Far Field-Insensitive Intracardiac Catheter Electrodes
First Claim
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1. An apparatus comprisinga catheter having an elongated distal portion;
- an electrode assembly disposed on the distal portion and comprising;
a sensing electrode connected to a receiver; and
at least one grounded guard electrode spaced apart from the sensing electrode by a gap, the sensing electrode being bracketed on at least two sides by the at least one grounded guard electrode.
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Abstract
Cardiac catheterization is carried out using a catheter having an electrode assembly disposed on the distal portion of the catheter. The electrode assembly includes a sensing electrode connected to a remote receiver, and at least one grounded guard electrode spaced apart from the sensing electrode by a gap. The sensing electrode is bracketed on at least two sides by the at least one grounded guard electrode. Signals are received from the sensing electrode in the receiver
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Citations
16 Claims
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1. An apparatus comprising
a catheter having an elongated distal portion; -
an electrode assembly disposed on the distal portion and comprising; a sensing electrode connected to a receiver; and at least one grounded guard electrode spaced apart from the sensing electrode by a gap, the sensing electrode being bracketed on at least two sides by the at least one grounded guard electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method comprising the steps of:
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inserting into a heart of a living subject a catheter having an elongated distal portion, an electrode assembly disposed on the distal portion, the electrode assembly comprising a unipolar sensing electrode connected to a receiver and at least one grounded guard electrode spaced apart from the sensing electrode by a gap, the sensing electrode being bracketed on at least two sides by the at least one grounded guard electrode; and receiving signals from the sensing electrode in the receiver. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification