System and method for synchronizing energy delivery to the cardiac rhythm
View Patent ↗A system for synchronizing application of treatment signals with a cardiac rhythm is provided. The system includes a memory that receives and stores a synchronization signal indicating that a predetermined phase such as R-wave of a cardiac rhythm of a patient has started. A synchronization module analyzes whether the stored synchronization signal is erroneous and if so, prevents a medical treatment device from applying a treatment energy signal such as an IRE pulse to a patient to take into account an irregular heart beat and noise in the synchronization signal in order to maximize safety of the patient.
1. A method for synchronizing application of treatment signals with a cardiac rhythm, comprising:
placing a medical treatment device at a target site within a patient
starting a system for synchronizing treatment signals with the cardiac rhythm, the system comprising:
a memory that receives and stores a first synchronization signal indicating that a predetermined phase of the cardiac rhythm of a patient has started; and
a synchronization module coupled to the memory to receive the first synchronization signal, a blanking period beginning after receiving the first synchronization signal, the synchronization module operable to automatically extend the blanking period the moment a second synchronization signal is received during the blanking period without stopping the blanking period to prevent the treatment signal from being applied to the patient during the blanking period; and
delivering a treatment signal when the blanking period has concluded.
2. The method of claim 1 , wherein the synchronization module dynamically adjusts the blanking period during which an application of the treatment signal to the patient by the medical treatment device is prevented.
3. The method of claim 2 , wherein the synchronization module is operable to dynamically extend the blanking period when a new synchronization signal is received before the blanking period expires.
4. The method of claim 2 , wherein the synchronization module is operable to start a new blanking period when a subsequent synchronization signal is received by the memory after the blanking period.
5. The method of claim 1 , wherein the synchronization module, after receiving the first synchronization signal, controls the medical treatment device to apply the treatment signal after waiting a predetermined time period from the receipt of the first synchronization signal.
6. The method of claim 5 , wherein the synchronization module controls the medical treatment device to apply at least one IRE pulse as the treatment signal.
7. The method of claim 1 , wherein the memory receives the first synchronization signal for each occurrence of an R-wave from a cardiac device.