Patent US2386554A successfully refreshed from Google Patents.
USH516H
Expired / Lapsed
US
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Iontophortetic device
Assignee: Medtronic Inc
•
Filing: 1981-03-05
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Granted: 1988-09-06
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Expires: 2001-03-05
Abstract
Abstract An improved iontophoretic device for introducing an ionic substance into body tissue. A compact casing contains all the electronic circuitry necessary for generation and control of an iontrophoretic current. Stainless steel electrode plates are mounted directly on the casing and are electrically coupled to the electronics within. The device may be used in a simplified iontophoretic procedure: adhesive pads containing the ionic substance to be driven into the body tissue are applied to the stainless steel plates and the entire iontophoretic device is then affixed to the body by the adhesive pads and a safety strap, thus permitting normal patient movement during the iontophoretic process.
Inventors
- 👤 Gary A. Lattin
- 👤 Richard Spevak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:51
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0428; A61N1/0432; A61N1/044; A61N1/18; A61N1/20; A61N1/22; A61N1/24; A61N1/32; A61N1/325
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
77 words
A device for use in iontophoretically introducing an ionic substance into body tissue, comprising: a flexible casing of insulative material; an electrical current source mounted within said casing; flexible active electrode plate means located on said casing for mounting on said casing an active electrode element containing said ionic substance and for electrically coupling said electrode element to said current source; and flexible indifferent electrode means mounted on said casing for electrically coupling to said current source.
Claim 2
Independent Claim
77 words
A device for use in iontophoretically introducing an ionic substance into body tissue, comprising: a flexible casing of insulative material; an electrical current source mounted within said casing; flexible active electrode plate means located on said casing for mounting on said casing an active electrode element containing said ionic substance and for electrically coupling said electrode element to said current source; and flexible indifferent electrode means mounted on said casing for electrically coupling to said current source.
Claim 3
Dependent Claim
44 words
A device as described in claim 1 wherein said indifferent electrode means comprises an indifferent electrode plate means located on said casing for mounting on said casing an indifferent electrode element and for electrically coupling said indifferent electrode element to said electrical current source.
Claim 4
Dependent Claim
29 words
A device as described in claim 2 wherein said active electrode plate means and said indifferent electrode plate means each comprise a layer of metal on said flexible casing.
Claim 5
Dependent Claim
49 words
A device as described in claim 2 further comprising means extending between said active and said indifferent electrode plate means for preventing electrical contact between said active and indifferent electrode elements when said active and indifferent electrode elements are mounted on said active and indifferent electrode plate means respectively.
Claim 6
Dependent Claim
26 words
A device as described in claim 4 wherein said means extending between said active and indifferent electrode plate means comprises a raised portion of said casing.
Claim 7
Independent Claim
81 words
A device for use in iontophoretically introducing an ionic substance into body tissue, comprising: a flexible casing; a source of electrical current, mounted within said flexible casing; and means for mounting a drug containing electrode and an indifferent electrode, comprising: a first flexible metallic plate, mounted to said casing and coupled to said source of electrical current; and a second flexible metallic plate, mounted to said casing spaced from said first metallic plate and coupled to said source of electrical current.
Claim 8
Independent Claim
81 words
A device for use in iontophoretically introducing an ionic substance into body tissue, comprising: a flexible casing; a source of electrical current, mounted within said flexible casing; and means for mounting a drug containing electrode and an indifferent electrode, comprising: a first flexible metallic plate, mounted to said casing and coupled to said source of electrical current; and a second flexible metallic plate, mounted to said casing spaced from said first metallic plate and coupled to said source of electrical current.
References Cited (Backward Citations)
US568095A
Cited
GB410009A
Cited
US2590876A
Cited
US2784715A
Cited
US3025858A
Cited
US3163166A
Cited
US3215139A
Cited
US3122137A
Cited
US3315665A
Cited
CH424006A
Cited
US3472233A
Cited
US3699963A
Cited
DE1965195C3
Cited
US3716054A
Cited
US3794910A
Cited
DE2147704C
Cited
US3989050A
Cited
US4002221A
Cited
US3955583A
Cited
US4094822A
Cited
US3964477A
Cited
DE2558525A1
Cited
US4019510A
Cited
FR2307554A1
Cited
US4051842A
Cited
US4274420A
Cited
US4125110A
Cited
FR2336144B1
Cited
US4066078A
Cited
FR2351670A2
Cited
DE2724461C2
Cited
US4141359A
Cited
US4211222A
Cited
US4082087A
Cited
US4325367A
Cited
US4273135A
Cited
US4352359A
Cited
DE2740270C2
Cited
US4307717A
Cited
US4177817A
Cited
US4317457A
Cited
SU706092A1
Cited
US4209020A
Cited
US4239046A
Cited
GB2030453B
Cited
US4230105A
Cited
US4250878A
Cited
US4391278A
Cited
GB2045088B
Cited
US4257424A
Cited
US4248247A
Cited
US4381012A
Cited
US4383529A
Cited
US4416274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-06 | 1992-03-07 | 1992-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-06 | 1996-03-07 | 1996-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-06 | 2000-03-07 | 2000-09-06 | $7700.00 | Window Closed / Lapsed |