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1. (WO2018204685) TISSUE-REMOVING CATHETER WITH GUIDEWIRE ISOLATION LINER

Pub. No.:    WO/2018/204685    International Application No.:    PCT/US2018/030939
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Fri May 04 01:59:59 CEST 2018
IPC: A61B 17/3207
A61B 17/22
A61B 17/3205
A61B 90/00
Applicants: MEDTRONIC VASCULAR, INC.
Inventors: JAMOUS, Aram
KELLY, John
FLEMING, Matthew
MEADE, Colin
CARROLL, Grainne
Title: TISSUE-REMOVING CATHETER WITH GUIDEWIRE ISOLATION LINER
Abstract:
A tissue-removing catheter (10) for removing tissue in a body lumen includes an elongate body (12) and a tissue-removing element (20) mounted on a distal end portion of the elongate body (12). The tissue-removing element (20) is configured to remove the tissue as the tissue-removing element (20) is rotated by the elongate body (12) within the body lumen. An inner liner (14) is received within the elongate body (12) and coupled to a handle (40) at a proximal end of the inner liner (14). The inner liner (14) defines a guidewire (26) lumen. The inner liner (14) isolates an interior of the guidewire (26) lumen from the elongate body (12) and tissue-removing element (20) such that rotational and torsional forces are not transferred from the elongate body (12) and tissue-removing element (20) to the interior of the guidewire (26) lumen when the elongate body (12) and tissue-removing element (20) are rotated during operation of the tissue-removing catheter (10).