Magnetically guided catheters
First Claim
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1. An electrode assembly for an ablation catheter, comprising:
- a positioning magnet body having a proximal shank portion and a distal portion;
a manifold including a distribution cavity configured to receive irrigation fluid and an irrigation passageway coupled to said cavity having a distal exit port for delivery of said fluid, said cavity and said passageway being isolated from said body; and
a unitary outer capsule surrounding said body so as to isolate said body from external bio-fluids, said capsule comprising electrically conductive material including a distal ablation surface.
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Abstract
A magnetically-guided catheter includes a tip positioning magnet in the distal electrode assembly configured to interact with externally applied magnetic fields for magnetically-guided movement. A magnetically-guided mapping catheter includes an electrically-conductive capsule in the form of a casing that includes a distal ablation surface and isolates the positioning magnet from bio-fluids to prevent corrosion. An open irrigation ablation catheter includes an isolated manifold that isolates the positioning magnet from contact with irrigation fluid to prevent corrosion.
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Citations
16 Claims
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1. An electrode assembly for an ablation catheter, comprising:
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a positioning magnet body having a proximal shank portion and a distal portion; a manifold including a distribution cavity configured to receive irrigation fluid and an irrigation passageway coupled to said cavity having a distal exit port for delivery of said fluid, said cavity and said passageway being isolated from said body; and a unitary outer capsule surrounding said body so as to isolate said body from external bio-fluids, said capsule comprising electrically conductive material including a distal ablation surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 15, 16)
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12. An electrode assembly for an electrode catheter, comprising:
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a positioning magnet body having a proximal shank portion and a distal portion; and a unitary outer casing surrounding said body so as to isolate said body from external bio-fluids, said casing including a cup-shaped tip cap configured to cover said distal portion of said body and a cylindrical-shaped shank cover configured to surround said shank portion of said body, said casing including said cup-shaped tip cap comprising electrically conductive material, said shank cover being configured to receive a distal end portion of a catheter shaft. - View Dependent Claims (13, 14)
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Specification