Abstract: An insertion assisting tool for an endoscope which is a tubular insertion assisting tool which is provided with an inflatable and deflatable balloon attached to a tip end outer peripheral part, and through which an insertion section for an endoscope is capable of being inserted, comprising: an air hole formed at an outer periphery and/or a tip end part of the insertion assisting tool.

Abstract: An endoscope device comprises: an endoscope including an insertion portion and a first balloon attached to a distal end of the insertion portion; and an insertion guide that is to be covered on the insertion portion to guide insertion of the insertion portion, the insertion guide comprising a second balloon on its distal end, wherein the insertion portion or the insertion guide is fixed in a body cavity by expanding the first balloon or the second balloon, respectively, wherein the first balloon and the second balloon are substantially equal to each other in friction resistance against the body cavity when they are expanded.

Abstract: A hand operation portion of an endoscope is held by an endoscope holder of a holding device, and an insertion auxiliary member is held by an auxiliary member holder. The endoscope holder and the auxiliary member holder are slidably supported along a guide rail on a stage, and linearly moved toward a mouth of a patient.

Abstract: In an endoscope apparatus of the present invention, an one-side gap between a tube main body of an overtube and an insertion portion is set at 0.5 mm to 1.5 mm. Lubricity is improved because a lubricating liquid such as water supplied from the injection port to the base end side of the tube main body is sufficiently supplied to the whole area of the gap between the tube main body and the insertion portion by setting the one-side gap at not less than 0.5 mm. Also, the snaking of the insertion portion with respect to the tube main body can be held to a minimum by setting the one-side gap at not more than 1.5 mm. As a result of this, the insertion and extraction operability of the insertion portion with respect to the overtube is improved.

Abstract: An endoscope device comprises: an endoscope including an insertion portion and a first balloon attached to a distal end of the insertion portion; and an insertion guide that is to be covered on the insertion portion to guide insertion of the insertion portion, the insertion guide comprising a second balloon on its distal end, wherein the insertion portion or the insertion guide is fixed in a body cavity by expanding the first balloon or the second balloon, respectively, wherein the first balloon and the second balloon are substantially equal to each other in friction resistance against the body cavity when they are expanded.

Abstract: A hand operation portion of an endoscope is held by an endoscope holder of a holding device, and an insertion auxiliary member is held by an auxiliary member holder. The endoscope holder and the auxiliary member holder are slidably supported along a guide rail on a stage, and linearly moved toward a mouth of a patient.

Abstract: In an endoscope apparatus of the present invention, an one-side gap between a tube main body of an overtube and an insertion portion is set at 0.5 mm to 1.5 mm. Lubricity is improved because a lubricating liquid such as water supplied from the injection port to the base end side of the tube main body is sufficiently supplied to the whole area of the gap between the tube main body and the insertion portion by setting the one-side gap at not less than 0.5 mm. Also, the snaking of the insertion portion with respect to the tube main body can be held to a minimum by setting the one-side gap at not more than 1.5 mm. As a result of this, the insertion and extraction operability of the insertion portion with respect to the overtube is improved.

Abstract: An insertion assisting tool for an endoscope which is a tubular insertion assisting tool which is provided with an inflatable and deflatable balloon attached to a tip end outer peripheral part, and through which an insertion section for an endoscope is capable of being inserted, comprising: an air hole formed at an outer periphery and/or a tip end part of the insertion assisting tool.