System for creating linear lesions for the treatment of atrial fibrillation
First Claim
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1. A system for forming linear lesions in tissue, the system comprising:
- a control unit, the control unit having an ultrasonic generator;
an ultrasonic applicator operatively connected to the control unit, the ultrasonic applicator comprising;
an ultrasonic transducer having an acoustic window;
an ultrasonic vibratory element, the ultrasonic vibratory element having a focusing shape with a focus located in the direction of the acoustic window;
an air gap adjacent to the ultrasonic vibratory element in an opposite direction from the focal point; and
a porous section adjacent a bottom surface, the porous section capable of holding a supply of marking ink, whereby the location of the lesion is indicated by the marking ink when the transducer is applied to the tissue surface; and
the system further comprising means for controlling the depth of the lesion formed in the tissue.
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Abstract
A system for forming linear lesions in tissue, the system comprising a control unit having an ultrasound vibration driving section, and an ultrasonic applicator operatively connected to the control unit. The ultrasonic applicator comprises an ultrasonic transducer having an acoustic window, and an ultrasonic vibratory element, the ultrasonic vibratory element having a convergent shape with a focus located in the direction of the acoustic window. An air gap is adjacent to the ultrasonic vibratory element in an opposite direction from the focal point. The system further comprises means for controlling the depth of the lesion formed in the tissue.
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10 Claims
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1. A system for forming linear lesions in tissue, the system comprising:
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a control unit, the control unit having an ultrasonic generator; an ultrasonic applicator operatively connected to the control unit, the ultrasonic applicator comprising; an ultrasonic transducer having an acoustic window; an ultrasonic vibratory element, the ultrasonic vibratory element having a focusing shape with a focus located in the direction of the acoustic window; an air gap adjacent to the ultrasonic vibratory element in an opposite direction from the focal point; and a porous section adjacent a bottom surface, the porous section capable of holding a supply of marking ink, whereby the location of the lesion is indicated by the marking ink when the transducer is applied to the tissue surface; and
the system further comprising means for controlling the depth of the lesion formed in the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An ultrasonic applicator comprising:
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an ultrasonic transducer having an acoustic window; an ultrasonic vibratory element, the ultrasonic vibratory element having a focusing shape with a focus located in the direction of the acoustic window; an air gap adjacent to the piezoelectric crystal in an opposite direction from the focal point; a porous section adjacent a bottom surface, the porous section capable of holding a supply of marking ink, whereby the location of the lesion is indicated by the marking ink when the transducer is applied to the tissue surface; and means for controlling the depth of the lesion formed in the tissue. - View Dependent Claims (9, 10)
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Specification