Catheter injectable depot compositions and uses thereof
First Claim
Patent Images
1. A catheter injectable depot composition in the form of a thixotropic gel, said gel comprising:
- (a) approximately 5 wt. % to approximately 90 wt. % of a bioerodible, biocompatible polymer, wherein the polymer is selected from the group consisting of polylactides, polyglycolides, polycaprolactones, polyanhydrides, polyamines, polyurethanes, polyesteramides, polyorthoesters, polydioxanones, polyacetals, polyketals, polycarbonates, polyphosphoesters, polyorthocarbonates, polyphosphazenes, succinates, poly(malic acid), poly(amino acids), polyethylene glycol, polyhydroxycellulose, chitin, chitosan, hyaluronic acid, and copolymers, terpolymers and mixtures thereof;
(b) approximately 5 wt % to approximately 95 wt % of an aromatic alcohol having miscibility in water of less than or equal to 7% at 25°
C., in an amount effective to plasticize the polymer and form a gel therewith, wherein the aromatic alcohol has the structural formula (I)
Ar-(L)n-OH
(I)in which Ar is a substituted or unsubstituted aryl or heteroaryl group, n is zero or 1, and L is a linking moiety;
(c) a thixotropic amount of a thixotropic agent mixed with the polymer effective to form a thixotropic composition, the thixotropic agent being selected from the group consisting essentially of lower alkanols and said amount being greater than or equal to 0.01 wt % and less than or equal to 15 wt % of the combined weight of the aromatic alcohol and the thixotropic agent; and
(d) approximately 0.1 wt % to approximately 50 wt % of a beneficial agent.
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Abstract
Catheter injectable depot compositions are provided that include a bioerodible, biocompatible polymer, a solvent having miscibility in water of less than or equal to 7 wt. % at 25° C., in an amount effective to plasticize the polymer and form a gel therewith, a thixotropic agent, and a beneficial agent. The solvent comprises an aromatic alcohol, an ester of an aromatic acid, an aromatic ketone, or mixtures thereof. The compositions have substantially improved shear thinning behavior and reduced injection force, rendering the compositions readily implanted beneath a patient'"'"'s body surface by injection.
188 Citations
28 Claims
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1. A catheter injectable depot composition in the form of a thixotropic gel, said gel comprising:
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(a) approximately 5 wt. % to approximately 90 wt. % of a bioerodible, biocompatible polymer, wherein the polymer is selected from the group consisting of polylactides, polyglycolides, polycaprolactones, polyanhydrides, polyamines, polyurethanes, polyesteramides, polyorthoesters, polydioxanones, polyacetals, polyketals, polycarbonates, polyphosphoesters, polyorthocarbonates, polyphosphazenes, succinates, poly(malic acid), poly(amino acids), polyethylene glycol, polyhydroxycellulose, chitin, chitosan, hyaluronic acid, and copolymers, terpolymers and mixtures thereof; (b) approximately 5 wt % to approximately 95 wt % of an aromatic alcohol having miscibility in water of less than or equal to 7% at 25°
C., in an amount effective to plasticize the polymer and form a gel therewith, wherein the aromatic alcohol has the structural formula (I)
Ar-(L)n-OH
(I)in which Ar is a substituted or unsubstituted aryl or heteroaryl group, n is zero or 1, and L is a linking moiety; (c) a thixotropic amount of a thixotropic agent mixed with the polymer effective to form a thixotropic composition, the thixotropic agent being selected from the group consisting essentially of lower alkanols and said amount being greater than or equal to 0.01 wt % and less than or equal to 15 wt % of the combined weight of the aromatic alcohol and the thixotropic agent; and (d) approximately 0.1 wt % to approximately 50 wt % of a beneficial agent. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 27, 28)
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2. A catheter injectable depot composition in the form of a thixotropic gel, said gel comprising:
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(a) approximately 5 wt. % to approximately 90 wt. % of a biodegradable, biocompatible lactic acid-based polymer having an average molecular weight in the range of approximately 1,000 to approximately 120,000; (b) approximately 5 wt % to approximately 95 wt % of an aromatic alcohol having miscibility in water of less than or equal to 7% at 25°
C., in an amount effective to plasticize the polymer and form a gel therewith, wherein the aromatic alcohol has the structural formula (I)
Ar-(L)n-OH
(I)in which Ar is a substituted or unsubstituted aryl or heteroaryl group, n is zero or 1, and L is a linking moiety; (c) a thixotropic amount of a thixotropic agent mixed with the polymer effective to form a thixotropic composition, the thixotropic agent being selected from the group consisting essentially of lower alkanols and said amount being greater than or equal to 0.01 wt % and less than or equal to 15 wt % of the combined weight of the aromatic alcohol and the thixotropic agent; and (d) approximately 0.1 wt % to approximately 50 wt % of a beneficial agent.
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18. A catheter injectable depot composition in the form of a thixotropic gel, said gel comprising:
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(a) approximately 5 wt. % to approximately 90 wt. % of a poly(lactide-co-glycolide) (PLGA) copolymer having an average molecular weight in the range of approximately 1,000 to approximately 120,000; (b) approximately 5 wt. % to approximately 90 wt. % an aromatic alcohol solvent having miscibility in water of less than or equal to 7% at 25°
C., in an amount effective to plasticize the polymer and form a gel therewith;(c) a thixotropic amount of a thixotropic agent mixed with the polymer effective to form a thixotropic composition, wherein the thixotropic agent is ethanol and an amount of the ethanol is greater than or equal to 0.01 weight percent and less than or equal to 15 weight percent of the combined weight of the solvent and the thixotropic agent; and (d) approximately 0.1 wt. % to approximately 50 wt. % of a beneficial agent. - View Dependent Claims (19)
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20. A catheter injectable depot composition in the form of a thixotropic gel, said gel comprising:
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up to about 90 wt. % of a bioerodible, biocompatible polymer, wherein the polymer is selected from the group consisting of polylactides, polyglycolides, polycaprolactones, polyanhydrides, polyamines, polyurethanes, polyesteramides, polyorthoesters, polydioxanones, polyacetals, polyketals, polycarbonates, polyphosphoesters, polyorthocarbonates, polyphosphazenes, succinates, poly(malic acid), poly(amino acids), polyethylene glycol, polyhydroxycellulose, chitin, chitosan, hyaluronic acid, and copolymers, terpolymers and mixtures thereof; up to about 95 wt. % of an aromatic alcohol having miscibility in water of less than or equal to 7 wt. % at 25°
C., in an amount effective to plasticize the polymer and form a gel therewith; andup to about 50 wt. % of a beneficial agent, wherein the composition is free of monohydric lower alkanols.
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21. A catheter injectable depot composition in the form of a thixotropic gel, said gel comprising:
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(a) approximately 5 wt. % to approximately 90 wt. % of a biodegradable, biocompatible lactic acid-based polymer having an average molecular weight in the range of approximately 1,000 to approximately 120,000; (b) approximately 5 wt. % to approximately 95 wt. % of an aromatic alcohol having miscibility in water of less than or equal to 5% at 25°
C., in an amount effective to plasticize the polymer and form a gel therewith, wherein the aromatic alcohol has the structural formula (I)
Ar-(L)n-OHin which Ar is a substituted or unsubstituted aryl or heteroaryl group, n is zero or 1, and L is a linking moiety; and (c) approximately 0.1 wt. % to approximately 50 wt. % of a beneficial agent, wherein the composition is free of monohydric lower alkanols. - View Dependent Claims (22, 23, 24)
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25. A catheter injectable depot composition in the form of a thixotropic gel, said gel comprising:
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(a) approximately 5 wt. % to approximately 90 wt. % of a poly(lactide-co-glycolide) (PLGA) copolymer having an average molecular weight in the range of approximately 1,000 to approximately 120,000; (b) approximately 5 wt. % to approximately 90 wt. % of an aromatic alcohol solvent having miscibility in water of less than or equal to 7% at 25°
C., in an amount effective to plasticize the polymer and form a gel therewith; and(c) approximately 0.1 wt. % to approximately 50 wt. % of a beneficial agent, wherein the composition is free of monohydric lower alkanols. - View Dependent Claims (26)
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Specification