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Methods and devices for cutting tissue

  • US 9,486,237 B2
  • Filed: 07/12/2013
  • Issued: 11/08/2016
  • Est. Priority Date: 08/19/1999
  • Status: Expired due to Term
First Claim
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1. An atherectomy catheter comprising:

  • a catheter body adapted to be inserted into a blood vessel of a subject, the catheter body including a proximal body portion and a distal body portion coupled to the proximal body portion at a joint, wherein the distal body portion is deflectable about the joint relative to the proximal body portion between a non-deflected position and a deflected position, the distal body portion having a side opening window;

    a cutter in the distal body portion, the cutter being rotatable relative to the catheter body about a rotation axis and adapted to debulk the blood vessel, wherein the cutter is movable axially relative to the distal body portion from a distal location distal of the side opening window to a proximal location adjacent a proximal end of the side opening window to impart deflection of the distal body portion from the non-deflected position to the deflected position, wherein the cutter protrudes outside the distal body portion through the side opening window when the distal body portion is in the deflected position; and

    a drive shaft extending within the proximal body portion, the drive shaft being coupled to the cutter and adapted to impart rotation to the cutter about the rotation axis and axial movement of the cutter relative to the distal body portion from the distal location to the proximal location.

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