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Stent retriever having an expandable fragment guard

  • US 9,848,906 B1
  • Filed: 06/20/2017
  • Issued: 12/26/2017
  • Est. Priority Date: 06/20/2017
  • Status: Active Grant
First Claim
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1. A stent retriever assembly having a proximal end and a distal end, and comprising:

  • (a) a mesh tube having a distal and proximal end, and being connected to a first wire; and

    (b) a blood-porous fragment guard mounted at said distal end of said mesh tube, said fragment guard including spokes joined at a central hub and extending radially and proximally from said central hub, and wherein a second wire is connected to said central hub so that when said second wire is pulled proximally relative to said first wire, said hub is pulled proximally, causing said spokes to spread out and causing said fragment guard to widen, and wherein said first wire and said second wire are spaced apart laterally.

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