Electrolytic transdermal delivery of proteins
First Claim
1. A transdermal patch for delivering at least one protein drug to the bloodstream of the patient comprising:
- a. at least one protein drug comprising at least one nonionic protein having more than 20 peptide units, water, and a water-destructuring agent with a negative Setschenow constant, contained in a drug reservoir, andb. electrolytic means comprising a power source connected to at least one electrode in electrolytic contact with said reservoir for transdermal transport of the nonionic protein having a current density from about 0.5 microampere/cm2 to about 10 milliampere/cm2, impressed voltage between 1 and 40 volts, and a migratory water volume between 0.00I/ml/cm2 hr and 0.0I ml/cm2 /hr, whereby the skin of the patient is neither irritated nor erythematized.
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Abstract
A chemical composition for electrolytic transdermal transport of a protein to the blood stream of the patient comprises:
(a) a protein,
(b) a cosolvent with negative Setschenow constants, and
(c) water.
Some of the preferred proteins are: insulin, protamine sulfate, calcitonin, glucagon, and corticotropin. Some of the preferred dissociating agents with negative Setschenow constants are: urea, propylurea, potassium iodide, sodium perchlorate, and guanidine hydrochloride.
The electrolytic device containing the composition to be transdermally delivered comprises:
two electrode elements separated by barrier means,
a reservoir containing the composition of the invention,
an electronic/electrolytic circuit including a source of a power,
a cover, and
adhesive means holding the device to the patient'"'"'s skin.
A semipermeable membrane between the patient'"'"'s skin and the electrolytic device is optional.
118 Citations
8 Claims
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1. A transdermal patch for delivering at least one protein drug to the bloodstream of the patient comprising:
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a. at least one protein drug comprising at least one nonionic protein having more than 20 peptide units, water, and a water-destructuring agent with a negative Setschenow constant, contained in a drug reservoir, and b. electrolytic means comprising a power source connected to at least one electrode in electrolytic contact with said reservoir for transdermal transport of the nonionic protein having a current density from about 0.5 microampere/cm2 to about 10 milliampere/cm2, impressed voltage between 1 and 40 volts, and a migratory water volume between 0.00I/ml/cm2 hr and 0.0I ml/cm2 /hr, whereby the skin of the patient is neither irritated nor erythematized. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A transdermal patch as in claim I, further comprising a semipermeable membrane on the side of the reservoir adapted to be placed on the skin of the patient.
Specification