Detection mechanism, radio-frequency ablation catheter, and radio-frequency ablation system

Abstract

The present invention provides a detection mechanism, a radio-frequency ablation catheter, and a radio-frequency ablation system. The radio-frequency ablation catheter comprises a handle portion (2), a needle tube portion (1), a central electrode (3), and a detection mechanism. The needle tube portion (1) comprises a first tube sleeve (11) and a second tube sleeve (12), the handle portion (2) comprises a cylinder sleeve (21) and a sliding button (22), the central electrode (3) comprises an electrode body (31), an electrode wire (26), and an electrode connector (23), and the detection mechanism comprises a fixing base (5), a traction wire, a connecting base (6), and multiple claw-shaped electrodes (7). A distal end of the traction wire is fixed on the fixing base (5), and a proximal end of the traction wire is fixed on the sliding button (22); and the claw-shaped electrodes (7) are fixed on the fixing base (5), and slidably provided in the connecting base (6). The traction wire is pulled by the sliding button (22) to drive the fixing base (5) to push the claw-shaped electrodes (7) in or out of the connecting base (6). This facilitates the control of the claw-shaped electrodes (7) by a user during surgery, the determination of the temperature or impedance of the claw-shaped electrodes (7), and thus the determination of the progress of ablation.

Dependencies are inferred from the claim text.