Patent ID: 7963929

Claim:
A catheter for measuring a size of a gastric pouch, comprising: an outer elongate tube having a proximal end and a distal end; an inner elongate tube having a proximal end and a distal end, the inner elongate tube positioned at least partially within the outer elongate tube such that the inner elongate tube is capable of sliding within the outer elongate tube; a proximal balloon surrounding at least a portion of the outer elongate tube near the distal end of the outer elongate tube, the proximal balloon having a first end attached to the outer elongate tube and a second end attached to the outer elongate tube; a distal balloon surrounding a portion of the outer elongate tube distal to the proximal balloon, the distal balloon having a first end attached to the outer elongate tube and a second end attached to the inner elongate tube; at least two excitation electrodes attached to the portion of the outer elongate tube surrounded by the distal balloon, the at least two excitation electrodes capable of attachment to a power source; at least two detection electrodes attached to the outer elongate tube positioned relative to the at least two excitation electrodes, the at least two detection electrodes capable of attachment to a processor; a first pressure transducer attached to the portion of the outer elongate tube surrounded by the proximal balloon; and a second pressure transducer attached to the portion of the outer elongate tube surrounded by the distal balloon.