US 12,121,676 B2
Steerable catheter with multiple pull wires
Tri D. Tran, Fountain Valley, CA (US); Sean Chow, Tustin, CA (US); and Ronaldo C. Cayabyab, Mission Viejo, CA (US)
Assigned to EDWARDS LIFESCIENCES CORPORATION, Irvine, CA (US)
Filed by Edwards Lifesciences Corporation, Irvine, CA (US)
Filed on Sep. 21, 2020, as Appl. No. 17/026,644.
Application 17/026,644 is a division of application No. 16/128,294, filed on Sep. 11, 2018, granted, now 10,792,467.
Application 16/128,294 is a division of application No. 14/949,707, filed on Nov. 23, 2015, granted, now 10,076,638, issued on Sep. 18, 2018.
Claims priority of provisional application 62/088,449, filed on Dec. 5, 2014.
Prior Publication US 2021/0001090 A1, Jan. 7, 2021
Int. Cl. A61M 25/01 (2006.01); A61F 2/24 (2006.01); A61M 25/00 (2006.01)
CPC A61M 25/0147 (2013.01) [A61F 2/2436 (2013.01); A61M 25/0071 (2013.01); A61M 25/0136 (2013.01); A61F 2/2427 (2013.01); A61M 2025/0161 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A steerable catheter device, comprising:
a shaft having a proximal portion and a distal portion; and
first and second pull wires having respective proximal portions and respective distal portions, the proximal portions of the first and second pull wires extending through the proximal portion of the shaft in close proximity to each other, and the distal portions of the first and second pull wires extending through the distal portion of the shaft in close proximity to each other over a first distance defining a primary flexing section, diverging away from each other over a second distance, and then extending parallel to each other at angularly spaced locations over a third distance defining a secondary flexing section;
wherein greater tension applied to the first pull wire than the second pull wire is effective to flex the primary flexing section in a primary flexing plane (P) and flex the secondary flexing section in a first direction away from the flexing plane (P), and
wherein greater tension applied to the second pull wire than the first pull wire is effective to flex the primary flexing section in the flexing plane (P) and flex the secondary flexing section in a second direction opposite the first direction and away from the flexing plane (P).