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  • US 7,887,579 B2
  • Filed: 09/12/2007
  • Issued: 02/15/2011
  • Est. Priority Date: 09/29/2004
  • Status: Active Grant
First Claim
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1. A method of treating a patient with an obstruction inside a medical appliance, comprising the steps of:

  • providing a medical appliance comprising a scaffolding, the scaffolding configured to define a substantially cylindrical member having a distal end and a proximal end and extending longitudinally there between, forming a lumen there through, wherein at least a portion of the scaffolding comprises a material that is responsive to a magnetic field;

    radially contracting the cylindrical member in response to exposing the scaffolding to a magnetic field to force an obstruction within the lumen to migrate; and

    activating expansion of the medical appliance to the pre-contracted state.

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