Infusion sets for the delivery of a therapeutic substance to a patient

  • US 9,669,156 B2
  • Filed: 08/15/2016
  • Issued: 06/06/2017
  • Est. Priority Date: 12/28/2005
  • Status: Active Grant
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First Claim
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1. A method of using an infusion system comprising an inner cannula configured to deliver a medication to a patient and an outer cannula configured to reside over the inner cannula and to deliver the medication to the patient, wherein the method comprises:

  • positioning the inner cannula and the outer cannula together under the skin of the patient;

    using one of the inner cannula or the outer cannula to deliver the medication to the patient;

    withdrawing the used cannula from the patient while leaving the other cannula within the patient to deliver the medication; and

    delivering the medication through the other cannula.

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