Endoscopic mucosal resection device with overtube and method of use
AssigneeEthicon Endo-Surgery, Inc.
InventorsRudolph Nobis, Michael Clem, Christopher J. Hess
Life of this patent
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Abstract
A medical apparatus and method useful for resecting tissue from the gastrointestinal tract are disclosed. The apparatus can include an RF tissue cutting device disposed inward of a side opening in the device. A tissue stop can be used to control the depth of tissue resected, and the tissue stop can include holes for communicating vacuum for drawing tissue into the side opening. The tissue stop can be electrically grounded with respect to the RF tissue cutting device, and the tissue stop can provide one pole of an RF electrical circuit.
Claims13
A medical apparatus comprising:
- an overtube for receiving an endoscope therein, the overtube comprising a side opening for receiving tissue therethrough;
- and
- a tissue sample device disposed in the overtube, the tissue sample device comprising a tissue cutter adapted to traverse a length of the side opening for severing a tissue sample from tissue extending into the side opening;
- and
- a deformable tissue stop disposed inwardly of the side opening.
A medical apparatus comprising:
- a body with an outer surface having a side opening, the side opening for receiving tissue therethrough, a distal end opening, and a passageway for receiving an endoscope;
- a cutter for cutting tissue, the cutter adapted to traverse a length of the side opening for cutting tissue extending through the side opening;
- and
- a deformable tissue stop disposed inwardly of the side opening.
A method for obtaining a tissue sample, the method comprising:
- providing an endoscope;
- providing an overtube having a side opening and a tissue cutter;
- inserting the overtube into a patient's body with the endoscope;
- receiving tissue into the side opening of the overtube;
- and
- cutting tissue encoding into the side opening wit the tissue cutter;
- wherein the overtube is rotatable with respect to the endoscope wherein at least a portion of the overtube associated with the side opening has a non circular cross section.
Dependencies are inferred from the claim text.