Wireless intracranial (ICP) pressure monitor comprises wireless transceiver 100, e.g. an RF coil, and catheter 304, which may be titanium alloy with an outer diameter of 2mm and may be slightly deformable. Pressure sensor 305 might be a semiconductor strain gauge positioned as shown (fig. 3D, 305) for detecting radial and circumferential deformation of the catheter. Alternatively, the pressure sensor (307 of fig. 4D) may detect pressure-induced distortion of a diaphragm (fig. 4D, 309). In either case, an in-catheter wire (306, figs 3C & 4D) connects the pressure transducer to a processing module 200 and may include a vent hole (3061, fig. 4D) so that pressure at one side of the possible diaphragm remains at atmospheric. The other side may be protected by a film (308, fig. 4D). The wireless detector allows monitoring of intracranial pressure while lacking complex configuration which might physically interfere with operation and movement of surgeons.
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