Method and device for coating a continuous strip of microprojection members
First Claim
1. A device for applying a biologically active agent formulation to a microprojection member having a plurality of stratum corneum-piercing microprojections, comprising a flexible conveyor strip having said microprojection member mounted thereon, a product drum, wherein said conveyor strip is spiral wrapped around said product drum, and a reservoir of said biologically active agent formulation adapted to cooperate with said product drum to transfer at least one application of said biologically active agent onto said microprojections as said conveyor strip travels around said product drum.
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Accused Products
Abstract
The present invention provides a device and method for selectively providing multiple applications of an agent formulation on the skin piercing portions of a microprojection member to form an agent-containing coating on the microprojections. The formulation is dried to form a solid coating which contains the agent. A continuous conveyor strip bearing multiple microprojection members is spiral wrapped around a product drum so that each microprojection member is conveyed past a reservoir a plurality of times. The reservoir is configured to transfer an application of agent formulation onto the microprojection member each time it passes the reservoir.
20 Citations
37 Claims
- 1. A device for applying a biologically active agent formulation to a microprojection member having a plurality of stratum corneum-piercing microprojections, comprising a flexible conveyor strip having said microprojection member mounted thereon, a product drum, wherein said conveyor strip is spiral wrapped around said product drum, and a reservoir of said biologically active agent formulation adapted to cooperate with said product drum to transfer at least one application of said biologically active agent onto said microprojections as said conveyor strip travels around said product drum.
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11. A system for applying a biologically active agent formulation to a microprojection member having a plurality of stratum corneum-piercing microprojections comprising:
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a flexible conveyor strip having said microprojection member mounted thereon;
a product drum, wherein said conveyor strip is spiral wrapped around said product drum; and
a reservoir of said biologically active agent formulation adapted to cooperate with said product drum to transfer at least one application of said biologically active agent onto said microprojections as said conveyor strip travels around said product drum;
wherein said conveyor strip has a plurality of said microprojection members mounted thereon. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method for applying a biologically active agent formulation to a microprojection member having a plurality of stratum corneum-piercing microprojections, comprising the steps of:
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providing a flexible conveyor strip having said microprojection member mounted thereon;
spiral wrapping said conveyor strip around a product drum; and
conveying said microprojection member past a reservoir of said biologically active agent formulation to transfer at least one application of said biologically active agent onto said microprojections as said conveyor strip travels around said product drum. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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25. A system for applying a biologically active agent formulation to a microprojection member having a plurality of stratum corneum-piercing microprojections comprising:
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a flexible conveyor strip having an adhesive layer and a substantially continuous protective layer removably disposed thereon, said microprojection member being attached to said adhesive layer between said protective layer and said adhesive layer;
a product drum, wherein said conveyor strip is spiral wrapped around said product drum; and
a reservoir of said biologically active agent formulation adapted to cooperate with said product drum to transfer at least one application of said biologically active agent onto said microprojections after said protective layer is removed from said conveyor strip and as said conveyor strip travels around said product drum. - View Dependent Claims (26, 27, 28, 29)
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30. A method for applying a biologically active agent formulation to a microprojection member having a plurality of stratum corneum-piercing microprojections, comprising the steps of:
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providing a flexible conveyor strip having an adhesive layer and a substantially continuous protective layer removably disposed thereon, said microprojection member being disposed on said adhesive layer between said protective layer and said adhesive layer;
removing said protective layer from said conveyor strip;
spiral wrapping said conveyor strip around a product drum; and
conveying said microprojection member past a reservoir of said biologically active agent formulation to transfer at least one application of said biologically active agent onto said microprojections as said conveyor strip travels around said product drum. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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Specification