Tomohide Akiyama

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A wound speculum, or an operator-controlled wound retractor, was devised to facilitate surgery in a narrow and deep field. It is specifically designed to make hemostasis and suturing easy as well as accurate. The blades of the speculum are teflon-coated for electrical insulation on electrocoagulation, and made in the shape of a frame with a narrow opening(More)
A perforated metal plate, working as a two-dimensional metamaterial to support surface wave propagation, plays a role of an imaging head of permittivity mapping at millimeter-wave ranges. One noninvasive metallic probe is swept two-dimensionally along the metamaterial surface to induce near field to detect the corresponding local permittivity. This(More)
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