Arrangement Of Multi-channel Bipolar Electrode Zones To Minimize Leakage And Edge Effects
A bipolar electrode and electrode area technology, which is applied in the parts of surgical instruments, medical science, surgery, etc., can solve the problems of current leakage, insufficient transmission, and insufficient ablation of target tissue.
Active Publication Date: 2016-07-20
COVIDIEN LP
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However, in certain circumstances, when a particular zone is activated, current may leak from that zone to one or more of the other zones of the ablation device.
Problems with current leakage can result in insufficient energy delivery to the desired area, which can result in insufficient ablation of the target tissue
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[0034]To treat certain conditions within a body lumen, such as the gastrointestinal tract, region-based ablation may be used to ablate specific segments of tissue. For various reasons, region-based ablation devices may be divided into a number of different regions or zones that may be selectively manipulated. One such reason for dividing a region-based ablation device into zones may be to maintain a high degree of control over the region of tissue being ablated at any given time during an ablation procedure. Another reason is that a typical power source may not be able to provide enough energy to the entire ablation structure at the same time. However, under certain circumstances, current from the active zone may leak or travel along alternate paths to one or more of the other zones of the ablation device. The problem of current leakage may be a result of the physical arrangement and proximity of the different zones relative to each other or the arrangement and number of elec...
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Methods, apparatuses, and systems are described for minimizing various leakage effects of multi-zone ablation devices. Apparatuses may include an ablation device for treatment of tissue including an ablation structure with a plurality of bipolar electrode zones. Each of the zones may include an in-zone channel pair comprising a positive channel and a negative channel. The ablation structure may be configured such that, for any adjacent electrode zone pair comprising a first electrode zone and a second electrode zone adjacent to the first electrode zone, the positive channel of the first electrode zone is electrically distinct from the positive channel of the second electrode zone, and the negative channel of the first electrode zone is electrically distinct from the negative channel of the second electrode zone. Moreover, the ablation structure may be arranged such that a total number of electrically distinct channels that is less than twice a total number of the plurality of electrode zones.
Description
Background technique [0001] The human body has several internal body lumens or cavities located in different parts such as the gastrointestinal tract, many of which have a lining wall or lining. Body lumens may include, for example, the esophagus, small and large intestines, stomach, post-bariatric surgery remnants, rectum, and anus. These lining walls may be susceptible to disease. In some cases, different ablation techniques may be utilized relative to the lining wall to prevent disease spread to otherwise healthy tissue located nearby. [0002] An ablation device may include a number of different regions or zones that may be selectively activated or deactivated during an ablation procedure. However, in certain circumstances, when a particular zone is activated, current may leak from that zone to one or more of the other zones of the ablation device. Problems with current leakage may result in insufficient energy delivery to the intended region, which may result in insuff...
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IPC IPC(8): A61B18/12A61B18/14
CPCA61B18/1492A61B2018/0016A61B2018/00214A61B2018/0022A61B2018/00577A61B2018/00654A61B2018/1465A61B2018/1467A61B18/00
Inventor A·D·詹姆森C·L·巴格利H·K·赫斯泽尔
Owner COVIDIEN LP