Patent ID: 11950793
Assignee: SHOCKWAVE MEDICAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A catheter for treating occlusions in blood vessels, comprising:
a tubular inner member;
an emitter assembly comprising:
a first insulated wire extending along a length of the tubular inner member with an uninsulated distal face;
a second insulated wire extending along the length of the tubular inner member having an uninsulated distal face, the second insulated wire being circumferentially offset from the first insulated wire;
an electrically conductive sheath wrapped circumferentially around the first insulated wire and the second insulated wire with a first spark gap extending between the electrically conductive sheath and the distal face of the first insulated wire and a second spark gap extending between the electrically conductive sheath and the distal face of the second insulated wire; and
a flexible member sealably attached to a distal end of the catheter and surrounding the emitter assembly, said flexible member being fillable with conductive fluid, wherein when the flexible member is filled with the conductive fluid and an electrical pulse is applied across the first and second wires, first and second shock waves will be initiated from the first and second spark gaps.