US 12,064,129 B2
Shock wave electrodes
Hoa D. Nguyen, San Jose, CA (US); and John M. Adams, Snohomish, WA (US)
Assigned to SHOCKWAVE MEDICAL, INC., Santa Clara, CA (US)
Filed by Shockwave Medical, Inc., Santa Clara, CA (US)
Filed on Apr. 20, 2022, as Appl. No. 17/725,435.
Application 17/725,435 is a division of application No. 16/691,449, filed on Nov. 21, 2019, granted, now 11,337,713.
Application 16/691,449 is a division of application No. 15/346,132, filed on Nov. 8, 2016, granted, now 10,555,744, issued on Feb. 11, 2020.
Claims priority of provisional application 62/257,141, filed on Nov. 18, 2015.
Prior Publication US 2022/0240958 A1, Aug. 4, 2022
Int. Cl. A61B 17/22 (2006.01)
CPC A61B 17/2202 (2013.01) [A61B 17/22022 (2013.01); A61B 2017/22001 (2013.01); A61B 2017/22021 (2013.01); A61B 2017/22025 (2013.01); A61B 2017/22061 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A treatment catheter comprising:
an axially extending elongate member;
a cylindrical conductive band mounted on the elongate member, the cylindrical conductive band having a spiral groove beginning near one end of the cylindrical conductive band and terminating intermediate the length of the cylindrical conductive band;
a first wire having a first end electrically connectable to a voltage source and having a second end received in the spiral groove, the tip of the second end of the wire being spaced from the terminated end of the groove to define a spark gap;
a second wire having a first end electrically connectable to a voltage source and a second end electrically connected to the cylindrical conductive band; and
a tube connected to the elongate member and surrounding the cylindrical conductive band, the tube being fillable with a conductive liquid, wherein when a voltage pulse is applied across the first and second wires a current will flow across the spark gap and generate a shock wave in the liquid.