초록 ▼

A suction ablation catheter, for use in inactivating portions of the heart\s conduction system to prevent abnormal heartbeat rates, comprises a tubular body having an open, distal end and a proximal aperture for applying suction through the catheter and through the distal end. The catheter also has

A suction ablation catheter, for use in inactivating portions of the heart\s conduction system to prevent abnormal heartbeat rates, comprises a tubular body having an open, distal end and a proximal aperture for applying suction through the catheter and through the distal end. The catheter also has an electrode at or adjacent the distal end, and an electrode lead extending along the catheter for communication by the electrode with a power source. In accordance with this invention, a tubular, insulating member made of refractory material is positioned adjacent the distal end, the electrode being positioned within the insulating member to localize the effects of electrical pulses emitted from the electrode.

대표청구항 ▼

In a catheter which comprises a tubular body having a bore, having an open distal end, and having a proximal aperture for applying suction through said catheter bore to the distal end, said catheter also having an electrode coupled to said tubular body adjacent said distal end and an electrode lead

In a catheter which comprises a tubular body having a bore, having an open distal end, and having a proximal aperture for applying suction through said catheter bore to the distal end, said catheter also having an electrode coupled to said tubular body adjacent said distal end and an electrode lead extending along said catheter for communication of the electrode with a power source, said electrode being adapted to contact body fluids and to provide electrical pulses when said catheter is placed within a living body, the improvement comprising, in combination: a tubular refractory insulating member having a bore and positioned adjacent said distal end, said electrode being positioned within said insulating member, to localize the effects of electrical pulses emitted from said electrode.