US 12,478,769 B2
Cavitation catheter
Jonathan Ashley Cope, Santa Rosa, CA (US); Risa Tom Egerter, Galway (IE); Gerry Oliver McCaffrey, Galway (IE); Peter Glynn, Tuam (IE); Jack Wallis, Galway (IE); and Aran Murray, Galway (IE)
Assigned to Medtronic Vascular, Inc., Santa Rosa, CA (US)
Filed by Medtronic Vascular, Inc., Santa Rosa, CA (US)
Filed on Feb. 3, 2022, as Appl. No. 17/649,878.
Application 17/649,878 is a division of application No. 16/661,517, filed on Oct. 23, 2019, granted, now 11,266,817.
Claims priority of provisional application 62/750,456, filed on Oct. 25, 2018.
Prior Publication US 2022/0152364 A1, May 19, 2022
Int. Cl. A61M 25/10 (2013.01); A61B 17/22 (2006.01); A61M 25/00 (2006.01)
CPC A61M 25/104 (2013.01) [A61B 17/22012 (2013.01); A61B 17/22022 (2013.01); A61B 2017/22001 (2013.01); A61B 2017/22007 (2013.01); A61B 2017/22011 (2013.01); A61B 2017/22025 (2013.01); A61M 2025/0024 (2013.01); A61M 2025/1004 (2013.01); A61M 2025/1052 (2013.01); A61M 2025/1063 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A catheter comprising:
an elongated member configured to be navigated through vasculature of a patient to a target treatment site;
a first balloon connected to the elongated member, the first balloon being inflatable to an expanded state to occlude a proximal portion of a vessel proximal to the target treatment site;
a second balloon connected to the elongated member, the second balloon being inflatable to an expanded state to occlude a distal portion of the vessel distal to the target treatment site, and wherein when the first and second balloons are in the respective expanded states within the vessel, a cavity is defined between the elongated member and the target treatment site, the cavity being exterior to the first and second balloons;
an electrode integrally formed within the elongated member, the electrode comprising:
an outer electrically conductive band attached to the elongated member,
an inner electrically conductive band separated from the outer electrically conductive band by an electrically insulating layer, and
an aperture extending through the outer electrically conductive band and the electrically insulating layer to provide fluid communication between the inner and outer electrically conductive bands,
wherein each of the outer electrically conductive band and the inner electrically conductive band defines a cylindrical body extending around a majority of an outer perimeter of the elongated member, and
wherein the electrode is configured to be connected to an energy source configured to deliver an electrical signal to a fluid within the cavity and in contact with the electrode to cause the fluid to undergo cavitation to generate a pressure pulse wave within the fluid, and
an electrical wire extending along the elongated member, a surface of the electrical wire being exposed within the cavity, wherein the electrical wire is configured to be connected to the energy source configured to deliver an electrical signal between the surface of the electrical wire and the electrode.