公开(公告)号：US20190030328A1

公开(公告)日：2019-01-31

申请号：US15663301

申请日：2017-07-28

Applicant: Medtronic, Inc.

Inventor： Mark T. STEWART ,  Brian T. HOWARD

IPC: A61N1/32 ,  A61N1/30 ,  A61B18/14

Abstract: A method, system, and device for electroporation. A system may include a medical device with a plurality of electrodes borne on an expandable element and an energy generator in communication with the electrodes. The energy generator may have processing circuitry configured to selectively deliver electroporation energy to at least one of the electrodes. The processing circuitry may determine whether an alert condition is present and, if so, cease the delivery of electroporation energy to one or more electrodes identified as the cause of the alert condition and/or prevent the delivery of electroporation energy to the one or more electrodes identified as the cause of the alert condition. The energy generator may also be configured to deliver electroporation energy in a sequence of a plurality of energy delivery patterns to enhance lesion formation.

公开(公告)号：US20180214202A1

公开(公告)日：2018-08-02

申请号：US15418325

申请日：2017-01-27

Applicant: Medtronic, Inc.

Inventor： Brian T. HOWARD ,  Mark T. STEWART ,  Damijan MIKLAVCIC ,  Bushan K. PURUSHOTHAMAN ,  Jeremy M. STIMACK

IPC: A61B18/14 ,  A61B5/042 ,  A61B34/20 ,  A61B5/00

Abstract: Methods, systems, and devices for enhancing the efficiency and efficacy of energy delivery and tissue mapping. One system includes a treatment element having a plurality of electrodes and an energy generator that is configured to deliver electric energy pulses to the electrodes in a variety of patterns. For example, electrodes may be arranged in closely spaced pairs. The energy generator may deliver mapping energy to each electrode in each pair individually to map tissue and may deliver ablation energy to the electrodes in each pair together, such that each pair is treated like a single electrode, to deliver ablation energy, such as bipolar ablation energy between adjacent pairs. One system includes at least one concave electrode, the configuration of which concentrates the energy and drives it deeper into the tissue. One system includes neutral electrodes between active electrodes, the energy generator selectively coupling the neutral electrodes to alter the ablation pattern.