US 12,114,887 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 Jul. 2, 2021, as Appl. No. 17/366,669.
Application 17/366,669 is a continuation of application No. 15/970,748, filed on May 3, 2018, granted, now 11,051,842.
Claims priority of provisional application 62/500,879, filed on May 3, 2017.
Claims priority of provisional application 62/500,867, filed on May 3, 2017.
Prior Publication US 2021/0330347 A1, Oct. 28, 2021
Int. Cl. A61B 17/3207 (2006.01); A61B 17/00 (2006.01); A61B 17/32 (2006.01); A61B 17/3205 (2006.01); A61M 25/00 (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 2017/00292 (2013.01); A61B 2017/00398 (2013.01); A61B 2017/00477 (2013.01); A61B 2017/00738 (2013.01); A61B 2017/00845 (2013.01); A61B 2017/0088 (2013.01); A61B 2017/22001 (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 2025/0096 (2013.01); A61M 25/0108 (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 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, 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 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 removal of tissue from the body lumen; and
an atraumatic tip disposed on a distal end portion of the inner liner, the atraumatic tip being separate from the inner liner and attached to the inner liner, the atraumatic tip having an outer cross-sectional dimension that increases from a proximal end of the atraumatic tip to an intermediate location on the atraumatic tip and decreases from the intermediate location to a distal end of the atraumatic tip, an outer dimension of the atraumatic tip at the distal end being substantially the same as an outer dimension of the atraumatic tip at the proximal end;
wherein the inner liner is free of a balloon disposed on a distal end margin of the inner liner.