Intracardiac imaging system utilizing a multipurpose catheter
First Claim
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1. An intracardiac echo catheter comprising:
- a flexible member having a distal end and a proximal end;
a sensor array having an ultrasound transducer and at least three electrodes being attached to the distal end, wherein each of the at least three electrodes comprises an electrical position and a physical position, and wherein the electrical position comprises a further radial distance from a longitudinal axis of the sensor array than a radial distance of the physical position for at least one of the at least three electrodes, each of the electrodes configured to generate a position signal in response to an electric field, the electrodes being arranged such that positions indicated by the position signals are not collinear and are not orthogonal;
whereby the position signals allow a visualization, navigation, or mapping system to locate and orient the catheter in space.
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Abstract
A three dimensional physiological mapping system utilizing an intracardiac echo catheter capable of being located in six degrees of freedom by a visualization, navigation, or mapping system. An echocardiography image of the intracardiac echo catheter may be projected within a geometric model of the visualization, navigation, or mapping system where the location of the projected image is adjusted in response to user input identifying a structure present in the echocardiography image and the geometric model.
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Citations
20 Claims
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1. An intracardiac echo catheter comprising:
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a flexible member having a distal end and a proximal end; a sensor array having an ultrasound transducer and at least three electrodes being attached to the distal end, wherein each of the at least three electrodes comprises an electrical position and a physical position, and wherein the electrical position comprises a further radial distance from a longitudinal axis of the sensor array than a radial distance of the physical position for at least one of the at least three electrodes, each of the electrodes configured to generate a position signal in response to an electric field, the electrodes being arranged such that positions indicated by the position signals are not collinear and are not orthogonal; whereby the position signals allow a visualization, navigation, or mapping system to locate and orient the catheter in space. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An elongate medical device comprising:
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a flexible member having a distal end portion and a proximal end portion; an ultrasound transducer disposed at the distal end portion of the flexible member; and at least three electrodes disposed in a non-collinear and non-orthogonal configuration at the distal end portion of the flexible member, wherein each of the at least three electrodes comprises an electrical position and a physical position, and wherein the electrical position comprises a further radial distance from a longitudinal axis of the flexible member than a radial distance of the physical position for at least one of the at least three electrodes, each of the electrodes configured to generate a position signal in response to an electric field. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A system comprising:
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an elongate medical device comprising; a flexible member having a distal end portion and a proximal end portion; an ultrasound transducer disposed at the distal end portion of the flexible member, the ultrasound transducer associated with an ultrasound imaging plane; at least three electrodes disposed in a non-collinear and non-orthogonal configuration at the distal end portion of the flexible member, wherein each of the at least three electrodes comprises an electrical position and a physical position, and wherein the electrical position comprises a further radial distance from a longitudinal axis of the flexible member than a radial distance of the physical position for at least one of the at least three electrodes, each of the electrodes configured to generate a position signal in response to an electric field; and an electronic controller comprising a processor, the electronic controller configured to receive or determine respective electrical positions of the at least three electrodes and to determine a position and orientation of the ultrasound imaging plane according to the respective electrical positions of the at least three electrodes. - View Dependent Claims (17, 18, 19, 20)
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Specification