STEM与日常科技·英语30篇（2）

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3D打印为儿童与成人定制假肢手

Traditional prosthetic hands cost thousands of dollars and take months to fabricate in specialized labs.
3D printing lets clinics produce lightweight, colorful, and fully functional hands in under a week.
Designs are customized using scans or measurements, so each hand fits the user’s unique anatomy.
Many open-source models are freely downloadable and adjustable for growth—ideal for children who outgrow limbs quickly.
Tendon-driven mechanisms use flexible filaments to mimic finger bending without expensive motors.
Therapists collaborate with engineers to refine grip strength and range of motion for daily tasks.
Some schools run prosthetic clubs where students print and assemble hands for local patients.
Though not yet strong enough for heavy labor, these hands restore independence in school and play.
New biocompatible materials also allow direct skin contact without irritation over time.
This blend of compassion, computation, and craftsmanship shows how tech serves human dignity.