Guidewire procedure for peripheral artery disease treatment is heavily dependent on the surgeon's skills and experiences. In order to reduce such dependency, sensor-enhanced forward sensing guidewire is proposed. In this paper, we proposed a silicon cap structure that increases the robustness and efficient force transfer of the existing sensor-enhanced forward sensing guidewire. Silicon cap structure of 0.32×0.32×0.40mm has been fabricated using two masks process. Assembly of silicon structure with sensor having a 30μm overloading protection limit and resistance changes of 25kΩ with applied force ranging from 0～40mN has been demonstrated.
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