximately the outer rim of said holding member.
Claim 4
Dependent Claim
24 words
A diagnostic device as recited in claim 2 wherein said opening is of circular construction and said electrode means is of a disc construction.
Claim 5
Dependent Claim
35 words
A diagnostic device as recited in claim 1 wherein said terminal means has a bottom ridge of a larger diameter than the major portion of said terminal means and said clamping means is a snapring.
Claim 6
Dependent Claim
40 words
A diagnostic device as recited in claim 3 wherein said electrode means is of sintered construction comprising a mixture of silver powder and silver salt, said silver salt having a solubility of less than 100.10 6 g./ 100 m1. H20.
Claim 7
Dependent Claim
27 words
A diagnostic device as recited in claim 5 wherein said mixture includes said silver powder and said silver salt at a ratio of between 30:70 and 50:50.
Claim 8
Dependent Claim
24 words
A diagnostic device as recited in claim 5 wherein said mixture includes said silver powder and said silver salt at a ratio of 40:60.
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |