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US 11,376,064 B2Granted
Apparatus and method for cardiac ablation
AssigneeDot Medical Ltd.
InventorIan Roderick Rankin
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Abstract
The invention comprises an apparatus for performing cardiac ablation by electroporation comprising: an applicator comprising a plurality of electrodes (16) each operable in use to supply an electrical potential across cells within an area of tissue (12); and a means to control the waveform of the electrical potential supplied by the plurality of electrodes, configured to provide a biphasic, truncated waveform with leading and trailing edges of differing magnitude.
Claims22
An apparatus for performing cardiac ablation comprising:
- an applicator comprising a plurality of electrodes each operable in use to supply an electrical potential across cells within an area of tissue;
- and a waveform generator configured to generate a waveform of the electrical potential supplied by the plurality of electrodes, wherein the waveform comprises a biphasic, truncated waveform with leading and trailing edges of differing magnitude and the waveform generator is programmed to truncate the waveform after the magnitude of the electrical potential has decayed by a pre-determined amount.
A method of cardiac ablation comprising the steps of:
- (a) locating an applicator within a heart;
- (b) using a plurality of electrodes within the applicator to supply an electrical potential across cells within one or more areas of tissue within the heart;
- wherein the electrical potential supplied across the cells acts to rupture said cells to form a lesion within the tissue;
- and
- the method further comprises:
- controlling the waveform of the electrical potential to control the electrical potential supplied across the cells;
- defining the position of at least one leading edge and at least one trailing edge of the waveform of the electrical potential supplied across the cells, wherein defining the trailing edge of the waveform truncates the waveform after the magnitude of the electrical potential has decayed by a pre-determined amount.
4 more elements
Dependencies are inferred from the claim text.