A nostalgic and highly collectible piece of electrophysiology history, this Bloom Stimulator system represents a transformative era in cardiac research and clinical training.

In the early 20th century, as the limitations of earlier devices like the Grass Stimulator became clear, Murray Bloom - working in E. Neil Moore's laboratory at the University of Pennsylvania - developed a far more versatile stimulator. His innovation enabled the delivery of precise pacing protocols to assess arrhythmia vulnerability and refractory periods, helping to shape modern EP diagnostics and research.

This original prototype design evolved into a widely adopted clinical tool, becoming a cornerstone in electrophysiology labs for decades. Many clinicians will fondly remember learning to operate the Bloom during fellowship - making this not just a scientific instrument, but a shared rite of passage in the EP community.

Offered here is a duplicate pair from the Heart Rhythm Society's collection, representing both the technical advancement and the educational legacy of this iconic device.

A meaningful addition to any lab, office, or personal collection, this set bridges generations of electrophysiologists and celebrates the field's rapid evolution.