Transdermal compositions containing low molecular weight drugs which are liquid at room temperatures
First Claim
1. A pressure-sensitive adhesive transdermal drug delivery system suitable for transdermal drug delivery comprising a blend of:
- (a) one or more solvent-based high shear resistant acrylic-based polymers having a shear resistance which is greater than or equal to 50 hours at 8 pounds per square inch and 72°
Fahrenheit; and
(b) a therapeutically effective amount of one or more drugs, at least one of which is of low molecular weight and liquid at or about room temperatures, wherein the one or more drugs excludes nicotine and wherein the transdermal drug delivery system forms a polymer matrix which has sufficient tack and shear to remain in place under conditions of use.
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Accused Products
Abstract
A transdermal composition is disclosed which contains a blend of one or more polymers, one or more drugs, at least one of which has a low molecular weight and is liquid at or about room temperatures. The composition is substantially free of water and liquids which have a normal boiling point (a) optionally below processing temperatures and (b) greater than or equal to the temperature of the low molecular weight drugs. The composition does not suffer from the substantial loss of the lower molecular weight drug during production of the transdermal system. A transdermal composition is also disclosed which has one or more drugs, at least one of which has a low molecular weight and is liquid at or about room temperatures, and a polymer matrix including one or more high shear resistant polymers. The high shear resistant polymer(s) reduce the plasticizing effect of the low molecular weight drug, and has sufficient tack and shear for application to a human being.
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Citations
26 Claims
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1. A pressure-sensitive adhesive transdermal drug delivery system suitable for transdermal drug delivery comprising a blend of:
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(a) one or more solvent-based high shear resistant acrylic-based polymers having a shear resistance which is greater than or equal to 50 hours at 8 pounds per square inch and 72°
Fahrenheit; and
(b) a therapeutically effective amount of one or more drugs, at least one of which is of low molecular weight and liquid at or about room temperatures, wherein the one or more drugs excludes nicotine and wherein the transdermal drug delivery system forms a polymer matrix which has sufficient tack and shear to remain in place under conditions of use. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 16, 17, 18, 19, 20, 22)
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14. A method of producing a pressure-sensitive transdermal drug delivery system suitable for a transdermal drug delivery system, comprising the steps of:
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(1) producing a blend of;
(a) one or more solvent-based high shear resistant acrylic-based polymers having a shear resistance of greater than or equal to 50 hours at 8 pounds per square inch and 72°
Fahrenheit and mixtures thereof; and
(b) a therapeutically effective amount of one or more drugs, at least one of which is of low molecular weight and liquid at or about room temperatures, wherein the one or more drugs excludes nicotine and wherein the blend is in a solvent system;
(2) forming the blend into a polymer matrix; and
(3) drying the polymer matrix to remove the solvent system to form the transdermal drug delivery system, wherein the system forms a polymer matrix which has sufficient tack and shear for application to a human being. - View Dependent Claims (15)
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21. A pressure-sensitive transdermal drug delivery system as claimed 1, wherein the system is substantially free of water and liquids having a normal boiling point below processing temperatures and also about equal to or greater than the normal boiling points of the one or more low molecular weight drugs.
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23. A pressure-sensitive adhesive transdermal drug delivery system suitable for transdermal drug delivery comprising a blend of:
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(a) a pressure-sensitive adhesive polymer which consist of one or more solvent-based high shear resistant acrylic-based polymers having a shear resistance which is greater than or equal to 50 hours at 4 pounds per square inch and 72°
Fahrenheit; and
(b) a therapeutically effective amount of one or more drugs, at least one of which is of low molecular weight and liquid at or about room temperatures, wherein the one or more drugs excludes nicotine and wherein the transdermal drug delivery system forms a polymer matrix which has sufficient tack and shear to remain in place under conditions of use. - View Dependent Claims (25, 26)
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24. A method of producing a pressure-sensitive transdermal drug delivery system suitable for a transdermal drug delivery system, comprising the steps of:
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(1) producing a blend of;
(a) a pressure-sensitive adhesive polymer which consist of one or more solvent-based high shear resistant acrylic-based polymers having a shear resistance of greater than or equal to 50 hours at 4 pounds per square inch and 72°
Fahrenheit and mixtures thereof; and
(b) a therapeutically effective amount of one or more drugs, at least one of which is of low molecular weight and liquid at or about room temperatures, wherein the one or more drugs excludes nicotine and wherein the blend is in a solvent system;
(2) forming the blend into a polymer matrix; and
(3) drying the polymer matrix to remove the solvent system to form the transdermal drug delivery system, wherein the system forms a polymer matrix which has sufficient tack and shear for application to a human being.
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Specification