Pulse Biosciences, Inc. announced the filing of a premarket notification 510(k) to the U.S. Food and Drug Administration (FDA) for its novel CellFX nsPFA Cardiac Clamp. Pursuant to Section 510(k), once the application has been accepted, the FDA will conduct its substantive review and may request additional information from the Company based on that review. FDA guidance suggests the goal is to complete 510(k) review within 90 calendar days, not including time required by the Company to respond to additional information requests.

The time required to respond to any such requests will depend on the nature of the request. Pulse Biosciences' CellFX NSPFA Cardiac Clamp is designed to produce continuous linear transmural ablations during concomitant cardiac surgical procedures using the Company's novel CellFX system. The bipolar clamp utilizes the Company's proprietary nsPFA technology, a nonthermal ablation technology, and preclinical data suggest nsPFA may provide safety and performance benefits over the current thermal ablation technologies for cardiac ablation, such as the use of extreme heat or cold.

A single CellFX nsPFA Cardac Clamp ablation can be done in one-twentieth of the time of current thermal ablation technologies and, due to the nonthermal mechanism of action, does not have the risk of thermal spread leading to unintended collateral damage to adjacent tissue and structures.