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An implantable,wireless,battery-free system for tactile pressure sensing
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作者 Lin Du Han Hao +7 位作者 Yixiao Ding Andrew Gabros thomas c.e.mier Jan Van der Spiegel Timothy H.Lucas Firooz Aflatouni Andrew G.Richardson Mark G.Allen 《Microsystems & Nanoengineering》 SCIE EI CSCD 2023年第5期309-320,共12页
The sense of touch is critical to dexterous use of the hands and thus an essential component of efforts to restore hand function after amputation or paralysis.Prosthetic systems have addressed this goal with wearable ... The sense of touch is critical to dexterous use of the hands and thus an essential component of efforts to restore hand function after amputation or paralysis.Prosthetic systems have addressed this goal with wearable tactile sensors.However,such wearable sensors are suboptimal for neuroprosthetic systems designed to reanimate a patient’s own paralyzed hand.Here,we developed an implantable tactile sensing system intended for subdermal placement.The system is composed of a microfabricated capacitive pressure sensor,a custom integrated circuit supporting wireless powering and data transmission,and a laser-fused hermetic silica package.The miniature device was validated through simulations,benchtop assessment,and testing in a primate hand.The sensor implanted in the fingertip accurately measured applied skin forces with a resolution of 4.3 mN.The output from this novel sensor could be encoded in the brain with microstimulation to provide tactile feedback.More broadly,the materials,system design,and fabrication approach establish new foundational capabilities for various applications of implantable sensing systems. 展开更多
关键词 SYSTEM BATTERY FUSED
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