US 11,305,108 B2 · Implantable medical lead devices and systems having balanced clocked conductor positions

Abstract

Implantable medical lead devices such as leads and lead extensions include conductors within the lead device body that interconnect proximal and distal electrical connectors and that have balanced clocked positions. The balanced clocked positions may be achieved by separating a first conductor from a second conductor by an adequate amount, where the first conductor has a length as measured from a given point along the lead to the end of the conductor that is most similar to the length of the second conductor as measured in the same manner. The balanced clocked position of conductor pairings based on similarity of length may provide benefits such as reducing the tendency of the lead to curve when one or more layers of the lead body are being injection molded around the conductors.

Claims22

Dependent claims

An implantable medical lead device, comprising:

a lead device body;
at least four proximal electrical connectors located on a proximal end of the lead device body and separated longitudinally;
at least four distal electrical connectors located on a distal end of the lead device body;
and
at least four conductors within the lead device body,
wherein each of the conductors of the at least four conductors interconnects a corresponding proximal electrical connector of the at least four proximal electrical connectors to a corresponding distal electrical connector of the at least four distal electrical connectors,
wherein each of the at least four conductors has a length as measured from a given longitudinal position along the lead device body where the at least four conductors are connected to the corresponding proximal electrical connector of each conductor,
wherein the length of a first conductor of the at least four conductors is most similar among the at least four conductors to the length of a second conductor of the at least four conductors,
and wherein the first conductor and the second conductor are clocked in positions providing an angular separation between the first conductor and the second conductor of at least 135 degrees.

6 more elements

An implantable medical system, comprising:

an implantable medical stimulator device that includes a header having a lead bore and electrical contacts within the lead bore;
and
an implantable medical lead device that comprises:
a lead device body;
at least four proximal electrical connectors located on a proximal end of the lead device body and separated longitudinally, the proximal end being located within the lead bore such that the at least four proximal electrical connectors are in contact with corresponding electrical contacts present within the lead bore;
at least four distal electrical connectors located on a distal end of the lead device body;
and
at least four conductors within the lead device body,
wherein each of the conductors of the at least four conductors interconnects a corresponding proximal electrical connector of the at least four proximal electrical connectors to a corresponding distal electrical connector of the at least four distal electrical connectors,
wherein the at least four conductors has a length measured from a given longitudinal position along the lead device body where the at least four conductors are connected to the corresponding proximal electrical connector of each conductor,
wherein the length of a first conductor of the at least four conductors is most similar among the at least four conductors to the length of a second conductor of the at least four conductors,
and wherein the first conductor and the second conductor are clocked in positions providing an angular separation between the first conductor and the second conductor of at least 135 degrees.

9 more elements