Gerberding, Brent C.,Utley, David S.,Wallace, Michael P.
申请号：
AU2008275316
公开号：
AU2008275316B2
申请日:
2008.07.03
申请国别(地区):
AU
年份:
2013
代理人:
摘要：
Devices and methods are provided for the ablation of regions of the digestivetract to achieve hemostasis and to eradicate chronically bleeding lesions asoccur with gastric antral vascular ectasia (GAVE), portal hypertensive gastropathy(PHG), radiation proctopathy and colopathy, arteriovenous malformations,and angiodysplasia. Ablation is typically provided in a wide-field manner,and in conjunction with sufficient pressure to achieve coaptive coagulation.Ablation, as provided the invention, starts at the mucosa and penetrates deeperinto the gastrointestinal wall in a controlled manner. Ablation control maybe exerted by way of electrode design and size, energy density, power density,number of applications, pattern of applications, and pressure. Control mayalso be provided by a fractional ablation that ablates some tissue within a targetregion and leaves a portion substantially unaffected. Embodiments of the deviceinclude an ablational electrode array that spans 360 degrees and an array thatspans an arc of less than 360 degrees.
