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AssigneeBiosense, Inc.
InventorsSHLOMO BEN-HAIM, DANIEL OSADCHY, UDI PELESS, ILAN GREENBERG
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A locating system for determining the location and orientation of an invasive medical instrument, for example a catheter (10) or endoscope, relative to a reference frame, comprising: a plurality of field generators (18, 20, 22) which generate known, distinguishable fields, preferably continuous AC magnetic fields, in response to drive signals; a plurality of sensors (30, 32, 34) situated in the invasive medical instrument (10) proximate the distal end thereof which generate sensor signals in response to said fields; and a signal processor (26) which has an input for a plurality of signals corresponding to said drive signals and said sensor signals and which produces the three location coordinates and three orientation coordinates of a point on the invasive medical instrument.
A locating system for determining the location and orientation of an invasive medical instrument relative to a reference frame, comprising:
The locating system of any of the preceding claims wherein the fields generated by each of the field generators have a different frequency, a different phase, or both a different frequency and a different phase.
The locating system of any of the preceding claims, wherein the field generated by each field generator has a different frequency.
The locating system of any of the preceding claims wherein the fields are AC magnetic fields.
The locating system of any of the preceding claims and including a display system for displaying the position of the point on the invasive medical instrument.
The locating system of any of the preceding claims wherein there is an additional sensor on a portion of the invasive medical instrument which senses a local condition.
The locating system of any of claims 16-22 wherein the additional sensor is operative for supplying electrical energy to the endocardium for ablating a portion of the endocardium.
The locating system of any of the preceding claims and further comprising a reference instrument which includes a plurality of sensors situated in the reference instrument, wherein said display system displays the position of the point on the invasive medical instrument relative to the position of a point on the reference instrument.
An imaging system for intra-body ultrasonic imaging comprising:
The system of any of the preceding claims wherein the invasive medical instrument is a catheter or endoscope.
A method of determining the position and orientation of an invasive medical instrument having a distal end, comprising:
An ultrasonic intra-body imaging method comprising:
A invasive medical instrument comprising a plurality of at least three magnetic field sensors proximate the distal end thereof, said sensors having a fixed orientation therebetween.
Apparatus for steering the distal end of an invasive medical instrument comprising:
A method of producing a three dimensional image of the internal surface of an internal body organ comprising:
A invasive medical instrument comprising a plurality of magnetic field sensors and an ultrasound transducer proximate the distal end thereof.
Dependencies are inferred from the claim text.