US 11,654,276 B2
Catheter pump
Keif M. Fitzgerald, San Jose, CA (US); Richard L. Keenan, Livermore, CA (US); and William J. Harrison, Signal Mountain, TN (US)
Assigned to TC1 LLC, St. Paul, MN (US)
Filed by TC1 LLC, St. Paul, MN (US)
Filed on Oct. 31, 2020, as Appl. No. 17/86,377.
Application 16/110,648 is a division of application No. 15/172,664, filed on Jun. 3, 2016, granted, now 10,086,121, issued on Oct. 2, 2018.
Application 15/172,664 is a division of application No. 13/801,528, filed on Mar. 13, 2013, granted, now 9,358,329, issued on Jun. 7, 2016.
Application 17/086,377 is a continuation of application No. 16/110,648, filed on Aug. 23, 2018, granted, now 11,058,865.
Claims priority of provisional application 61/667,903, filed on Jul. 3, 2012.
Prior Publication US 2021/0046229 A1, Feb. 18, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 60/857 (2021.01); A61M 60/13 (2021.01); A61M 60/174 (2021.01); A61M 60/216 (2021.01); A61M 60/81 (2021.01); A61M 60/148 (2021.01); A61M 60/414 (2021.01); A61M 60/825 (2021.01); A61M 60/508 (2021.01); A61M 60/411 (2021.01)
CPC A61M 60/857 (2021.01) [A61M 60/13 (2021.01); A61M 60/174 (2021.01); A61M 60/216 (2021.01); A61M 60/411 (2021.01); A61M 60/508 (2021.01); A61M 60/81 (2021.01); A61M 60/825 (2021.01); A61M 60/148 (2021.01); A61M 60/414 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A catheter pump assembly, comprising:
an elongate body having a distal end and a proximal end opposite the distal end;
an expandable cannula coupled with the distal end of the elongate body, the expandable cannula comprising a mesh structure that includes a plurality of struts defining an impeller zone and a plurality of helical zones extending at least proximate the impeller zone, and a distal zone disposed distally of the impeller zone, wherein the expandable cannula is formed by enclosing a plurality of circumferential members with a polymer, wherein each strut extends one of distally or proximally in an alternating pattern about a circumference of the expandable cannula to define pattern of distally oriented apices and proximally oriented apices;
an impeller coupled with the distal end of the elongate body and having a stowed configuration and an expanded configuration, the impeller configured to rotate within the impeller zone of the expandable cannula in the expanded configuration to induce fluid flow within the expandable cannula;
a plurality of circumferential connectors disposed between alternating struts of adjacent circumferential members in at least one of the distal zone and the impeller zone,
wherein at least one region of the mesh structure further comprises a first plurality of axial connectors each disposed between a proximal side of a proximal apex and a distal side of an adjacent circumferential member in the impeller zone; and
wherein at least one region of the mesh structure further comprises a second plurality of axial connectors each disposed between a proximal side of a proximal apex and a distal side of an adjacent circumferential member in the distal zone of the cannula.