摘要:
A method and system for detecting the proximity of a nerve to a proximity electrode and status of nerve. The method of detecting the status of the nerve (30) includes the steps of placing an electrode near the nerve (32); providing an electrical signal having varying current levels to the electrode (34) to stimulate the nerve; measuring an EMG response of the nerve for the applied current (36); mapping the EMG responses (38) of the nerve for the applied electrical signal for a fixed latency; and determining the status of the nerve based on the mapping of the responses (42).
摘要:
An expandable tip cannula system, comprising: a hollow cannula shaft having a proximal end and a distal end; and an expandable tip mounted at the distal end of the hollow cannula shaft, the expandable tip comprising a plurality of generally-triangular shaped petals held together in a radially-inwardly tapered arrangement between adjacent petals, each petal comprising a nerve sensing electrode disposed therein.