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Implantable osmotic pump

  • US 6,632,217 B2
  • Filed: 04/19/2001
  • Issued: 10/14/2003
  • Est. Priority Date: 04/19/2001
  • Status: Expired due to Fees
First Claim
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1. An implantable osmotic pump for delivering a pharmaceutical agent to a patient, comprising:

  • an osmotic engine;

    a substantially toroidal compartment adapted to store a pharmaceutical agent, and a piston disposed within the compartment, the osmotic engine being configured to cause the piston to travel within the compartment and deliver the pharmaceutical agent when the pump is implanted in the patient.

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