Patent ID: 7488292

Claim:
A blood-vessel detection device for detecting the presence or absence of blood vessels underneath the tissue surface, the blood-vessel detection device comprising: a partially-deforming device having a cylindrical shape or a rod shape which is disposed or disposable onto the tip of an endoscope insertable into the body cavity so as to be in contact with the tissue surface in order to deform a part of the tissue surface, thereby generating turbulence in blood passing through blood vessels extending underneath the tissue surface; a converting device for converting turbulent sound due to the turbulence generated in a part of the tissue surface deformed by the partially-deforming device into electric signals; and a signal processing device for performing signal processing including at least amplification for the electric signals, wherein the partially-deforming device includes one of a resecting device for resecting the tissue which is to be resected, a binding device for binding a part of the tissue using a rope, and a suctioning device formed of a generally cylindrical cup.