Electrode arrangement for use in a medical instrument
First Claim
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1. An ablation device for electrically isolating the pulmonary veins, comprising:
- a longitudinal working member having a longitudinal axis and adapted to direct ablative energy predominantly in a first predetermined direction, that extends radially from the longitudinal axis of the longitudinal working member; and
a pair of electrodes operably attached to the longitudinal working member and spaced apart in a second predetermined direction lateral to the longitudinal axis of the longitudinal working member to sense electrical activity of biological tissues at a reference point for determining the position of the working member with respect to sensed biological tissue inside the body of the patient for properly aligning the working member with biological tissues about the pulmonary veins targeted for ablation.
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Abstract
A medical instrument is disclosed. The medical instrument includes a pair of spaced apart and electrically isolated elongated wire electrodes positioned adjacent one another on a working member. The wire electrodes are arranged for sensing electrical activity of biological tissues inside the body of the patient. The medical instrument also includes a pair of electrically isolated electrode wires that extend through the working member. Each of the electrode wires are electrically coupled to an associated wire electrode.
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Citations
10 Claims
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1. An ablation device for electrically isolating the pulmonary veins, comprising:
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a longitudinal working member having a longitudinal axis and adapted to direct ablative energy predominantly in a first predetermined direction, that extends radially from the longitudinal axis of the longitudinal working member; and
a pair of electrodes operably attached to the longitudinal working member and spaced apart in a second predetermined direction lateral to the longitudinal axis of the longitudinal working member to sense electrical activity of biological tissues at a reference point for determining the position of the working member with respect to sensed biological tissue inside the body of the patient for properly aligning the working member with biological tissues about the pulmonary veins targeted for ablation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification