Device on lead to prevent perforation and/or fixate lead
First Claim
1. A lead assembly configured for implantation within a blood vessel, the lead assembly comprising:
- a lead body defining a lead body lumen and extending longitudinally along a lead body axis with threads coupled to the lead body;
at least one conductor extending within the lead body from a proximal end toward a distal end of the lead body;
a driver disposed within the lead body lumen and axially displaceable relative to the lead body axis, the driver rotatable and axially displaceable on the threads; and
a driven member integral with the lead body and displaceable away from the lead body axis, the driven member at least partially defining an expandable passage, the driver displaceable-from an opening into the expandable passage and through the expandable passage, the driver having at least one outer dimension that is larger than at least one internal dimension of the expandable passage, with the driven member including at least one weaker portion, the driven member to deform at the weaker portion to define an expanded exterior diameter that is larger than a non-expanded exterior diameter of the driven member when the at least one outer dimension of the driver is disposed in the expandable passage;
wherein when the driven member defines the expanded exterior diameter, the driven member is configured to engage the vessel in order to fixate the lead assembly in the vessel while resisting perforation of the vessel by the lead assembly.
1 Assignment
0 Petitions
Accused Products
Abstract
This document discusses, among other things, a lead body extending longitudinally along a lead axis, a driver axially displaceable relative to the lead body, and a driven member coupled to the lead body and displaceable away from the lead axis. The driven member at least partially defines an expandable passage having at least one internal dimension. The driver is displaceable into the expandable passage and has at least one outer dimension that is larger than the at least one internal dimension of the expandable passage. An example method includes disposing a first member having a first cross-section in a lead assembly having a lead axis, an expandable passage, and a displaceable member proximate the expandable passage. The method further includes urging the first member into the expandable passage in the lead assembly, and urging the displaceable member away from the lead axis to expand the expandable passage.
-
Citations
38 Claims
-
1. A lead assembly configured for implantation within a blood vessel, the lead assembly comprising:
-
a lead body defining a lead body lumen and extending longitudinally along a lead body axis with threads coupled to the lead body; at least one conductor extending within the lead body from a proximal end toward a distal end of the lead body; a driver disposed within the lead body lumen and axially displaceable relative to the lead body axis, the driver rotatable and axially displaceable on the threads; and a driven member integral with the lead body and displaceable away from the lead body axis, the driven member at least partially defining an expandable passage, the driver displaceable-from an opening into the expandable passage and through the expandable passage, the driver having at least one outer dimension that is larger than at least one internal dimension of the expandable passage, with the driven member including at least one weaker portion, the driven member to deform at the weaker portion to define an expanded exterior diameter that is larger than a non-expanded exterior diameter of the driven member when the at least one outer dimension of the driver is disposed in the expandable passage; wherein when the driven member defines the expanded exterior diameter, the driven member is configured to engage the vessel in order to fixate the lead assembly in the vessel while resisting perforation of the vessel by the lead assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
-
18. A lead assembly for implantation within a blood vessel, the lead assembly comprising:
-
a lead body defining a lumen and extending longitudinally along a lead body axis from a proximal end to a distal end; a conductor extending within the lead body from the proximal end in a direction toward the distal end of the lead body; a displaceable member integral with the lead body and displaceable away from the lead body axis, the displaceable member at least partially defining an expandable passage with the displaceable member including at least one weaker portion; a means for urging the displaceable member away from the lead body axis, the means for urging displaceable from an opening into the expandable passage and through the expandable passage, the means for urging having at least one outer dimension that is larger than at least one internal dimension of the expandable passage, the displaceable member to deform at the weaker portion to define an expanded exterior diameter that is larger than a non-expanded exterior diameter of the displaceable member when the at least one outer dimension of the means for urging is disposed in the expandable passage; and a fixation structure coupled to the means for urging disposed proximate the distal end of the lead body, with the displaceable member having an outer surface to contact a tissue surface proximate the fixation structure, wherein when the displaceable member defines the expanded exterior diameter, the displaceable member is configured to engage the tissue surface in order to fixate the lead assembly to the tissue surface while resisting perforation of the tissue surface by the lead assembly. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
-
-
30. A method for expanding a driven member of a lead assembly, comprising:
-
disposing a driver axially into a lumen of a tubular lead body of the lead assembly along a lead body axis, the lead body including a conductor extending within the lead body from a proximal end in a direction toward a distal end; disposing the driver along threads of the lead body and into an internal passage of driven member integral with the lead body and expanding the driven member away from the lead body axis, with expanding the driven member including; deforming the driven member at a weaker portion of the driven member by disposing the driver into the expandable passage, with an outer dimension of the driver being disposed into a portion of the expandable passage including an internal passage dimension smaller than the outer dimension; and expanding an exterior diameter of the driven member to a dimension larger than a non-expanded exterior diameter of the driven member, such that the driven member engages a blood vessel in order to fixate the lead assembly in the vessel while resisting perforation of the vessel by the lead assembly. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38)
-
Specification