Full Visibility Lead Retention
AssigneeMedtronic, Inc.
InventorsAndrew J. Ries, Eric J. Wengreen, John E. Lovins, Randy S. Roles, Michael R. Klardie, Thomas I. Ceballos
Life of this patent
Estimating the term…
Abstract
This application discusses, among other things, an implantable medical device including a setscrew that enables lead tip visibility as an indicator of full lead insertion without requiring a grommet. An example setscrew has a metal core with an insulative coating disposed over the core to electrically isolate it from body fluids and surrounding tissue. In another example, the setscrew incorporates a sealing capability by including a sealing member that is coupled to the setscrew.
Claims20
An implantable medical device (IMD) assembly having a header for coupling a lead and a setscrew for securing the lead to the header, the setscrew comprising:
- a metal core having:
- a head portion having an engagement segment configured for application of torque;
- a shank portion having a threaded outer surface for threadedly-coupling to the header;
- an insulating coating disposed over the head portion of the metal core, the insulating coating having a thickness sufficient to electrically isolate the head portion from a surrounding medium;
- and
- a sealing member disposed over a portion of the insulating coating.
An implantable medical device (IMD) assembly comprising:
- a header having a setscrew bore;
- a setscrew within the setscrew bore including:
- means for coupling to the header;
- means for electrically insulating the setscrew from the header;
- and
- means for sealably engaging the setscrew within the header.
A sealing setscrew for an implantable medical device comprising:
- a head member having a tool engagement segment configured for application of torque;
- an insulating coating coupled to the head member configured to be placed substantially in compression against the core when torque is applied to the head member;
- a shank member detachedly coupled to a base of the head member, the shank member having an external threaded surface;
- and
- a sealing member disposed over the shank member.
Dependencies are inferred from the claim text.