A minimally invasive surgical assembly broadly includes an outer hollow needle which has an outer diameter of approximately 2 mm or smaller, and a coaxial surgical instrument having a shaft which extends through the outer hollow needle. The scintillation camera can include two dual scintillation detector heads, which are fixed in opposition to each other. The processor is further configured for using the data such that the system can subscribe to at least a subset of the plurality of multicast video streams before the requested handoff is complete. Radical former molecules are applied on the surface of superabsorbent polymer particles. The metal sheet preferably comprises an aluminum alloy and the polymer coating preferably comprises maleic anhydride modified polyropylene.