An ablation catheter device (100) comprises a hollow catheter main body (102), an ablation mechanism (103) and a control mechanism (105). The ablation mechanism (103) comprises a support assembly (110) capable of being expanded and compressed radially, an end (120) and a plurality of modulation units. The support assembly (110) is arranged between the far end of the catheter main body (102) and the end (120). The modulation units are arranged on the support assembly (110), and an axial through hole (122) is formed in the end (120). The control mechanism (105) comprises a drawing wire (104) and a limit unit (118) fixed on the drawing wire (104). The drawing wire (104) axially penetrates the catheter main body (102) and the through hole (122). The end (120) is arranged between the support assembly (110) and the limit unit (118), and the outer diameter of the limit unit (118) is larger than the diameter of the through hole (122). The ablation catheter device (100) is suitable for a transfemoral coronary puncture intervention path, or is preferably suitable for a transradial coronary puncture intervention path. For some bended complex artery blood vessels, the ablation catheter device (100) can reduce the adjustment and moving location difficulty in the blood vessels, avoid damages to the blood vessels as much as possible and improve the ablation effect.Linvention concerne un dispositif de cathéter dablation (100) qui comporte un corps principal de cathéter creux (102), un mécanisme dablation (103) et un mécanisme de commande (105). Le mécanisme dablation (103) comprend un ensemble support (110) capable dêtre étendu et comprimé radialement, une extrémité (120) et une pluralité dunités de modulation. Lensemble support (110) est agencé entre lextrémité éloignée du corps principal de cathéter (102) et lextrémité (120). Les unités de modulation sont disposées sur lensemble support (110), et un trou traversant axial (122) est formé dans lextrémité (120). Le mécanisme de comm
