A resector balloon system is disclosed generally comprising a catheter with at least one balloon having an outer wall with a resecting non slip surface for resecting unwanted biological material such as tissues or tumors and a pump that supplies fluid thereto in pulsed fashion to repeatedly deflate and inflate said balloon. In certain embodiments the pump includes a processor that controls the pulsed supply of fluid based on an established frequency or change in volume. In some embodiments the system includes a keyed connector with which the pump identifies the balloon type and in some cases the system calculates intra lumen diameters and densities. In some embodiments the balloon portion of the catheter includes multiple balloon segments which in some cases are inflatable separately from one another.
