Lead conductor with pitch and torque control for MRI conditionally safe use
First Claim
Patent Images
1. A medical device lead comprising:
- an insulated lead body including at least one electrode;
a helical conductor coil electrically coupled to the at least one electrode, the helical conductor coil having a circumference and including a plurality of turns having a conductive coil pitch, the helical conductor coil helically wound from one or more conductive filars each having a conductive filar diameter; and
one or more polymer coils, each polymer coil extending over the helical conductor coil and completely around the entire circumference of the helical conductor coil, each polymer coil formed by one or more helically wound polymer filars disposed coaxially around and abutted against the circumference of the conductor coil, wherein the one or more polymer coils are configured to provide at least about 25 μ
N·
m of torque transmitting capacity along a length of the medical device lead.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical device lead includes an insulated lead body including at least one electrode, a helically coiled conductor electrically coupled to the at least one electrode, and one or more polymer coils formed coaxially with the helically coiled conductor. The helically coiled conductor includes a plurality of turns having a conductive coil pitch and including one or more conductive filars each having a conductive filar diameter. The one or more polymer coils provide at least about 25 μN·m of torque transmitting capacity along a length of the medical device lead.
310 Citations
20 Claims
-
1. A medical device lead comprising:
-
an insulated lead body including at least one electrode; a helical conductor coil electrically coupled to the at least one electrode, the helical conductor coil having a circumference and including a plurality of turns having a conductive coil pitch, the helical conductor coil helically wound from one or more conductive filars each having a conductive filar diameter; and one or more polymer coils, each polymer coil extending over the helical conductor coil and completely around the entire circumference of the helical conductor coil, each polymer coil formed by one or more helically wound polymer filars disposed coaxially around and abutted against the circumference of the conductor coil, wherein the one or more polymer coils are configured to provide at least about 25 μ
N·
m of torque transmitting capacity along a length of the medical device lead. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A medical device lead comprising:
-
an insulated lead body including at least one electrode; a helical conductor coil electrically coupled to the at least one electrode, the helical conductor coil including a plurality of turns having a coil pitch, the helical conductor coil having a circumference and an outer diameter, the helical conductor coil helically wound from one or more conductive filars each having a filar diameter, wherein the coil pitch and outer diameter are selected based on the filar diameter to minimize heating of the helically coiled conductor in the presence of an MRI field; and a polymer coil extending over the helical conductor coil and completely around the entire circumference of the helical conductor coil, the polymer coil formed by one or more polymer filars disposed coaxially around and abutted against the circumference of the helical conductor coil, wherein the polymer coil is configured to increase a torque transmitting capacity of the helically coiled conductor. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. A conductor assembly for a medical device lead, the conductor assembly comprising:
-
a helical conductor coil including a plurality of turns having a conductive coil pitch, the helical conductor coil wound from one or more conductive filars each having a conductive filar diameter, the helical conductor coil having a circumference; and one or more polymer coils each including one or more polymer filars disposed over and coaxially around the entire circumference of the helical conductor coil and abutted against the circumference of the helical conductor coil, wherein the one or more polymer coils are configured to increase a torque transmitting capacity of the helical conductor coil. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification