Catheter including cutting element and energy emitting element
First Claim
Patent Images
1. A tissue-removing catheter for removing tissue from a body lumen, the tissue-removing catheter comprising:
- an elongate catheter body having a length and opposite proximal and distal end portions, the catheter body defining a side opening proximal of the distal end portion such that the distal end portion of the catheter body defines an enclosed distal end of the side opening;
a drive shaft positioned in the catheter body, the drive shaft being rotatable relative to the catheter body;
a tissue cutting element adjacent the distal end portion of the catheter body and configured to rotate relative to the catheter body, the tissue cutting element being mounted to the drive shaft to impart rotation to the tissue cutting element;
a bearing coupled to the catheter body such that the bearing can tilt with respect to the catheter body to a first position and a second position, the bearing supporting the tissue cutting element on the catheter body such that the bearing positions the cutting element at a stowed position when the bearing is at the first position and the bearing positions the cutting element at a deployed position when the bearing is positioned at the second position; and
an actuator operatively connected to the bearing, wherein the actuator is configured to tilt the bearing relative to the catheter body between the first position and the second position;
wherein when the tissue cutting element is positioned at the stowed position, the tissue cutting element is received inside the catheter body such that no portion of the tissue cutting element protrudes outward beyond outer bounds of the side opening; and
wherein when the tissue cutting element is positioned at the deployed position, a portion of the tissue cutting element protrudes outward from the catheter body through the side opening beyond the outer bounds of the side opening.
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Accused Products
Abstract
A catheter for removing tissue from a body lumen and for providing information relating to the body lumen. The catheter includes a tissue cutting element that rotates relative to the catheter body and is mounted to the drive shaft for imparting rotation to the tissue cutting element. As energy emitting element of the catheter rotates relative to the catheter body and is rotatable independently of the tissue cutting element.
580 Citations
20 Claims
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1. A tissue-removing catheter for removing tissue from a body lumen, the tissue-removing catheter comprising:
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an elongate catheter body having a length and opposite proximal and distal end portions, the catheter body defining a side opening proximal of the distal end portion such that the distal end portion of the catheter body defines an enclosed distal end of the side opening; a drive shaft positioned in the catheter body, the drive shaft being rotatable relative to the catheter body; a tissue cutting element adjacent the distal end portion of the catheter body and configured to rotate relative to the catheter body, the tissue cutting element being mounted to the drive shaft to impart rotation to the tissue cutting element; a bearing coupled to the catheter body such that the bearing can tilt with respect to the catheter body to a first position and a second position, the bearing supporting the tissue cutting element on the catheter body such that the bearing positions the cutting element at a stowed position when the bearing is at the first position and the bearing positions the cutting element at a deployed position when the bearing is positioned at the second position; and an actuator operatively connected to the bearing, wherein the actuator is configured to tilt the bearing relative to the catheter body between the first position and the second position; wherein when the tissue cutting element is positioned at the stowed position, the tissue cutting element is received inside the catheter body such that no portion of the tissue cutting element protrudes outward beyond outer bounds of the side opening; and wherein when the tissue cutting element is positioned at the deployed position, a portion of the tissue cutting element protrudes outward from the catheter body through the side opening beyond the outer bounds of the side opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of removing tissue from a body lumen, the method comprising:
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inserting a tissue-removing catheter into the body lumen, the tissue-removing catheter including an elongate catheter body having a length and opposite proximal and distal end portions, the catheter body defining a side opening proximal of the distal end portion such that the distal end portion of the catheter body defines an enclosed distal end of the side opening; a drive shaft positioned in the catheter body, the drive shaft being rotatable relative to the catheter body; a tissue cutting element adjacent the distal end portion of the catheter body and configured to rotate relative to the catheter body, the tissue cutting element being mounted to the drive shaft to impart rotation to the tissue cutting element; a bearing coupled to the catheter body such that the bearing can tilt with respect to the catheter body to a first position and a second position, the bearing supporting the tissue cutting element on the catheter body such that the bearing positions the cutting element at a stowed position when the bearing is at the first position and the bearing positions the cutting element at a deployed position when the bearing is positioned at the second position; and an actuator operatively connected to the bearing, wherein the actuator is configured to tilt the bearing relative to the catheter body between the first position and the second position; wherein when the tissue cutting element is positioned at the stowed position, the tissue cutting element is received inside the catheter body such that no portion of the tissue cutting element protrudes outward beyond outer bounds of the side opening; and wherein when the tissue cutting element is positioned at the deployed position, a portion of the tissue cutting element protrudes outward from the catheter body through the side opening beyond the outer bounds of the side opening; operating the actuator to tilt the bearing relative to the catheter body from the first position to the second position so that the tissue cutting element extends outside the side opening; and rotating, after said operating the actuator, the drive shaft to rotate the tissue cutting element. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification