US 12,433,618 B2
Ultrasonic catheter, device, and system
Aseem Singh, Tempe, AZ (US)
Assigned to Bard Peripheral Vascular, Inc., Franklin Lakes, NJ (US)
Appl. No. 17/995,437
Filed by Bard Peripheral Vascular, Inc., M/C 110 IP Ops, NJ (US)
PCT Filed Apr. 22, 2020, PCT No. PCT/US2020/029198
§ 371(c)(1), (2) Date Oct. 4, 2022,
PCT Pub. No. WO2021/216052, PCT Pub. Date Oct. 28, 2021.
Prior Publication US 2023/0172624 A1, Jun. 8, 2023
Int. Cl. A61B 17/22 (2006.01)
CPC A61B 17/2202 (2013.01) [A61B 2217/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An ultrasonic catheter, comprising:
an elongate flexible catheter sheath having a lumen;
an ultrasonic transmission member extending longitudinally within the lumen of the elongate flexible catheter sheath, the ultrasonic transmission member having a proximal portion and a distal portion, the proximal portion configured to receive vibration energy;
a catheter body coupled to the elongate flexible catheter sheath, the catheter body having a fluid inlet port and an inner cavity in fluid communication with the fluid inlet port, the fluid inlet port configured to facilitate passage of a heat dissipating fluid into the inner cavity;
a plurality of O-ring members disposed around and contacting the proximal portion of the ultrasonic transmission member;
an O-ring housing located in the inner cavity of the catheter body, the O-ring housing having an outer surface, an interior surface, and an O-ring cavity defined by the interior surface, the O-ring cavity configured to contain the plurality of O-ring members, and wherein the ultrasonic transmission member extends through an entirety of the O-ring housing; and
a perimetrical fluid channel defined between the outer surface of the O-ring housing and the catheter body, and the O-ring housing configured such that the heat dissipating fluid flows into the perimetrical fluid channel and across the outer surface of the O-ring housing to dissipate heat from the plurality of O-ring members.