US 11,701,192 B2
Steerable catheter with shaft load distributions
Miles Joseph, San Jose, CA (US); and Francis Macnamara, Mountain View, CA (US)
Assigned to Auris Health, Inc., Redwood City, CA (US)
Filed by Auris Health, Inc., Redwood City, CA (US)
Filed on Sep. 30, 2019, as Appl. No. 16/588,890.
Application 16/588,890 is a division of application No. 15/248,316, filed on Aug. 26, 2016, granted, now 10,463,439.
Prior Publication US 2020/0038128 A1, Feb. 6, 2020
Int. Cl. A61B 34/00 (2016.01); A61B 34/30 (2016.01); A61M 25/01 (2006.01); A61B 34/37 (2016.01)
CPC A61B 34/71 (2016.02) [A61B 34/30 (2016.02); A61M 25/0147 (2013.01); A61B 34/37 (2016.02); A61B 2034/301 (2016.02); A61B 2034/715 (2016.02); A61M 2025/015 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A multiple-bend steerable catheter, comprising:
(a) a flexible elongate catheter body, comprising:
(i) a catheter wall forming a central lumen,
(ii) a proximal end,
(iii) a distal end,
(iv) a distal articulating section at the distal end of the catheter body,
(v) a proximal non-articulating section at the proximal end of the catheter body, and
(vi) a proximal articulating section located between the distal articulating section and the proximal non-articulating section; and
(b) multiple pullwires within the catheter wall fixed to the distal end of the catheter body and extending along the catheter body to the proximal end, wherein the multiple pullwires include a first set of pullwires operable to drive articulation of the distal articulating section, the pullwires of the first set being angularly spaced apart from each other by a first distance in the proximal articulating section, the pullwires of the first set being angularly spaced apart from each other by a second distance in the distal articulating section, the second distance being less than the first distance.