US4842577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plaster structural assembly for iontophoresis
Assignee: Astellas Pharma Inc
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Filing: 1987-10-16
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Granted: 1989-06-27
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Expires: 2007-10-16
Abstract
Abstract A novel plaster structural assembly is provided for iontophoresis wherein th e assembly is comprised of an electrode layer and a medicament-containing layer in which a water supplying layer is disposed between the electrode layer and the medicament-containing layer with a sealing cover disposed on the outside of the electrode layer. A method for using the structural assembly for iontophoresis is also provided.
Inventors
- 👤 Yutaka Konno
- 👤 Mitsuo Mitomi
- 👤 Takashi Sonobe
- 👤 Shumpei Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:24
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/20; A61N1/30; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0428; A61N1/0448; A61N1/0432; A61N1/0436
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
55 words
A plaster structural assembly for iontophoresis comprising an electrode layer and a medicament containing layer, wherein a water supplying layer is disposed between the electrode layer and the medicament-containing layer and further a sealing cover is formed at the outside of the electrode layer, said water supplying layer composed of water and water retentive fibers.
Claim 2
Dependent Claim
55 words
A plaster structural assembly for iontophoresis comprising an electrode layer and a medicament containing layer, wherein a water supplying layer is disposed between the electrode layer and the medicament-containing layer and further a sealing cover is formed at the outside of the electrode layer, said water supplying layer composed of water and water retentive fibers.
Claim 3
Dependent Claim
60 words
A plaster structural assembly for iontophoresis comprising an electrode layer and a medicament containing layer, wherein a water supplying layer is disposed between the electrode layer and the medicament-containing layer, said water supplying layer being composed of a water-containing self adhesive layer and a water-containing layer, and further a sealing cover is formed at the outside of the electrode layer.
Claim 4
Dependent Claim
60 words
A plaster structural assembly for iontophoresis comprising an electrode layer and a medicament containing layer, wherein a water supplying layer is disposed between the electrode layer and the medicament-containing layer, said water supplying layer being composed of a water-containing self adhesive layer and a water-containing layer, and further a sealing cover is formed at the outside of the electrode layer.
Claim 5
Dependent Claim
23 words
The plaster structural assembly as claimed in claim 2, wherein the thickness of the medicament-containing layer is from 0.1 mm to 1.0 mm.
Claim 6
Dependent Claim
29 words
The plaster structural assembly as claimed in claim 8 wherein the medicament-containing layer is from about 1/2 to about 1/3 of the area of said water-containing self adhesive layer.
Claim 7
Dependent Claim
44 words
A method for administering a medicament to a subject in need of such medicament by absorption of said medicament by iontophoresis, said method comprising contacting the skin of said subject with the plaster structural assembly of claim 2 and thereafter applying an electric current.
References Cited (Backward Citations)
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US4383529A
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US4557723A
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US4722726A
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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) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |