Sphincter treatment apparatus

摘要

An apparatus treats tissue at or near a sphincter. The apparatus has an elongated member having at least one lumen including an inflation lumen, and a basket assembly including a first and a second arm. An inflatable member is coupled to the inflation lumen and has a deployed and a non-deployed state. In the deployed state, the inflatable member expands the basket assembly into contact with tissue. At least one of the first and second arms of the basket assembly has a fluid lumen having an aperture for conveying a fluid from the basket assembly. A source of fluid is coupled to the fluid lumen for conveyance of fluid through the aperture. The fluid can be, e.g., an electrolytic solution, and/or an anti-infection agent, and/or an echogenic media, and/or a steroid, and/or an anesthetic, and/or a medicament, and/or a tissue cooling agent. The source can be a drug delivery device.

主权项

1. An apparatus for treating gastroesophageal reflux disease by treating tissue at or near a lower esophageal sphincter, the apparatus comprising a shaft having at least one lumen and an expandable device coupled to the elongated member, the expandable device including a basket assembly having first and second arms, the first arm having a first lumen and a second lumen, the first lumen configured to convey a fluid therethrough, and a first electrode movable within the second lumen of the first arm from a retracted position to an extended position extending radially outwardly from the arm, the first electrode is adapted to apply electrosurgical energy to the tissue to tighten the sphincter to treat gastroesophageal reflux disease by reducing frequency of reflux of stomach contents into an esophagus, and a temperature sensor, the electrode couplable to an energy delivery device and the apparatus is couplable to a feedback system which couples the temperature sensor to the energy delivery device to control temperature of the tissue.