Steering mechanism for catheters and methods for making same

Details Steering mechanism for catheters and methods for making same Steering mechanism for catheters and methods for making same

1995-02-14

1997-02-18

McDermott, Corrine M.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

607101, 607156, A61M 3700

Patent

active

056036973

ABSTRACT:
A medical catheter steering construction is described that is particularly well suited for steering ablation catheters that utilize coaxial transmission lines. An elongated coaxial transmission line is received within a lumen in the flexible tubular member. An antenna is coupled to the center conductor of the coaxial transmission line. A shield termination is secured to the shield portion of the coaxial transmission line. A steering wire that extends through the tubular member to permit a user to steer the catheter during insertion is attached to the shield termination. With this arrangement, when the catheter is inserted into the vessel of a patient, the tip of the catheter may be steered by pulling on the steering wire. In one embodiment of the invention, a distal portion of the tubular member has a stiffness that is significantly less than the stiffness of the majority of the tubular member to facilitate bending during steering. Suitable methods for making such catheters are also described.

REFERENCES:
patent: 5364352 (1994-11-01), Cimino et al.
patent: 5370644 (1994-12-01), Langberg
patent: 5391147 (1995-02-01), Imran et al.
patent: 5397304 (1995-03-01), Truckai
patent: 5405346 (1995-04-01), Grundy et al.
patent: 5487757 (1996-01-01), Truckai et al.

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