Living tissue harvesting apparatus

Abstract

There is disclosed a living tissue harvesting apparatus according to one aspect of the present invention, comprising a sheath which can be inserted in a body through a cut skin portion, an endoscope inserted through the sheath, a cutting device which is disposed at the sheath and which can cut a living tissue, and a holder which is disposed at the sheath to hold a harvesting object tissue in the body and which includes a press discharge portion to press-discharge the harvesting object tissue in a direction detached from the cutting device, wherein the holder includes a hook portion to catch the living tissue in a position disposed opposite to the cutting device, and the cutting device and hook portion can move with respect to each other.

1 . A living tissue harvesting apparatus comprising: 
 a sheath including distal and proximal end portions, and a longitudinal axis, the sheath having an endoscope channel, a treatment device channel and a cutout portion for engaging with the endoscope inserted in the endoscope channel so as to prevent the endocsope from moving in the longitudinal direction.    
     
     
         2 . The living tissue harvesting apparatus according to  claim 1 , wherein the cutout portion engages with a light guide head of the endoscope.  
     
     
         3 . The living tissue harvesting apparatus according to  claim 1 , wherein the sheath includes an operation portion cover in which the cutout portion is formed, and a sheath main unit including respective distal and proximal end portions, and a respective longitudinal axis, the sheath main unit being connected to the operation portion cover so as to be rotatable about the longitudinal axis of the sheath main unit.  
     
     
         4 . The living tissue harvesting apparatus according to  claim 1 , wherein the sheath includes an operation portion cover in which the cutout portion is formed, and a sheath main unit including respective distal and proximal end portions, and a respective longitudinal axis, the sheath main unit being connected to the operation portion cover so as to be rotatable about the longitudinal axis of the sheath main unit, against the endoscope engaged with the cutout portion and the operation portion cover.  
     
     
         5 . The living tissue harvesting apparatus according to  claim 1 , wherein the cutout portion engages with the endoscope so that a forward end of the endoscope is positioned at a location extended from a forward end of the sheath.  
     
     
         6 . The living tissue harvesting apparatus according to  claim 1 , which further comprises a cutting device positioned in the treatment device channel so as to be slidable along the longitudinal axis, and in which the cutout portion engages the endoscope to the sheath, so that a forward end portion of the cutting device is positioned in a location outside a view field of the endoscope inserted in the endoscope channel in a position on a most distal end side.