Percutaneous dilational medical insertion device

A percutaneous dilational medical insertion device comprising:

• a catheter having an inflatable balloon member disposed between a first catheter end and a second catheter end;
• a needle removeably disposed in the catheter having a tip that extends beyond the second catheter end;
• the second catheter end having a flexible end portion that curls into an essentially j-shape when the needle is removed from the catheter;
• and
• a tubular member disposed about the catheter between the first catheter end and the inflatable balloon member.

A percutaneous method for forming a passageway for insertion of a tubular member, comprising the steps of:

• percutaneously inserting a tip end of a needle removeably disposed in a catheter provided with a inflatable balloon member through a wall of an interior cavity and into the interior cavity;
• withdrawing the needle from the catheter leaving the catheter disposed in the interior cavity;
• advancing the catheter until the inflatable balloon member is received in the wall of the interior cavity;
• and
• dilating the inflatable balloon member to form a passageway in the wall of the interior cavity.