Donated, Broken, Unrepairable

Approximately 40% of medical diagnostic equipment in developing countries is out of service at any given time, compared to less than 1% in high-income countries. Equipment is typically donated or procured without maintenance contracts, spare parts supply chains, or consideration of local repair infrastructure. When devices fail — often due to power surges, dust, humidity, or consumable stockouts — there are no local technicians trained to repair them and no access to proprietary diagnostic software or replacement components. The result is a vast graveyard of non-functional equipment that was designed for the infrastructure and maintenance ecosystems of wealthy countries.

An estimated 47% of the global population — 3.6 billion people — has little to no access to diagnostics. Diagnostics are the gateway to treatment: without diagnosis, conditions like tuberculosis, malaria, and cervical cancer go untreated even when therapeutics are available. The Lancet Commission identified nine interlocking market failures preventing diagnostic access, but the equipment repairability problem is the most tractable design challenge among them. Every year, millions of dollars of donated equipment becomes non-functional within 2–5 years of deployment, wasting resources and eroding trust in health systems.

WHO and UNICEF have published Target Product Profiles specifying performance requirements for LMIC-destined devices, but these specifications rarely address repairability, modularity, or spare parts availability as primary design criteria. The "design for low resource" movement has produced simpler devices (e.g., GeneXpert for TB), but these still rely on proprietary cartridges and manufacturer-controlled service. Biomedical equipment technician (BMET) training programs exist in some countries but face 30–60% attrition rates because trained technicians cannot access manufacturer repair manuals, diagnostic codes, or replacement parts. The "right to repair" movement has gained legal traction for consumer electronics in the EU and US but has not been extended to medical devices, where manufacturer service monopolies are more entrenched.

Devices designed from the outset with modular, field-replaceable components, open-source diagnostic firmware, and locally manufacturable spare parts would dramatically extend equipment lifespan in LMIC settings. Design-for-repair standards — analogous to IP-rated environmental protection ratings — could create a measurable repairability index for medical equipment procurement decisions. Even simple interventions (standardized power supplies across device families, common fasteners, QR-code-linked repair guides) could reduce the non-functional rate significantly.

A student team could conduct a teardown analysis of 2–3 commonly donated diagnostic devices (e.g., portable ultrasound, hematology analyzer, pulse oximeter), document failure modes from published BMET repair logs, identify which components fail most frequently, and redesign those components for field replaceability using locally available materials and tools. Alternatively, teams could develop a "repairability scorecard" for medical equipment, analogous to iFixit's repairability scoring, and apply it to WHO Essential Diagnostics List devices. Relevant disciplines: product design, biomedical engineering, mechanical engineering, global health.