Good Interfaces

ErgoLite

The surgical headlamp that knows where the surgeon is looking — a two-minute read.

Panel 1 of 7. An operating room. Dr. Reyes leans over the table, her headlamp casting a bright amber cone onto the patient while two colleagues assist. Captions: Dr. Reyes is one of the best surgeons in the state. Her headlamp is brilliant. That's exactly the problem.
Panel 2 of 7. Close-up of Dr. Reyes looking down, lamp blazing on her forehead, sweat on her brow, jaw clenched. Caption: The light only works when she looks down. Panel 3 of 7. She glances up and the beam hits the assisting surgeon's face; they wince and shield their eyes. Caption: Because when she looks up… 100,000+ lux.
Panel 4 of 7. Side view of Dr. Reyes with head bowed deep, chin near chest, red stress lines radiating from her neck; an X-ray inset shows compressed cervical vertebrae glowing red. Captions: So she never looks up. Not to stretch. Not to check the monitor. Not to talk to her team. For hours. Cited beneath: 87% of surgeons report work-related musculoskeletal pain. Only 3% operate pain-free. — Wells et al., Surgical Endoscopy, 2019. Panel 5 of 7, purple-bordered. A different day: Dr. Reyes wears a sleeker headlamp with a purple accent, head tilted up toward a colleague, the lamp giving only a faint glow. Nobody is blinded. Caption: Then she got the headlamp that thinks.
Panel 6 of 7. She looks back down and the lamp blazes at full output; a purple arc traces the free sweep of her head movement. Captions: It dims when she looks up. It blazes when she looks down. And it knows the difference between a glance and a turn. Panel 7 of 7. Dr. Reyes stands upright in a relaxed posture, making eye contact with her colleague, the lamp glowing softly. Captions: ErgoLite. The headlamp that thinks. U.S. Patent 11,229,096 · Good Interfaces, Inc. · goodinterfaces.com

The evidence

The evidence

87%

87% of surgeons report work-related musculoskeletal pain. Only 3% operate pain-free.

— Wells et al., Surgical Endoscopy, 2019 (survey of 556 surgeons)

49%

49% fear their pain will end their ability to operate. Those surgeons report significantly higher burnout (p=0.005).

— Wells et al., Surgical Endoscopy, 2019

~40%

Loupes and headlamps increase cervical spine loading by roughly 40%.

— Nimbarte et al., IISE Transactions on Occupational Ergonomics and Human Factors, 2013

10%

Nearly 10% of cervical injuries in surgeons end careers outright.

— Sivak-Callcott, Mancinelli & Nimbarte, Current Opinion in Ophthalmology, 2015

68%

68% of frequent surgical headgear users report worsening neck symptoms since residency, versus 38% of infrequent users. 34% are diagnosed with degenerative cervical disorder.

— Sahni et al., Journal of Spine, 2015

The technology

The technology

  • U.S. Patent 11,229,096

    “Smart headlamp system.” Issued January 18, 2022. Automatic light modulation based on head orientation, using inertial measurement and Hall-effect angle sensing.

The lamp dims when the surgeon lifts their head and returns to full output on the surgical field. Hysteresis in the threshold logic distinguishes a deliberate turn from an incidental glance — no flicker, no hunting at the boundary.

  • Integrates with standard ICs from multiple vendors.
  • 20–30mm² PCBA footprint.
  • No industrial redesign required.
  • Class I medical device under 21 CFR 886.4335 — exempt from 510(k) premarket notification.

The ask

Fifteen minutes. Bring your optics lead.

Integration economics and the revenue model are shared directly — not on a public page.