3-D ultrasound navigation during radio-frequency ablation
First Claim
1. A system for positioning a medical device and ablating a tissue within a body, comprising:
- a power supply, said power supply generating a current that is suitable for ablating the tissue and providing said current to an energy delivery device, the energy delivery device configured to provide said current to the tissue to ablate the tissue;
a navigation system, said navigation system establishing a three-dimensional reference coordinate system and determining a position of the energy delivery device within said reference coordinate system; and
a controller, said controller switching between activating said power supply and said navigation system so that said navigation system operates without significant interference from said power supply current during ablation of the tissue.
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Accused Products
Abstract
System and method for simultaneously tracking a position of a medical device and ablating a tissue within a body. The system includes a power supply, a navigation device, and a control circuit. The power supply generates a current that is suitable for ablating tissue, such as heart tissue. The navigation device establishes a three-dimensional reference coordinate system and identifies a location of an energy delivery device in relation to the established coordinate system. The control circuit switches or alternates between activating the power supply and acquiring ultrasound data that identifies the location of the medical device within the established coordinate system.
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Citations
54 Claims
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1. A system for positioning a medical device and ablating a tissue within a body, comprising:
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a power supply, said power supply generating a current that is suitable for ablating the tissue and providing said current to an energy delivery device, the energy delivery device configured to provide said current to the tissue to ablate the tissue;
a navigation system, said navigation system establishing a three-dimensional reference coordinate system and determining a position of the energy delivery device within said reference coordinate system; and
a controller, said controller switching between activating said power supply and said navigation system so that said navigation system operates without significant interference from said power supply current during ablation of the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A system for positioning a medical device and ablating a tissue within a body, comprising:
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a power supply, said power supply generating a current that is suitable for ablating the tissue and providing said current to an energy delivery device, the energy delivery device configured to provide said current to the tissue;
an energy delivery device having an isotropic ultrasound transducer mounted thereon;
a navigation system, said navigation system including a reference catheter having a plurality of isotropic ultrasound transducers mounted thereon, said reference catheter transducers emitting ultrasound signals to establish a three-dimensional reference coordinate system, the position of said energy delivery device being determined relative to said reference coordinate system based on ultrasound signals transmitted and received between said energy delivery device transducer and said reference catheter transducers; and
a controller, said controller switching between activating said power supply and said transducers of said reference catheter and said energy delivery device so that said navigation system operates without significant interference from said power supply current during ablation of the tissue. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46)
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43. The system of claim 43, said decay circuit comprising a solid state switch.
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47. A method of positioning a medical device and ablating a tissue within a body, comprising:
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providing a power supply, a navigation system and a controller, the controller configured to send timing signals to activate the power supply and the navigation system;
establishing a three-dimensional reference coordinate system with the navigation system, determining a position of the energy delivery device within the reference coordinate system; and
switching between activating the power supply and the navigation system. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54)
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Specification