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

  • US 8,221,395 B2
  • Filed: 10/29/2007
  • Issued: 07/17/2012
  • Est. Priority Date: 03/02/2004
  • Status: Active Grant
First Claim
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1. A method of transferring fluid from an implantable drug delivery device that includes a reservoir, a fluid transfer device, and a catheter, the method comprising the steps of:

  • transferring a first drug from the implantable drug delivery device in accordance with a first delivery profile after the first drug has been evacuated from the reservoir and replaced by a second drug;

    monitoring the quantity of the first drug within the implantable drug delivery device by monitoring activity of the fluid transfer device after the first drug has been evacuated from the reservoir and replaced by a second drug; and

    transferring the second drug from the reservoir to the catheter in accordance with a second delivery profile, which is different than the first delivery profile, in response to the first drug being cleared from the implantable drug delivery device in accordance with the first delivery profile.

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