Electric pulse applicator using pairs of needle electrodes for the treatment of biological tissue
AssigneeCentre National De La Recherche Scientifique
InventorsLluis Mir, Stephane Orlowski, Michel Siros
Life of this patent
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Abstract
An electric pulse applicator for the treatment of biological tissue applies an electric field to the cells of biological tissue to modify the properties of their membranes. The electric pulse applicator includes electrodes and a pulse generator. The electrodes comprise at least three needles which are introduced into the tissue to be treated and which define a treatment volume. The needles are formed into pairs and a selector switch directs successive pulses produced by the pulse generator to each different pair of needles.
Claims21
Electric pulse applicator for the treatment of biological tissue allowing an electric field to be applied to cells of biological tissue in such a way as to modify properties of their membrane, comprising:
- electrodes, the electrodes including at least three needles intended to be introduced into the tissue to be treated and which define a treatment volume, said needles in twos forming pairs of needles;
- a pulse generator sending pulses to the electrodes, the pulse generator having a negative pole and a positive pole;
- a selector switch connected to and arranged between the pulse generator and the electrodes, the selector switch being able to connect each needle with either the negative pole or the positive pole of the pulse generator and thereby can direct the pulses produced by the pulse generator successively onto all the different pairs of needles;
- and
- a control mechanism connected to the selector switch and pulse generator for controlling the pulse generator and the selector switch so as to form any pairs of needles among the needles.
Dependencies are inferred from the claim text.