Ablation catheter

Surgery – Instruments – Electrical application

Reexamination Certificate

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C600S374000, C607S122000

Reexamination Certificate

active

06974457

ABSTRACT:
An ablation catheter comprises a shaft and at least one ablation electrode which may be fixed or movable relative to the shaft. An insulating cap is placed over portions of the electrode which are susceptible to high current concentrations when RF energy is applied to the electrode. Typically, such portions occur in the region of abrupt surface transitions such as the edges of the electrode.

REFERENCES:
patent: 4328812 (1982-05-01), Ufford et al.
patent: 4559951 (1985-12-01), Dahl et al.
patent: 5257635 (1993-11-01), Langberg
patent: 5472441 (1995-12-01), Edwards et al.
patent: 5545161 (1996-08-01), Imran

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