US Patent 11253677 Navigable suction instrument with coaxial annular sensor

An apparatus includes a cannula assembly and a sensor assembly. The cannula assembly includes a proximal end, a distal end, and a first lumen extending from the proximal end to the distal end. The cannula is formed of a rigid material. The sensor assembly includes a sensor and a communication wire. The sensor is fixed to the cannula assembly. The communication wire is in electrical communication with the sensor. The communication wire extends along a length of the cannula assembly exterior to the first lumen.