Abstract: An apparatus with collaborative operation between high-voltage pulse field ablation and an electrophysiological recording system pertains to the field of medical devices and includes a high-voltage power supply, an energy storage capacitor, a discharge circuit, a high-frequency high-voltage pulse signal generation circuit, a switch array circuit and a control system. The energy storage capacitor is connected respectively to the high-voltage power supply, the discharge circuit and the high-frequency high-voltage pulse signal generation circuit. The switch array is connected respectively to the high-frequency high-voltage pulse signal generation circuit, a catheter and the electrophysiological recording system. The control system is connected respectively to the high-voltage power supply, the discharge circuit, the high-frequency high-voltage pulse signal generation circuit, the switch array circuit, a cardiac electrical signal monitor and a foot pedal switch.

Abstract: This invention provides a painted surface treating composition which includes a dispersion medium and an abrasive dispersing in the dispersion medium, and said abrasive has an average particle diameter of 12-55 ?m and a Mohs' hardness of 5.5-6. A painted surface treating method and a painted surface patching method using this painted surface treating composition are also provided.