Treatment apparatus and methods for delivering energy at...

A - Human Necessities – 61 – B

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A61B 18/14 (2006.01)

Patent

CA 2623991

Treatment apparatus and methods for delivering energy at multiple selectable tissue depths as selected by a clinician. The treatment apparatus (10) includes at least two electrodes (56, 60) that are electrically isolated from each other, which permits each electrode to be independently energized for selecting different treatment depths. The electrodes (56, 60) may be concurrently energized with high frequency energy of the same polarity in a monopolar mode to deliver energy at a relatively deep depth into a patient's tissue (24), or with high frequency energy of a different polarity in a bipolar mode to provide a shallower penetration depth. Alternatively, the depth of energy delivery may be modified by energizing less than all of the electrodes (56, 60). The electrodes (56, 60) may be energized with high frequency energy of different phase relationships to deliver energy concurrently in both monopolar and bipolar modes with the phase difference determining a depth of energy delivery.

L'invention porte sur un appareil et des procédés de traitement permettant de délivrer de l'énergie à différentes profondeurs réglables par le praticien dans des tissus. L'appareil de traitement (10) comporte au moins deux électrodes (56, 60) électriquement isolées l'une de l'autre, ce qui permet de les alimenter indépendamment pour sélectionner différentes profondeurs de traitement. Les électrodes (56, 60) peuvent être alimentées concurremment en énergie HF de même polarité en mode monopolaire pour fournir de l'énergie à une profondeur relativement importante dans un tissu du patient (24), ou en énergie HF de polarité différente en mode bipolaire pour une pénétration moins importante. En variante, la profondeur peut être modifiée en alimentant moins de la totalité des électrodes (56, 60), ou encore, les électrodes peuvent être alimentées concurremment en mode monopolaire et bipolaire, la différence de phase permettant alors de fixer la profondeur de délivrance de l'énergie.

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