| 主权项 |
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 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 from exiting through the tissue-removing opening. |
