초록 ▼

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 s

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.

대표청구항 ▼

1. A system for monitoring a position of a medical instrument with respect to a patient's body and for displaying images of the patient's body responsive to the position of the medical instrument, said system comprising:input means for communicating with image data, said image data representing a pl

1. A system for monitoring a position of a medical instrument with respect to a patient's body and for displaying images of the patient's body responsive to the position of the medical instrument, said system comprising:input means for communicating with image data, said image data representing a plurality of images of the patient's body; a patient reference unit securable from movement with respect to the patient's body yet permitting the patient's body to be moved within an operating environment; a remote unit securable from movement with respect to the medical instrument; an operating environment reference unit capable of being positioned within an operating environment; at least one field generator means associated with at least one of said patient reference unit, said remote unit, or said operating environment reference unit, said field generator means for generating a position characteristic field capable of passing through the patient's body and being substantially undisturbed by passage through the patient's body; at least one field sensor means associated with another of said patient reference unit, said remote unit, and said operating environment reference unit, said field sensor means for producing a sensor output signal responsive to the presence of said position characteristic field, said sensor output signal being representative of a position of said sensor relative to said field generator irrespective of whether any portion of the patient's body is interposed between said field generator means and said field sensor means; position detection means in communication with said field generator means and said field sensor means, said position detection means for producing position data responsive to said sensor output signal representative of a position of said remote unit with respect to said reference unit irrespective of any movement of the patient within the operating environment; tracking means in communication with said input means and said position detection means, said tracking means for selecting from said image data position image data associated with said position data; and output display means in communication with said tracking means for displaying an image of the patient's body responsive to said position image data, said position image data varying for different position data.