Disposable piezoelectric polymer bandage for percutaneous delivery of drugs and method for such percutaneous delivery (a)
First Claim
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1. A bandage assembly for percutaneous administration of a medicament comprising:
- a. a bandage member having inner and outer surfaces and a cavity functionally opening on said inner surface thereof, said bandage member including a body element extending across said cavity adjacent said outer surface of said bandage member and fabricated from a piezoelectric polymer to generate vibrations perpendicularly to said inner surface, said bandage member having said inner surface adapted to be placed against the skin;
b. a medicament composition in said cavity;
c. electrical leads on said body element to supply energy thereto; and
d. sonic generator means connected to said leads to generate sonic vibrations in said body element to induce percutaneous transfer of the medicament composition, said vibrations being within a frequency range of about 20 Hz to 2 kHz.
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Abstract
A bandage assembly for percutaneous administration of a medicament generates sonic vibrations to produce sonophoresis. The assembly has a bandage member with a cavity containing a medicament and having a piezoelectric polymer element extending thereacross. An sonic generator is coupled to the piezoelectric polymer element to supply it with energy to produce sonic vibrations perpendicular to the skin to drive the medicament into the pores. A second piezoelectric polymer element may surround the cavity to generate vibrations parallel to the skin to stretch the pores.
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Citations
24 Claims
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1. A bandage assembly for percutaneous administration of a medicament comprising:
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a. a bandage member having inner and outer surfaces and a cavity functionally opening on said inner surface thereof, said bandage member including a body element extending across said cavity adjacent said outer surface of said bandage member and fabricated from a piezoelectric polymer to generate vibrations perpendicularly to said inner surface, said bandage member having said inner surface adapted to be placed against the skin; b. a medicament composition in said cavity; c. electrical leads on said body element to supply energy thereto; and d. sonic generator means connected to said leads to generate sonic vibrations in said body element to induce percutaneous transfer of the medicament composition, said vibrations being within a frequency range of about 20 Hz to 2 kHz. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. In a method for the percutaneous administration of medicaments, the steps comprising:
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a. forming a bandage member having inner and outer surfaces and a cavity functionally opening on said inner surface thereof, such bandage member including a body element extending across said cavity adjacent said outer surface of said bandage member and fabricated from a piezoelectric polymer to generate vibrations perpendicular to said inner surface, said bandage member having said inner surface adapted to be placed against the skin and having electrical leads on said body element; b. placing a medicament composition in said cavity; c. securing said inner surface of said bandage member against the skin of the user; d. connecting sonic generator means to said leads; and e. operating said generator means to produce sonic vibrations of said body element to induce percutaneous transfer of said medicament composition, said vibrations being within a frequency range of 20 Hz to 2 KHz. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification