| Patent application number | Description | Published |
|---|
| 20090143718 | PLASMA TREATMENT PROBE - A plasma treatment probe may include a hollow, tubular electrode defining an interior region, and a coaxial insulating tube configured to enclose the electrode. The insulating tube may form a gas flow outlet at one end. An outer chamber may enclose the insulating tube and the hollow electrode, and may have a gas inlet for receiving a gas mixture. The hollow electrode may be configured to receive nanosecond electric pulses, while a gas mixture flows from the gas inlet through the interior region of the electrode, so that a non-thermal plasma can be ignited that exits from the gas flow outlet onto a region of a patient's body to medically treat the region. | 06-04-2009 |
| 20100038971 | NANOSECOND PULSE GENERATOR - This invention relates to a pulse generator circuit for delivering a short high current pulse to a load. This pulse generator comprises a junction recovery diode, a switch, a first resonant circuit and a second resonant circuit. The diode may be configured to store charges in its depletion layer when there is a forward flow of a current and to rapidly switch open after the depletion layer is discharged by a reverse flow of a current. After the diode rapidly switch opens, the pulse generator may provide a reverse current to the load. This pulse generator may be configured to generate at least one pulse that is having a length of no more than 100 nanoseconds at the full-width-at-half-maximum and an amplitude of at least 1 kilovolt. Electrodes may be connected to the pulse generator to deliver one pulse or plurality of pulses to biological cells such as tumor cells. | 02-18-2010 |
| 20100141043 | HIGH VOLTAGE NANOSECOND PULSE GENERATOR USING FAST RECOVERY DIODES FOR CELL ELECTRO-MANIPULATION - A pulse generator circuit may include a diode configured to operate as an opening switch, a tank circuit in series with the diode having an admittance that is switchable from a first value to a second value that is different from the first value, and a switching system configured to cause the tank circuit to switch between the first value and the second value. The diode may saturate in less than 100 nanoseconds. A saturable core transformer may operate as a switch that controls the opening of the diode. The pulse generator may generate a plurality of pulses, each having a length of no more than 3 nanoseconds and an amplitude of at least 1 kilovolt. Electrodes may be connected to the pulse generator to deliver the plurality of pulses to biological cells. | 06-10-2010 |
| 20100156195 | NANOSECOND PULSE GENERATOR WITH A PROTECTOR CIRCUIT - This invention relates to a pulse generator circuit for delivering a short high current pulse to a load. This pulse generator comprises a junction recovery diode, a switch, a first resonant circuit and a second resonant circuit. The diode may be configured to store charges in its depletion layer when there is a forward flow of a current and to rapidly switch open after the depletion layer is discharged by a reverse flow of a current. After the diode rapidly switch opens, the pulse generator may provide a reverse current to the load. This pulse generator may be configured to generate at least one pulse that is having a length of no more than 100 nanoseconds at the full-width-at-half-maximum and an amplitude of at least 1 kilovolt. Electrodes may be connected to the pulse generator to deliver one pulse or plurality of pulses to biological cells such as tumor cells. | 06-24-2010 |
