IP Library › Granted Patent US 7,740,879
Granted Patent B2
US 7,740,879 · App. 11/333,602 · Granted Jun 22, 2010

Abuse resistant transdermal drug delivery patch

Assignee: Harrogate Holdings
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Quick Facts
Patent No.
US 7,740,879
App. No.
11/333,602
Granted
Jun 22, 2010
Kind
B2
Abstract

A transdermal drug delivery patch has an excipient matrix containing an agonist for administration across the skin of a user, with the matrix further containing a plurality of spaced apart hollow cilia filled with an antagonist, whereby if an abuser attempts to physically remove the agonist the cilia will break releasing the antagonist, or if the abuser attempts to use a solvent to remove the agonist the cilia will dissolve releasing the antagonist, thereby blocking the effect the abuser is attempting to attain by concentrating the agonist for oral ingestion or by hypodermic needle injection.

Claims (40)

1. A transdermal drug delivery patch for the delivery of a drug across the skin of a user comprising:

a main body providing an occlusive covering on the skin of a user, including:

an outer face;

an inner face in combination with said outer face forming a hollow cavity below said inner face;

a hollow core being formed between said outer and inner faces;

a plurality of parallel elongated cilia projecting from said inner face into said hollow cavity, said plurality of cilia being spaced apart and each having a diameter along their lengths ranging from 0.01 mm to 1.0 mm, and a hollow tubular core extending from the hollow core formed between said outer and inner faces;

an excipient matrix filling portions of said cavity between said plurality of parallel elongated cilia;

an agonist contained in said matrix between said plurality of elongated cilia, respectively;

an antagonist being contained both within the hollow tubular core of each of said plurality of cilia, respectively, and within the hollow core between said outer and inner faces, respectively;

said plurality of cilia being rigid, and having thinner walls than the walls of said outer face, whereby upon rupture or dissolvement of said plurality of cilia by an abuser, said cilia will release their associated antagonist to block the desired effect an abuser is attempting to obtain by concentrating said agonist to ingest it orally or through injection; and

means for securing said main body to a desired location on the skin of a user.

2. The patch of claim 1 , wherein said securing means includes:

a flange formed about the perimeter of said main body; and

a pharmacological adhesive coated onto a bottom portion of said flange.

3. The patch of claim 2 , further including:

a peelable protective layer of material overlying said flange and matrix over an entire bottom portion of said main body.

4. The patch of claim 1 , further including a backing layer or outer layer of material overlaying and secured to said outer face of said main body.

5. The patch of claim 4 , wherein said securing means includes:

said outer layer having a flange formed about its perimeter; and

a pharmacological adhesive coated onto a bottom portion of said flange.

6. The patch of claim 5 , further including:

a peelable protective layer of material overlying bottom portions of said flange, and said main body.

7. The patch of claim 1 , wherein said agonist is a narcotic agonist, and said antagonist is a narcotic antagonist.

8. The patch of claim 1 , wherein said main body is formed from films made from materials selected from the group consisting of polyesters, polyethylenes, polymethanes, and polyvinyl acetates.

9. The patch of claim 2 , wherein, said adhesive is selected from the group consisting of polyacrylate, polysiloxanes, polyisobutylenes, silicone polymers, and polybutadiene.

10. The patch of claim 1 , wherein said excipient matrix is selected from the group consisting of guar, acacia, xanthan gum, jelling agent, carboxypolymethylene, polyethylene, and polypropylene.

11. The patch of claim 3 , wherein said peelable protective layer is selected from the group consisting of polymeric material, metalized polymeric material, polypropylene, polyethylene, and paper.

12. The patch of claim 1 , wherein said main body has a surface area ranging from 5 cm 2 to 50 cm 2 , and a thickness between its inner and outer faces ranging from 0.001 inch to 0.05 inch.

13. The patch of claim 1 , wherein said plurality of cilia are spaced within a range from 1/cm 2 to 100/cm 2 .

14. The patch of claim 5 , wherein said peelable protective layer is selected from the group consisting of polymeric material, metalized polymeric material, polypropylene, polyethylene, and paper.

15. The patch of claim 4 , wherein the material for said backing or outer layer is selected from the group consisting of polyether block amide copolymers, polyethylene, methyl methacrylate block copolymers, polyurethanes, silicone elastomers, polyester block copolymers that are composed of hard and soft segments, rubber-based polyisobutylene, styrene, styrene-butadiene and styrene-isoprene copolymers, polyethylene, polypropylene, polyester terephthalate, and a laminate of two or more of the aforesaid.

16. The patch of claim 4 , further including:

said main body having a surface area ranging from 5 cm 2 to 50 cm 2 , and a thickness between its inner and outer faces ranging from 0.001 inch to 0.05 inch; and

said backing or outer layer having a thickness ranging from 0.0005 inch to 0.003 inch.

17. The patch of claim 4 , wherein said agonist is a narcotic agonist, and said antagonist is a narcotic antagonist.

18. The patch of claim 15 wherein said main body is formed, from films made from materials selected from the group consisting of polyesters, polyethylenes, polymethanes, and polyvinyl acetates.

19. The patch of claim 5 , wherein said adhesive is selected from the group consisting of polyacrylate, polysiloxanes, polyisobutylenes, silicone polymers, and polybutadiene.

20. The patch of claim 4 , wherein said excipient matrix is selected from the group consisting of guar, acacia, xanthan gum, jelling agent, carboxypolymethylene, polyethylene, and polypropylene.

21. The patch of claim 6 , wherein said peelable protective layer is selected from the group consisting of polymeric material, metalized polymeric material, polypropylene, polyethylene, and paper.

22. The patch of claim 4 , wherein said plurality of cilia are spaced within a range from 1/cm 2 to 110/cm 2 .

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 25, 2015
From: HARROGATE HOLDINGS, LIMITED
To: HARROGATE HOLDINGS NEW JERSEY INC.
Reel/Frame 035253/0258 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 4, 2015
From: HARROGATE HOLDINGS, LIMITED
To: HARROGATE HOLDINGS NEW JERSEY INC.
Reel/Frame 034886/0967 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE NAME PREVIOUSLY RECORDED AT REEL: 017640 FRAME: 0547. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Feb 2, 2015
From: ROYDS, ROBERT B.
To: HARROGATE HOLDINGS, LIMITED
Reel/Frame 034871/0355 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 9, 2006
From: ROYDS, ROBERT B.
To: HARROGATE HOLDINGS
Reel/Frame 017640/0547 →
Continuity (1)
Related Publication 20070166233A1 · Jul 19, 2007