Patent ID: 7988659

Claim:
An indwelling balloon catheter for an endoscope, comprising: a flexible tube including a first lumen and a second lumen, the first lumen and the second lumen being arranged in parallel with each other and extending in an axial direction of the flexible tube over an entire length thereof; and a connector separate from the flexible tube and provided with a first connecting pipe and a second connecting pipe which protrude from a body of the connector, protruded portions of the first connecting pipe and the second connecting pipe being configured to be removably inserted into the first lumen and the second lumen, respectively, wherein the protruded portion of the second connecting pipe is arranged obliquely with respect to the first connecting pipe such that a tip end of the protruded portion of the second connecting pipe is spaced farther from the first connecting pipe than an unprotruded portion of the second connecting pipe, the protruded portion of the second connecting pipe being configured to be elastically deformed to be parallel with the first connecting pipe, wherein a cross sectional shape of the first lumen is a non-circular shape, a cross sectional shape of the first connecting pipe corresponds to the cross sectional shape of the first lumen, wherein the cross sectional shapes of the first lumen and the first connecting pipe are larger than cross sectional shapes of the second lumen and the second connecting pipe, respectively, and wherein the first connecting pipe protrudes longer from the connector than the second connecting pipe such that the first connecting pipe is used as a guide to insert the second connecting pipe into the second lumen.