A DEVICE

摘要

A guide device for assisting advancement of a probe though a passageway, such as the colon, by maintaining the probe spaced from the interior walls of the passageway during advancement. The guide (1) comprises an evertable tube (3) having longitudinally extending outer and inner walls (2, 4) which are connected at each end to define an enclosed inflation space (5) therebetween. The inner walls (4) define a lumen (8) and the tube is inflatable to grip a probe (7) in the lumen such that the tube is evertable with advancement of a probe (7). A skeletal member (6) extends longitudinally in the inflation space. In particular this invention relates to a guide device which facilitates enhanced vision during probe advancement, especially in a tortuous passageway such as the colon.