Apparatus and methods are provided for performing mucosectomy, such as to map out gastrointestinal surgery, including endoluminal gastric reduction. In one variation, the apparatus comprises a separating element and an integrated resection element. In one variation, the apparatus is configured to simultaneously separate mucosal tissue from underlying muscularis tissue and to resect the separated mucosal tissue. Methods of using the apparatus are provided.

 
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> Apparatus and methods for mapping out endoluminal gastrointestinal surgery

> Methods and apparatus for treatment of obesity with an ultrasound device movable in two or three axes

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