A method and device for treating a mammalian organism to obtain a desired local or systemic physiological or pharmacological effect is provided. The method includes administering a sustained release drug delivery system to a mammalian organism in need of such treatment at an area wherein release of an effective agent is desired and allowing the effective agent to pass through the device in a controlled manner. The device includes an inner core or reservoir including the effective agent, an impermeable tube which encloses portions of the reservoir, and a permeable member at an end of the tube.
This application is related to U.S. Patent application Ser. No. 08/919,221, by Chen et al., filed Aug. 28, 1997, entitled Sustained Release Drug Delivery Devices, now U.S. Pat. No. 5,902,598, which is incorporated herein by reference in its entirety.
The invention is directed to a drug delivery device for controlled release of a drug, comprising a core that has a cylindrical plug embedded therein; and a coating that at least partially surrounds the core. The core is comprised of a drug and excipients. The coating surrounding the core is essentially impermeable to the drug. The cylindrical plug, which is embedded in the core, may be hollow or solid. The drug delivery device enables zero-order drug release profiles as well as more complicated release profiles to be obtained. The invention is also directed to a method of making the drug delivery device.
The present invention is directed to an improved sustained release drug delivery device for delivering multiple agents comprising a drug core, a unitary cup, and a permeable plug.
A method of fabricating capsules for sustained and controlled drug delivery. An array of capsules of a hydrophobic polymer is subjected to an extraction process to remove low-molecular-weight monomers, oligomers and polymers, and a laser is used to open accurately sized, spaced, and shaped holes in the capsules. In the process, the laser cutting oxidizes the hydrophobic polymer, making it sufficiently hydrophilic to allow wetting by the contents of the capsules. The capsules are then filled with a hydrophilic polymer covering the laser-cut opening and with one or more drugs for delivery, sealed, and removed from the array for mounting on suture tabs or other mounts. The use of the laser helps insure accurate and reliable delivery of drugs from the capsule.
A package for storing an implantable medical device during storage and shipping includes a containment region for containing the device, a flange surrounding the containment region, and lidstock sealed against this flange. A recess in the containment region permits insertion of a surgical gripping tool below the device support surface. The package may further include ribs that facilitate steadying or gripping the package during removal of the lidstock, and a separate receptacle for holding the device after removal from the containment region. The device is preferably a device implantable in the human eye.
