US 11,051,842 B2
Tissue-removing catheter with guidewire isolation liner
Aram Jamous, Athenry (IE); John Kelly, Galway (IE); Matthew Fleming, Roscommon (IE); Colin William Meade, Westmeath (IE); and Grainne Teresa Carroll, Galway (IE)
Assigned to MEDTRONIC VASCULAR, INC., Santa Rosa, CA (US)
Filed by Medtronic Vascular, Inc., Santa Rosa, CA (US)
Filed on May 3, 2018, as Appl. No. 15/970,748.
Claims priority of provisional application 62/500,867, filed on May 3, 2017.
Claims priority of provisional application 62/500,879, filed on May 3, 2017.
Prior Publication US 2018/0317954 A1, Nov. 8, 2018
Int. Cl. A61B 17/3207 (2006.01); A61B 17/3205 (2006.01); A61M 25/00 (2006.01); A61B 17/00 (2006.01); A61B 17/32 (2006.01); A61B 17/22 (2006.01); A61B 90/00 (2016.01); A61M 25/01 (2006.01)
CPC A61B 17/320758 (2013.01) [A61B 17/00234 (2013.01); A61B 17/32002 (2013.01); A61B 17/32053 (2013.01); A61B 17/320783 (2013.01); A61M 25/0082 (2013.01); A61B 2017/0088 (2013.01); A61B 2017/00292 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00738 (2013.01); A61B 2017/00845 (2013.01); A61B 2017/22038 (2013.01); A61B 2017/320004 (2013.01); A61B 2017/320024 (2013.01); A61B 2017/320052 (2013.01); A61B 2017/320064 (2013.01); A61B 2017/320741 (2013.01); A61B 2017/320775 (2013.01); A61B 2090/0801 (2016.02); A61M 25/0108 (2013.01); A61M 2025/0096 (2013.01)] 20 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, the elongate body being sized and shaped to be received in the body lumen;
a handle mounted on to the proximal end portion of the elongate body and operable to cause rotation of the elongate body, the elongate body being moveable relative to the handle;
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; and
an inner liner received within the elongate body and coupled to the handle at a proximal end of the inner liner, the inner liner defining a guidewire lumen, the inner liner isolating an interior of the guidewire lumen from the elongate body and tissue-removing element such that rotational and torsional forces are not transferred from the elongate body and tissue-removing element to the interior of the guidewire lumen when the elongate body and tissue-removing element are rotated during operation of the tissue-removing catheter, wherein the inner liner is movably coupled to the handle such that the inner liner is configured to translate relative to the handle and prevented from rotation caused by the rotation of the elongate body, and wherein the inner liner is free of radial openings in the inner liner.