Patent US3598122A successfully refreshed from Google Patents.
US3598122A
Expired / Lapsed
US
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Bandage for administering drugs
Assignee: Alza Corp
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Filing: 1969-04-01
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Granted: 1971-08-10
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Expires: 1989-04-01
Abstract
Abstract Bandage for use in the continuous administration of systemically active drugs by absorption through the skin or oral mucosa comprising a backing member having on one surface thereof a reservoir containing a systemically active drug. The reservoir has a wall distant from the backing member and permeable to passage of the drug. A pressure-sensitive adhesive layer, also permeable to passage of the drug, is carried by the reservoir. The drug is in a form acceptable for absorption through the skin or the mucosa of the mouth.
Inventors
- 👤 Alejandro Zaffaroni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:52
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/70; A61K9/7023; A61K9/703; A61K9/7084; A61F; A61F9/00; A61F9/0008; A61F9/0017; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/58; A61M; A61M31/00; A61M31/002; A61M37/00
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
127 words
A medical bandage for use in the continuous administration to circulation of controlled quantities of systemically active drugs over a prolonged period of time by absorption through the external body skin or mucosa, said bandage comprising a sandwich including (1) a backing member; (2) a discrete, middle reservoir layer containing a systemically active drug, which reservoir layer is comprised of systemically active drug formulation confined within a wall member, said wall member being formed from drug release rate controlling material to continuously meter the flow of drug from the said reservoir to the skin or mucosa at a controlled and predetermined rate over a prolonged period of time; and (3) a surface of a pressure-sensitive adhesive adapted for contact with the skin or mucosa of a patient.
Claim 2
Dependent Claim
127 words
A medical bandage for use in the continuous administration to circulation of controlled quantities of systemically active drugs over a prolonged period of time by absorption through the external body skin or mucosa, said bandage comprising a sandwich including (1) a backing member; (2) a discrete, middle reservoir layer containing a systemically active drug, which reservoir layer is comprised of systemically active drug formulation confined within a wall member, said wall member being formed from drug release rate controlling material to continuously meter the flow of drug from the said reservoir to the skin or mucosa at a controlled and predetermined rate over a prolonged period of time; and (3) a surface of a pressure-sensitive adhesive adapted for contact with the skin or mucosa of a patient.
Claim 3
Dependent Claim
28 words
The bandage as defined by claim 1, wherein the reservoir layer (2) is comprised of a walled container having an interior chamber containing the systemically active drug formulation.
Claim 4
Dependent Claim
35 words
The bandage as defined by claim 1, wherein the reservoir layer (2) is comprised of a matrix of the drug release rate controlling wall material, said matrix having the systemically active drug formulation distributed therethrough.
Claim 5
Dependent Claim
22 words
The bandage as defined by claim 1, wherein the systemically active drug formulation is soluble in the drug release rate controlling material.
Claim 6
Dependent Claim
21 words
The bandage as defined by claim 1, wherein the pressure-sensitive adhesive is permeable to passage of the systemically active drug formulation.
Claim 7
Dependent Claim
16 words
The bandage as defined by claim 1, wherein the drug formulation comprises a pharmacologically acceptable solvent.
Claim 8
Dependent Claim
26 words
The bandages as defined by claim 1, further comprising a solubility membrane (4) interposed between said reservoir layer (2) and said surface of pressure-sensitive adhesive (3).
Claim 9
Dependent Claim
17 words
The bandage as defined by claim 1, wherein said drug release rate controlling material is silicone rubber.
Claim 10
Dependent Claim
25 words
The bandage as defined by claim 1, wherein said drug release rate controlling material is a hydrophilic polymer of an ester of an olefinic acid.
Claim 11
Dependent Claim
41 words
The bandage as defined by claim 1, wherein at least that portion of the wall member comprising the reservoir layer (2) which is adapted to be brought contiguous the skin as mucosa is formed from the drug release rate controlling material.
Claim 12
Dependent Claim
23 words
The bandage as defined by claim 1, wherein the wall member comprising the reservoir layer (2) consists of drug release rate controlling material.
Claim 13
Dependent Claim
27 words
The bandage as defined by claim 1, wherein the outer surface of the wall member comprising the reservoir layer (2) also defines the said backing member (1).
Claim 14
Dependent Claim
27 words
The bandage as defined by claim 1, wherein the pressure-sensitive adhesive is adapted to provide a liquidtight adhesive seal between the skin or mucosa and the bandage.
Claim 15
Dependent Claim
23 words
The bandage as defined by claim 1, wherein the surface of a pressure-sensitive adhesive (3) is covered with a protective release coating (5).
Claim 16
Dependent Claim
23 words
The bandage as defined by claim 1, wherein the outer surface of the backing member (1) is coated with a low-adhesion backsize (6).
References Cited (Backward Citations)
US2629378A
Cited
US3053255A
Cited
US3249109A
Cited
US3339546A
Cited
US3444858A
Cited
US3520949A
Cited
US3464413A
Cited
US3518340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |