US 12,426,904 B2
Intravascular lithotripsy catheter with oscillating impactor
Hoa D. Nguyen, San Jose, CA (US); and Patrick Stephens, Santa Clara, CA (US)
Assigned to Shockwave Medical, Inc., Santa Clara, CA (US)
Filed by Shockwave Medical, Inc., Santa Clara, CA (US)
Filed on Nov. 17, 2023, as Appl. No. 18/513,421.
Prior Publication US 2025/0160864 A1, May 22, 2025
Int. Cl. A61B 17/22 (2006.01)
CPC A61B 17/2202 (2013.01) [A61B 17/22022 (2013.01); A61B 2017/22021 (2013.01); A61B 2017/22024 (2013.01); A61B 2017/22025 (2013.01); A61B 2217/007 (2013.01); A61B 2560/04 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A catheter for treating an occlusion in a body lumen, the catheter comprising:
a hollow tubular body comprising a distal portion configured to move relative to a proximal portion of the hollow tubular body;
a conductor configured to receive a voltage pulse from a voltage source; and
an impactor mounted on, and at least partially encircling, the distal portion of the hollow tubular body, the impactor comprising a conductive portion adjacent to a distal end of the conductor;
wherein, when a voltage pulse is applied to the conductor, current flows across a gap between the conductor and the conductive portion to generate one or more shock waves that cause the impactor to move in a distal direction.