Method of making multilumen balloon catheter

摘要: A multilumen tube is extruded from a thermoplastic material having memory characteristic. An end portion of the heated sufficiently to soften plastic and permit be drawn out reduced diameter. pair metal ferrules placed on in predetermined positions spaced short distance apart. Then relaxed condition causing it reexpand lock place. Balloon inflation openings are formed communicating with one lumens. sleeve balloon secured by bindings over ferrules. In embodiment limp utilized as sail flow carry catheter through vein into heart pulmonary artery.