Loading patent…
AssigneeCardiovascular Systems, Inc.
InventorsGregory B. Ingersoll, Matthew W. Tilstra
Estimating the term…
Intravascular lithotripsy (IVL) devices and fault detection of the electrical circuit including one or more emitters. A balanced current circuit includes a high voltage source, a control, and at least one emitter comprising a pair of electrodes across which a spark is to be generated. In a normal working condition, a closed loop electrical circuit with voltage applied via two conductors and current flowing between them when a spark is established. Under normal conditions, current IC on a first conductor from the control to the emitter is the same as current IR returning on a second conductor from the emitter back to the high voltage source and the circuit is in a balanced state. In a balanced state, there is no indication of current leakage from the circuit. In an unbalanced state, current IR is less that current IC, indicating an imbalance of the circuit that suggests a loss or leakage of a current IF.
A method of determining a fault of an intravascular lithotripsy (IVL) device comprising a catheter with at least one emitter distal from a control module, a first conductor electrically running from the control module to and connected with the emitter, and a second conductor electrically running from and connected with the emitter to the control module, the first and second conductors electrically connected with a high voltage pulse generator by way of the control module as a system with the IVL device, the method comprising:
A system of determining a fault of an intravascular lithotripsy (IVL) device comprising a catheter with at least one emitter distal from a control module, a first conductor electrically running from the control module to and connected with the emitter, and a second conductor electrically running from and connected with the emitter to the control module, the first and second conductors electrically connected with a high voltage pulse generator by way of the control module as a system with the IVL device, the system being connectible with a high voltage pulse at the high voltage pulse generator for creating a spark at the emitter by way of the high voltage pulse, the system further comprising a sensor for measuring a supply current though the first conductor and a sensor for measuring a return current through the second conductor so that the supply current can be compared with the return current to find any imbalance of the supply current to the return current.
A system of determining a fault of an intravascular lithotripsy (IVL) device comprising a catheter with at least one emitter distal from a control module, the emitter comprises an electrode pair having electrodes spaced from one another for creating a spark across the electrode pair when a high voltage pulse is generated, the IVL device further comprising a first conductor electrically running from the control module to and connected with the emitter, and a second conductor electrically running from and connected with the emitter to the control module, the first and second conductors electrically connected with a high voltage pulse generator by way of the control module as a system with the IVL device, the system being connectible with a high voltage pulse at the high voltage pulse generator for creating a spark at the emitter by way of the high voltage pulse, the system further comprising a sensor for measuring a supply current though the first conductor and a sensor for measuring a return current through the second conductor so that the supply current can be compared with the return current to find any imbalance of the supply current to the return current, wherein either:
Dependencies are inferred from the claim text.