Guiding tube for medical instruments.

摘要

A tube (11) for guiding a rod-like medical instrument into a living body, which comprises a tubular body made of a synthetic resin and having a longitudinal hollow portion to permit the passage of the rod-like medical instrument. The whole of the tubular body is formed to have a chemical uniformity, but at least one brittle portion (12a, 12b) such as a weld line is longitudinally formed over the entire length (or almost the entire length except tip portion) of the tubular body. A method and an apparatus for molding such a tube provided with the brittle portion are also proposed.