METHODS AND DEVICES FOR SUSTAINED RELEASE OF SUBSTANCES

摘要

Devices that provide timed-release of target compounds absorbed by, or otherwise integrated into, an external housing. The external housing absorbs and facilitates volatilization of the released compound. A permeable cover can be employed as a regulating mechanism to control the rate volatilization from the external housing. One or more reservoirs containing target compound can be contained within one or more internal chambers of the external housing. The one or more reservoirs can release the target compound for absorption by the external housing and/or to make contact with one or more other reservoirs so as to compromise the other reservoirs and release target compound within. A wick can be employed in certain embodiments to transfer target compound from the internal chamber to the external housing to be volatilized. Continued or sequential release of target compound to recharged the external housing achieves a zero order release rate from the external housing.

主权项

1. A release device comprising:
an external housing formed from a material capable of absorbing and volatilizing one or more target compounds; at least one internal chamber located within the external housing; and at least one reservoir disposed within the internal chamber, wherein the reservoir comprises a material that can be compromised to release a target compound stored within the reservoir into the internal chamber; such that target compound released from the reservoir is absorbed by the external housing, whereby the external housing volatilizes the target compound.