US 12,011,185 B2
Intravascular lithotripsy catheter with interfering shock waves
Khanh Vo, Santa Clara, CA (US)
Assigned to SHOCKWAVE MEDICAL, INC., Santa Clara, CA (US)
Filed by Shockwave Medical, Inc., Santa Clara, CA (US)
Filed on Aug. 22, 2023, as Appl. No. 18/236,631.
Application 18/236,631 is a division of application No. 17/967,544, filed on Oct. 17, 2022, granted, now 11,779,363.
Claims priority of provisional application 63/257,397, filed on Oct. 19, 2021.
Prior Publication US 2023/0404605 A1, Dec. 21, 2023
Int. Cl. A61B 17/22 (2006.01)
CPC A61B 17/22022 (2013.01) [A61B 2017/22025 (2013.01); A61B 2017/22038 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A catheter for treating an occlusion in a body lumen, the catheter comprising:
an elongated tube;
a flexible enclosure wrapped circumferentially around at least a portion of the elongated tube, the flexible enclosure being fillable with a conductive fluid;
a conductive sheath mounted circumferentially around the elongated tube;
a first electrode pair located inside the flexible enclosure, formed in part by the conductive sheath, and configured to generate shock waves, the first electrode pair having a first electrode and a second electrode spaced apart by a gap;
a second electrode pair located inside the flexible enclosure, formed in part by the conductive sheath, and configured to generate shock waves, the second electrode pair having a first electrode and a second electrode spaced apart by a gap; and
wherein the gap of the second electrode pair is circumferentially offset from the gap of the first electrode pair by an angle of less than 180 degrees such that when a voltage is applied across the first electrode pair and the second electrode pair, shock waves generated at the first electrode pair and the second electrode pair constructively interfere to produce a combined shock wave.