An adjustable diameter catheter includes a wall extending in an axial direction surrounding a lumen of the catheter, the wall having at least one outer spring and at least one inner spring arranged coaxially to the outer spring. The at least one outer spring surrounds the at least one inner spring. The at least one inner and outer springs each have a distal end which are connected to one another. The at least one inner and outer springs each have a plurality of windings. A winding direction of the at least one outer spring is opposite to a winding direction of the at least one inner spring.
