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01 · SUBSECTIONPrehensile Hand System

Anatomy

Four long fingers and an opposable thumb — chimpanzee precision-grip pattern.

Cutaway of the wrist and base of the hand, grey dermal flap peeled back to reveal a machined aluminium phalanx, braided carbon-fibre tendons in PTFE sheaths, red striated muscle interface tissue, and a forearm-mounted brushless micro-actuator. Leader lines on the right identify five components.

Four long fingers and a shorter opposable thumb — the chimpanzee precision-grip pattern. Phalanges are machined aluminium with carbon-fibre tendons routed through PTFE sheaths to the forearm, where 22 brushless micro-actuators sit out of the way of the impact envelope.

SPSpecifications
Phalanges
Machined aluminium
Tendons
Carbon-fibre in PTFE sheaths
Actuators
22 brushless micro, forearm-mounted