US3814097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dressing
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1973-01-24
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Granted: 1974-06-04
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Expires: 1993-01-24
Abstract
Abstract A dressing for administering a drug through the skin of a host comprising a reservoir for the drug and, located between the reservoir and the skin of the host when the dressing is in use, a pad provided with tiny spikes. These tiny spikes augment the absorption of the drug without causing irritation.
Inventors
- 👤 D Ganderton
- 👤 Ainsh J Mc
- 👤 G Varney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:21
CPC Classifications
A; A61; A61M; A61M37/00; A61M37/0015; A61F; A61F13/00; A61F13/00051; A61F13/00063; A61F13/05; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K9/0021; A61F2013/00089; A61F2013/0017; A61M2037/0007; A61M2037/0023
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
99 words
A pad for augmenting the absorption of a liquid formulation of a pharmacologically active material through the skin of a host comprising a sheet of material, a plurality of tiny hollow fibres passing through the sheet and projecting from at least one face of said sheet, said fibres having an external diameter at the end of the fibre in the range 8 Mu m. to 100 Mu m. and projecting from said sheet from 20 Mu m. to 1,000 Mu m and a means on one side of said sheet material constituting a means for supplying said liquid material.
Claim 2
Dependent Claim
99 words
A pad for augmenting the absorption of a liquid formulation of a pharmacologically active material through the skin of a host comprising a sheet of material, a plurality of tiny hollow fibres passing through the sheet and projecting from at least one face of said sheet, said fibres having an external diameter at the end of the fibre in the range 8 Mu m. to 100 Mu m. and projecting from said sheet from 20 Mu m. to 1,000 Mu m and a means on one side of said sheet material constituting a means for supplying said liquid material.
Claim 3
Dependent Claim
19 words
A pad according to claim 1 wherein the sheet is provided with a multitude of said tiny hollow fibres.
Claim 4
Dependent Claim
13 words
A pad according to claim 1 wherein the fibres are composed of glass.
Claim 5
Dependent Claim
14 words
A pad according to claim 3 wherein the sheet is made from cellulose acetate.
Claim 6
Dependent Claim
67 words
A dressing for administering a liquid formulation of a pharmacologically active material to a host through the skin of said host, comprising a pad according to claim 1 said supply means comprising a reservoir for receiving a liquid formulation of the pharmacologically active material located to permit said liquid formulation, when present, to pass from said reservoir and through said pad to the skin of said host.
Claim 7
Dependent Claim
18 words
A dressing according to claim 5 wherein the reservoir comprises a case with the pad forming one wall.
Claim 8
Dependent Claim
19 words
A dressing according to claim 5 which additionally includes pressure applying means for increasing the pressure in the reservoir.
Claim 9
Dependent Claim
21 words
A dressing according to claim 5 which additionally includes securing means for attaching the dressing to the skin of the host.
Claim 10
Dependent Claim
28 words
A dressing according to claim 5 wherein the reservoir contains a plug for the insertion of a means for supplying said liquid formulation of the pharmacologically active material.
Claim 11
Dependent Claim
14 words
A dressing according to claim 9 wherein the pharmacologically active material is a polypeptide.
References Cited (Backward Citations)
US25637A
Cited
US3072122A
Cited
US3023750A
Cited
US3062212A
Cited
US3167073A
Cited
US3416530A
Cited
US3545439A
Cited
US3595231A
Cited
US3565075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |