Object
Maitland's Heart Resuscitator
Distinct from Maitland's Lock-Cutting Sonic Device; this is a futuristic medical resuscitator designed to restore suspended animation via artificial heartbeat pulses, not for physical access.
6 appearances
Purpose
Restore humans from Sensorite-induced suspended animation by emitting artificial heartbeat pulses
Significance
Confirms crew survival, exposes Sensorite mental domination, pivots story from lifeless discovery to psychological threat, and traps Doctor's group aboard as TARDIS sabotage follows
Appearances in the Narrative
When this object appears and how it's used