System and method for electrode localization using ultrasound
First Claim
1. A medical system, comprising:
- one or more reference catheters having a plurality of ultrasound reference transducers;
a medical device having one or more ultrasound target transducers; and
localization processing circuitry coupled to the ultrasound reference and target transducers, the processing circuitry configured for causing the ultrasound reference transducers to transmit and receive ultrasound signals between each other in order to establish a three-dimensional coordinate system, and for causing the plurality of ultrasound reference transducers and the one or more ultrasound target transducers to transmit and receive ultrasound signals between each other in order to determine a position of the one or more ultrasound target transducers within the three-dimensional coordinate system.
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Abstract
The present invention is a device localization system that uses one or more ultrasound reference catheters to establish a fixed three-dimensional coordinate system within a patient'"'"'s heart using principles of triangulation. The coordinate system is represented graphically in three-dimensions on a video monitor and aids the clinician in guiding other medical devices, which are provided with ultrasound transducers, through the body to locations at which they are needed to perform clinical procedures. In one embodiment of a system according to the present invention, the system is used in the heart to help the physician guide mapping catheters for measuring electrical activity, and ablation catheters for ablating selected regions of cardiac tissue, to desired locations within the heart.
147 Citations
33 Claims
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1. A medical system, comprising:
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one or more reference catheters having a plurality of ultrasound reference transducers;
a medical device having one or more ultrasound target transducers; and
localization processing circuitry coupled to the ultrasound reference and target transducers, the processing circuitry configured for causing the ultrasound reference transducers to transmit and receive ultrasound signals between each other in order to establish a three-dimensional coordinate system, and for causing the plurality of ultrasound reference transducers and the one or more ultrasound target transducers to transmit and receive ultrasound signals between each other in order to determine a position of the one or more ultrasound target transducers within the three-dimensional coordinate system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of performing a medical procedure on a body, comprising:
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positioning one or more reference catheters within the body, the one or more reference catheters having a plurality of ultrasound reference transducers;
positioning a medical device within the body, the medical device having one or more ultrasound target transducers;
causing the ultrasound reference transducers to transmit and receive ultrasound signals between each other in order to establish a three-dimensional coordinate system; and
causing the plurality of ultrasound reference transducers and the one or more ultrasound target transducers to transmit and receive ultrasound signals between each other in order to determine a position of one or more ultrasound target transducers within the three-dimensional coordinate system. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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Specification