Tissue-removing catheter including movable distal tip
First Claim
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1. A tissue-removing catheter for removing tissue from a body lumen, the catheter comprising:
- an elongate body having proximal and distal ends;
a tissue-removing element adjacent the distal end of the elongate body, the tissue-removing element configured to engage and remove tissue from the body lumen;
a tissue-containment chamber adjacent the distal end of the elongate body and configured to receive tissue removed by the tissue-removing element, the tissue-containment chamber defining a chamber lumen and having a proximal end connected to the distal end portion of the elongate body, a distal end opposite the proximal end, a longitudinal axis extending between the proximal and distal ends, and a tissue-removing opening adjacent to and spaced apart from the distal end thereof;
a closure component in the chamber lumen of the tissue-containment chamber, the closure component being slidable longitudinally in a distal direction within the chamber lumen from a closed position, in which the closure component inhibits removed tissue in the tissue-containment chamber from exiting through the tissue-removing opening, to an open position, in which the closure component allows removed tissue in the tissue-containment chamber to exit through the tissue-removing opening.
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Abstract
A catheter includes a tissue-removing element and a tissue-containment chamber configured to receive tissue removed by the tissue-removing element. The tissue-containment chamber has a tissue-removing opening for use in removing tissue from the chamber. A closure component is associated with the tissue-removing opening for selectively opening and closing the opening.
624 Citations
24 Claims
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1. A tissue-removing catheter for removing tissue from a body lumen, the catheter comprising:
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an elongate body having proximal and distal ends; a tissue-removing element adjacent the distal end of the elongate body, the tissue-removing element configured to engage and remove tissue from the body lumen; a tissue-containment chamber adjacent the distal end of the elongate body and configured to receive tissue removed by the tissue-removing element, the tissue-containment chamber defining a chamber lumen and having a proximal end connected to the distal end portion of the elongate body, a distal end opposite the proximal end, a longitudinal axis extending between the proximal and distal ends, and a tissue-removing opening adjacent to and spaced apart from the distal end thereof; a closure component in the chamber lumen of the tissue-containment chamber, the closure component being slidable longitudinally in a distal direction within the chamber lumen from a closed position, in which the closure component inhibits removed tissue in the tissue-containment chamber from exiting through the tissue-removing opening, to an open position, in which the closure component allows removed tissue in the tissue-containment chamber to exit through the tissue-removing opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of cleaning a tissue-removing catheter, the method comprising:
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inserting a tissue-removing catheter into a body lumen of a subject, the tissue-removing catheter including an elongate body having proximal and distal ends; removing tissue from the body lumen by engaging the tissue with a tissue-removing element adjacent the distal end of the elongate body; capturing the removed tissue from the body lumen in a tissue-containment chamber adjacent the distal end of the elongate body, wherein the tissue-containment chamber defines a chamber lumen and has a proximal end connected to the distal end portion of the elongate body, a distal end opposite the proximal end, a longitudinal axis extending between the proximal and distal ends, and a tissue-removing opening adjacent to and spaced apart from the distal end thereof, wherein a closure component in the chamber lumen of the tissue-containment chamber is in a closed position during said capturing the removed tissue to inhibit the removed tissue in the tissue-containment chamber from exiting through the tissue-removing opening; removing the tissue-removing catheter from the body lumen of the subject after said removing tissue from the body lumen using the tissue-removing catheter and said capturing the removed tissue; sliding, after said removing the tissue-removing catheter, the closure component longitudinally in a distal direction within the chamber lumen from the closed position to an the open position, in which the closure component allows removed tissue in the tissue-containment chamber to exit through the tissue-removing opening; forcing the removed tissue in the tissue-containment outside the tissue-containment chamber through the tissue-removing opening when the closure component is in the open position. - View Dependent Claims (18, 19, 20)
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21. A tissue-removing catheter for removing tissue from a body lumen, the catheter comprising:
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an elongate body having proximal and distal ends; a tissue-removing element adjacent the distal end of the elongate body, the tissue-removing element configured to engage and remove tissue from the body lumen; a tissue-containment chamber adjacent the distal end of the elongate body and configured to receive tissue removed by the tissue-removing element, the tissue-containment chamber defining a chamber lumen and having a proximal end connected to the distal end portion of the elongate body, a distal end opposite the proximal end, a longitudinal axis extending between the proximal and distal ends, and a tissue-removing opening adjacent to and spaced apart from the distal end thereof; and a closure component in the chamber lumen of the tissue-containment chamber, the closure component being slidable longitudinally within the chamber lumen between a closed position, in which the closure component inhibits removed tissue in the tissue-containment chamber from exiting through the tissue-removing opening, and an open position, in which the closure component allows removed tissue in the tissue-containment chamber to exit through the tissue-removing opening, wherein the closure component is selectively lockable in the closed position to inhibit unintentional movement of the closure component to the open position, and wherein the closure component is selectively unlockable in the closed position to allow movement of the closure component to the open position. - View Dependent Claims (22, 23, 24)
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Specification