Articulate Labs - Turn Everyday Movement Into Physical Therapy

Most muscle-stim gadgets work best when you do nothing. Articulate Labs built the opposite: a wearable that fires your muscles in sync with how you move, turning a walk or a grocery run into real strength training. Co-founder and CEO Josh Rabinowitz and hardware lead Herbie (Larry) Kirn join DeAndre and Grant on The Hardtech Podcast for one of our most technical episodes yet: the science of recovering properly after a knee injury, the honest reality of funding and selling a medical device, and a real engineering deep dive into the hardware that makes it work. Expect IMUs and load models, high-frequency stimulation that bypasses motor points, a real-time data-flow OS hitting 50-microsecond latency, and the surprising fact that muscles are "louder" than they are electric. What we get into: What Articulate Labs builds, and why movement-synchronous stimulation beats passive stim The science of recovering properly: mistiming, the medial muscle, and the knee in 3D The go-to-market reality: hospitals, the military, DME, and remote-PT players The honest fundraising conversation, and reframing a raise as an exchange A hardware deep dive: IMUs, high-frequency stim, impedance, and a 50-microsecond real-time OS EMG vs acoustic: how the sound of a muscle reveals fatigue and force Chapters 0:00 Welcome & intro 0:36 Meet Josh & Herbie of Articulate Labs 0:55 The pitch: turning everyday activity into physical therapy 1:49 Why "synchronous" stimulation matters (not an as-seen-on-TV gadget) 4:08 Recovering properly, not just quickly 5:08 The science: mistiming, the medial muscle & the knee in 3D 6:41 The go-to-market journey: finding your champion 7:23 The military demand signal that didn't scale 9:04 Back to pre/post knee-replacement care 9:54 Reimbursement, DME & a federal moratorium 10:46 Lessons from Sword Health & Hinge Health 12:34 The fundraising journey & the guilt nobody talks about 13:08 Funding from grants, awards & accelerators 15:01 Reframing the raise: an exchange, not a handout 17:36 The $1.3M MTEC award and creating real value 20:27 Why hardware needs more capital (and nearly bootstrapping it) 21:04 Deep dive: two IMUs and a load model in the knee 22:23 Training the device with the clinician's button 23:01 High-frequency stim that doesn't rely on motor points 24:36 Why long-distance runners are hard to stimulate 26:18 Tissue isn't uniform: impedance, capacitance & salty humans 28:07 From manual-transmission cars to adaptive code 30:22 A real-time OS with guardrails for inexperienced coders 32:50 EMG vs acoustic: why muscles are "louder" than they are electric 36:30 Data-flow over control-flow, and 50-microsecond latency 37:11 The "magic carpet" moment & adapting to how people really walk 39:18 The future of med device: diagnose, treat, then monitor 41:10 Movement as medicine: the health-economic case 44:10 Where to follow Articulate Labs 46:05 Wrap-up & thanks Featuring DeAndre Harakas & Grant Chapman (Glassboard) with Josh Rabinowitz and Herbie (Larry) Kirn (Articulate Labs). Glassboard is a hardware product development company. Subscribe for more conversations with the people building hard tech. #HardTech #MedTech #Wearables #MedicalDevices #Biomechanics #Electrostimulation #KneeRehab #Hardware #Startups #Engineering