Biodegradable ocular implant
First Claim
1. A bioerodible implant for treating a medical condition of the eye comprising an active agent dispersed within a biodegradable polymer matrix, wherein the bioerodible implant has an in vivo in rabbit eye cumulative release profile in which less than about 15 percent of the active agent is released about one day after implantation of the bioerodible implant and greater than about 80 percent of the active agent is released about 28 days after implantation of the bioerodible implant, and wherein the biodegradable polymer matrix comprises a mixture of hydrophilic end group PLGA and hydrophobic end group PLGA.
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Accused Products
Abstract
The invention provides biodegradable implants sized for implantation in an ocular region and methods for treating medical conditions of the eye. The implants are formed from a mixture of hydrophilic end and hydrophobic end PLGA, and deliver active agents into an ocular region without a high burst release.
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Citations
89 Claims
- 1. A bioerodible implant for treating a medical condition of the eye comprising an active agent dispersed within a biodegradable polymer matrix, wherein the bioerodible implant has an in vivo in rabbit eye cumulative release profile in which less than about 15 percent of the active agent is released about one day after implantation of the bioerodible implant and greater than about 80 percent of the active agent is released about 28 days after implantation of the bioerodible implant, and wherein the biodegradable polymer matrix comprises a mixture of hydrophilic end group PLGA and hydrophobic end group PLGA.
- 7. The bioerodible implant of claim I wherein the implant is sized for implantation in an ocular region.
- 10. A bioerodible implant for treating a medical condition of the eye comprising an active agent dispersed within a biodegradable polymer matrix, wherein the bioerodible implant is formed by an extrusion method, and wherein the bioerodible implant has an in vivo in rabbit eye cumulative release profile in which greater than about 80 percent of the active agent is released about 28 days after implantation of the bioerodible implant.
- 26. A bioerodible implant for treating a medical condition of the eye comprising an active agent dispersed within a biodegradable polymer matrix, wherein the bioerodible implant exhibits a cumulative release profile in which greater than about 80 percent of the active agent is released about 28 days after implantation of the bioerodible implant, and wherein the cumulative release profile is approximately sigmoidal in shape over about 28 days after implantation.
- 44. A bioerodible implant for treating a medical condition of the eye comprising an active agent dispersed within a biodegradable polymer matrix, wherein the biodegradable polymer matrix comprises a mixture of PLGA having hydrophilic end groups and PLGA having hydrophobic end groups, and wherein the bioerodible implant is sized for implantation in an ocular region.
- 75. A bioerodible implant for treating a medical condition of the eye comprising an active agent dispersed within a biodegradable polymer matrix, wherein the bioerodible implant has an in vivo in rabbit eye cumulative release profile in which less than about 15 percent of the active agent is released about one day after implantation of the bioerodible implant and greater than about 80 percent of the active agent is released about 28 days after implantation of the bioerodible implant.
Specification