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This invention describes a force sensor designed for robotic surgical instruments. It consists of two tubes, one nested inside the other, with an elastic material filling the space between them. Strain gauges are attached to measure how the tubes deform under force, particularly when the inner tube has specific raised and depressed sections, allowing the robotic system to "feel" what it's doing.
Why it matters: Precision manufacturing techniques for complex geometries and miniature sensor integration for surgical tools have advanced significantly since 2020.
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