Tumor ablation can be used to treat cancer by injecting a needle-like probe to the site of a tumor and using extreme heat to kill the cancerous tissue. While this extreme heat effectively destroys cancer it can also damage nearby healthy tissues and lead to complications. Current techniques to minimize heat spread, including carbon dioxide and saline, fall short as they do not maintain adequate contact throughout the procedure. Our research proposes a biocompatible foam from all FDA-approved materials to separate and protect healthy tissues and minimize complications. Evaluation of the rate of foam collapse, thermochromic tissue mimics, rheology, pendant-drop tensiometry, and in-vivo studies have been used to characterize properties of the foam. Through further experimentation, the project will improve cancer treatment and minimize patient risk.