Abstract:
Described herein are elongate applicator tools adapted to be inserted into a body to deliver high voltage, sub-microsecond electrical energy to target tissue. These tools may be configured as laparoscopes, endoscopes, and/or catheters. Also disclosed herein systems including these tools and method of their operation.
Abstract:
Described herein are flexible catheters adapted to be inserted into a body to deliver highvoltage, fast (e.g., microsecond, sub-microsecond, nanosecond, picosecond, etc.) electrical energy to target tissue. Also disclosed herein systems including these catheters and method of using them to treat tissue.
Abstract:
An optimization of electrical characteristics for treatments of tumor or other abnormal cells in culture with sub-microsecond, high-electric field electrical pulses is disclosed. The voltages, pulse widths, and number of pulses are chosen such that the treatment energy is 10-20 J/mL. That is, U = n * Δt * V * I / volume is 10-20 J/mL, in which n is the number of pulses, Δt is the duration of each pulse, V is the voltage, I is current, and volume is the area of parallel electrodes times the distance between them. V divided by the distance between the electrodes can be in an effective range of 6 kV/cm to 30 kV/cm, 60 kV/cm, 100 kV/cm, or higher intensities. Rows of needle electrodes, blade electrodes, or other configurations of electrodes can approximate parallel electrodes.
Abstract translation:公开了用亚微秒高电场电脉冲治疗肿瘤或其他异常细胞的电特性的优化。 选择电压,脉冲宽度和脉冲数以使处理能量为10-20J / mL。 也就是说,U = n *Δt* V * I /体积为10-20 J / mL,其中n为脉冲数,Δt为每个脉冲的持续时间,V为电压,I为电流,体积 平行电极的面积乘以它们之间的距离。 V除以电极之间的距离可以处于6kV / cm至30kV / cm,60kV / cm,100kV / cm或更高强度的有效范围内。 针电极,刀片电极或其他电极配置的行可以接近平行电极。 p>
Abstract:
Described herein are methods (including cosmetic methods) and apparatuses for delivery of sub-microsecond electrical field pulses to enhance effects of a toxin, such as (but not limited to) botulinum toxin (BoNT).
Abstract:
Described herein are methods and apparatuses for reducing or eliminating skin glands (e.g., sebaceous, eccrine and apocrine) with an electric treatment. Also described herein are methods for treating and/or preventing a disorder of a skin gland. For example, described herein are methods of treating sebaceous hyperplasia.
Abstract:
A sub-microsecond pulsed electric field generator is disclosed. The field generator includes a controller, which generates a power supply control signal and generates a pulse generator control signal, and a power supply, which receives the power supply control signal and generates one or more power voltages based on the received power supply control signal. The field generator also includes a pulse generator which receives the power voltages and the pulse generator control signal, and generates one or more pulses based on the power voltages and based on the pulse generator control signal. The controller receives feedback signals representing a value of a characteristic of or a result of the pulses and generates at least one of the power supply control signal and the pulse generator control signal based on the received feedback signals.
Abstract:
Methods and systems for testing a pulse generator circuit are disclosed. The methods include calculating one or more impedances of a load from applied pulses and comparing the one or more impedances with an expected impedance. The results of the comparison are used to determine whether the pulse generator system is working properly, whether the therapeutic treatment may be initiated or continued, or whether parameters of the pulses should be changed. The pulses may be therapeutic or test pulses, and they may have various parameters of voltage, duration, frequency, or any other electrical parameter. The methods of the disclosure may be performed by a treatment system comprising a controller.
Abstract:
A handheld, therapeutic electrode and connector that are compatible with high voltages from a pulse generator are disclosed. The electrode includes therapeutic terminals on a tip configured to deliver high voltage pulses safely to a patient. The electrode includes sleeves, bosses, wiring channels, and other features that maximize a minimum clearance distance (across non-conductive surfaces) and air clearance between conductive connectors themselves or the connectors and a user, thus preventing dangerous arcing. Internal surfaces and seams are taken into account. The connector and its mating outlet can include similar features to maximize clearance distance. Skirts, skirt holes, and finger stops are also employed, and they can be on either the connector or outlet, or the tip or handle of the electrode.
Abstract:
The pulse applicator includes a first arm, including a first electrode, a second arm, including a second electrode, and a spacer. The first arm, the spacer, and the second arm are movably connected, and define a gap between the first arm and the second arm. The first electrode, the gap, and the second electrode are selectively alignable, and the first electrode and the second electrode are configured to deliver an electrical field across the gap in response to an electrical pulse received across the first and second electrodes.