05829444 is referenced by 286 patents and cites 101 patents.

A system is disclosed for monitoring the position of a medical instrument with respect to a patient's body and for displaying at least one of a plurality of prerecorded images of said body responsive to the position of said medical instrument. In one embodiment the system includes a reference unit secured from movement with respect to the patient's body such that said reference unit is substantially immobile with respect to a target operation site. The system also includes a remote unit for attachment to the medical instrument. A field generator may be associated with one of the units for generating a position characteristic field in an area including the target operation site. One or more field sensors may be associated with either of the units responsive to the presence of the position characteristic field for producing one or more sensor output signals representative of said sensed field. A position detector in communication with the sensor output signal produces position data representative of the position of the remote unit with respect to the reference unit. An output display in communication with the position detector displays at least one of the prerecorded images responsive to the position data.

Title
Position tracking and imaging system for use in medical applications
Application Number
8/306818
Publication Number
5829444
Application Date
September 15, 1994
Publication Date
November 3, 1998
Inventor
James S Tieman
Watertown
MA, US
Peter D Jakab
Sharon
MA, US
Maurice R Ferre
Boston
MA, US
Agent
Samuels Gauthier Stevens & Reppert
Assignee
Visualization Technology
MA, US
IPC
A61B 19/00
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