Simplified torquing electrode catheter

Details Simplified torquing electrode catheter Simplified torquing electrode catheter

1995-08-07

1998-10-27

Lacyk, John P.

Surgery

Instruments

Electrical application

607119, 600585, A61N 100

Patent

active

058272720

ABSTRACT:
An electrode catheter (2) includes a handle (4) to which a catheter shaft (6) is mounted. The catheter shaft has a distal end (10) carrying plurality of electrodes (12). Dual purpose wires (18) extend from an electrical connector (14) on the handle, through separate axial lumens (16) in the catheter shaft and to the electrodes. The dual purpose wires are physically secured at their distal and proximal ends to the distal end of the catheter shaft and to the handle, respectively, so that rotation of the handle causes a rotational torque to be transmitted through the dual purpose wires to the distal end of the catheter shaft. Each dual purpose wire has an electrical resistance of no greater than about 0.80 ohms per centimeter and a torsional stiffness of at least about 0.25 to 1.0 inch-ounce (17654 to 70616 dyne-cm) for each 110 cm length of catheter shaft when the proximal end of the catheter shaft is rotated 3 turns. This construction provides a simply constructed, low cost torquing electrode catheter.

REFERENCES:
patent: Re34502 (1994-01-01), Webster, Jr.
patent: 4301790 (1981-11-01), Bol et al.
patent: 5125896 (1992-06-01), Hojeibane
patent: 5185004 (1993-02-01), Lashinski
patent: 5231995 (1993-08-01), Desai
patent: 5242441 (1993-09-01), Avitall
patent: 5282845 (1994-02-01), Bush et al.
patent: 5315996 (1994-05-01), Lundquist
patent: 5318041 (1994-06-01), DuBois et al.
patent: 5318525 (1994-06-01), West et al.
patent: 5318528 (1994-06-01), Heaven et al.

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