发明名称 |
Electrophysiology/ablation catheter having lariat configuration of variable radius |
摘要 |
A remotely deflectable electrophysiology/ablation catheter of the type intended for placing into an interior passage of the heart is disclosed. The distal end of this elongated tubular catheter has a pair of tension/compression members each with a flattened end portion connected to the distal electrode and extending through the catheter casing and attached to a user moveable actuator for effecting the tension/compression thereon for remotely curling the distal end of the catheter. Spaced ring electrodes are provided adjacent the distal electrode. A permanent bend is pre-formed in the casing and tension/compression members adjacent the ring electrodes about an axis perpendicular to the elongated tension/compression members. Movement of the remote actuator causes the distal portion of the catheter to curl into a lariat in a plane perpendicular to the axis along the elongated catheter casing, thus permitting electrical mapping or ablation with the distal and/or ring electrodes about the inner surface of the heart passage into which the lariat is formed and situated. The lariat can achieve a curvature greater than 360 degrees and at a significantly reduced radius to allow insertion of the catheter distal end into passages of reduced dimension.
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申请公布号 |
US7081114(B2) |
申请公布日期 |
2006.07.25 |
申请号 |
US20030436779 |
申请日期 |
2003.05.13 |
申请人 |
ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC. |
发明人 |
RASHIDI RASSOLL |
分类号 |
A61B18/18;A61B5/04;A61B17/00;A61B18/14;A61N1/37 |
主分类号 |
A61B18/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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