| US 7,558,632 B1 | ||
| Method of manufacturing an implantable J-shaped lead | ||
| Scott Salys, Plano, Tex. (US) | ||
| Assigned to Pacesetter, Inc., Sylmar, Calif. (US) | ||
| Filed on Jul. 21, 2006, as Appl. No. 11/459,315. | ||
| Application 11/459315 is a division of application No. 10/224672, filed on Aug. 20, 2002, abandoned. | ||
| Int. Cl. A61N 1/05 (2006.01) | ||
| U.S. Cl. 607—125 [607/122] | 18 Claims |
| 13. A method of fabricating an implantable multi-conductor endocardial lead extending between proximal and distal ends for
use with a cardiac stimulation device, the method comprising:
(a) providing a first tube of flexible resilient insulative material having a first longitudinal extending lumen with an inner
diameter;
(b) inserting coaxially into the first longitudinally extending lumen a second tube of flexible resilient insulative material
having a second longitudinally extending lumen, the second tube having an outer diameter smaller than the inner diameter of
the first lumen thereby defining an annular cavity;
(c) inserting into the annular cavity between the first tube and the second tube an outer coil conductor extending between
the proximal and distal ends thereof;
(d) inserting into the second longitudinally extending lumen an inner coil conductor extending between the proximal and distal
ends thereof;
(e) pre-shaping the outer coil conductor into a generally circular looped configuration while maintaining a normally straight
configuration for the first tube, the second tube, and the inner coil conductor when in a free state; and
(f) assembling the first tube, the second tube, outer coil conductor, and inner coil conductor such that the resulting endocardial
lead is caused to result in a J-configuration at its distal end.
|