Non-electric field renal denervation electrode
First Claim
1. An RF treatment device comprising:
- a device body; and
an assembly connected to the device body comprising one or more heating elements connected to the device body, each heating element having a conductor and a layer of an RF dissipating material overlying the conductor so that the layer of RF dissipating material is disposed between the conductor and body tissues of a subject when the assembly is in an operative position within the body of the subject, wherein the RF dissipating layer has a thickness and a Debye length, the thickness of the dissipating layer being greater than the Debye length.
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Accused Products
Abstract
A renal denervation device can include an elongated catheter body extending along a longitudinal axis, and an assembly connected to the catheter body. The assembly includes a plurality of heating elements connected to the catheter body. Each heating element has a conductor and a layer of an RF dissipating material such as a polymer overlying the conductor. During operation of the device, the layer of RF dissipating material is disposed between the conductor and body tissues of a subject. The layer of RF dissipating material is substantially thicker than the Debye length within the material in order to reduce the electric field reaching the tissue and to eliminate direct contact of the electrode with the body tissue.
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Citations
22 Claims
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1. An RF treatment device comprising:
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a device body; and an assembly connected to the device body comprising one or more heating elements connected to the device body, each heating element having a conductor and a layer of an RF dissipating material overlying the conductor so that the layer of RF dissipating material is disposed between the conductor and body tissues of a subject when the assembly is in an operative position within the body of the subject, wherein the RF dissipating layer has a thickness and a Debye length, the thickness of the dissipating layer being greater than the Debye length. - View Dependent Claims (2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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3. The device is selected wherein the polymeric from the group consisting of solid polymeric hydrogel electrolytes, polyelectrolytes, ionomers and combinations thereof.
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17. A method of providing RF treatment comprising the steps of:
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positioning one or more heating elements within a blood vessel of a mammalian subject, each heating element having a conductor and a layer of an RF dissipating material overlying the metallic conductor, the positioning step being performed so that the layer of RF dissipating material is disposed between the conductor and a wall of the blood vessel; and applying RF power to the conductors of the heating elements to heat tissues of the subject, the RF dissipating material of the heating elements substantially blocking transmission of RF electric fields to the tissues of the subject. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification