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Minimally-invasive medical retrieval device

  • US 6,500,182 B2
  • Filed: 03/26/1999
  • Issued: 12/31/2002
  • Est. Priority Date: 03/27/1998
  • Status: Expired due to Term
First Claim
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1. An elongated medical retrieval device comprising:

  • an elongated cylindrical member having a proximal end, a distal end, a proximal portion and a distal portion, the elongated cylindrical member comprising a first continuum of a first metallic material extending therealong;

    the proximal portion of the elongated cylindrical member including a proximal closed cylinder, the proximal closed cylinder comprising the continuum of first metallic material and having a circumferential wall of substantially uniform thickness;

    the distal portion forming a plurality of resilient grasping members, the resilient grasping members manipulable between a compact shape and an enlarged shape, wherein resilient grasping members of the enlarged shape are in a relaxed condition, and wherein the edges of adjacent resilient grasping members are spaced apart when in the compact condition, and wherein the resilient grasping members, each having a distal end and a proximal end are conjoined about the distal ends thereof; and

    an external cylinder of a second continuum of material to constrain the distal portion of the elongated cylindrical member in to the compact shape, the external cylinder being longitudinally slidable about the elongated cylindrical member to alternately deploy the resilient grasping members to the enlarged shape, or recompress the resilient grasping members having the enlarged shape into one of the compact shape or a substantially closed position for capture or capture and retrieval of an object from within a patient.

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