Pulse Biosciences has been granted a patent for an apparatus and method for delivering high voltage, sub-microsecond pulsed electrical energy to biological materials. The invention involves the use of multi-core pulse transformers with independent transformer cores arranged in parallel to reduce inductance and improve efficiency. The apparatus also includes high voltage switch drivers and switches for precise control of the pulsed energy delivery. GlobalData’s report on Pulse Biosciences gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Pulse Biosciences, Target mapping ablation catheters was a key innovation area identified from patents. Pulse Biosciences's grant share as of September 2023 was 38%. Grant share is based on the ratio of number of grants to total number of patents.

Patent granted for apparatus delivering pulsed electrical energy

Source: United States Patent and Trademark Office (USPTO). Credit: Pulse Biosciences Inc

A recently granted patent (Publication Number: US11766563B2) describes an apparatus for delivering pulsed electrical energy. The apparatus includes one or more multi-core pulse transformers, each consisting of a first and second transformer core. The first transformer core has primary and secondary windings, as does the second transformer core. The primary windings of the first transformer core are connected to the primary windings of the second transformer core, while the secondary windings of the first transformer core are connected to the secondary windings of the second transformer core. The apparatus also includes high voltage switch drivers connected to the primary windings and high voltage switches connected to the secondary windings. The first and second transformer cores are arranged electrically in parallel between the high voltage switch drivers and the high voltage switches.

The patent also describes the use of MOSFETs as the high voltage switches and MOSFET drivers as the high voltage switch drivers. The primary windings are electrically parallel, as are the secondary windings. The first transformer core is independent from the second transformer core and is located on one side of a printed circuit board (PCB), while the second transformer core is located on the opposite side of the PCB. The primary and secondary windings of both transformer cores are coaxially arranged relative to each other.

The apparatus can be configured as part of a pulse generator system, which includes a pulse generator and a handpiece. The handpiece is designed to deliver a high voltage pulsed output generated by the pulse generator and may have a removable tip with multiple electrodes. The patent also mentions that the multi-core pulse transformers can have more than two transformer cores.

In addition to the apparatus, the patent also describes a method of generating a pulsed output using the apparatus. The method involves emitting a driving pulse from a high voltage switch driver to the multi-core pulse transformer through the primary windings of the first and second transformer cores, and receiving the driving pulse at a high voltage switch from the secondary windings of the transformer cores. The pulsed output generated by the method is in the nanosecond range.

Overall, this patent presents an apparatus and method for delivering pulsed electrical energy using multi-core pulse transformers, high voltage switch drivers, and high voltage switches. The design allows for efficient and precise delivery of pulsed energy, making it suitable for applications such as pulse generator systems used in medical or industrial settings.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.