The therapeutic devices application niche, often omitted in Alzheimer segmentation models, generates US>350 million by addressing behavioral and cognitive symptoms resistant to pharmacology. Electro-stimulation implants—vagus-nerve and deep-brain—yield the highest per-patient revenue (>US>25,000) yet serve <10,000 severe patients worldwide, capping share at 34%. Cranial optical stimulation systems, cleared for home use, sell for US>2,000 per unit and scale through neurology clinics, now representing 26% of device revenue with a 14% CAGR. Wearable cognitive aids (AR reminders, GPS trackers) commoditize quickly but expand volume; average selling prices have fallen below US>200, so dollar share is modest (18%) despite unit leadership. Finally, robotic companions—social robots priced at US>4,000—target agitation and loneliness in long-term care, a segment growing 20% as facilities seek non-pharmacologic interventions. Collectively, therapeutic devices illustrate how non-pharmacologic Alzheimer segmentation can still command premium pricing when outcomes reduce caregiver burden and institutional costs.