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Method and apparatus for automatically modifying delivery profile of drug delivery system

  • US 20050197649A1
  • Filed: 02/28/2005
  • Published: 09/08/2005
  • Est. Priority Date: 03/02/2004
  • Status: Active Grant
First Claim
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1. A method of operating an implantable drug delivery device for transferring a drug from a reservoir to a catheter for delivery to a body site, said method including:

  • filling said reservoir with a first drug;

    controllably transferring said first drug from said reservoir to said catheter and body site in accordance with a first delivery profile specifying a schedule of flow rates;

    evacuating said first drug from said reservoir;

    filling said reservoir with a second drug;

    providing a second delivery profile specifying a schedule of flow rates for transferring said second drug to said catheter;

    continuing to transfer the remaining quantity of said first drug in said delivery device to said body site in accordance with said first delivery profile after evacuating said reservoir; and

    ;

    initiating controllable transfer of said second drug from said reservoir to said catheter in accordance with said second delivery profile after said remaining quantity of said first drug has been cleared from said device.

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