Balloon catheter for puncturing, medical tube introduction device using the catheter and method for use thereof

A method for use of a medical tube inserting device, comprising the steps of:

• providing a balloon catheter comprising a balloon and a catheter, wherein the balloon having a thickness of 0.01 to 1 mm, a tensile strength of 8 to 25 MPa, a tear strength of 20 to 60 kg/cm, a 100% modulus of 3 to 6 MPa, an elongation of 300 to 460% and a balloon internal pressure of 2.8 to 75 psi, enabling said balloon not to rupture immediately when needed;
• inserting said balloon catheter via a body orifice;
• positioning said balloon proximate to the puncture area;
• expanding the balloon by a fluid;
• aiming a puncturing needle at a catheter shaft while externally confirming position of the balloon and the catheter shaft using an ultrasonic probe;
• needling the balloon with the puncturing needle;
• inserting a guide wire into the balloon through the puncturing needle while confirming needling of said balloon by an outflow of the fluid in the balloon from an end of the puncturing needle;
• removing the puncturing need from the puncture area;
• extending the balloon further past the puncture area while retaining the guide wire in an intended area;
• expanding the puncture area with a dilator equipped with a sheath;
• removing the dilator while retaining the sheath within the puncture area;
• inserting an indwelling catheter via the guide wire;
• and,
• retaining the indwelling catheter via the sheath;
• thereby securing a route via the indwelling catheter for draining of digestive juices or for infusion of medical solutions.