PRE-MOLDED HEADER WITH UNIVERSAL TIP-TO-TIP FEEDTHRU ADAPTOR
First Claim
1. A pre-molded header assembly for an implantable medical device which includes a casing containing electronic circuitry and having a mounting surface and at least one feedthru wire connected to the electronic circuitry and projecting out of the mounting surface comprising:
- an electrically conductive connector block having a bore with a longitudinal axis for engageably receiving a proximal end portion of a lead carrying at least one electrical connector;
one end of a bore contact wire attached to the connector block;
a feedthru adapter having an upper region with a guiding channel formed thereon, an undersurface with an orientation channel having a predetermined azimuthal direction formed therein, and a transverse channel extending from the upper region to the undersurface thereof, a length of the bore contact wire distant from the one end keyed with the guiding channel passing through the transverse channel including an end portion extending to a tip end and bent into conformance with the orientation channel formed on the undersurface of the feedthru adapter;
a molded header encapsulating the feedthru adapter, the connector block, and the bore contact wire and having an undersurface for mounting engagement on the mounting surface of the casing and an elongated receptacle with a longitudinal axis aligned with the longitudinal axis of the bore of the connector block, the receptacle positioned to receive the proximal end portion of the lead as it engages the connector block, the plastic header mounted to the casing so the undersurface thereof is in engagement with the mounting surface of the casing;
an end portion of the feedthru wire extending to a tip end in a direction generally aligned with the predetermined azimuthal direction of the orientation channel formed on the underside of the feedthru adapter so that the tip end of the feedthru wire and the tip end of the bore contact wire terminate in the same direction and lie in the same plane, the end portions of the feedthru wire and of the bore contact wire being welded together; and
sealant material backfilled into the interface between the header and the casing.
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Accused Products
Abstract
In fabricating a header assembly of an implantable medical device, one end of a bore contact wire attached to a connector block is keyed with one guiding channel at an upper region of a feedthru adapter and through the adapter to its undersurface. An opposite end is bent into conformance with an orientation channel on the adaptor undersurface. A tip end of a feedthru wire connected to electronic circuitry of the medical device and projecting out of a casing mounting surface is bent for alignment with the orientation channel so end portions of the feedthru wire and bore contact wire are in end to end engagement, then welded together. A plastic header is molded to encapsulate the adapter, connector block, and bore contact wire and, when solidified, has an undersurface for engagement on the casing and an elongated receptacle aligned with a connector block bore to receive the lead.
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Citations
10 Claims
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1. A pre-molded header assembly for an implantable medical device which includes a casing containing electronic circuitry and having a mounting surface and at least one feedthru wire connected to the electronic circuitry and projecting out of the mounting surface comprising:
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an electrically conductive connector block having a bore with a longitudinal axis for engageably receiving a proximal end portion of a lead carrying at least one electrical connector; one end of a bore contact wire attached to the connector block; a feedthru adapter having an upper region with a guiding channel formed thereon, an undersurface with an orientation channel having a predetermined azimuthal direction formed therein, and a transverse channel extending from the upper region to the undersurface thereof, a length of the bore contact wire distant from the one end keyed with the guiding channel passing through the transverse channel including an end portion extending to a tip end and bent into conformance with the orientation channel formed on the undersurface of the feedthru adapter; a molded header encapsulating the feedthru adapter, the connector block, and the bore contact wire and having an undersurface for mounting engagement on the mounting surface of the casing and an elongated receptacle with a longitudinal axis aligned with the longitudinal axis of the bore of the connector block, the receptacle positioned to receive the proximal end portion of the lead as it engages the connector block, the plastic header mounted to the casing so the undersurface thereof is in engagement with the mounting surface of the casing; an end portion of the feedthru wire extending to a tip end in a direction generally aligned with the predetermined azimuthal direction of the orientation channel formed on the underside of the feedthru adapter so that the tip end of the feedthru wire and the tip end of the bore contact wire terminate in the same direction and lie in the same plane, the end portions of the feedthru wire and of the bore contact wire being welded together; and sealant material backfilled into the interface between the header and the casing. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pre-molded header assembly for an implantable medical device which includes a casing containing electronic circuitry and having a mounting surface and a plurality of feedthru wires connected to the electronic circuitry and projecting out of the mounting surface comprising:
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a plurality of electrically conductive connector blocks, each having a bore with a longitudinal axis for engageably receiving a proximal end portion of a lead carrying at least one electrical connector; one end of a bore contact wire attached to each connector block; a feedthru adapter having a upper region with a plurality of guiding channels formed thereon, an undersurface with a plurality of orientation channels having a predetermined azimuthal direction formed therein, and a transverse channel associated with each of the guiding and orientation channels and extending from the upper region to the undersurface thereof, a length of each bore contact wire distant from the one end keyed with an associated guiding channel passing through the transverse channel including an end portion extending to a tip end and bent into conformance with an associated orientation channel formed on the undersurface of the feedthru adapter; a molded header encapsulating the feedthru adapter, the connector blocks, and the bore contact wires and having an undersurface for mounting engagement on the mounting surface of the casing and a plurality of elongated receptacles, each with a longitudinal axis aligned with the longitudinal axis of the bore of an associated one of the connector blocks, each receptacle positioned to receive the proximal end portion of the lead as it engages the connector block, the molded header mounted to the casing so the undersurface thereof is in engagement with the mounting surface of the casing; an end portion of each feedthru wire extending to a tip end in a direction generally aligned with the predetermined azimuthal direction of its associated orientation channel formed on the underside of the feedthru adapter so that the tip end of each feedthru wire and the tip end of each associated bore contact wire terminate in the same direction and lie in the same plane, the end portions of the associated feedthru wires and bore contact wires being welded together; and sealant material backfilled into the interface between the header and the casing. - View Dependent Claims (8, 9, 10)
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Specification