Tissue ablation apparatus and method of ablating tissue

Details Tissue ablation apparatus and method of ablating tissue Tissue ablation apparatus and method of ablating tissue

A - Human Necessities

61

B

A61B 18/14 (2006.01)

Patent

CA 2547587

An apparatus and method for ablating tissue is disclosed. The apparatus comprises a source of microwave radiation (1), a probe (5) for directing the microwave radiation into tissue, one or more detectors for detecting the power and phase of the microwave radiation and an impedance adjuster (50) for adjusting impedance so as to minimize the amount of microwave radiation which reflected back through the probe. The detector or detectors use a local oscillator (230) to derive the phase information. A modulator for modulating the microwave radiation to a cutting frequency is also disclosed.

La présente invention concerne un appareil et un procédé d'ablation des tissus. L'appareil de l'invention comprend une source de rayonnement micro-ondes (1), une sonde (5) qui dirige le rayonnement micro-ondes dans un tissu, un ou plusieurs détecteurs qui détectent la puissance et la phase du rayonnement micro-ondes et un adaptateur d'impédance (50) qui adapte l'impédance de façon à minimiser la quantité de rayonnement micro-ondes réfléchie à travers la sonde. Le ou les détecteurs précités font appel à un oscillateur (230) pour dériver les informations relatives à la phase. L'invention se rapporte également à un modulateur qui module le rayonnement micro-ondes en une fréquence de coupe.

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