US 12,239,341 B2
Tissue-removing catheter with a coupled inner liner
Rebecca Marie Helebert, Galway (IE); Thomas P. Hayden, Galway (IE); Aram Jamous, Galway (IE); Conor McMullen, Galway (IE); Tomas K. Kelly, Galway (IE); Michael James Donegan, Galway (IE); Eoin J. Walsh, Galway (IE); and Aran Murray, Galway (IE)
Assigned to MEDTRONIC VASCULAR, INC., Santa Rosa, CA (US)
Filed by MEDTRONIC VASCULAR, INC., Santa Rosa, CA (US)
Filed on Mar. 9, 2022, as Appl. No. 17/654,230.
Claims priority of provisional application 63/167,834, filed on Mar. 30, 2021.
Prior Publication US 2022/0313307 A1, Oct. 6, 2022
Int. Cl. A61B 17/3207 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/320758 (2013.01) [A61B 2017/00336 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00876 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A tissue-removing catheter for removing tissue in a body lumen, the tissue-removing catheter comprising:
an elongate body having an axis, and proximal and distal end portions spaced apart from one another along the axis, wherein the elongate body is sized and shaped to be received in the body lumen;
a handle mounted to the proximal end portion of the elongate body, the handle comprising a housing enclosing components operable to cause rotation of the elongate body;
a tissue-removing element mounted on the distal end portion of the elongate body, the tissue-removing element being configured to remove the tissue as the tissue-removing element is rotated by the elongate body within the body lumen;
an inner liner received within the elongate body and defining a guidewire lumen;
an advancer mounted on the handle and movable relative to the housing;
a guide tube within the housing of the handle and coupled to the advancer;
a coupling sleeve within the housing of the handle and having a distal end portion coupled to a proximal end portion of the guide tube;
a liner key received in and coupled to the coupling sleeve, wherein a proximal end portion of the inner liner is coupled to the liner key; and
a buckle tube fixed within the housing of the handle, wherein the coupling sleeve is slidably received in the buckle tube,
wherein movement of the advancer causes a corresponding movement of the guide tube, the coupling sleeve, the liner key, the elongate body, and the inner liner relative to the handle and the buckle tube to exert a push force on the tissue-removing element to advance the tissue-removing element and a pull force on the tissue-removing element to retract the tissue-removing element for moving the tissue-removing element relative to the handle.