US4919648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High tack drug patch
Assignee: Drug Delivery Systems Inc
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Filing: 1988-05-20
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Granted: 1990-04-24
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Expires: 2008-05-20
Abstract
Abstract A transdermal drug patch for delivering at least one drug to a patient through the skin comprises: (a) At least two electrode constructions separated from each other; (b) Drug reservoir means in at least one of the electrode constructions; (c) An electrical circuit including a power source, electrodes constructions with conductive elements, and reservoir means connected together; (d) Optional cover means; and (e) Adhesive means for affixing the patch to the patient's skin, augmented by a plurality of isolated spots of high tack gel, either in arrays or random positions, whereby the patch is more easily removed and replaced than if the adhesive means were homogeneous.
Inventors
- 👤 Dan Sibalis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:43
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0408; A61N1/0428; A61N1/0432; A61N1/044; A61M; A61M37/00; A61N1/0448
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
141 words
A transdermal drug patch for delivering at least one drug to a patient through the skin comprising: at least two electrodes forming said patch and separated from each other, each electrode including a conductive element; drug reservoir means, in at least one of said electrodes; a circuit, including a power source, for supplying power to and connected to said electrodes at such conductive elements and said reservoir means; and adhesive means for affixing said patch to the skin, this adhesive means augmented by a plurality of isolated spots of high tack gel traversing the drug reservoir means extending from the bottom of the patch to at least one electrode above the drug reservoir means, whereby the patch is more easily removed and replaced than if the adhesive means were homogeneous, and whereby upon adherence the drug is delivered through the skin.
Claim 2
Dependent Claim
141 words
A transdermal drug patch for delivering at least one drug to a patient through the skin comprising: at least two electrodes forming said patch and separated from each other, each electrode including a conductive element; drug reservoir means, in at least one of said electrodes; a circuit, including a power source, for supplying power to and connected to said electrodes at such conductive elements and said reservoir means; and adhesive means for affixing said patch to the skin, this adhesive means augmented by a plurality of isolated spots of high tack gel traversing the drug reservoir means extending from the bottom of the patch to at least one electrode above the drug reservoir means, whereby the patch is more easily removed and replaced than if the adhesive means were homogeneous, and whereby upon adherence the drug is delivered through the skin.
Claim 3
Dependent Claim
17 words
A transdermal drug patch as in claim 1, wherein said electrodes are generally of the same structure.
Claim 4
Dependent Claim
15 words
A transdermal drug patch as in claim 1, wherein said electrodes are of different structure.
Claim 5
Dependent Claim
15 words
A transdermal drug patch as in claim 1, wherein said electrodes are of different size.
Claim 6
Dependent Claim
31 words
A transdermal said drug patch as in claim 1, wherein at least two of said electrodes include said drug reservoir means and each said drug reservoir means contains different said drugs.
Claim 7
Dependent Claim
37 words
A transdermal drug patch as in claim 1, wherein the high tack gel spots are elongated in shape and comprise an adhesive gel of greater tack than the adhesive means for affixing the patch to the skin.
Claim 8
Dependent Claim
36 words
A transdermal drug patch as in claim 1, wherein the high tack gel spots are substantially spherical and comprise an adhesive gel of greater tack than the adhesive means for affixing the patch to the skin.
Claim 9
Dependent Claim
19 words
A transdermal drug patch as in claim 1, wherein the high tack gel spots are aligned in uniform rows.
Claim 10
Dependent Claim
17 words
A transdermal drug patch as in claim 1, wherein the high tack gel spots are uniformly placed.
Claim 11
Dependent Claim
19 words
A transdermal drug patch as in claim 1, further comprising cover means at least partially enclosing the reservoir means.
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) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |