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Drug delivery device with minimal residual drug retention

  • US 5,902,605 A
  • Filed: 04/18/1997
  • Issued: 05/11/1999
  • Est. Priority Date: 04/18/1996
  • Status: Expired due to Term
First Claim
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1. A fluid-imbibing delivery device for dispensing an active agent formulation to a fluid environment of use after an initial, preset delay of startup of delivery, the device comprising a housing and a closure for the housing, the housing containing an active agent formulation comprising at least one active agent and a first expansion agent, the housing and the active agent formulation being configured to provide a fluid flow path between the interior of the housing and the active agent formulation, and the closure comprising a second expansion agent.

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