Splittable multiple catheter assembly

A compound catheter assembly object is offered. This assembly object contains the first catheter that has the outside surface which appoints first at least one lumen prolonged in the direction of order through between the first hand end domain, the first distal region that carries out a terminal point with the first end chip, and the first end and the first hand end opening. This assembly object also contains the second catheter that has the outside surface which appoints second at least one lumen prolonged in the direction of order again through between the second hand end domain, the second distal region that carries out a terminal point with the second end chip, and the second end and the second hand end opening. The first lumen and second lumen have been independent mutually in order to make the simultaneous flow to a counter direction easy. Outside the first and the second catheter, the surface is connected so that secession is possible, so that the first and second end chip, first, and second hand end domains may be enabled to split in the direction of order partially mutual at least. The method of inserting this compound catheter assembly object is also offered.