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US 7,635,488 B2Granted
Patches and uses thereof
AssigneeDBV Technologies
InventorsChristophe Dupont, Bertrand Dupont, Pierre-Yves Vannerom, Pierre-Henri Benhamou, Jorge Ronco
Life of this patent
Estimating the term…
Abstract
A patch comprising a support having electrostatic properties is provided wherein a periphery of the support is coated with an adhesive material, and all or part of the non-adhesive surface of the support is covered with at least one biologically active substance in the form of particles that is adhered to the non-adhesive part of the support by electrostatic forces.
Claims42
A patch, comprising:
- a support defining non-overlapping first and second regions, the support having an electrical charge impressed upon the first region by application of an electrical field to form an electrically charged surface;
- a predetermined amount of a powdered biologically active substance bound to the electrically charged surface in the first region through electrostatic forces;
- and
- an adhesive disposed only in the second region, the adhesive configured to seal the patch against a patient's skin form a moisture-retaining chamber.
1 more element
A method of manufacture of a skin patch, comprising:
- providing a support having a surface;
- applying an electrical field to the support to impress an electrical charge on the surface of the support to create an electrically charged surface;
- providing particles of a powdered active substance;
- and
- contacting the particles of the powdered active substance to the electrically charged surface so that the particles of the powdered active substance become bound to the electrically charged surface by electrostatic forces.
2 more elements
A patch, comprising:
- a support having non-overlapping first and second portions, the first portion comprising a material capable of accumulating an electrostatic charge, the first portion having an electrically charged surface created by applying an electrical field to the first portion to impress an electrical charge thereon;
- a layer of powdered active particles adhered to the first portion by contacting particles of a powdered active substance to the electrically charged surface;
- and
- an adhesive disposed on the second portion, the adhesive configured to adhere the patch to skin.
1 more element
Dependencies are inferred from the claim text.