Method of welding a balloon to a tube, and device obtained thereby

Abstract

A method of welding a balloon (10) to a tube (20), where the tube (20) has at least one coating layer (24) of a first material and at least one lumen (22) in flow communication with the outside of the tube (20) through at least one lateral opening (23), and where the balloon (10) has two opposite end portions (11) open at respective ends (12) and is made of a second material suitable for fusion with the first material of the coating layer (24) of the tube (20). The method comprises the steps of: - fitting the balloon (10) onto the tube (20) in correspondence with the at least one lateral opening (23); - applying to each end portion (11) of the balloon (10) a respective heat-shrink element (30) of a third material suitable for fusion with at least the second material; - supplying each heat-shrink element (30) with a quantity of heat (Q) such as to cause to shrink and compress the respective end portion (11) of the balloon (10) against the tube (20), such quantity of heat (Q) being transmitted at least partially to the end portion (11) and to the coating layer (24), obtaining the mutual welding of the balloon (10), the tube (20) and the heat-shrink element (30).

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