US 12,138,403 B2
Centering coiled guide
Ioana Deac, Vaudreuil-Dorion (CA)
Assigned to Medtronic CryoCath LP, Toronto (CA)
Filed by Medtronic CryoCath LP, Toronto (CA)
Filed on Feb. 17, 2021, as Appl. No. 17/177,667.
Application 17/177,667 is a continuation of application No. 15/816,412, filed on Nov. 17, 2017, granted, now 10,953,198.
Application 15/816,412 is a continuation of application No. 14/518,545, filed on Oct. 20, 2014, granted, now 9,839,766, issued on Dec. 12, 2017.
Prior Publication US 2021/0170144 A1, Jun. 10, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 25/01 (2006.01); A61B 18/00 (2006.01); A61M 25/00 (2006.01)
CPC A61M 25/0147 (2013.01) [A61M 25/0043 (2013.01); A61M 25/0144 (2013.01); A61B 18/00 (2013.01); A61M 2025/0059 (2013.01); A61M 25/0138 (2013.01); A61M 2025/0161 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A coiled guide lumen defining a longitudinal axis, the coiled guide lumen comprising:
at least one first coil having a first outer diameter and a first length along the longitudinal axis;
at least one second coil distal to the at least one first coil and at least one third coil proximal to the at least one first coil, each of the at least one second coil and the at least one third coil having a second outer diameter, the second outer diameter being less than the first outer diameter, the at least one second coil and the at least on third coil each having a second length along the longitudinal axis;
a plurality of fourth coils distal to the at least one second coil and a plurality of fifth coils proximal to the at least one third coil, each of the plurality of fourth coils and the plurality of fifth coils having a third outer diameter, the third outer diameter being less than the second outer diameter, the plurality of fourth coils and the plurality of fifth coils each having a third length along the longitudinal axis; and
a secondary guide lumen that is passed through the plurality of forth coils and the plurality of fifth coils, such that the secondary guide lumen and the coiled guide lumen are coaxial, the secondary guide lumen being composed of polyimide, a material having a low coefficient of friction; and
one or more pull wires extending through the secondary guide lumen.