Catheters can contain tools to vaporize or "ablate" bits of heart tissue that cause abnormal signals that control the heartbeat.

NPR: Heart Repair Breakthroughs Replace Surgeon's Knife

Radiation can ablate necessary cells, leading to organ failure.

FORBES: Japan Radiation Fears May Outstrip The Real Health Dangers

These use an electric current to heat and ablate a material, producing a charged gas that can then be accelerated in one direction in a magnetic field to push the cubesat in the other direction.

BBC: Strand-1 'phone-sat' ready for orbit