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US4515162A
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Electrode pad
Assignee: Nitto Denko Corp
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Filing: 1981-09-14
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Granted: 1985-05-07
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Expires: 2001-09-14
Abstract
Abstract An electrode pad comprising a tacky crosslinked hydrogel adhered to an electrode terminal plate, through which electrical signals from the living body can be transmitted to an electric recording apparatus.
Inventors
- 👤 Katsuhiro Yamamoto
- 👤 Katsuo Matsumoto
- 👤 Yoshiyuki Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:51
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/25; A61B5/251; A61B5/257; C; C09; C09J; C09J133/00; C09J133/02; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/14; C08L63/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
39 words
An electrode pad consisting essentially a tacky cross-linked electrically conductive hydrogel, wherein said hydrogel comprises at least one of polyacrylic acid and polyacrylic acid salt, water, and a cross-linking compound containing at least two epoxy groups in the molecule.
Claim 2
Dependent Claim
39 words
An electrode pad consisting essentially a tacky cross-linked electrically conductive hydrogel, wherein said hydrogel comprises at least one of polyacrylic acid and polyacrylic acid salt, water, and a cross-linking compound containing at least two epoxy groups in the molecule.
Claim 3
Dependent Claim
34 words
An electrode pad as in claim 1, wherein at least one layer of a woven fabric is provided to support the hydrogel, and the hydrogel is in contact with said at least one layer.
Claim 4
Dependent Claim
28 words
An electrode pad as recited in claim 2, wherein a frame of film is provided on a side of the electrode pad intended for contacting the living body.
Claim 5
Dependent Claim
36 words
The electrode pad as recited in claim 3, wherein the frame is positioned on the fabric layer so as to form a layered structure wherein the layers are in the order of hydrogel, fabric, and frame.
Claim 6
Dependent Claim
24 words
An electrode pad as in claim 2, wherein said hydrogel has a two-layered structure with one layer being a weakly tacky or non-tacky layer.
Claim 7
Dependent Claim
20 words
An electrode pad as in claim 1, wherein the thickness of said hydrogel is from about 0.5 to 10 m.
References Cited (Backward Citations)
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Cited
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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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |