Biolectrical cable having wires wrapped in a lazy helix

Abstract

A cardiac implant cable comprising a set of more than six insulated leads, wrapped in a helix, in which said insulated leads form an angle with a line that is longitudinally aligned with the cable, of less than 45°. In this arrangement, the ratio of the lay length to the width of the insulated leads is typically greater than 16. This arrangement permits a greater number cf leads to be placed in a cable having a predetermined diameter, than would be possible for shorter lay lengths.

1 . A cardiac implant electric cable comprising a set of more than six insulated leads, wrapped in a helix, in which said insulated leads form an angle with a line that is longitudinally aligned with the cable, of less than 45°.  
     
     
         2 . The cardiac implant electric cable of  claim 1  wherein said insulated leads form an angle with a line that is longitudinally aligned with the cable, of less than 30°.  
     
     
         3 . A cardiac implant electric cable comprising a set of more than six insulated leads, wrapped in a helix, in which the ratio of the lay length to the width of said insulated leads is greater than 16.  
     
     
         4 . The cardiac implant electric cable of  claim 3 , in which the ratio of the lay length to the width of said insulated leads is greater than 25.