Patent ID: 8753306

Claim:
A device for treating Barrett's esophagus, comprising: a shaft having a working end with a window portion for accepting mucosal tissue of a patient's esophagus, a suction lumen extending from a first proximal opening to the working end, and a guiding lumen extending from a second proximal opening to the working end, wherein the window portion includes a floor surface, oblique proximal and distal surfaces and side surfaces, a plurality of needles extending from or through the floor surface and a plurality of suction openings through the floor surface and connected to the suction lumen; a cutting mechanism passing through the shaft, the cutting mechanism including a cutting blade, a handle and a force transmitting portion, the force transmitting portion being movable through the shaft by operation of the handle, the cutting blade being movable through the window portion; a fluid injection system including a distal needle tip, a syringe, and a conduit connecting the syringe and the needle tip, wherein the syringe includes a barrel and plunger fitted into the barrel, wherein the syringe, conduit and needle tip are movable with respect to the shaft, so that movement of the syringe barrel distally pushes the needle tip along the shaft and through the window portion.