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公开(公告)号：US20180228528A1
公开(公告)日：2018-08-16
申请号：US15432134
申请日：2017-02-14
Applicant: Medtronic, Inc.
Inventor： Steven J. FRAASCH , Catherine R. CONDIE , Trenton J. REHBERGER , Mark T. STEWART , Qin ZHANG
Abstract: Systems and methods to confirm safe delivery of treatment energy to a patient by identifying a presence of a fault in an energy delivery pathway and identifying a location of the fault within the device. The system includes a processing unit configured to calculate blood impedances external to the device based on known impedance characteristics of the device, and then to calculate impedances within the device during energy delivery based on the calculated blood impedances. The processing unit prevents the delivery of energy in an energy delivery pathway that is determined to be compromised. The processing unit is also configured to compare times for two different frequencies to travel a predetermined distance, the difference in the times corresponding to a location of a fault within the energy delivery pathway.
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公开(公告)号：US20180214195A1
公开(公告)日：2018-08-02
申请号：US15418217
申请日：2017-01-27
Applicant: Medtronic, Inc.
Inventor： Steven J. FRAASCH , Catherine R. CONDIE , Brian T. HOWARD , Louis JACOB , Paul S. LAM , Trenton J. REHBERGER , Mark T. STEWART , Qin ZHANG
IPC: A61B18/12 , A61B5/0452 , A61B5/0456 , A61B5/042 , A61B5/00 , A61N1/30 , A61B18/14 , H02H3/16 , H02H1/00
Abstract: A system and method for the safe delivery of treatment energy to a patient, which includes verification of system integrity before, during, or after the delivery of treatment energy and provides several mechanisms for rapid termination of the delivery of potentially harmful energy to the patient when a fault condition in the device and/or system is identified. The system may include an energy generator having processing circuitry to determine if there is a fault condition in the system and to automatically terminate a delivery of treatment energy when the processing circuitry determines there is a fault condition. The method may generally include performing a series of pre-checks, synchronizing a treatment energy delivery to the proper segment of the heart's depolarization pattern, configuring the system for treatment energy delivery, delivering the treatment energy, and performing post-treatment evaluation.
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公开(公告)号：US20170035499A1
公开(公告)日：2017-02-09
申请号：US15228406
申请日：2016-08-04
Applicant: Medtronic, Inc.
Inventor： Mark T. STEWART , Steven J. FRAASCH
CPC classification number: A61B18/1492 , A61B18/1206 , A61B2018/00351 , A61B2018/00577 , A61B2018/00613 , A61B2018/0075 , A61B2018/00761 , A61B2018/00767 , A61B2018/00839 , A61B2018/126 , A61B2018/1407 , A61N1/327
Abstract: A method for ablating tissue by applying at least one pulse train of pulsed-field energy. The method includes delivering a pulse train of energy having a predetermined frequency to cardiac tissue, the pulse train including at least 60 pulses, an inter-phase delay between 0 μs and 5 μs, an inter-pulse delay of at least 5 μs, and a pulse width of 5 μs.
Abstract translation: 一种通过施加脉冲场能量的至少一个脉冲串来消融组织的方法。 该方法包括向心脏组织递送具有预定频率的脉冲序列，脉冲串包括至少60个脉冲，0μs和5μs之间的相间延迟，至少5μs的脉冲间延迟，以及 脉冲宽度为5μs。
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公开(公告)号：US20180221078A1
公开(公告)日：2018-08-09
申请号：US15427534
申请日：2017-02-08
Applicant: Medtronic, Inc.
Inventor： Brian T. HOWARD , Steven J. FRAASCH , Mark T. STEWART , John VANDANACKER
Abstract: A method of determining a pulsed field ablation waveform parameter for creating a desired lesion characteristic in cardiac tissue. The method of provides an electrosurgical generator configured to deliver electroporation pulses, the generator configured to: load predetermined waveform parameters (yi); load predetermined modeling data (xi); accept entry of a user inputted desired lesion characteristic (ui); and determine at least one corresponding pulsed field ablation waveform parameter based on (ui), (yi); and (xi).
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