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Medical device and method

  • US 9,498,604 B2
  • Filed: 03/07/2014
  • Issued: 11/22/2016
  • Est. Priority Date: 11/12/1997
  • Status: Active Grant
First Claim
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1. A method for occluding a blood vessel, the method comprising:

  • advancing an occluding catheter through the blood vessel in a direction of blood flow to position a distal end of the catheter near a target site in the blood vessel to be occluded; and

    translating an outer tube of the catheter relative to an inner tube of the catheter to cause a flexible mesh braid sleeve to expand out from the distal end of the catheter to contact an inner wall of the blood vessel and occlude blood flow in the blood vessel,wherein the flexible mesh braid sleeve is partially coated so that upon expansion, the flexible mesh braid sleeve assumes a pre-programmed expanded configuration having a funnel-shaped inner surface in fluid communication with a lumen of the inner tube of the catheter and an outer surface comprising a distal cylindrical portion in contact with the inner wall of the blood vessel and a proximal conical portion,wherein the flexible mesh braid sleeve comprises a U-shaped, direction reversing region between the inner and outer surfaces and connecting the inner and outer surfaces to one another,wherein a distal tip of the inner tube of the catheter is connected to a first end of the flexible mesh braid sleeve and a distal tip of the outer tube of the catheter is connected to a second end of the flexible mesh braid sleeve, andwherein translating the outer tube relative to the inner tube comprises changing the relative positions of the distal tips of the inner and outer tubes of the catheter, thereby changing relative positions of the inner and outer surfaces of the expanded flexible mesh braid sleeve and a location of the U-shaped region.

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