EXPLORATORY NEEDLE WITH ULTRASONIC CONDUCTING COAXIAL STYLET

摘要

Techniques for locating the tip of a hollow needle probe are disclosed. The needle (101) contains a conduit for conducting ultrasonic energy to energy receiving means outside the body. In one embodiment the conduit comprises a sonically conductive rod (102). When directional information is desired, a plurality of conduits may be used, or a single conduit including a plurality of detector transducers located near the needle tip. A system for irradiating the probe is shown and a method for use of the present invention is provided. The conduit may also be insulated from the needle by a packing of microspheres.