US 2009/0023994 A1 · Endoscope Insertion Portion and Endoscope

Abstract

In order to realize an endoscope insertion portion and an endoscope system easily inserted into the body cavity such as a large intestine and is capable of improvement of invertibility into the body cavity without imposing pain on a patient, an endoscope insertion portion of the present invention includes an endoscope insertion portion capable of being inserted into a subject; a spiral tube as a propulsive force generation section mounted on the outer periphery side of the endoscope insertion portion and rotating around the longitudinal axis of the endoscope insertion portion; and a friction reduction spiral portion provided at a predetermined position on the outer periphery of a spiral-formed portion, for example, on the proximal end side, the friction reduction spiral portion being provided as a frictional force reduction member mounted on the spiral tube, reducing a frictional force generated between the spiral tube and a body-cavity inner wall.

Claims24

Dependent claims

An endoscope insertion portion comprising:

an insertion portion capable of being inserted into a subject;
a propulsive force generation section mounted on the outer periphery side of the insertion portion and rotating around the longitudinal axis of the insertion portion;
and frictional force reduction means mounted on the propulsive force generation section and reducing a frictional force generated between the propulsion force generation section and a body-cavity inner wall.

Dependencies are inferred from the claim text.

Endoscope Insertion Portion and Endoscope

Life of this patent

Endoscope Insertion Portion and Endoscope

Life of this patent

Abstract

Claims24