Shock wave device with polarity switching
AssigneeShockwave Medical, Inc.
InventorsVincent Wenchung KU, Camilo Perez SAAIBI
Life of this patent
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Abstract
Described here are devices and methods for forming shock waves. The devices may comprise an axially extending elongate member. A first electrode pair may comprise a first electrode and a second electrode. The first electrode pair may be provided on the elongate member and positioned within a conductive fluid. A controller may be coupled to the first electrode pair. The controller may be configured to deliver a series of individual pulses to the first electrode pair, where each pulse creates a shock wave. The controller may cause current to flow through the electrode pair in a first direction for some of the pulses in the series and in a second direction opposite the first direction for the remaining pulses in the series.
Claims26
A shock wave device comprising:
- an axially extending elongate member;
- a first electrode pair comprising a first electrode and a second electrode, wherein the first electrode pair is provided on the elongate member and positioned within a conductive fluid;
- and
- a controller coupled to the first electrode pair, wherein the controller is configured to deliver a series of individual pulses to the first electrode pair such that each of the pulses creates a shock wave in the conductive fluid, wherein the controller causes current to flow through the electrode pair in a first direction for some of the pulses in the series and in a second direction opposite the first direction for the remaining pulses in the series, and wherein the current flows in the second direction for between twenty five percent and fifty percent of the pulses in the series.
A shock wave device comprising:
- an axially extending elongate member;
- a first electrode assembly comprising a first electrode pair and a second electrode pair, wherein the first electrode assembly is provided on the elongate member and positioned within a conductive fluid;
- and
- a controller coupled to the first electrode assembly, wherein the controller is configured to deliver a series of individual pulses to the first electrode assembly such that each of the pulses creates a shock wave in the conductive fluid, wherein the controller causes current to flow through the electrode assembly in a first direction for some of the pulses in the series and in a second direction opposite the first direction for the remaining pulses in the series, and wherein the current flows in the second direction for between twenty five percent and fifty percent of the pulses in the series.
A method of forming shock waves comprising:
- advancing a shock wave device into a blood vessel, wherein the shock wave device comprises an axially extending elongate member, and a first electrode pair comprising a first electrode and a second electrode, wherein the first electrode pair is provided on the elongate member and positioned within a conductive fluid;
- and
- delivering a series of individual pulses to the first electrode pair to create shock waves in the conductive fluid to cause current to flow through the electrode pair in a first direction for some of the pulses in the series and in a second direction opposite the first direction for the remaining pulses in the series, wherein the current flows in the second direction for between twenty five percent and fifty percent of the pulses in the series.
Dependencies are inferred from the claim text.