Patent ID: 7654951
Filing Date: 2010-02-02
Classification: A61B

Abstract:
1. A guide system comprising: a tubular main body including a distal end portion which is inserted through at least one of a mouth and an anus to a target portion in the living body, a proximal end portion arranged on the outside of the living body and a through hole extending from the distal end portion to the proximal end portion; a distal end surface which is formed in the distal end portion of the tubular main body and in which an end of the through hole is open; and a side hole, which is formed in a position near the distal end portion of the tubular main body and adjacent to the through hole in a radial direction; an operative instrument movably disposed in the through hole from the proximal end portion to project a distal end portion thereof out of the distal end surface; and an endoscope having an imaging means positioned at a distal end portion, the endoscope being movably disposed in the through hole, the distal end portion being disposed in the side hole such that the imaging means is configured to observe the distal end portion of the operative instrument; wherein the tubular main body has a first area, which contains a plurality of lumens extending along an axial direction between the distal end portion and the proximal end portion and which allows passage of the operative instrument, a second area, which communicates with the plurality of lumens and contains a common lumen that opens outside at the distal end portion, and a storage space formed in the second area and having a capacity of storing the distal end of the operative instrument, and the distal end of the operative instrument having a diameter greater than that of the plurality of lumens is stored in the storage space.