Material removal device and method of use
First Claim
1. A catheter for removing material from a vascular lumen comprising:
- a tubular body having proximal and distal ends and a wall defining a lumen, the wall having a side opening positioned proximal of the distal end of the tubular body and an outer diameter adjacent the side opening;
a rotatable shaft disposed within the lumen of the tubular body;
a cutting element coupled to the rotatable shaft, the cutting element and rotatable shaft being longitudinally moveable within the tubular body between a stored position in which the cutting element is positioned distal of the side opening and a cutting position in which the cutting element is contained within the lumen of the tubular body and longitudinally aligned with the side opening;
a cutting element exposure member within the tubular body, the cutting element exposure member being longitudinally moveable relative to the tubular body and the cutting element between a distal position and a proximal position, the cutting element exposure member being configured such that movement of the cutting element exposure member from the distal position to the proximal position when the cutting element is in the cutting position results in movement of the cutting element from the cutting position to an extended position in which a portion of the cutting element is extended through the side opening beyond said outer diameter of the wall of the tubular body.
2 Assignments
0 Petitions
Accused Products
Abstract
A catheter having a tubular body and a rotatable shaft disposed within a lumen of the tubular body. A cutting element is coupled to the rotatable shaft, the cutting element having a cutting edge, the cutting element and rotatable shaft being longitudinally moveable within the tubular body between a stored position in which the cutting element is positioned distal of a side opening and a cutting position in which the cutting element is contained within the lumen of the tubular body and longitudinally aligned with the side opening. The cutting element is configured to extend through the side opening and to cut material from the wall of a vessel at a treatment site as the catheter is pulled proximally through the treatment site. The catheter may optionally have a rotating distal tip with an abrasive surface. The catheter includes a collection chamber positioned proximally of the cutting window.
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Citations
41 Claims
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1. A catheter for removing material from a vascular lumen comprising:
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a tubular body having proximal and distal ends and a wall defining a lumen, the wall having a side opening positioned proximal of the distal end of the tubular body and an outer diameter adjacent the side opening; a rotatable shaft disposed within the lumen of the tubular body; a cutting element coupled to the rotatable shaft, the cutting element and rotatable shaft being longitudinally moveable within the tubular body between a stored position in which the cutting element is positioned distal of the side opening and a cutting position in which the cutting element is contained within the lumen of the tubular body and longitudinally aligned with the side opening; a cutting element exposure member within the tubular body, the cutting element exposure member being longitudinally moveable relative to the tubular body and the cutting element between a distal position and a proximal position, the cutting element exposure member being configured such that movement of the cutting element exposure member from the distal position to the proximal position when the cutting element is in the cutting position results in movement of the cutting element from the cutting position to an extended position in which a portion of the cutting element is extended through the side opening beyond said outer diameter of the wall of the tubular body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A catheter for removing material from a vascular lumen comprising:
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a tubular body having proximal and distal ends and a wall defining a lumen; a rotatable shaft disposed within the lumen of the tubular body; a cutting element operatively coupled to the rotatable shaft so that rotation of the shaft imparts rotation to the cutting element, the cutting element and rotatable shaft together forming a rotatable assembly that is rotatable relative to the tubular body, the cutting element having a cutting edge; a rotatable tip connected to the distal end of the tubular body, the rotatable tip being rotatable relative to the tubular body; and a connector assembly configured for selectively coupling the rotatable assembly to the rotatable tip so that rotation of the rotatable assembly relative to the tubular body imparts rotation to the rotatable tip relative to the tubular body and selectively uncoupling the rotatable tip from the rotatable assembly. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A catheter for removing material from a vascular lumen comprising:
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a tubular body having proximal and distal ends and a wall defining a lumen, the tubular body having a first opening at the distal end and a second opening through the wall proximal of the distal end; a rotatable shaft disposed within the lumen of the tubular body, a first cutting element positioned at the distal end of the tubular body and configured to cut material from the vessel through the first opening as the catheter is moved distally through the vessel, the rotatable shaft being operatively coupled to the first cutting element so that rotation of the shaft imparts rotation to the first cutting element; and a second cutting element positioned proximally of the first cutting element and configured to remove material from the vessel through the second opening as the catheter is moved proximally through the vessel, the rotatable shaft being operatively coupled to the second cutting element so that rotation of the shaft imparts rotation to the second cutting element. - View Dependent Claims (31, 32, 33, 34, 35)
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36. A catheter for removing material from a vascular lumen comprising:
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a tubular body having proximal and distal ends and a wall defining a lumen, the tubular body having an opening through the wall proximal of the distal end; a rotatable shaft disposed within the lumen of the tubular body; and a cutting element operatively coupled to the rotatable shaft, the cutting element including; a body having proximal and distal ends and an axis extending between the proximal and distal ends, wherein the rotatable shaft is configured to impart rotation to the cutting element so that the body rotates about said axis; an end cutting blade at one of the proximal and distal ends of the cutting element body and extending generally transverse to said axis, the end cutting blade configured to remove material from the vessel through the opening as the catheter is moved proximally through the vessel; and a side cutting blade extending generally along said axis of the cutting element body and configured to remove material from the vascular lumen through the opening when the catheter is stationary within the vessel. - View Dependent Claims (37, 38, 39, 40, 41)
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Specification